1879 Cummins/Onan generator fault/alarm codes with symptom, cause and remedy — compiled from Cummins/Onan service and controller documentation.
| Code | Meaning / symptom | Cause | Remedy |
|---|---|---|---|
| 0 | Check electronic engine controls (fault code lamp) | ||
| 00-0AA | Troubleshoot — Engine Will Not Crank (Genset) | Low battery voltage; Terminal connection-loose or dirty; Battery cable size; Circuit breakers | Check low battery voltage; Check terminal connection-loose or dirty; Check battery cable size; Check circuit breakers |
| 00-0AA | Engine Will Not Crank (Genset) | Check: Low battery voltage; Terminal connections; Battery cable size; then perform checks in step 01 — Check: Remote control; Blown fuse; Start solenoid; Start disconnect relay | |
| 00-0AB | Troubleshoot — Starts But Stops When Switch Released | Oil level; Oil pressure switch; Engine speed | Check oil level; Check oil pressure switch; Check engine speed |
| 00-0AB | Starts But Stops When Switch is Released | Check: Oil level; Choke element; Engine speed; then perform checks in step 01 — Check: All elec | |
| 00-0AC | Engine Overfueling (Genset) | Check: Spark plugs; Fuel pressure at carburetor; Vacuum pull-off; Choke heater; then perform checks in step 01 — Check: Governor adjustments; Carburetor adjustments; then perform checks in step 02 — Check: Ignition coil; Ignition module | |
| 00-0AD | Troubleshoot — High/Low AC Output (Genset) | Broken or loose wires; Voltage regulator; Transformer regulator; Engine speed; Voltage adjustment pot setting; Output lead wiring configuration | Check for broken or loose wires; Check voltage regulator; Check transformer regulator; Check engine speed; Check voltage adjustment pot setting; Check output lead wiring configuration |
| 00-0AD | High/Low AC Output (Genset) | Check: Broken or loose wires; Voltage regulator; Engine speed; then perform checks in step 01 — Check: Main rotor; Main stator; Adjust engine speed | |
| 00-0AG | Troubleshoot — No Output Voltage (Avr) (Genset) | Load breaker closed; Broken or loose wires; AC output to load breakers; Field breaker CB21; Excitor field wiring | Check load breaker closed; Check for broken or loose wires; Check AC output to load breakers; Check field breaker CB21; Check excitor field wiring |
| 00-0AH | Troubleshoot — Unstable Voltage Eng Stable (Genset) | Connections to voltage regulator; Regulator wiring harness; Voltage regulator | Check connections to voltage regulator; Check regulator wiring harness; Check voltage regulator |
| 00-0AN | Troubleshoot — High Exhaust Temp (Marine) | Proper coolant flow out of exhaust; Exhaust temp switch for proper operation; Damaged exhaust temp switch; Plugged sea strainer; Damaged impeller | Check proper coolant flow out of exhaust; Check exhaust temp switch for proper operation; Check for damaged exhaust temp switch; Check for plugged sea strainer; Check for damaged impeller |
| 00-0AZ | Troubleshoot — Unbalanced Generator Output Voltage | Load at generator terminals; Generator lead connections; Generator stator windings | Check load at generator terminals; Check generator lead connections; Check generator stator windings |
| 00-0CM | Troubleshoot − Engine Oil Leak | Oil level; Loose hose or drain fittings; Oil filter seal | Clean contaminated area; Check oil level; Check for loose hose or drain fittings; Check oil filter seal |
| 00-010 | Troubleshoot — Coolant Loss (External) | Coolant level; Cracked or leaking hoses; Loose hose clamps; Radiator or heat exchanger for leaks; Coolant in oil | Check coolant level; Check for cracked or leaking hoses; Check for loose hose clamps; Check radiator or heat exchanger for leaks; Check for coolant in oil |
| 00-014 | Troubleshoot — Coolant Temp Above Normal | Engine coolant level; High engine temp switch; Fault breaker; Coolant level switch | Check engine coolant level; Check high engine temp switch; Check fault breaker; Check coolant level switch |
| 00-022 | Troubleshoot — Eng Cranks But Will Not Start (Genset) | Battery condition; Fuel level in tank; Wire loose at K5; Wire loose at start/stop preheat switch | Check battery condition; Check fuel level in tank; Check for wire loose at K5; Check for wire loose at start/stop preheat switch |
| 00-022 | Engine Cranks But Will Not Start (Genset) | Check: Spark plugs; Ignition module; Fuel supply; then perform checks in step 01 — Check: Fuel supply fittings; Fuel pump; Carburetor choke; Carburetor adjustments | |
| 00-041 | Troubleshoot — Engine Unstable (Hunts) (Genset) | Fuel supply; Fuel Lines for leakage; Loose wire connection | Check fuel supply; Check fuel lines for leakage; Check for loose wire connection |
| 00-041 | Engine Unstable (Hunts) (Genset) | Check: Fuel supply; Fuel Lines for leakage; Loose wire connection; then perform checks in step 01 — Check: Governor linkage for binding; Governor adjustments; Carburetor adjustments | |
| 00-046 | Troubleshoot — Excessive Exhaust Smoke Under Load | Intake air restrictions; Overloaded generator; Valve settings | Check intake air restrictions; Check for overloaded generator; Check valve settings |
| 00-047 | Troubleshoot — Excess White Smoke At Start-Up (Warm) | Glow plugs; Valve settings; Low engine operating temp | Check glow plugs; Check valve settings; Check low engine operating temp |
| 00-048 | Troubleshoot — Excess White Smoke At Start-Up (Cold) | Glow plugs; Engine coolant heater; Valve settings | Check glow plugs; Check engine coolant heater; Check valve settings |
| 1 | Green RUN lamp lights following engine start-up — Indicates all engine systems are normal | Indicates all engine systems are normal | No corrective action required. |
| 1 | Engine Over Temperature — Indicates that, during normal operation, the engine coolant temperature exceeded 115°C (239°F) for 10 seconds. | Engine coolant temperature exceed design limit | Check engine coolant level: if coolant level is low, add coolant as necessary and repair any leaks; Check for blockages: if an air inlet or outlet opening on the bottom of the generator set is blocked, remove objects; if dirt is fouling the radiation fins, clean dirt out; Reduce load: reduce the number of connected appliances, especially air conditioners and battery chargers |
| 1 | Shutdown due to high engine coolant temperature | Engine coolant or inverter heat sink temperature exceeded design limit | Check the engine coolant level and add coolant as necessary (Page 21); Check for and remove any objects blocking the air inlet or outlet openings in the bottom and sides of the genset; Flush the coolant system to remove coolant passage fouling (Page 20). |
| 1 | One blink — shutdown due to high engine coolant temperature | ||
| 1 | HIGH COOLANT TEMP — Shutdown | Indicates that the engine coolant temperature is above normal and has reached the shutdown trip point. | Allow engine to cool down completely before proceeding with the following checks; Check coolant level and replenish if low. Look for coolant leaks and repair if necessary; Check for obstructions to cooling airflow and correct as necessary; Check fan belt and repair or tighten if necessary; Check blower fan and circulation pumps on remote radiator installations; Reset control and restart after locating and correcting problem |
| 1 | The OVERSPEED lamp comes on and the engine shuts down. | A. Reset the ECM by pushing the Run-Stop-Remote switch to Stop and the Reset switch to Reset and restart the set, monitoring engine speed. Spec A & B: Readjust the cutout speed if it is lower than specified. Replace the overspeed switch if it cannot be readjusted (see Section 3). Begin Spec C: If engine speed is correct and the set still shuts down, replace the ignition control module. b. Adjust the governor (see Section 8). c. If the governor cannot be adjusted to prevent shutdown due to overspeed, check for binding in the linkage. Repair and adjust the linkage as necessary. d. If the set still shuts down due to overspeed, re-install the magnetic speed pick-up unit to make sure the clearance with the flywheel gear teeth is correct. Replace the speed-pickup unit if output voltage at cranking speed is less than 1.5 VAC. (Intermittent open on magnetic speed pick-up lead can also cause an overspeed condition.) e. Replace the governor controller if the set still shuts down due to overspeed. | |
| 1 | Engine stops cranking and fault lamp lights, after cranking approximately 75 seconds. | After correcting problem, reset engine monitor relay by placing Run-Stop/Reset-Remote switch to Stop/Reset, then back to the required running position. | |
| 1 | Low or discharged battery | ||
| 1 | Engine does not crank. | Check remote start control wires for continuity between the generator set and the remote start panel. Are control wires sized large enough to avoid excessive voltage drop? Replace control wires with correct wire gauge if necessary. | |
| 1 blink | Shutdown due to high engine coolant temperature | ||
| 1 flash | High engine coolant temperature. | ||
| 1 or 2 digit code | Status light on the generator will repeatedly blink a 1 or 2 digit code after a protective shutdown | ||
| 1, 2, 3, or 4 | First level faults | ||
| 1/202 | HIGH OR PRE-HIGH COOLANT TEMPERATURE (SHUTDOWN/SHUTDOWN) — Calibration-dependent. No action is taken by the Control for code 202. Engine will shut down for code 1 | Fault simulation was enabled with a PC based service tool | With a PC based service tool, verify that the fault simulation is not enabled for the coolant sensor. If you do not have a PC based service tool, remove battery power from the control to disable fault simulation overrides. |
| 2 | PRE-HI ENGINE TEMP lamp lights. Engine continues to operate — Indicates engine has begun to overheat and engine temperature has risen to approximately 205° F (97°C) | Indicates engine has begun to overheat and engine temperature has risen to approximately 205°F (97°C) or coolant level is low | If generator is powering non-critical and critical loads, and cannot be shut down: reduce load if possible by turning off non-critical loads; check air inlets and outlets and remove any obstructions to airflow; open doors or windows in generator area to increase ventilation. If engine can be stopped, follow procedure in Step 3. |
| 2 | Low Oil Pressure — Indicates that the low oil pressure cutoff switch did not open. | Oil Level too low/high, faulty switch, faulty oil pressure relief valve, faulty oil pump | Check engine oil level: if the dipstick indicates oil is low, add oil; if oil is above the full mark on dipstick, drain excess oil |
| 2 | Shutdown due to a loss of engine oil pressure | Oil pressure drops below 9 psi (62 kPa); the oil pressure switch actuates the fault circuit | Remove dipstick and check oil level; if low, add oil to bring level up to the Full mark; inspect engine exterior for leaks and repair as necessary |
| 2 | Two blinks — shutdown due to a loss of engine oil pressure | ||
| 2 | Fault lamp lights immediately after engine starts. | ||
| 2 | Engine flooded | ||
| 2 | Engine cranks but does not start. | Check all terminal connections on K2 crank ignition relay. If OK, replace K2 relay. Does the fuel pump operate during cranking? Check the fuel pump lead wire connections and repair or replace as necessary. | |
| 2 blinks | Low oil pressure fault | ||
| 2 flashes | Low oil pressure fault (Code 2 fault). | ||
| 2/215 | LOW OIL OR PRE-LOW PRESSURE (WARNING/SHUTDOWN) OIL PRESSURE SENSOR TYPE : SENDER — Calibration-dependent. No action is taken by the Control for code 215. Engine will shut down for code 2 | Fault simulation was enabled with a PC based service tool | With a PC based service tool, verify that the fault simulation is not enabled for the oil pressure sensor. If you do not have a PC based service tool, remove battery power from the control to disable fault simulation overrides. |
| 2A | PRE HET/LOP lamp lights. Engine continues to operate — Indicates engine is operating near its maximum cooling system capacity and engine temperature has risen to approximately 220°F (104°C) or coolant level is low | Engine operating near maximum cooling system capacity; engine temperature approximately 220°F (104°C); coolant level low | If generator is powering non-critical and critical loads and cannot be shut down: reduce load if possible by turning off non-critical loads; check air inlets and outlets and remove any obstructions to airflow; if engine can be stopped, follow procedure in step 3 |
| 2B | PRE HET/LOP lamp lights. Engine continues to operate | Indicates engine oil pressure has dropped to 20 psi (137 kPa) | If generator is powering critical loads and cannot be shut down, wait until next shutdown period and then follow step 4 |
| 3 | HI ENG TEMP lamp lights. Engine shuts down — Indicates engine has overheated (engine temperature has risen above 215° F/102° C) or coolant level is low (sets with coolant level sensor) | Engine has overheated (engine temperature has risen above 215° F/102° C); coolant level is low (sets with coolant level sensor) | Allow engine to cool down completely before proceeding: check coolant level and replenish if low, look for possible coolant leakage points and repair if necessary; check for obstructions to cooling airflow and correct as necessary; check for a slipping fan belt, tighten if loose; reset control and restart after locating and correcting problem; contact your distributor if none of the above applies. |
| 3 | Service Check | Any Two-Digit Fault Code | See second-level fault code. |
| 3 | Three blinks — a service fault. Press Stop once to cause the two-digit, second-level shutdown code to blink | Press Stop once to cause the two-digit, second-level shutdown code to blink; pressing Stop again will stop the blinking | |
| 3 | First level fault (not to be interpreted as second-level Fault Code No. 33, which has not been assigned) | ||
| 3 | Shutdown due to some other abnormal condition | ||
| 3 | 100 hour maintenance alert — The genset has accumulated another 100 hours of operation since the last maintenance alert | Perform the required maintenance according to Periodic Maintenance. The alert can only be reset by means of a software command via network or PC. See your authorized Onan dealer. | |
| 3 | Fault lamp lights and engine shuts down after running for a period. | ||
| 3 | Engine starts but stops when start switch is released. | Add oil as required. If oil level is OK, disconnect the low oil pressure switch lead wire and ground it to check if the engine starts and runs. Check low oil pressure switch operation and replace if necessary. | |
| 3 blinks | Service fault — Press Stop once to cause the two-digit, second-level fault code to blink | ||
| 3 flashes | Service fault (Code 3 fault). | ||
| 3 ~ 6V | Only slight output voltage is delivered (3 ~ 6V) | Repair or replace. | |
| 4 | PRE-LO OIL PRES lamp lights. Engine continues to operate — Indicates engine oil pressure has dropped to 20 psi (138 kPa) | Engine oil pressure has dropped to 20 psi (138 kPa) | If generator is powering critical loads and cannot be shut down, wait until next shutdown period and then follow step 5 procedure. If engine can be stopped, follow procedure in step 5. |
| 4 | Over Crank — Indicates that cranking exceeded 30 seconds without engine starting. | Cranking exceeded 30 seconds without engine starting | Check fuel level: if fuel level is low, fill the fuel tank; prime the engine fuel system by positioning the control switch to STOP/PRIME for 30 seconds; Check air filter element: replace the air filter if dirty; Replace engine oil with oil of proper viscosity for the ambient temperature; Check fuel fittings: tighten any fuel fitting if there is a fuel or air leak, reprime the engine fuel system by positioning the control switch to STOP/PRIME for 30 seconds; Replace fuel filter |
| 4 | Overcrank fault (First-level fault code—Cranking exceeded 20 seconds without engine starting) | Cranking time exceeded 20 to 60 seconds, depending on engine temperature | Check and fill the fuel tank, as necessary. (Note: The genset fuel pickup is probably higher than the boat engine pickup.); Prime the engine fuel system by holding the control switch at Stop/Prime for 30 seconds; Open any closed fuel valves; Secure the spark plug lead on the spark plug (Page 20); Replace the spark plug (Page 20); Service the air cleaner (Page 19). |
| 4 | Cranking time exceeded 35 seconds | ||
| 4 | Four blinks — cranking time exceeded 35 seconds | ||
| 4 | LO OIL PRES lamp lights. Engine shuts down | Indicates engine oil pressure has dropped to 14 psi (97 kPa) | Check oil level, lines and filters; if oil system is OK but oil level is low, replenish; reset control and restart; contact an authorized service center if oil pressure is not in the range of 40 to 65 psi (275 to 448 kPa) |
| 4 | First level fault (not to be interpreted as second-level Fault Code No. 44, which has not been assigned) | ||
| 4 | Service check fault (Begin Spec K) | Set has been commanded to crank, and cranks for a total of 35 seconds continuous, without the set starting (speed exceeding −1200 RPM); typical troubleshooting should be related to an out of fuel condition (see FC36) | Check fuel flow and return, actuator operation, wiring, etc. |
| 4 | Low oil level alert — The controller sensed that the low oil level switch was open 1 minute after the genset stopped | Check the engine oil level and add oil as necessary. Repair oil leaks. | |
| 4 | Engine runs, shuts down and cranks for 75-seconds. Cranking cycle stops; fault lamp lights. | ||
| 4 | Engine is running - then stops. | Connect a voltmeter between remote connector plug terminal 6 and ground to check battery voltage. Replace fuse F2 if open. | |
| 4 blinks | Cranking exceeded 30 seconds without the engine starting | ||
| 4-6 | External Exerciser Does Not Repeat an Exercise | ||
| 5 | LO OIL PRES lamp lights. Engine shuts down — Indicates engine oil pressure has dropped to 14 psi (97 kPa) | Engine oil pressure has dropped to 14 psi (97 kPa) | Check oil level, replenish as necessary; check oil lines and filters for leaks, repair as required; reset control and restart; contact your distributor if oil pressure is not in the range of 50 to 70 psi (345 to 483 kPa). |
| 5 | Warning Shutdown due to CO | ||
| 5 | Failure to start fault shutdown — The engine does not crank, or cranks [five 10 second cranks with 30 second rests] but does not start | Engine does not crank | Replace Fuse F2 if blown; Clean and tighten the positive (+) and negative (–) battery cable connections at the battery and at the genset (Page 8); Recharge or replace the battery. Refer to the battery manufacturer's recommendations. |
| 5 | Fault lamp lights, no fault exists. | ||
| 5 | Low battery - no charge rate. | Check condition of battery and wire connection between CR1 diode, K1 start solenoid, R2 resistor, and battery. Replace defective CR1 diode or R2 resistor if necessary. | |
| 5 | Overcrank | ||
| 6 | OVERCRANK lamp lights and engine stops cranking — Or: Engine runs, shuts down, and LO OIL PRES lamp lights — Indicates possible fuel system problem | Possible fuel system problem | Check for empty fuel tank, fuel leaks, or plugged fuel lines and correct as required; check for dirty fuel filter and replace if necessary (see MAINTENANCE section); check for dirty or plugged air filter and replace if necessary (see MAINTENANCE section); refer to step 5; reset the control and restart after correcting the problem; contact your distributor for service if none of the above applies. |
| 6 | Engine runs and then shuts down, OVERSPEED lamp lights | Indicates engine has exceeded normal operating speed | Contact an authorized service center for service |
| 6 | Cranking voltage is too low to reach required cranking speed. | A. While cranking the engine, measure voltage directly across the battery terminals and then immediately across the starter motor terminal and the grounding bolt on the block. Cable, terminal or relay contact resistance is too high if the difference is more than 2 volts. Service as necessary. b. Recharge or replace the battery. Specific gravity for a fully charged battery is approximately 1.260 at 80° F (27° C). c. Replace the engine-driven battery charging alternator if normal battery charging voltage is not between 12 and 14 volts. | |
| 6 | Oil Level High or Low | Engine oil level is too low or too high | Add or drain oil as necessary, check for leaks; Contact an authorized Cummins Onan Service Representative if oil level was too high and contains water and coolant |
| 6 | Control switch off alert — The control switch has been in the OFF position more than 5 seconds, preventing remote control | Push the control switch to AUTO before leaving the site if the genset is to be placed in service. | |
| 6 | Running Time Meter Inoperative. | Replace defective running time meter if necessary. | |
| 6-5 | System Does Not Test With Load | ||
| 7 | Engine runs and then shuts down, OVERSPEED lamp lights — Indicates engine has exceeded normal operating speed | Engine has exceeded normal operating speed | Contact your distributor for service. |
| 7 | Loss of Raw Water Flow — Low raw water pressure in heat exchanger | Low raw water pressure in heat exchanger | Open the sea cock; Check for and clean a blocked sea water strainer. If above the water line, fill the strainer with water to assist priming; Check for disconnected, kinked, or leaking hoses and reconnect, reroute, or replace; Check for a worn raw water impeller and replace as necessary; Check the bottom of the hull for any blockage at the through-hull fitting |
| 7 | SWITCH OFF lamp flashes | Indicates Run/Stop/Remote switch is in the Stop position which will prevent automatic starting if an automatic transfer switch is used | Move the Run/Stop/Remote switch to the Remote position for automatic starting |
| 7 | The engine ignition system is malfunctioning. | Refer to wiring diagrams in Section 7. V6 Engine: a. Check for battery VDC at coil while cranking. (Red wire with green stripe.) b. Spec C − Check Ford engine harness ground lead connection. c. Spec C − Check 10 amp fuse located on Ford engine harness power block. d. Check crank position sensor (315 to 385 ohms). e. Check ignition coil (0.5 to 1.3 ohms). f. Replace ignition module if above items are OK. V10 Engine: a. Check for battery VDC at ignitor coil while cranking. (Red wire with green stripe.) b. Spec D − Check three fuses located on Ford engine harness power block. c. Spec D − Check B+ power connection of Ford engine harness power lead (starter motor stud − B1). d. Check crank position sensor (315 to 385 ohms). e. Check cam position sensor (315 to 385 ohms). f. Check ignition coil primary (0.5 to 1.3 ohms). g. Replace ignition module if above items are OK. | |
| 7 | Loss of utility power alert — The controller sensed a loss of utility power | Verify that the genset is supplying the load. | |
| 7 | Engine runs, shuts down, cranks for 75-seconds, cranking cycle stops, overcrank light ON. | ||
| 7 | Battery Condition Meter Inoperative. | Replace fuse F1. Check wire connections between remote connector plug terminal 5 and the battery condition meter, and between the battery condition meter and ground. Use voltmeter to measure voltage between battery charge meter positive terminal and ground. | |
| 8 | SWITCH OFF lamp flashes — Indicates Run-Stop-Remote switch is in the Stop position which will prevent automatic starting | Run-Stop-Remote switch is in the Stop position | Moving the Run-Stop-Remote switch to the Remote position will stop the lamp flashing and enable automatic starting. |
| 8 | LO FUEL pressure lamp lights | Indicates interruption of natural gas supply | Connect to a propane fuel supply (if not already connected); move the selector switch on the governor mounting bracket to the PROPANE position |
| 8 | LO FUEL lamp lights. Engine continues to run — Indicates diesel fuel supply is running low | Diesel fuel supply is running low | Check fuel supply and replenish as required |
| 8 | OVERLOAD—CODE NO. 8 | Models HDKAH & HDKAV only: Load exceeded 110 percent of genset rating for 2 minutes | Reduce load and restart |
| 8 | Cabinet fault alert — A user-installed cabinet fault sensor switch closed indicating flooding, shear, etc. | Service the fault as necessary. | |
| 8 | Low oil pressure shutdown. | ||
| 9 | LO FUEL lamp lights. Engine continues to run — Indicates diesel fuel supply is running low | Diesel fuel supply is running low | Check fuel supply and replenish as required. |
| 9 | The OVERLOAD lamp lights. Engine shuts down | The line circuit breaker is located in the ATS or generator set output box; if load exceeds generator current rating, the breaker will trip preventing the generator from being overloaded | Locate the source of overload and correct as necessary; manually reset breaker to reconnect the load to the generator |
| 9 | The magnetic speed pick-up is defective or requires adjustment. | Refer to Magnetic Speed Pickup Unit Adjustment in Section 6. | |
| 9 | LO FUEL lamp lights. Engine shuts down and LO OIL PRES lamp lights — Indicates engine has run out of fuel | Engine has run out of fuel | Check fuel level and replenish as required |
| 9 | Low gas supply pressure alert — The user-installed pressure switch closed indicating low gas supply pressure | Open all shutoff valves in the fuel supply line; Fill the LPG container. On cold days the LPG container may have to be kept at least half full to provide the rate of vaporization required to keep up with genset fuel demand. LPG with more than 2.5 percent butane will not vaporize below 32° F (0° C). Use HD-5 grade LPG. | |
| 9 | High engine temperature shutdown. | ||
| 10 | LO FUEL lamp lights. Engine shuts down and LO OIL PRES lamp lights — Indicates engine has run out of fuel | Engine has run out of fuel | Check fuel level and replenish as required. |
| 10 | Incorrect main fuel valve adjustment. | Refer to Gaseous Fuel Adjustment (Type A or B) in Section 6. | |
| 10 | The OVERLOAD lamp lights. Engine shuts down | The line circuit breaker is located in the output box or ATS; load exceeds generator current rating, the breaker will trip preventing the generator from being overloaded and the genset will shut down | Locate the source of overload and correct as necessary; manually reset breaker to reconnect the load to the generator |
| 10 | Overspeed shutdown. | ||
| 010 | External Coolant Loss | -Visually check for: -Coolant level is OK -Cracked or leaking hoses -Loose clamps -Leaks or defects in radiator -Coolant in oil | |
| 11 | LO ENG TEMP lamp lights. Set is in standby mode but is not operating — Indicates engine coolant heater is not operating or is not circulating coolant (lamp lights when engine coolant temperature is 70° F (21° C) or lower; since the lamp goes out after the engine warms up, there should be no cause for alarm if it remains lighted during initial generator set operation) | Engine coolant heater is not operating or is not circulating coolant | Check for the following conditions: coolant heater not connected to power supply, check for blown fuse or disconnected heater cord and correct as required; check for low coolant level and replenish if required, look for possible coolant leakage points and repair as required; contact your distributor if none of the above applies. |
| 11 | Fault lamp lights but no fault exists. Engine gauges show oil pressure, engine temperature, and frequency (speed) are within normal limits | The monitor board or a sensor may be at fault | Contact an authorized service center for service |
| 11 | Incorrect secondary regulator adjustment. | Refer to Initial Secondary Regulator Adjustment in Section 6. | |
| 11 | The O/U VOLTAGE lamp lights | Contact an authorized service center for service | |
| 11 | OVERCURRENT FAULT—CODE NO. 11 | AC output short | Turn off the genset line circuit breaker. If the genset no longer shuts down, the genset is probably okay—check for and repair a short circuit in the vehicle appliances, wiring or shorted battery charger transformer; Check whether the vehicle engine and genset share the same starting battery. If so, and this fault occurs when cranking the vehicle engine, low battery voltage may be causing this shutdown. Increase battery capacity or install a separate battery and battery charging system for the genset |
| 11 | Second-level Fault Code No. 11 (not to be confused with first level fault No. 1) | ||
| 11 | Overspeed light on, no shutdown. | ||
| 12 | The FAULT 1 or FAULT 2 fault lamp lights. Engine shuts down immediately, engine runs for several seconds and then shuts down, or engine continues to run — The standard undesignated fault functions are programmed to shut down the set when a fault is sensed. Fault 1 is time delayed while Fault 2 is immediate. The nature of the fault is an optional selection that is determined when the set installation is designed. The undesignated fault functions may also be programmed for non-shutdown or non-time delay | The standard undesignated fault functions are programmed to shut down the set when a fault is sensed. Fault 1 is time delayed while Fault 2 is immediate. The nature of the fault is an optional selection that is determined when the set installation is designed. The undesignated fault functions may also be programmed for non-shutdown or non-time delay. | Check voltage output |
| 12 | Over Voltage — Indicates the control is unable to maintain rated voltage. | The control is unable to maintain rated voltage | Contact local dealer or distributor |
| 12 | Overvoltage fault (Controller unable to maintain rated voltage) | Generator set loads, wire connections, windings | See an authorized Onan dealer. |
| 12 | High AC Voltage — After voltage regulation was enabled output voltage jumped to more than 125% of rated for 75 milliseconds or to more than 115% of rated for 3 seconds | After voltage regulation was enabled output voltage jumped to more than 125% of rated for 75 milliseconds or to more than 115% of rated for 3 seconds | Does not apply when generator set has PMG excitation; Check for a tripped generator set circuit breaker, reset if necessary, and run with fewer loads. (A breaker tripping under load can cause generator set voltage to overshoot.); Check all fuel fittings and filters for fuel and air leaks and tighten as necessary. (Air bubbles can disrupt generator set frequency and voltage.); Prime the engine fuel system for at least 30 seconds; Push the generator set line circuit breaker OFF, start the generator set. If output voltage is normal, the problem is in the circuits external to the generator set. If there is no voltage, see an authorized Cummins Onan service representative |
| 12 | Engine will not crank | Indicates possible fault with control or starting system; fault lamp on | Correct fault and reset control |
| 12 | Overvoltage fault (the controller is not able to regulate to rated voltage) | Brushes and slip rings need service | See an authorized Onan dealer. |
| 12 | Fault lamp lights but no fault exists. Engine gauges show oil pressure, engine temperature, and frequency (speed) are within normal limits | The monitor board or a sensor may be at fault | Contact an authorized service center |
| 12 | INVERTER OVERVOLTAGE FAULT—CODE NO. 12 | Controller not able to regulate to rated voltage | Check whether the vehicle engine and genset share the same starting battery. If so, and this fault occurs when cranking the vehicle engine, low battery voltage may be causing this shutdown. Increase battery capacity or install a separate battery and battery charging system for the genset |
| 12 | High engine temperature light ON. No shutdown. | ||
| 13 | Fault lamp lights but no fault exists. Engine gauges show oil pressure, engine temperature, and frequency (speed) are within normal limits | The monitor board or a sensor may be at fault | Contact your distributor for service. |
| 13 | Under Voltage — Indicates the control is unable to maintain rated voltage. | Generator set loads, wire connections, windings | Reduce load: reduce the number of connected appliances, especially air conditioners and battery chargers |
| 13 | Low AC Voltage — After voltage regulation was enabled output voltage fell to less than 90% of rated for 5 seconds | Field breaker is tripped | Does not apply when generator set has PMG excitation; Push the generator set line circuit breaker to off and disconnect the PTO, if so equipped. If the generator set now runs and voltage and frequency are normal, reduce the number of electrical and mechanical (PTO) loads. If there is no voltage, contact your Cummins Onan service representative; Check the fuel level and fill as necessary; Remove combustion air or exhaust system blockages; Prime the engine fuel system for at least 30 seconds; Check all fuel fittings and filters for fuel and air leaks and tighten as necessary. (Air bubbles can disrupt generator set frequency and voltage).; Replace fuel filters and reprime |
| 13 | AC voltage S1–S2 less than 108 VAC for 5 continuous seconds | Genset loads, Inverter/Charger, wire connections, generator drive system, windings, AC sense transformer, windings | Verify that Last Fault is FC 13: Yes, continue diagnosis; No, troubleshoot actual last fault; Measure AC voltage; Measure AC voltage in and out of sense transformer (if so equipped): repair wire connection, replace sense transformer as necessary; Measure AC frequency while changing engine rpm to determine if frequency response matches engine rpm response: repair damaged generator drive system as necessary; Cycle loads to determine if a particular load will cause fault: diagnose faulty load as necessary; Determine battery charge rate (typical default is 80 percent): if adjustable reduce to 30 percent; Verify balanced loads in 120/240 VAC applications: balance loads within 10 percent line–to–line as required; HGJAD only – Run genset in Engine Run Only mode and externally excite field F1–F2 with 12 VDC or 24 VDC and measure main and quadrature winding AC output; Non EFI – If the genset will not stay running measure genset frequency, quadrature winding and main winding voltages using Break-Out Tool 420–0603 and Instruction Sheet R1098; Remove connector P1 from control and re-install and try to start genset: inspect, repair or replace P1 connector pins as necessary; Measure field, quadrature and main winding resistance: clean slip rings, replace brushes, repair harness and replace rotor or stator as necessary; Measure field, quadrature and main winding resistance to ground: clean slip rings, replace brushes, repair harness and replace rotor or stator as necessary; Measure field, quadrature and main winding resistance to each other: clean slip rings, replace brushes, repair harness and replace rotor or stator as necessary; Check brush alignment per PSB-682a; Dealers contact Distributor for technical support, Distributors contact factory for technical support |
| 13 | Generator runs less than 2 hours and then shuts down and will not restart; fuel flow may be restricted, causing the generator to exhibit symptoms of running out of fuel and shutting down; when the set is running or priming a loud clicking sound can be heard | Material specification and assembly issue that resulted in the pump's plunger sticking; issue can be intermittent | If the fuel pump is in the affected date range, replace the pump; all pumps with a date code of 070705 and later (DDMMYY) and/or white dot are known to be good; do not use spare parts with a date code 010405 – 060705 |
| 13 | Engine starts from generator control panel but will not start automatically or from a remote panel. (Note: The Run/Stop/Remote switch must be in the Remote position for automatic or remote starting) | Contact an authorized service center for service | |
| 13 | INVERTER UNDERVOLTAGE FAULT—CODE NO. 13 | Controller not able to regulate to rated voltage | Check whether the vehicle engine and genset share the same starting battery. If so, and this fault occurs when cranking the vehicle engine, low battery voltage may be causing this shutdown. Increase battery capacity or install a separate battery and battery charging system for the genset |
| 13 | Generator set will shut down and may display Fault Code 13 if the Voltage Reference fuse opens | Voltage Reference fuse opens | Replace the Voltage Reference (10A) fuse |
| 13 | Low oil pressure light ON. No shutdown. | ||
| 14 | Engine starts from generator control panel but will not start automatically or from a remote panel (Note: The Run-Stop-Remote switch must be in the Remote position for automatic or remote starting) | Remote circuit breaker is tripped | Reset breaker and restart; contact your distributor if breaker trips after resetting. |
| 14 | Over Frequency — Indicates the engine governor is unable to maintain rated frequency. | The engine governor is unable to maintain rated frequency | Contact local dealer or distributor |
| 14 | Overfrequency fault (Engine governor unable to maintain rated frequency) | Generator set loads, engine governor function, fuel supply, air fuel mixture, exhaust system, choke, demand regulator, carburetor, generator windings, wire connections | See an authorized Onan dealer. |
| 14 | High AC Frequency — After the starter was engaged frequency jumped to more than 70 Hz for 40 milliseconds or to more than 2% over nominal for 6 seconds | After the starter was engaged frequency jumped to more than 70 Hz for 40 milliseconds or to more than 2% over nominal for 6 seconds | Check for a tripped generator set circuit breaker, reset if necessary, and run with fewer loads. (A breaker tripping under load can cause generator set frequency to overshoot.); Check all fuel fittings and filters for fuel and air leaks and tighten as necessary. (Air bubbles can disrupt frequency.) |
| 14 | Green RUN lamp does not light following engine startup | Indicates possible Start/Disconnect relay failure | Test light with LAMP TEST position on switch; contact an authorized service center |
| 14 | Overfrequency fault (the controller is not able to regulate to rated frequency) | Governor linkage binding | Prime the engine fuel system by holding the control switch at Stop for one minute. (There may be air in the fuel system.); Check for a tripped genset circuit breaker, reset it if necessary, and run with fewer connected loads. |
| 14 | Remote circuit breaker is tripped. | Reset breaker and restart. Contact an authorized service center if breaker trips after resetting. | |
| 14 | Engine will not crank — Indicates possible fault with control or starting system | Fault lamp on; poor battery cable connections; discharged or defective battery; emergency stop button is pushed in | Correct fault and reset control; clean the battery cable terminals and tighten all connections; recharge or replace the battery; to reset, pull switch out and move Run/Stop/Remote switch to Stop position, then push test switch to Reset/Lamp position; contact an authorized service center if none of the above |
| 14 | INVERTER OVERFREQUENCY FAULT—CODE NO. 14 | Controller not able to regulate to rated frequency | Reduce the number of connected appliances, especially when air conditioners and battery chargers are running |
| 14 | The BASIN (optional) fault lamp lights. Engine continues to run or is in standby mode. (Engine can be programmed to shut down.) | Indicates fuel is leaking from inner tank to outer basin or the sensor may be defective. | Contact an authorized service center for service. |
| 15 | Engine will not crank — Indicates possible fault with control or starting system | Fault lamp on; poor battery cable connections; discharged or defective battery | Correct fault and reset control; clean the battery cable terminals and tighten all connections; recharge or replace the battery; contact your distributor for assistance if none of the above applies. |
| 15 | Under Frequency — Indicates the engine governor is unable to maintain rated frequency. | Generator set loads, engine governor function, fuel supply, air fuel mixture, exhaust system, choke, demand regulator, carburetor, generator windings, ignition, wire connections | Reduce load: reduce the number of connected appliances, especially air conditioners and battery chargers |
| 15 | Low AC Frequency — During normal operation Frequency fell to less than 90% of nominal for more than 8 seconds | During normal operation Frequency fell to less than 90% of nominal for more than 8 seconds | Push the generator set line circuit breaker off and disconnect the PTO clutch, if so equipped. If the generator set now runs, reduce the number of electrical and mechanical (PTO) loads, especially those with high motor starting loads, such as air conditioners; Check the fuel level and fill as necessary |
| 15 | Generator runs less than 2 hours and then shuts down and will not restart; fuel flow may be restricted, causing the generator to exhibit symptoms of running out of fuel and shutting down; when the set is running or priming a loud clicking sound can be heard | Material specification and assembly issue that resulted in the pump's plunger sticking; issue can be intermittent | If the fuel pump is in the affected date range, replace the pump; all pumps with a date code of 070705 and later (DDMMYY) and/or white dot are known to be good; do not use spare parts with a date code 010405 – 060705 |
| 15 | No AC output voltage | Field breaker is tripped | Reset breaker; contact an authorized service center if voltage buildup causes breaker to trip |
| 15 | INVERTER UNDERFREQUENCY FAULT—CODE NO. 15 | Controller not able to regulate to rated frequency | Reduce the number of connected appliances, especially when air conditioners and battery chargers are running; Have air conditioners and other appliances checked for proper operation. (A locked compressor rotor can cause very low power factor.) |
| 15 | Engine starts from generator control panel but will not start automatically or from a remote panel. (Note: The Run/Stop/Remote switch must be in the Remote position for automatic or remote starting). | Remote circuit breaker is tripped. | Reset breaker and restart. Contact an authorized service center if breaker trips after resetting. |
| 16 | No AC output voltage (Note: If unit is equipped with an excitation breaker located on back side of output box, near regulator box, confirm it is at ON position) | Voltage regulator is inoperative | Refer to Initial Start and Checks, and Adjustments sections of your Installation Manual for voltage check and adjustment procedures; contact your distributor if voltage build-up is still a problem. |
| 16 | Engine will not crank. | Indicates possible fault with control or starting system. | Indicates possible fault with control or starting system. Check for the following conditions: a. Fault lamp on. Correct fault and reset control. b. Poor battery cable connections. Clean the battery cable terminals and tighten all connections. c. Discharged or defective battery. Recharge or replace the battery. d. Emergency stop button (if equipped) pushed in. To reset, pull switch out and move Run/Stop/Remote switch to Stop position. Then push test switch to Reset/Lamp position. e. Contact an authorized service center if none of the above. |
| 16 | Green RUN lamp does not light following engine startup — Indicates possible Start/Disconnect relay failure | Possible Start/Disconnect relay failure | Contact an authorized service center for assistance |
| 17 | Green RUN lamp does not light following engine start-up — Indicates possible Start/Disconnect relay failure | Possible Start/Disconnect relay failure | Contact your distributor for assistance. |
| 17 | Fuel pump fault | Wire connections, harness leads, faulty fuel pump | Verify that Last Fault is FC 17: Yes, continue diagnosis; No, troubleshoot actual last fault; Verify fuel pump operation in prime mode, if pump operates fault condition has been cleared verify harness connections, no further troubleshooting; HGJAA, D Check continuity across fuse F1; Disconnect genset control P1 connector, verify P1 pins are fully inserted and inspect pin condition per PSB–676: insert, repair or replace pins as necessary; Reconnect P1 connector, prime genset to verify pump operation and test run genset for fault occurrence; Measure continuity between E2 fuel pump leads; replace terminals or fuel pump as necessary; Measure voltage between fuel pump E2 + and ground while priming; replace terminals, harness leads or control as necessary |
| 17 | No AC output voltage. | Field breaker is tripped. | Field breaker is tripped. Reset breaker. Contact an authorized service center if voltage buildup causes breaker to trip. |
| 17 | Over-prime — Prime mode exceed 5 minutes | Prime mode exceed 5 minutes | Check for and remove any object that may be holding either control switch (remote or local) in the prime position; Disconnect remote connector P4 and check for continuity between Pins 4 and 2 when the remote switch is not held at STOP. If there is continuity, repair or reconnect the remote wiring as necessary; Disconnect control switch S4 and check for continuity between terminals 1 and 2 when the switch is not held at STOP (Page 4-4). If there is continuity, replace switch S4 |
| 17 | Overprime | Battery voltage; Fuel supply; Start/stop switch (local and remote); Shorted wiring | Check: Battery voltage; Fuel supply; Start/stop switch (local and remote); Shorted wiring |
| 17 | Engine accessory fault shutdown — The controller sensed an accessory overload | See the Service Manual. | |
| 18 | RUN or fault lamp(s) does not light when Lamp Test switch is engaged. | Contact an authorized service center for assistance. | |
| 18 | Glow plug fault | Remove the top housing panel (p. 6-3) and, if loose, reconnect engine harness spade connector HR-1 (p. A-1, A-4) to the glow plug bus bar at the front of the engine (short to ground will cause shutdown); Disconnect engine harness connector HR-1 at the glow plug bus bar and A1-J8 at the controller assembly. Check for continuity between either connector and ground (ground short). Replace the engine harness if it is shorted to ground; Replace the controller assembly (p. 10-1) | |
| 18-57 | Turbocharger Boost Pressure Low.... | ||
| 19 | Governor Actuator — Indicates the control sensed an open or shorted circuit. | Wire connections, governor actuator | Contact local dealer or distributor |
| 19 | Green RUN lamp does not light following engine startup. | Indicates possible Start/Disconnect relay failure. | Indicates possible Start/Disconnect relay failure. Contact an authorized service center for assistance. |
| 19 | Actuator shorted or open — At startup the Controller sensed an open or shorted governor actuator/harness | See an authorized Onan dealer. | |
| 21 | Starter Solenoid Circuit - controller senses a short circuit | Connections at starter motor; Shorts and/or grounds at solenoid | Check connections at starter motor; Check shorts and/or grounds at solenoid |
| 21 | Starter solenoid circuit protection fault — The controller sensed a starter control circuit short | See an authorized Onan dealer. | |
| 22 | Governor Actuator Overload — Indicates the duration of operation is near full-duty cycle beyond design limit. | Generator set loads, wire connections, fuel supply, air fuel mixture, exhaust system, governor actuator, ignition system | Reduce load: reduce the number of connected appliances, especially air conditioners and battery chargers; Check air filter element: replace the air filter if dirty; Check exhaust system: if exhaust system is blocked, remove blockage |
| 22 | Second-level Fault Code No. 22 (not to be confused with first level fault No. 2) | ||
| 23 | Engine Speed Sensor (ESS) signal on pins 21 and 22 of the engine harness electronic control module (ECM) connector indicates engine speed greater than alarm (shutdown) threshold — Fuel shutoff valves are de-energized (valves closed); Common Alarm output is energized; Overspeed relay driver is energized | Check connections in wiring harness; switch continunity | |
| 23 | Faulty Oil Pressure Sender — Controller sensed grounded sender | Controller sensed grounded sender | See an authorized Onan service representative |
| 23 | Oil pressure switch fault | Wire connections, faulty switch | Check connections in wiring harness; Check switch continunity |
| 23 | Engine Speed Sensor [ESS) Fuel shuto? vahes are signa! on pra 21 and 22 olthe = «— de-energized valves angne hamess electronic closedi, contrat module (ECM) connector Conytion Alarm output is invdcates ongma speed greater = anergzad than alam (shuldown) ihrashokd ~=Overspeed relay dry or is energ | ||
| 24 | Faulty Temperature Sender — the control sensed open sender | Controller sensed open sender | Contact local dealer or distributor |
| 24 | Temperature Sending Unit fault | Connections in wiring harness; Switch continunity | Check connections in wiring harness; Check switch continunity |
| 24 | Coolant temperature sender fault (the controller sensed a defective sender) | See an authorized Onan dealer. Also see BYPASSABLE FAULTS (Page 20). | |
| 24 | Faulty engine temp sender: No. 24 — Controller sensed open or grounded sender | Tighten the ring terminal on sender E2 if loose; Measure resistance across sender E2 and replace it if open; Disconnect connector P1 (black) from genset controller and check continuity between Pin 9 and ring terminal E2-1, repair the wiring as necessary if open | |
| 25 | ENGINE ABOVE SPEED TARGET FAULT—CODE NO. 25 | Governor unable to regulate to target speed | Check fuel rack return spring; binding of the governor; high idle speed |
| 26 | ENGINE BELOW SPEED TARGET FAULT—CODE NO. 26 | Governor unable to regulate to target speed | Check loads; air in fuel system; air intake restriction; exhaust restriction; binding in the governor; high idle speed; injectors; injection timing; compression |
| 27 | Voltage Sense — Indicates the control is unable to sense output voltage. | Generator set loads, generator windings, ignition, wire connections | Contact local dealer or distributor |
| 27 | Voltage on any phase has dropped below a preset value. | ||
| 27 | Low AC voltage shutdown | Voltage on any phase has dropped below a preset value. Adjustable over a range of 50-95% of reference voltage, time delay 2-20 seconds. Default value is 85% for 10 seconds. Function tracks reference voltage. Control does not nuisance trip when voltage varies due to the control directing voltage to drop, such as during a V/Hz roll-off during synchronizing. | |
| 27 | AC Output Sense Fault | Wiring harness connections | Check wiring harness connections |
| 27 | Quadrature sense fault (the controller was unable to sense the required parameter) | See an authorized Onan dealer. | |
| 27 | VAC sense lost — The Controller lost VAC sensing during normal voltage regulation when the field was functioning normally and frequency was at least 40 Hz | Controller unable to sense PMA frequency | See an authorized Onan dealer. |
| 27 | EXCITATION FAULT — Shutdown | Indicates that a loss of voltage or frequency sensing from the generator has occurred. | Check field wiring (X1 and X2) for shorts or opens. (Refer to Section 7.) |
| 27 | Generator set will shut down and may display Fault Code 27 if the Voltage Reference fuse opens | Voltage Reference fuse opens | Replace the Voltage Reference (10A) fuse |
| 28 | Quadrature Sense Fault | Wiring harness connections; Stator resistance for opens/shorts/grounds | Check wiring harness connections; Check stator resistance for opens/shorts/grounds |
| 28 | AC output sense fault (the controller was unable to sense the required parameter) | See an authorized Onan dealer. | |
| 28 | DC SENSE LOST FAULT—CODE NO. 28 | Controller unable to sense DC bus voltage | Open the circuit breaker. If the fault does not persist, check for and disconnect excessive loads from the genset before starting |
| 29 | High Battery Voltage — Indicates that voltage across the battery system is greater than 19 Volts. | Incorrect battery configuration, wire damage, faulty charger, control | Check battery bank connections and reconnect if necessary so that the 12 Volt batteries serving the generator set are connected in parallel (12 Volt) rather than in series (24 Volt); Select a lower battery boost charge rate |
| 29 | Fuel or oil leaking from exhaust manifold | ||
| 31 | Overspeed fault (HGJAD, E, F models only) | Engine governor function, fuel supply, air fuel mixture, exhaust system, choke, demand regulator, carburetor, generator drive system, ignition, wire connections | Verify that Last Fault is FC 31: Yes, continue diagnosis; No, troubleshoot actual last fault; Measure genset frequency and droop while running; Measure AC frequency while changing engine rpm to determine if frequency response matches engine rpm response: repair damaged generator drive system as necessary; Disconnect genset control P1 connector, verify P1 pins are fully inserted and inspect pin condition per PSB–676: insert, repair or replace pins as necessary; Inspect spark plug lead, kill lead terminal at magneto and measure magneto air gap: replace terminals, set gap or replace magnetos as necessary; Measure temperature of air intake and temperature rise across genset; remove blockage or prevent air recirculation; Dealers contact Distributor for technical support, Distributors contact factory for technical support |
| 31 | Over Speed — Indicates that engine speed is greater than 3400 RPM | Contact local dealer or distributor | |
| 31 | Engine will not shut off | ||
| 32 | Low Cranking Speed — Indicates that cranking speed is less than 180 RPM for more than 2 seconds. | Starter, engine components, air intake system, exhaust system, generator windings, wire connections, battery, battery connections, oil viscosity | Check battery: clean and tighten the positive (+) and negative (–) battery cable connections at the battery and at the generator set; recharge or replace the battery; Replace engine oil with oil of proper viscosity for the ambient temperature |
| 32 | Reverse power shutdown - Adjustment range: 5-20% of standby kW rating, delay 1-15 se | ||
| 32 | Starting Fault — The generator set Controller could not detect cranking speed [quadrature zero crossings] for 3 seconds | The generator set controller could not detect cranking speed for 3 seconds | De-energize the PTO clutch, if so equipped; have the propulsion engines running while trying to start the generator set. Their charging alternators may be able to maintain a high enough battery terminal voltage to start the generator set; service as necessary by cleaning and tightening battery connections, recharging or replacing the battery or replacing damaged battery cables (p. 4-2); change the engine oil to oil of the proper viscosity for the ambient temperature. High oil viscosity can slow down cranking speed |
| 32 | High Coolant Temperature | ||
| 32A | Emergency Stop | Reset the emergency stop switch. | |
| 33 | HIGH ENGINE COOLANT TEMPERATURE FAULT—CODE NO. 33 | Fault Code 3 interpreted as a non-assigned Fault Code 33 | Verify that Last Fault is FC 3 Yes, continue diagnosis; No, troubleshoot actual last fault; While LED is flashing three times press stop once (1 second duration): trouble shoot Two-Digit Fault Code |
| 34 | HIGH INVERTER TEMPERATURE FAULT—CODE NO. 34 | Inverter heat sink temperature exceeded design limit | Check air inlet for blockage; clean inverter heat sink; damaged cooling fan; reduce coach loads; cool heat sink with compressed air |
| 34 | High engine temperature alert — The controller senses that engine temperature is close to the design limit | Check for and remove any objects blocking the air inlet or outlet openings; Reduce the electrical load. (Note that high altitude and high ambient temperature decrease engine cooling capacity.); Clean the engine cooling fins and blower blades. See Periodic Maintenance. | |
| 35 | Control Card Failure — Indicates that a microprocessor EEPROM error occurred during self test. | Faulty program | Contact local dealer or distributor |
| 35 | Control card fault (there was a memory error in the microprocessor during self-test) | See an authorized Onan dealer. | |
| 35 | EE checksum fault — During startup the genset Controller detected an EE memory error | Verify fault | See an authorized Onan dealer. |
| 35 | Low power | ||
| 36 | Engine Stopped — Indicates that the engine stopped without receiving a command from the control. | The engine stopped without receiving a command from the control | Check fuel level: if fuel level is low, fill the fuel tank; prime the engine fuel system by positioning the control switch to STOP/PRIME for 30 seconds; Check air filter element: replace the air filter if dirty; Check for mechanical damage |
| 36 | Generator Set Stopped Without Fault Condition | Fuel supply, air fuel mixture, exhaust system, choke demand regulator, carburetor, generator windings, ignition, wire connections | Check the fuel source; Open any closed fuel valves; Secure spark plug leads to spark plugs; Check and service air filter as necessary; Replace spark plugs; Check for mechanical damage. |
| 36 | Unknown Shutdown — The generator set Controller declared this fault because engine speed fell below 1000 RPM for 0.5 seconds, though not by generator set or engine control action | The generator set controller declared this fault because engine speed fell below 1000 RPM for 0.5 seconds, though not by generator set or engine control action | Check for mechanical damage and service as necessary; push the generator set line circuit breaker OFF and disconnect the PTO, if so equipped. If the generator set now runs, reduce the number of electrical and mechanical (PTO) loads; check fuel level and refill as necessary. (Note: The generator set fuel pickups are probably higher than the propulsion engine fuel pickups.); prime the engine fuel system for at least 30 seconds (p. 3-3); remove combustion air or exhaust system blockages; check all fuel fittings for fuel and air leaks and tighten as necessary; replace fuel filters (p. 4-6) |
| 36 | Genset stopped without fault condition | Auto Gen Start (AGS), fuel supply, air fuel mixture, exhaust system, loads, Inverter/Charger, choke, demand regulator, carburetor, generator drive system, generator windings, ignition, wire connections | Verify that Last Fault is FC 36: Yes, continue diagnosis; No, troubleshoot actual last fault; Verify whether AGS stopped genset: Yes, disable AGS or explain AGS function to customer (see PSB-666); No, continue diagnosis; Verify engine rotation manually: repair engine damage as necessary; Disconnect genset control P1 connector, verify P1 pins are fully inserted and inspect pin condition per PSB–676: insert, repair or replace pins as necessary; Reconnect P1 connector and test run genset for fault occurrence: repair or replace pins in connector as necessary; Check air filter cleanliness; replace air filter as necessary; Check for blocked or damaged exhaust system: repair or replace exhaust components as necessary; Measure AC current while running genset with vehicle loads: identify faulty or short cycling loads; Determine battery charge rate (typical default is 80 percent): if adjustable reduce to 30 percent; Measure genset load capability with shop load bank; HGJAD only – Run genset in Engine Run Only and externally excite field F1–F2 with 12 VDC or 24 VDC and measure main and quadrature winding AC output; Non EFI – Verify genset operation and outputs with Break-Out Tool 420–0603 and Instruction Sheet R1098; Measure AC frequency while changing engine rpm to determine if frequency response matches engine rpm response: repair damaged generator drive system as necessary; All Gasoline Models: Vapor lock may occur in high ambient temperatures: operate in ambients at less than 120°F; verify proper installation to prevent air recirculation; correct as necessary; Inspect throttle body for binding or damage: replace as necessary. Measure fuel pump pressure/flow: replace fuel filter, pressure regulator or fuel pump as necessary; Propane Models: When ambient temperatures are less than 40°F vapor-withdrawal Propane tanks should be at least half full to provide proper vaporization rate. Propane having more than 2.5 percent Butane will not vaporize in ambients at less than 32°F; use HD–5 grade Propane. Measure steady DC voltage at fuel solenoid while genset is running; repair wiring as necessary. Verify clear vent hose. Run genset on shop fuel supply; verify tank level and fuel line condition in vehicle. Check genset fuel lines for damage: replace fuel line as required. Measure regulator lock off pressure; Check governor, actuator, linkage and spring for debris, damage and looseness: readjust and repair as necessary; HGJAD only – Run genset in Engine Run Only and externally excite field F1–F2 with 12 VDC or 24 VDC and measure main and quadrature winding AC output; Non EFI – If the genset will not stay running measure genset frequency, quadrature winding and main winding voltages using Break-Out Tool 420–0603 and Instruction Sheet R1098; Remove connector P1 from control and re-install and try to start genset: inspect, repair or replace P1 connector pins as necessary; Measure field, quadrature and main winding resistance: clean slip rings, replace brushes, repair harness and replace rotor or stator as necessary; Measure field, quadrature and main winding resistance to ground: clean slip rings, replace brushes, repair harness and replace rotor or stator as necessary; Measure field, quadrature and main winding resistance to each other: clean slip rings, replace brushes, repair harness and replace rotor or stator as necessary; Check brush alignment per PSB-682a; Measure temperature of air intake and temperature rise across genset; remove blockage or prevent air recirculation; Dealers contact Distributor for technical support, Distributors contact factory for technical support |
| 36 | Generator runs less than 2 hours and then shuts down and will not restart; fuel flow may be restricted, causing the generator to exhibit symptoms of running out of fuel and shutting down; when the set is running or priming a loud clicking sound can be heard | Material specification and assembly issue that resulted in the pump's plunger sticking; issue can be intermittent | If the fuel pump is in the affected date range, replace the pump; all pumps with a date code of 070705 and later (DDMMYY) and/or white dot are known to be good; do not use spare parts with a date code 010405 – 060705 |
| 36 | Fault Code No. 36 (example: blink-blink-blink—pause—blink-blink-blink-blink-blink-blink—long pause—repeat) | ||
| 36 | Mechanical fault — The Controller declared this fault because engine speed fell below 1000 RPM for 0.5 seconds, though not by Controller action | Check fuel level and refill as necessary. (Note: The genset fuel pickup is probably higher than the vehicle engine fuel pickup.); Prime the engine fuel system for one minute (p. 2-4); Check all fuel fittings for fuel and air leaks and tighten as necessary. Reprime; Check the engine air filter and remove any blockage (p. 3-4); Replace the fuel filter (p. 3-6). | |
| 36 | Generator shut down but was not "told" to shut down by the control | Usually this means the generator is not getting fuel | Check fuel level, filter and hoses |
| 36 | Troubleshoot − Fault Code 36 | Fuel level in coach tanks; Air filter blockage; Mechanical damage; Auxiliary fuel pump; P1 and P2 connectors and wiring | Prime genset fuel system; Conduct fuel flow test |
| 37 | Invalid genset configuration fault (Genset configuration is preprogrammed at the factory) | Control | See an authorized Onan dealer. |
| 37 | Invalid Generator Set Configuration — The generator set controller is not configured properly for the generator set | Generator set configuration, control | See an authorized Cummins Onan service representative |
| 37 | Invalid genset configuration (there was a memory error in the microprocessor during self-test) | See an authorized Onan dealer. | |
| 37 | Troubleshoot − Fault Code 37 | Verify problem and report to factory | |
| 38 | Over Current (Field Overload) — Indicates low power factor loads. | Low power factor loads | Reduce load: reduce the number of connected appliances, especially air conditioners and battery chargers; Check appliances for proper operation: have air conditioners and other appliances checked for proper operation |
| 38 | Overcurrent fault (Low power factor loads) | Too many loads connected | Reduce the number of appliances running at the same time, especially those with high motor starting loads such as air conditioners; Have air conditioners and other appliances checked for proper operation. (A locked compressor rotor can cause very low power factor.) |
| 38 | Field Overload (Overvoltage) | Low power factor loads | Reduce the number of appliances running at the same time, especially those with high motor starting loads such as air conditioners; Have air conditioners and other appliances checked for proper operation. (A locked compressor rotor can cause very low power factor.) |
| 38 | Field overload (High field voltage induced by high rotor temperature or low power factor loads) | Remove blockages to generator air flow at the front inlet air grill; Reduce the number of appliances running at the same time, especially those with high motor starting loads, such as air conditioners; Have air conditioners and other appliances checked for proper operation. (A locked compressor rotor can cause very low power factor.) | |
| 38 | Troubleshoot − Fault Code 38 | Reduce coach loads; Cool inverter; Engine performance issue; Fuel supply for sucking air; Governor operates smoothly; High idle speed; Current transformer for shorts/opens | Fuel flow test |
| 38 | Field overcurrent — Too many low-power-factor-causing loads were connected | Reduce the number of air conditioners running at the same time (and other appliances that cause low power factor); Have the air conditioners and other appliances checked for proper operation. (A locked compressor rotor can cause very low power factor.) | |
| 38 | OVERCURRENT FAULT (Too many loads connected) | Reduce the number of appliances running at the same time, especially those with high motor starting loads such as air conditioners. Start up with no load and let the genset run for five minutes to cool down the inverter; If the appliance and air conditioner loading patterns have remained the same but genset performance has deteriorated: Check for fuel and air leaks at each fitting in the fuel supply line. (Note: White smoke indicates air in the fuel.); Conduct a fuel flow test and service as necessary (p. 14-1); Remove the front and top housing panels (p. 6-3). Check for binding in the governor mechanism by pushing the actuator rotor clockwise by hand—against the action of the fuel rack return spring (Figure 13-1). It should rotate smoothly about 1/2 inch (12 mm) and return smoothly. If it binds or catches, remove the governor actuator base assembly and replace it or service the internal engine governor mechanism (Figure 13-2) as necessary; Readjust high-idle speed (p. 13-4); Service the fuel injectors and injection pump as necessary (p. 12-1); Service a worn engine (p. 12-1) | |
| 38 | Field overload fault (too many low power factor loads) | Too many appliances running at the same time, especially those with high motor starting loads such as air conditioners | Reduce the number of appliances running at the same time, especially those with high motor starting loads such as air conditioners. |
| 38 | Field Overflow | Check: Output voltage; Frequency; Loads; Air inlet | |
| 38 | Excessive engine moisture | ||
| 39 | LOW BATTERY VOLTAGE — Marginal battery, connections, or charging system, or parasitic loads | If power supply shutdown is indicated and battery voltage < 9.5V during wakeup state | Clean and tighten the positive (+) and negative (-) battery cable connections at the battery and genset (Page 3-5); Recharge or replace the battery. Refer to the battery manufacturer's recommendations; If the genset is so equipped, test battery charging regulator A1 (Page 5-6) |
| 39 | Troubleshoot − Fault Code 39 (Prior to Spec F only) | Battery connections at set and battery; Battery condition | |
| 39 | Weak battery alert — The controller sensed that battery voltage was less than 12 volts while the genset was running | Clean and tighten the positive (+) and negative (–) battery cable connections at the battery and at the genset; Recharge or replace the battery. Refer to the battery manufacturer's recommendations.; Check for and remove any parasitic loads on the battery. | |
| 40 | Pre High Coolant Temp. | ||
| 41 | Generator Rotor — Indicates control is unable to sense field or output voltage. | Control is unable to sense field or output voltage | Contact local dealer or distributor |
| 41 | SHORTED ROTOR FAULT—CODE NO. 41 — The rotor circuit is shorted to ground | See an authorized Onan dealer. | |
| 41 | Alternator Rotor Fault | ||
| 41 | Grounded rotor — F+ grounded | F+ grounded | Disconnect connector P3 (green) from controller A1 (Page 4-1) and check for continuity between Pin 7 (F+) and B- (ground). Pin 7 should not be grounded. Repair or replace wiring and/or the exciter stator (Page 5-2), as necessary; Replace controller A1 (Page 4-1) |
| 41 | GROUNDED FIELD — F+ grounded | Disconnect connector P3 (green) from genset controller (Page 5-1) and check for continuity between Pin 7 (F+) and B- (ground). P3-7 should not be grounded. Repair or replace wiring, brushes and slip rings (Page 6-3) or rotor (Page 6-4), as necessary; Replace genset controller (Page 5-1) | |
| 41 | Generator field fault shutdown — The controller sensed a short in the field circuit while the genset was running | See the Service Manual. | |
| 41 | Pre Low Oil Pressure | Check and adjust oil level or replace oil pump. | |
| 42 | Processor — Indicates that a microprocessor ROM error occurred during self test. | A microprocessor ROM error occurred during self test | Contact local dealer or distributor |
| 42 | ROM fault — During startup the genset Controller detected a ROM memory error | See an authorized Onan dealer. | |
| 42 | Troubleshoot − Fault Code 42 (Beginning with Spec F and Replacement Inverters) | Verify fault code | |
| 43 | Processor — Indicates that a microprocessor RAM error occurred during self test. | Faulty program | Contact local dealer or distributor |
| 43 | Control Card Failure - RAM — During startup the generator set Controller detected a RAM memory error | During startup the generator set Controller detected a RAM memory error | See an authorized Cummins Onan Service Representative |
| 43 | Troubleshoot − Fault Code 43 (Beginning with Spec F and Replacement Inverters) | Verify fault code | |
| 43 | 1000 hour service alert — The genset has accumulated another 1000 hours of operation since the last service alert | Perform the required maintenance according to Periodic Maintenance. The alert can only be reset by means of a software command via network or PC. See your authorized Onan dealer. | |
| 44 | Code No. 44 — not assigned a fault | ||
| 45 | Speed Sense — Indicates the control is unable to sense quadrature frequency. | Loads, generator windings, wire connections | Contact local dealer or distributor |
| 45 | SPEED SIGNAL LOST — Shutdown | Indicates that no magnetic pickup pulses were sensed for a Loss of Speed delay. If a magnetic pickup is not installed, then speed sensing is performed by monitoring AC line frequency. | Inspect the wires/connector pins, and repair or replace as necessary; To isolate the problem, reset the control and attempt to start the set. If 72 (Fail To Crank) is displayed, or if the engine starts, but then shuts down on 45 (Speed Signal Lost), the MPU sender could be bad. Remove the MPU connectors and check for 3.5 to 15 VAC at the MPU while cranking. If no output, check for damage or debris. Also check for improper adjustment of the MPU. (Refer to Section 7.11.) If there is still no output, replace the MPU sender. If the MPU output is OK, check for MPU voltage at P11-12 (MAG PICK+) to P11-24 (MAG PICK-) while cranking. If OK, replace the Base board. If not OK, use continuity checks to isolate connectors/harness. If the engine starts and idles, and does not display a fault, then there could be a frequency mismatch problem. Measure generator output frequency with a digital Multimeter and compare to the frequency on the operator panel or PC based service tool. Verify number of flywheel teeth has been correctly configured (see Section 7.11.1). If they do match, multiply the frequency by 30 and compare this number to the RPM on the operator panel or PC based service tool. If these are not the same, the MPU sender may be bad. Replace the MPU sender. If the Multimeter and control frequencies do not match, there is a frequency sensing problem within the Base board. Replace Base board |
| 45 | Zero Cross Sense Loss | Check field flash; quad voltage; quad winding; quad wiring; rotor and brushes; control | |
| 45 | Low oil pressure cut-off | Check crankcase oil level regularly | |
| 46 | Generator Set Overload | Loads, wire connections, windings | Reduce the number of connected loads especially loads that require higher starting current such as air conditioners; Check and service air filter as necessary; Have unit serviced by an authorized Cummins Onan dealer. |
| 46 | Troubleshoot − Fault Code 46 (Beginning with Spec F and Replacement Inverters) | Voltage at set during cranking; Voltage at starter during cranking; Battery connections at set and battery; Battery condition; Set charging system, if equipped | Verify fault code |
| 46 | INVERTER POWER SUPPLY FAULT—CODE NO. 46 | Low battery voltage or power supply device failure | Avoid running the genset while cranking the vehicle engine in installations where the genset batteries are used to supplement the vehicle engine batteries; Clean and tighten the positive (+) and negative (−) battery cable connections at the battery, vehicle frame and genset (Page 16); Recharge or replace the battery. Refer to the battery manufacturer's recommendations; Install or service a battery charging system in the vehicle if the genset is not so equipped |
| 46 | HIGH AC CURRENT — Shutdown | Indicates that alternator output current (one or more phases) has exceeded 150% of the rated output current continuously for more than 10 seconds. | Check load and load lead connections. |
| 46 | Genset overload — The genset Controller shutdown the genset because engine load exceeded 135 percent of genset rating for 10 seconds | The genset Controller shutdown the genset because engine load exceeded 135 percent of genset rating for 10 seconds | Reduce the number of loads on the genset |
| 46 | Overcrank | Check fuel pressure; spark; battery level; control | |
| 46 | Loss of battery (B+) alert — The control must be reset after the battery is reconnected—which prevents false genset startup | Push the control switch to OFF and then to AUTO or RUN. Clean and tighten the positive (+) and negative (–) battery cable connections at the battery and at the genset to prevent intermittent connections. | |
| 46/216 | High AC Current (Shutdown/Warning) — No action is taken by the control for code 216. Engine will shut down for code 46. | Fault threshold are not set correctly with PC based service tool; Short or Overload; Incorrect CTs, CT Connections, or CT setup; The problem may be the Base board or harness connections; Incorrect rating setup | Reset the threshold to the desired or correct setting. Determine the required operating range before adjusting the threshold; Check the load and load cables. Repair if necessary. Check operation by disconnection load and restarting generator set; Check CTs, CT connections, correct if necessary. Refer to Current Transformer Setup in Section 6.6; Remove connector P12 from Base board. Check continuity from P12 to CTs. P12-1 (CT1) to P12-4 (CT1-COM) P12-2 (CT2) to P12-5 (CT2-COM) P12-3 (CT3) to P12-6 (CT3-COM) Repair connections; Check rating setup in control. Correct if necessary |
| 47 | Ignition fault (Controller unable to sense ignition) | The control is unable to sense ignition | See an authorized Onan dealer. |
| 47 | Excessive White Exhaust Smoke at Start-up (Warm Engine) | -Check: -Glow plug operation -Low engine operating temperature -Valve settings -Air leaks in fuel system | |
| 47 | Reference voltage fault shutdown — The controller sensed an open or short in the reference voltage circuit | See the Service Manual. | |
| 48 | Generator Field Sense — Indicates the control is unable to sense field voltage. | The control is unable to sense field voltage | Contact local dealer or distributor |
| 48 | Field Sense Lost - RAM — Controller unable to sense field voltage | See an authorized Cummins Onan Service Representative | |
| 48 | Excessive White Exhaust Smoke at Start-up (Cold Engine) | -Check: -Glow plug operation -Air leak in fuel system -Valve settings | |
| 48 | Processor failure — Controller unable to sense field voltage | Controller unable to sense field voltage | Replace controller A1 (Page 4-1) |
| 48 | Field sense lost fault (controller failed to sense field voltage) | Controller failed to sense field voltage | Replace the genset control PCB (see Section 8). |
| 48 | Remote shutdown — The remote controller shut down the genset | Reset the controller by pushing the control switch to OFF and then back to AUTO. | |
| 48 | Emergency Stop | ||
| 51 | High Current warning/shutdown | Implementation of the thermal damage curve with instantaneous trip level calculated based on current transformer ratio and application power rating. | |
| 51 | Processor Failure — Processor error | Faulty control | Verify that Last Fault is FC 51: Yes, continue diagnosis; No, troubleshoot actual last fault; Replace control. |
| 52 | Fuel Injector Fault — Open or shorted fuel injector | P1–17, wire connections, fuel injector | Verify that Last Fault is FC 52: Yes, continue diagnosis; No, troubleshoot actual last fault; Measure P1–17 open to ground on EFI set: ground lead as required for carburetor configuration; Inspect connector at injectors for looseness and damage, repair or replace connector as necessary; Disconnect genset control P1 connector, verify P1 pins are fully inserted and inspect pin condition per PSB–676: insert, repair or replace pins as necessary; Reconnect P1 connector and test run genset for fault occurrence: repair or replace pins in connector as necessary; Measure for continuity between P1–23 – INJ1 and P1–35 – INJ2: repair or replace harness as necessary; Measure for continuity to ground from P1–23, P1–35, INJ1 and INJ2: repair or replace harness as necessary; Replace injector; Dealers contact Distributor for technical support, Distributors contact factory for technical support. |
| 54 | MAT Sensor Fault — MAT sender input greater than 300K ohms | P1–17, wire connections, MAT sender | Verify that Last Fault is FC 54: Yes, continue diagnosis; No, troubleshoot actual last fault; Measure P1–17 open to ground on EFI set: ground lead as required for carburetor configuration; Inspect connector at sender for looseness and damage, repair or replace connector as necessary; Disconnect genset control P1 connector, verify P1 pins are fully inserted and inspect pin condition per PSB–676: insert, repair or replace pins as necessary; Reconnect P1 connector and test run genset for fault occurrence: repair or replace pins in connector as necessary; Measure for continuity across harness between P1–25 – MAT(A) and P1–20 – MAT(B): repair or replace harness as necessary; Measure resistance of MAT: Replace sender as necessary; Dealers contact Distributor for technical support, Distributors contact factory for technical support. |
| 54 | MAT sender fault — Open or short circuit in MAT sender | Open or short circuit in MAT sender | See an authorized Onan dealer. |
| 56 | MAP Sensor Fault — MAP sensor input less than 50kPa at start | P1–17, ambient pressure/altitude, wire connections, MAP sender, wide open throttle (WOT) during start | Verify that Last Fault is FC 56: Yes, continue diagnosis; No, troubleshoot actual last fault; Measure P1–17 open to ground on EFI set: ground lead as required for carburetor configuration; Verify ambient pressure greater than 50kPa: change altitude; Inspect connector at sender for looseness and damage: repair or replace connector as necessary; Disconnect genset control P1 connector, verify P1 pins are fully inserted and inspect pin condition per PSB–676: insert, repair or replace pins as necessary; Reconnect P1 connector |
| 56 | MAP sender fault — Open or short circuit in MAP sender | Open or short circuit in MAP sender | See an authorized Onan dealer. |
| 57 | Over Prime — Indicates that priming exceeded 3 minutes. | EC30 is sending a continuous stop signal; can occur when DC disconnect switch is on, EC 30 is in manual mode for 30 days or more, and the safety signal or DC disconnect switch have not been toggled | Check control switch: check for and remove any object that may be holding either control switch (remote or generator set) in the STOP/PRIME position |
| 57 | Overprime — A local or remote control switch was held in the prime position for more than 5 minutes | Prime mode exceeded 3 minutes | Check for and remove any object that may be holding any control switch (local or remote) in the prime position |
| 58 | High Exhaust Temperature — Exhaust temperature exceeded design limits due to lack of water delivered to the exhaust/water mixer | Exhaust temperature exceeded design limits | Check for disconnected, kinked, or leaking water hoses and reconnect, reroute, or replace; Check for and clean a blocked sea water strainer. If strainer is above the water line, fill with water to assist priming; Inspect the siphon break (if provided) for proper operation; If loose, reconnect terminals S5+ and S5- to high exhaust temperature switch S5; Check for a worn raw water impeller and replace as necessary; Clean the heat exchanger; Disconnect connector P1 (black) from generator set controller and check continuity between Pin 11 and terminal S5+ and between terminal S5- and B- (ground). Repair wiring and connectors as necessary; Test high exhaust temperature switch S5 and replace as necessary; Replace the generator set controller |
| 58 | Exhaust Gas Temp Shutdown/Fault | Exhaust gas temperatures reach 650C (1202F) for 2 secs when the set is running | See an authorized Onan dealer |
| 59 | High AC voltage shutdown — Output voltage on any phase exceeds preset values; time to trip is inversely proportional to amount above threshold | Output voltage on any phase exceeds preset values. Time to trip is inverse. | |
| 59 | Low Coolant Level — The engine coolant level fell below the optional coolant level sensor | Exhaust temperature exceeded design limits | Add coolant as necessary and repair leaks |
| 59 | Output voltage on any phase exceeds preset values. | ||
| 61 | External Shutdown — The generator set was shut down by a fire suppression system or other external control | The generator set was shut down by a fire suppression system or other external control | Make all necessary repairs to the generator set and connected equipment. Reset the external control which shut down the generator set |
| 61 | Emergency shutdown — Genset was shut down by a fire suppression system or other external control | Genset was shut down by a fire suppression system or other external control | Make all necessary repairs to the genset and connected equipment and reset the external control which shut down the genset; Disconnect the external wiring connected at connector J6 and check for B+. If there is B+, find out why and reconnect or repair the external control circuit |
| 61 | REMOTE E-STOP — Lamp: Shutdown; Indicates remote Emergency Stop activation | Deactivate (disable) remote emergency stop button; Move the rocker switch to the OFF position or press the OFF button; Select the desired operating mode (manual or remote) | |
| 62 | Low Battery Volts | ||
| 63 | Low Fuel | Refuel the generator set. | |
| 71 | SPEED HZ MATCH — Shutdown | Indicates that measured engine speed and measured alternator AC output frequency do not agree. | Check genset setup for number of flywheel teeth. |
| 72 | Lost NIM Communications | The generator set controller lost communication with the NIM for 15 seconds | See an authorized Cummins Onan service representative |
| 72 | FAIL TO CRANK — Shutdown | The genset has failed to sense rotation for two start attempts. This indicates a possible fault with the control, speed sensing, or the starting system. | See fault code 213 for corrective action |
| 73 | FAIL TO START — Shutdown | The genset has failed to start after a set number of crank attempts. This indicates a possible fuel system or air induction problem (engine cranks but fails to start). | Open any closed fuel shutoff valve; Replace the gas solenoid fuse on the control panel if open; Check for dirty or plugged air filter and replace if necessary; Gaseous fuel delivery to the set is inadequate. Contact an authorized service center for service; Reset the control and restart after correcting the problem |
| 74 | FAIL TO STOP — Shutdown | The genset continues to run after receiving a shutdown command from the controller. | |
| 75 | Customer Input 1 — Shutdown | The nature of the fault is an optional customer selection. | Each of the fault functions can be programmed (using InPower service tool or access to Setup menu), as follows: Warning or Shutdown (Default = Warning) (See fault code 204 for Warning); Change display name using up to 32 characters |
| 75/76 | Configurable Input (Shutdown) — Shutdown. | If there is no actual fault, the problem may be an external wiring problem | Disconnect the signal lead from TB1 and reset the control. Check the following two points. CUST_IN1 – TB1-14 CUST_IN2 – TB1-12 If the message drops out, the external wiring has a short circuit. Grounding of either input activates fault |
| 76 | Alternator Over Temp | Wire connections, faulty temperature sensor, faulty DC fan, blocked intake or exhaust openings. | Verify the generator set enclosure for clear intake and exhaust openings; Have unit serviced by an authorized Cummins Onan dealer. |
| 76 | Customer Input 2 — Shutdown | The nature of the fault is an optional customer selection. | |
| 77 | Shutdown After Battle Short — displayed when the Battle Short feature is disabled after an overridden shutdown fault occurred whilst in Battle Short mode | ||
| 77 | SHUTDOWN AFTER BS — Shutdown | A shutdown fault occurred while the Battle Short mode was enabled. | Check fault history for faults that may have been bypassed. |
| 78 | Low Fuel Pressure | Wire connections, fuel system, fuel pressure switch | Open any closed fuel valves; Have unit serviced by an authorized Cummins Onan dealer. |
| 79 | Failure To Transfer To Generator Set | Wire connections, faulty positional switch, faulty transfer switch component(s). | Verify that the main AC circuit breaker on the generator set is to "On"; Have unit serviced by an authorized Cummins Onan dealer. |
| 80 | Exhaust smoke excessive under load | ||
| 81 | Exhaust Gas Temperature Sensor Open | Contact local dealer or distributor | |
| 81 | Annunciator Fault 1 — Shutdown | The nature of the annunciator fault is an optional customer selection. | |
| 81 | Under frequency shutdown - Genset output frequency cannot be maintained. Settings are adjustable from 2-10 Hz below reference governor set point, for a 5- 20 second time delay. | ||
| 81 | OVERPRIME SHUTDOWN | While running, EGT temp falls below 60C (140F) for 2 minutes - OR - if EGT temperature is not above 60C (140F) after 2 minutes from starting, set will shut down | See an authorized Onan dealer |
| 81 o | Generator set is operating at a potentially damaging frequency level. | ||
| 81 o | Over frequency shutdown/warning | Generator set is operating at a potentially damaging frequency level. | Generator set is operating at a potentially damaging frequency level. Settings are adjustable from 2-10 Hz above nominal governor set point for a 1-20 second time delay. Default: 6 Hz, 20 seconds, disabled. |
| 81 u | Generator set output frequency cannot be maintained. | ||
| 81 u | Under frequency shutdown | Generator set output frequency cannot be maintained. | Generator set output frequency cannot be maintained. Settings are adjustable from 2-10 Hz below reference governor set point, for a 5-20 second time delay. Default: 6 Hz, 10 seconds. Over frequency shutdown/warning is disabled when excitation is switched off, such as when engine is operating in idle speed mode. |
| 81-83 | Annunciator Fault 1 − 3 — Shutdown | The nature of the annunciator fault is an optional customer selection. | |
| 81u | Under frequency shutdown | ||
| 82 | Exhaust Gas Temperature Sensor Shorted | Contact local dealer or distributor | |
| 82 | Annunciator Fault 2 — Shutdown | The nature of the annunciator fault is an optional customer selection. | |
| 82 | Exhaust Gas Temp Shutdown/Fault | With the set running and/or startup - control reads 1000C (1832F) for 1 second | See an authorized Onan dealer |
| 83 | Annunciator Fault 3 — Shutdown | The nature of the annunciator fault is an optional customer selection. | |
| 84-91 | Base I/O Module Input 1 − 8 — Shutdown | The nature of the Base I/O Module “Fault” is an optional customer selection. | Each of the fault functions can be programmed (using InPower service tool or access to Setup menu), as follows: Warning, Shutdown or Event (Default = Warning) (See fault code 226−233 for Warning and code 163−170 for Event); Change display name using up to 32 characters |
| 84-91 | AUX I/O MODULE INPUT 9−12 — Lamp: Shutdown; The nature of the fault is an optional customer selection. Example inputs: Low Fuel Day Tank, Water In Fuel, Ground Fault, etc. | Each of the fault functions can be programmed (using InPower service tool or access to Setup menu), as follows: Warning, Shutdown or Event (Default = Warning) (See fault code 234−237 for Warning and code 171−174 for Event); Change display name using up to 32 characters | |
| 86 | Excessive fuel consumption | ||
| 92 - 95 | AUX I/O MODULE INPUT 9 – 12 — Lamp: Shutdown; The nature of the Aux I/O Module fault is an optional customer selection. Example inputs: Low Fuel Day Tank, Water In Fuel, Ground Fault, etc | Each of the fault functions can be programmed (using InPower service tool or access to Setup menu), as follows: Warning, Shutdown or Event (Default = Warning) (See fault code 234–237 for Warning and code 171–174 for Event); Change display name using up to 32 characters. | |
| 92-95 | Aux I/O Module Input 9 − 12 — Shutdown | The nature of the Aux I/O Module “Fault” is an optional customer selection. | |
| 96 | OIL TEMP HIGH — Lamp: Shutdown; Indicates that the engine oil temperature is above normal and has reached the shutdown trip point. (I/O Module option.) | ||
| 98 | AMBIENT TEMP HIGH — Lamp: Shutdown; Indicates ambient temperature is above normal and has reached the shutdown trip point. (I/O Module option.) | Air temperature in genset room has risen above the shutdown trip point | Check genset room ventilation system (vents/ducts for blockage and dampers/louvers for proper operation) |
| 98-4001 | Engine is not getting fuel. | Prime the fuel system. Check fuel supply and fuel solenoid. If necessary, check for fuel tank empty, shutoff valves binding, linkage loose or broken wires, fuel lines kinked, loose connections, clogged fuel filters, and transfer pump. | |
| 99 | FUEL LEVEL LOW — Lamp: Shutdown; Indicates that fuel level has reached the shutdown trip point. (I/O Module option.) | ||
| 101 | IDLE MODE — WARNING; Engine continues to operate at reduced RPM. | Indicates that the engine is operating in idle mode. When the set is operating in the RUN mode, grounding the engine idle input causes generator build-up to be inhibited and the engine to be governed at 800 RPM. | When ground is removed from this input, the set returns to normal speed and voltage. When the engine idle function is enabled, the control automatically sets lower oil pressure warning and shutdown trip points to reflect the lower operating speed. When the engine idle function is removed and the set reverts to normal operating speed, the control automatically resets oil pressure warning and shutdown trip points to the normal settings. |
| 102 | EMERGENCY STOP — SHUTDOWN; Engine shuts down and will not crank. | Indicates local or remote Emergency Stop. | To reset the local Emergency Stop button: Pull the button out or turn the switch clockwise (button with arrow) and allow it to pop out; Move the Run/Off/Auto switch to Off; Press the Reset switch; Select Run or Auto, as required. |
| 102 | VOLTAGE BIAS OOR — Lamp: Shutdown; Indicates the voltage bias circuit output is out of range (OOR), high or low. (I/O Module option.) | Indicates the voltage bias circuit output is out of range (OOR), high or low. (I/O Module option.) | |
| 103 | SPEED BIAS OOR — Lamp: Shutdown; Indicates the speed bias circuit output is out of range (OOR), high or low. (I/O Module option.) | Indicates the speed bias circuit output is out of range (OOR), high or low. (I/O Module option.) | |
| 106 | I/O MODULE LOST — Lamp: Shutdown; Indicates the data link between the I/O module and the Base board is lost | Indicates the data link between the I/O module and the Base board is lost. | |
| 111 | Internal ECM error | ||
| 111 | Engine Control Module - Critical internal failure | ||
| 112 | Actuator not responding | ||
| 112 | Stop | ||
| 112/212 | AC output over voltage | Very large AC loads dropped quickly—8 kW step or greater; Defective Inverter/Charger component | Reduce AC loads.; Cycle the Hybrid Power System by disconnecting Shore Power (if connected) and turning the Coach DC Disconnect Switch to Disconnect. Wait 10 seconds and then turn it back to Connect. |
| 113 | Actuator sensor fault | ||
| 113 | Engine Timing Actuator Circuit - shorted high | ||
| 113/213 | AC output under voltage | Very large AC transient load—8 kW step or greater; System overloads: In Inverter Mode, loads greater 3kW; In Generator Mode, loads greater than 10kW; Low PMA voltage or Engine Power; Defective Inverter/Charger component | Turn the air conditioning thermostat OFF, restart Generator Mode or connect Shore Power, and then turn the thermostat ON again. (This resets the thermostat so that it will start the air conditioners in sequence rather than all at once, greatly reducing the AC transient load on the Hybrid Power System.); Reduce AC loads to see whether problem persists. |
| 114 | Engine Timing Actuator Circuit - shorted low | ||
| 114/214 | Loss of synchronization | Secondary/Primary Inverter/Charger shut down without issuing a fault; Communications cable is faulty or missing; Extremely unbalanced loads between the primary & secondary inverters will lead to synchronization issue or Fault Code 114/214 | Contact an authorized Cummins Onan dealer. |
| 115 | Speed signal lost | ||
| 115 | Engine Speed Sensor (ESS) Circuit — Engine is shutdown and can not be run. Common Alarm output is energized. | No engine speed detected between pins 21 and 22 of the engine harness connector. | Check the ESS (inspect the ESS and the engine harness connector pins; inspect the ESS; check for an open circuit in the ESS; check for a short circuit to ground in the ESS; check for a short circuit between coils of the ESS); check the engine harness (inspect the engine harness and ECM connector pins; inspect the engine harness adaptor cable and the engine harness extension cables; check for an open circuit in the signal and return wires; check for a short circuit to ground in the signal and return wires; check for a short circuit from the signal and return wires to all other wires in the engine harness); clear fault codes using INSITE, Part No. 3825145. |
| 115 | Eng Crank Sensor Error | ||
| 115 | Oil Pressure Low | Check for low oil and add oil as necessary | |
| 115/215 | Inverter fault | The Inverter/Charger that detected the fault in the other Inverter/Charger also shuts down | Contact an authorized Cummins Onan dealer. |
| 116 | Time press sensor high | ||
| 116 | Fuel Timing Pressure Sensor Circuit - shorted high | ||
| 116/216 | Boost over temperature | Insufficient cooling (liquid not air flow); Defective Inverter/Charger component | Check the system for coolant leaks. |
| 117 | Time press sensor low | ||
| 117 | Fuel Timing Pressure Sensor Circuit - shorted low | ||
| 117/217 | Charger over temperature | Insufficient cooling (liquid not air flow); Defective Inverter/Charger component | Check the system for coolant leaks. |
| 118 | Pump press sensor high | ||
| 118/218 | Inverter over temperature | Insufficient cooling (liquid not air flow); Defective Inverter/Charger component | Check the system for coolant leaks. |
| 119 | Pump press sensor low | ||
| 119/219 | AC output short circuit | Loads are too large; External short; Internal Inverter/Charger component has failed | Reduce Loads. |
| 121 | Speed Signal Lost — Shut down | Loose or damaged magnetic pickup (MPU) wires/connector pins. | Inspect the wires/connector pins, and repair or replace as necessary. |
| 121 | Loss of Speed Sense (Shutdown) — No engine speed signal detected from one of two signals: engine crankshaft speed or engine camshaft position | Faulty Magnetic Pickup (MPU) sensor connections and wiring; improper installation of the MPU sensor; faulty MPU sensor; incorrect calibrations in PowerCommand controls; faulty control board; damaged flywheel ring gear | Inspect the MPU sensor and the main harness connector pins: disconnect the main harness connector from the MPU sensor; inspect for corroded, bent, broken, pushed back, expanded, or loose pins |
| 122 | Manifold air press sensor high | ||
| 123 | Manifold air press sensor low | ||
| 123 | High coolant temperature | Check for low coolant level and add coolant and repair leaks as necessary; Remove obstructions to air flow; Open stuck air dampers; Service the engine cooling system | |
| 124 | High manifold pressure | ||
| 124 | High coolant temperature | Check for low coolant level and add coolant and repair leaks as necessary; Remove obstructions to air flow; Open stuck air dampers; Service the engine cooling system | |
| 124/224 | Battery temperature sensor fault | Sensor is disconnected or broken; Sensor or sensor wires are corroded | Contact an authorized Cummins Onan dealer. |
| 125 | Low Intake Manifold Pressure Left Bank | ||
| 125/225 | High DC bus voltage | Very large AC loads drop quickly—8 kW step or greater; Engine speeds up too fast under light load | Reduce AC load. |
| 126 | High Intake Manifold Pressure Right Bank | ||
| 126/226 | Boost temperature sensor fault | Defective Inverter/Charger component | If ambient temperatures are extreme, wait until temperatures reach normal range to see whether the problem persists. |
| 127 | Low Intake Manifold Pressure Left Bank | ||
| 127/227 | Charger temperature sensor fault | Defective charger component | If ambient temperatures are extreme, wait until temperatures become more normal to see whether the problem persists. |
| 128 | Right Bank Intake Manifold Pressure Sensor Circuit Failed High | ||
| 128/228 | Inverter temperature sensor fault | Defective Inverter/Charger component | If ambient temperatures are extreme, wait until temperatures become more normal to see whether the problem persists. |
| 129 | Right Bank Intake Manifold Pressure Sensor Circuit Failed Low | ||
| 129/229 | High battery voltage | Batteries are misconnected; External battery charger or charger connections | Check battery cables and connections.; If an external battery charger is connected, verify connections. |
| 131 | Accelerator Pedal Position Sensor Circuit - shorted high | ||
| 131/231 | Inverter over temperature | Insufficient air flow | Check Inverter/Charger enclosure airflow.; Remove bags and other items stored in the enclosure.; Remove items blocking the Inverter/Charger air inlet and outlet openings. |
| 132 | Accelerator Pedal Position Sensor Circuit - shorted low | ||
| 132/232 | Inverter temperature sensor fault | Defective Inverter/Charger component | If ambient temperatures are extreme, wait until temperatures become more normal to see whether the problem persists. |
| 133 | Remote Accelerator Pedal Position Sensor Circuit - shorted high | ||
| 134 | Remote Accelerator Pedal Position Sensor Circuit - shorted low | ||
| 134/234 | Boost current fault | Loads greater than 8kW were rapidly and repeatedly cycled while boosting | Reduce AC transient loads. |
| 135 | Oil pressure sensor high | Fault simulation was enabled with In-Power. | With InPower, verify that the fault simulation is not enabled for the oil pressure sensor. If you do not have InPower, remove battery power from the control to disable fault simulation overrides. |
| 135 | QST30 G-Drive Fault Code 135 | Repair or replace the engine harness, repair the engine harness adaptor cable or engine harness extension cable(s), whichever is found faulty | |
| 135/235 | Inverter processor fault | Inverter/Charger EE memory did not download completely; Inverter/Charger EE memory failed | Contact an authorized Cummins Onan dealer. |
| 136 | Pre Filter Oil Pressure Sensor Circuit Failed High | ||
| 136/236 | Power Unit under voltage | Engine speed did not ramp up fast enough to meet a large transient load; PMA is faulty; Governor actuator is faulty; This occurs under unbalanced load operation in the field; Windings of the primary inverter have voltage sensing capability. 3 phase windings from Power Unit maybe reversely connected to the primary and secondary inverters. This causes the Power Unit to drop the voltage when load was only applied to the primary inverter since the alternator was actually sensing the secondary inverter voltage instead of the primary inverter voltage | Reduce loads. |
| 137 | Oil Inlet Pressure Low Error | ||
| 137 | Pre Filter Oil Pressure Sensor Circuit Failed Low | ||
| 137/237 | Invalid system configuration | The system is not configured correctly | Contact an authorized Cummins Onan dealer. |
| 138/238 | High AC current | Too many loads on at once | Reduce loads.; Check loads for short circuits. |
| 139/239 | Low battery voltage | Loads were greater than 8 kW for too long while running in Inverter Mode; The battery cables are too long; The battery cable connections are miswired, loose or corroded; Charging circuit not functioning; Batteries are wearing out | Reduce loads.; Verify battery connections.; Charge batteries.; Check battery size.; Test batteries. |
| 141 | Oil pressure sensor low | Fault simulation was enabled with InPower. | With InPower, verify that the fault simulation is not enabled for the oil pressure sensor. If you do not have InPower, remove battery power from the control to disable fault simulation overrides. |
| 141/241 | Power Unit breaker open | Breaker on Power Unit is open; There is an open/loose connection between Power Unit and Inverter/Charger; There is an open/loose connection in Power Unit between PMA and circuit breaker | Check Power Unit circuit breaker. |
| 142 | Oil Overpressure | ||
| 142/242 | Inverter processor fault | Inverter/Charger Program memory did not download completely; Inverter/Charger EE memory failed | Contact an authorized Cummins Onan dealer. |
| 143 | Low oil pressure | Fault simulation was enabled with InPower. | With InPower, verify that the fault simulation is not enabled for the oil pressure sensor. If you do not have InPower, remove battery power from the control to disable fault simulation overrides. |
| 143 | Pre-Low Oil Pres | Engine oil pressure has dropped below the warning trip point | If generator is powering critical loads and cannot be shut down, wait until next shutdown period and then follow code 415 procedure. |
| 143/243 | Inverter processor fault | Inverter/Charger Data memory did not download completely; Inverter/Charger EE memory failed | Contact an authorized Cummins Onan dealer. |
| 144 | Coolant temp sensor high | Fault simulation was enabled with InPower. | With InPower, verify that the fault simulation is not enabled for the coolant sensor. If you do not have InPower, remove battery power from the control to disable fault simulation overrides |
| 144 | Coolant temperature sensor | High voltage detected at engine coolant temperature sensor signal pin 14 of the engine harness Electronic Control Module (ECM) Connector; voltage above 4.60 VDC on pin 14 can be caused by opens in the signal or return wires, voltage shorts to the signal or return wires, or a failed open sensor. | Check for an open in the signal and return wires; check for an open in the engine harness adaptor cable and any engine harness extension cable used; disable the fault code; clear the inactive fault codes using INSITE, Part No. 3825145. |
| 144 | COOLANT SENSOR OOR LOW — Warning | The coolant temperature sensor output is out of range (OOR), low. | For the troubleshooting procedure, refer to DTC 118 in the E-Controls Service Manual |
| 144 | COOL SENSOR HIGH — No engine protection for coolant temperature during genset operation. Possible white smoke. | Fault simulation was enabled with InPower | With InPower, verify that the fault simulation is not enabled for the coolant sensor. If you do not have InPower, remove battery power from the control to disable fault simulation overrides. |
| 145 | Coolant temp sensor low | Fault simulation was enabled with InPower. | With InPower, verify that the fault simulation is not enabled for the coolant sensor. If you do not have InPower, remove battery power from the control to disable fault simulation overrides. |
| 145 | Coolant temperature sensor | Check for an open in the signal and return wires; check for an open in the engine harness adaptor cable and any engine harness extension cable used; disable the fault code; clear the inactive fault codes using INSITE, Part No. 3825145. | |
| 145 | COOLANT SENSOR OOR HIGH — Warning | The coolant temperature sensor output is out of range (OOR), high. | For the troubleshooting procedure, refer to DTC 117 in the E-Controls Manual |
| 145 | COOL SENSOR LOW — Warning. Indicates that the control has sensed that the engine coolant temperature signal is shorted low. | Check sender/connectors/wires. | |
| 145/245 | Loss of DC bus voltage | Breaker between Transfer Switch and Inverter/Charger is open; Failed Inverter/Charger component | In Inverter Mode, check battery connections and voltage; In Shore Mode, check all circuit breakers, and to verify that the Inverter/Charger is able to communicate, cycle the Hybrid Power System by disconnecting Shore Power (if connected) and turning the Coach DC Disconnect Switch to Disconnect. Wait 10 seconds and then turn it back to Connect. Note that it is possible to get fault 176/276 after closing any circuit breakers that may have tripped. |
| 146 | High coolant temp warning | Engine is operating near cooling system capacity; increase in load or higher ambient temperature may cause High Coolant Temp (151) shutdown | Reduce load if possible by turning off non-critical loads; Check air inlets and outlets and remove any obstructions to airflow; If engine can be stopped, follow 151 High Coolant Temp Alarm procedure |
| 146 | Pre-High Cool Temp — Calibration-dependent. No action is taken by the PCC for fault code 146. Engine will shut down for fault code 151. | Fault simulation was enabled with InPower. | With InPower, verify that the fault simulation is not enabled for the coolant sensor. If you do not have InPower, remove battery power from the control to disable fault simulation overrides. |
| 146 | Coolant Temperature - Engine Protection — No effect on performance. Common Warning output is energized. Pre-High Coolant Temperature relay driver is energized. | Engine coolant temperature has exceeded the warning threshold for high coolant temperature. | Verify the sensor accuracy with a thermocouple or similar temperature probe; disable the fault code; clear the inactive fault codes using INSITE, Part No. 3825145. |
| 146 | Pre-high coolant temperature (warning) — Calibration-dependent. No action is taken by the PCC for code 146. | Fault simulation was enabled with InPower | With InPower, verify that the fault simulation is not enabled for the coolant sensor; If you do not have InPower, remove battery power from the control to disable fault simulation overrides |
| 146/246 | Power supply fault | Faulty wiring; Low Battery Voltage | Contact an authorized Cummins Onan dealer. |
| 147 | Accelerator Pedal Position Sensor Circuit - low frequency | ||
| 148 | Accelerator Pedal Position Sensor Circuit - high frequency | ||
| 148/248 | Inverter current sensor fault | Defective Inverter/Charger component | Contact an authorized Cummins Onan dealer. |
| 150 | READY TO LOAD | The generator set is at rated voltage and frequency. | |
| 151 | High coolant temp alarm | Fault simulation was enabled with InPower. | With InPower, verify that the fault simulation is not enabled for the coolant sensor. If you do not have InPower, remove battery power from the control to disable fault simulation overrides. |
| 151 | Coolant Temperature - Engine Protection — Engine will shutdown. Common Alarm output is energized. High Coolant Temperature (HCT) relay driver is energized. | Engine coolant temperature has exceeded the alarm (shutdown) threshold for high coolant temperature. | Verify the sensor accuracy with a thermocouple or similar temperature probe; disable the fault code; clear the inactive fault codes using INSITE, Part No. 3825145. |
| 151 | Coolant Temperature Low - Data Valid but Above Normal Operational Range - Most Severe Level — Red | ||
| 152 | Low coolant temp | Coolant heater not connected to power supply; Low jacket water coolant level | Check for blown fuse or disconnected heater cord and correct as required; Check for low jacket water coolant level and replenish if required. Look for possible coolant leakage points and repair as required |
| 153 | Manifold air temp sensor high | ||
| 153 | High intake manifold temperature. — No effect on engine performance. | The intake manifold temperature sensor is out of range (OOR), high. | Check specifications of the sensor; Check whether the sensor is shorted to 12 VDC. Replace engine harness if so. |
| 153 | High Intake Manf 1 Temp | ||
| 153 | NOT IN AUTO | Indicates that the PCC1301 control is not in the Auto mode. | |
| 154 | Manifold air temp sensor low | ||
| 154 | Low intake manifold temperature. — No effect on engine performance. | The intake manifold temperature sensor is out of range (OOR), low. | Check specifications of the sensor; Check whether the sensor is shorted to ground. Replace engine harness if so. |
| 154 | Low Intake Manf 1 Temp | ||
| 155 | Manifold air temp alarm | ||
| 155 | High auxiliary temp. — No effect on engine performance. | Check whether the sensor is shorted to ground. Replace engine harness if so. | |
| 155 | INTAKE MANIFOLD TEMP HIGH — Shutdown | The intake manifold temperature sensor is above normal and has reached the shutdown trip point. Large load or high ambient temperature may be the cause. | Indicates the engine has overheated (intake manifold temperature has risen above the shutdown trip point). Large load or high ambient temperature may be the cause. Review the code 151 correction list for other possible causes. |
| 155 | COMMON ALARM | The control has detected a Warning condition. | |
| 156 | Intake Manifold Temp 2 OOR High | ||
| 156 | COMMON WARNING — the control has detected a Warning fault | ||
| 156/256 | Inverter temperature sensor fault | Defective Inverter/Charger component | If ambient temperatures are extreme, wait until temperatures become more normal to see whether the problem persists. |
| 157 | Intake Manifold Temp 2 OOR Low | ||
| 157 | COMMON SHUTDOWN — the control has detected a Shutdown fault | ||
| 158 | Intake Manifold Temp 2 High | ||
| 158 | Customer Input 1 — the nature of the fault is an optional customer selection | ||
| 158/258 | High battery temperature warning | Charge/Discharge rate was too high for too long; Battery enclosure does not have sufficient airflow; Corrosion on battery sensor or cables; Bad batteries | Let batteries cool down; Reduce loads; Verify correct battery type settings; Check battery compartment for airflow; Check connections; Replace batteries. |
| 159 | Intake Manifold Temp 3 OOR High | ||
| 159 | Customer Input 2 — the nature of the fault is an optional customer selection | ||
| 161 | Intake Manifold Temp 3 OOR Low | ||
| 162 | Intake Manifold Temp 3 High | ||
| 162/262 | Inverter fan warning | Open/Loose connections (3 wire); Faulty fan | Contact an authorized Cummins Onan dealer. |
| 163 | Intake Manifold Temp 4 OOR High | ||
| 163 - 170 | BASE I/O MODULE INPUT 1 – 8 — Lamp: None; The nature of the Base I/O Module event is an optional customer selection | The nature of the Base I/O Module “Event” is an optional customer selection. | Each event function can be programmed (using InPower service tool or access to Setup menu), as follows: Change display name using up to 32 characters; Select active low or high input. |
| 163-170 | BASE I/O MODULE INPUT 1−8 — Lamp: None; The nature of the event is an optional customer selection | Each event function can be programmed (using InPower service tool or access to Setup menu), as follows: Change display name using up to 32 characters; Select active low or high input | |
| 163/263 | Boost over temperature | Insufficient air flow; Defective Inverter/Charger component | Remove load and wait 10 minutes to cool down. |
| 164 | Intake Manifold Temp 4 OOR Low | ||
| 164/264 | Boost temperature sensor fault | Defective Inverter/Charger component | If ambient temperatures are extreme, wait until temperatures become more normal to see whether the problem persists. |
| 165 | Intake Manifold Temp 4 High | ||
| 165/265 | Boost/Charger over current fault | Coolant was very hot when a large load was applied; When the system was boosting, loads greater than 8kw were rapidly and repeatedly cycled; When the system was charging there was a short to battery side of Inverter/Charger | Check coolant level and repair leaks as necessary; Turn the air conditioning thermostat OFF, restart Generator Mode or connect Shore Power, and then turn the thermostat ON again. (This resets the thermostat so that it will start the air conditioners in sequence rather than all at once, greatly reducing the AC transient load on the Hybrid Power System.) |
| 166 | Rack Position Sensor #1 Circuit - shorted high | ||
| 168/268/368/468 | Unknown fault | The software has not been updated to the proper version | Contact an authorized Cummins Onan dealer. |
| 171 | Fuel pump rack position sensor — ECM compares actual rack position with commanded rack position; if the two values do not match, the ECM will log fault code 171 | The actual fuel pump rack position does not match the commanded rack position | Check rack position sensor (check resistance of rack position sensor coil; check resistance of rack position sensor reference coil); check ECM (check rack position sensor signal pins for proper voltage); disable the fault code; clear the inactive fault codes using INSITE, Part No. 3825145. |
| 171 - 174 | AUX I/O MODULE INPUT 9 – 12 — Lamp: None; The nature of the Aux I/O Module event is an optional customer selection | Each event function can be programmed (using InPower service tool or access to Setup menu), as follows: Change display name using up to 32 characters; Select active low or high input. | |
| 171-174 | Aux I/O Module Input 9 − 12 | The nature of the Aux I/O Module “Event” is an optional customer selection. | Each event function can be programmed (using InPower service tool or access to Setup menu), as follows: Change display name using up to 32 characters; Select active low or high input |
| 171/271 | Boost over current | In Inverter Mode: Load greater than 3 kw; In Generator Mode: Load greater than 10 kw; Large transient loads when there are low batteries; Worn out or defective batteries | Reduce loads; Check battery conditions. Charge/replace if necessary. |
| 172 | Rack Actuator Position #1 Circuit - grounded circuit | ||
| 172/272 | Invalid software configuration | Inverter/Charger was shipped with functional test software | Contact an authorized Cummins Onan dealer. |
| 173 | Rack Actuator - mechanically stuck open | ||
| 173/273 | Charger output short circuit | Battery connections or condition; Loads or coach wiring | Turn the Coach DC Disconnect Switch to Disconnect: Check battery connections; Check for shorts across battery terminals; Check battery voltage; Check battery condition. |
| 174/274 | Boost fault | Alternator short to ground; Low or dead batteries; Blown battery fuse | Check battery voltage; Charge/Replace batteries if necessary; Replace the blown battery fuse (p. 6-6). |
| 175 | Throttle Control OOR High | ||
| 176 | Throttle Control OOR Low | ||
| 176/276 | Charger fault | AC distribution panel circuit breaker is OFF; There are loose or missing wires between the Inverter/Charger and the AC distribution panel; Soft start resistor in the Inverter/Charger failed | Turn the distribution panel circuit breaker ON. |
| 177 | Throttle Control Out of Adjustment | ||
| 181/281 | Communications fault | Loose or missing connection | Cycle the Hybrid Power System by disconnecting Shore Power (if connected) and turning the Coach DC Disconnect Switch to Disconnect. Wait 10 seconds and then turn it back to Connect. |
| 182/282 | Communication fault | Loose or missing connection; Failed Inverter/Charger | Cycle the Hybrid Power System by disconnecting Shore Power (if connected) and turning the Coach DC Disconnect Switch to Disconnect. Wait 10 seconds and then turn it back to Connect. |
| 183/283 | Communication fault | Loose or missing connection; ECM is asleep | Cycle the Hybrid Power System by disconnecting Shore Power (if connected) and turning the Coach DC Disconnect Switch to Disconnect. Wait 10 seconds and then turn it back to Connect. |
| 184 | Engine Control Module Identification Input State Error | ||
| 184/284 | Communication fault | Loose or missing connection | Cycle the Hybrid Power System by disconnecting Shore Power (if connected) and turning the Coach DC Disconnect Switch to Disconnect. Wait 10 seconds and then turn it back to Connect. |
| 185 | Engine Control Module Network Communication Error | ||
| 185/285 | Communications fault | Loose or missing connection | Cycle the Hybrid Power System by disconnecting Shore Power (if connected) and turning the Coach DC Disconnect Switch to Disconnect. Wait 10 seconds and then turn it back to Connect. |
| 186/286 | Communications fault | Loose or missing connection | Cycle the Hybrid Power System by disconnecting Shore Power (if connected) and turning the Coach DC Disconnect Switch to Disconnect. Wait 10 seconds and then turn it back to Connect. |
| 187 | Sensor supply 2 low | ||
| 187/287 | Communication fault | Loose or missing connection; ECM is asleep | Cycle the Hybrid Power System by disconnecting Shore Power (if connected) and turning the Coach DC Disconnect Switch to Disconnect. Wait 10 seconds and then turn it back to Connect. |
| 189 | HT Coolant Temperature Cause Unknown | ||
| 189/289 | Communication fault | Loose or missing connection | Cycle the Hybrid Power System by disconnecting Shore Power (if connected) and turning the Coach DC Disconnect Switch to Disconnect. Wait 10 seconds and then turn it back to Connect. |
| 191/291 | Communication fault | Loose or missing connection | Cycle the Hybrid Power System by disconnecting Shore Power (if connected) and turning the Coach DC Disconnect Switch to Disconnect. Wait 10 seconds and then turn it back to Connect. |
| 195 | COOLANT LEVEL OOR HIGH — Warning | A sensor on the radiator has detected that the coolant level is out of range (OOR), high. | |
| 196 | COOLANT LEVEL OOR LOW — Warning | A sensor on the radiator has detected that the coolant level is out of range (OOR), low. | If the generator is powering critical loads and cannot be shut down, wait until the next shutdown period. If the engine can be stopped, allow the engine to cool down completely before proceeding: Look for possible coolant leakage points and repair if necessary; Check coolant level and replenish if low; Reset the control and restart after locating and correcting the problem |
| 197 | LOW COOLANT LEVEL — Lamp: Warning (Optional). Indicates engine coolant level has fallen below the warning trip point. Allow engine to cool down completely before proceeding. | The sensor or harness could be defective. | Check coolant level and replenish if low. Look for possible coolant leakage points and repair if necessary; Reset control and restart after locating and correcting problem. |
| 197/235 | LOW COOLANT LEVEL (WARNING/SHUTDOWN) — No action is taken by the PCC for code 197. Engine will shut down for code 235. | Engine coolant level has dropped below the warning/shutdown threshold for low/high coolant level. The sensor, harness or Base board could be bad. | If the coolant level is normal, isolate the source of the low coolant signal. (This is a ground signal.) Disconnect the signal lead at the sender and reset the control. If the 197/235 message drops out and does not reappear, replace the sender. If the 197/235 message reappears and remains after control reset, remove connector P7 from Base board and check continuity from P7-32 to ground. If there is continuity, replace the harness. If there is not continuity, replace the Base board. |
| 200 | LOW OIL PRESSURE — WARNING | Indicates engine oil pressure has dropped to an unacceptable level. | If generator is powering critical loads and cannot be shut down, wait until next shutdown period then follow 201 Low Oil Pressure procedure. If engine can be stopped, follow 201 procedure. To check oil pressure, access Oil Pressure menu prior to clearing the fault. |
| 201 | LOW OIL PRESSURE — SHUTDOWN | Indicates engine oil pressure has dropped below the shutdown trip point. | Check oil level, lines and filters. If oil system is OK but oil level is low, replenish. Reset control and restart. Oil pressure limits are listed in Specifications. Contact an authorized service center. |
| 202 | PRE-HIGH COOLANT TEMP — Warning | Indicates engine is operating near cooling system capacity. Increase in load or higher ambient temperature may cause High Coolant Temp (code 1) shutdown. | Refer to code 1 |
| 202 | PRE-HIGH COOL TMP — Lamp: Warning; Indicates engine is operating near cooling system capacity. Increase in load or higher ambient temperature may cause High Coolant Temp (1) shutdown | Increase in load or higher ambient temperature | Review fault code 1 correction list for other possible causes |
| 203 | LOW COOLANT TEMP — Warning | Indicates that the engine coolant temperature is below the adjusted setpoint. This may indicate that the coolant heater is not operating or is not circulating coolant. | Coolant heater not connected to power supply. Check for blown fuse or disconnected heater cord and correct as required; Check for low coolant level and replenish if required. Look for possible coolant leaks and repair as required |
| 204 | OIL PRESS SENDER — WARNING | Indicates that the engine oil pressure sender is not functioning correctly. | Check that the engine oil pressure sender is properly connected. Contact an authorized service center. |
| 204 | Customer Input 1 — Warning | The nature of the fault is an optional customer selection. | Each of the fault functions can be programmed (using InPower service tool or access to Setup menu), as follows: Warning or Shutdown (Default = Warning) (See fault code 75 for Shutdown); Change display name using up to 32 characters |
| 204/205 | Configurable Input (Warning) — Warning. | If there is no actual fault, the problem may be an external wiring problem | Disconnect the signal lead from TB1 and reset the control. Check the following pins. CUST_IN1 - TB1-14 CUST_IN2 - TB1-12 If the message drops out, the external wiring has a short circuit. Grounding of either input activates fault |
| 205 | Customer Input 2 — Warning | The nature of the fault is an optional customer selection. | |
| 205 | Service Engine (begin spec B) — Warning | Indicates that emissions criteria might not be met due to one of the following: Engine running in open loop; Lean mixture; Rich mixture; Failed fuel system component | |
| 210 | LOW COOLANT TEMP — WARNING; Set is in standby mode but is not operating. Warning occurs when engine coolant temperature is 70 F (21 C) or lower. NOTE: In applications where the ambient temperature falls below 40 F (4 C), Low Engine Temp may be indicated even though the coolant heaters are operating. | Indicates engine coolant heater is not operating or is not circulating coolant. | Coolant heater not connected to power supply. Check for blown fuse or disconnected heater cord and correct as required; Check for low coolant level and replenish if required. Look for possible coolant leakage points and repair as required; Contact an authorized service center if none of the above. |
| 210 | Low engine temperature warning (210) — "LOW COOLANT TEMP" warning message; coolant level is normal, heater is OK, coolant temp on front panel display is OK, DS3 on the engine interface board A31 is on | DS3/A31 is on, indicating that engine interface board A31 is receiving a low coolant temp from the sender; the sender, the harness or A31 could be bad | Isolate the source of the signal. Unplug the coolant temperature switch (S1) and reset the control. 1. If the 210 warning message drops out and does not reappear, replace the sender. 2. If the 210 warning message reappears and remains after control reset, disconnect A31 J4 and check continuity from P4-13 to GND. If there is continuity, replace the harness. If there is no continuity, replace circuit board A31. |
| 211 | HIGH COOLANT TEMP — WARNING | Indicates engine has begun to overheat and coolant temperature has risen to an unacceptable level: (215 F − standby / 207 F − primary). | If generator is powering non-critical and critical loads and cannot be shut down, use the following: Reduce load if possible by turning off non-critical loads; Check air inlets and outlets and remove any obstructions to airflow. If engine can be stopped, follow the next procedure. To check coolant temperature, access Coolant Temp menu prior to clearing the fault. |
| 211 | High engine temperature warning (211) — "HIGH COOLANT TEMP" warning message; coolant mixture and level is normal, no airflow obstructions, fan belt is OK | Engine problem: coolant pump could be faulty; thermostat could be faulty; there could be an obstruction in the coolant flow; external coolant pump (with remote radiator) could be faulty; external radiator fan motor (with remote radiator) could be faulty | Refer to the engine service manual if there are any physical indications of overheating. |
| 211 | Additional OEM/Vehicle Diagnostic Codes have been logged. | ||
| 212 | HIGH COOLANT TEMP — SHUTDOWN | Indicates engine has overheated (coolant temperature has risen above the shutdown trip point: 223 F − standby / 215 F − primary) or the coolant level is low. | Allow engine to cool down completely before proceeding with the following checks: Check coolant level and replenish if low. Look for coolant leakage and repair if necessary; Check for obstructions to cooling airflow and correct as necessary; Check fan belt and repair or tighten if necessary; Reset control and restart after locating and correcting problem. Contact an authorized service center if none of the above. |
| 212 | Oil temperature sensor | The sensor connections could be bad | Check sender/connectors/wires. |
| 212 | High engine temperature shutdown (212) — "HIGH COOLANT TEMP" shutdown message; coolant mixture and level is normal, no airflow obstructions, fan belt is OK | Engine problem: coolant pump could be faulty; thermostat could be faulty; there could be an obstruction in the coolant flow; external coolant pump (with remote radiator) could be faulty; external radiator fan motor (with remote radiator) could be faulty | Refer to the engine service manual if there are any physical indications of overheating. |
| 212 | COOLANT SENSOR OOR — Warning | Indicates the coolant temperature sensor output is out of range (OOR), high or low. | Check sender/connectors/wires. |
| 213 | ENG COOLANT SENDER — WARNING | Indicates that the resistance of the coolant temperature sender is out of range. | Contact an authorized service center. |
| 213 | The light will display the fault codes (active or inactive) in succession, starting with the most recent. Up to 32 (unacknowledged) fault codes can be stored in control panel memory. | ||
| 213 | Oil temperature sensor | The sensor connections could be bad | Check sender/connectors/wires. |
| 213 | LOW BATTERY — Warning | Indicates battery voltage supply to the control is approaching a low level at which unpredictable operation can occur. | Check the battery charger fuse; Recharge or replace the battery; Clean the battery cable terminals and tighten all connections; Check battery charge voltage float level if applicable (raise float level) |
| 213 | Fault code is indicated by three sets of blinks separated by a two second pause | Use the Warning and Shutdown status indicators to read the fault code. The first set corresponds to the hundreds position, the second to the tens position and the third to the ones digit. | |
| 213 | The Shutdown LED will blink the fault code as follows: blink-blink-pause-blink-pause-blink-blink-blink. The Warning LED will blink once (2 seconds) to indicate the start of a new code. | Press and release the Fault Acknowledge button less than one second to return to the most recent fault code. | |
| 214 | LOW COOLANT LVL — WARNING | Indicates engine coolant level has fallen below the trip point. | Allow engine to cool down completely before proceeding. Check coolant level and replenish if low. Look for possible coolant leakage points and repair if necessary; Reset control and restart after locating and correcting problem. Contact an authorized service center. |
| 214 | High oil temperature | ||
| 214 | HIGH BATTERY — Warning | Indicates battery voltage supply to the control is approaching a high level at which damage to the control can occur. | Check float level on battery charger if applicable (lower float level) |
| 214/215 | Indicates engine coolant level has fallen below the trip point. | Allow engine to cool down completely before proceeding. a. Check coolant level and replenish if low. Look for possible coolant leakage points and repair if necessary. | |
| 215 | LOW COOLANT LVL — SHUTDOWN; LOW COOLANT LVL Shutdown will not occur if generator set is in Idle mode (low coolant warning only). | Indicates engine coolant level has fallen below the trip point. | Allow engine to cool down completely before proceeding. Check coolant level and replenish if low. Look for possible coolant leakage points and repair if necessary; Reset control and restart after locating and correcting problem. Contact an authorized service center. |
| 215 | PRE-LOW OIL PRESSURE — Warning | Indicates that the engine oil pressure is approaching an unacceptable level. | If generator is powering critical loads and cannot be shut down, wait until next shutdown period and then follow fault code 2 procedure |
| 216 | HIGH AC CURRENT — Warning | Indicates that the alternator output current (one or more phases) has exceeded 130% of nominal, or has exceeded 110% of nominal for 60 seconds. | Check load and load lead connections. |
| 217 | OIL PRESS SENSOR OOR — Warning | Indicates the oil pressure sensor output is out of range (OOR), high or low. | Check sender/connectors/wires. |
| 218 | Battle Short Active | ||
| 219 | Eng Oil Level Remote Reservoir: Least Severe Level | ||
| 219 | CHARGER FAILURE — Warning | Indicates the battery charging alternator has not reached a acceptable voltage range within the selected time period (default = 120 seconds). | If the alternator does not support the control's charging alternator logic functionality, this warning can be disabled if the Charger Alt. Enable setting is set to "No" |
| 220 | MAG PICKUP — SHUTDOWN | Indicates mag pickup speed indication is not being sensed or does not match generator set output frequency. | Restart and check RPM on the digital display; Contact an authorized service center. |
| 220 | Fail to Shutdown | ||
| 220 | Shutdown lamp remains lit even though the set continues to run | Overridden shutdown fault occurs when Battle Short mode is enabled | Press ▲, ▼ or ◄ button to acknowledge the fault; fault message is cleared from display but remains in Fault History file |
| 221 | Air pressure sensor high | ||
| 221 | FAIL TO CRANK — SHUTDOWN; Engine will not crank. | Indicates possible fault with control or starting system. | Poor battery cable connections. Clean the battery cable terminals and tighten all connections; Discharged or defective battery. Recharge or replace the battery; Contact an authorized service center for service of starter and starting system. |
| 221 | Shutdown lamp lights. Engine will not crank. | Indicates possible fault with control or starting system. Check for the following conditions: a. Poor battery cable connections. Clean the battery cable terminals and tighten all connections. b. Discharged or defective battery. Recharge or replace the battery. c. Contact an authorized service center for service of starter and start- ing system. | |
| 221 | Engine does not crank—local or remote run — "FAIL TO CRANK" (221) message; Reset and attempt to start: Start LED DS11 on the engine interface board turns on. NOTE: These two indications suggest that the PCC has received a start signal and has sent a start command to the start output (J4-2) on the engine interface board | Emergency Stop switch S13 or the PCC door harness may be bad | Check B+ at A31 J3-2, check continuity from P3-2 to P3-6. If no continuity, repair or replace as necessary |
| 221 | Engine cranks but does not start — "FAIL TO CRANK" (221) message. NOTE: The engine is cranking but shutting down on a 221 fault | The mag pickup signal is not being sensed | Refer to the mag pickup shutdown message (220) |
| 221 | WEAK BATTERY — Warning | Indicates that the genset battery voltage is below battery thresholds during cranking. | See code 213 for corrective action |
| 222 | Air pressure sensor low | ||
| 222 | OVERCRANK — SHUTDOWN; Engine stops cranking. | Indicates possible fuel system problem. | Check for empty fuel tank, fuel leaks, or plugged fuel lines and correct as required; Check for dirty fuel filter and replace if necessary; Check for dirty or plugged air filter and replace if necessary; Reset the control and restart after correcting the problem. Contact an authorized service center if none of the above. |
| 222 | Shutdown lamp lights. Engine stops cranking. | A. Check for empty fuel tank, fuel leaks, or plugged fuel lines and correct as required. b. Check for dirty fuel filter and replace if necessary. c. Check for dirty or plugged air filter and replace if necessary. d. Reset the control and restart after correcting the problem. Contact an authorized service center if none of the above. | |
| 222 | Engine cranks but does not start — "OVERCRANK" (222) message –and While cranking, Run LED DS12 on the engine interface board (A31) is on. NOTE: This suggest that the PCC has sent a run signal to the fuel solenoid | Restricted fuel supply due to: Closed shutoff valve in supply line; Empty propane supply tank; Low natural gas fuel pressure | Open any closed shutoff valve in the fuel line supplying the engine; Fill propane supply tank; Check for proper adjustment of pressure regulator. Check with the gas utility |
| 222 | Annunciator Fault 1 — Warning | The nature of the annunciator fault is an optional customer selection. | |
| 222-224 | Configurable Input (Warning) — Warning. | If there is no actual fault, the problem may be an external wiring problem | Disconnect the signal lead from TB1 and reset the control. Check the following pins. These connections are on the Universal Annuciator. CONF_ANNUC_IN1 - TB1-14 CONF_ANNUC_IN2 - TB1-12 If the message drops out, the external wiring has a short circuit. Grounding of either input activates fault |
| 222-224 | Annunciator Fault 1 − 3 — Warning | The nature of the annunciator fault is an optional customer selection. | |
| 223 | CORS value driver shorted low | ||
| 223 | OVERSPEED — SHUTDOWN; Engine runs and then shuts down. | Indicates engine has exceeded normal operating speed. (2070 rpm @ 60 hz; 1800 rpm @ 50 hz) | Contact an authorized service center. |
| 223 | Shutdown lamp lights. Engine runs and then shuts down. | Indicates engine has exceeded normal operating speed. (2070 rpm @ 60 hz; 1800 rpm @ 50 hz) Contact an authorized service center. | |
| 223 | Oil Burn Valve Sol Low | ||
| 223 | Annunciator Fault 2 — Warning | The nature of the annunciator fault is an optional customer selection. | |
| 223 | Engine Oil Burn Valve Solenoid Circuit - shorted low | ||
| 224 | CORS value driver shorted high | ||
| 224 | FAIL TO SYNCHRONIZE — WARNING; the generator set has not synchronized to the system bus within the allowable time frame | Improper adjustment of bus or generator set voltage | Check the governor system stability, adjust governing and synchronizer parameters as required; check for fuel system problems which can cause engine instability. Synchronizing time can be improved by widening the synchronizing window and reducing the acceptance time delay |
| 224 | Oil Burn Valve Sol High | ||
| 224 | Annunciator Fault 3 — Warning | The nature of the annunciator fault is an optional customer selection. | |
| 225 | ANNUNCIATOR OUTPUT CONFIGURATION ERROR — Warning | Indicates a mismatch in the configuration of one of the annunciator relay outputs. | Check setup of devices on the network against duplicate use of the same Annunciator relay output; Troubleshoot network for malfunctioning devices |
| 225 | Engine Oil Replacement Valve Solenoid Circuit - shorted low | ||
| 226 | FAIL TO CLOSE — SHUTDOWN; indicates that the paralleling breaker has been given a signal to close, but has not closed properly | Check the paralleling breaker for indication that the breaker is tripped and locked out from a signal issued from it’s internal trip unit | Verify that the charging mechanism of the paralleling breaker is functioning properly; check the close signal to the breaker; verify that the auxiliary contact signals from the breaker to the PowerCommand control are operational |
| 226 - 233 | Base I/O Module Input 1 — 8 — Lamp: Warning; The nature of the Base I/O Module fault is an optional customer selection. Example inputs: Low Fuel Day Tank, Water in Fuel, Ground Fault, etc | Each of the fault functions can be programmed (using InPower service tool or access to Setup menu), as follows: Warning, Shutdown or Event (Default = Warning) (See fault code 84–91 for shutdown and code 163–170 for Event); Change display name using up to 32 characters. | |
| 226-233 | Base I/O Module Input 1 − 8 — Warning | The nature of the Base I/O Module “Fault” is an optional customer selection. | Each of the fault functions can be programmed (using InPower service tool or access to Setup menu), as follows: Warning, Shutdown or Event (Default = Warning) (See fault code 84−91 for Shutdown and code 163−170 for Event); Change display name using up to 32 characters |
| 227 | Sensor supply 2 high | ||
| 228 | Low coolant pressure | ||
| 229 | HT Coolant Pressure Incorrect | ||
| 230 | LOW DC VOLTAGE — WARNING | Indicates battery voltage is below 24 VDC. | Discharged or defective battery. Check the battery charger fuse. Recharge or replace the battery; Poor battery cable connections. Clean the battery cable terminals and tighten all connections; Contact an authorized service center if none of the above. |
| 231 | HIGH DC VOLTAGE — WARNING | Indicates battery voltage exceeds 32 VDC. | Contact an authorized service center. |
| 231 | Coolant pressure sensor | ||
| 232 | WEAK BATTERY — WARNING | Indicates battery voltage drops below 60% of nominal for two seconds, during starting. Discharged or defective battery. | See Warning message 230, LOW DC VOLTAGE. |
| 232 | Coolant pressure sensor | ||
| 233 | Coolant pressure warning | ||
| 234 | Overspeed | Fault Code 171 present; Engine reverse powered (motoring of engine / reverse power); Alternate fuel source present; Incorrect rpm reading | Identify the reason for the overspeed; Check for Fault Code 171; Check for motoring of engine (reverse power); Check for alternate fuel source; Check engine rpm with service tool monitor; Clear fault codes; Disable the fault code; Clear the inactive fault codes |
| 234 | Engine Speed High (Shutdown) — Engine speed signals indicate an engine speed greater than the shutdown threshold | Faulty Hall Effect (HE) sensor connections and wiring; Faulty HE sensor; Fault simulation feature is enabled; Incorrect threshold setting; Incorrect settings on the E-controls | |
| 234-237 | AUX I/O MODULE INPUT 9–12 — Lamp: Warning; The nature of the Aux I/O Module fault is an optional customer selection. Example inputs: Low Fuel Day Tank, Water in Fuel, Ground Fault, etc | The nature of the Aux I/O Module “Fault” is an optional customer selection. | Each of the fault functions can be programmed (using InPower service tool or access to Setup menu), as follows: Warning, Shutdown or Event (Default = Warning) (See fault code 92–95 for shutdown and code 171–174 for Event); Change display name using up to 32 characters. |
| 235 | LOW COOLANT LEVEL — Lamp: Shutdown. Indicates engine coolant level has fallen below the shutdown trip point. | Engine coolant level has fallen below the shutdown trip point; the sensor or harness could be bad | See code 197 for corrective action. |
| 235 | Fault Code 235: Blink 1 Blinks 3 Blinks 31 ‘Bcke 5 sBitnks 7 Blink | ||
| 236 | Position sensor | ||
| 236 | Both Engine Speed Signals Lost | ||
| 237 | External Speed Input (Multiple Unit Sychronization) - data incorrect | ||
| 238 | Sensor supply 3 low | ||
| 238 | OIL TEMP HIGH — Lamp: Warning; Indicates engine has begun to overheat (oil temperature has risen to an unacceptable level). Increase in load or higher ambient temperature may cause High Oil Temp (code 96) shutdown. (I/O Module Option.) | Oil temperature has risen to an unacceptable level; possible causes per fault code 1 correction list | Review fault code 1 correction list for possible causes |
| 239 | Main Supply High | ||
| 239 | ESP main supp high — Wrng | ||
| 239 | OIL TEMP OOR — Lamp: Warning; Indicates the oil temperature sensor output is out of range (OOR), high or low. (I/O Module option.) | ||
| 240 | LOW FUEL DAY — WARNING | Indicates day tank fuel supply is running low. | Check fuel supply and replenish as required. |
| 241 | LOW FUEL — WARNING | Indicates fuel supply is running low. | Check fuel supply and replenish as required. |
| 241 | Vehicle Speed Sensor Circuit - data incorrect | ||
| 242 | Vehicle Speed Sensor Circuit - tampering has been detected | ||
| 242 | AMBIENT TEMP HIGH — Lamp: Warning; Indicates the ambient temperature has exceeded the warning threshold for genset room temperature. Increase in load may cause Ambient Temp High (code 98) shutdown. (I/O Module Option.) | Ambient temperature has exceeded the warning threshold for genset room temperature | Check genset room ventilation system (vents/ducts for blockage and dampers/louvers for proper operation) |
| 243 | AMBIENT TEMP OOR — Lamp: Warning; Indicates the ambient temperature sensor output is out of range (OOR), high or low. (I/O Module Option) | ||
| 244 | Red Stop Lamp Driver OOR Low | ||
| 244 | FUEL LEVEL LOW — Lamp: Warning; Indicates that the fuel has dropped below the low fuel level trip point. Allows time to refill before fuel level low (code 99) shutdown occurs. (I/O Module Option) | ||
| 244 | Pe | ||
| 245 | Fan Control Low | ||
| 245 | Fan Clutch Circuit - shorted low | ||
| 245 | FUEL LEVEL OOR — Lamp: Warning; Indicates the fuel level sensor output is out of range (OOR), high or low. (I/O Module Option) | ||
| 246 | Exhaust Gas Temp Sensor 1 OOR High | ||
| 247 | Exhaust Gas Temp Sensor 1 OOR Low | ||
| 248 | Exhaust Gas Temp Sensor 1 High | ||
| 249 | OEM amb air tmp high — Wrng | ||
| 250 | EEPROM ERROR — SHUTDOWN | Indicates PCC memory error. Data corruption of critical operating parameters. | Contact an authorized service center. |
| 251 | EEPROM ERROR — WARNING | Indicates PCC memory error. Data corruption of noncritical operating parameters. | Contact an authorized service center. |
| 251 | Unknown J1939 Fault | ||
| 252 | EEPROM ERROR — WARNING | Indicates PCC memory error. Data corruption of noncritical operating parameters. | Contact an authorized service center. |
| 252 | I/O MODULE LOST — Lamp: Warning; Indicates an intermittent data link between the I/O module and the Base board | Indicates an intermittent data link between the I/O module and the Base board. | |
| 253 | Oil level alarm | Check oil level, lines and filters. If oil system is OK but oil level is low, replenish. Reset control and restart. | |
| 254 | Fuel shutoff valve | ||
| 254 | FSO PWM High Control Error | ||
| 254 | FSO driver failed — Shdtn | ||
| 255 | FSO PWM Low Control Error | ||
| 255 | Fuel Shutoff Valve Circuit - shorted high | ||
| 255 | High FSO voltage — Wrng | ||
| 256 | OEM amb air tmp L — Wrng | ||
| 259 | Fuel shutoff valve | ||
| 260 | CUSTOMER FAULT 1 — SHUTDOWN | When any one of these customer defined inputs is closed to ground, the corresponding fault message is displayed. The nature of the fault is an optional customer selection. These fault functions can be programmed to initiate a shutdown or a warning. As indicated by the Shutdown lamp, a shutdown response has been preselected. | Contact an authorized service center. |
| 260 | RACK POSITION — Warning lamp lights | One or both of the fuel racks is not at the commanded position | A. Check fuel pump connections; b. Check left and right actuator fuses (A38-F1 & F2) on the governor output module |
| 261 | GROUND FAULT — SHUTDOWN | When any one of these customer defined inputs is closed to ground, the corresponding fault message is displayed. The nature of the fault is an optional customer selection. These fault functions can be programmed to initiate a shutdown or a warning. As indicated by the Shutdown lamp, a shutdown response has been preselected. | Contact an authorized service center. |
| 261 | CUSTOMER FAULT (260, 261, 262 or 263) message. And corresponding LED on customer interface board A34 is on. | If the corresponding LED on the customer interface board (A34) is on, then A34 is receiving a signal from the customer circuit. If there is no actual fault, the problem may be a short to ground in the external wiring or a bad customer interface board (A34) | Isolate the source of the false signal. Disconnect the signal lead near the control and reset the control. If the message drops out, there is a short to ground in the external wiring. If the message remains, replace A34. |
| 261 | Fuel temperature sensor | ||
| 261 | H eng fuel temp warn — Wrng | ||
| 261 | Low battery voltage | Clean and tighten battery cable connections at the set and at the battery; Recharge or replace the battery | |
| 262 | RUPTURE BASIN — SHUTDOWN | When any one of these customer defined inputs is closed to ground, the corresponding fault message is displayed. The nature of the fault is an optional customer selection. These fault functions can be programmed to initiate a shutdown or a warning. As indicated by the Shutdown lamp, a shutdown response has been preselected. | Contact an authorized service center. |
| 262 | CUSTOMER FAULT (260, 261, 262 or 263) message. And corresponding LED on customer interface board A34 is on. | If the corresponding LED on the customer interface board (A34) is on, then A34 is receiving a signal from the customer circuit. If there is no actual fault, the problem may be a short to ground in the external wiring or a bad customer interface board (A34) | Isolate the source of the false signal. Disconnect the signal lead near the control and reset the control. If the message drops out, there is a short to ground in the external wiring. If the message remains, replace A34. |
| 262 | CM570/ENGINE — WARNING | Indicates CM570 engine control module error condition | Check CM570 module using InSite service tool |
| 262 | DAY TANK — Shutdown; Shutdown lamp lights | When any one of these customer defined inputs is closed to ground, the corresponding fault message is displayed. The nature of the fault is an optional customer selection. These fault functions can be programmed to initiate a shutdown or a warning. As indicated by the Shutdown lamp, a shutdown response has been preselected. Note: Customer fault messages are editable. The message displayed for the code shown (260 thru 263) may have been edited and may not appear as shown in this table | Fault functions can be programmed to initiate a shutdown or a warning. Note: Customer fault messages are editable; the message displayed for the code shown may have been edited and may not appear as shown in this table |
| 263 | HIGH GEN TEMP — SHUTDOWN | When any one of these customer defined inputs is closed to ground, the corresponding fault message is displayed. The nature of the fault is an optional customer selection. These fault functions can be programmed to initiate a shutdown or a warning. As indicated by the Shutdown lamp, a shutdown response has been preselected. | Contact an authorized service center. |
| 263 | CUSTOMER FAULT (260, 261, 262 or 263) message. And corresponding LED on customer interface board A34 is on. | If the corresponding LED on the customer interface board (A34) is on, then A34 is receiving a signal from the customer circuit. If there is no actual fault, the problem may be a short to ground in the external wiring or a bad customer interface board (A34) | Isolate the source of the false signal. Disconnect the signal lead near the control and reset the control. If the message drops out, there is a short to ground in the external wiring. If the message remains, replace A34. |
| 263 | CM570/ENGINE — SHUTDOWN | Indicates CM570 engine control module error condition | Check CM570 module using InSite service tool |
| 263 | Fuel temperature sensor | ||
| 265 | Fuel temperature sensor | ||
| 266 | Fuel temperature | ||
| 270 | PHASE ROTATION shutdown (270) message | Single phase bus condition | Verify that bus voltage is proper and is not single phased. |
| 271 | High fuel pressure sol 1 low | ||
| 271 | H fuel pressure sol1 L — Wrng | ||
| 272 | High fuel pressure sol 1 high | ||
| 272 | H fuel pressure sol1 H — Wrng | ||
| 277 | Fuel Control Valve Out of Adjustment | ||
| 281 | Fuel pump stuck (mech) | ||
| 281 | Cylinder Press Imbalance | ||
| 284 | Eng Speed/Position Sensor: Voltage Below Normal | ||
| 284 | Engine Speed / Position Sensor #1 (Crankshaft) Supply Voltage Circuit - shorted low | ||
| 285 | J1939 time out error | ||
| 285 | ECM PGN TIMEOUT — Shutdown | Datalink failure. PowerCommand® 2.3 control not responding to the engine control module. | |
| 285 | CAN Mux PGN Rate Error | ||
| 285 | SAE J1939 Multiplexing PGN Timeout Error | ||
| 286 | J1939 config error | ||
| 286 | ECM CONFIGURABLE ERROR — Shutdown | An engine control module configuration error – out of calibration. | |
| 286 | CAN Address Conflict Failure (Warning) — There are two or more devices on the network use the same source address | For the troubleshooting procedure, refer to DTC 1628 in the E-Controls Manual; if another Cummins device is found to have the same slave address, refer to that service manual for that device to change the slave address | |
| 286 | CAN Mux Calibration Error | ||
| 287 | J1939 time out error | ||
| 287 | CAN Mux Accel Data Error | ||
| 287 | SAE J1939 Multiplexing Accelerator Pedal Sensor System Error | ||
| 288 | J1939 time out error | ||
| 288 | SAE J1939 Multiplexing Remote Throttle Data Error | ||
| 292 | Auxiliary Temperature Sensor Input #1 Engine Protection - Critical | ||
| 293 | Auxiliary Temperature Sensor Input #1 Circuit - shorted high | ||
| 294 | Auxiliary Temperature Sensor Input #1 Circuit - shorted low | ||
| 295 | Key On Air Pressure Error | ||
| 295 | Ambient Air Pressure Sensor Circuit - data incorrect | ||
| 296 | Auxiliary Pressure Sensor Input #2 Engine Protection - Critical | ||
| 297 | Auxiliary Pressure Sensor Input #2 Circuit - shorted high | ||
| 298 | Auxiliary Pressure Sensor Input #2 Circuit - shorted low | ||
| 299 | Engine Shutdown Commanded by J1939 | ||
| 301 | HIGH AC VOLTAGE — SHUTDOWN | Indicates that one or more of the phase voltages has exceeded 130% of nominal, or has exceeded 110% of nominal for 10 seconds. | Contact an authorized service center. |
| 302-68 | Open circuit in armature | Install a new armature | |
| 302-102 | Brush rig out of position | Line up properly | |
| 303 | LOW AC VOLTAGE — SHUTDOWN | Indicates that one or more of the phase voltages has dropped below 85% of nominal for 10 seconds. | Contact an authorized service center. |
| 307B40 | Start Solenoid | ||
| 311 | Injector sol 1 H current | ||
| 311 | ACT1 FF Shorted HS TO LS Error | ||
| 311 | Injector Solenoid Valve Cylinder #1 Circuit - grounded circuit | ||
| 312 | Injector sol 5 H current | ||
| 312 | ACT5 Shorted HS TO LS Error | ||
| 312 | Injector Solenoid Valve Cylinder #5 Circuit - grounded circuit | ||
| 312 | Power unit contactor fault | Extremely low voltage due to heavy loads or an open breaker; Harness connection or damage; Defective transfer switch component | Turn the air conditioning thermostat OFF, restart Generator Mode or connect Shore Power, and then turn the thermostat ON again. (This resets the thermostat so that it will start the air conditioners in sequence rather than all at once, greatly reducing the AC transient load on the Hybrid Power System.) |
| 312A17 | Condenser - Battery Positive to Ground | ||
| 312P87 | Feed Thru Condenser (3) | ||
| 313 | Injector sol 3 H current | ||
| 313 | UNDER FREQUENCY — SHUTDOWN | Indicates that engine speed has dropped below 90% of nominal for 10 seconds. NOTE: Five seconds before shutdown, a Load Dump signal is initiated. | Contact an authorized service center. |
| 313 | ACT3 RF Shorted HS TO LS Error | ||
| 313 | Injector Solenoid Valve Cylinder #3 Circuit - grounded circuit | ||
| 313 | Power unit contactor fault | Contactor welded shut due to high current; Defective transfer switch component | Verify that the Power Unit is off, disconnect loads and wait a few minutes. |
| 314 | Injector sol 6 H current | ||
| 314 | ACT6 Shorted HS TO LS Error | ||
| 314 | Injector Solenoid Valve Cylinder #6 Circuit - grounded circuit | ||
| 314 | Shore contactor fault | Extremely low voltage due to heavy load or open breaker; Defective transfer switch component | Verify that the shore power cord is disconnected, disconnect loads and wait a few minutes. |
| 315 | Injector sol 2 H current | ||
| 315 | ACT2 FT Shorted HS TO LS_Error | ||
| 315 | Injector Solenoid Valve Cylinder #2 Circuit - grounded circuit | ||
| 315 | Shore contactor fault | Contactor welded shut due to high current; Defective transfer switch component | Verify that the shore power cord is disconnected, disconnect loads and wait a few minutes. |
| 316 | Fuel supply pump | ||
| 318 | Fuel supply pump | ||
| 319 | Real-Time Clock Backup Battery – Very Low Voltage | The voltage on the internal battery of the PC500/550 has decreased to a point where it will no longer back up the real-time clock of the PC500/550. This can be due to a defective battery or a battery that has been used for a long period of time. | Replace the real time clock battery with 3 VDC battery. |
| 319 | RTC PWR Intr: Data Erratic Intermittent or Wrong | ||
| 319 | Real Time Clock - Power Interrupt | ||
| 320 | OVERCURRENT — WARNING | Indicates that generator output current has exceeded 110% of rated for 60 seconds. | Contact an authorized service center. |
| 321 | Injector sol 4 H current | ||
| 321 | OVERCURRENT — SHUTDOWN | Indicates that generator output current has exceeded 110% of rated, and that a PCC time/current calculation has initiated an overcurrent shutdown. | Contact an authorized service center. |
| 321 | ACT4 RT Shorted HS TO LS Error | ||
| 321 | Injector Solenoid Valve Cylinder #4 Circuit - grounded circuit | ||
| 322 | Injector sol 1 L current | ||
| 322 | SHORT CIRCUIT — SHUTDOWN | Indicates that generator output current has exceeded 175% of rated. | Contact an authorized service center. |
| 322 | Inj 1 Solenoid Low Curr | ||
| 322 | Injector Solenoid Valve Cylinder #1 Circuit - open circuit | ||
| 323 | Injector sol 5 L current | ||
| 323 | Inj 5 Solenoid Low Curr | ||
| 323 | Injector Solenoid Valve Cylinder #5 Circuit - open circuit | ||
| 324 | Injector sol 3 L current | ||
| 324 | Inj 3 Solenoid Low Curr | ||
| 324 | Injector Solenoid Valve Cylinder #3 Circuit - open circuit | ||
| 325 | Injector sol 6 L current | ||
| 325 | Inj 6 Solenoid Low Curr | ||
| 325 | Injector Solenoid Valve Cylinder #6 Circuit - open circuit | ||
| 326 | Oil level warning | If generator is powering critical loads and cannot be shut down, wait until next shutdown period, then follow 688 High Oil Level Alarm procedure. If engine can be stopped follow 688 procedure. | |
| 330 | OVERLOAD — WARNING | Indicates that three-phase power output exceeds 105% of standby (or 115% of prime) rating. After five seconds, the Load Dump output is activated. After 60 seconds, the OVERLOAD warning is activated. | Contact an authorized service center. |
| 331 | Injector sol 2 L current | ||
| 331 | Inj 2 Solenoid Low Curr | ||
| 331 | Injector Solenoid Valve Cylinder #2 Circuit - open circuit | ||
| 332 | Injector sol 4 L current | ||
| 332 | Inj 4 Solenoid Low Curr | ||
| 332 | Injector Solenoid Valve Cylinder #4 Circuit - open circuit | ||
| 332A419 | Terminal Block | ||
| 332A437 | Block Marker Strip | ||
| 334 | Cool tmp sensor error | ||
| 334 | HT Coolant Temperature Incorrect | ||
| 335 | REVERSE POWER — SHUTDOWN | Indicates improper CT or PT phasing. (Non-parallel units only.) | Contact an authorized service center. |
| 335 | Transfer switch processor fault | Transfer Switch EE memory did not download completely; Transfer Switch EE memory failed | Contact an authorized Cummins Onan dealer. |
| 337 | LOSS OF EXCITATION shutdown (337) message | Improper voltage adjustment of the generator set relative to the system bus | Verify that the no load voltage of the generator set matches the bus voltage. Check generator set metering calibration for both generator set and bus readings. If no problems are found, check the paralleling adjustments in the PowerCommand control, to see if they match the default settings in the generator set test report. |
| 337 | Invalid system configuration | The system is not configured correctly | Contact an authorized Cummins Onan dealer. |
| 338 | Knock | ||
| 341 | ECM data lost | ||
| 341 | Engine Control Module Data Lost | ||
| 342 | ECM calibration error | ||
| 342 | Electronic Control Module (ECM) Memory - Area Faults — Engine will shutdown. Common Alarm output is energized. | The ECM has detected a memory check sum error in the memory containing critical engine parameters; power interruption to the ECM or a loss of battery power | Check the equipment battery system (inspect the battery cable connections; check the battery voltage); check the engine harness (inspect the engine harness adaptor cable and ECM connector pins; check for an open circuit in the unswitched battery supply circuit; check for a short circuit from pin to pin in the unswitched battery supply; check the engine harness ground connection; check for an open circuit in the block ground circuit); perform a Controller Reset (partial reset; master reset); clear the fault code |
| 342 | Calibration Code Fail | ||
| 342 | Engine Control Module - Out of Calibration | ||
| 342 | Transfer switch processor fault | Transfer Switch Program memory did not download completely; Transfer Switch Program memory failed | Contact an authorized Cummins Onan dealer. |
| 342 or 346 | Electronic Control Module (ECM) Memory - Area Faults | ||
| 343 | Internal ECM error | ||
| 343 | Hardware Failure Warning | At least one of the following faults is active: Calibration Checksum Warning (Fault Code 2416); EEPROM Write Failure Warning (Fault Code 353); Utility Bus AC Metering Failure (Fault Code 1335); Generator Bus AC Metering Failure (Fault Code 1335); The hardware version is not compatible with the software version | Identify which of the faults is active by observing the fault displayed on the control panel or observing the lamps on the SYNC1320 control board, or by using InPower; Take corrective steps for the active specific faults, as described in this section; Cycle power to the SYNC1320 master synchronizer; If the problem continues, replace the control board |
| 343 | Controller Checksum Error — The checksum of the Flash EPROM does not match the checksum stored in the controller | The checksum of the Flash EPROM does not match the checksum stored in the controller | Reset the control by removing power (including the batteries). If checksum error is repeated on power up, replace the Digital Module. |
| 343 | Transfer switch processor fault | Transfer Switch Data memory did not download completely; Transfer Switch Data memory failed | Contact an authorized Cummins Onan dealer. |
| 346 | Electronic Control Module (ECM) Memory - Area Faults — None on performance. Common Warning output is energized. | The ECM has detected a memory check sum error in the memory containing non-critical engine parameters; power interruption to the ECM or a loss of battery power | Check the equipment battery system (inspect the battery cable connections; check the battery voltage); check the engine harness (inspect the engine harness adaptor cable and ECM connector pins; check for an open circuit in the unswitched battery supply circuit; check for a short circuit from pin to pin in the unswitched battery supply; check the engine harness ground connection; check for an open circuit in the block ground circuit); perform a Controller Reset (partial reset; master reset); clear the fault code |
| 346 | Powerdown Data Lost | ||
| 346 | Engine Control Module - Warning S | ||
| 351 | Bad injector pwr supply | ||
| 351 | Injector Supply Failure | ||
| 352 | Sensor supply 1 low | ||
| 353 | EEPROM Write Failure Warning | The current value in RAM memory (to-be-written value) does not match its post-written value in EEPROM. This problem occurs when you attempt to save a trim by using either InPower or the LCD display and it is not successful. This problem may also occur when the SYNC1320 master synchronizer tries to automatically save data on a periodic basis | Clear the fault either by cycling power to the SYNC1320 master synchronizer or by resetting the processor via an InPower initial calibration |
| 354 | Manifold Absolute Pressure 1 High | ||
| 355 | Manifold Absolute Pressure 1 Low | ||
| 359 | Fail to Start — Engine will not start. | The air cleaner is blocked | Service as necessary |
| 359 | ENGINE FAILED TO START — Indicates possible fault with control or starting system | Poor battery cable connections; Discharged or defective battery | Clean the battery cable terminals and tighten all connections; Recharge or replace the battery |
| 374 | Invalid software | Transfer switch was shipped with functional test software | Contact an authorized Cummins Onan dealer. |
| 378 | Fueling actuator #1 | ||
| 378 | Elect Fuel Inj Cntrl Valve Ckt: Curr Below Normal | ||
| 379 | Fueling actuator #1 | ||
| 379 | OVER CURR — Output Overload | Output current is excessive; Charger control may be failing | Cycle through the Setup menus to try and clear the fault. If the fault returns, the charger control may have failed. |
| 379 | Output Overload | Output current is excessive. Charger control may be failing. | Cycle through the Setup menus to try and clear the fault. If the fault returns, the charger control may have failed. |
| 379 | Elect Fuel Inj Cntrl Valve Ckt: Curr Above Normal | ||
| 379 | Over Current | Charger output current is too high; Output current is excessive. Charger control may be failing | Cycle through the Setup menus to try and clear the fault; If the fault returns, the charger control may have failed; Fault code can only be cleared by: Disconnect the charger harness plug, Cycle completely through the setup menus, Or Recycling the power. |
| 381 | Communication fault | Loose or missing connection | Cycle the Hybrid Power System by disconnecting Shore Power (if connected) and turning the Coach DC Disconnect Switch to Disconnect. Wait 10 seconds and then turn it back to Connect. |
| 382 | Communication fault | Loose or missing connection | Cycle the Hybrid Power System by disconnecting Shore Power (if connected) and turning the Coach DC Disconnect Switch to Disconnect. Wait 10 seconds and then turn it back to Connect. |
| 383 | Communication fault | Loose or missing connection; ECM is asleep | Cycle the Hybrid Power System by disconnecting Shore Power (if connected) and turning the Coach DC Disconnect Switch to Disconnect. Wait 10 seconds and then turn it back to Connect. |
| 385 | Communication fault | Loose or missing connection | Cycle the Hybrid Power System by disconnecting Shore Power (if connected) and turning the Coach DC Disconnect Switch to Disconnect. Wait 10 seconds and then turn it back to Connect. |
| 386 | Sensor supply 1 high | ||
| 386 | Communication fault | Loose or missing connection | Cycle the Hybrid Power System by disconnecting Shore Power (if connected) and turning the Coach DC Disconnect Switch to Disconnect. Wait 10 seconds and then turn it back to Connect. |
| 387 | Communication fault | Loose or missing connection; ECM is asleep | Cycle the Hybrid Power System by disconnecting Shore Power (if connected) and turning the Coach DC Disconnect Switch to Disconnect. Wait 10 seconds and then turn it back to Connect. |
| 387 | Excessive vibration | ||
| 389 | Communication fault | Loose or missing connection | Cycle the Hybrid Power System by disconnecting Shore Power (if connected) and turning the Coach DC Disconnect Switch to Disconnect. Wait 10 seconds and then turn it back to Connect. |
| 391 | Communication fault | Loose or missing connection | Cycle the Hybrid Power System by disconnecting Shore Power (if connected) and turning the Coach DC Disconnect Switch to Disconnect. Wait 10 seconds and then turn it back to Connect. |
| 394 | Fueling actuator #1 | ||
| 394 | Eng Timing Actuator Driver: Curr Below Normal | ||
| 395 | Fueling actuator #1 | ||
| 395 | Eng Timing Actuator Driver: Curr Above Normal | ||
| 396 | Fueling actuator #2 | ||
| 396 | Fuel Cntl Valve Solenoid Driver 2 Sensor Ckt: OC | ||
| 397 | Fueling actuator #2 | ||
| 397 | Fuel Cntl Valve Solenoid Driver 2 - | ||
| 398 | Fueling actuator #2 | ||
| 398 | Eng Timing Actuator Driver 2 Circuit: OC | ||
| 399 | Fueling actuator #2 | ||
| 399 | Eng Timing Actuator Driver 2: Grounded Ckt | ||
| 401 | The generator set does not start. | Possible causes include: low fuel level, faulty starter motor, or a malfunctioning ignition system. | Check the fuel level and refill if necessary. Test the starter motor for functionality. Inspect the ignition system for any issues. |
| 402 | The generator set produces low voltage output. | Possible causes include: dirty or clogged air filter, malfunctioning alternator, or a faulty voltage regulator. | Clean the air filter and check for any blockages. Inspect the alternator for signs of damage or wear. Test the voltage regulator to ensure it is functioning correctly. |
| 403 | The generator set produces high temperature warnings. | Possible causes include: insufficient coolant, malfunctioning thermostat, or a clogged radiator. | Check the coolant level and top up if necessary. Inspect the thermostat for any signs of failure. Clean the radiator to ensure proper airflow. |
| 406 | Complaints of engine surge, stumble, hesitation or hard starting | ||
| 412 | Engine surge | ||
| 412 | Low oil pressure | Low oil level; Open/loose wire connections; Faulty pressure switch; Engine needs service | Add or drain oil as necessary. |
| 412 | J1708 Link Cannot Transmit | ||
| 413 | Excessive high–low charging rates | ||
| 414 | Power unit over crank | Fuel supply; Wiring connections; Faulty starter or solenoid; Faulty external start command | Fill up with fuel as necessary. |
| 414 | J1708 Link Not Fast Enough | ||
| 415 | Low oil pressure alarm | Fault simulation was enabled with InPower | With InPower, verify that the fault simulation is not enabled for the oil pressure sensor; if you do not have InPower, remove battery power from the control to disable fault simulation overrides |
| 415 | Oil Pressure - Engine Protection — Engine will shutdown. Common Alarm output is energized. Low Oil Pressure (LOP) relay driver is energized. | Engine oil pressure has dropped below the alarm (shutdown) threshold for low oil pressure | Verify the sensor accuracy with a mechanical gauge; if sensor reading is not correct, go to Fault Code 141; disable the fault code; clear the inactive fault codes |
| 418 | High H2O in fuel | ||
| 419 | Governor actuator fault | Open/loose wire connections; Faulty actuator | Contact an authorized Cummins Onan dealer. |
| 419 | Intake Manifold Pres Bank Imbalance: Data Erratic | ||
| 420 | Excessive oil carry–over. | ||
| 421 | High oil temperature | The engine oil temperature is above normal and has reached the shutdown trip point. (I/O Module option). | Reduce loads or recirculation of discharge air to generator in elevated ambient. |
| 421 | Oil Temp | Engine has begun to overheat (oil temperature has risen to an unacceptable level) | If generator is powering non-critical and critical loads and cannot be shut down: reduce load if possible by turning off non-critical loads; check air inlets and outlets and remove any obstructions to airflow; if engine can be stopped, follow code 151 procedure and also check engine oil level. |
| 421 | Governor actuator overload fault | Large loads; Fuel supply; Wire connections; Actuator misadjusted; Faulty actuator; Water ingress; Low engine performance | Reduce loads. |
| 422 | Coolant level sen data error | ||
| 423 | Fuel timing | ||
| 424 | Engine temperature sensor fault | Sensor disconnected or broken | Contact an authorized Cummins Onan dealer. |
| 425 | Coolant level sen data error | ||
| 425 | OIL TEMP OOR — Shutdown | The engine oil temperature output is out of range (OOR). High or low. (I/O Module option). | |
| 425 | Power unit over voltage | High engine speed under no load conditions; Governor actuator is not operating correctly | Turn the air conditioning thermostat OFF, restart Generator Mode or connect Shore Power, and then turn the thermostat ON again. (This resets the thermostat so that it will start the air conditioners in sequence rather than all at once, greatly reducing the AC transient load on the Hybrid Power System.) |
| 425 | Oil Temperature Error | ||
| 426 | DATA LINK ERROR — Shutdown | Datalink failure. No communications between the PowerCommand® 2.3 control and the engine control module. | |
| 426 | Power unit under voltage | If there was a large transient load added, the engine speed may not have been able to ramp up in time; Alternator is not operating correctly; Governor actuator is not operating correctly | Reduce loads. |
| 426 | SAE J1939 Datalink - Data Erratic, Intermittent, or Incorrect | ||
| 427 | CAN data link lost messages | Power removed from ECM (keyswitch) during genset operation. O pressed on control during genset operation. (This is a nuisance fault only, not a critical fault.) | Refer to detailed troubleshooting procedure in this section. |
| 427 | CAN Datalink Lost Message | Power removed from ECM (keyswitch) during genset operation (O pressed on control during genset operation); Defective Datalink harness assembly | Reset control by pressing Fault Reset button with O/Manual/Auto switch in O (off) position; Inspect the Datalink harness between P10 and P41 connector pins; Repair or Replace as necessary; Check for resistive circuit in lead P10-1 to P41-N and P10-2 to P41-P (10ohms or less = ok); Check terminating resistors. With connectors P10 and P41 removed, measure resistance between pins P10-1 and P10-2 (60 ohms = ok). |
| 427 | PMA sense lost | Loose/Missing wiring connections; Open/shorted stator winding; Faulty ECM | Contact an authorized Cummins Onan dealer. |
| 428 | H2O in fuel sensor high | ||
| 428 | Water in Fuel Indicator Sensor: Voltage Above Normal | ||
| 429 | H2O in fuel sensor low | ||
| 429 | High battery voltage | Batteries wired wrong; Incorrect Battery type; External Charger | Check battery connections; Verify battery type and confirm that it is set correctly by using the Operator Panel; If an external battery charger is connected, disconnect it to see whether the problem persists. |
| 429 | Water in Fuel Indicator Sensor: Voltage Below Normal | ||
| 431 | Failure to start/stop when switched | ||
| 431 | Engine over speed | Governor actuator misadjusted; Faulty actuator; Speed sense leads have loose or missing connection; Faulty ECM | Fill up with fuel as necessary. |
| 432 | Crankcase breather elements. | ||
| 432 | Starter fault | Faulty starter or starter solenoid; Speed sense leads have loose or missing connections; Batteries; Oil viscosity | Contact an authorized Cummins Onan dealer. |
| 433 | Intake Manifold Press Sensor Ckt: Data Erratic | ||
| 434 | ECM power lost | "Keyswitch" to the ECM was NOT removed for 30 seconds before removing battery power to the ECM (removing connectors or battery cable) | To reset, place the O/Manual/Auto switch in the O position and press E-Stop and wait 30 seconds. Remove E-Stop and press the Fault Reset button. |
| 434 | High Engine Temp — Fault warning appears with the three-digit Warning or Fault Code Number, the time of occurrence of the warning or fault, and a brief description of the warning or fault; the FAULT warning does not time out | Press OK to continue and see Troubleshooting Fault Codes in the Service Manual | |
| 434 | Engine over temperature | Low engine coolant; Too many loads at high ambient temp or elevation; Coolant pump belt; Engine coolant pump; Blockage to air inlet or radiator assembly due to poor installation | Check coolant level; Check the cooling system for leaks; Reduce loads if at high ambient temperatures or elevation. |
| 435 | Oil pressure data error | ||
| 435 | Power unit processor fault | ECM EE memory did not download completely; ECM EE memory failed | Contact an authorized Cummins Onan dealer. |
| 436 | Engine stopped without command from control | Fuel supply; Governor actuator misadjusted; Faulty actuator; Speed sense leads have loose or missing connections; Wirings connections; Faulty engine | Fill up with fuel as necessary. |
| 437 | Exhaust Manifold Gasket Leakage | ||
| 437 | Invalid system configuration | The system is not configured correctly | Contact an authorized Cummins Onan dealer. |
| 441 | Low battery voltage | Weak or discharged battery. | Refer to detailed troubleshooting procedure in this section. |
| 441 | Weak battery detected — Controller has detected a weak battery. Engine may not crank. | Weak battery | Replace battery. |
| 441 | LOW BATT VOLT — Low Battery Voltage | No battery connected | Connect the battery. |
| 442 | High fuel supply pressure | ||
| 442 | HIGH BAT VOLTAGE — Lamp: Warning. Indicates battery voltage supply to the control is approaching a high level at which damage to the control can occur. | Excessive battery charging voltage. | Check float level on battery charger if applicable (lower float level). Check battery wiring/calibration. |
| 442 | HIGH BATTERY — Warning | Battery voltage supply to the control is approaching a high level at which damage to the control can occur. | If the engine can be stopped, allow the engine to cool down completely before proceeding: 1. If there are poor battery cable connections, clean the battery cable terminals and tighten all connections. 2. Check the battery charge float level, if applicable (lower float level). |
| 442 | HIGH BATT VOLT — High Battery Voltage | Charger is set for 12V charging with a 24V battery connected | Attach a 12V battery or set the charger for 24V charging. |
| 442 | Power unit processor fault | ECM Program memory did not download completely; ECM EE memory failed | Contact an authorized Cummins Onan dealer. |
| 443 | Power unit processor fault | ECM Data memory did not download completely; ECM EE memory failed | Contact an authorized Cummins Onan dealer. |
| 449 | High fuel supply pressure | ||
| 449 | Inj Metering 1 Press High | ||
| 451 | Injector metering rail 1 high | ||
| 451 | Fuel rail pressure sensor | ||
| 451 | WARNING (yellow) lamp flashing once followed by STOP (red) lamp flashing the three digit fault code 451 | ||
| 451 | Inj Metering 1 Press High | ||
| 452 | Injector metering rail 1 low | ||
| 452 | Fuel rail pressure sensor | ||
| 452 | Inj Metering 1 Press Low | ||
| 453 | Gas Mass Flow High | ||
| 454 | Gas Mass Flow Low | ||
| 455 | Fuel control valve sensor | ||
| 458 | Spark Timing B Error | ||
| 459 | Inverter cooling system fault | Insufficient cooling (liquid not air flow); Pump is not connected correctly or is faulty | Check the system for coolant leaks and blockages. |
| 459 | Spark Timing A Error | ||
| 461 | Spark Reference B Error | ||
| 462 | Spark Reference A Error | ||
| 467 | Timing rail act sensor | ||
| 468 | Fuel rail actuator sensor | ||
| 471 | Low oil level | If generator is powering critical loads and cannot be shut down, wait until next shutdown period, then follow 253 Oil Level Alarm procedure. If engine can be stopped follow 253 procedure. | |
| 474 | Invalid software | Power unit was shipped with functional test software | Contact an authorized Cummins Onan dealer. |
| 475 | ECM fuse fault (starter fuse) | Blown starter fuse; Starter or starter solenoid wiring | Contact an authorized Cummins Onan dealer. |
| 476 | ECM fuse fault (coolant pump fuse) | Blown coolant pump fuse; Faulty pump wiring | Contact an authorized Cummins Onan dealer. |
| 477 | Network Battery Low — The Network Control Module (NCM) indicates that the network battery voltage is low. | The Network Control Module (NCM) indicates that the network battery voltage is low. | Replace the Network Module batteries.; Press the Reset button on the front panel. |
| 477 | Isolated Battery Voltage Low | ||
| 478 | ECM fuse fault (glow plug fuse) | Blown glow plug fuse; Glow plug wiring | Contact an authorized Cummins Onan dealer. |
| 478 | Isolated Battery Voltage High | ||
| 479 | Power unit fan warning | Open/Loose connection (3 wire); Faulty fan in Power Unit; Faulty ECM | Contact an authorized Cummins Onan dealer. |
| 479 | Exhaust Gas Temperature Data Incorrect | ||
| 481 | Communications fault | Loose or missing connection | Cycle the Hybrid Power System by disconnecting Shore Power (if connected) and turning the Coach DC Disconnect Switch to Disconnect. Wait 10 seconds and then turn it back to Connect. |
| 482 | High fuel supply pressure | ||
| 482 | Communications fault | Loose or missing connection | Cycle the Hybrid Power System by disconnecting Shore Power (if connected) and turning the Coach DC Disconnect Switch to Disconnect. Wait 10 seconds and then turn it back to Connect. |
| 482 | Fuel Press Low: Valid But Below Normal: Mod Severe | ||
| 484 | Communications fault | Loose or missing connection | Cycle the Hybrid Power System by disconnecting Shore Power (if connected) and turning the Coach DC Disconnect Switch to Disconnect. Wait 10 seconds and then turn it back to Connect. |
| 485 | Communications fault | Loose or missing connection | Cycle the Hybrid Power System by disconnecting Shore Power (if connected) and turning the Coach DC Disconnect Switch to Disconnect. Wait 10 seconds and then turn it back to Connect. |
| 486 | Communications fault | Loose or missing connection | Cycle the Hybrid Power System by disconnecting Shore Power (if connected) and turning the Coach DC Disconnect Switch to Disconnect. Wait 10 seconds and then turn it back to Connect. |
| 487 | Either empty warning — Wrng | ||
| 487 | Communications fault | Loose or missing connection; ECM is asleep | Cycle the Hybrid Power System by disconnecting Shore Power (if connected) and turning the Coach DC Disconnect Switch to Disconnect. Wait 10 seconds and then turn it back to Connect. |
| 488 | High intake manifold temp | The intake manifold temperature is above normal and has reached the shutdown trip point. (I/O Module option). Large load or high ambient temperature may be the cause. | Indicates the engine has overheated (intake manifold temperature has risen above the shutdown trip point). Large load or high ambient temperature may be the cause. Review the code 151 correction list for other possible causes. |
| 489 | Communication fault | Loose or missing connection | Cycle the Hybrid Power System by disconnecting Shore Power (if connected) and turning the Coach DC Disconnect Switch to Disconnect. Wait 10 seconds and then turn it back to Connect. |
| 491 | Communication fault | Loose or missing connection | Cycle the Hybrid Power System by disconnecting Shore Power (if connected) and turning the Coach DC Disconnect Switch to Disconnect. Wait 10 seconds and then turn it back to Connect. |
| 496 | Eng Speed Sensor 2 Supply Volt: Root Cause Unknown | ||
| 498 | Oil level sensor | ||
| 499 | Oil level sensor | ||
| 512 | Throttle Position 1 Feedback OOR High | ||
| 513 | Throttle Position 1 Feedback OOR Low | ||
| 514 | Fuel control valve | ||
| 515 | Sensor Supply 6 Circuit OOR High | ||
| 516 | Sensor Supply 6 Circuit OOR Low | ||
| 521 | Low coolant level | Check for low coolant level and add coolant and repair leaks as necessary | |
| 546 | Fuel pressure sensor | ||
| 546 | Fuel pres sens high — Wrng | ||
| 546 | Fuel Delivery Press High | ||
| 547 | Fuel pressure sensor | ||
| 547 | Fuel pres sens low — Wrng | ||
| 547 | Fuel Delivery Press Low | ||
| 551 | Accelerator Pedal Idle Validation Circuit - shorted low | ||
| 553 | High fuel pump pressure | ||
| 553 | Injector Metering Rail #1 Pressure High - Warning Level | ||
| 553 | APC Pressure High | ||
| 554 | Fuel pressure sensor error | ||
| 554 | APC Pressure Error | ||
| 555 | Blowby pressure | ||
| 555 | Engine Blowby - Warning Level | ||
| 555 | Crankcase Pressure High: Above Normal | ||
| 556 | Blowby pressure | ||
| 556 | Crankcase Pressure High | ||
| 557 | Fuel Control Valve 2 OOR High | ||
| 558 | Fuel Control Valve 2 OOR Low | ||
| 559 | Low fuel pump pressure | ||
| 559 | Inj Metering 1 Press Low | ||
| 561 | Heavy Knock Error 1 (A1) | ||
| 562 | Heavy Knock Error 2 (B1) | ||
| 563 | Heavy Knock Error 3 (A2) | ||
| 564 | Heavy Knock Error 4 (B2) | ||
| 565 | Heavy Knock Error 5 (A3) | ||
| 566 | Heavy Knock Error 6 (B3) | ||
| 567 | Heavy Knock Error 7 (A4) | ||
| 568 | Heavy Knock Error 8 (B4) | ||
| 569 | Heavy Knock Error 9 (A5) | ||
| 571 | Knock Cylinder 1 (A1) OOR Low | ||
| 581 | Fuel Supply Pump Inlet Pressure Sensor Circuit - shorted high | ||
| 582 | Fuel Supply Pump Inlet Pressure Sensor Circuit - shorted low | ||
| 583 | Fuel Supply Pump Inlet Pressure Low - warning level | ||
| 586 | Run/Stop switch | ||
| 587 | Run/Stop switch | ||
| 595 | High turbo #1 speed | ||
| 596 | Electrical Charging System Voltage High - warning level | ||
| 597 | Electrical Charging System Voltage Low - warning level | ||
| 597 | Battery Charger Malfunction — The battery charger status signal indicates a fault condition. | The battery charger status signal indicates a fault condition. | Press the Reset button on the front panel.; Check the battery charger fuse(s). Replace, if necessary, with fuses of the correct rating. Fuse current ratings are shown on the charger faceplate.; Refer to the fault definitions following this table. |
| 598 | Electrical Charging System Voltage Low - critical level | ||
| 599 | OEM commanded shtdn | ||
| 611 | ENGINE HOT — Indicates that an engine hot shut down has occurred (cool-down timers were bypassed). This condition will occur when the engine coolant temperature is above the normal operating level and the operator presses the Emergency Switch or moves the 0/Manual/Auto switch to the 0 (Off) position. This type of shutdown should be avoided. Can cause possible loss of performance and engine damage | This condition will occur when the operator presses the Emergency Switch or moves the Off/Manual/Auto switch to the Off (O) position before the generator set completes the cooldown operation | Generator set should run at 10% or less load for three minutes before engine shutdown. This type of shutdown should be avoided; it can cause possible loss of performance and engine damage |
| 612 | High Lubricating Oil Filter Restrication | ||
| 617 | High Turbo Compressor Inlet Temperature LB | ||
| 621 | Low #1 LB Cylinder Power | ||
| 622 | Low #2 LB Cylinder Power | ||
| 623 | Low #3 LB Cylinder Power | ||
| 624 | Low #4 LB Cylinder Power | ||
| 625 | Low #5 LB Cylinder Power | ||
| 626 | Low #6 LB Cylinder Power | ||
| 631 | Low #1 RB Cylindar Power | ||
| 632 | Low #2 RB Cylinder Power | ||
| 633 | Low #3 RB Cylinder Power | ||
| 634 | Low #4 RB Cylinder Power | ||
| 635 | Low #5 RB Cylinder Power | ||
| 636 | Low #6 RB Cylinder Power | ||
| 641 | High #1 LB Cylinder Exhaust Temperature | ||
| 642 | High #2 LB Cylinder Exhaust Temperature | ||
| 643 | High #3 LB Cylinder Exhaust Temperature | ||
| 644 | High #4 LB Cylinder Exhaust Temperature | ||
| 645 | High #5 LB Cylinder Exhaust Temperature | ||
| 646 | High #6 LB Cylinder Exhaust Temperature | ||
| 649 | Change Lubricating Oil and Filter | ||
| 651 | High #1 RB Cylinder Exhaust Temperature | ||
| 652 | High #2 RB Cylinder Exhaust Temperature | ||
| 653 | High #3 RB Cylinder Exhaust Temperature | ||
| 654 | High #4 RB Cylinder Exhaust Temperature | ||
| 655 | High #5 RB Cylinder Exhaust Temperature | ||
| 656 | High #6 RB Cylinder Exhaust Temperature | ||
| 661 | High #1 LB Cylinder Power | ||
| 662 | High #2 LB Cylinder Power | ||
| 663 | High #3 LB Cylinder Power | ||
| 664 | High #4 LB Cylinder Power | ||
| 665 | High #5 LB Cylinder Power | ||
| 666 | High #6 LB Cylinder Power | ||
| 671 | Cylinder #1 LB Exhaust Temperature Sensor Failed Low | ||
| 672 | Cylinder #2 LB Exhaust Temperature Sensor Failed Low | ||
| 673 | Cylinder #3 LB Exhaust Temperature Sensor Failed Low | ||
| 674 | Cylinder #4 LB Exhaust Temperature Sensor Failed Low | ||
| 675 | Cylinder #5 LB Exhaust Temperature Sensor Failed Low | ||
| 676 | Cylinder #6 LB Exhaust Temperature Sensor Failed Low | ||
| 687 | Low turbo 1 speed | ||
| 688 | High oil level alarm | Check oil level. Drain oil to operating level. | |
| 689 | Crankshaft sensor error | ||
| 689 | ENGINE SPEED ERRATIC — Shutdown | A fault condition in the engine crankshaft sensor circuit. | |
| 691 | LBF Turbo Comp Inlet Temperature Sensor Failed High | ||
| 691 | TRB in temp sen high — Wrng | ||
| 692 | LBF Turbo Comp Inlet Temperature Sensor Failed Low | ||
| 692 | TRB in temp sen low — Wrng | ||
| 697 | ECM internal temp sen high | ||
| 698 | ECM internal temp sen low | ||
| 711 | High #1 RB Cylinder Power | ||
| 712 | High #2 RB Cylinder Power | ||
| 713 | High #3 RB Cylinder Power | ||
| 714 | High #4 RB Cylinder Power | ||
| 715 | High #5 RB Cylinder Power | ||
| 716 | High #6 RB Cylinder Power | ||
| 719 | Blowby pressure sensor | ||
| 719 | Crankcase press high — Wrng | ||
| 721 | Cylinder #1 RB Exhaust Temperature Sensor Failed Low | ||
| 722 | Cylinder #2 RB Exhaust Temperature Sensor Failed Low | ||
| 723 | Cylinder #3 RB Exhaust Temperature Sensor Failed Low | ||
| 724 | Cylinder #4 RB Exhaust Tempe | ||
| 729 | Blowby pressure sensor | ||
| 729 | Crankcase press low — Wrng | ||
| 731 | Cam/Crank misalignment | ||
| 757 | Persist data lost — Wrng | ||
| 762 | Real-Time Clock Backup Battery Voltage Above Normal Operating Range | The battery has been replaced with a battery that does not meet the specifications for this application. | Make sure the battery is 3 VDC battery. If not, replace it with a 3 VDC battery. Refer to Chapter 10 on page 107 for the procedure to replace the battery. |
| 763 | Real-Time Clock Backup Battery Voltage Below Normal Operating Range | The battery is running low because of the amount of time in service (battery will normally last for 10 years under normal conditions). | Replace the real-time clock battery with a 3 VDC battery. |
| 778 | Camshaft sensor | ||
| 778 | Camshaft spd err — Wrng | ||
| 781 | CAN DATALINK FAILED — Lamp: Shutdown. Datalink failure. No communications between the Base board and the CM850 engine control module. | Defective Datalink harness assembly. | Refer to detailed troubleshooting procedure in this section. |
| 781 | CAN LINK LOST — Shutdown | Datalink failure. No communications between the PowerCommand® 2.3 control and the engine control module. | |
| 781 | CAN Data Link Failure — Shutdown | Communication between the engine control (ECM) and the PowerCommand® 3.3 control has been severed | Ensure the E-Stop button is not active. Reset the Local/Remote Emergency Stop |
| 781 | CAN DATALINK LOST MESSAGES — Shutdown | Communications lost between control and ECM | Reset control by pressing Fault Reset button with O/Manual/Auto switch in O (Off) position. If "Keyswitch Reset Required" is displayed after clearing fault, repeat control reset sequence |
| 891 | Spark Plug 1 (A1) Root Cause Unknown | ||
| 893 | Spark Plug 3 (A2) Root Cause Unknown | ||
| 894 | Spark Plug 4 (B2) Root Cause Unknown | ||
| 895 | Spark Plug 5 (A3) Root Cause Unknown | ||
| 896 | Spark Plug 6 (B3) Root Cause Unknown | ||
| 897 | Spark Plug 7 (A4) Root Cause Unknown | ||
| 898 | Spark Plug 8 (B4) Root Cause Unknown | ||
| 899 | Spark Plug 9 (A5) Root Cause Unknown | ||
| 911 | Spark Plug 10 (B5) Root Cause Unknown | ||
| 912 | Spark Plug 11 (A6) Root Cause Unknown | ||
| 913 | Spark Plug 12 (B6) Root Cause Unknown | ||
| 914 | Spark Plug 13 (A7) Root Cause Unknown | ||
| 915 | Spark Plug 14 (B7) Root Cause Unknown | ||
| 916 | Spark Plug 15 (A8) Root Cause Unknown | ||
| 917 | Spark Plug 16 (B8) Root Cause Unknown | ||
| 918 | Spark Plug 17 (A9) Root Cause Unknown | ||
| 919 | Spark Plug 18 (B9) Root Cause Unknown | ||
| 951 | Cylinder power imbalance | ||
| 982 | Spark Plug 2 (B1) Root Cause Unknown | ||
| 1113 | ATS Fail to Close: Transfer — A transfer between Source 1 and Neutral failed or the allotted transfer time was exceeded. | A transfer between Source 1 and Neutral failed or the allotted transfer time was exceeded. | Press the Reset button on the front panel.; Refer to the fault definitions following this table.; Refer to Table 5-5. |
| 1113 | Source 2 Available and TDNE indicators ON, Switch remains in Source 1 position | No Transfer signal | Check Transfer Relay: 10 VDC at J12-17 indicates active Transfer signal; Check relay K2, K2 should be momentarily energized; Check cable between Digital Module and Power Module; Check Digital Module Source 2 voltage input to Power Module and Power Module transformer voltage output |
| 1114 | ATS Failed to Close: Retransfer — A transfer between Source 2 and Neutral failed or the allotted retransfer time was exceeded. | A transfer between Source 2 and Neutral failed or the allotted retransfer time was exceeded. | Press the Reset button on the front panel.; Refer to the fault definitions following this table.; Refer to Table 5-6. |
| 1114 | Source 1 Available and TDEN indicators ON, switch remains in Source 2 position | No Retransfer signal | Check Retransfer relay: 10 VDC at J12-4 indicates an active retransfer signal; Check Relay K1, K1 should be momentarily energized; Check cable between Digital Module and Power Module; Check Digital Module and switch; Wait for five seconds to one minute to make sure the motor saver timer is not activated |
| 1117 | ECM power lost | Battery voltage supply to the engine control module was lost. "Keyswitch" to the ECM was NOT removed for 30 seconds before removing battery power to the ECM (removing battery cable). | To reset, place the O/Manual/Auto switch in the O position and press E-Stop and wait 30 seconds. Remove E-Stop and press the Fault Reset button. |
| 1117 | Power Lost With Ignition On | ||
| 1118 | Prelube relay driver | ||
| 1121 | Fail To Disconnect | Event/fault code 1221 is mapped to a configurable output and event/fault code 1453 and event/fault code 2397 are active | Troubleshoot event/fault code 1453 and event/fault code 2397 to resolve this issue; to disable event/fault code 1221 go to Setup > Paralleling Setup > Power Transfer Control > Fail to Disc En on the display and set the "Fail To Disconnect Enable" parameter to Disable, then determine which configurable output is set to activate when event/fault code 1221 is active and go to Setup > Configurable I/O on the display and remove the mapping of event/fault code 1221 to that output |
| 1121 | Failed to Disconnect | ||
| 1122 | Rated/Idle Trans | The generator set is transitioning from rated to idle mode | This event/fault code can be mapped to a configurable customer output relay in order to send external notification via the relay on the base board to users so that proper action can be taken in the time given before the generator set transitions to idle; this fault can be disabled by setting the "Rated to Idle Transition Delay" to 0 seconds; to access the setup menu through the Operator Panel, go to Setup > Genset Setup > Rated to Idle Delay and set appropriately |
| 1123 | Shutdown After Battle Short | A shutdown fault occurred while Battle Short was enabled and Battle Short transitioned from enabled to disabled | Review the Fault History and perform corrective action |
| 1123 | SHUTDOWN AFTER BS — Shutdown | A shutdown fault occurred while the Battle Short mode was enabled. | Review Fault History and perform corrective action. |
| 1123 | Moving the customer installed Battle Short switch to OFF with an active but overridden shutdown fault or a shutdown fault that was overridden at any time. | ||
| 1124 | Delayed shutdown | A shutdown fault | Review Fault History and perform corrective action. |
| 1128 | Mixer Inlet Humidity Sensor: Volt Above Normal | ||
| 1129 | Mixer Inlet Humidity Sensor: Volt Below Normal | ||
| 1131 | Battle Short Active | Battle short function enabled | Indicates that the control is in Battle Short mode - used to bypass several critical fault shutdowns for generator set operation during emergencies. |
| 1131 | Battle Sh Active — Warning status indicator is lit. | Battle Short mode is enabled. | |
| 1132 | Controlled Shutdown | A fault set to Shutdown with Cooldown is active and has put the generator set in a controlled shutdown | Troubleshoot the other shutdown fault(s) that are causing the generator set to shutdown; go to Setup > Genset Setup > Ctrld Shutdown Advance from the Operator Panel in order to appropriately set the Controlled Shutdown Advanced Notice Delay |
| 1139 | UFD Injector 1 Error | ||
| 1141 | UFD Injector 2 Error | ||
| 1142 | UFD Injector 3 Error | ||
| 1143 | UFD Injector 4 Error | ||
| 1144 | UFD Injector 5 Error | ||
| 1145 | UFD Injector 6 Error | ||
| 1213 | Compressor Overboost Error | ||
| 1219 | Utility Breaker Tripped | Overload, short circuit, or ground fault | Check the load of the application, load cables, and the ground fault relay if available; repair if necessary |
| 1221 | Fail to disconnect — Utility CB have failed to open; active if the "Fail To Disconnect Enable" parameter is set to enable, event/fault code 1221 is mapped to a configurable output, and event/fault code 1453 and event/fault code 2397 are active | Event/fault code 1453 and event/fault code 2397 are active | Troubleshoot event/fault code 1453 and event/fault code 2397 to resolve this issue; to disable event/fault code 1221 go to Setup > Paralleling Setup > Power Transfer Control > Fail to Disc En on the display and set the "Fail To Disconnect Enable" parameter to Disable, then determine which configurable output is set to activate when event/fault code 1221 is active and go to Setup > Configurable I/O on the display and remove the mapping of event/fault code 1221 to that output |
| 1222 | Not in Auto Event | The Synchronizing System is not in Auto mode | Make sure you want to work in this mode. If you do not, check relevant terminal blocks (TB10-6) on the SYNC1320 master synchronizer and related switches for misoperation; Check cabling from the switches to the terminal blocks; Make sure the control switch operation is OK; Use InPower to verify that the SYNC1320 master synchronizer is properly processing contact data |
| 1223 | Utility Frequency Warning | The Utility frequency is greater than the upper drop-out threshold or it is less than the lower drop-out threshold and it stays there for a time period that is greater than the drop-out time delay | Check the lower and upper utility frequency drop-out settings on the SYNC1320 master synchronizer. To determine if you are trying to synchronize to a dependable source, create a sensible bandwidth that tells you how good the Utility is. InPower or the set-up tool can be used to accomplish this; To avoid lengthy synchronizing operation, make sure the Utility frequency is not varying a lot all of the time; Make sure the SYNC1320 master synchronizer is measuring frequency correctly |
| 1224 | Generator Bus Overvoltage Warning | The generator bus voltage is greater than the Genset overvoltage drop-out threshold and it stays there for a time period that is greater than the drop-out time delay | Make sure the Genset overvoltage threshold is safe for the connected load and make sure that this value is not too close to the rated voltage; Make sure that the drop-out time delay for this fault is not set too low; Check the AVR system operation of each individual genset; Make sure all AC voltage sensors are properly calibrated at the SYNC1320 master synchronizer and the gensets; Use InPower to monitor and make any necessary adjustments; If used, check external transformer connections |
| 1224 | Genset Overvoltage | ||
| 1224 | Gen over voltage sensor | ||
| 1225 | Generator Bus Undervoltage Warning | The generator bus voltage is less than the Genset undervoltage drop-out threshold and it stays there for a time period that is greater than the drop-out time delay | Make sure the Genset undervoltage threshold is safe for the connected load and make that this value is not too close to the rated voltage; Make sure that the drop-out time delay for this fault is not set too low; Check the AVR system operation of each individual genset; Make sure all AC voltage sensors are properly calibrated at the SYNC1320 master synchronizer and the gensets; Use InPower to monitor and make any necessary adjustments; Make sure the wire size and distance is correct and check for loose connections |
| 1225 | Low Genset Voltage | Genset Low AC Voltage fault | If the Low AC Voltage fault is active on the display, refer to the troubleshooting procedures for Low AC Voltage, fault code 1447 |
| 1225 | Genset Undervoltage | ||
| 1225 | Gen under voltage sensor | ||
| 1226 | Genset Frequency Warning | The generator bus frequency is greater than the upper drop-out threshold or it is less than the lower drop-out threshold and it stays there for a time period that is greater than the drop-out time delay | Verify that the lower and upper generator bus frequency drop-out settings on the SYNC1320 master synchronizer create a sensible bandwidth that makes load-feeding a safe activity. InPower can be used to accomplish this. Be aware that the generator bus settings harmonize with the genset settings; To avoid lengthy synchronizing operation, make sure the Utility frequency is not varying a lot all of the time; Verify that the SYNC1320 master synchronizer is measuring frequency correctly; Verify that the genset control is correctly calibrated |
| 1243 | Engine Derated | A derate condition has been initiated by the engine ECM | Event/fault code 1243 is activated by another active engine fault; determine the fault(s) that caused the engine to derate by checking the operator panel or using InPower or InSite to connect to the ECM; troubleshoot the event/fault(s) and resolve the issue(s) (Reference the Engine Service Manual); after the issue is resolved, press the Reset button on the generator set control to allow the generator set to return to a normal mode of operation; if the issue is not resolved when the Reset button is pressed, the engine will stay in derated mode |
| 1244 | CAN − Engine normal shutdown | The generator set is going through a normal shutdown with cooldown | The generator set is going through a normal shutdown with cooldown and there are no active shutdown faults in the ECM for at least 2 seconds |
| 1244 | CAN - Eng normal shtdn — Shtdn | ||
| 1245 | CAN − Engine shutdown | No B+ at Keyswitch input to CM850 module. | Refer to detailed troubleshooting procedure in this section. |
| 1246 | CAN − Unknown engine fault | The generator set control has received an unknown event/fault code from the ECM | Connect directly to the Engine ECM with InPower or InSite to determine the actual warning or shutdown fault that is generating event/fault code 1246; troubleshoot the fault(s) that are causing the generator set to display event/fault code 1246 (Reference the Engine Service Manual) |
| 1246 | GENERIC ENGINE FAULT — Warning | Engine control fault code not recognized by the PowerCommand® 2.3 control. | |
| 1247 | CAN − Engine unannounced fault | ECM/Engine Fault | Troubleshoot Engine Fault Codes. |
| 1247 | CAN - Eng unannounced flt — Shtdn | ||
| 1248 | CAN - Engine warning condition | An engine warning fault is active | Event/fault code 1248 is activated by another active warning fault in the ECM; connect to the Engine ECM with InPower or InSite to determine the actual warning fault that is generating event/fault code 1248; then troubleshoot the warning fault(s) (Reference the Engine Service Manual) |
| 1256 | Ctrl Mod ID In State Error | ||
| 1257 | Ctrl Mod ID In State Fail | ||
| 1274 | Heavy Knock Error 10 (B5) | ||
| 1275 | Knock Cylinder 10 (B5) OOR Low | ||
| 1276 | Knock Cylinder 10 (B5) OOR High | ||
| 1277 | Knock Cylinder 11 (A6) OOR Low | ||
| 1278 | Knock Cylinder 11 (A6) OOR High | ||
| 1279 | Knock 12 (B6) High | ||
| 1281 | Heavy Knock Error 12 (B6) | ||
| 1282 | Knock Cylinder 12 (B6) OOR Low | ||
| 1283 | Knock Cylinder 12 (B6) OOR High | ||
| 1284 | Knock 13 (B7) High | ||
| 1285 | Continuous Light Knock Error 13 (A7) | ||
| 1286 | Heavy Knock Error 13 (A7) | ||
| 1287 | Knock Cylinder 13 (A7) OOR Low | ||
| 1288 | Knock Cylinder 13 (A7) OOR High | ||
| 1289 | Knock 14 (B7) High Warning | ||
| 1291 | Heavy Knock Error 14 (B7) | ||
| 1292 | Knock Cylinder 14 (B7) OOR Low | ||
| 1293 | Knock Cylinder 14 (B7) OOR High | ||
| 1294 | Knock 15 (A8) High Warning | ||
| 1295 | Continuous Light Knock Error 15 (A8) | ||
| 1296 | Heavy Knock Error 15 (A8) | ||
| 1297 | Knock Cylinder 15 (A8) OOR Low | ||
| 1298 | Knock Cylinder 15 (A8) OOR High | ||
| 1299 | Knock 16 (B8) High Warning | ||
| 1311 | Customer Input #1 - #3 — Status, warning or shutdown | If there is no actual fault, the problem may be an external wiring problem, active input (closed or open) selection is incorrect | Disconnect the signal lead from TB1 and reset the control (CUST_IN1 − TB1-4, CUST_IN2 − TB1-5, CUST_IN3 − TB1-6); if the message drops out, the external wiring has a short or open circuit, or the active input selection (closed/open) is not correct for customer input (use the service tool to check the selection) |
| 1311 | CONFIGURABLE INPUT 1 — Configurable | The nature of the fault is an optional customer selection. Example inputs: Low Fuel Day Tank, Water In Fuel, Ground Fault, etc. | Each of the fault functions can be programmed (using the InPower service tool or by accessing the Setup menu), as follows: 1. Event, Warning, or Shutdown level if Function Select = Fault Input. 2. Change the display name using up to 32 characters. |
| 1311 | Heavy Knock Error 16 (B8) | ||
| 1311 | ENGINE SHUTDOWN — Lamp: Shutdown | The ECM, rather than the PCC, will cause engine shutdown if low oil pressure, high engine temperature, overspeed, or failure to start occurs, and will send a signal to the PCC to display ENGINE SHUTDOWN (Code 1311) | Look up the previous fault in PCC fault history to determine whether engine shutdown is the real cause for generator set shutdown; If the previous fault is ENGINE SHUTDOWN, use the engine fault code enable switch to determine the numerical ECM fault code; For ECM Fault Codes 115 (low oil pressure), 521 (low coolant level) and 123 or 124 (high coolant temperature) follow PCC Code 415, 235 and 151 corrective actions, respectively; All other ECM Fault Codes will require an authorized service representative to correct the fault. Contact an authorized service center for assistance |
| 1311 and 1312 | Customer Input #1 and #2 (Warning or Shutdown) | ||
| 1311 through 1318 | Customer Defined Fault — When any one of these customer defined inputs is detected by the control, the corresponding fault message is displayed. The nature of the fault is an optional customer selection. These fault functions can be programmed to initiate a shutdown or warning as indicated by the Warning or Shutdown lamp. Note: Customer fault messages are editable. The message displayed for the code shown (1311 through 1318) is determined by the customer | ||
| 1311, 1312, 1317, and 1318 | Customer Inputs #1-4 | If there is no actual fault, the problem may be an external wiring problem; active input (closed or open) selection is incorrect | Disconnect the signal lead from TB1 and reset the control. CUST_IN1 – TB1-4; CUST_IN2 – TB1-5; CUST_IN3 – TB1-6; CUST_IN4 – TB1-7; If the fault message clears, the external wiring has a short or open circuit, or the active input selection (closed/open) is not correct for the customer input (use the service tool to check the selection). |
| 1312 | Customer Input #1 - #3 — Status, warning or shutdown | If there is no actual fault, the problem may be an external wiring problem, active input (closed or open) selection is incorrect | Disconnect the signal lead from TB1 and reset the control (CUST_IN1 − TB1-4, CUST_IN2 − TB1-5, CUST_IN3 − TB1-6); if the message drops out, the external wiring has a short or open circuit, or the active input selection (closed/open) is not correct for customer input (use the service tool to check the selection) |
| 1312 | Config Input #2 Fault | Condition for which "Configurable Input #2" is configured for is active | Check the condition for which "Configurable Input #2" has been configured for; ex. if "Configurable Input #2" was configured to become active when the fuel level is low, check the fuel level and add fuel if needed; after the issue is resolved, press the Reset button on the Operator Panel in order to clear the fault, if the fault does not clear go to step 2 |
| 1312, 1317, and 1318 | Configurable Input #2, 13, and 14 — Event | The nature of the fault is an optional customer selection – configurable input #. Example inputs: Low Fuel Day Tank, Water In Fuel, Ground Fault, etc. Each of the fault functions can be programmed using InPower service tool or by accessing the Setup menu | If the engine can be stopped, allow the engine to cool down completely before proceeding: Check the Input # requirements and correct if possible |
| 1313 | Network Fault 1 | The nature of the fault is an optional customer selection. These fault functions can be programmed to initiate a shutdown or warning as indicated by the Warning or Shutdown lamp. Customer fault messages are editable | |
| 1313 - 1316 | NETWORK FAULT 1 thru 4 — Lamp: Warning/Shutdown or none for status message. Indicates network input (#1−#4) is in an active state. | Each of the fault functions can be programmed (using service tool), as follows: Status, Warning or Shutdown; Change display name using up to 19 characters. | |
| 1313-1316 | Network Fault 1 thru 4 | ||
| 1313-1316 | Network Fault 1 through 4 | Indicates network input (#1-#4) is in an active state | Each of the fault functions can be programmed (using the service tool), as follows: Status, Warning, or Shutdown; Change display name, using up to 19 characters |
| 1314 | Network Fault 2 | The nature of the fault is an optional customer selection. These fault functions can be programmed to initiate a shutdown or warning as indicated by the Warning or Shutdown lamp. Customer fault messages are editable | |
| 1315 | Network Fault 3 | The nature of the fault is an optional customer selection. These fault functions can be programmed to initiate a shutdown or warning as indicated by the Warning or Shutdown lamp. Customer fault messages are editable | |
| 1316 | Network Fault 4 | The nature of the fault is an optional customer selection. These fault functions can be programmed to initiate a shutdown or warning as indicated by the Warning or Shutdown lamp. Customer fault messages are editable | |
| 1317 | Customer Input #1 - #3 — Status, warning or shutdown | If there is no actual fault, the problem may be an external wiring problem, active input (closed or open) selection is incorrect | Disconnect the signal lead from TB1 and reset the control (CUST_IN1 − TB1-4, CUST_IN2 − TB1-5, CUST_IN3 − TB1-6); if the message drops out, the external wiring has a short or open circuit, or the active input selection (closed/open) is not correct for customer input (use the service tool to check the selection) |
| 1317 | CONFIGURABLE INPUT 3 — Configurable | The nature of the fault is an optional customer selection. Example inputs: Low Fuel Day Tank, Water In Fuel, Ground Fault, etc. | Each of the fault functions can be programmed (using the InPower service tool or by accessing the Setup menu), as follows: 1. Event, Warning, or Shutdown level if Function Select = Fault Input. 2. Change the display name using up to 32 characters. |
| 1317 | Low Coolant Level (Warning or Shutdown) | Low coolant | Stop the engine and allow the engine to cool down; Visually inspect and verify that the engine coolant is at the appropriate level; If the coolant level is too low, add coolant per specifications |
| 1318 | Service Engine Fault — No action is taken by the PCC. A Service Engine message appears on the control display. | Intermittent fault | Reset the control (this fault must be cleared manually); check for loose connections at the heated exhaust gas oxygen sensor and at the fuel trim valve (air fuel control) |
| 1318 | Customer input #4 | The nature of the fault is an optional customer selection; example inputs: Low Fuel Day Tank, Water In Fuel, Ground Fault, Low Starting Hydraulic Pressure, Low Starting Air Pressure, etc. | Program using service tool: enable/disable input (Default: enable); Status, Warning or Shutdown (Default: #1−None, #2 thru #4−Warning); Active closed or open (Default: closed [ground]); change display name using up to 19 characters (Default: #1− Customer Fault 1, #2−Ground Fault, #3−Low Fuel, #4−Rupture Basin Fault). |
| 1318 | CONFIGURABLE INPUT 4 — Configurable | The nature of the fault is an optional generator set input. Example inputs: Low Fuel Day Tank, Water In Fuel, Ground Fault, etc. | Each of the fault functions can be programmed (using the InPower service tool or by accessing the Setup menu), as follows: 1. Event, Warning, or Shutdown level if Function Select = Fault Input. 2. Change the display name using up to 32 characters. |
| 1318 | Low Fuel (Warning or Shutdown) — This fault is used when an optional low fuel level switch is installed | Low fuel pressure | Measure the fuel pressure at the fuel pump inlet |
| 1319 | High alternator temp | ||
| 1321 | Common warning driver | ||
| 1322 | Load gov kW setpoint oor hi | ||
| 1323 | Load gov kW setpoint oor lo | ||
| 1324 | Load gov kVAR oor hi | ||
| 1324 | KVAR Load Setpoint OOR High | ||
| 1325 | Load gov kVAR oor lo | ||
| 1325 | KVAR Load Setpoint OOR Low | ||
| 1326 | Backup starter disconnect | ||
| 1327 | Load gov kW analog oor | ||
| 1328 | Genset CB tripped | ||
| 1329 | AVR DC power failure | ||
| 1331 | AVR driver shorted | ||
| 1332 | Manual switch oor lo | ||
| 1333 | Manual switch oor hi | ||
| 1334 | CRIT SCALER OR — Lamp: Shutdown. Incorrect feature or calibration was entered into control. | An incorrect feature or calibration was entered into the control | An incorrect feature or calibration was entered into the control. |
| 1334 | Critical scaler oor | ||
| 1335 | NONCRIT SCALER OR — Lamp: Warning. Incorrect feature or calibration was entered into control. | ||
| 1335 | Non-Crit Scaler OR | An incorrect feature or calibration was entered into the control | An incorrect feature or calibration was entered into the control. |
| 1335 | Non critical scaler oor | ||
| 1335 | AC Metering Out of Range Warning | At least one of the following variables are out of range in utility bus and/or generator bus analog measurements: Voltage; Current; kW; kVAR; kVA; Power Factor | Use Inpower to determine if the generator bus or the utility bus is the source of the problem; Verify that the meter calibration is okay; Verify that the SYNC1320 master synchronizer VT and CT ratios are correctly set; Verify that the VT and CT rated values match the ones set in the SYNC1320 master synchronizer; Check the number of turns on each of the built-in CTs to verify that they comply with requirements regarding 5A-secondary and 1A-secondary; Verify that the CT and VT polarities and connections are okay |
| 1336 | Cooldown complete | ||
| 1337 | Network wink | ||
| 1338 | Knock Cylinder 18 (B9) OOR Low | ||
| 1339 | Knock Cylinder 18 (B9) OOR High | ||
| 1341 | Load demand stop | ||
| 1342 | Slot 0 card | ||
| 1343 | Slot 1 card | ||
| 1344 | Slot 2 card | ||
| 1345 | Slot 3 card | ||
| 1346 | Slot 4 incorrect | ||
| 1347 | Slot 5 card | ||
| 1348 | Slot 6 card | ||
| 1349 | Slot 7 card | ||
| 1351 | Slot 4 / network enabled | ||
| 1352 | Knock 20 (B10) High Warning | ||
| 1353 | Continuous Light Knock Error 20 (B10) | ||
| 1354 | Heavy Knock Error 20 (B10) | ||
| 1355 | Knock Cylinder 20 (B10) OOR Low | ||
| 1356 | Knock Cylinder 20 (B10) OOR High | ||
| 1357 | Oil Remote Level Low | ||
| 1362 | Oil Filter Restriction Error | ||
| 1363 | Intake Manf 1 Press Low | ||
| 1367 | High Prefilter Oil Press | ||
| 1368 | Low Prefilter Oil Press | ||
| 1369 | AUX Temperature 1 Sensor OOR High | ||
| 1373 | Start Enable Device 1: Cause Unknown | ||
| 1376 | Camshaft Speed Error | ||
| 1377 | Post Oil Filter Pressure OOR High | ||
| 1378 | Post Oil Filter Pressure OOR Low | ||
| 1383 | Intake Manifold 1 Pressure OOR High | ||
| 1384 | Intake Manifold 1 Pressure OOR Low | ||
| 1385 | Intake Manifold 2 Pressure OOR High | ||
| 1386 | Intake Manifold 2 Pressure OOR Low | ||
| 1411 | Speed bias analog i/p signal is shorted high. — No effect on engine performance. | Check OEM harness for short circuit ie. +5V or +24V battery supply. If short, replace the harness. | |
| 1411 | High Out Freq Adjust Pot | ||
| 1411 | Gen freq adj high — Wrng | ||
| 1412 | High Droop Adjust Pot | ||
| 1414 | Run relay contact | ||
| 1415 | Run relay driver | ||
| 1416 | Fail to Shutdown | A shutdown fault was bypassed while the Battle Short feature was enabled on the power command controller | The Fault Acknowledgement/Reset button will clear the fault message, but will remain in the Fault/History file with an asterisk sign (* equals active fault) as long as Battle Short mode is enabled. |
| 1416 | Engine fails to shutdown — Engine fails to stop even though it receives a stop command. No engine protection feature. | If FSO valve is permanently ON even if Switch is in OFF position, check the harness for +24V short to battery supply. If short is observed, replace the harness; Check and be sure that the manual override screw on FSO valve is out to maximum travel; Check that the FSO is turned off when 24V from PowerCom is removed by turning the key switch from Run position to Off position; Check engine fuel drain line. | |
| 1416 | Failt to Shutdown | ||
| 1416 | Shutdown fault is announced but the genset does not shut down | ||
| 1417 | POWER DOWN ERROR — Lamp: Warning. Indicates that the controller can not power down because of some unknown condition. Possible drain on battery. | Possibility of the base board fault | Replace Base board. |
| 1417 | Powr Down Error | Controller can not power down because of some unknown condition; possible drain on battery | Contact an authorized service center for service. |
| 1417 | Pwr Down Error | ||
| 1418 | High Gain Adjust Pot | ||
| 1419 | Fuel rail driver | ||
| 1421 | Timing rail driver #1 | ||
| 1422 | Timing rail driver #2 | ||
| 1424 | High side driver | ||
| 1427 | Overspeed relay driver | ||
| 1428 | LOP shutdown relay driver | ||
| 1429 | HET Relay Error | ||
| 1431 | Pre-LOP Relay Error | ||
| 1432 | Pre-HET Relay Error | ||
| 1433 | EMERGENCY STOP — Lamp: Shutdown. Indicates local Emergency Stop. | A local Emergency Stop | To reset the local/remote Emergency Stop button: Pull the Emergency Stop button out; Move the O/Manual/Auto switch to O; Press the front panel Fault Acknowledge/Reset button; Return O/Manual/Auto switch to desired position. |
| 1433 | Local E-Stop — The state of the Local Emergency Stop (E-Stop) has been changed | The local E-Stop button has been activated | Reset the Local E-Stop: pull the Local E-Stop button out; press the Off button; press the Reset button; select Manual or Auto as required |
| 1433 / 1434 | EMERGENCY STOP − LOCAL / EMERGENCY STOP − REMOTE — Indicates local or remote Emergency Stop. Emergency Stop shutdown status can be reset only at the local control panel | Local or remote Emergency Stop | Pull the button out; Move the O/Manual/Auto switch to O (Off); Press the front panel Fault Acknowledge button; Select Manual or Auto, as required |
| 1433/1434 | Local Emergency Stop/Remote Emergency Stop — Shutdown | A local or remote Emergency Stop has been activated | Emergency Stop shutdown status can be reset only at the local control panel. Allow the engine to cool down completely before proceeding with the following checks: After locating and correcting problem, reset the local/remote Emergency Stop button as follows: De-activate (disable) the Emergency Stop button; Press the Stop button; Press the Reset button; Select the desired operating mode (manual or auto); Check the Emergency Stop button is working correctly |
| 1434 | REMOTE E-STOP — Lamp: Shutdown. Indicates remote Emergency Stop. | The Remote Emergency stop button has been activated; faulty connection or faulty emergency stop switch | See code 1433 to reset. |
| 1434 | Emergency stop — remote | ||
| 1435 | Low Coolant Temperature — No action is taken by the PCC. The engine may not start due to slow cranking speed. | Fault simulation was enabled with InPower | With InPower, verify that the fault simulation is not enabled for the coolant sensor; if you do not have InPower, remove battery power from the control to disable fault simulation overrides |
| 1435 | Engine cold | ||
| 1436 | PT fuel system drivers | ||
| 1437 | E-stop path fuse blown | ||
| 1437 | FAULT HISTORY: 1 OF 24 | ||
| 1438 | FAIL TO CRANK — Lamp: Shutdown. Indicates possible fault with control, speed sensing or starting system. | Starter is bad. | Refer to detailed troubleshooting procedure in this section. |
| 1438 | Engine fails to crank — No effect on engine performance. | Tighten the battery connections if they are loose; Check electrolyte levels and specific gravity of battery cells. If low, charge or replace the battery; If battery rating is low, replace the battery with correct rating; If engine starting circuit is malfunctioning, check if 24V supply appears at the starter magnetic switch during start. If +24V battery supply does not appear, check for engine harness continuity; Check for continuity: Check the continuity between Pin ‘E’ of Connector ‘A’ and starter magnetic switch connections. If no continuity is observed, repair the wires or replace the engine harness. If continuity is observed, and problem still persists, replace the controller; If engine drive unit does not get engaged with the starter, then check whether the starter solenoid gets supply voltage. If not, change the starter magnetic switch; Remove engine starting motor & check for damage; If there is hydraulic lock in engine cylinder, then check intake or exhaust valve operation. | |
| 1439 | FUEL LEVEL LOW IN DAY — Indicates fuel supply is running low | Check fuel supply and replenish as required | |
| 1439 | Low Day Tank Fuel Switch | The day tank fuel supply is running low; Possible fuel leaks; Low fuel level | Look for possible fuel leaks and repair as required; Check for low fuel level and replenish if required |
| 1441 | FUEL LEVEL LOW IN MAIN — Indicates fuel supply is running low | The fuel level has gone below the threshold setting for the low fuel level against the time setting; Possible fuel leaks; Low fuel level | Check fuel supply and replenish as required |
| 1442 | WEAK BATTERY — Lamp: Warning. Indicates that during cranking, the battery voltage is at or below the weak battery warning trip point for a time greater than or equal to the weak battery set time. | Weak or discharged battery. | See code 441 for corrective action. |
| 1443 | BATTERY FAILED — Lamp: Shutdown. Dead battery − engine will not start. | Refer to code 1438. | See code 441 for corrective action. |
| 1443 | BATTERY IS DEAD — Indicates battery has dropped below genset operating range (3.5 volts when cranking) to power the starter and the control circuitry | During cranking, the battery voltage has dropped below the operating voltage of the PowerCommand® 3.3 control, which resets the PowerCommand® 3.3 control; After three consecutive resets, event/fault code 1443 becomes active | See Warning message 441 Low Battery Voltage |
| 1444 | KW OVERLOAD — Lamp: Warning. Indicates that generator output power exceeded 105% of genset rating. | Fault threshold is not set correctly with InPower. | Check load and load lead connections. |
| 1445 | SHORT CIRCUIT — Lamp: Shutdown. Indicates that generator output current has exceeded 175% of rated. | Refer to code 1444. | Check load and load lead connections. (Fault may not reset for several minutes.) |
| 1446 | HIGH AC VOLTAGE — Lamp: Shutdown. Indicates that one or more of the phase voltages has exceeded 130% of nominal, or has exceeded 110% of nominal for 10 seconds. | Fault simulation was enabled with InPower. | Refer to detailed troubleshooting procedure in this section. |
| 1446 | Over voltage fault | Check for AVR function; Verify proper alternator connections; Verify that PowerCom control voltage selection matches alternator winding voltage selection; Isolate the power output from the generator set by opening the generator main circuit breaker; Check voltage on the output terminals. If incorrect voltage is displayed, troubleshoot voltage sensing harness & circuitry; If correct voltage is displayed, but it is very high, verify that the generator set can operate at proper voltage when exciter is powered from a suitable external source; If voltage is unbalanced, troubleshoot main stator; If voltage is balanced but abnormal, troubleshoot exciter & main field windings. | |
| 1447 | LOW AC VOLTAGE — Lamp: Shutdown. Indicates that one or more of the phase voltages has dropped below 85% of nominal for 10 seconds. | Fault simulation was enabled with InPower. | Refer to detailed troubleshooting procedure in this section. |
| 1447 | Undervoltage shutdown | Check the load & correct for any overload; Check operation by disconnecting the load & restarting the genset; Verify proper alternator connections; Verify that PowerCom control voltage selection matches alternator winding voltage selection; Isolate the power output from the generator set by opening the generator main circuit breaker; Check voltage on the output terminals. If incorrect voltage is displayed, troubleshoot voltage sensing harness & circuitry; If correct voltage is displayed, but it is very high, verify that the generator set can operate at proper voltage when exciter is powered from a suitable external source; If voltage is unbalanced, troubleshoot main stator; If voltage is balanced but abnormal, troubleshoot exciter & main field windings. | |
| 1448 | UNDER FREQUENCY — Lamp: Shutdown. Indicates that engine speed has dropped below 90% of nominal for 10 seconds. | Fault simulation was enabled with InPower. | Check fuel supply, intake air supply and load. |
| 1448 | AC output frequency low | ||
| 1448 | Over frequency shutdown | Reset the threshold to the lowest allowable setting; Check for fuel or air delivery problem. | |
| 1449 | OVER FREQUENCY — Lamp: Warning. Indicates frequency is 10% above base frequency for 20 seconds. | Fault simulation was enabled with InPower. | Refer to detailed troubleshooting procedure in this section. |
| 1449 | AC output frequency high | ||
| 1449 | Under frequency shutdown | Check the load & correct for any overload; Check operation by disconnecting the load & restarting the genset; Reset the threshold to the lowest allowable setting; Check for fuel or air delivery problem. | |
| 1449 | Overfrequency | ||
| 1451 | Gen/Bus voltage differ | ||
| 1451 | Genset/Bus V Mismatch | ||
| 1452 | Gen CB failed to close | Refer to Section 6. | |
| 1452 | Genset Breaker Fail To Close | ||
| 1453 | Gen CB failed to open | Refer to Section 6. | |
| 1453 | Genset Breaker Fail To Open | ||
| 1454 | Gen CB position contact | ||
| 1454 | Genset Breaker Position Contact | ||
| 1454 | Genset CB Pos Error | ||
| 1455 | Util CB contact | ||
| 1455 | Utility Breaker Position Contact | ||
| 1455 | Utility CB Pos Error | ||
| 1456 | Bus out of range | ||
| 1456 | Synchronizer Output Limit Warning | The synchronizer fails to achieve a match point when it puts the voltage and/or frequency at their extreme values (lowest, highest) of the allowed bandwidth for a time period that is greater than the fail-to-synchronize time period. If: Frequency match is at the high or low limit, or Voltage match is at the high or low limit, or Voltage match has failed, Then a synchronizer output warning is initiated | Verify that the Failure to Synchronize time is not too low; Verify that the Permissive Phase Window is not too tight; Verify that the Permissive Voltage Window is not too tight; Check to see that the Permissive Window time is not too high |
| 1457 | Fail to synchronize | This warning is displayed when the synchronizer is ON AND Permissive Close is Not Allowed. Permissive Close Not Allowed is true continuously for a Failure to Synchronize time period | Verify that the voltage bias and frequency bias signals to the gensets are arriving at the correct terminals; Verify that the SYNC1320 master synchronizer is sending bias signals to the gensets; Check the speed-governing system of each genset; Check the fuel quality; Make sure that all SYNC1320 master synchronizer and genset meters are properly calibrated |
| 1458 | Phase rotation | This warning is displayed when the synchronizer is ON AND the Utility Phase Rotation is different from the Genset Phase Rotation and this status is true continuously for a Fail-to-Synchronize time period | Use InPower to observe data processing on the SYNC1320 master synchronizer; Verify that Genset and Utility input voltage lines to the SYNC1320 master synchronizer match the ones shown on the terminal block as to Phase Rotation and line-to-line match; Make sure the Genset and Utility power lines are properly connected to relevant breakers. Improper connections can result in a catastrophic breaker closure; Check the Genset and Utility VT connections and polarities, if used |
| 1458 | Sync Ph Rot Mismatch | ||
| 1459 | REVERSE POWER — Lamp: Shutdown. Indicates improper CT phasing. | Check wiring to voltage sense circuit. Refer to CT Installation in Section 5. | |
| 1459 | Reverse kW | ||
| 1461 | LOSS OF FIELD — Lamp: Shutdown. Indicates loss of field (electric) due to reverse kVAR. | Loss of field (electric) due to reverse kVAR | Indicates loss of field (electric) due to reverse kVAR. |
| 1462 | High ground current | ||
| 1463 | Not in Auto | ||
| 1464 | Load dump | ||
| 1465 | Ready to load | ||
| 1466 | MODEM FAILURE — Lamp: Warning. Indicates that control can not communicate with the modem. | The control can not communicate with the modem | Check for open, short circuit to ground, and loose connections to the modem. |
| 1467 | Unable to connect modem | ||
| 1468 | NETWORK ERROR — Lamp: Warning. Indicates momentary loss of communication from the LonWorks Network. | A momentary loss of communication from the LonWorks network | Refer to the LonWorks Network publications for more specific troubleshooting methods. |
| 1469 | SPEED/HZ MATCH — Lamp: Shutdown. Indicates that measured speed and measured AC output frequency do not agree. | Measured speed and measured AC output frequency do not agree | Check calibration file. |
| 1471 | OVER CURRENT — Lamp: Warning. Indicates that generator output current has exceeded 110% of rated for 60 seconds. | Refer to code 1444 | Check load and load lead connections. |
| 1471 | High current | Overload | Reference the first 2 steps of event/fault code 1444 |
| 1471 | Overcurrent warning | Check load & load cables. Repair if necessary; Check operation by disconnecting load & restarting generator set; Check CT ratio & CT connections. | |
| 1471/1472 | Over current (Warning/Shutdown) — No action is taken by the PCC for code 1471. Engine will shut down for code 1472. | Refer to code 1444. | Refer to code 1444. |
| 1472 | OVER CURRENT — Lamp: Shutdown. Indicates that generator output current has exceeded 110% of rated, and that a control time/current calculation has initiated an overcurrent shutdown. | Generator output current has exceeded 110% of rated, and a control time/current calculation has initiated an overcurrent shutdown | Check load and load lead connections. (Fault may not reset for several minutes.) |
| 1472 | Overcurrent | ||
| 1472 | High Current Shutdown | Short or overload | Check the load and load cables; repair if necessary |
| 1473 | Watchdog failure | ||
| 1474 | Software version mismatch | ||
| 1475 | First start backup | Wiring issue at the First Start Arbitration input | The First Start Arbitration input is incorrectly wired between generator sets or an open circuit exists at the First Start Arbitration input; check the wiring at TB3-11 (First Start Arbitration) and TB3-12 (Return) between this and all generator sets that are interconnected, and ensure that the wiring is correct |
| 1476 | LonWorks card | ||
| 1477 | Crank relay contact | ||
| 1477 | Over Current | ||
| 1478 | Crank relay driver | ||
| 1481 | AVR driver open | ||
| 1483 | Common alarm status | This warning is active whenever any other warning fault state is active | Search for the active warning and follow the appropriate relevant troubleshooting procedures elsewhere in this document |
| 1485 | EFC driver shorted | ||
| 1486 | EFC driver open | ||
| 1487 | Auto acknowledge driver | ||
| 1488 | Warning LED driver | ||
| 1489 | Shutdown LED driver | ||
| 1491 | Ready to load relay driver | ||
| 1492 | Load dump relay driver | ||
| 1493 | Display control driver | ||
| 1494 | Modem power relay driver | ||
| 1495 | Common shutdown2 driver | ||
| 1496 | Auto mode relay driver | ||
| 1497 | Manual run LED driver | ||
| 1498 | Exercise run LED driver | ||
| 1499 | Remote start LED driver | ||
| 1517 | Failed Module Shutdown | ||
| 1518 | Failed Module Warning | ||
| 1519 | At Least One Module Has: Least Severe Fault | ||
| 1521 | Exhaust Gas Temperature 3 (A2) OOR High | ||
| 1522 | Exhaust Gas Temperature 5 (A3) OOR High | ||
| 1523 | Exhaust Gas Temperature 7 (A4) OOR High | ||
| 1524 | Exhaust Gas Temperature 9 (A5) OOR High | ||
| 1525 | Exhaust Gas Temperature 11 (A6) OOR High | ||
| 1526 | Exhaust Gas Temperature 13 (A7) OOR High | ||
| 1527 | Exhaust Gas Temperature 15 (A8) OOR High | ||
| 1528 | Exhaust Gas Temperature 17 (A9) OOR High | ||
| 1529 | Exhaust Gas Temperature 2 (B1) OOR High | ||
| 1531 | Exhaust Gas Temperature 6 (B3) OOR High | ||
| 1532 | Exhaust Gas Temperature 8 (B4) OOR High | ||
| 1533 | Exhaust Gas Temperature 10 (B5) OOR High | ||
| 1534 | Exhaust Gas Temperature 12 (B6) OOR High | ||
| 1535 | Exhaust Gas Temperature 14 (B7) OOR High | ||
| 1536 | Exhaust Gas Temperature 16 (B8) OOR High | ||
| 1537 | Exhaust Gas Temperature 18 (B9) OOR High | ||
| 1540 | Common Warning | Active warning fault | This fault is activated as a result of another warning fault; troubleshoot the other warning fault(s) that are causing the generator set to generate a warning fault |
| 1541 | Common Shutdown | Active shutdown fault | This fault is activated as a result of another shutdown fault; troubleshoot the other shutdown fault(s) that are causing the generator set to shut down |
| 1545 | EPS Backup Channel Lost | ||
| 1546 | EPS Main Channel Lost | ||
| 1548 | Inj 7 Solenoid Low Curr | ||
| 1549 | Inj 8 Solenoid Low Curr | ||
| 1551 | Inj 7 Solenoid Low Curr | ||
| 1552 | Inj 7 Solenoid Low Curr | ||
| 1553 | Inj 7 Solenoid Low Curr | ||
| 1554 | Inj 7 Solenoid Low Curr | ||
| 1555 | Inj 7 Solenoid Low Curr | ||
| 1556 | Inj 7 Solenoid Low Curr | ||
| 1557 | Inj 7 Solenoid Low Curr | ||
| 1572 | Continuous Light Knock Error 19 (A10) | ||
| 1573 | Configurable Input #1 | ||
| 1574 | Heavy Knock Error 19 (A10) | ||
| 1575 | Knock Cylinder 19 (A10) OOR Low | ||
| 1576 | Knock Cylinder 19 (A10) OOR High | ||
| 1579 | Continuous Light Knock Error 12 (B6) | ||
| 1581 | Continuous Light Knock Error 14 (B7) | ||
| 1582 | Continuous Light Knock Error 16 (B8) | ||
| 1583 | Heavy Knock Error 16 (B8) | ||
| 1584 | Knock Cylinder 16 (B8) OOR Low | ||
| 1585 | Knock Cylinder 16 (B8) OOR High | ||
| 1586 | Knock 17 (A9) High Warning | ||
| 1587 | Continuous Light Knock Error 17 (A9) | ||
| 1588 | Heavy Knock Error 17 (A9) | ||
| 1589 | Knock Cylinder 17 (A9) OOR Low | ||
| 1591 | Knock Cylinder 17 (A9) OOR High | ||
| 1592 | Knock 18 (B9) High Warning | ||
| 1593 | Continuous Light Knock Error 18 (B9) | ||
| 1594 | Knock 19 (A10) High Warning | ||
| 1596 | Aux Temperature 1 Sensor OOR Low | ||
| 1597 | ECM Device/Component | ||
| 1618 | Exhaust Gas Temperature, Cylinder 1 (A1) OOR High | ||
| 1619 | Exhaust Gas Temperature, Cylinder 4 (B2) OOR High | ||
| 1622 | Inj 9 Solenoid Low Curr | ||
| 1636 | Intake Manifold Pressure 2 OOR High | ||
| 1637 | Intake Manifold Pressure 2 OOR Low | ||
| 1664 | Exhaust After Oxidation Catalyst Missing | ||
| 1665 | Aftertreatment Exhaust Gas Temp1: Voltage Below Normal | ||
| 1666 | Aftertreatment Exhaust Gas Temp1: Voltage Above Normal | ||
| 1674 | Aftertreatment Exhaust Gas Temp2: Voltage Below Normal | ||
| 1675 | Aftertreatment Exhaust Gas Temp2: Voltage Above Normal | ||
| 1689 | Real Time Clock Power | ||
| 1691 | After Oxidation Catalyst Efficiency: Below Normal | ||
| 1695 | Sensor Supply 5 High | ||
| 1695 | Sens supl 5 OOR high — Wrng | ||
| 1696 | Sensor Supply 5 Low | ||
| 1696 | Sens supl 5 OOR low — Wrng | ||
| 1737 | CAN Throttle Internal Failure Error | ||
| 1738 | CAN Throttle Internal Fault Error | ||
| 1739 | Engine Throttle Control Condition Exists | ||
| 1741 | CAN Throttle High Temp Warning Error | ||
| 1742 | CAN Throttle Temperature Limiting Error | ||
| 1743 | Throttle Control 2 OOR High | ||
| 1744 | Throttle Control 2 OOR Low | ||
| 1745 | Throttle Control 2 Incorrect | ||
| 1746 | Throttle Control 2 Out of Adjustment | ||
| 1747 | Throttle Control 2 Bad Device | ||
| 1748 | Throttle Control 2 Root Unknown | ||
| 1749 | Throttle Control 2 Condition Exists | ||
| 1751 | Throttle Control 2 Warning High | ||
| 1752 | Throttle Control 2 Moderate High | ||
| 1753 | Fuel Shutoff 2 OOR High | ||
| 1754 | Fuel Temperature 2 OOR High | ||
| 1755 | Fuel Temperature 2 OOR Low | ||
| 1756 | Gas Flow 2 OOR High | ||
| 1757 | Gas Flow 2 OOR Low | ||
| 1758 | Gas Flow 2 Incorrect Data | ||
| 1759 | FCV 2 Positive Feedback Incorrect | ||
| 1761 | FCV Actuator Error | ||
| 1765 | Engine Gas Control Valve Inlet Pressure 2 OOR High | ||
| 1766 | Engine Gas Control Valve Inlet Pressure 2 OOR Low | ||
| 1767 | Engine Gas Control Valve Outlet Pressure 2 OOR High | ||
| 1768 | Engine Gas Control Valve Outlet Pressure 2 OOR Low | ||
| 1769 | Engine Emergency Shutdown Indication OOR High | ||
| 1771 | Engine Emergency Shutdown Indication OOR Low | ||
| 1772 | Engine Derate Request OOR High | ||
| 1773 | Engine Derate Request OOR Low | ||
| 1774 | Oil Priming Pump OOR High | ||
| 1775 | Oil Priming Pump OOR Low | ||
| 1778 | Engine Heater Control Driver High Error | ||
| 1779 | Engine Heater Control Driver Low Error | ||
| 1781 | Shutdown Request OOR High | ||
| 1782 | Shutdown Request OOR Low | ||
| 1783 | Coolant Pump Control Driver High Error | ||
| 1784 | Coolant Pump Control Driver Low Error | ||
| 1785 | Oil Priming Pump Manual Override Input On | ||
| 1786 | Oil Priming Pump Stuck On Error | ||
| 1787 | Post Lube Oil Priming Error | ||
| 1788 | Maintenance Lube Oil Priming Error | ||
| 1789 | Pre-start Lube Oil Priming Error | ||
| 1791 | Failure To Meet Load Speed Error | ||
| 1792 | Idle when Circuit Breaker Closed | ||
| 1794 | Fire Detected | ||
| 1795 | Compressor Bypass Position High Error | ||
| 1796 | Compressor Bypass Position Low Error | ||
| 1797 | Compressor Bypass Control OOR High | ||
| 1798 | Compressor Bypass Control OOR Low | ||
| 1845 | WATER IN FUEL OOR HIGH — Warning | The water in fuel sensor is out of range (OOR), high. | |
| 1846 | WATER IN FUEL OOR LOW — Warning | The water in fuel sensor is out of range (OOR), low. | |
| 1847 | Engine Coolant Temperature High (Shutdown with Cooldown) | ||
| 1852 | WATER IN FUEL — Warning | The water in fuel is above normal and has reached the warning trip point. | If the engine can be stopped, allow the engine to cool down completely before proceeding with the following checks: 1. Check the fuel in the tank (local or remote). 2. Drain and re-fill the tank if necessary. Be aware of all Health and Safety, and environmental issues if draining the tank. |
| 1852 | Pre-High H2O In Fuel — Warning | The water in the fuel is above normal and has reached the warning trip point | If the engine can be stopped, allow the engine to cool down completely before proceeding with the following checks: Check fuel in tank (local or remote); Drain and re-fill if necessary. Be aware of all Health and Safety, and environmental issues if draining tank |
| 1853 | Annunciator Fault 2 — Configurable | The nature of the annunciator fault is an optional customer selection. | |
| 1853 thru 1855 | ANNUNCIATOR FAULT 1 thru 3 — Lamp: None. Indicates that Universal Annunciator Input (#1 − #3) is an active state. | The Service Tool can be used to program each of the fault functions and change the response from None to Warning or Shutdown. | |
| 1854 | Annunciator Fault 3 — Configurable | The nature of the annunciator fault is an optional customer selection. | |
| 1854 | Customer Input 2 — Event/fault code 1854 (customer input 2) becomes active when there is a ground input at TB1-2 on the back of the universal annunciator | Incorrectly configured or wiring issue | Make sure that the universal annunciator is correctly configured; for setup and configuration instructions, refer to the universal annunciator operator's manual; Check the wiring at TB1-2 and make sure that customer input 2 is wired correctly. Depending on the configuration of the annunciator, make sure that there is not a short or open circuit at the TB1-2 connection; Check the sender, relay, or device that is activating input 2 on the universal annunciator. Replace if faulty |
| 1855 | Annunciator Fault 1 — Configurable | The nature of the annunciator fault is an optional customer selection. | Check the condition for which "Annunciator Input #3" has been configured for. For example, if "Annunciator Input #3" was configured to become active when the fuel level is low, check the fuel level and add fuel if needed. After the issue is resolved, press the Reset button on the operator panel in order to clear the fault. If the fault does not clear, go to the next step |
| 1855 | Customer Input 3 — Event/fault code 1855 (customer input 3) becomes active when there is a ground input at TB1-3 on the back of the universal annunciator | Incorrect annunciator configuration or wiring; Faulty sender, relay, or device activating Input 3; Faulty annunciator | Make sure that the universal annunciator is correctly configured; check the wiring at TB1-3 and make sure that customer input 3 is wired correctly, make sure that there is not a short or open circuit at the TB1-3 connection; check the sender, relay, or device that is activating Input 3 on the universal annunciator, replace if faulty; if the wiring and configuration is satisfactory, replace the universal annunciator |
| 1866 | EGR autozero err — Wrng | ||
| 1893 | EGR comm timeout — Wrng | ||
| 1894 | VGT comm timeout — Wrng | ||
| 1896 | EGR valve stuck — Wrng | ||
| 1899 | EGR IR low error — Wrng | ||
| 1912 | Utility Loss of Phase Warning | The phase difference in electrical degrees between adjacent phase utility bus voltage phasors is greater than 150 degrees OR less than 90 degrees and this is true continuously for a Utility Loss of Phase Drop-Out Delay | Check to see that there is no incoming missing line at the SYNC1320 master synchronizer relevant Utility voltage inputs; Make sure there are no loose connections; Since there is little chance that there is a real phase difference in Utility voltage phasors, focus on bad connections |
| 1913 | Genset Loss of Phase Warning | This warning is active if the phase difference in electrical degrees between adjacent phase generator bus voltage phasors is greater than 150 degrees OR less than 90 degrees and this remains true continuously for the Utility Loss-of-Phase Drop-Out Delay | Verify that there is no missing incoming line at the SYNC1320 master synchronizer relevant to the generator bus voltage inputs; Make sure there are no loose connections; Since there is little chance that there is a real phase difference in Utility voltage phasors, focus on bad connections |
| 1914 | Utility Phase Rotation Warning | This warning is active whenever the Utility Phase Rotation mismatches the System Phase Rotation for at least one second | Use InPower to verify data processing on the SYNC1320 master synchronizer; Use InPower to check the System Phase Rotation setting; Verify that he Utility input voltage lines to the SYNC1320 master synchronizer match the ones shown on the terminal block as to phase rotation and line-to-line voltage; To avoid the possibility of a catastrophic breaker closure, make sure your genset and utility power lines are properly connected to relevant breakers; Check the genset and utility VT connections and polarities, if used |
| 1915 | Genset Phase Rotation Warning | This warning is active whenever the Genset Phase Rotation mismatches the System Phase Rotation for at least one second | Use InPower to verify data processing on the SYNC1320 master synchronizer; Use InPower to check the System Phase Rotation setting; Verify that he Genset input voltage lines to the SYNC1320 master synchronizer match the ones shown on the terminal block as to phase rotation and line-to-line voltage; To avoid the possibility of a catastrophic breaker closure, make sure your genset and utility power lines are properly connected to relevant breakers; Check the genset and utility VT connections and polarities, if used |
| 1916 | Sync Check OK Event | This event is for information purposes only. It is active whenever a Sync Check Close Allowed event is active | This event can be mapped to a programmable output |
| 1917 | HIGH FUEL LEVEL — Warning. Indicates the fuel level has risen above the warning trip point. | Allow the engine to cooldown completely before proceeding. a. Check fuel level. b. Reset the control and restart after correcting the problem. | |
| 1918 | VERY LOW FUEL LEVEL — Shutdown. Indicates that the fuel level has fallen below the shutdown trip point. | A. Check the fuel level and replenish if low. Look for possible leakage points and repair if necessary. b. Reset the control and restart after correcting the problem. | |
| 1933 | EGR dl voltage high — Wrng | ||
| 1934 | DGR dl voltage low — Wrng | ||
| 1935 | EGR dl comm error — Wrng | ||
| 1942 | Autozero thd err — Wrng | ||
| 1944 | ANNUNCIATOR OUTPUT CONFIGURATION ERROR — Warning | A mismatch in the configuration of one of the annunciator relay outputs. | Check the setup of devices on the network against duplicate use of the same annunciator relay output |
| 1961 | CBR dens derate — Wrng | ||
| 1965 | EXHAUST TEMPERATURE OOR — Warning | The exhaust temperature sensor is out of range (OOR), high or low. (Aux 101 I/O option). | |
| 1978 | SPEED BIAS OOR HIGH — Warning. Indicates the control has sensed the signal into the AUX101 (if installed) speed bias input is shorted high. | Check connection/wires. | |
| 1979 | SPEED BIAS OOR LOW — Warning. Indicates the control has sensed the signal into the AUX101 (if installed) speed bias input is shorted low. | Check connection/wires. | |
| 1985 | Int Man 3 Temperature Moderate High | ||
| 1986 | Int Man 4 Temperature Moderate High | ||
| 1992 | ENGINE OVERSPEED — Warning | The engine has exceeded normal operating speed. The default thresholds are 1725 RPM (50 Hz) or 2075 RPM (60 Hz). (ECM fault code). | |
| 1992 | Crankcase Sensor High | ||
| 1992 | Engine Crankshaft Speed Above Rated Speed (Warning) | ||
| 1993 | Aftertreatment Particulate Filter Missing | ||
| 1999 | Maximum Parallel Time | ||
| 2111 | Aftercooler temp sensor | ||
| 2111 | Coolant Inlet Temperature (LT) High Error | ||
| 2112 | Aftercooler temp sensor | ||
| 2112 | Coolant Inlet Temperature (LT) Low Error | ||
| 2113 | High aftercooler temp | ||
| 2113 | CIT (LT) High Warning Error | ||
| 2114 | High aftercooler temp | ||
| 2114 | CIT (LT) High Serious Error | ||
| 2115 | LT Coolant Pressure High Error | ||
| 2116 | LT Coolant Pressure Low Error | ||
| 2117 | LCP (LT) Low Warning Error | ||
| 2118 | Fuel Pressure Low — This fault is used when an optional low fuel pressure switch is installed | Low fuel pressure | Check fuel supply and change as required |
| 2121 | Exhaust Temperature 1 (A1) High Warning Error | ||
| 2122 | Exhaust Temperature 3 (A2) High Warning Error | ||
| 2123 | Exhaust Temperature 5 (A3) High Warning Error | ||
| 2124 | Exhaust Temperature 7 (A4) High Warning Error | ||
| 2125 | Exhaust Temperature 9 (A5) High Warning Error | ||
| 2126 | Exhaust Temperature 11 (A6) High Warning Error | ||
| 2127 | Exhaust Temperature 13 (A7) High Warning Error | ||
| 2128 | Exhaust Temperature 15 (A8) High Warning Error | ||
| 2129 | Exhaust Temperature 17 (A9) High Warning Error | ||
| 2131 | Exhaust Temperature 2 (B1) High Warning Error | ||
| 2132 | Exhaust Temperature 4 (B2) High Warning Error | ||
| 2133 | Exhaust Temperature 6 (B3) High Warning Error | ||
| 2134 | Exhaust Temperature 8 (B4) High Warning Error | ||
| 2135 | Exhaust Temperature 10 (B5) High Warning Error | ||
| 2136 | Exhaust Temperature 12 (B6) High Warning Error | ||
| 2137 | Exhaust Temperature 14 (B7) High Warning Error | ||
| 2138 | Exhaust Temperature 16 (B8) High Warning Error | ||
| 2139 | Exhaust Temperature 18 (B9) High Warning Error | ||
| 2141 | Start Air Pressure High Error | ||
| 2142 | Start Air Pressure Low Error | ||
| 2143 | SAP Overpressure Error | ||
| 2144 | Exhaust Temperature 16 (B8) High Serious Error | ||
| 2145 | Exhaust Temperature 18 (B9) High Serious Error | ||
| 2146 | EGT 17 (A9) OOR Low | ||
| 2147 | EGT 18 (B9) OOR Low | ||
| 2154 | Oil Filter Outlet Pressure High Error | ||
| 2155 | Oil Filter Outlet Pressure Low Error | ||
| 2157 | Int Man 2 Temp Abnormal Rate | ||
| 2158 | Int Man 3 Tmp Abnormal Rate | ||
| 2159 | Int Man 4 Tmp Abnormal Rate | ||
| 2184 | Fuel Injection Control Valve Root Cause Unknown | ||
| 2185 | Sensor Supply 4 High | ||
| 2186 | Sensor Supply 4 Low | ||
| 2188 | Exhaust O2 OOR High | ||
| 2191 | ST Throttle Pressure Error Status | ||
| 2192 | Exhaust O2 OOR Low | ||
| 2193 | HT Coolant Level Moderate High | ||
| 2198 | VGT Actuator Driver Circuit Unknown Cause | ||
| 2215 | Fuel Pump Press Low | ||
| 2215 | L fuel supl press — Wrng | ||
| 2217 | ECM data lost | ||
| 2217 | RAM Image Word Error | ||
| 2219 | Exhaust O2 Moderate High | ||
| 2221 | Exhaust O2 Moderate Low | ||
| 2222 | FUEL LEVEL SENSOR HIGH — Warning. Indicates the control has sensed the fuel level signal is shorted high. | Check sender/connectors/wires. | |
| 2223 | FUEL LEVEL SENSOR LOW — Warning. Indicates the control has sensed the fuel level signal is shorted low. | Check sender/connectors/wires. | |
| 2224 | FUEL LEVEL OOR — Warning | The fuel level sensor is out of range (OOR), high or low. (Aux 101 I/O option). | |
| 2231 | Knock Cylinder 1 (A1) OOR High | ||
| 2232 | Knock Cylinder 2 (B1) OOR High | ||
| 2233 | Knock Cylinder 3 (A2) OOR High | ||
| 2234 | Knock Cylinder 4 (B2) OOR High | ||
| 2235 | Knock Cylinder 5 (A3) OOR High | ||
| 2236 | Knock Cylinder 6 (B3) OOR High | ||
| 2237 | Knock Cylinder 7 (A4) OOR High | ||
| 2238 | Knock Cylinder 8 (B4) OOR High | ||
| 2239 | Knock Cylinder 9 (A5) OOR High | ||
| 2249 | Diesel low 2 pressure error | ||
| 2261 | Fuel Pump Press High | ||
| 2262 | Fuel Pump Press Low | ||
| 2263 | The fault number is shown on the digital display. | Battery temperature is too high (reaches 131 degrees F (55 degrees C)). | |
| 2263 | Battery temperature too high (reaches 55 °C [131 °F]) | ||
| 2263 | Batt temp high — Wrng | Battery's ambient temperature is too high | Move the battery into a cooler location. Charger will automatically begin charging again after the battery temperature lowers |
| 2263 | Battery Temp above 55 degrees C | Battery’s ambient temperature is too high.; Possible shorted cells within the battery is causing an excessive battery temperature increase. | Move the battery into a cooler location. Charger will automatically begin charging again after the battery temperature lowers.; Replace the battery. |
| 2264 | Batt temp low — Wrng | ||
| 2265 | Fuel priming pump circuit high | ||
| 2265 | High Fuel Lift Pump Volt | ||
| 2266 | Fuel priming pump circuit low | ||
| 2266 | Low Fuel Lift Pump Volt | ||
| 2272 | EGR DL POS Sensor Error | ||
| 2272 | EGR pos sens err — Wrng | ||
| 2273 | EGR Delta P OOR High Error | ||
| 2274 | EGR Delta P OOR Low Error | ||
| 2279 | Knock 11 (A6) High Warning | ||
| 2281 | Knock 11 (A6) Moderate Warning | ||
| 2282 | Knock 11 (A6) Critical Warning | ||
| 2288 | Turbo Charger 1 Speed Above Normal | ||
| 2292 | Diesel flow high error | ||
| 2293 | Diesel flow low error | ||
| 2298 | Fuel Shutoff 2 OOR Low | ||
| 2311 | EFC resistance error | ||
| 2311 | EFI Control Valve Fail | ||
| 2323 | Network Faults 5 through 8 | Network inputs (#5−#8) are in an active state | See Fault Codes 1313−1316 for corrective action |
| 2323 - 2326 | NETWORK FAULT 5 thru 8 — Lamp: Warning/Shutdown or none for status message. Indicates network input (#5−#8) is in an active state. | See 1313−1316 fault code corrective action. | |
| 2323-2326 | Network Fault 5 thru 8 | ||
| 2323-2326 | Network Faults 5 through 8 | Network inputs (#5−#8) are in an active state | Indicates network inputs (#5−#8) are in an active state. See Fault Codes 1313−1316 for corrective action. |
| 2326 | Network Faults 5 through 8 | Network inputs (#5−#8) are in an active state | See Fault Codes 1313−1316 for corrective action |
| 2327 | PTC Fault | ||
| 2328 | Utility Bus Available Event | This event is for information purposes only. This event is active if the faults/events listed below are inactive simultaneously. If a sensor is disabled, the fault is considered inactive: Fault 2331 − Utility Undervoltage Warning; Fault 2358 − Utility Overvoltage Warning; Fault 1223 − Utility Frequency Warning; Fault 1912 − Utility Loss of Phase Warning; Fault 1915 − Genset Phase Rotation Warning; Fault 1914 − Utility Phase Rotation Warning | This event can be mapped to a programmable output |
| 2329 | Low S1 Frequency | ||
| 2331 | Utility Undervoltage Warning | The utility bus voltage is less than the Undervoltage Drop-Out Threshold and it stays there for a time period greater than the Undervoltage Drop-Out Delay | Make sure the Utility Undervoltage Threshold is safe for the connected load; Verify that this value is not too close to the rated voltage; Make sure that the time delay for this fault is not set too low; Check the AVR system operation at each individual genset; Make sure that all AC voltage sensors are properly calibrated at the SYNC1320 master synchronizer and the Utility; Use InPower to monitor and make any necessary adjustment; Check the wire size, distance, and loose connections |
| 2331 | Low S1 Voltage | AC input voltage is more than 10% below nominal rated voltage | Check level of input voltage. Charger will not operate with voltage 10% or more below nominal. |
| 2331 | LOW AC VOLT — Low Input Voltage | AC input voltage is more than 10% below nominal rated voltage | Check level of input voltage. Charger will not operate with voltage 10% or more below nominal. |
| 2335 | EXCITATION FAULT — Lamp: Shutdown. Indicates a loss of all three voltage sense leads or failure in excitation circuit. | Parameters incorrectly configured; wiring issue(s) | Check field wiring (X1 and X2) for shorts or opens. |
| 2336 | MEMORY ERROR — Lamp: Shutdown. Indicates control memory error. Data corruption of critical operating parameters. | A control memory error, resulting in data corruption of critical operating parameters | Try reloading calibration file. |
| 2337 | Pwr Tran Disabled | ||
| 2338 | Pwr Tran Failure | ||
| 2339 | Pwr Down Enabled | ||
| 2341 | HIGH CONTROL TEMP — Lamp: Warning. Control temperature is above normal (158 F [70 C]) for a time greater than control temperature set time. | The control temperature is above normal (158° F [70° C]) for a time greater than the control temperature set time | Check genset room air flow. |
| 2342 | TOO LONG IN IDLE — Lamp: Warning. Indicates genset has been in Idle mode too long. | Maximum Idle Time parameters configured incorrectly | Exit idle mode. |
| 2345 | Turbo speed error | ||
| 2349 | APC fuel low2 prs — Wrng | ||
| 2351 | EGR dl motor shrt — Wrng | ||
| 2357 | EGR dl motor lock — Wrng | ||
| 2358 | Utility Overvoltage Warning | The utility bus voltage is greater than the Utility Overvoltage Drop-Out Threshold and it stays there for a time period greater than the Drop-Out Delay | Make sure the Utility Undervoltage Threshold is safe for the connected load; Make sure the Utility Overvoltage Threshold is safe for the connected load; Verify that this value is not too close to the rated voltage; Make sure that the time delay for this fault is not set too low; Make sure that all AC voltage sensors are properly calibrated in the SYNC1320 master synchronizer; Use InPower to monitor and make any necessary adjustment; Check VT connections, if used |
| 2358 | High S1 Voltage | AC input voltage is more than 10% above nominal rated voltage | Check level of input voltage. Charger will not operate with voltage 10% or more above nominal. |
| 2358 | HIGH AC VOLT — High Input Voltage (12VDC) | AC input voltage is more than 5% above nominal rated voltage | Check level of input voltage. Charger will not operate with voltage 5% or more above nominal. |
| 2358 | Utility over volt sensor | ||
| 2359 | EGR delta ir high — Wrng | ||
| 2373 | Exhst prs cir high — Wrng | ||
| 2374 | Exhst prs cir low — Wrng | ||
| 2375 | Exhst rcir temp high — Wrng | ||
| 2376 | Exhst rcir temp low — Wrng | ||
| 2377 | Fan clutch low control error | ||
| 2396 | S1 CB Not Close | ||
| 2396 | Utility CB failed to close | ||
| 2397 | S1 CB Not Open | ||
| 2397 | Utility CB failed to open | ||
| 2398 | AMBIENT TEMPERATURE OOR — Warning | The ambient temperature sensor is out of range (OOR), high or low. (Aux 101 I/O option). | |
| 2416 | Calibration Checksum Error Warning | This warning is displayed whenever there is a specific mismatch regarding comparison of some internal data on the microprocessor | Cycle power to the SYNC1320 master synchronizer; If the fault persists, use InPower to perform an Initial Calibration; If the problem continues, replace the control board |
| 2425 | GHC high volt error 2 | ||
| 2426 | GHC low volt error 2 | ||
| 2454 | ECM Overtemperature Error | ||
| 2498 | Exhaust Temperature 10 (B5) Abnormal Rate | ||
| 2499 | Exhaust Temperature 12 (B6) Abnormal Rate | ||
| 2511 | Exhaust Temperature 14 (B7) Abnormal Rate | ||
| 2512 | Exhaust Temperature 16 (B8) Abnormal Rate | ||
| 2513 | Exhaust Temperature 18 (B9) Abnormal Rate | ||
| 2514 | Exhaust Temperature 19 (A10) Abnormal Rate | ||
| 2515 | Exhaust Temperature 20 (B10) Abnormal Rate | ||
| 2517 | Compressor Outlet Pressure High Error | ||
| 2518 | Compressor Outlet Pressure Low Error | ||
| 2521 | Bank ID Error | ||
| 2522 | Continuous Light Knock Error 1 (A1) | ||
| 2523 | Continuous Light Knock Error 2 (B1) | ||
| 2524 | Continuous Light Knock Error 3 (A2) | ||
| 2525 | Continuous Light Knock Error 4 (B2) | ||
| 2526 | Continuous Light Knock Error 5 (A3) | ||
| 2527 | Continuous Light Knock Error 6 (B3) | ||
| 2528 | Continuous Light Knock Error 7 (A3) | ||
| 2529 | Continuous Light Knock Error 8 (B4) | ||
| 2531 | Continuous Light Knock Error 9 (A5) | ||
| 2532 | Continuous Light Knock Error 10 (B5) | ||
| 2539 | High Voltage Bias | Check connection/wires. | |
| 2541 | Low Voltage Bias | Check connection/wires. | |
| 2542 | VOLTAGE BIAS OOR — Warning | The voltage bias circuit output is out of range (OOR), high or low. (Aux 101 I/O option). | |
| 2542 | BIAS SIGNAL LOST — Shutdown. Indicates the control has sensed that the speed or voltage bias signals coming from the AUX101 (if installed) are lost. | A. Check PCCNet connections/wires. b. Reset the control and restart after correcting the problem. | |
| 2544 | OVER TEMP — Charger is overheating | Charger's ambient temperature is too high | Power down the charger and let it to cool down. After the temperature lowers, power up the charger. |
| 2544 | Charger is overheating | Charger’s ambient temperature is too high.; Charger’s internal cooling fan is blocked, failed, or air inlets are covered. | Move the charger to a cooler location. The charger will automatically begin charging again after the internal temperature lowers.; Verify that the charger’s air inlets on the side of the charger are not blocked and nothing is interfering with fan rotation. |
| 2545 | KEYSWITCH RESET REQUIRED — Shutdown | A datalink failure. Communications are lost between the PowerCommand® 2.3 control and the engine control module. | |
| 2553 | Engine Oil Level Low Warning Error | ||
| 2554 | Exhaust Gar Pressure Incorrect | ||
| 2554 | Exhst press keyon — Wrng | ||
| 2555 | Intake air heater #1 circuit high | ||
| 2555 | Low GHC 1 Voltage | ||
| 2556 | Intake air heater #1 circuit low | ||
| 2556 | High GHC 1 Voltage | ||
| 2567 | DG Air Compressor Trip Error | ||
| 2568 | Gas Supply Pressure Critical High | ||
| 2569 | Gas Supply Pressure Critical Low | ||
| 2586 | Spark Plug 1 (A1) High Warning | ||
| 2587 | Spark Plug 2 (B1) High Warning | ||
| 2588 | Spark Plug 3 (A2) High Warning | ||
| 2589 | Spark Plug 4 (BS) High Warning | ||
| 2591 | Spark Plug 5 (A3) High Warning | ||
| 2592 | Spark Plug 6 (B3) High Warning | ||
| 2593 | Spark Plug 1 (A1) Low Warning | ||
| 2594 | Spark Plug 2 (B1) Low Warning | ||
| 2595 | Spark Plug 3 (A2) Low Warning | ||
| 2596 | Spark Plug 4 (B2) Low Warning | ||
| 2597 | Spark Plug 5 (A3) Low Warning | ||
| 2598 | Spark Plug 6 (B3) Low Warning | ||
| 2619 | AUX 101 ANALOG INPUT 1 — Diagnostic | The nature of the Base I/O Module event is an optional customer selection. (Aux 101 I/O Module option). | Each event function can be programmed (using InPower service tool or access to the Setup menu), as follows: 1. Change display name using up to 32 characters 2. Select active low or high input. |
| 2619 | Aux101 0 Input 1 Fault | ||
| 2621 | AUX 101 ANALOG INPUT 2 — Diagnostic | The nature of the Base I/O Module event is an optional customer selection. (Aux 101 I/O Module option). | See code 2619 |
| 2621 | Aux101 0 Input 2 Fault | ||
| 2622 | AUX 101 ANALOG INPUT 3 — Diagnostic | The nature of the Base I/O Module event is an optional customer selection. (Aux 101 I/O Module option). | See code 2619 |
| 2622 | Aux101 0 Input 3 Fault | ||
| 2623 | AUX 101 ANALOG INPUT 4 — Diagnostic | The nature of the Base I/O Module event is an optional customer selection. (Aux 101 I/O Module option). | See code 2619 |
| 2623 | Aux101 0 Input 4 Fault | ||
| 2624 | AUX 101 ANALOG INPUT 5 — Diagnostic | The nature of the Base I/O Module event is an optional customer selection. (Aux 101 I/O Module option). | See code 2619 |
| 2624 | Aux101 0 Input 5 Fault | ||
| 2625 | AUX 101 ANALOG INPUT 6 — Diagnostic | The nature of the Base I/O Module event is an optional customer selection. (Aux 101 I/O Module option). | See code 2619 |
| 2625 | Aux101 0 Input 6 Fault | ||
| 2626 | AUX 101 ANALOG INPUT 7 — Diagnostic | The nature of the Base I/O Module event is an optional customer selection. (Aux 101 I/O Module option). | See code 2619 |
| 2626 | Aux101 0 Input 7 Fault | ||
| 2627 | AUX 101 ANALOG INPUT 8 — Diagnostic | The nature of the Base I/O Module event is an optional customer selection. (Aux 101 I/O Module option). | See code 2619 |
| 2627 | Aux101 0 Input 8 Fault | ||
| 2628 | AUX 102 DIGITAL INPUT 9 — Diagnostic | The nature of the Aux I/O Module event is an optional customer selection. (Aux 102 I/O Module option). | Each event function can be programmed (using InPower service tool or access to the Setup menu), as follows: 1. Change display name using up to 32 characters 2. Select active low or high input. |
| 2628 | Aux102 0 Expansion Input 9 Fault | ||
| 2629 | AUX 102 DIGITAL INPUT 10 — Diagnostic | The nature of the Aux I/O Module event is an optional customer selection. (Aux 102 I/O Module option). | See code 2628 |
| 2629 | Aux102 0 Expansion Input 10 Fault | ||
| 2631 | AUX 102 DIGITAL INPUT 11 — Diagnostic | The nature of the Aux I/O Module event is an optional customer selection. (Aux 102 I/O Module option). | See code 2628 |
| 2631 | Aux102 0 Expansion Input 11 Fault | ||
| 2632 | AUX 102 DIGITAL INPUT 12 — Diagnostic | The nature of the Aux I/O Module event is an optional customer selection. (Aux 102 I/O Module option). | See code 2628 |
| 2632 | Aux102 0 Expansion Input 12 Fault | ||
| 2634 | VGT Actuator Controller Bad Device/Component | ||
| 2635 | VGT Actuator Driver Condition Exists | ||
| 2636 | VGT Actuator Circuit Abnormal Update Rate | ||
| 2637 | Aftertreatment Catalyst Face Plugged Reason Unknown | ||
| 2643 | Throttle Position 2 Feedback OOR High | ||
| 2644 | Throttle Position 2 Feedback OOR Low | ||
| 2646 | HT Coolant Temperature Condition Exists | ||
| 2651 | Exhaust Gas Temperature Right Manifold OOR High | ||
| 2652 | Exhaust Gas Temperature Right Manifold OOR Low | ||
| 2653 | Exhaust St 2 Temp High | ||
| 2654 | Exhaust Stack Temp Right Bank Above Sh Threshold | ||
| 2655 | Exhaust Gas Temperature Left Manifold OOR High | ||
| 2656 | Exhaust Gas Temperature Left Manifold OOR Low | ||
| 2657 | Exhaust St 1 Temp High | ||
| 2658 | Exhaust Stack Temp Left Bank Above Sh Threshold | ||
| 2661 | At Least One Unacknowledged Most Severe Fault 0 Condition Exists | ||
| 2662 | One or more Acknowledged Engine Fault Codes | Engine Fault Code active | Using InSite, connect to the engine ECM; check for active fault codes; diagnose and repair any active fault codes; refer to the engine service manual; clear all engine fault codes; cycle power to the control |
| 2662 | At Least One acknowledged: Most Severe Fault | ||
| 2676 | ALTERNATOR FREQUENCY CONFLICT — Shutdown | The measured alternator line frequency and measured alternator excitation frequency do not agree. | Check the Alternator Line Frequency Gain trim using the operator panel or the InPower service tool. When Shunt is selected, a gain of 1 is the default. When PMG is selected, a gain of 2 is the default; Measure the Alternator Line Frequency (J22-1 to J22-4); Measure the Alternator Excitation Frequency (J18-1 to J18-2); Calculate the Alternator Excitation Frequency value using the following equation: Alternator Line Frequency * Alternator Line Frequency Gain = Alternator Excitation Frequency; Compare the Alternator Excitation Frequency that was measured to the Alternator Excitation Frequency that was calculated; Check the voltage sense leads and exciter power lead for open circuits or short circuits |
| 2677 | FAIL TO STOP — Shutdown | The generator set continues to run after receiving a stop command from the controller. | Check keyswitch operation and make sure it is not stuck closed (use a multimeter and check continuity across the relay K3-1 and K3-4; with the Emergency stop pressed, the relay should be open); check for a stuck FSO valve, check the FSO relay and related wiring, check that the FSO is not mechanically stuck; if issue persists, consult DTC 1181 in the E-Controls manual |
| 2678 | Charging Alternator Fail | Faulty engine DC alternator or open circuit | Check the wiring of the alternator for open circuits; if the wiring is satisfactory, measure the output voltage of the alternator to the battery while the engine is running; normal charging voltage is 12-14 VDC in a 12 V system or 24-26 VDC in a 24 V system; if the appropriate output is not observed, replace the DC alternator |
| 2678 | CHARGER FAILURE — Warning | The battery charging alternator has not reached an acceptable voltage range within the selected time period (default is 120 seconds). This warning is also displayed if your alternator is a type that does not support the control's charging alternator logic functionality. | If this occurs, this warning can be disabled if the Charging Alt. Enable setting is set to "No". |
| 2693 | SPEED BIAS OOR — Warning | The speed bias circuit output is out of range (OOR), high or low. (Aux 101 I/O Module option). | |
| 2694 | ALTERNATOR RTD OOR — Warning | The alternator RTD sensor is out of range (OOR), high or low. (Aux 101 I/O Module option). | |
| 2696 | ALTERNATOR RTD TEMP HIGH — Shutdown | The alternator temperature is above normal and has reached the shutdown trip point. (I/O Module option). | |
| 2724 | Gas Supply Pressure Moderate High | ||
| 2725 | Gas Supply Pressure Moderate Low | ||
| 2727 | Critical CEN Not Accessible Error | ||
| 2729 | I/O MODULE LOST — Warning | An intermittent datalink between the I/O module and the control board. (Aux 101 I/O Module option). | The connection between AUX 101 and PCC 1302 is incorrect; make sure there is proper wiring: PCC 1302 TB1-1 – PCC Net A (+) to AUX 101 J1-3; PCC 1302 TB1-2 – PCC Net B (-) to AUX 101 J1-4; PCC 1302 TB1-3 – B+ Return to AUX 101 J14-2; PCC 1302 TB1-5 – Customer Fused B+ to AUX 101 J14-1; PCC 1302 TB15-5 – System Wake-up to AUX 101 J1-5 |
| 2731 | I/O MODULE LOST — Shutdown | The datalink between the I/O module and the control board is lost. (Aux 101 I/O Module option). | The connection between AUX 101 and PCC 1302 is incorrect; make sure there is proper wiring: PCC 1302 TB1-1 – PCC Net A (+) to AUX 101 J1-3; PCC 1302 TB1-2 – PCC Net B (-) to AUX 101 J1-4; PCC 1302 TB1-3 – B+ Return to AUX 101 J14-2; PCC 1302 TB1-5 – Customer Fused B+ to AUX 101 J14-1; PCC 1302 TB15-5 – System Wake-up to AUX 101 J1-5 |
| 2737 | Exhaust Gas Temperature Critical High | ||
| 2814 | Genset CT Ratio Low | Incorrect CT ratio setup (or feature code) | The control uses voltage, kW, and the CT ratio in order to determine if the CT ratio is correct for the operation of the generator set; use the CT ratio calculator in InPower to determine the correct CT ratio for this generator set; then enter the correct CT ratio via InPower or through the operator panel; to access the Genset CT ratio configuration menu on the operator panel go to Setup > OEM Setup > OEM Alt Setup > Genset CT Ratio and set the "Genset CT Ratio primary" and "Genset CT Ratio secondary" parameters appropriately for the application |
| 2815 | Genset CT Ratio High | The control is set up with the incorrect CT ratio (or feature code) | The control uses voltage, kW, and the CT ratio in order to determine if the CT ratio is correct for the operation of the generator set |
| 2897 | FACTORY BLOCK CORRUPT — Shutdown | A fatal software error occurred in the PowerCommand® 2.3 control. | Connect to device using InPower version 10.0 or greater; in InPower, right click on the device, and select Initial Calibration (Recover Device) from the menu that appears; if the capture file for the device is available, select "overlay capture file", if not, select feature codes (feature codes can be found on the nameplate of the device, located on the alternator housing); if the problem persists, contact the factory for support |
| 2898 | PERIODIC/FAULT CORRUPT — Warning | Either the periodic data file or the fault history file has been corrupted. | Remove and re-apply power to the control to clear the fault. (Periodic and/or fault history data will be lost after re-setting the control). |
| 2899 | USER BLOCK CORRUPT — Shutdown | A fatal software error occurred in the PowerCommand® 2.3 control. | Connect to the device using InPower version 10.0 or greater; in InPower, right click on the device, and select Initial Calibration (Recover Device) from the menu that appears; if the capture file for the device is available, select "overlay capture file", if not, select feature codes (feature codes can be found on the nameplate of the device, located on the alternator housing); if the problem persists, contact the factory for support |
| 2911 | TRIM BLOCK CORRUPT — Shutdown | A fatal software error occurred in the PowerCommand® 2.3 control. | Connect to the device using InPower version 10.0 or greater; In InPower, right click on the device, and select Initial Calibration (Recover Device) from the menu that appears; If the capture file for the device is available, select "overlay capture file". If not, select feature codes. Feature codes can be found on the nameplate of the device, located on the alternator housing; If the problem persists, contact the factory for support |
| 2916 | Utility AC Meter Failed | ||
| 2917 | Gen Bus Voltage OOR Hi | ||
| 2918 | Utility Voltage OOR Hi | ||
| 2919 | Utility Current OOR Hi | ||
| 2921 | Gen Bus Current OOR Hi | ||
| 2922 | High Genset Neutral Curr | ||
| 2923 | Gen Bus kW OOR Hi | Incorrect application or setup | The generator set is being used in an incorrect application in which the power monitoring is out of range; for example, if there are 25 paralleled generator sets operating at 2 MW and 13.8 KV, the generator set will not be able to monitor power above 32.767 MW and will display event/fault code 2923; this application will require external switchgear to monitor power; Genset Bus CT Ratio is incorrectly set, refer to event/fault code 2921; Genset Bus PT Ratio is incorrectly set, refer to event/fault code 2917 |
| 2924 | Gen Bus kVAR OOR Hi | Incorrect application or setup | The generator set is being used in an incorrect application in which the power monitoring is out of range; for example, if there are 25 paralleled generator sets operating at 2 MVAR and 13.8 KV, the generator set will not be able to monitor power above 32.767 MVAR and will display event/fault code 2924; this application will require external switchgear to monitor power; Genset Bus CT Ratio is incorrectly set, refer to event/fault code 2921; Genset Bus PT Ratio is incorrectly set, refer to event/fault code 2917 |
| 2925 | Gen Bus kVA OOR Hi | Incorrect application or setup | The generator set is being used in an incorrect application in which the power monitoring is out of range; for example, if there are 35 paralleled generator sets operating at 2 MVA and 25 KV, the generator set will not be able to monitor power above 65.535 MVA and will display event/fault code 2925; this application will require external switchgear to monitor power; Genset Bus CT Ratio is incorrectly set, refer to event/fault code 2921; Genset Bus PT Ratio is incorrectly set, refer to event/fault code 2917 |
| 2926 | Utility kW OOR Hi | Incorrect application or setup | The generator set is being used in an incorrect application in which the power monitoring is out of range; for example, if the Utility power is 40 MW, the generator set will not be able to monitor power above 32.767 MW and will display event/fault code 2926; this application will require external switchgear to monitor power; Utility CT Ratio is incorrectly set, refer to event/fault code 2919; Utility PT Ratio is incorrectly set, refer to event/fault code 2918 |
| 2927 | Utility kVAR OOR Hi | Incorrect application or setup | The generator set is being used in an incorrect application in which the power monitoring is out of range; for example, if the Utility power is 40 MVAR, the generator set will not be able to monitor power above 32.767 MVAR and will display event/fault code 2927; this application will require external switchgear to monitor power; Utility CT Ratio is incorrectly set, refer to event/fault code 2919; Utility PT Ratio is incorrectly set, refer to event/fault code 2918 |
| 2928 | Utility kVA OOR Hi | Incorrect application or setup | The generator set is being used in an incorrect application in which the power monitoring is out of range; for example, if the Utility power is 70 MVAR, the generator set will not be able to monitor power above 65.535 MVA and will display event/fault code 2928; this application will require external switchgear to monitor power; Utility CT Ratio is incorrectly set, refer to event/fault code 2919; Utility PT Ratio is incorrectly set, refer to event/fault code 2918 |
| 2931 | Aux101 Device ID Fault | ||
| 2932 | Aux101 Oil Temperature OOR Hi | ||
| 2933 | Aux101 Oil Temperature OOR Low | ||
| 2934 | High Ambient Temp | ||
| 2935 | Low Ambient Temp | ||
| 2936 | Fuel Level High | ||
| 2937 | Fuel Level Low | ||
| 2938 | Earth/Ground Fault | "Configurable Input Active State Selection" parameter is incorrectly configured for Ground Fault | Through the operator panel, check the switch input setting (active closed or open) for the Configurable Input setup for Ground Fault; ensure that the switch input setting is correctly set; if "Configurable Input Function Pointer" parameter is set to Ground Fault and if "Configurable Input Active State Selection" parameter is set to "active closed", event/fault code 2938 will become active when the input is a ground input; if "Configurable Input Function Pointer" parameter is set to Ground Fault and if "Configurable Input Active State Selection" parameter is set to "active open", event/fault code 2938 will become active when the input is an open circuit; to access the input configuration on the operator panel go to Setup > Configurable I/O > Config Input Menu > Active and set the "Configurable Input Active State Selection" parameter appropriately for the application |
| 2939 | Modbus Failure | ||
| 2941 | Remote Shutdown Fault Reset Occurrence | ||
| 2942 | Shutdown Override Fail | ||
| 2943 | Manual Sw Config Fail | ||
| 2944 | Auto Switch Config Fail | ||
| 2945 | Rupture Basin Switch | ||
| 2946 | Exhaust St 2 Temp Low | ||
| 2947 | Exhaust St 1 Temp Low | ||
| 2948 | Exhaust St 2 Temp High | ||
| 2949 | Exhaust St 1 Temp High | ||
| 2951 | Alternator 1 Temp High | ||
| 2952 | Alternator 1 Temp Low | ||
| 2953 | Alternator 1 Temp High | ||
| 2954 | Alternator 2 Temp High | ||
| 2955 | Alternator 2 Temp Low | ||
| 2956 | Alternator 2 Temp High | ||
| 2957 | Alternator 3 Temp High | ||
| 2958 | Alternator 3 Temp Low | ||
| 2959 | Alternator 3 Temp High | ||
| 2961 | EGR Torque Derate Error | ||
| 2962 | EGR RPM Derate Error | ||
| 2962 | Unack fault warn — Wrng | ||
| 2963 | HT Coolant Temperature Warning High | ||
| 2964 | INTAKE MANIFOLD TEMPERATURE HIGH — Warning | The engine has begun to overheat (intake manifold temperature has risen to an unacceptable level). Increase in load or higher ambient temperature may cause Intake Manifold Temp High (code 155) shutdown. | If the engine can be stopped, allow the engine to cool down completely before proceeding with the following check: 1. Review the code 151 correction list for possible causes. |
| 2964 | Intake Air Temperature Higher than Expected — The manifold air temperature exceeds 94 °C (200 °F) for more than 60 seconds, while the engine is running (DTC 111 active). | Exhaust air entering intake | Inspect the exhaust system for leaks. Check the exhaust manifold gaskets, turbo gasket (if equipped), and exhaust tubing for holes or escaping exhaust. Replace the faulty component(s) if necessary; The unit is not properly ventilated. Make sure that the unit is greater than 5 feet from any obstruction. For units located inside of a structure, make sure that exhaust gases do not exit within 5 feet of the intake for the structure or generator set. For enclosed sets, make sure that there are no objects blocking the exhaust opening on the top of the enclosure, or objects that may redirect exiting airflow towards the intake end of the unit. |
| 2965 | Genset Bus Available Event | This event is for information purposes only. This event is active if the faults/events listed below are inactive simultaneously. If a sensor is disabled, the fault is considered inactive: Fault 1328 Generator Bus Breaker Tripped Warning; Fault 1452 − Generator Bus Breaker Fail-To-Close Warning; Genset Stop Command must be inactive and Gen CB can be open or closed; Fault 1225 − Generator Bus Undervoltage Warning; Fault 1224 − Generator Bus Overvoltage Warning; Fault 1226 − Generator Bus Frequency Warning; Fault 1913 − Generator Bus Loss of Phase Warning; Fault 1915 − Generator Bus Phase Rotation Warning | This event can be mapped to a programmable output |
| 2966 | PTC Timeout | ||
| 2967 | GOVERNOR FAULT — Lamp: Warning. Governor hardware drive circuitry contains a fault condition. | Governor hardware drive circuitry contains a fault condition | Governor hardware drive circuitry contains a fault condition. |
| 2968 | AVR FAULT — Lamp: Warning. Indicates AVR hardware contains a fault condition. | Indicates AVR hardware contains a fault condition | Indicates AVR hardware contains a fault condition. |
| 2969 | LON FAILURE — Lamp: Warning. Indicates no communications with LonWorks board. | Indicates no communications with the LonWorks board | Indicates no communications with the LonWorks board. |
| 2971 | Test/Exercise Fault | ||
| 2972 | FIELD OVERLOAD — Lamp: Shutdown. AVR Field has been at Max Field for a time greater than the allowed Max Field Time. | Max Field Time Delay parameter configured incorrectly | The AVR Field has been at Max Field for a time greater than the allowed Max Field Time. |
| 2973 | Intake manifold pressure sen error | ||
| 2973 | Charge Press IR Error | ||
| 2977 | Low Coolant Level 2 Sw | The engine coolant level, in the second radiator, has fallen below the trip point | If the generator is powering critical loads and cannot be shut down, wait until the next shutdown period. If the engine can be stopped, allow the engine to cool down completely before proceeding: Look for possible coolant leakage points and repair if necessary. Check coolant level and replenish if low; Reset the control and restart after locating and correcting the problem |
| 2977 | Indicates the engine coolant level, in the second radiator, has fallen below the trip point. | Look for possible coolant leakage points and repair if necessary | |
| 2978 | Low Intake Manf 1 Temp | ||
| 2979 | High Alternator Temp Sw | ||
| 2981 | High Drive Bearing Temp | ||
| 2982 | Low Drive Bearing Temp | ||
| 2983 | High Drive Bearing Temp | ||
| 2984 | High Free Bearing Temp | ||
| 2985 | Low Free Bearing Temp | ||
| 2986 | High Free Bearing Temp | ||
| 2992 | High Intake Manf 1 Temp | ||
| 2993 | Battery Charger Sw Fail | ||
| 2994 | MC68302 Error | ||
| 2995 | Int Man Pressure 1 Critical High | ||
| 2996 | Int Man Pressure 1 Moderate High | ||
| 2997 | Exhaust O2 Critical Low | ||
| 3111 | Speed bias analog i/p signal is shorted low — No effect on engine performance. | Check if the OEM harness is shorted to ground, if yes, replace the harness. | |
| 3111 | Excessive Mech Vibration 1 (A1) | ||
| 3112 | Speed/load raise switch is shorted high — No effect on engine performance. | Check the speed raise switch on the AMF panel. If a short is observed, replace it; Also check the harness for short. | |
| 3112 | Excessive Mech Vibration 2 (B1) | ||
| 3113 | Speed/load raise switch is shorted low — No effect on engine performance. | Check the speed low switch on the AMF panel. If a short is observed, replace it; Also check the harness for short. | |
| 3113 | Excessive Mech Vibration 3 (A2) | ||
| 3114 | Excessive Mech Vibration 4 (B2) | ||
| 3115 | No engine speed signal is detected. — Engine speed is not detected by the controller causing shutdown of the engine. | Check whether the MPU is connected correctly to the harness; The MPU coil resistance should be as per sensor specification, else replace the MPU; Check tip of the MPU for damage; The gap between MPU tip & engine flywheel ring gear teeth should be as per engine specification; Check the continuity between Connector A (Pin ‘B’ and Pin ‘T‘) and MPU connector. If no continuity is observed repair the wires or replace the engine harness; Voltage should be more than 1.5V AC; Perform MPU body test. | |
| 3115 | Excessive Mech Vibration 5 (A3) | ||
| 3116 | Fuel actuator stuck — Actuator does not respond to i/p signal. Engine is shutdown. | Check engine fuel supply & ensure that air lock has not occurred; If fuel filters are choked, clean or replace them; Replace or clean the actuator with diesel if it is sticky; If actuator is not getting supply, Check the engine harness for short circuits or open circuits; For short circuits: If short or open circuits observed between Connector A and actuator connector, repair the wires that have short or open circuits or replace the engine harness; For open circuits: Check the continuity between Connector A (pin ‘F’ and pin ‘M’) and the fuel actuator connector. If no continuity is observed, repair the wires or replace the engine harness; Check actuator coil resistance. | |
| 3116 | Excessive Mech Vibration 6 (B3) | ||
| 3117 | Excessive Mech Vibration 7 (A4) | ||
| 3118 | Power down failure fault — Controller will not powerdown causing battery drain. | Replace the controller | |
| 3118 | Excessive Mech Vibration 8 (B4) | ||
| 3119 | Excessive Mech Vibration 9 (A5) | ||
| 3121 | Excessive Mech Vibration 10 (B5) | ||
| 3122 | Excessive Mech Vibration 11 (A6) | ||
| 3123 | Customer Input 1 Warning | Check input as per customer selection | |
| 3123 | Excessive Mech Vibration 12 (B6) | ||
| 3124 | Customer Input 1 Shutdown | Check input as per customer selection | |
| 3124 | Excessive Mech Vibration 13 (A7) | ||
| 3125 | Customer Input 2 Warning | Check input as per customer selection | |
| 3125 | Excessive Mech Vibration 14 (B7) | ||
| 3126 | Customer Input 2 Shutdown | Check input as per customer selection | |
| 3126 | Excessive Mech Vibration 15 (A8) | ||
| 3127 | Excessive Mech Vibration 16 (B8) | ||
| 3128 | Excessive Mech Vibration 17 (A9) | ||
| 3129 | Excessive Mech Vibration 18 (B9) | ||
| 3131 | Secondary Engine Overspeed | ||
| 3133 | Aftertreatment Particulate Filter Outlet Pressure OOR High | ||
| 3134 | Aftertreatment Particulate Filter Outlet Pressure OOR Low | ||
| 3135 | Aftertreatment Particulate Filter Pressure Data Eratic | ||
| 3226 | Base Load | ||
| 3227 | Peak Shave | ||
| 3228 | Aftertreatment Intake Nox Sensor: Data Incorrect * | ||
| 3232 | Aftertreatment Intake Nox Sensor: Abnormal Update * | ||
| 3245 | Aftertreatment Particulate Filter System: Not Responding * | ||
| 3251 | Aftertreatment Catalyst Intake Temp: Data Valid: Above Normal * | ||
| 3416 | Start System Fault – Condition Exists — Warning | Refer to fault codes 359 and 1438 | |
| 4332 | Loss of Communication with (device) on Channel 1 or 2 | There has been a power interruption to the device that the PC500/550 is monitoring. | PC2100, PC3100, PC3200, PC3201 and ATS Controls: 1. Verify if there has been a power interruption to the Modlon that is sending Modbus information from the device to which communication was lost. 2. If Modlon has not lost power, check if any of the devices (Generator Sets or ATSs) connected to the Modlon have lost power to their controls. For generator sets, this fault can be caused if a generator set battery is disconnected. For ATSs, this fault can be caused if there is not a B+ on J27-21 of the ATS digital board and there is an interruption to the utility power. PC1301, PC1302, PC2300, PC3300 Controls: If the battery of any of the generator sets being monitored is disconnected, make sure that the generator set that has lost communication to the PC500/550 is properly energized. |
| 4333 | Fail to Send SMS Notification | The wireless service for the modem has not been activated. | GSM Modem: Verify that the SIM card being used has been properly activated by the wireless provider, and that it has the capability to send text messages. Red LED in the modem inside the PC500/550 should be blinking, indicating that the SIM card is activated. CDMA Modem: Verify that the CDMA modem inside the PC500/550 has been activated by the wireless provider. Refer to Section 5.4 for the activation process. Also, verify that the CDMA modem has been locally activated by pressing the Activate CDMA button on the System Settings page in the Setup menu of the PC500/550 UI. |
| 4337 | SIM Card Not Detected/SIM Card Error | SIM card has not been placed properly in the wireless modem. | Make sure the SIM card is inserted in the correct orientation and fully pushed into the SIM card slot on the PC500/550. |
| 4341 | External Memory Read/Write Error | SD card or USB drive has not been inserted properly. | Verify that the SD card or USB drive is inserted properly into the PC500/550. |
| 4342 | Configured Data Log Storage Device (SD/USB) is Removed | The SD card or USB drive has been removed from the PC500/550 while the storage device was in use. | 1. Make sure that if SD card or USB drive is selected as the storage method in the UI, that there is an SD card or USB drive inserted into the PC500/550. 2. Verify that the SD card or USB drive is inserted properly into the PC500/550. 3. On the Data Log Preferences page in the Setup menu of the PC500/550 UI, verify that SD Storage or USB Storage has been selected as the memory device for data log storage. 4. If the problem persists, reselect SD Storage by first selecting and saving Internal Storage as the memory device for data log storage, then select and save the SD Storage option. 5. If the problem is not corrected, replace the SD card. 6. If the problem continues, use the Internal Storage option and contact your local distributor. |
| 4343 | Storage Space is Almost Full | Internal memory of the PC500/550 is being used for data logging and less than 30% of the memory is available. | This event notifies the user that storage space is nearing capacity. No action is required. Once 90% storage capacity is reached, 30% of the oldest data log records are erased. To acknowledge this event from the UI, an external memory device (SD card or USB drive) needs to be used. |
| 4344 | Storage Space is Full | The data logging space on the PC500/550 has reached maximum capacity. | This event notifies the user that storage space has reached maximum capacity and that 30% of the oldest data log records have been deleted. |
| 4351 | AUX102 Not Detected | The AUX102 is configured in the PC500/550 UI but is not physically connected to the AUX101. | Physically connect the AUX102 to the AUX101. |
| 4355 | Software Update Successful | PC500/550 software update was successful. | This event notifies the user that software has been successfully updated. To acknowledge the event and prevent this code from being displayed on the UI System Status bar, select the Event Log page and click on the green check box in the Acknowledge column for this event. This event is moved to the Acknowledged Events tab. |
| 4356 | Software Update Failed | Incorrect software file used to update software on the PC500/550. | Verify that the latest software file from the INCAL website is being uploaded. |
| 4357 | System Error | Corrupted software. | Reset the device. If the fault does not clear, upload the latest software version to the device. If the issue persists, contact your local distributor. Replacement of the device may be required. |
| 4594 | <Sensor> has High Warning | The sensor shown in the event description has reached the preset high warning threshold. | Identify the sensor that is triggering the alarm and take corrective action. |
| 4595 | <Sensor> has Low Warning | The sensor shown in the event description has reached the preset low warning threshold. | Identify the sensor that is triggering the alarm and take corrective action. |
| 4596 | <Sensor> Voltage Above Critical High Threshold | A sensor that is out of specification is being used for this application. | If the sensor is connected to an analog input on the AUX101/102, reference the specifications sheet of the sensor and verify that the specifications are compatible with the AUX101/102 input being used. Compare the specification for each input to the specifications in the AUX101/102 Owner Manual (A030K737). If using an analog input on the PC500/550, make sure that a resistive sensor with a range of 600–2500 Ohms is being used. |
| 4597 | <Sensor> Voltage Below Critical Low Threshold | A sensor that is out of specification is being used for this application. | If the sensor is connected to an analog input on the AUX101/102, reference the specifications sheet of the sensor and verify that the specifications are compatible with the AUX101/102 input being used. Compare the specification for each input to the specifications in the AUX101/102 Owner Manual (A030K737). If using an analog input on the PC500/550, make sure that a resistive sensor with a range of 600–2500 Ohms is being used. |
| 4900 | Fault code 4900 | ||
| 5000 | Device Fault | ||
| 5134 | Unknown Shutdown at Idle | Fuel supply issue | Check that there is a proper supply of fuel to the engine. |
| 5138 | Genset Control Not in Auto | ||
| 5139 | Auto Transfer Switch Not in Auto | ||
| 5141 | Source 1 Connected | ||
| 5142 | Source 2 Connected | ||
| 5143 | Genset Running | ||
| 5144 | Genset Stopped | ||
| 5157 | Low Battery 3 Voltage | ||
| 5158 | Low Battery 4 Voltage | ||
| 5159 | Weak Battery 1 | ||
| 5161 | Weak Battery 2 | ||
| 5162 | Weak Battery 3 | ||
| 5163 | Weak Battery 4 | ||
| 5164 | Battery Charger 2 Failed Fault | ||
| 5165 | Battery Charger 3 Failed Fault | ||
| 5166 | Battery Charger 4 Failed Fault | ||
| 5178 | Crankcase Pressure 2 Data Incorrect | ||
| 5182 | AUX101 0 Input 1 Fault | ||
| 5283 | High Battery 1 Voltage | ||
| 5284 | High Battery 2 Voltage | ||
| 5285 | High Battery 3 Voltage | ||
| 5286 | High Battery 4 Voltage | ||
| 5287 | Starter Air Supply Pressure Low | ||
| 5288 | Starter Air Tank Volume Low | ||
| 5341 | <Sensor> is Active | The contact on the sensor sends a signal to the PC500/550 or AUX101/102 has changed position due to normal operation, indicating that a change has occurred on the system it is sensing. | Identify what the sensor is connected to and take the proper corrective action. |
| 5342 | <Sensor> is Inactive | The action reported by the sensor has been corrected and the sensor is back to a normal state. | No action is necessary. |
| 5365 | Fault Code on Secondary Source (Information that the Fueling Has Been Shifted to Secondary Source) | ||
| 5377 | AUX101-3 Communication Lost Fault | ||
| 5378 | AUX101-4 Communication Lost Fault | ||
| 5397 | L-N Short Circuit Shutdown | ||
| 5398 | L-L Short Circuit Shutdown | ||
| 5399 | AmpSentry Maintenance Mode Active | ||
| 5531 | Cam Position Frequency Mismatch | ||
| 5569 | Engine Combustion (Shutdown) | Intake manifold overpressurization event | Inspect the hose couplings between the compressor outlet and intake manifold; Inspect the hose couplings for damage; Inspect the clamps for damage; Inspect the turbocharger; Externally inspect the turbocharger for damage; Inspect for loose or missing bolts on the compressor housing; Inspect the mixer; Remove the air cleaner and confirm there are no loose pieces within the mixer |
| 5669 | Engine Combustion (Shutdown) | ||
| 6518 | Cold Start Idle Active (Event) | ||
| 6598 | One or more Acknowledged Engine Fault Codes — One or more engine shutdown faults are active | Engine Fault Code active | Using InSite, connect to the engine ECM. Check for active fault codes; Diagnose and repair any active fault codes. Refer to the engine service manual; Clear all engine fault codes. Cycle power to the control |
| 7000 | MANUAL E-STOP | Optional emergency stop button has been activated | Reset the button, cycle power off to the Microturbine for 30 seconds, and turn the power back on; the fault should clear and the system should resume operation. If it does not, call the authorized service provider |
| 7892 | Start Signal Integrity Fail — If "Remote Start Signal" or "Start Signal Integrity Signal" is compromised (wire break/fall, short), genset will start in emergency mode with fault code 7892 active | Open or Short Circuit in Remote Start Signal Wiring | Check for improper wiring or a short/open circuit of a remote start signal from ATS cabinet or Modbus or PCCNet to TB1-11 of base board which is configured to "Remote Start Input". If improper wiring or a short/open circuit is found, correct the wiring |
| 9115 | BATT FAIL — Unrecoverable battery | The battery can no longer hold a charge or has been damaged excessively due to extremely deep discharge | Replace the battery and cycle through the Setup menus to clear the fault. |
| 9115 | Unrecoverable battery fail | The battery can no longer hold a charge or has been damaged excessively due to extremely deep discharge. | Replace the battery and cycle through the Setup menus to clear the fault. |
| 9115 | The red fault LED lights and a brief description of the fault and the numeric fault code is displayed on the digital display. | Clearing Faults: Most displayed faults are cleared by removing the fault. However, faults 379 — OVER CURR, 442 - HIGH BATT VOLT, and 9115 — BATT FAIL can only be cleared by cycling completely through the Setup menus or by powering down the charger after the fault is corrected. | |
| 9801-LLO | Low Oil Pressure Shutdown (LOPKO) | ||
| 9945 | Injector 6 Circuit 2 Error | ||
| 9946 | Injector 5 Circuit 2 Error | ||
| 9947 | Injector 4 Circuit 2 Error | ||
| 9948 | Injector 3 Circuit 2 Error | ||
| 9949 | Injector 2 Circuit 2 Error | ||
| 9951 | Injector 1 Circuit 2 Error | ||
| 9971 | ECM Derate Fault | ||
| 9973 | Watchdog Reset Occurence | ||
| 40012 | This register contains the fault code number of currently active fault. | ||
| 40013 | This register contains the fault type of currently active fault 0=Normal 1=Warning 2=Derate 3=Shutdown with cool down 4=Shutdown. | ||
| 40013 | Most recent Fault or Warning | ||
| 91800ge | Cold Weather Starting Using Starting Fluid | ||
| 00100047 | Fuel Pump Side | ||
| 400040 | Wait-to-Start | Wait for the Wait-to-Start lamp to turn off before starting the engine | |
| 11000252 | Low Oil Pressure | Shut off the engine immediately to avoid damage | |
| *4 | Green RUN lamp lights following engine start-up. | 7. Indicates all engine systems are normal. No corrective action required. | |
| *High engine temperature | High engine temperature shutdown. | Check— a. Coolant level. Replenish if necessary. b. City water cooled sets. Check water flow, valves, etc. c. Check sensor; check thermostat. d. Radiator model, check fan belts, radiator for obstructions, etc. | |
| *High engine temperature light ON | High engine temperature light ON. No shutdown. | 8. Disconnect wire at TB11-31. Light ON after relay reset. Replace engine monitor board. | |
| *High engine temperature shutdown | High engine temperature shutdown. | A. Coolant level. Replenish if necessary. b. City water cooled sets. Check water flow, valves, etc. c. Check sensor; check thermostat. d. Radiator model, check fan belts, radiator for obstructions, etc. | Check— a. Coolant level. Replenish if necessary. b. City water cooled sets. Check water flow, valves, etc. c. Check sensor; check thermostat. d. Radiator model, check fan belts, radiator for obstructions, etc. |
| *Low oil pressure | Low oil pressure shutdown. | Check— a. Oil level. Replenish if necessary. b. Sensor. Faulty sensor will shut down engine. c. Refer to engine service manual for troubleshooting guide for oil system. | |
| *Low oil pressure light ON | Low oil pressure light ON. No shutdown. | 7. Disconnect wire at TB11-30. Light ON after relay reset. Replace engine monitor board. | |
| *Low oil pressure shutdown | Low oil pressure shutdown. | A. Oil level. Replenish if necessary. b. Sensor. Faulty sensor will shut down engine. c. Refer to engine service manual for troubleshooting guide for oil system. | Check— a.. Oil level. Replenish; if necessary. b. Sensor. Faulty sensor will shut down engine. c. Refer to engine service manual for troubleshooting guide for oil system. |
| -01 | Fuel level in coach tanks | Prime genset fuel system | |
| -23 | HIGH COOLANT TEMP | ||
| a | There is no remote circuit signal (12 VDC at auxiliary relay board A28-TB1-6) because fuse F3 on the ECM has blown. | A. Replace the fuse with one of the same type and amp rating (15 A).<br>b. If fuse F3 blows again, find and repair the fault in the remote control circuit, such as a loose wire that may be shorting to ground or a shorted relay coil or other component. See Section 7 for remote connections. | |
| A1F2 | Engine won't crank — F1 or A1F2 open | On units not having a 9-ampere fuse protection on terminal 5, customer wiring errors including reverse battery connections cause A1 F2 and A1 F3 to blow | On units not having a 9-ampere fuse protection on terminal 5, install insulated jumper wire from TB2-18 to TB1-5. Add in-line fuse package #321-0212. Refer to Product Support Bulletin #57 |
| A1F3 | Remote running time meter or generating lamp won't work — A1F3 fuse open | On units not having a 9-ampere fuse protection on terminal 5, customer wiring errors including reverse battery connections cause A1 F2 and A1 F3 to blow | Connect bypass fuse assembly #321-0210 between TB1-2 and TB2-10. Refer to Product Support Bulletin #40 |
| A11 | The engine does not crank in Run mode — Engine monitor board A11 is faulty. (Check fuses F1 and F4 and for B+ at A11-TB1-9 again.) | Engine monitor board A11 is faulty. | Push the Run-Stop-Remote switch to Run and check for battery voltage (24 VDC) at terminal A11-TB1-8. Replace engine monitor board A11 if there is no voltage at A11-TB1-8 but 24 VDC at A11-TB1-9. |
| A11-4 | Overspeed | Check engine manufacturer's manual for troubleshooting guide | |
| A11-5 | Overcrank | Check loss of fuel or ignition failure | |
| A15 | The engine does not crank in Run mode — The Time Delay Start/Stop Module (A15) is malfunctioning. | The Time Delay Start/Stop Module (A15) is malfunctioning. | Check for constant B+ at A15 terminal TB1-4. Check for run signal at ECM TB1-5. Voltage at A15 TB1-6 should be at B+ at the end of the start delay period. Check wiring and connections from A15 TB1-6 to ECM TB1-6. |
| A28 | The engine does not crank in Remote mode — Auxiliary relay board A28 is not functioning properly. | Auxiliary relay board A28 is not functioning properly. | Check for misconnections (see Section 8) or loose connections and replace auxiliary relay board A28 if there is 12 VDC at terminal A28-TB1-6 but not at A28-J2-6. |
| A052J727 (Issue 1) | The screen will display a description of the fault, the numeric fault code, and the hour the fault occurred in total generator set running time (see figure below). | Refer to Section 6.4 on page 60 to diagnose and correct the problem. | |
| AC POWER AVAILABLE | Indicates that commercial AC power is available | ||
| Battle short mode | Shutdown faults are bypassed | Refer to the Control Application Guide or Manual for list of these faults | |
| BF | BF | ||
| BFA | BFA | ||
| blink-blink | Shutdown due to a loss of engine oil pressure | ||
| blink-blink-blink-blink | Cranking exceeded a preset time without starting | ||
| blink-blink-blink-pause-1 to 9 blinks | Service fault | ||
| C1 | No AC voltage (Note: This condition may cause the generator set to stop when the Start switch is released) | Defective capacitor C1 | Check and replace if it is defective. |
| C1 | AC output voltage too low or too high | Defective capacitor C1 | Check and replace if it is defective. |
| CB1 | Circuit Breaker — The standard 25-amp circuit breaker protects the generator AC windings from a short circuit or overload; if an overload occurs, the breaker can be reset after all loads are removed from the genset | ||
| CB1 OPEN | Shutdown because the DC output circuit breaker is Open (off or tripped). (This shutdown is disabled when the control switch is in MANUAL. When the control switch is in AUTO, the genset will start, warm up and then shut down.) | ||
| CB12 | Engine starts but stops when start switch is released | Fault breaker CB12 not completing circuit due to defective breaker | Check continuity through breaker and replace if defective. |
| CB21 | Field breaker (CB21) trips (electronic voltage regulator) | Refer to flow chart F in Generator/Regulator Troubleshooting | |
| CB21 | Field circuit breaker CB21 has TRIPPED | Field circuit breaker CB21 has TRIPPED. | RESET the circuit breaker. If it keeps tripping, troubleshoot according to the chart, Field Circuit Breaker Keeps Tripping. |
| CB21 | No output voltage — Field circuit breaker CB21 has TRIPPED. | Field circuit breaker CB21 has TRIPPED. | RESET the circuit breaker. If it keeps tripping, troubleshoot according to FIELD CIRCUIT BREAKER KEEPS TRIPPING. |
| CB21 | Exciter Circuit Breaker | Are the rotating diodes CR1 through CR6 on the exciter rotor OK? Is the exciter stator winding OK? Is the generator main field winding OK? is the exciter rotor winding OK? Replace CB21 circuit breaker. Test CR21 to method D. Is CR21 OK? Replace CR21. | |
| CB22 | Generator Overheats — Generator overloaded due to defective circuit breaker CB22 | Generator overloaded due to defective circuit breaker CB22 | Replace circuit breaker |
| CHECK ENG | Fault lamp lights but no fault exists. Engine gauges show oil pressure, engine temperature, and frequency (speed) are within normal limits. | The monitor board or a sensor may be at fault. Contact an authorized service center for service. | |
| CHECK ENG | Fault lamp lights. Engine continues to run or is in standby mode. | Indicates the optional low emission air/fuel control has sensed an out-of-specification condition. Contact an authorized service center for service. | |
| Check Engine | ‘Check Engine’ Fault Shutdown | ||
| Code 1 | Engine Over Temperature | ||
| Code 2 | Low Oil Pressure | ||
| Code 3 | Service Check | ||
| Code 4 | Over Crank | ||
| Code 12 | Over Voltage | ||
| Code 13 | Under Voltage | ||
| Code 14 | Over Frequency | ||
| Code 15 | Under Frequency | ||
| Code 19 | Governor Actuator | ||
| CODE 19 | Controller sensed governor actuator circuit open or shorted. | Have unit serviced by an authorized Cummins Onan dealer. | |
| Code 22 | Governor Actuator Overload | ||
| Code 23 | Low Oil Pressure Cutoff Switch | ||
| Code 24 | Faulty Temperature Sender | ||
| Code 27 | Voltage Sense | A. Contact Local Dealer or Distributor | |
| Code 29 | High Battery Voltage | ||
| Code 29 | Indicates that voltage across the battery system is greater than 19 Volts. | A. Check Battery 1. Check battery bank connections and reconnect if necessary so that the 12 Volt batteries serving the generator set are connected in parallel (12 Volt) rather than in series (24 Volt). 2. Select a lower battery boost charge rate. | |
| Code 31 | Over Speed | ||
| Code 32 | Low Cranking Speed | ||
| Code 32 | Indicates that cranking speed is less than 180 RPM for more than 2 seconds. | A. Check Battery 1. Clean and tighten the positive (+) and negative (–) battery cable connections at the battery and at the generator set. 2. Recharge or replace the battery. Refer to the battery manufacturer's recommendations. B. Replace Engine Oil Replace engine oil with oil of proper viscosity for the ambient temperature. NOTICE: High oil viscosity can slow down cranking speed. | |
| Code 35 | Control Card Failure | ||
| Code 35 | Indicates that a microprocessor EEPROM error occurred during self test. | A. Contact Local Dealer or Distributor | |
| Code 36 | Indicates that the engine stopped without receiving a command from the control. | A. Check Fuel Level 1. If fuel level is low, fill the fuel tank. NOTICE: The generator set fuel pickup tube could be higher up in the fuel tank than the vehicle engine pickup. 2. Prime the engine fuel system by positioning the control switch to STOP/PRIME for 30 seconds. B. Check LPG Level Check and fill the LPG container, as necessary. NOTICE: On cold days, the LPG container may have to be kept at least half full to provide the rate of vaporization necessary to keep up with the generator set fuel demand. C. Check Spark Plug(s) 1. Secure the spark plug lead(s) on the spark plug(s). 2. Replace the spark plug(s). | |
| Code 37 | Indicates that the frequency/RPM ratio is wrong. | A. Contact Local Dealer or Distributor | |
| Code 37 | Invalid Generator Set Configuration | ||
| Code 38 | Indicates low power factor loads. | A. Reduce Load Reduce the number of connected appliances, especially air conditioners and battery chargers. (Review load management in Loading the Generator Set.) B. Check Appliances for Proper Operation Have air conditioners and other appliances checked for proper operation. | |
| Code 38 | Over Current (Field Overload) | ||
| Code 41 | Indicates control is unable to sense field or output voltage. | A. Contact Local Dealer or Distributor | |
| Code 42 | Indicates that a microprocessor ROM error occurred during self test. | A. Contact Local Dealer or Distributor | |
| Code 43 | Indicates that a microprocessor RAM error occurred during self test. | A. Contact Local Dealer or Distributor | |
| Code 45 | Indicates the control is unable to sense quadrature frequency. | A. Contact Local Dealer or Distributor | |
| Code 47 | Indicates the control is unable to sense ignition. | A. Contact Local Dealer or Distributor | |
| Code 48 | Indicates the control is unable to sense field voltage. | A. Contact Local Dealer or Distributor | |
| Code 81 | Exhaust Gas Temperature Sensor Open | Contact Local Dealer or Distributor | |
| Code 82 | Exhaust Gas Temperature Sensor Shorted | Contact Local Dealer or Distributor | |
| Code 135 | Oil Pressure Sensor OOR High | ||
| Code 141 | Oil Pressure Sensor OOR Low | ||
| Code 143 | Low Oil Rifle Pressure | ||
| Code 144 | Engine Coolant Temperature OOR High | ||
| Code 144 | - Engine coolant temperature out of range low (warning) | ||
| Code 145 | Engine Coolant Temperature OOR Low | ||
| Code 146 | Engine Coolant Temperature Moderately Above Normal | ||
| Code 151 | Engine Coolant Temperature High - Critical | ||
| Code 153 | Intake Manifold Temperature OOR - High | ||
| Code 154 | Intake Manifold Temperature OOR - Low | ||
| Code 155 | Intake Manifold Temperature High - Critical | ||
| Code 197 | Low Coolant Level | ||
| CODE 197/235 | LOW COOLANT LEVEL (WARNING/SHUTDOWN) | ||
| Code 212 | Engine Oil Temperature OOR High | ||
| Code 213 | Engine Oil Temperature OOR Low | ||
| Code 214 | Engine Oil Temperature High - Critical | ||
| Code 234 | Engine Speed High - Critical | ||
| Code 236 | Engine Speed/Position Sensor Circuit | ||
| Code 319 | Real-Time Clock Backup Battery – Very Low Voltage | ||
| Code 359 | Fail To Start | ||
| Code 415 | Engine Oil Pressure Low - Critical | ||
| Code 421 | Engine Oil Temperature Moderately Above Normal | ||
| CODE 427 | CAN DATALINK LOST MESSAGES (WARNING) | ||
| Code 427 | CAN Data Link Degraded | ||
| CODE 441 | LOW BATTERY VOLTAGE (WARNING) | ||
| Code 441 | Low Battery Voltage | ||
| CODE 442 | HIGH BATTERY VOLTAGE (WARNING) | ||
| Code 442 | High Battery Voltage | ||
| Code 488 | Intake Manifold Temperature Moderately Above Normal | ||
| Code 611 | Engine Hot Shut Down | ||
| Code 762 | Real-Time Clock Backup Battery Voltage Above Normal Operating Range | ||
| Code 763 | Real-Time Clock Backup Battery Voltage Below Normal Operating Range | ||
| CODE 781 | CAN DATALINK FAILED (SHUTDOWN) | ||
| Code 781 | The ECM CAN Datalink Has Failed | ||
| Code 1121 | Fail To Disconnect | ||
| Code 1122 | Delayed Rated To Idle Transition | ||
| Code 1124 | Delayed Shutdown | ||
| Code 1131 | Battle Short Active | ||
| Code 1132 | Controlled Shutdown | ||
| Code 1219 | Utility CB Tripped | ||
| Code 1223 | Utility Frequency Error | ||
| Code 1224 | High Genset Voltage | ||
| Code 1225 | Low Genset Voltage | ||
| Code 1226 | Genset Frequency Error | ||
| Code 1243 | Engine Derated | ||
| Code 1244 | Engine Normal Shutdown | ||
| CODE 1245 | CAN ENGINE SHUTDOWN (SHUTDOWN) | ||
| Code 1245 | Engine Shutdown Fault | ||
| CODE 1311, 1312, 1317, 1318 | Customer input (WARNING/shutdown) | ||
| Code 1417 | Power Down Error | Possible drain on battery. Contact an authorized service center for service. | |
| Code 1433 | Emergency Stop | Indicates local Emergency Stop. To reset the local/remote Emergency Stop button: 1. Pull the button out. 2. Move the O/Manual/Auto switch to O. 3. Press the front panel Fault Acknowledge/Reset button. 4. Select Manual or Auto, as required. | |
| Code 1434 | Remote E-Stop | Indicates remote Emergency Stop. See code 1433 to reset. | |
| Code 1435 | Low Coolant Temp | Generator set is not operating. This warning occurs when the engine coolant temperature is 70o F (21o C) or lower. In applications where the ambient temperature falls below 40o F (4o C), Low Coolant Temp may be indicated even though the coolant heaters are operating. | Indicates engine coolant heater is not operating or is not circulating coolant. Check for the following conditions: 1. Coolant heater not connected to power supply. Check for blown fuse or disconnected heater cord and correct as required. 2. Check for low coolant level and replenish if required. Look for possible coolant leakage points and repair as required. |
| CODE 1438 | FAIL TO CRANK (SHUTDOWN) | ||
| Code 1438 | Fail To Crank | Indicates possible fault with control, speed sensing or starting system. See code 441 for corrective action. | |
| CODE 1442 | WEAK BATTERY (WARNING) | ||
| Code 1442 | Weak Battery | Indicates that during cranking, the battery voltage is at or below the weak battery warning trip point for a time greater than or equal to the weak battery set time. See code 441 for corrective action. | |
| CODE 1443 | BATTERY FAILED (SHUTDOWN) | ||
| Code 1443 | Battery Failed | Dead battery - engine will not start. See code 441 for corrective action. | |
| CODE 1444 | KW OVERLOAD (WARNING) | ||
| CODE 1445 | SHORT CIRCUIT (SHUTDOWN) | ||
| CODE 1446 | HIGH AC VOLTAGE (SHUTDOWN) | ||
| CODE 1447 | LOW AC VOLTAGE (SHUTDOWN) | ||
| CODE 1448 | UNDER FREQUENCY (SHUTDOWN) | ||
| Code 1448 | Under Frequency | Indicates possible fuel system problem or overload condition. 1. Check for dirty or plugged air filter and replace if necessary (see Maintenance section). 2. Check operation by disconnecting load and restarting generator set. 3. Fuel system requires adjustment. Contact an authorized service center for service. 4. Fuel delivery to the set is inadequate. Contact an authorized service center for service. 5. Reset the control and restart after correcting the problem. | |
| CODE 1449 | OVER FREQUENCY (warning) | ||
| CODE 1471/1472 | OVER CURRENT (WARNING/SHUTDOWN) | ||
| Code 2342 | Too Long in Idle | Indicates the generator set has been in Idle mode too long (10 minutes maximum). | |
| Code 4332 | Loss of Communication with (device) on Channel 1 or 2 | ||
| Code 4333 | Fail to Send SMS Notification | ||
| Code 4337 | SIM Card Not Detected/SIM Card Error | ||
| Code 4341 | External Memory Read/Write Error | ||
| Code 4342 | Configured Data Log Storage Device (SD/USB) is Removed | ||
| Code 4343 | Storage Space is Almost Full | ||
| Code 4344 | Storage Space is Full | ||
| Code 4351 | AUX102 Not Detected | ||
| Code 4355 | Software Update Successful | ||
| Code 4356 | Software Update Failed | ||
| Code 4357 | System Error | ||
| Code 4594 | <Sensor> has High Warning | ||
| Code 4595 | <Sensor> has Low Warning | ||
| Code 4596 | <Sensor> Voltage Above Critical High Threshold | ||
| Code 4597 | <Sensor> Voltage Below Critical Low Threshold | ||
| Code 5138 | Genset Control Not in Auto | ||
| Code 5139 | Auto Transfer Switch Not in Auto | ||
| Code 5141 | Source 1 Connected | ||
| Code 5142 | Source 2 Connected | ||
| Code 5143 | Genset Running | ||
| Code 5144 | Genset Stopped | ||
| Code 5341 | <Sensor> is Active | ||
| Code 5342 | <Sensor> is Inactive | ||
| Code No. 1 | Code No. 1 - High Engine Temperature | Engine coolant temperature exceed design limit | Add coolant as necessary and repair leaks (Page 18); Replace the engine thermostat, which might not be opening fully (Page 21); Clean the raw water tubes in the heat exchanger, which might be clogged with scale (Page 22); Flush the coolant system to remove coolant passage fouling (Page 18). |
| CODE NO. 1 | HIGH ENGINE TEMPERATURE—First-level shutdown—Engine coolant temperature exceed design limit | 1. Add coolant as necessary and repair leaks (Page 17). 2. Replace the engine thermostat, which might not be opening fully (Page 19). 3. Clean the raw water tubes in the heat exchanger, which might be clogged with scale (Page 22). | |
| Code No. 2 | Code No. 2 - Low Oil Pressure | Low oil pressure | Add engine oil or drain excess oil, as necessary (Page 14). |
| CODE NO. 2 | LOW OIL PRESSURE—First-level shutdown—Low oil pressure | 1. Add engine oil as necessary (Page 13). 2. Drain excess oil (above top bead on dipstick). | |
| Code No. 3 | Code No. 3 - Service Check | Presence of second-level shutdown | Check the second-level shutdown code by pressing STOP once. The second-level shutdown code will have two-digits. The shutdowns are listed below in numerical order. |
| CODE NO. 3 | SERVICE CHECK—First-level shutdown—Indicates presence of second-level shutdown | Check the second-level shutdown code by pressing STOP once. The second-level shutdown code will have two-digits. The shutdowns are listed below in numerical order. | |
| CODE NO. 3 | 100 HOUR MAINTENANCE ALERT—CODE NO. 3 | Perform the required maintenance according to Periodic Maintenance. The alert can only be reset by means of a software command via network or PC. See your authorized Onan dealer. | |
| Code No. 4 | Code No. 4 - Overcrank | Cranking exceeded 20 to 60 seconds [temperature dependent] without start | Check the fuel tank and fill as necessary. (Note: The arrangement of pickup tubes in the fuel supply tank probably is such that the genset will run out of fuel before the propulsion engines.); Open any closed fuel valves.; Remove any blockage in the combustion air inlet (front grille) or exhaust system.; Tighten loose fuel line fittings so that air cannot be drawn in by genset lift pump suction.; Drain and/or replace the fuel filter (Page 16) and prime the fuel system (Page 8).; Drain and/or replace fuel supply system filters and prime the fuel system (Page 8). |
| Code No. 4 | Code No. 4: blink-blink-blink-blink | ||
| CODE NO. 4 | OVERCRANK—First-level shutdown—Cranking exceeded 20 to 60 seconds [temperature dependent] without start | 1. Check the fuel tank and fill as necessary. (Note: The arrangement of pickup tubes in the fuel supply tank probably is such that the genset will run out of fuel before the propulsion engines.) 2. Open any closed fuel valves. 3. Remove any blockage in the combustion air inlet (lower rear of left side) or exhaust system. 4. Tighten loose fuel line fittings so that air cannot be drawn in by genset lift pump suction. 5. Drain the fuel filter of water and sediment (Page 15) and prime the fuel system (Page 8). 6. Drain and/or replace fuel supply system filters and prime the fuel system (Page 8). | |
| CODE NO. 4 | LOW OIL LEVEL ALERT—CODE NO. 4 | Check the engine oil level and add oil as necessary. Repair oil leaks. | |
| Code No. 5 | Code No. 5 - Warning Shutdown due to CO | ||
| CODE NO. 5 | FAILURE TO START FAULT SHUTDOWN—CODE NO. 5 | Corrective Action—Engine Does Not Crank: 1. Replace Fuse F2 if blown. 2. Clean and tighten the positive (+) and negative (–) battery cable connections at the battery and at the genset (Page 8). 3. Recharge or replace the battery. Refer to the battery manufacturer’s recommendations. Corrective Action—Engine Cranks But Does Not Start: 1. Open any closed fuel shutoff valve. 2. Fill the LPG fuel tank if less than half full. On cold days the LPG container may have to be kept at least half full to provide the rate of vaporization required to keep up with genset fuel demand. LPG with more than 2.5 percent butane will not vaporize below 32° F (0° C). Use HD-5 grade LPG. 3. Secure the spark plug cables at the spark plugs and at the ignition coil. 4. Make sure the governor rod is not hanging up on the spark plug cable (Page 8). 5. Check for proper fuel selection and change if necessary (Page 6). 6. Check the engine air filter and remove any blockage. 7. Check for a blocked exhaust system and service as necessary. 8. Replace the spark plugs and/or spark plug cables. | |
| CODE NO. 6 | CONTROL SWITCH OFF ALERT—CODE NO. 6 | ||
| Code No. 7 | Code No. 7 - Loss of Raw Water Flow | Low raw water pressure in heat exchanger | Open the sea cock.; Close the sea cock and clean the sea water strainer. If the strainer is above the water line, fill it with water to assist priming. Secure the strainer cover and reopen the sea cock.; Reconnect or replace any disconnected or leaking raw water hoses (Page 19).; Remove any blockage from the strainer on the through-hull fitting on the bottom side of the hull.; Replace the raw water impeller (Page 23). |
| CODE NO. 7 | LOSS OF RAW WATER FLOW—First-level shutdown—Low raw water pressure in heat exchanger | 1. Open the sea cock all the way. 2. Close the sea cock and clean the sea water strainer. If the strainer is above the water line, fill it with water to assist priming. Secure the strainer cover and reopen the sea cock. 3. Reconnect or replace any disconnected or leaking raw water hoses (Page 17). 4. Remove any blockage from the strainer on the through-hull fitting on the bottom side of the hull. 5. Replace the raw water impeller (Page 20). | |
| CODE NO. 7 | LOSS OF UTILITY POWER ALERT | Verify that the genset is supplying the load. | |
| CODE NO. 8 | CABINET FAULT ALERT | Service the fault as necessary. | |
| CODE NO. 9 | LOW GAS SUPPLY PRESSURE ALERT | 1. Open all shutoff valves in the fuel supply line. 2. Fill the LPG container. On cold days the LPG container may have to be kept at least half full to provide the rate of vaporization required to keep up with genset fuel demand. LPG with more than 2.5 percent butane will not vaporize below 32° F (0° C). Use HD-5 grade LPG. | |
| Code No. 12 | Code No. 12 - High AC Voltage | ||
| Code No. 12 | Overvoltage (controller unable to maintain rated voltage) | Controller unable to maintain rated voltage | See an authorized Onan dealer. |
| CODE NO. 12 | OVERVOLTAGE SHUTDOWN—Controller unable to maintain rated voltage | Corrective Action: See an authorized Onan dealer. | |
| Code No. 13 | Code No. 13 - Low AC Voltage | ||
| Code No. 13 | Undervoltage (controller unable to maintain rated voltage) | Controller unable to maintain rated voltage | Reduce the number of connected appliances, especially when air conditioners and battery chargers are running. |
| CODE NO. 13 | UNDERVOLTAGE SHUTDOWN—Controller unable to maintain rated voltage | Corrective Action: Reduce the number of connected appliances, especially when air conditioners and battery chargers are running. | |
| Code No. 14 | Code No. 14 - High AC Frequency | ||
| Code No. 14 | Overfrequency (engine governor unable to maintain rated frequency) | Engine governor unable to maintain rated frequency | If the line circuit breaker or any other circuit breaker has tripped, start the genset before resetting the breaker. (Frequency can overshoot when a circuit breaker trips under load.) If the genset continues to run, turn off or disconnect all loads, reset the breaker and bring the loads on one at a time without overloading the genset.; Tighten loose fuel line fittings so that air cannot be drawn in by genset lift pump suction.; Prime the fuel system to remove air in the fuel lines (Page 8). |
| CODE NO. 14 | After the starter was engaged Frequency jumped to more than 70 Hz for 40 milliseconds or to more than 2% over nominal for 6 seconds | 1. Check for a tripped generator set circuit breaker, reset if necessary, and run with fewer loads. (A breaker tripping under load can cause generator set frequency to overshoot.) 2. Check all fuel fittings and filters for fuel and air leaks and tighten as necessary. (Air bubbles can disrupt frequency.) | |
| CODE NO. 14 | OVERFREQUENCY SHUTDOWN—Engine governor unable to maintain rated frequency | Corrective Action: See an authorized Onan dealer. | |
| Code No. 15 | Code No. 15 - Low AC Frequency | ||
| Code No. 15 | Underfrequency (engine governor unable to maintain rated frequency) | Engine governor unable to maintain rated frequency | Reduce the number of appliances running at the same time, especially those with high motor starting loads such as air conditioners.; Check the fuel tank and fill as necessary. (Note: The arrangement of pickup tubes in the fuel supply tank probably is such that the genset will run out of fuel before the propulsion engines.); Remove any blockage in the combustion air inlet (front grille) or exhaust system.; Tighten loose fuel line fittings so that air cannot be drawn in by genset lift pump suction.; Drain and/or replace the fuel filter (Page 16) and prime the fuel system (Page 8).; Drain and/or replace fuel supply system filters and prime the fuel system (Page 8). |
| CODE NO. 15 | During normal operation Frequency fell to less than 90% of nominal for more than 8 seconds | 1. Push the generator set line circuit breaker OFF and de-energize the PTO clutch, if so equipped. If the generator set now runs, reduce the number of electrical and mechanical (PTO) loads, especially those with high motor starting loads, such as air conditioners. 2. Check the fuel tank and fill as necessary. (Note: The arrangement of pickup tubes in the fuel supply tank probably is such that the generator set will run out of fuel before the propulsion engines.) 3. Prime the engine fuel system for at least 30 seconds (p. 3-3). 4. Remove combustion air or exhaust system blockages. 5. Check all fuel fittings for fuel and air leaks and tighten as necessary. (Air bubbles can disrupt frequency.) 6. Replace fuel filters (p. 4-6). 7. Check for contaminated fuel by connecting to a source of known fuel quality. | |
| CODE NO. 15 | UNDERFREQUENCY SHUTDOWN—Engine governor unable to maintain rated frequency | Corrective Action: Reduce the number of connected appliances, especially when air conditioners and battery chargers are running. | |
| Code No. 16 | Engine Fault | Above Normal | |
| Code No. 17 | Over-prime (prime mode exceed 5 minutes) | Prime mode exceed 5 minutes | Check for and remove any object that may be holding either control switch (remote or local) in the prime position. |
| CODE NO. 17 | ENGINE ACCESSORY FAULT SHUTDOWN | See the Service Manual. | |
| CODE NO. 19 | GOVERNOR ACTUATOR SHUTDOWN—Controller sensed open or shorted circuit | Corrective Action: See an authorized Onan dealer. | |
| Code No. 22 | Code No. 22 - Governor Overload | ||
| Code No. 22 | Governor overload (maximum allowable time at full-duty cycle was exceeded) | Maximum allowable time at full-duty cycle was exceeded | Reduce the number of appliances running at the same time, especially those with high motor starting loads such as air conditioners.; Check the fuel tank and fill as necessary. (Note: The arrangement of pickup tubes in the fuel supply tank probably is such that the genset will run out of fuel before the propulsion engines.); Remove any blockage in the combustion air inlet (front grille) or exhaust system.; Tighten loose fuel line fittings so that air cannot be drawn in by genset lift pump suction.; Drain and/or replace the fuel filter (Page 16) and prime the fuel system (Page 8).; Drain and/or replace fuel supply system filters and prime the fuel system (Page 8). |
| CODE NO. 22 | Maximum allowable time at full-duty cycle was exceeded | 1. Reduce the number of appliances running at the same time, especially those with high motor starting loads such as air conditioners. 2. Check the fuel tank and fill as necessary. (Note: The arrangement of pickup tubes in the fuel supply tank probably is such that the generator set will run out of fuel before the propulsion engines.) 3. Remove combustion air or exhaust system blockages. 4. Check all fuel fittings for fuel and air leaks and tighten as necessary. 5. Replace fuel filters (p. 4-6). 6. Check for contaminated fuel by connecting to a source of known fuel quality. | |
| CODE NO. 22 | GOVERNOR ACTUATOR OVERLOAD SHUTDOWN—Duration of operation at or near full-duty cycle beyond design limit | 1. Reduce the number of connected appliances, especially when air conditioners and battery chargers are running. 2. Service the air cleaner (Page 19). 3. Check for and repair a blocked exhaust system. | |
| CODE NO. 22 | Due to connected overload or low engine performance, the Controller maintained the governor actuator at full-duty cycle—maximum pulse-width-modulated square-wave signal [PWM]—for 60 consecutive seconds | 1. Reduce the number of appliances running at the same time, especially those with high motor starting loads such as air conditioners. 2. Check all fuel fittings for fuel and air leaks and tighten as necessary. Reprime. 3. Replace the engine air filter and clean the spark-arrest muffler (p. 3-4). 4. Replace the fuel filter (p. 3-6). | |
| Code No. 23 | Code No. 23 - Faulty Oil Pressure Sender | Controller sensed grounded sender | See an authorized Onan dealer. |
| CODE NO. 23 | LOW OIL PRESSURE CUTOFF SWITCH SHUTDOWN—Controller sensed switch still open during start—not a running fault | Corrective Action: See an authorized Onan dealer. | |
| CODE NO. 23 | LOW OIL PRESSURE CUTOFF SWITCH FAULT ALERT | See the Service Manual. | |
| Code No. 24 | Code No. 24 - Faulty Temperature Sender | ||
| Code No. 24 | Faulty temperature sender (controller sensed open sender) | Controller sensed open sender | See an authorized Onan dealer. |
| CODE NO. 24 | TEMPERATURE SENDER FAULT ALERT | See the Service Manual. (Note that under this condition the controller will limit genset output to 3.5 kW.) | |
| Code No. 27 | Code No. 27 - Loss of AC Voltage Sense | ||
| Code No. 27 | Loss of voltage sense (controller unable to sense output voltage) | Controller unable to sense output voltage | See an authorized Onan dealer. |
| CODE NO. 27 | VOLTAGE SENSE SHUTDOWN—Controller unable to sense output voltage | Corrective Action: See an authorized Onan dealer. | |
| Code No. 29 | Code No. 29 - High Battery Voltage | ||
| Code No. 29 | High battery voltage (battery system at more than 19.2 volts if 12 VDC system, or 38.4 volts if 24 volt system) | Battery system at more than 19.2 volts if 12 VDC system, or 38.4 volts if 24 volt system | Check battery bank connections and reconnect if necessary to supply 12 volts or 24 volts, as appropriate.; Select a lower battery boost charge rate. |
| CODE NO. 29 | HIGH BATTERY VOLTAGE SHUTDOWN—Voltage across battery system greater than 19 volts | 1. Check battery bank connections and reconnect if necessary so that the 12 volt batteries serving the genset are connected in parallel (12 volt) rather than in series (24 volt). 2. Select a lower battery boost charge rate. | |
| CODE NO. 31 | OVERSPEED SHUTDOWN—Engine speed greater than 3400 rpm | Corrective Action: See an authorized Onan dealer. | |
| CODE NO. 32 | LOW CRANKING SPEED FAULT—Cranking speed less than 180 rpm for more than 2 seconds | 1. Clean and tighten the positive (+) and negative (−) battery cable connections at the battery and at the genset. 2. Recharge or replace the battery. Refer to the battery manufacturer’s recommendations. 3. Replace engine oil with oil of proper viscosity for ambient temperatures (Page 7). (High oil viscosity can slow down cranking speed.) | |
| Code No. 32 | Code No. 32 - Starting Fault | ||
| CODE NO. 34 | HIGH ENGINE TEMPERATURE ALERT | 1. Check for and remove any objects blocking the air inlet or outlet openings. 2. Reduce the electrical load. (Note that high altitude and high ambient temperature decrease engine cooling capacity.) 3. Clean the engine cooling fins and blower blades. See Periodic Maintenance. | |
| CODE NO. 35 | CONTROL CARD FAILURE FAULT—Microprocessor EEPROM error during self-test | See an authorized Onan dealer. | |
| Code No. 35 | Control card failure (microprocessor EEPROM error during self-test) | Microprocessor EEPROM error during self-test | See an authorized Onan dealer. |
| CODE NO. 36 | ENGINE STOPPED FAULT—Engine stopped without command by controller | 1. Check and fill the fuel tank, as necessary. (Note: The genset fuel pickup is probably higher than the boat engine pickup.) 2. Secure the spark plug lead on the spark plug (Page 20). 3. Replace the spark plug (Page 20). 4. Service the air cleaner (Page 19). 5. Check for mechanical damage. | |
| Code No. 36 | Engine stopped (engine stopped without command by controller) | Engine stopped without command by controller | Open any closed fuel supply valves.; Check the fuel tank and fill as necessary. (Note: The arrangement of pickup tubes in the fuel supply tank probably is such that the genset will run out of fuel before the propulsion engines.); Check for mechanical damage and service as necessary.; Remove any blockage in the combustion air inlet (front grille) or exhaust system.; Tighten loose fuel line fittings so that air cannot be drawn in by genset lift pump suction.; Drain and/or replace the fuel filter (Page 16) and prime the fuel system (Page 8).; Drain and/or replace fuel supply system filters and prime the fuel system (Page 8). |
| CODE NO. 37 | INVALID GENSET CONFIGURATION FAULT—Genset configuration is preprogrammed at the factory | See an authorized Onan dealer. | |
| CODE NO. 37 | INVALID GENSET CONFIGURATION SHUTDOWN—Wrong frequency/rpm ratio | Corrective Action: See an authorized Onan dealer. | |
| CODE NO. 37 | INVALID GENSET CONFIGURATION—There was a memory error in the microprocessor during self-test | See an authorized Onan dealer. | |
| CODE NO. 37 | INVALID SET CONFIGURATION ALERT | See your authorized Onan dealer. Special software and a PC are required to re-configure the controller. | |
| Code No. 37 | Invalid genset configuration (controller cannot determine genset operating parameters) | Controller cannot determine genset operating parameters | See an authorized Onan dealer. |
| CODE NO. 38 | OVERCURRENT FAULT—Low power factor loads | 1. Reduce the number of appliances running at the same time, especially those with high motor starting loads such as air conditioners. 2. Have air conditioners and other appliances checked for proper operation. (A locked compressor rotor can cause very low power factor.) | |
| Code No. 38 | Field overload (high field voltage induced by high rotor temperature or low power factor loads) | High field voltage induced by high rotor temperature or low power factor loads | Remove blockages to generator air flow at the front inlet grill and right side, if enclosed.; Reduce the number of appliances running at the same time, especially those with high motor starting loads such as air conditioners.; Have air conditioners and other appliances checked for proper operation. (A locked compressor rotor can cause very low power factor.) |
| CODE NO. 39 | WEAK BATTERY ALERT | 1. Clean and tighten the positive (+) and negative (–) battery cable connections at the battery and at the genset. 2. Recharge or replace the battery. Refer to the battery manufacturer’s recommendations. 3. Check for and remove any parasitic loads on the battery. | |
| CODE NO. 41 | GENERATOR ROTOR FAULT—Controller unable to sense field or output voltage | See an authorized Onan dealer. | |
| Code No. 41 | Grounded rotor (F+ grounded) | F+ grounded | See an authorized Onan dealer. |
| CODE NO. 42 | PROCESSOR FAULT—Microprocessor ROM error during self-test | See an authorized Onan dealer. | |
| Code No. 42 | Processor failure (microprocessor ROM error during self-test) | Microprocessor ROM error during self-test | See an authorized Onan dealer. |
| CODE NO. 43 | PROCESSOR FAULT—Microprocessor RAM error during self-test | See an authorized Onan dealer. | |
| Code No. 43 | Processor failure (microprocessor RAM error during self-test) | Microprocessor RAM error during self-test | See an authorized Onan dealer. |
| CODE NO. 45 | SPEED SENSE FAULT—Controller unable to sense quadrature frequency | See an authorized Onan dealer. | |
| CODE NO. 47 | IGNITION FAULT—Controller unable to sense ignition | See an authorized Onan dealer. | |
| CODE NO. 48 | GENERATOR FIELD SENSE FAULT—Controller unable to sense field voltage | See an authorized Onan dealer. | |
| Code No. 48 | Processor failure (controller unable to sense field voltage) | Controller unable to sense field voltage | See an authorized Onan dealer. |
| CODE NO. 51 | PROCESSOR SHUTDOWN—Microprocessor malfunction | Corrective Action: See an authorized Onan dealer. | |
| CODE NO. 52 | FUEL INJECTOR SHUTDOWN—Open or short circuit in fuel injector | (Open or short circuit in fuel injector) | Corrective Action: See an authorized Onan dealer. |
| CODE NO. 54 | MAT SENDER SHUTDOWN | (Open or short circuit in MAT sender) | See an authorized Onan dealer. |
| CODE NO. 56 | MAP SENDER SHUTDOWN | (Open or short circuit in MAP sender) | See an authorized Onan dealer. |
| CODE NO. 57 | OVERPRIME SHUTDOWN | (Prime mode exceeded 3 minutes) | Check for and remove any object that may be holding either control switch (remote or local) in the prime position. |
| Code No. 58 | High exhaust temperature (exhaust temperature exceeded design limits) | Exhaust temperature exceeded design limits | Check for and reconnect or replace any disconnected or leaking raw water hoses (Page 19).; Check for a and replace a worn raw water impeller (Page 23). |
| CODE NO. 58 | Exhaust Gas Temp Shutdown/Fault | (Exhaust gas temperatures reach 650C (1202F) for 2 secs when the set is running) | See an authorized Onan dealer |
| Code No. 59 | Low coolant level (exhaust temperature exceeded design limits) | Exhaust temperature exceeded design limits | Add coolant as necessary and repair leaks (Page 18). |
| Code No. 61 | Emergency shutdown (genset was shut down by a fire suppression system or other external control) | Genset was shut down by a fire suppression system or other external control | Make all necessary repairs to the genset and connected equipment and reset the external control which shut down the genset. |
| COMM POWER FAIL | Indicates that commercial AC power is not available | ||
| Configurable Alarm and Status Inputs | Configurable Alarm and Status Inputs - Power Command 1301 will accept up to two alarm or status inputs (configurable contact closed to ground or open) to indicate customer-specified conditions. The control is programmable for warning, shutdown or | ||
| COOLANT SENDER 213 | Warning lamp lights. MESSAGE: COOLANT SENDER 213 − WARNING | Indicates that the resistance of the coolant temperature sender is out of range. Check the resistance of the sender. Resistance should be 500 to 2k ohms. | |
| CPL | CPL Code | ||
| CR1 | CR1 power rectifier open | Refer to Generator section for testing and service procedures | |
| CR1 | Low battery | Open in charge circuit due to open charging diode (CR1) | Replace CR1. |
| CR1 | No AC voltage (Note: This condition may cause the generator set to stop when the Start switch is released) | Defective CR1 bridge rectifier | Check and replace if it is defective. |
| CR1 | AC output voltage too low or too high | Defective CR1 bridge rectifier | Test rectifier and replace if it is defective. |
| CR1 | Rotating Diode (CR1) | Check continuity between VR21-1 and T7, apply shorting jumper if no continuity. Replace circuit breaker CB21 if necessary. | |
| CR1 through CR6 | The rotating rectifier assembly (diodes CR1 through CR6) is faulty | The rotating rectifier assembly (diodes CR1 through CR6) is faulty. | Shut down the set and check each diode according to Section 5, Servicing the Generator. Service as necessary. |
| CR1 through CR6 | The field circuit breaker keeps tripping | The rotating rectifier assembly (diodes CR1 through CR6) is faulty. | Shut down the set and check each diode according to Section 5, Servicing the Generator. Service as necessary. |
| CR1 through CR6 | No output voltage — The rotating rectifier assembly (diodes CR1 through CR6) is faulty. | The rotating rectifier assembly (diodes CR1 through CR6) is faulty. | Shut down the set and check each diode according to Section 5. Service as necessary. |
| CR2 | Low battery, generator set does not recharge | Defective CR2 bridge rectifier | Test CR2 bridge and replace if defective. |
| CR2 | AC output voltage too low or too high | Defective rectifier CR2 | Check and replace if it is defective. |
| CR2 | Rotating Diode (CR2) | Check continuity between VR21-1 and T7, apply shorting jumper if no continuity. Replace circuit breaker CB21 if necessary. | |
| CR3 | Rotating Diode (CR3) | Check continuity between VR21-1 and T7, apply shorting jumper if no continuity. Replace circuit breaker CB21 if necessary. | |
| CR4 | Defective CR4 bridge rectifier | Test rectifier and replace if defective | |
| CR4 | Open diode in CR4 bridge rectifier — causes low AC output voltage | Test CR4 rectifier and replace if defective | |
| CR4 | Silicon Controlled Rectifier (SCR) 4 | Check continuity between VR21-1 and T7, apply shorting jumper if no continuity. Replace circuit breaker CB21 if necessary. | |
| CR21 | Defective component on CR21 | ||
| CR21 | Rectifier Bridge (CR21) | Check continuity between VR21-1 and T7, apply shorting jumper if no continuity. Replace circuit breaker CB21 if necessary. | |
| Cranking lockout | The control will not allow the starter to attempt to engage or to crank | Not specified in text | |
| CRS | Silicon Controlled Rectifier (SCR) S | Check continuity between VR21-1 and T7, apply shorting jumper if no continuity. Replace circuit breaker CB21 if necessary. | |
| CUSTOMER FAULT 1 | Shutdown lamp lights. MESSAGE: CUSTOMER FAULT 1 260 − SHUTDOWN or GROUND FAULT 261 − SHUTDOWN or DAY TANK 262 − SHUTDOWN or HIGH GEN TEMP 263 − SHUTDOWN | When any one of these customer defined inputs is closed to ground, the corresponding fault message is displayed. The nature of the fault is an optional customer selection. These fault functions can be programmed to initiate a shutdown or a warning. As indicated by the Shutdown lamp, a shutdown response has been preselected. | |
| CUSTOMER FAULT 1 260 | Shutdown lamp lights. MESSAGE: CUSTOMER FAULT 1 260 − SHUTDOWN or GROUND FAULT 261 − SHUTDOWN | When any one of these customer defined inputs is closed to ground, the corresponding fault message is displayed. The nature of the fault is an optional customer selection. These fault functions can be programmed to initiate a shutdown or a warning. As indicated by the Shutdown lamp, a shutdown response has been preselected. | |
| Derate | Output power reduced in response to a fault condition | If operating on an isolated bus, commands issued to reduce load; if in utility parallel mode, active reduction by lowering base load kW | |
| DS12 | Emergency Shutdown | ||
| DS13 | Low Oil Pressure | ||
| DS14 | High Water Temperature | ||
| DS15 | Overspeed | ||
| E | ENGINE MALFUNCTION SHUTDOWN | ||
| E1 | Faulty Pump ON/OFF Solenoid E1 | Test and service as necessary (Page 11). | |
| e008 | No specific name provided for e008 | ||
| E-DEAD STATUS INDICATOR LIGHT | Poor connections, faulty wiring or dead battery | 1. Try starting the genset at the operator’s console if it does not start at the remote panel. 2. Clean and tighten the battery cable connections at the battery and at the genset. 3. Recharge or replace the battery. Refer to the battery manufacturer’s recommendations. | |
| EEPROM ERROR | Shutdown lamp lights. MESSAGE: EEPROM ERROR 250 − SHUTDOWN | Indicates PCC memory error. Data corruption of critical operating parameters. | |
| EEPROM ERROR | Warning lamp lights. MESSAGE: EEPROM ERROR 251 − WARNING or 252 − WARNING | Indicates PCC memory error. Data corruption of noncritical operating parameters. | |
| EEPROM ERROR 250 | Shutdown lamp lights. MESSAGE: EEPROM ERROR 250 − SHUTDOWN | Indicates PCC memory error. Data corruption of critical operating parameters. | |
| EEPROM ERROR 251 | Warning lamp lights. MESSAGE: EEPROM ERROR 251 − WARNING or 252 − WARNING | Indicates PCC memory error. Data corruption of noncritical operating parameters. | |
| Electronic fault codes are active | Engine Speed Surges at.Low or High Idle | For instructions on how to read active fault codes, refer to Diagnostic Fault Codes in Section 1. If fault codes are active, contact a Cummins Authorized Repair Facility. | |
| Electronic fault codes are active | Engine Speed Surges Under Load or in Operating Range | For instructions on how to read active fault codes, refer to Diagnostic Fault Codes in Section 1. If fault codes are active, contact a Cummins Authorized Repair Facility. | |
| Electronic fault codes are active | Engine Starts But Will Not Keep Running | For instructions on how to read active fault codes, refer to Diagnostic Fault Codes in Section 1. If fault codes are active, contact a Cummins Authorized Repair Facility. | |
| Emergency stop | Annunciated whenever either emergency stop signal is received from external switch | ||
| ENG COOLANT SENDER | Shutdown or Warning lamp lights. | Resistance of the coolant temperature sender is out of range. | Contact an authorized service center. |
| ENG TEMP | Hl ENG TEMP lamp lights. Engine shuts down. | Engine has overheated (engine temperature has risen above 215°F/102°C) or coolant level is low. | A. Check coolant level and replenish if low. Look for possible coolant leakage points and repair if necessary. b. Check for obstructions to cooling airflow and correct as necessary. c. Check for a slipping fan belt and tighten if loose. d. Reset control and restart after locating and correcting problem. Contact an authorized service center if none of the above. |
| Engine | Will not crank. | Indicates possible fault with control or starting system. Check for the following conditions: a. Fault lamp on. Correct fault and reset control. b. Poor battery cable connections ... Clean the battery cable terminals and tighten all connections. c. Discharged or defective | |
| Engine Cranks but will not Start | Engine Cranks but will not Start | ||
| ENGINE SHUTDOWN | Shutdown due to something other than annunciated by the other lamps. It could be low oil pressure (GCAB and GCAC) | ||
| ENGINE SPEED TOO Low | Governor incorrectly adjusted | Adjust for proper speed | |
| ENGINE WILL NOT CRANK | *15. Engine will not crank. | A. Fault lamp on. Correct fault and reset control. b. Poor battery cable connections ... Clean the battery cable terminals and tighten all connections. c. Discharged or defective battery; Recharge or replace the battery. d. Contact an Onan dealer or distributor for assistance if none of the above. | |
| ES-1852 | Overload Detector | Shut down the output device | |
| ES-1859-1 | Overvoltage Monitor | Shut down the output device and trip an optional circuit breaker | |
| F | LOW OIL PRESSURE SHUTDOWN | ||
| F1 | Engine won't crank — F1 or A1F2 open | On units not having a 9-ampere fuse protection on terminal 5, customer wiring errors including reverse battery connections cause A1 F2 and A1 F3 to blow | On units not having a 9-ampere in-line F1 fuse protection, solder a wire in place of A1 F1 fuse link on printed circuit board (wire size not important). Add in-line fuse package #321-0212. Refer to Product Support Bulletin #57 |
| F1 | Battery condition meter inoperative | Fuse F1 blown | Replace fuse with equivalent type fuse |
| F1 | Engine cranks but does not start | F1 fuse on control board not OK | Replace with an identical 5-ampere fuse. Correct problem which caused fuse to burn. Note: Remote leads may be shorted or grounded |
| F1 | No AC output or air discharge—engine running — Blown Fuse (F1) | Blown Fuse (F1) | Replace with a 20 amp (yellow) blade-type fuse (Pages A-1 and A-2). If the new fuse blows, check for ground faults in harnesses 338-4084, 338-4085 and 338-4087 and replace as necessary (Pages A-1 and A-2). |
| F1 | Fuse F1 on engine monitor board A11 has blown | Fuse F1 on engine monitor board A11 has blown. | Replace the fuse with one of the same type and amp rating (20 A); If fuse F1 blows again, the wire between A11-TB1-8 and terminal 85 on relay K12 in the control box may be loose and shorting to ground. Repair as necessary; If fuse F1 still blows, replace relay K12. |
| F1 | Fuse F1 in the control box wiring harness has blown | Fuse F1 in the control box wiring harness has blown. | Replace the fuse with one of the same type and amp rating (30 A); If fuse F1 blows again, check for loose wires that may be shorting to ground, including the leads to TB1-3 and A15-TB1-8 (Start/Stop delay module) in the control box and the red/orange leads in the engine wiring harness. Repair as necessary. |
| F1 | Remote running time meter or generator lamp inoperative | Blown fuse (F1) | Replace F1 fuse on control. |
| F1 | B+ fuse (F1) is open — Engine Does Not Crank | B+ fuse (F1) is open | Replace fuse. |
| F1 | Control circuit fuse (5 amp) | Replace fuse F1 on the control panel if it has blown | |
| F1 | Blown fuse F1 (Power Good indicator light out) — No DC Output | Blown fuse F1 | Replace front panel fuse with same type and rating. |
| F1 | Fuse F1 protects wiring to optional remote accessories connected to terminal 5 of the terminal block | ||
| F1 | Fails to crank — Blown fuse (F1) | Blown fuse (F1) | Replace fuse (F1) on control. |
| F1 | Fuse F1 (see Figure 3-4) on ECM has blown (no voltage [B+] at ECM TB1-8) | The wire between ECM TB1-8 and K4-85 may be loose and shorting to ground. | Repair as necessary and replace the fuse with one of the same type and amp rating (20 A). If fuse continues to blow, service or replace the starter, relay K4. |
| F1 | Status Indicator Light Dead | Battery condition; Battery connections; F1 fuse; Connections at the genset; Ground connections | |
| F1 | The engine does not crank in Run mode — Fuse F1 on engine monitor board A11 has blown (no voltage [12VDC] at A11-TB1-8). | Wiring between A11-TB1-8 and terminal 85 on relay K4 (K12, Spec A) may be loose and shorting to ground. | Repair as necessary and replace the fuse with one of the same type and amp rating (20 A). |
| F1 | Battery charger fails to charge | Battery charger fuse F1 in control accessory panel (if equipped with charger) | Check battery charger fuse F1 in control accessory panel (if equipped with charger). Replace if necessary with Buss KTQ1 fuse or equivalent. |
| F1 | Control fuse (ignition and electrically controlled automatic choke) | ||
| F01 | Generator does not start. | Possible causes include low battery voltage, faulty starter motor, or incorrect wiring | Check the battery voltage and ensure it is above 12V. Verify that the fuel supply is adequate and check for any fuel system issues. Refer to the Fault Code Table for further troubleshooting. |
| F2 | Engine cranks but does not start | Fuse F2 in circuit to control terminal 6 blown | Replace fuse |
| F2 | Engine is running - then stops | Fuse F2 in circuit to control terminal 6 blown | Replace fuse |
| F2 | Fuse F2 on engine monitor board A11 has blown | Fuse F2 on engine monitor board A11 has blown. | Replace the fuse with one of the same type and amp rating (20 A); If fuse F2 blows again, either the wire between terminal A11-TB1-10 and emergency stop switch S14 terminal S14-C-1 or between S14-C-2 and relay K11 terminal 85 may be loose and shorting to ground. Repair as necessary; If fuse F2 still blows, replace relay K11. |
| F2 | Cranks but won't start | Blown fuse (F2) | Replace fuse (F2) on control. |
| F2 | Bad relay K4 and/or fuse F2 — Engine Cranks But Does Not Start | Bad relay K4 and/or fuse F2 | Replace relay and/or fuse. |
| F2 | Autochoke/fuel pump fuse (10 amp mini-bayonet) | Replace fuse F2 (side of control panel) if it has blown | |
| F2 | Fuse F2 protects wiring and components of the cranking and ignition circuits; if blown, these functions are disabled | ||
| F2 | Control fuse F2 is open | Overload | Locate cause of overload and correct as required. Replace fuse |
| F2 | Fuse F2 on the ECM has blown | Fuse F2 on the ECM has blown. | Replace fuse with one of the same type and amp rating. If fuse F2 blows again, the wire between ECM TB1-10 and engine block terminal T26, or a wire between terminal T26 and an accessory may be loose or shorting to ground. |
| F2 | Blown fuel pump/autochoke fuse F2 | Replace fuse with same type and rating. If problem persists, see Onan service center | |
| F02 | Generator produces low output power. | Possible causes include clogged air filter, low fuel level, or malfunctioning alternator | Check the air filter for blockage or damage. Verify that the fuel supply is adequate and check for any fuel system issues. Refer to the Fault Code Table for further troubleshooting. |
| F3 | There is no remote circuit signal (12 VDC at A15-TB1-5) because fuse F3 on engine monitor board A11 has blown | Fuse F3 on engine monitor board A11 has blown. | Replace the fuse with one of the same type and amp rating (15 A); If fuse F3 blows again, find and repair the fault in the remote control circuit, such as a loose wire that may be shorting to ground or a shorted relay coil or other component. |
| F3 | Fuse F3 protects the battery charging circuit; if blown, the battery will not receive any charging current, and the carburetor choke will not open and result in poor engine performance after warm-up | ||
| F3 | The engine does not crank in Remote mode — There is no remote circuit signal (12 VDC at auxiliary relay board A28-TB1-6) because fuse F3 on engine monitor board A11 has blown. | Fuse F3 on engine monitor board A11 has blown. | Replace the fuse with one of the same type and amp rating (15 A); If fuse F3 blows again, find and repair the fault in the remote control circuit, such as a loose wire that may be shorting to ground or a shorted relay coil or other component. See Page C-1 for connections to the ATS. |
| F03 | Generator produces excessive noise. | Check the engine oil level and ensure it is within the recommended range. Verify that all components are properly tightened, including bolts and nuts. Refer to the Fault Code Table for further troubleshooting. | |
| F03 | Generator overheats | Possible causes include clogged cooling system, low coolant level, or malfunctioning thermostat | Clean the radiator fins and check for debris blockages. Check the coolant level; top up if necessary. Test the thermostat to ensure it is functioning correctly. Refer to the fault code table for more details. |
| F4 | Fuse F4 on engine monitor board A11 has blown | Fuse F4 on engine monitor board A11 has blown. | Replace the fuse with one of the same type and amp rating (5 A); If fuse F4 blows again, the lead to terminal 3 on switch S12 (Run-Stop-Remote) or to terminal 5 on switch S11 (Lamp Test-Reset−Preheat) or a lead in the indicator lamp (A12) harness or engine gauge (M11 through M16) harness may be loose and shorting to ground. Repair as necessary. |
| F4 | The engine does not crank in Run mode — Fuse F4 on engine monitor board A11 has blown. | The lead to terminal 3 on switch S12 (Run-Stop-Remote) or to terminal 5 on switch S11 (Lamp Test-Reset-Preheat) or a lead in the indicator lamp (A12) harness or engine gauge (M11 through M16) harness may be loose and shorting to ground. | Repair as necessary and replace the fuse with one of the same type and amp rating (5 A). |
| F04 | Generator produces excessive vibration. | Check the engine mounts for any damage or wear. Verify that all components are properly tightened, including bolts and nuts. Refer to the Fault Code Table for further troubleshooting. | |
| F04 | Generator produces excessive noise during operation | Possible causes include loose engine components, worn-out bearings, or malfunctioning muffler | Inspect all moving parts and tighten any loose bolts. Replace worn-out bearings as needed. Check the muffler for damage; replace if necessary. Refer to the fault code table for more details. |
| F05 | Generator produces excessive exhaust smoke. | Check the air filter for blockage or damage. Verify that the fuel supply is adequate and check for any fuel system issues. Refer to the Fault Code Table for further troubleshooting. | |
| F05 | Generator emits black smoke during operation | Possible causes include rich fuel mixture, clogged air filter, or malfunctioning fuel injection system | Adjust the fuel mixture according to the manufacturer’s specifications. Clean or replace the air filter. Inspect and clean the fuel injection system components. Refer to the fault code table for more details. |
| F06 | Generator produces excessive heat. | Check the cooling system for any leaks or blockages. Verify that the coolant level is within the recommended range. Refer to the Fault Code Table for further troubleshooting. | |
| F06 | Generator produces blue smoke during operation | Possible causes include oil dilution, worn-out piston rings, or malfunctioning exhaust valve | Check the oil level; top up if necessary. Inspect the piston rings for wear and replace as needed. Test the exhaust valves to ensure they are functioning correctly. Refer to the fault code table for more details. |
| F07 | Generator produces excessive oil consumption. | Check the engine oil level and ensure it is within the recommended range. Verify that all components are properly tightened, including bolts and nuts. Refer to the Fault Code Table for further troubleshooting. | |
| F07 | Generator produces white smoke during operation | Possible causes include coolant leakage, water in fuel system, or malfunctioning thermostat | Inspect the cooling system for any leaks; repair if necessary. Check the fuel system for signs of water contamination; replace fuel as needed. Test the thermostat to ensure it is functioning correctly. Refer to the fault code table for more details. |
| F08 | Generator produces excessive fuel consumption. | Check the air filter for blockage or damage. Verify that the fuel supply is adequate and check for any fuel system issues. Refer to the Fault Code Table for further troubleshooting. | |
| F11 | Engine does not crank | Control fuse F11 open | Replace fuse (10 ampere). |
| FAIL TO CRANK | Shutdown lamp lights. MESSAGE: FAIL TO CRANK 221 − SHUTDOWN | Indicates possible fault with control or starting system. Check for the following conditions: a. Check fuse F3 on the Engine Interface board. b. Poor battery cable connections. Clean the battery cable terminals and tighten all connections. c. Discharged or defective battery. Recharge or replace the battery. | |
| FAIL TO CRANK | Engine will not crank. | A. Poor battery cable connections. Clean the battery cable terminals and tighten all connections. b. Discharged or defective battery. Recharge or replace the battery. c. Contact an authorized service center for service of starter and starting system. | |
| FAIL TO CRANK 221 | Shutdown lamp lights. Engine stops cranking. MESSAGE: FAIL TO CRANK 221 − SHUTDOWN | Indicates possible fault with control or starting system. Check for the following conditions: a. Check fuse F3 on the Engine Interface board. b. Poor battery cable connections. Clean the battery cable terminals and tighten all connections. c. Discharged or defective battery. Recharge or replace the battery. | |
| FAIL TO CRANK 221 | Engine will not crank. | Possible fault with control or starting system. | A. Poor battery cable connections. Clean the battery cable terminals and tighten all connections. b. Discharged or defective battery. Recharge or replace the battery. c. Contact an authorized service center for service of starter and starting system. |
| FAIL TO CRANK 221 - SHUTDOWN | Shutdown lamp lights. Engine will not crank. MESSAGE: FAIL TO CRANK 221 − SHUTDOWN | A. Poor battery cable connections. Clean the battery cable terminals and tighten all connections. b. Discharged or defective battery. Recharge or replace the battery. c. Contact an authorized service center for service of starter and starting system. | |
| Fail to crank shutdown | Control has signaled starter to crank engine but engine does not rotate | Engine does not rotate | |
| Fail to start (overcrank) shutdown | Control system indicates a fault if the genset fails to start by the completion of the engine crack sequence | Genset fails to start | |
| FAULT | Fault lamp lights but no fault exists. Engine gauges show oil pressure, engine temperature and frequency (speed) are within normal limits. | Reset control. If control will not reset, the monitor board or a sensor may be at fault. Contact an Onan dealer or distributor for service. | |
| FAULT 1 | The FAULT 1 or FAULT 2 fault lamp lights. Engine shuts down immediately, engine runs for several seconds and then shuts down, or engine continues to run | The standard undesignated fault functions are programmed to shut down the set when a fault is sensed. Fault 1 is timed delayed while Fault 2 is immediate. The nature of the fault is an optional selection that is determined when the set installation is designed. The undesignated fault functions may also be programmed for non-shutdown or non-time delay. | Correct fault and reset control. |
| FAULT 1 | FAULT 1 (red) indicates a nondedicated fault. May be selected as a shutdown or non-shutdown, timed or non-timed fault (usually timed shutdown) | ||
| FAULT 1 | Undedicated fault. May be factory programmed as a shutdown or non-shutdown, and as a timed or non-timed fault. | ||
| FAULT 1 | The engine runs until fault shutdown — The FAULT 1 or FAULT 2 lamp comes on when the engine shuts down. (May be specifically labeled.) | The customer has supplied the system fault indication switches; If the shutdown was due to low frequency, the set probably ran out of fuel, or the governor is out of adjustment; If the shutdown was due to over/under voltage, the voltage regulator may be out of adjustment. | Service as required. Either fault can be chosen to display the warning only with the function selection jumpers on the engine monitor board. See Page 5-5. |
| FAULT 1 | An amber warning lamp is on — The FAULT 1 or FAULT 2 lamp comes on during standby. (May be a specifically labeled amber lamp.) | The customer has supplied the system fault indication switches. | Service as required. Either fault can be chosen to display the warning only with the function selection jumpers on the engine monitor board. See Page 5-5. |
| Fault 1 | Fault 1 lamp lit — Over/Under Voltage or Frequency, as dedicated by customer | Over/Under Voltage or Frequency, as dedicated by customer | Refer to Tests and Adjustments section and perform necessary adjustments. Restart unit and monitor gauges. If shutdown was due to over/under voltage, the voltage regulator may require adjustment or is faulty. Refer to Tests and Adjustments section for adjustments, replace if faulty. If shutdown was due to over/under frequency, the engine governor may require adjustment or is faulty. Refer to Tests and Adjustments section for adjustments, replace if faulty. Refer also to generator-related Flow Charts that follow |
| Fault 1 | High Engine Temperature Shutdown | ||
| FAULT 1 (red) | Undedicated fault. May be factory programmed as a shutdown or non-shutdown, and as a timed or non-timed (normally set for timed shutdown). | @ FAULT 1 (red) an undedicated fault. May be factory programmed as a shutdown or non-shutdown, and as a timed or non-timed (normally set for timed shutdown). | |
| FAULT 1 or FAULT 2 | The FAULT 1 or FAULT 2 fault lamp lights. Engine shuts down immediately, engine runs for several seconds and then shuts down, or engine continues to run. | The standard undesignated fault functions are programmed to shut down the set when a fault is sensed. Fault 1 is time delayed while Fault 2 is immediate. The nature of the fault is an optional selection that is determined when the set-installation is designed. The undesignated fault functions may also be programmed for non-shutdown or non-time delay. | |
| FAULT 1 or FAULT 2 | The FAULT 1 or FAULT 2 lamp (may be specifically labeled) comes on when the engine shuts down. | Service as required. (The customer has supplied the system fault indicating switches. By means of selection jumpers, either fault may be chosen to display the warning only. See Section 3, Engine Control.) | |
| FAULT 1 or FAULT 2 | The standard undesignated fault functions are lights; Engine shuts down immediately, programed to shut down the set when a fault is sensed. Fault 1 is time-delayed while Fault 2 is immediate. | ||
| FAULT 2 | The FAULT 1 or FAULT 2 fault lamp lights. Engine shuts down immediately, engine runs for several seconds and then shuts down, or engine continues to run | The standard undesignated fault functions are programmed to shut down the set when a fault is sensed. Fault 1 is timed delayed while Fault 2 is immediate. The nature of the fault is an optional selection that is determined when the set installation is designed. The undesignated fault functions may also be programmed for non-shutdown or non-time delay. | Correct fault and reset control. |
| FAULT 2 | FAULT 2 (red) indicates a nondedicated fault. May be selected as a shutdown or non-shutdown, timed or non-timed fault (usually non-timed shutdown) | ||
| FAULT 2 | Same features as Fault 1 (Normally set for non-timed shutdown). | ||
| FAULT 2 | The engine runs until fault shutdown — The FAULT 1 or FAULT 2 lamp comes on when the engine shuts down. (May be specifically labeled.) | The customer has supplied the system fault indication switches; If the shutdown was due to low frequency, the set probably ran out of fuel, or the governor is out of adjustment; If the shutdown was due to over/under voltage, the voltage regulator may be out of adjustment. | Service as required. Either fault can be chosen to display the warning only with the function selection jumpers on the engine monitor board. See Page 5-5. |
| FAULT 2 | An amber warning lamp is on — The FAULT 1 or FAULT 2 lamp comes on during standby. (May be a specifically labeled amber lamp.) | The customer has supplied the system fault indication switches. | Service as required. Either fault can be chosen to display the warning only with the function selection jumpers on the engine monitor board. See Page 5-5. |
| Fault 2 | Fault 2 lamp lit — Over/Under Voltage or Frequency, as dedicated by customer | Over/Under Voltage or Frequency, as dedicated by customer | Refer to Tests and Adjustments section and perform necessary adjustments. Restart unit and monitor gauges. If shutdown was due to over/under voltage, the voltage regulator may require adjustment or is faulty. Refer to Tests and Adjustments section for adjustments, replace if faulty. If shutdown was due to over/under frequency, the engine governor may require adjustment or is faulty. Refer to Tests and Adjustments section for adjustments, replace if faulty. Refer also to generator-related Flow Charts that follow |
| FAULT 2 (red) | Same features as Fault 1 (normally set for timed shutdown). | @ FAULT 2 (red) same features as Fault 1 (normally set for timed shutdown). | |
| Fault 12 | AC Input Over Voltage | AC input voltage exceeded 135 VAC; Functions such as Charging can distort the genset AC waveform causing the Inverter-Charger to “read high.” | The Inverter-Charger will automatically clear the fault when voltage stabilizes; If this is a recurring problem, have trained and experienced person investigate the power source(s); It could help to add resistive loads (pass through) to the genset to reduce the waveform distortion; Verify AC input voltage with a meter. If it is high when the genset is running, service the genset to attain proper voltage |
| Fault 13 | AC Input Under Voltage | AC input voltage fell below 90 VAC, but not below 45 VAC; On some gensets this fault might appear when the genset has shut down | The Inverter-Charger will automatically clear the fault when voltage stabilizes; If this is a recurring problem, have trained and experienced persons investigate the power source(s); Verify AC input voltage with a meter. If it is low when the genset is running, service the genset to attain proper voltage |
| Fault 14 | AC Input Over Frequency | AC input voltage frequency exceeded 66 Hz | The Inverter-Charger will automatically clear the fault when frequency stabilizes; If this is a recurring problem, have trained and experienced persons investigate the power source(s); Verify AC input frequency with a meter. If it is high when the genset is running, service the genset to attain proper frequency |
| Fault 15 | AC Input Under Frequency | AC input voltage frequency fell below 54 Hz | The Inverter-Charger will automatically clear the fault when frequency stabilizes; If this is a recurring problem, have trained and experienced persons investigate the power source(s); Verify AC input frequency with a meter. If it is low when the genset is running, service the genset to attain proper frequency |
| Fault 24 | Battery Temp Sensor Error | Improper battery temperature sensor connections; Faulty or disconnected temperature sensor | Check for proper battery temperature sensor connections (p. A-3); Conduct a Battery Temperature Sensor Test (p. 42). Note: the Inverter-Charger will continue to function if the temperature sensor is disconnected or faulty, but will not charge as efficiently. It may cause higher battery temperatures, which can reduce the life of the batteries |
| Fault 29 | High Batt Voltage | Battery Voltage exceeded 15.5 VDC (except during equalize charging) | Inspect the batteries |
| Fault 34 | Inverter Over Temp | The Inverter-Charger overheated; Blocked cooling air flow; Fan malfunction; Fault 69, Charger Temp Sensor Error in the fault history | Let it cool down before re-enabling it. Check for and remove anything that might be blocking cooling air flow. The Inverter-Charger compartment must not be used for storage; If the Inverter-Charger continues to shut down on this fault, conduct the Fan Function Test (p. 42); Check Fault History (p. 15) and replace the Inverter-Charger if there is a Fault 69, Charger Temp Sensor Error in the fault history |
| Fault 35 | Inverter Control Failure | Replace the Inverter-Charger | |
| Fault 36 | Genset Failed to Start (Fault after 3 Attempts) | Genset does not start after three attempts | Check the level of fuel in the fuel tank supplying the genset and refill if necessary; Try to start the genset at the Digital Display (p. 12); Check that the genset Start/Stop switches are working. Have the genset serviced if it cannot be started or stopped normally; If the genset can be started and stopped normally, but not by the Digital Display, conduct a Genset Start/Stop Test (p. 41) |
| Fault 38 | Inverter Overload | Shorts in the AC load circuits; Excessive AC loads; Current sense circuit failure | Check for shorts in the AC load circuits and re-enable Inverting; Remove excessive AC loads and re-enable Inverting. Check the inverter output load meter on the Digital Display (Figure 6, p. 9); Check AC output with a meter. If the Display indicates much higher current than the meter, replace the Inverter-Charger, the current sense circuit probably has failed |
| Fault 39 | Low Battery Voltage | Battery voltage was less than 10 VDC for 10 seconds. This is a safety shutdown to protect the batteries from being overly discharged. Enable Low Battery Cut-Out (p. 21) if disabled. | Enable Low Battery Cut-Out (p. 21) if disabled; Connect AC and charge the batteries; If wet cell batteries are being used, perform Equalize Charge (p. 10) to restore full capacity; Have the batteries tested. Replace old, failing batteries (p. 27); Check battery voltage at the Inverter-Charger with a meter. If the Display (p. 11) indicates much low voltage than the meter, replace the Inverter-Charger, the battery voltage sense circuit probably has failed. |
| Fault 42 | Inverter Control Failure | Replace the Inverter-Charger. | |
| Fault 43 | Inverter Control Failure | Replace the Inverter-Charger. | |
| Fault 51 | Inverter Control Failure | Replace the Inverter-Charger. | |
| Fault 58 | High Battery Temp | Battery temperature reached 120° F. Charging was disabled to protect the batteries. Charging at temperatures above 120° F will greatly reduce the life of most types of batteries; A battery cell may have shorted, which can cause battery temperatures to rise rapidly when charging. | Let the batteries cool down before re-enabling the charger. Check for and remove anything that might be blocking cooling air flow in the battery compartment. The battery compartment must not be used for storage; Inspect and replace batteries as necessary; Conduct a Battery Temperature Sensor Test (p. 42). |
| Fault 59 | Inverter Overload | Shorts in the AC load circuits; Excessive AC loads; Current sense circuit probably has failed (if the Display indicates much higher current than the meter); The inrush current of some loads, such as incandescent lights, can be as high as six times normal running current. The Inverter-Charger can handle surge currents of up to three times its rating. Fault 59 might be tripped if a significant number of these high inrush current devices come on at the same time. | Check for shorts in the AC load circuits and re-enable Inverting; Remove excessive AC loads and re-enable Inverting. Check the inverter output load meter on the Digital Display (Figure 6, p. 9); Check AC output with a meter. If the Display indicates much higher current than the meter, replace the Inverter-Charger, the current sense circuit probably has failed; Turning on incandescent lights one at a time after Inverting begins could prevent this fault. |
| Fault 62 | Charger Fault (fan failure) — The Inverter-Charger may continue to supply light Inverting loads, but will not perform Charging as long as it senses this fault. | Fan failure | Conduct a Fan Function Test (p. 42). Replace the fan if necessary; Replace the Inverter-Charger. |
| Fault 63 | Charger Over-Temp | The Inverter-Charger overheated; Something may be blocking cooling air flow; Fan failure; Fault 64, Charger Temp Sensor Error in the fault history. | Let it cool down before re-enabling it. Check for and remove anything that might be blocking cooling air flow. The Inverter-Charger compartment must not be used for storage; If the Inverter-Charger continues to shut down, conduct a Fan Function Test (p. 42); Check Fault History (p. 15) and replace the Inverter-Charger if there is a Fault 64, Charger Temp Sensor Error in the fault history. |
| Fault 64 | Charger Temp Sensor Error | An internal temperature sensor in the Inverter-Charger has failed. | Replace the Inverter-Charger. |
| Fault 65 | Charger Circuit Fault — Inverting may function though Charging and AC Pass-Through are disabled. | To reset the Inverter-Charger, perform the following in order: disconnect all DC loads, disconnect AC power, disconnect the batteries, reconnect the batteries, reconnect AC power, wait 10 seconds, enable Charging. The Charging Indicator Light (p. 4) should come on, indicating HIGH charge; If the fault recurs, replace the Inverter-Charger. | |
| Fault 67 | Inverter Overload | Shorts in the AC load circuits; Excessive AC loads. | Check for shorts in the AC load circuits and re-enable Inverting; Remove excessive AC loads and re-enable Inverting; Replace the Inverter-Charger. |
| Fault 68 | Inverter Overload | Shorts in the AC load circuits; Excessive AC loads. | Check for shorts in the AC load circuits and re-enable Inverting; Remove excessive AC loads and re-enable Inverting; Replace the Inverter-Charger. |
| Fault 69 | Charger Temp Sensor Error | Replace the Inverter-Charger. | |
| Fault 71 | Fault 71 shutdown — the Inverter-Charger limits DC output to 25 amps when it senses less than 2 VDC at its terminals, due either to dead batteries or to being disconnected from the batteries; the shutdown will occur if the batteries begin to draw more than 25 amps | Dead batteries or being disconnected from the batteries causing the batteries to draw more than 25 amps | This is not a failure of the Inverter-Charger but an indication of possible battery recovery |
| Fault 71 | Charger Overload — The Inverter-Charger limits DC output to 25 amps whenever it senses less than 2 volts at its DC terminals—batteries disconnected or in a very low state of charge. | The charger has been overloa | |
| Fault Code | A numeric Cummins code that identifies the fault. | ||
| Fault Code Blinking | Restoring Fault Code Blinking | ||
| Fault Code Table | Status Indicators | ||
| Fault Codes | Specific fault codes appear. | Refer to the Fault Codes section in page 4-4 of this manual for detailed information on each code and recommended actions. | |
| FAULT LAMP | *13. Fault lamp lights but no fault exists. Engine gauges show oil pressure, engine temperature and frequency (speed) are within normal limits. | Reset control. If control will not reset, the monitor board or a sensor may be at fault. Contact an Onan dealer or distributor for service. | |
| Fault Number | ALARM status lamp on the Digital Display will blink and the LCD screen will display the Fault Number, a description of the Fault and the hour in total generator set running time when the Fault occurred (Figure 2-4). The fault will be displayed until it is cleared. Touch any button to clear the fault. The display will turn off in 5 minutes after the fault has been cleared. | See Page 2-6 to display any of the last five faults in fault history. | |
| Fault Number | The amber status lamp on the control switch will repeatedly blink sets of 3, 4, 5 or 7 blinks. | One blink: No fault. Two blinks: Over-speed trip. Three blinks: Low oil pressure trip. Four blinks: High coolant temperature trip. Five blinks: Low fuel level trip. Seven blinks: Generator set shutdown due to a fault. | |
| FC 56 | Last fault FC 56 | Verify that the last fault is FC 56; if yes, continue the diagnosis; if no, troubleshoot the actual last fault; measure P1-17 open to ground on EFI set and ground the lead as required for carburetor configuration; verify ambient pressure is greater than 50 kPa and change altitude; inspect the connector at the sender for looseness and damage and repair or replace the connector as necessary; disconnect generator set control Connector P1; inspect pin condition per PSB-676, found in Product Support Bulletins (603 thru 680) on QSOL, and insert, repair, or replace pins as necessary; reconnect Connector P1 and test run generator set for fault occurrence, repairing or replacing pins in the connector as necessary; measure for continuity across the harness between P1-31 - MAP(A), P1-22 - MAP(B) and P1-30 - MAP(C) and repair or replace the harness as necessary; measure resistance on the sender between MAP(A), MAP(B) and MAP(C) and replace the sender as necessary; measure the fuel pump pressure/flow and replace the fuel filter, pressure regulator or fuel pump as necessary | |
| Four blinks | Shutdown due to a failure to start within the time allowed for cranking. | ||
| G | HIGH WATER TEMPERATURE SHUTDOWN | ||
| GAS HAZARD | Shutdown because of a possible gas leak | ||
| Generator overvoltage | Generator overvoltage. | A. Replace SCR block. b. Replace voltage regulator. | |
| Green RUN | Lamp does not light following engine startup. | Indicates possible Start/Disconnect relay failure. Contact an authorized service center for assistance. | |
| GREEN RUN LAMP | *17. Green RUN lamp does not light following engine start-up. | Indicates possible Start/Disconnect relay failure. Contact an Onan dealer or distributor for assistance. | |
| GROUND FAULT | Warning lamp lights. MESSAGE: CUSTOMER FAULT 1 260 − WARNING or GROUND FAULT | ||
| H | OVERSPEED CONDITION | ||
| H! ENG TEMP | Engine has shut down because of critically high temperature. | ||
| HET | High Engine Temperature | ||
| HI ENG TEMP | *3. HI ENG TEMP lamp lights. Engine shuts down. | Engine has overheated (engine temperature has risen above 227°F/104°C) or coolant level is low (sets with coolant level sensor). | 3. Indicates engine has overheated (engine temperature has risen above 215°F/102°C) or coolant level is low (sets with coolant level sensor). Allow engine to cool down completely before proceeding with the following checks: a. Check coolant level and replenish if low. Look for possible coolant leakage points and repair if necessary. b. Check for obstructions to cooling airflow and correct as necessary. c. Check for a slipping fan belt and tighten if loose. d. Reset control and restart after locating and correcting problem. Contact an Onan Dealer or Distributor if none of the above. |
| HI ENG TEMP | HI ENG TEMP (red) indicates that the engine has shut down because of high coolant temperature or low coolant level (when equipped with a low coolant level switch) | ||
| HI ENG TEMP | Indicates engine has shut down because of critically high temperature. | ||
| HIGH AC VOLTAGE | Shutdown lamp lights. MESSAGE: HIGH AC VOLTAGE 301 − SHUTDOWN | Indicates that one or more of the phase voltages has exceeded 130% of nominal, or has exceeded 110% of nominal for 10 seconds. | |
| HIGH COOLANT TEMP | Shutdown lamp lights. | Allow engine to cool down completely before proceeding with the following checks: a. Check coolant level and replenish if low. Look for coolant leakage and repair if necessary. b. Check for obstructions to cooling airflow and correct as necessary. c. Check fan belt and repair or tighten if necessary. d. Reset control and restart after locating and correcting problem. Contact an authorized service center if none of the above. | |
| HIGH COOLANT TEMP 211 | Warning lamp lights. | Indicates the engine coolant temperature is getting close to the recommended maximum temperature limit: 215°F (102°C) − standby or 207°F (97°C) − primary. If generator is powering non-critical and critical loads and cannot be shut down, use the following: a. Reduce load if possible by turning off non-critical loads. b. Check air inlets and outlets and remove any obstructions to airflow. | |
| HIGH COOLANT TEMP 212 | Shutdown lamp lights. MESSAGE: HIGH COOLANT TEMP 212 − SHUTDOWN | Indicates engine has overheated (coolant temperature has risen above the shutdown trip point: 223° F (106° C) − standby or 215° F (102° C) − prime.) | Allow engine to cool down completely before proceeding with the following checks: a. Check for obstructions to cooling airflow and correct as necessary. b. Check fan belt and repair or tighten if necessary. c. Check coolant mixture. d. Check blower fan and circulation pumps on remote radiator installations. e. Reset control and restart after locating and correcting problem. |
| HIGH COOLANT TEMPERATURE | The coolant temperature switch closes at 250°F (121°C) and actuates the fault circuit. | Check the coolant level in radiator after allowing engine to cool down. Ensure the pump belt is okay and has proper tension. Also check cooling system cleanliness (freedom from contaminants, rust, sludge build-up, etc.). | Check the coolant level in radiator after allowing engine to cool down. Ensure the pump belt is okay and has proper tension. Also check cooling system cleanliness. |
| HIGH DC VOLTAGE | Warning lamp lights. MESSAGE: HIGH DC VOLTAGE 231 − WARNING | A. Check voltage float level on battery charger if applicable (lower float level). b. Check engine DC alternator. Replace engine DC alternator if normal battery charging voltage is not obtained. | |
| HIGH DC VOLTAGE 231 | Warning lamp lights. MESSAGE: HIGH DC VOLTAGE 231 − WARNING | Indicates battery voltage exceeds 32 VDC. Check voltage float level on battery charger if applicable (lower float level). Check engine DC alternator. Replace engine DC alternator if normal battery charging voltage is not obtained. | |
| HIGH DC VOLTAGE 231 - WARNING | Warning lamp lights. MESSAGE: HIGH DC VOLTAGE 231 − WARNING | Contact an authorized service center. | |
| HIGH ENG TEMP | HIGH ENG TEMP lamp lights. Engine shuts down. | Indicates engine has overheated and engine temperature has risen above 215°F (102°C) or coolant level is low (sets with coolant level sensor). Allow engine to cool down completely before proceeding with the following checks: a. Check coolant level and replenish if low. Look for possible coolant leakage points and repair if necessary. b. Check for obstructions to cooling airflow and correct as necessary. c. Check for a slipping fan belt and tighten if loose. d Reset control and restart after locating and correcting problem. Contact an Onan dealer or distributor if none of the above. | |
| high engine coolant temperature | Common fault such as high engine coolant temperature | ||
| High engine temperature | *High engine temperature shutdown. | A. Coolant level. Replenish is necessary. b. City water cooled sets. Check water flow, valves, etc. c. Check sensor; check thermostat. d. Radiator model, check fan belts, radiator for obstructions, etc. | Check coolant level on radiator and heat exchanger sets and replenish if necessary. |
| High Engine Temperature | High engine temperature (higher than 220 ±6°F) | ||
| High engine temperature light ON | High engine temperature light ON, no shutdown | Disconnect wire at TB11-31. Light ON after relay reset. Replace engine monitor board. | |
| High engine temperature shutdown | *High engine temperature shutdown. | Check— a. Coolant level. Replenish if necessary. b. City water cooled sets. Check water flow, valves, etc. c. Check sensor; check thermostat. d. Radiator model, check fan belts, radiator for obstructions, etc. | |
| High Exhaust Temperature | High exhaust temperature (higher than 190 ±9°F) | ||
| high exhaust temperature | Common fault such as high exhaust temperature | ||
| HIGH GEN TEMP | Warning lamp lights. MESSAGE: CUSTOMTER FAULT 1 263 − WARNING or HIGH GEN TEMP | ||
| HIGH OIL | Oil too heavy. | Clean all lines and passages. Replace. | |
| HIGH OIL | Clogged oil passage. | Remove and clean. Replace. | |
| HIGH OIL | Oil relief valve stuck. | Replace. | |
| HIGH OIL PRESSURE | Low engine power (will not reach governed speed) | Check for other causes. Of by-pass stuck closed. Clean. | |
| Hl ENG TEMP | Hl ENG TEMP lamp lights. Engine shuts down. | Engine has overheated (engine temperature has risen above 215°F/102°C) or coolant level is low. | A. Check coolant level and replenish if low. Look for possible coolant leakage points and repair if necessary. b. Check for obstructions to cooling airflow and correct as necessary. c. Check for a slipping fan belt and tighten if loose. d. Reset control and restart after locating and correcting problem. Contact an authorized service center if none of the above. |
| HUNTING CONDITION | GOVERNOR ACTS SLOWLY | Defective breather valve. Clean or replace. Binding in linkage. Clean and lubricate link age. | |
| INVALID CAL | INVALID CAL | The digital board is not properly calibrated for the generator set model | Refer to Digital Board (A32) Calibration in Section 5 |
| INVALID SETUP | INVALID SETUP | The digital board is not properly calibrated for the generator set model | Refer to Digital Board (A32) Calibration in Section 5 |
| K1 | Fuel solenoid K1 is not functioning properly | Fuel solenoid K1 is not functioning properly. | Push the Run-Stop-Remote switch to Run and watch for fuel solenoid K1 to pull in. If it does not, push the Run-Stop-Remote switch to Stop and connect the positive (+) terminal on fuel solenoid K1 to the BAT terminal on the starter solenoid with a jumper wire and the negative (−) terminal to GND. Replace the fuel solenoid if it does not pull in and stay in each time power is connected. |
| K1 | The engine cranks but does not start — Fuel solenoid K1 does not energize. | Fuel solenoid K1 does not energize. | Fuel solenoid not energized by the ECM. Check for B+ at ECM TB1-10 when cranking. If no voltage present and fuse F2 is good replace ECM; Connect B+ to fuel solenoid (K1) terminal BAT. Replace the fuel solenoid if does not “click” when energized. If fuel solenoid is working, check for blocked fuel line or fuel filter. |
| K2 | Cranks but won't start | Faulty crank ignition relay (K2) | Check voltage from relay terminal "4" to ground while cranking unit. Battery voltage should appear at this terminal. If not check for voltage at relay terminals "1" and "2". If battery voltage is present at terminals 1 and 2, but not at 4, replace relay. If no voltage appears at terminals 1 and 2 on relay while cranking, check wiring between start solenoid (K1) and crank ignition relay (K2). |
| K3 | Unit starts, but stops immediately | Run ignition relay K3. | Check voltage on both sides of K3. Should be 12 volts. |
| K4 | Engine Cranks But Does Not Start — Bad relay K4 and/or fuse F2 | Bad relay K4 and/or fuse F2 | Replace relay and/or fuse |
| K4 - Fault 2 | K4 - Fault 2 | ||
| K5 | Generator Set Does Not Stop After Switch Is Pushed to Off | (Spec A sets only) K5 relay not energizing due to open circuit to K5 relay coil | Check for continuity and correct if circuit is open |
| K5 - Fault 1 | K5 - Fault 1 | ||
| K6 | Engine Cranks But Does Not Start — Relay K6 is faulty (Beginning Spec F) | Relay K6 is faulty (Beginning Spec F) | Replace Relay K6 if there is cranking voltage at terminals 87 and 85, but not at terminal 30 when cranking |
| K11 | Relay K11 is faulty. | Push the Run-Stop-Remote switch to Run and check for battery voltage (12 VDC) at relay K11 terminals 85 and 87 while the engine is cranking. Replace relay K11 if there is voltage at terminal 85 but not at terminal 87. | |
| K13 | Relay K13 is not functioning properly | Relay K13 is not functioning properly. | Push the Run-Stop-Remote switch to Run and check for battery voltage (12 VDC) at relay K13 terminals 85 and 30 while the engine is cranking. Replace relay K13 if there is voltage at terminal 85 but not at terminal 30. If there is voltage at terminal 30, check for proper connections of the lead between terminal 87 and terminal TB1-6 on the floor of the control box and the white lead in the engine harness between TB1-6 and the glow plugs. |
| K13 | K13 - HET | ||
| K17 | K17 - PHET | ||
| K19 | K19 - PLOP | ||
| L10 | Fan Idler Pulley End Clearance Out of Specification | Rebuild or replace the fan idler pulley. Refer to Section A for replacement procedures. Refer to Shop Manual, Bulletin No. 3810476, for rebuilding procedures. | |
| Lio | Turbocharger Inspection Required | Inspect the turbocharger. Remove air intake and exhaust piping. Check for damaged or cracked compressor or turbine blades, and ensure shaft spins freely. Contact Cummins Authroized Repair Location if issues are found. | |
| LO ENG TEMP | Indicates engine coolant heater is not operating or is not circulating coolant. | A. Coolant heater not connected to power supply. b. Check for low coolant level and replenish if required. Look for possible coolant leakage points and repair as required. c. Contact an Onan dealer or distributor if none of the above. | A. Coolant heater not connected to power supply. Check for blown fuse or disconnected heater cord and correct as required. b. Check for low coolant level and replenish if required. Look for possible coolant leakage points and repair as required. c. Contact an authorized service center if none of the above. |
| LO ENG TEMP | Lamp lights. Set is in standby mode but is not operating. | Lamp lights when engine coolant temperature is 70° F (28° C) or lower. Since the lamp goes out after the engine warms up, there should be no cause for alarm even during initial generator set operation. | |
| LO ENG TEMP | Engine temperature is marginally low for starting. Indicates inoperative coolant heater, (Lamp lights when engine water jacket temperature is 70°F (21 OC) or lower. Since the lamp goes out after the engine warms up there should be no cause for alarm even during initial generator set operation.) | ||
| LO ENG TEMP lamp lights | Set is in standby mode but is not operating. | Lamp lights when engine coolant temperature is 70° F (21° C) or lower. Since the lamp goes out after the engine warms up, there should be no cause for alarm even during initial generator set operation. | |
| LO FUEL | 8. LO FUEL lamp lights. Engine continues to run....Or to a propane fuel supply (if not already connected). | Move the selector switch on the governor mounting LO FUEL lamp lights. Engine shuts down and LO OIL PRES lamp lights. | |
| LO FUEL | LO FUEL (yellow) can be used to indicate that the fuel supply (pressure) is low and may be set as a warning or as a shutdown. A low pressure switch is available from Onan | ||
| LO FUEL | Fuel supply is marginally low. | ||
| LO FUEL | Engine shuts down and LO OIL PRES lamp lights | Check fuel level and replenish as required... | |
| LO FUEL (Pressure) | LO FUEL (Pressure) lamp lights. Shutdown will occur if unit runs out of fuel. | Install the fuel hose and regulator supplied with the unit and connect to a propane fu | |
| LO OIL PRES | 4, LO OIL PRES lamp lights. Engine shuts down. | Engine oil pressure has dropped to 14 psi (97 kPa). | NOTE: See also step 5. a. Check oil level, lines and filters. If oil system is OK but oil level is low, replenish. Reset control and restart. Contact an authorized service center if oil pressure is not in the range of 40 to 65 psi (275 to 448 kPa). |
| LO OIL PRES | LO OIL PRES (red) indicates that the engine has shut down because of low oil pressure | ||
| LOP | Low Oil Pressure | ||
| loss | Loss of coolant | ||
| LOW AC VOLTAGE | Shutdown lamp lights. MESSAGE: LOW AC VOLTAGE 303 − SHUTDOWN | Indicates that one or more of the phase voltages has dropped below 85% of nominal for 10 seconds. | Indicates that one or more of the phase voltages has |
| Low and high battery voltage warning | Indicates status of battery charging system (failure) | Continuously monitoring battery voltage | |
| Low coolant level warning | Can be set up to be a warning or shutdown | Set up in control | |
| LOW COOLANT LVL | Shutdown lamp lights. MESSAGE: LOW COOLANT LVL 214 − WARNING or LOW COOLANT LVL 215 − SHUTDOWN | Indicates engine coolant level has fallen below the trip point. Allow engine to cool down completely before proceeding. | A. Check coolant level in both radiator and coolant recovery bottle and replenish if low. b. If radiator level is low and coolant bottle level is correct, defective coolant bottle hose or radiator cap. c. Reset control and restart after locating and correcting problem. |
| LOW COOLANT LVL 214 | Shutdown lamp lights. MESSAGE: LOW COOLANT LVL 214 − WARNING or LOW COOLANT LVL 215 − SHUTDOWN | Engine coolant level has fallen below the trip point. | Indicates engine coolant level has fallen below the trip point. Allow engine to cool down completely before proceeding. a. Check coolant level in both radiator and coolant recovery bottle and replenish if low. Look for possible coolant leakage points and repair if necessary. b. Reset control and restart after locating and correcting problem. LOW COOLANT LVL Shutdown will not occur if genset is in Idle mode (low coolant warning only). |
| Low coolant temperature warning | Indicates that engine temperature may not be high enough for a 10 second start or proper load acceptance | Engine temperature is low | |
| LOW CRANK BATT | Indicates that battery charger voltage is marginal (during normal operation) | ||
| LOW DC VOLTAGE | Warning lamp lights. MESSAGE: LOW DC VOLTAGE 230 − WARNING | A. Discharged or defective battery. Check the battery charger fuse. Recharge or replace the battery. b. Poor battery cable connections. Clean the battery cable terminals and tighten all connections. c. Check engine DC alternator. Replace engine DC alternator if normal battery charging voltage is not obtained. d. Check battery charge voltage float level if applicable (raise float level). | |
| LOW DC VOLTAGE 230 | Warning lamp lights. MESSAGE: LOW DC VOLTAGE 230 − WARNING | Indicates battery voltage is below 10 VDC. a. Discharged or defective battery. Check the battery charger fuse. Recharge or replace the battery. b. Poor battery cable connections. Clean the battery cable terminals and tighten all connections. c. Check engine DC alternator. Replace engine DC alternator if normal battery charging voltage is not obtained. d. Check battery charge voltage float level if applicable (raise float level). | |
| LOW DC VOLTAGE 230 - WARNING | Warning lamp lights. MESSAGE: LOW DC VOLTAGE 230 − WARNING | A. Discharged or defective battery. Check the battery charger fuse. Recharge or replace the battery. b. Poor battery cable connections. Clean the battery cable terminals and tighten all connections. c. Contact an authorized service center if none of the above. | |
| LOW ENG TEMP | LOW ENG TEMP (yellow) indicates that engine coolant temperature is marginal for starting (low) | ||
| LOW FUEL | Indicates marginal fuel pressure at the genset | ||
| LOW FUEL 241 | Warning lamp lights. MESSAGE: LOW FUEL 241 − WARNING | Check fuel supply and replenish as required. | |
| LOW FUEL DAY 240 | Warning lamp lights. MESSAGE: LOW FUEL DAY 240 − WARNING | Check fuel supply and replenish as required. | |
| LOW FUEL-DAY | Shutdown lamp lights. MESSAGE: LOW FUEL−DAY 240 − WARNING or LOW FUEL 241 − WARNING | Indicates day tank fuel supply is running low. Check fuel supply and replenish as required. | |
| LOW FUEL-DAY 240 | Shutdown lamp lights. MESSAGE: LOW FUEL−DAY 240 − WARNING or LOW FUEL 241 − WARNING | Indicates day tank fuel supply is running low. Check fuel supply and replenish as required. | |
| Low Oi PRESSURE | Worn bearings | Rebuild engine | |
| Low Oi PRESSURE | Oil by-pass stuck open | Clean by-pass valve | |
| Low Oi PRESSURE | Oil supply low | Check cause: of oil consumption. Governor incorrectly adjusted. | |
| Low Oi PRESSURE | Worn oil pump | Replace pump | |
| Low Oi PRESSURE | Linkage binding | Clean or replace linkage | |
| Low Oi PRESSURE | Defective oil gauge | Replace gauge | |
| LOW OIL | Oil too light or diluted from leaking fuel pump diaphragm. | Drain, fill with proper oil. Repair or replace fuel pump. | |
| LOW OIL | Oil too low. | Add oil. | |
| LOW OIL | Oil relief valve not seating. | Remove. Clean all lines and passages. Replace. | |
| LOW OIL | Badly worn bearings. | Replace. | |
| LOW OIL | Sludge on oil screen. | Remove and clean. Replace. | |
| LOW OIL | Badly worn oil pump. | Replace. | |
| LOW OIL CONSUMPTION | Clogged oil passages | Clean all lines and oil passages | |
| LOW OIL CONSUMPTION | Oil too heavy | Replace with lighter oil | |
| Low oil pressure | *Low oil pressure shutdown. | A. Oil level. Replenish if necessary. b. Sensor. Faulty sensor will shut down engine. | C. Refer to engine service manual for troubleshooting guide for oil system. |
| Low Oil Pressure | Low oil pressure (lower than 14 ±2 PSI) | Check oil level and replenish if necessary. Contact Onan Distributor if oil level is correct. | |
| Low Oil Pressure | Engine runs and then shuts down. The low oil pressure fault lamp is on. | Check fuel supply and for dirty fuel filters. Replace if necessary. Check oil level and replenish if needed. See MAINTENANCE section. Check for dirty or plugged air filters and replace if necessary (see MAINTENANCE section). | |
| LOW OIL PRESSURE | The DC control has sensors that continuously monitor the engine for abnormal conditions such as low oil pressure and high coolant temperature. If one of these conditions occur, the control stops the engine. | If low, add oil to bring level up to full mark. Inspect engine exterior for leaks and repair as necessary. Be sure the correct viscosity oil is used for existing ambient temperature (see Maintenance section). The oil pressure switch actuates the fault circuit if pressure drops below 9 psi (62 kPa). | Remove the dipstick and check oil level. If low, add oil to bring level up to full mark. Inspect engine exterior for leaks and repair as necessary. Be sure the correct viscosity oil is used for existing ambient temperature. |
| low oil pressure | Common fault such as low oil pressure | ||
| Low oil pressure light ON | Low oil pressure light ON, no shutdown | Disconnect wire at TB11-30. Light ON after relay reset. Replace engine monitor board. | |
| Low oil pressure shutdown | Low oil pressure shutdown. | Check— a. Oil level. Replenish if necessary. b. Sensor. Faulty sensor will shut down engine. c. Refer to engine service manual for troubleshooting guide for oil system. | |
| LOW VOLT SHUTDOWN | Shutdown because minimum DC bus voltage cannot be attained (18 VDC or 36 VDC) | ||
| LOW VOLT START | Indicates that the genset started for a bus voltage below the trigger voltage: 25 VDC or 50 VDC (or other) | ||
| M191is | Compressor Belt Tension System | ||
| M1993s | Service Access | ||
| M19946 | Bypass Thermostat | ||
| MAG PICKUP | Shutdown lamp lights. MESSAGE: MAG PICKUP 220 − SHUTDOWN | Indicates mag pickup speed indication is not being sensed or does not match generator set output frequency. | |
| MAG PICKUP 220 | Shutdown lamp lights. MESSAGE: MAG PICKUP 220 − SHUTDOWN | Indicates mag pickup speed indication is not being sensed or does not match generator set output frequency. | Indicates mag pickup speed indication is not being sensed or does not match generator set output frequency. a. Restart and check RPM on the digital display. |
| nk | Shutdown due to high engine temperature | ||
| NO AC OUTPUT VOLTAGE | *16. No AC output voltage. | Field breaker is tripped. Reset breaker. Contact an Onan dealer or distributor if voltage buildup causes breaker to trip. | |
| NO. 1 | HIGH TEMPERATURE—FAULT CODE NO. 1 (Engine coolant or inverter heat sink temperature exceeded design limit) | Corrective Action: Check the second-level fault code by touching Stop. The second-level fault will be either No. 33 or No. 34. | |
| NO. 2 | LOW OIL PRESSURE—FAULT CODE NO. 2 (Low oil pressure cutoff switch did not open) | Corrective Action: 1. Check engine oil level and add oil as necessary (Page 15). 2. Drain excess oil (above dipstick Full mark). | |
| NO. 3 | SERVICE CHECK FAULT—CODE NO. 3 (A second-level fault occurred) | Corrective Action: Check the second-level fault code by touching Stop. The second-level fault will be one of the following in this table. | |
| No. 4 | The genset does not start after two or three tries. | Wait 5 seconds for the control to reset before trying again. | |
| NO. 11 | OVERCURRENT FAULT—CODE NO. 11 (AC output short) | Corrective Action: 1. Turn off the genset line circuit breaker. If the genset no longer shuts down, the genset is probably okay—check for and repair a short circuit in the vehicle appliances, wiring or shorted battery charger transformer. 2. Check whether the vehicle engine and genset share the same starting battery. If so, and this fault occurs when cranking the vehicle engine, low battery voltage may be causing this shutdown. Increase battery capacity or install a separate battery and battery charging system for the genset. | |
| NO. 12 | INVERTER OVERVOLTAGE FAULT—CODE NO. 12 (Controller not able to regulate to rated voltage) | Corrective Action: Check whether the vehicle engine and genset share the same starting battery. If so, and this fault occurs when cranking the vehicle engine, low battery voltage may be causing this shutdown. Increase battery capacity or install a separate battery and battery charging system for the genset. | |
| NO. 13 | INVERTER UNDERVOLTAGE FAULT—CODE NO. 13 (Controller not able to regulate to rated voltage) | Corrective Action: Check whether the vehicle engine and genset share the same starting battery. If so, and this fault occurs when cranking the vehicle engine, low battery voltage may be causing this shutdown. Increase battery capacity or install a separate battery and battery charging system for the genset. | |
| NO. 14 | INVERTER OVERFREQUENCY FAULT—CODE NO. 14 (Controller not able to regulate to rated frequency) | Corrective Action: Reduce the number of connected appliances, especially when air conditioners and battery chargers are running. | |
| NO. 15 | During normal operation Frequency fell to less than 54 Hz for more than 8 seconds | Push the line circuit breaker to OFF and restart the genset. If the genset now runs, run it with fewer connected loads, especially those with high motor starting loads such as air conditioners. Check all fuel fittings for fuel and air leaks and tighten as necessary. Reprime. Replace the engine air filter and clean the spark-arrest muffler (p. 3-4). Replace the fuel filter (p. 3-6). | |
| NO. 15 | INVERTER UNDERFREQUENCY FAULT—CODE NO. 15 (Controller not able to regulate to rated frequency) | Corrective Action: 1. Reduce the number of connected appliances, especially when air conditioners and battery chargers are running. 2. Have air conditioners and other appliances checked for proper operation. (A locked compressor rotor can cause very low power factor.) | |
| No. 16 | Engine Pre-Alarms | ||
| NO. 19 | GOVERNOR ACTUATOR FAULT—The controller sensed that the actuator circuit is either open or shorted | Corrective Action: See an authorized Onan dealer. | |
| NO. 22 | GOVERNOR OVERLOAD FAULT—The duration of operation at or near full-duty cycle was beyond the design limit | 1. Reduce the number of appliances running at the same time, especially those with high motor starting loads such as air conditioners. 2. Check for fuel (air) leaks at all fuel fittings and tighten as necessary. Prime the engine fuel system by holding the control switch at Stop for one minute. 3. Replace the engine air filter (Page 17) and clean the spark-arrest muffler (Page 18). 4. Replace the fuel filter (Page 19). | |
| NO. 22 | Due to connected overload or low engine performance, the Controller maintained the governor actuator at full-duty cycle—maximum pulse-width-modulated square-wave signal [PWM]—for 60 consecutive seconds | Reduce the number of appliances running at the same time, especially those with high motor starting loads such as air conditioners. Check all fuel fittings for fuel and air leaks and tighten as necessary. Reprime. Replace the engine air filter and clean the spark-arrest muffler (p. 3-4). Replace the fuel filter (p. 3-6). | |
| NO. 22 | GOVERNOR OVERLOAD: Maximum allowable time at full-duty cycle was exceeded | 1. Reduce the number of appliances running at the same time, especially those with high motor starting loads such as air conditioners. 2. Check the fuel tank and fill as necessary. (Note: The arrangement of pickup tubes in the fuel supply tank probably is such that the genset will run out of fuel before the propulsion engines.) 3. Reconnect any loose spark plug or ignition coil lead (Page 26). 4. Replace the in-line fuel filter. | |
| NO. 23 | FAULTY OIL PRESSURE SENDER: Controller sensed shorted or grounded sender | Look for a loose oil pressure sender lead and reconnect it if necessary. The sender is directly behind the oil filter (Page 17). | |
| NO. 23 | LOW OIL PRESSURE CUTOFF SWITCH FAULT | See an authorized Onan dealer. | |
| NO. 24 | TEMPERATURE SENDER FAULT—The controller sensed that the sender circuit is either open or shorted | Corrective Action: See an authorized Onan dealer. | |
| NO. 24 | After 10 minutes of normal operation the Controller checked for and sensed an open temperature sender/harness | See an authorized Onan dealer. | |
| NO. 24 | FAULTY ENGINE TEMP SENDER: Controller sensed open or grounded sender | Look for a loose temperature sender lead and reconnect it if necessary. The sender is directly behind the last spark plug (Page 27). | |
| NO. 24 | COOLANT TEMPERATURE SENDER FAULT | See an authorized Onan dealer. | |
| NO. 25 | ENGINE ABOVE SPEED TARGET FAULT | See an authorized Onan dealer. | |
| NO. 26 | ENGINE BELOW SPEED TARGET FAULT | 1. Reduce the number of connected appliances, especially when air conditioners and battery chargers are running. 2. Prime the engine fuel system by holding the control switch down in its Stop position for at least 1 minute. | |
| NO. 27 | AC VOLTAGE SENSE FAULT—The controller was unable to sense output voltage | Corrective Action: See an authorized Onan dealer. | |
| NO. 27 | The Controller lost VAC sensing during normal voltage regulation when the field was functioning normally and frequency was at least 40 Hz | See an authorized Onan dealer. | |
| NO. 27 | PMA SENSE LOST FAULT | See an authorized Onan dealer. | |
| NO. 28 | DC SENSE LOST FAULT | Open the circuit breaker. If the fault does not persist, check for and disconnect excessive loads from the genset before starting. | |
| NO. 29 | HIGH BATTERY VOLTAGE FAULT—The controller sensed battery system voltage greater than 19 volts | 1. Check battery bank connections and reconnect, if necessary, so that the 12 volt batteries serving the genset are connected in parallel (12 volt) rather than in series (24 volt). 2. Select a lower battery booster charge rate. | |
| NO. 29 | During startup the Controller sensed that battery system voltage was greater than 19.2 volts for 5 milliseconds or greater than 19.2 volts for 1 second while running | Check battery bank connections and reconnect if necessary so that the 12 volt batteries serving the genset are connected in parallel (12 volt) rather than in series (24 volt). Select a lower battery booster charge rate. | |
| NO. 31 | Engine speed greater than 3400 rpm | See an authorized Onan dealer. | |
| NO. 31 | OVERSPEED FAULT | See an authorized Onan dealer. | |
| NO. 32 | LOW CRANKING SPEED FAULT—Cranking speed less than 100 rpm [2.5 Hz, generator] for more than 12 seconds | 1. Have the vehicle propulsion engine running while trying to start the genset. (The battery charging alternator may be able to maintain starting voltage high enough to get the genset started.) 2. Clean and tighten the battery cable connections at the battery and at the genset. 3. Recharge or replace the battery. Refer to the battery manufacturer’s recommendations. 4. Replace engine oil with oil of proper viscosity for ambient temperatures. (High oil viscosity can slow down cranking speed.) | |
| NO. 32 | The Controller could not detect cranking speed [quadrature zero crossings] for 12 seconds | Have the vehicle propulsion engine running while trying to start the genset. Its charging alternator may be able to maintain a high enough battery terminal voltage to start the genset. Service the battery as necessary by cleaning and tightening connections, recharging or replacing the battery or replacing damaged battery cables. Change the engine oil to oil of the proper viscosity for the ambient temperature. High oil viscosity can slow down cranking speed. | |
| NO. 32 | STARTING FAULT: Cranking not detected | See an authorized Onan dealer. | |
| NO. 33 | HIGH ENGINE COOLANT TEMPERATURE FAULT | 1. Check the engine coolant level and add coolant and repair leaks as necessary (Page 19). 2. Check for and remove any objects blocking the air inlet or outlet openings in the bottom of the genset. 3. Reduce the number of appliances connected at the same time. (Note that high altitude and high ambient temperature decrease engine cooling capacity.) 4. Clean and flush the cooling system to remove coolant passage fouling. 5. If the genset overheats only underway, see the coach manufacture regarding air baffles or other means to direct cooling air into the genset. | |
| No. 33 | High temperatures and temperature rises indicate that warm discharge air is recirculating back into the genset compartment or that the inlet or outlet air opening is restricted. | Find out why and correct as necessary to meet the temperature specifications. | |
| NO. 34 | HIGH INVERTER TEMPERATURE FAULT | 1. Check for and remove any objects blocking the air inlet or outlet openings in the bottom of the genset. 2. Reduce the number of appliances connected at the same time. (Note that high altitude and high ambient temperature decrease cooling capacity.) | |
| NO. 35 | CONTROL CARD FAULT—Microprocessor EEPROM error during self-test | Corrective Action: See an authorized Onan dealer. | |
| NO. 35 | During startup the genset Controller detected an EE memory error | See an authorized Onan dealer. | |
| NO. 35 | CONTROL CARD FAILURE FAULT | See an authorized Onan dealer. | |
| NO. 36 | ENGINE STOPPED FAULT—The genset stopped without a command from the controller | 1. Check the fuel level and refill as necessary. (Note: The genset fuel pickup is probably higher than the vehicle engine fuel pickup.) 2. Check for fuel (air) leaks at all fuel fittings and tighten as necessary. Prime the engine fuel system by holding the control switch at Stop for one minute. 3. Check the engine air filter (Page 17) and remove any blockage. 4. Check for mechanical damage. 5. Replace the fuel filter (Page 19). | |
| NO. 36 | The Controller declared this fault because engine speed fell below 1000 RPM for 0.5 seconds, though not by Controller action | Check fuel level and refill as necessary. (Note: The genset fuel pickup is probably higher than the vehicle engine fuel pickup.) Prime the engine fuel system for one minute (p. 2-4). Check all fuel fittings for fuel and air leaks and tighten as necessary. Reprime. Check the engine air filter and remove any blockage (p. 3-4). Replace the fuel filter (p. 3-6). | |
| NO. 36 | UNKNOWN SHUTDOWN—SEE MANUAL: Engine stopped without command by controller | 1. Open any closed fuel supply valves. 2. Check the fuel tank and fill as necessary. (Note: The arrangement of pickup tubes in the fuel supply tank probably is such that the genset will run out of fuel before the propulsion engines.) 3. Check for mechanical damage and service as necessary. 4. Remove any blockage in the combustion air inlet (left end of genset). 5. Reconnect any loose spark plug or ignition coil lead (Page 26). 6. Replace the in-line fuel filter. | |
| NO. 36 | ENGINE STOPPED FAULT—CODE NO. 36 | 1. Check fuel level. (Note: The genset fuel pickup is probably higher than the vehicle engine pickup.) 2. Prime the engine fuel system by holding the control switch down in its Stop position for at least 1 minute. 3. Check the engine air filter and remove any blockage (Page 17). 4. Check for mechanical damage. | |
| NO. 37 | Wrong frequency/rpm ratio | See an authorized Onan dealer. | |
| NO. 37 | INVALID GENSET CONFIGURATION: Controller cannot determine genset operating parameters | See an authorized Onan dealer. | |
| NO. 37 | INVALID GENSET CONFIGURATION FAULT—CODE NO. 37 | See an authorized Onan dealer. | |
| NO. 38 | FIELD OVERLOAD FAULT—Field voltage exceeded 150 VDC | 1. Reduce the number of air conditioners running at the same time (and other appliances that cause low power factor). 2. Have the air conditioners and other appliances checked for proper operation. (A locked compressor rotor can cause very low power factor.) | |
| NO. 38 | Low power factor loads | Reduce the number of appliances running at the same time, especially those with high motor starting loads such as air conditioners. Have air conditioners and other appliances checked for proper operation. (A locked compressor rotor can cause very low power factor.) | |
| NO. 38 | During normal voltage regulation Field Voltage exceeded 180 VAC for 10 seconds | Reduce the number of air conditioners running at the same time, and other appliances that cause low power factor. (The lower the power factor of a motor or compressor, the more current it draws per kilowatt. The genset Controller, in turn, must boost field voltage to meet the higher demand for current imposed by low power factor.) Have the air conditioners and other appliances checked for proper operation. (A locked compressor rotor can cause a very low power factor.) | |
| NO. 38 | OVERCURRENT FAULT—CODE NO. 38 | Reduce the number of appliances running at the same time, especially those with high motor starting loads such as air conditioners. Start up with no load and let the genset run for five minutes to cool down the inverter. | |
| NO. 39 | LOW BATTERY VOLTAGE: Marginal battery, connections, or charging system, or parasitic loads | 1. Clean and tighten the positive (+) and negative (−) battery cable connections at the battery and genset (Page 18). 2. Recharge or replace the battery. Refer to the battery manufacturer’s recommendations. | |
| NO. 41 | SHORTED ROTOR FAULT—The rotor circuit is shorted to ground | Corrective Action: See an authorized Onan dealer. | |
| NO. 41 | Controller unable to sense field or output voltage | See an authorized Onan dealer. | |
| NO. 42 | PROCESSOR FAULT—Microprocessor ROM error during self-test | Corrective Action: See an authorized Onan dealer. | |
| NO. 42 | During startup the genset Controller detected a ROM memory error | See an authorized Onan dealer. | |
| NO. 42 | PROCESSOR FAULT—CODE NO. 42 | See an authorized Onan dealer. | |
| NO. 43 | PROCESSOR FAULT—Microprocessor RAM error during self-test | Corrective Action: See an authorized Onan dealer. | |
| NO. 43 | During startup the genset Controller detected a RAM memory error | See an authorized Onan dealer. | |
| NO. 43 | PROCESSOR FAULT—CODE NO. 43 | See an authorized Onan dealer. | |
| NO. 45 | SPEED SENSE FAULT—Controller unable to sense quadrature frequency | Check the fuel level and fill as necessary. Then prime the engine fuel system by holding the control switch at Stop for one minute and try restarting. | |
| NO. 45 | After start disconnect the Controller lost speed sense [quadrature zero crossings] for 0.25 seconds | See an authorized Onan dealer. | |
| NO. 45 | SPEED SENSE LOST: Controller unable to sense field voltage | See an authorized Onan dealer. | |
| NO. 46 | INVERTER POWER SUPPLY FAULT—CODE NO. 46 | 1. Avoid running the genset while cranking the vehicle engine in installations where the genset batteries are used to supplement the vehicle engine batteries. 2. Clean and tighten the positive (+) and negative (–) battery cable connections at the battery, vehicle frame and genset (Page 17). 3. Recharge or replace the battery. Refer to the battery manufacturer’s recommendations. 4. Install or service a battery charging system in the vehicle if the genset is not so equipped. | |
| NO. 47 | Controller unable to sense ignition | See an authorized Onan dealer. | |
| NO. 48 | Controller unable to sense field voltage | See an authorized Onan dealer. | |
| NO. 48 | The field sense circuit on the Controller circuit board failed during normal voltage regulation | See an authorized Onan dealer. | |
| NO. 51 | Microprocessor malfunction | See an authorized Onan dealer. | |
| NO. 52 | Open or short circuit in fuel injector | See an authorized Onan dealer. | |
| NO. 54 | Open or short circuit in MAT sender | See an authorized Onan dealer. | |
| NO. 56 | Open or short circuit in MAP sender | See an authorized Onan dealer. | |
| NO. 57 | OVERPRIME FAULT—Prime mode exceeded 3 minutes | Check for and remove any object that may be holding either control switch (remote or local) in the prime (stop) position. | |
| NO. 57 | The local or remote control switch was held in the Prime position for more than 3 minutes | ||
| NO. 58 | HIGH EXHAUST TEMPERATURE: Exhaust temperature exceeded design limits | 1. Check for and reconnect or replace any disconnected or leaking raw water hoses (Page 19). 2. Check for and replace a worn raw water impeller (Page 23). | |
| NO. 61 | EMERGENCY SHUTDOWN: Genset was shut down by a fire suppression system or other external control connected to genset | Make all necessary repairs to the genset and connected equipment and reset the external control which shut down the genset. | |
| O/U VOLTAGE | 10. The O/U VOLTAGE lamp lights. Engine shuts down. | Contact an authorized service center for service. | |
| O_Lod | Overload — AC output is cut off on the grounds that the generator operation is in overload condition or appliance(s) will be out of order | Generator operation is in overload condition; appliance(s) will be out of order | Stop the engine immediately and check the appliance and/or generator for overloading; After the check and remedy, restarting the engine will resume displaying in the normal manner |
| One blink | Shutdown due to high engine coolant temperature | ||
| OS | Overspeed | ||
| OSKO | Overspeed Cut Out | ||
| OV | Output voltage | Set the switch to the desired AC or DC position | |
| OVER CRANK | OVER CRANK—CODE NO. 4 | Cranking time exceeded 35 seconds | 1. Check fuel level and refill as necessary. (Note: The genset fuel pickup is probably higher than the vehicle engine fuel pickup.) 2. Prime the engine fuel system for one minute (p. 2-4). 3. Check the engine air filter and remove any blockage (p. 3-4). 4. Change the engine oil to oil of the proper viscosity for the ambient temperature. High oil viscosity can slow down cranking speed. 5. Check all fuel fittings for fuel and air leaks and tighten as necessary. Reprime. 6. Replace the fuel filter (p. 3-6). |
| OVER TEMPERATURE (INVERTER) | Inverter temperature detected to be over 70°C | Reduce loads, verify heat sink cleanliness and air flow; if issue persists after cooling, replace inverter | |
| OVERCRANK | 5. OVERCRANK lamp lights and engine stops cranking. | A. Check for empty fuel tank, fuel leaks, or plugged fuel lines and correct as required. b. Check for dirty fuel filter and replace if necessary (see Maintenance section), c. Check for dirty or plugged air filter and replace if necessary (see Maintenance section). d. Check for loose connections in the ignition primary, ignition secondary, or solenoid valve | A. Check for empty fuel tank (LPG Vapor), fuel or leaks, or plugged fuel lines and correct as required. |
| OVERCRANK | OVERCRANK (red) indicates that the engine has failed to start during the cranking period | ||
| OVERCRANK | Shutdown because engine failed to start (five 20-second cranks with 15-second rests) | ||
| OVERCRANK | Starter has been locked out because of excessive cranking time. | ||
| OVERCRANK | Indicates engine has shut down because of a failure to start during the cranking period. | ||
| Overcrank | Overcrank fault lamp lights and engine stops cranking after about 75 seconds. | Check for empty fuel tank, empty fuel filters, system leaks, or plugged fuel filters and fuel supply lines. Correct as required. Engine runs and then shuts down. The low oil pressure fault lamp Is on. | |
| Overcrank | Engine runs, shuts down, cranks for 75-seconds, cranking cycle stops, overcrank light on. | Check for dirty fuel filters and replace if necessary (see MAINTENANCE section). Check for dirty or plugged air filters and replace if necessary (see MAINTENANCE section). | |
| OVERCRANK 222 | Shutdown lamp lights. Engine runs and then shuts down. MESSAGE: OVERCRANK 222 − SHUTDOWN | Indicates possible fuel system problem. a. Check for empty fuel tank, fuel leaks, or plugged fuel lines and correct as required. b. Check for dirty fuel filter and replace if necessary. c. Check for dirty or plugged air filter and replace if necessary. d. Reset the control and restart after correcting the problem. | |
| OVERCRANK 222 | Engine stops cranking. | Possible fuel system problem. | A. Check for empty fuel tank, fuel leaks, or plugged fuel lines and correct as required. b. Check for dirty fuel filter and replace if necessary. c. Check for dirty or plugged air filter and replace if necessary. d. Reset the control and restart after correcting the problem. Contact an authorized service center if none of the above. |
| Overcrank-CODE NO. 4 | Cranking time exceeded 20 to 60 seconds, depending on engine temperature | De-energize the PTO clutch, if so equipped. Check fuel level and refill as necessary. (Note: The generator set fuel pickups are probably higher than the propulsion engine fuel pickups.) Open any closed fuel supply and return valves. Prime the engine fuel system for at least 30 seconds (p. 3-3). Service as necessary by cleaning and tightening battery connections, recharging or replacing the battery or replacing damaged battery cables (p. 4-2). Remove combustion air or exhaust system blockages. Check all fuel fittings for fuel and air leaks and tighten as necessary. Replace fuel filters (p. 4-6). Check for contaminated fuel by connecting to a source of known fuel quality. Change the engine oil to | |
| OVERCURRENT | Shutdown lamp lights. MESSAGE: OVERCURRENT 320 ï WARNING | Indicates that generator output current has exceeded 110% of rated for 60 seconds. | Contact an authorized service center. |
| OVERCURRENT | Shutdown lamp lights. MESSAGE: OVERCURRENT 321 ï SHUTDOWN | Indicates that generator output current has exceeded 110% of rated, and that a PCC time/current calculation has initiated an overcurrent shutdown. | Contact an authorized service center. |
| OVERLOAD | 9. The OVERLOAD lamp lights. Engine shuts down. | The line circuit breaker is located in the ATS or generator set output box. If load exceeds generator current rating, the breaker will trip preventing the generator from being overloaded. Locate the source of overload and correct as necessary. Manually reset breaker to reconnect the load to the generator. | |
| OVERLOAD | Too many applications connected or inverter defective | Measure current draw, reduce loads, test with load bank, check stator and replace if necessary; perform stator check before replacement | |
| OVERLOAD | Warning lamp lights. MESSAGE: OVERLOAD 330 ï WARNING | Indicates that three-phase power output exceeds 105% of standby (or 115% of prime) rating. After five seconds, the Load Dump output is ac- tivated. After 60 seconds, the OVERLOAD warning is activated. | Contact an authorized service center. |
| OVERSPEED | 6. Engine runs and then shuts down, OVERSPEED lamp lights. | Indicates engine has exceeded normal operating speed. Contact an authorized service center for service. | |
| OVERSPEED | OVERSPEED (red) indicates that the engine has shut down because of excessive speed | ||
| OVERSPEED | Shutdown because engine exceeded 4100 RPM | ||
| Overspeed | Overspeed light on, no shutdown. | Check governor and throttle linkages for freedom of movement. | |
| OVERSPEED 223 | Shutdown lamp lights. Engine runs and then shuts down. MESSAGE: OVERSPEED 223 − SHUTDOWN | Indicates engine has exceeded normal operating speed. (115% ±1% of nominal). | |
| Overspeed light on, no shutdown | Overspeed light on, no shutdown | Disconnect wire at TB11-29. Light on after reset; replace engine monitor board. | |
| Overspeed light ON, no shutdown | Overspeed light ON, no shutdown. | Disconnect wire at TB11-29. Light ON after reset; replace engine monitor board. | |
| Overspeed shutdown | Engine runs, shuts down and cranks for 75-seconds. Cranking cycle stops; fault lamp lights. | 4. Check fuel supply. | |
| Overspeed shutdown | Overspeed shutdown | Check governor and throttle linkages, for freedom of movement. Check overspeed switch. | |
| OVERTEMP | Shutdown because of high engine or heat sink temperature | ||
| OVERVOLT | Shutdown because DC bus exceeded maximum allowable voltage: 29.5 VDC or 59 VDC (or other) | ||
| P.N. 06090 | Pressure gauge inoperative or not registering accurately | ||
| P.N. 06100 | Oil leaking from underside of crankcase | Replace oil gauge or cover O.ring, and drain plug O.ring | |
| PAD SHEAR | Shutdown because the genset has shifted from its installed position | ||
| PRE HET/LOP | PRE HET/LOP lamp lights. Engine continues to operate. | Engine has begun to overheat and engine temperature has risen to approximately 205°F (97°C) or coolant level is low. | A. Reduce load if possible by turning off non-critical loads. b. Check air inlets and outlets and remove any obstructions to airflow. 2B. Indicates engine oil pressure has dropped to 30 psi (207 kPa). If generator is powering critical loads and cannot be shut down, wait until next shutdown period and then follow step 4. If engine can be stopped follow procedure in Steps 3 and 4. |
| PRE HI ENG TEMP | PRE HI ENG TEMP (yellow) indicates that engine coolant temperature is marginal (high) or that the coolant level is low (when equipped with a low coolant level switch) | ||
| PRE HI ENG TEMP | Indicatesengine temperature is marginally high. | ||
| PRE HI ENGINE TEMP | *2. PRE HI ENGINE TEMP lamp lights. Engine continues to operate. | 2. Indicates engine has begun to overheat and engine temperature has risen to approximately 205°F (97°C). If generator is powering non-critical and critical loads and cannot be shutdown, use the following: a. Reduce load if possible by turning off non-critical loads. b. Check air inlets and outlets and remove any obstructions to airflow. c. Open doors or windows in generator area to increase ventilation. If engine can be stopped, follow procedure in step 3. | |
| PRE Hi ENGINE TEMP | 2. PRE Hi ENGINE TEMP lamp lights. Engine continues to operate. | Indicates engine has begun to overheat and engine temperature has risen to approximately 205°F (97°C). If engine can be stopped, follow procedures in step 3. Use the following procedures if generator is powering critical loads and cannot be shutdown. a. Check air inlets and outlets and remove any obstructions to airflow. b. Open doors or windows in generator area to increase ventilation. c. Reduce load if possible by turning off non-critical loads. | |
| PRE LO OIL PRES | *4. PRE LO OIL PRES lamp lights. Engine continues to operate. | Engine oil pressure has dropped to 20 psi (138 kPa). | 4. Indicates engine oil pressure has dropped to 20 psi (138 kPa). If generator is powering critical loads and cannot be shut down, wait until next shutdown period and then follow step 5 procedure. If engine can be stopped, follow procedures in step 5. |
| PRE LO OIL PRES | PRE LO OIL PRES (yellow) indicates that engine oil pressure is marginal (low) | ||
| PRE:LO OIL PRES | *4. PRE:LO OIL PRES lamp lights. Engine continues to operate. | Indicates engine oil pressure has dropped to 30 psi (207 kPa). If engine can be stopped, follow procedures in step 5. If generator is powering critical loads and cannot be shut down, wait until next shutdown period and then follow step 9 procedure. | |
| PRELO OIL PRES | PRELO OIL PRES lamp lights. Engine continues to operate. | Indicates engine oil pressure has dropped to 20 psi (138 kPa). If generator is powering critical loads and cannot be shut down, wait until next shutdown period and then follow step 5 procedure. If engine can be stopped, follow procedure in step 5. | |
| R1 | Unit starts, but stops immediately | Resistor R1 may be open. | Check voltage on both sides of R1. With set running voltage should be 24-32 volts DC. |
| R4 | Engine Does Not Crank — Circuit breaker tripped (R4) | Circuit breaker tripped (R4) | Wait for circuit breaker to return to local ambient temperature to reset |
| R4 | REMOTE CONTROL (if equipped) Run Lamp, Time Meter, or Battery Condition Meter Does Not Operate | If remote switch functions properly (starting and stopping generator set) but meters and run lamp do not operate. Current sensing resistor R4 on control board A1 has opened, caused by a short in the remote control wiring between control board P2/J2 terminal 6/5 and remote control time meter, run lamp/battery condition meter | Check for continuity of remote wiring harness and wiring on remote control in series with terminals 6 and 5. Replace wiring of shorted circuit |
| RAIN | Rain | Repair as soon as convenient | |
| Red | Active Fault is present | ||
| red lamp | Any undedicated (red) fault lamp is energized | Both fault functions are normally factory set and may or may not shut down the generator set. Both fault functions may be factory set optionally for non-shutdown and time delayed after start disconnect or immediate operation. Troubleshooting should be directed to the selected sensor application. If an engine monitor malfunction or sensor is suspected, contact an Onan Distributor. | |
| red Shutdown lamp | Shutdown fault | Make adjustments or corrections before restarting the genset | |
| Remote circuit breaker | Remote circuit breaker is tripped. | Reset breaker but will not start automatically or from a remote panel (Note: Run/Stop/Remote switch must be in the REMOTE position for automatic or remote starting). Contact an Onan dealer or distributor if breaker trips after resetting. | |
| REMOTE CIRCUIT BREAKER | *14. Remote circuit breaker is tripped. Reset breaker but will not start automatically or from a remote panel (Note: Run/Stop/Remote switch must be in the REMOTE position for automatic or remote starting). | ||
| REVERSE POWER | Shutdown lamp lights. MESSAGE: REVERSE POWER 335 ï SHUTDOWN | Indicates improper CT or PT phasing. (Non-parallel units only.) | Contact an authorized service center. |
| RUN | RUN (green) indicates that the starter has disconnected and that the set is running | ||
| RUN or fault lamp(s) | Does not light when Lamp Test switch is engaged. | Contact an authorized service center for assistance. | |
| RUPTURE BASIN | Warning lamp lights. MESSAGE: CUSTOMTER FAULT 1 262 − WARNING or RUPTURE BASIN | ||
| S1 | Low oil pressure — fault sensor closes circuit to ground to stop the engine | ||
| S1 | Generator Set Does Not Stop After Switch Is Pushed to Off | Faulty set control start/stop switch (S1) | Check start/stop switch and replace if defective |
| S2 | High coolant temperature — fault sensor closes circuit to ground to stop the engine | ||
| S3 | High exhaust temperature — fault sensor closes circuit to ground to stop the engine | ||
| S3 | Unit starts, but stops immediately | S3 low oil pressure switch may be defective. | Check S3. Switch should close with set running at 10 lbs. minimum oil pressure. |
| S4 | Overspeed — fault sensor closes circuit to ground to stop the engine | ||
| S5 | Low coolant level option — fault sensor closes circuit to ground to stop the engine | ||
| S12 | The engine does not crank in Run mode — The Run-Stop-Remote switch (S12) or wiring is faulty. | The Run-Stop-Remote switch (S12) or wiring is faulty. | Disconnect pin connector J4 from the ECM and check for electrical continuity (zero ohms) between switch terminals 2 and 3 when the switch is in the Run position and between terminals 1 and 2 when it is in the Remote position. Replace the switch if either set of contacts is faulty; If the switch works, check for electrical continuity (zero ohms) between J4-6 and J4-7 on the wire harness when the switch is in the Run position and between J4-5 and J4-7 when the switch is in the Remote position. Repair the wire harness if there is no electrical continuity in either position of the switch. |
| SC1635c | The engine does not start | Check the following while the genset is operating: START / STOP / REMOTE SWITCH INDICATOR LAMPS, CIRCUIT BREAKERS | |
| SC-1609 | STOPPING SET AT CONTROL PANEL | ||
| SC-1610 | PERMISSIVE AUTOMATIC START SWITCH | ||
| Seven blinks | Shutdown due to a loss of raw water flow for engine and exhaust cooling. | ||
| SHORT CIRCUIT | Shutdown lamp lights. MESSAGE: SHORT CIRCUIT 322 ï SHUTDOWN | Indicates that generator output current has exceeded 175% of rated. | Contact an authorized service center. |
| SHUTDOWN | Shutdown lamp lights. MESSAGE: HIGH AC VOLTAGE 301 − SHUTDOWN Indicates that one or more of the phase voltages has exceeded 130% of nominal, or has exceeded 110% of nominal for 10 seconds. | ||
| SHUTDOWN | Shutdown lamp lights. MESSAGE: UNDER FREQUENCY 313 − SHUTDOWN Indicates that engine speed has dropped below 90% of nominal for 10 seconds. | ||
| SHUTDOWN | Shutdown lamp lights. MESSAGE: OVERCURRENT 321 − SHUTDOWN Indicates that generator output current has exceeded 110% of rated, and that a PCC time/current calculation has initiated an overcurrent shutdown. | Check load and load lead connections. | |
| SHUTDOWN | Shutdown lamp lights. MESSAGE: SHORT CIRCUIT 322 − SHUTDOWN Indicates that generator output current has exceeded 175% of rated. | Check load and load lead connections. | |
| SHUTDOWN | Shutdown lamp lights. MESSAGE: REVERSE POWER 335 − SHUTDOWN Indicates improper CT or PT phasing. (Non-parallel units only.) | Check CT / PT wiring. Refer to CT Installation in Section 5. | |
| SOE | System Over-ride Event | ||
| soul | G | ||
| SPN: 1, FMI: 0 | Engine Fault, Above Normal | Engine controller not in communication with NIM | See an authorized Cummins Onan Service Representative |
| SPN: 97, FMI: 0 | Water In Fuel Indicator, Above Normal | Water is present in the fuel separator | Drain the water from the fuel separator, see Draining the Fuel Filter in the Maintenance Chapter |
| SPN: 97, FMI: 16 | Water In Fuel Indicator, Above Normal | Water is present in the fuel separator | Drain the water from the fuel separator, see Section 5.5.2 on page 49 in the Maintenance Chapter |
| SPN: 100, FMI: 1 | Engine Oil Pressure, Below Normal | Engine oil pressure is below 24 to 51 psi (165 to 350 kPa) - depending on engine speed | Check engine oil level and add or drain oil as necessary. Repair any oil leaks (Section 5.2.3 on page 41) |
| SPN: 100, FMI: 3 | Engine Oil Pressure, Voltage Out of Range | Sensor or wiring is shorted or open | See an authorized Cummins Onan service representative |
| SPN: 100, FMI: 4 | Engine Oil Pressure, Volt. Out/Range | Engine oil pressure sensor or wiring is open or grounded | See an authorized Cummins Onan service representative |
| SPN: 100, FMI: 18 | Engine Oil Pressure, Below Normal | Engine oil pressure is below 165 to 350 kPa (24 to 51 PSI) depending on engine speed | Check engine oil level and add or drain oil as necessary. Repair any oil leaks (Section 5.2.3 on page 41) |
| SPN: 105, FMI: 3 | Intake Manifold Temperature, Volt. Out/Range | Sensor or wiring is shorted or open | See an authorized Cummins Onan service representative |
| SPN: 105, FMI: 16 | Intake Manifold Temperature, Above Normal | Intake manifold temperature is above 150 °C (302 °F) | See an authorized Cummins Onan service representative |
| SPN: 110, FMI: 0 | Engine Coolant Temperature, Above Normal | Engine coolant temperature is above 244 °F (118 °C) | Check for and clean a blocked sea water strainer. If above the water line, fill the strainer with water to assist priming; Check engine coolant level and add coolant as necessary. Repair any coolant leaks; Check for disconnected, kinked, or leaking water hoses and reconnect, reroute, or replace; Inspect the siphon break (if provided) for proper operation (Section 5.8.3); Check for a worn raw water impeller and replace as necessary; Check bottom of the hull for blockages at the through-hull fitting |
| SPN: 110, FMI: 3 | Engine Coolant Temperature, Volt. Out/Range | Sensor or wiring is shorted or open | See an authorized Cummins Onan service representative |
| SPN: 110, FMI: 4 | Engine Coolant Temperature, Volt. Out/Range | Sensor or wiring is shorted to ground | See an authorized Cummins Onan service representative |
| SPN: 110, FMI: 15 | Engine Coolant Temperature, Above Normal | Engine coolant temperature is above 226 °F (108 °C) | Check for and clean a blocked sea water strainer. If above the water line, fill the strainer with water to assist priming; Check engine coolant level and add coolant as necessary. Repair any coolant leaks; Check for disconnected, kinked, or leaking water hoses and reconnect, reroute, or replace; Inspect the siphon break (if provided) for proper operation (Section 5.8.3 on page 54); Check for a worn raw water impeller and replace as necessary; Check bottom of the hull for blockages at the through-hull fitting |
| SPN: 110, FMI: 16 | Engine Coolant Temperature, Above Normal | Engine coolant temperature is above 235 °F (113 °C) | Check for and clean a blocked sea water strainer. If above the water line, fill the strainer with water to assist priming; Check engine coolant level and add coolant as necessary. Repair any coolant leaks; Check for disconnected, kinked, or leaking water hoses and reconnect, reroute, or replace; Inspect the siphon break (if provided) for proper operation (Section 5.8.3 on page 54); Check for a worn raw water impeller and replace as necessary; Check bottom of the hull for blockages at the through-hull fitting |
| SPN: 158, FMI: 17 | Battery Potential, Below Normal | ECU cannot power down | See an authorized Cummins Onan service representative |
| SPN: 174, FMI: 3 | Fuel Temperature, Volt. Out/Range | Sensor or wiring shorted or open | See an authorized Cummins Onan service representative |
| SPN: 174, FMI: 4 | Fuel Temperature, Volt. Out/Range | Sensor or wiring shorted or open | See an authorized Cummins Onan service representative |
| SPN: 174, FMI: 16 | Fuel Temperature, Above Normal | Return fuel temperature is above 248 °F (120 °C) | See an authorized Cummins Onan service representative |
| SPN: 190, FMI: 0 | Engine Speed, Above Normal | Engine speed exceeded 3400 rpm | See an authorized Cummins Onan Service Representative |
| SPN: 190, FMI: 16 | Engine Speed, Above Normal | Engine speed exceeded 3000 rpm | See an authorized Cummins Onan service representative |
| SPN: 620, FMI: 3 | 5 Volts DC Supply, Volt. Out/Range | 5 V supply shorted to battery voltage | See an authorized Cummins Onan service representative |
| SPN: 620, FMI: 4 | 5 Volts DC Supply, Volt. Out/Range | 5 V supply shorted to ground | See an authorized Cummins Onan service representative |
| SPN: 629, FMI: 13 | Controller #1, Out of Calib. | The engine controller requires recalibration | See an authorized Cummins Onan Service Representative |
| SPN: 637, FMI: 2 | Timing (Crank) Sensor, Data Erratic | Excessive signal noise | See an authorized Cummins Onan service representative |
| SPN: 637, FMI: 10 | Timing (Crank) Sensor, Abnormal Rt/Chg. | Improper signal pattern | See an authorized Cummins Onan service representative |
| SPN: 970, FMI: 31 | Auxiliary Engine Shutdown Switch | An external controller sent a shutdown signal to the engine controller | Investigate the cause of shutdown, make necessary adjustments and repairs and rest the external controller |
| SPN: 971, FMI: 31 | Engine Derate Switch | An external derate input has been activated | See an authorized Cummins Onan service representative |
| SPN: 1076, FMI: 0 | Fuel Injection Pump Valve, Above Normal | Closure too long | See an authorized Cummins Onan service representative |
| SPN: 1076, FMI: 1 | Fuel Injection Pump Valve, Above Normal | Closure too short | See an authorized Cummins Onan service representative |
| SPN: 1076, FMI: 3 | Fuel Injection Pump Valve, Volt. Out/Range | Sensor or wiring shorted or open | See an authorized Cummins Onan Service Representative |
| SPN: 1076, FMI: 5 | Fuel Injection Pump Valve, Cur. Out/Range | Fuel injection pump fuel control valve open | See an authorized Cummins Onan Service Representative |
| SPN: 1076, FMI: 6 | Fuel Injection Pump Valve, Cur. Out/Range | Fuel injection pump fuel control valve open or grounded | See an authorized Cummins Onan Service Representative |
| SPN: 1076, FMI: 7 | Fuel Injection Pump Valve, Above Normal | ECU failed to detect closure | See an authorized Cummins Onan service representative |
| SPN: 1076, FMI: 10 | Fuel Injection Pump Valve, Abnormal Rt/Chg | Fuel injection pump fuel control valve circuit resistance | See an authorized Cummins Onan Service Representative |
| SPN: 1076, FMI: 13 | Fuel Injection Pump Valve, Out of Calib. | Fuel injection pump fuel control valve circuit resistance due to connector | See an authorized Cummins Onan Service Representative |
| SPN: 1109, FMI: 31 | Approaching Shutdown | Engine controller protection circuit approaching shutdown (30 seconds) - condition not available | See an authorized Cummins Onan Service Representative |
| SPN: 1110, FMI: 31 | Engine Has Shut Down | Engine controller protection circuit has shut down - condition not available | See an authorized Cummins Onan Service Representative |
| SPN: 1569, FMI: 31 | Engine Torque Derate | A derate condition exists - check coolant temperature, oil pressure, fuel temperature | See an authorized Cummins Onan Service Representative |
| SPN: 2000, FMI: 06 | ECU Failure, Cur. Out/Range | ECU failure | See an authorized Cummins Onan Service Representative |
| SSL 0 | No Fault | ||
| SSL 1 | Anticipated Error | ||
| SSL 3 | Engine Control Fault | ||
| SSL 4 | Inverter Loss | ||
| SSL 5 | Loss of Power Path | ||
| SSL 6 | Emergency Stop | ||
| SSL 7 | CPU Failure | ||
| Standard Overcrank | The engine monitor will turn on a fault lamp, activate an external alarm and stop the engine. | ||
| STATUS INDICATOR LIGHT DEAD | Faulty connections, no battery voltage | 1. Try the genset Start Switch if the remote Start Switch does not work, and vice versa. 2. Clean and tighten the positive (+) and negative (−) battery cable connections at the battery, vehicle frame and genset. 3. Recharge or replace the battery. Refer to the battery manufacturer’s recommendations. | |
| SWITCH NOT IN AUTO | Indicates that the control switch is not in AUTO | ||
| SWITCH OFF | 7. SWITCH OFF lamp flashes. | Indicates Run/Stop/Remote switch is in the Stop position which will prevent automatic starting if an automatic transfer switch is used. Move the Run/Stop/Remote switch to the Remote position for automatic starting. | |
| SWITCH OFF | Indicates generator set is not in automatic start operation mode. | ||
| SYSTEM CHARGING | Indicates that the genset is running and supplying power | ||
| T21 | Reference Transformer (T21) | Check continuity between VR21-1 and T7, apply shorting jumper if no continuity. Replace circuit breaker CB21 if necessary. | |
| T-26 | Air Compressor Will Not Maintain Adequate Air Pressure But Not Pumping Continuously | ||
| T-27 | Air Compressor Will Not Pump | ||
| T-29 | Air Compressor Will Not Stop Pumping | ||
| T-57 | Engine Will Not Crank Or Cranks Slowly (Air Starter) | ||
| TB1-3 | CONNECTED TO TIME DELAY START/STOP MODULE A15 | ||
| TB1-4 | COMMON ALARM B+ OUTPUT 4 AMP RATED DEVICE MAXIMUM | ||
| TB1-5 | GROUND | ||
| TB1-6 | CONNECTED TO TIME DELAY START/STOP MODULE A15. CONNECT REMOTE START CONTACT OF THE AUTOMATIC TRANSFER SWITCH TO TERMINAL TB1-5 OF MODULE A15. | ||
| TB1-7 | OUTPUT TO TIME DELAY START/STOP MODULE A15, FUSED AT 15 AMPS, AVAILABLE WHEN THE STARTING BATTERIES ARE CONNECTED | ||
| TB1-8 | OUTPUT TO RELAY K11, FUSED AT 20 AMPS | ||
| TB1-9 | B+ INPUT | ||
| TB1-10 | OUTPUT TO RELAY K12, FUSED AT 20 AMPS, ENERGIZED WHEN THE START SIGNAL IS APPLIED AND DE-ENERGIZED AT SHUTDOWN (NORMAL AND FAULT) | ||
| TB2-1 | GROUND INPUT FROM SENDER | ||
| TB2-2 | GROUND OUTPUT TO LIGHT/RELAY* | ||
| TB2-16 | MOMENTARY CONTACT TO GROUND | ||
| Three blinks | Service fault | Press Stop once to cause the two-digit, second-level shutdown code to blink. (Pressing Stop again will stop the blinking.) The two-digit code consists of 1, 2, 3, 4 or 5 blinks, a brief pause, and then 1 to 9 blinks. The first set of blinks represents the tens digit | |
| TS-6 | Engine Decelerates SIOWLY | ||
| TS-7 | Engine Difficult to Start or Will Not Start | ||
| TS-8 | Engine Noise ExCeSSive | ||
| TS-9 | Engine Power Output LOW | ||
| TS-10 | Engine RUns Rough at Idle | ||
| TS-11 | Engine Runs Rough or Misfires | ||
| TS-12 | Engine Speed Surges at Low or High Idlle | ||
| TS-13 | Engine Starts But Will Not Keep RUNMNING | ||
| TS-14 | Engine Transient RESPONSE POOM | ||
| TS-15 | Engine Vibration ExCessive | ||
| TS-17 | Engine Will Not Crank or Cranks Slowly (Air Starter) | ||
| TS-56 | White — Excessive.... | ||
| TS-58 | Turbocharger Leaks Engine Oil or Fuel... | ||
| Two blinks | Shutdown due to a loss of engine oil pressure | ||
| UNDER FREQUENCY | Shutdown lamp lights. MESSAGE: UNDER FREQUENCY 313 ï SHUTDOWN | Indicates that engine speed has dropped below 90% of nominal for 10 seconds. | NOTE: Five seconds before shutdown, a Load Dump signal is initi- tated. Contact an authorized service center. |
| V2 | Fault Code V2 | ||
| VR1 | Voltage Regulator VR1 | ||
| VR21 | Voltage Regulator VR21 is faulty | Voltage Regulator VR21 is faulty. | Check all connections against the applicable reconnection diagram (Page 7-11) and rewire as necessary. Replace the voltage regulator if the wiring is correct and there is no output voltage. |
| VR21 | Output voltage is too high or too low | Voltage Regulator VR21 is faulty | Replace the voltage regulator. |
| VR21 | Output voltage is unstable | Voltage Regulator VR21 is faulty | Replace the voltage regulator. |
| VR21 | The field circuit breaker keeps tripping — Voltage Regulator VR21 is faulty. | Voltage Regulator VR21 is faulty. | Replace the voltage regulator. |
| WARNING | Warning lamp lights. MESSAGE: OVERCURRENT 320 − WARNING Indicates that generator output current has exceeded 110% of rated for 60 seconds. | Check load and load lead connections. | |
| WARNING | Warning lamp lights. MESSAGE: OVERLOAD 330 − WARNING Indicates that three-phase power output exceeds 105% of standby (or 115% of prime) rating. After five seconds, the Load Dump output is activated. After 60 seconds, the OVERLOAD warning is activated. | Check load and load lead connections. | |
| WEAK BATTERY | Warning lamp lights. MESSAGE: WEAK BATTERY 232 − WARNING | A. Discharged or defective battery. See Warning message 230, LOW DC VOLTAGE. | |
| WEAK BATTERY 232 | Warning lamp lights. MESSAGE: WEAK BATTERY 232 − WARNING | Indicates battery voltage drops below 60% of nominal for two seconds, during starting. Discharged or defective battery. See Warning message 230, LOW DC VOLTAGE. | |
| Weak battery warning | Battery indicates impending failure | Control system tests the battery each time the genset is signaled to start | |
| yellow lamp | Low engine temperature fault circuit is energized | Power outage or power disconnect (blown fuses) | Check power source supplying the coolant heater. If coolant heater, sensor or engine monitor is suspected, contact an Onan Distributor. |
Compiled from Cummins/Onan service manuals and controller documentation. 400 code numbers mean different things on different controllers; each meaning is listed with the models it applies to. Cause/remedy shown where extracted; always verify against the manual for your exact model.
Engine Overfueling (Genset). Remedy: Check: Spark plugs; Fuel pressure at carburetor; Vacuum pull-off; Choke heater; then perform checks in step 01 — Check: Governor adjustments; Carburetor adjustments; then perform checks in step 02 — Check: Ignition coil; Ignition module.
Troubleshoot — No Output Voltage (Avr) (Genset). Cause: Load breaker closed; Broken or loose wires; AC output to load breakers; Field breaker CB21; Excitor field wiring. Remedy: Check load breaker closed; Check for broken or loose wires; Check AC output to load breakers; Check field breaker CB21; Check excitor field wiring.
Troubleshoot — Unstable Voltage Eng Stable (Genset). Cause: Connections to voltage regulator; Regulator wiring harness; Voltage regulator. Remedy: Check connections to voltage regulator; Check regulator wiring harness; Check voltage regulator.
Troubleshoot — High Exhaust Temp (Marine). Cause: Proper coolant flow out of exhaust; Exhaust temp switch for proper operation; Damaged exhaust temp switch; Plugged sea strainer; Damaged impeller. Remedy: Check proper coolant flow out of exhaust; Check exhaust temp switch for proper operation; Check for damaged exhaust temp switch; Check for plugged sea strainer; Check for damaged impeller.
Troubleshoot — Unbalanced Generator Output Voltage. Cause: Load at generator terminals; Generator lead connections; Generator stator windings. Remedy: Check load at generator terminals; Check generator lead connections; Check generator stator windings.
Troubleshoot − Engine Oil Leak. Cause: Oil level; Loose hose or drain fittings; Oil filter seal. Remedy: Clean contaminated area; Check oil level; Check for loose hose or drain fittings; Check oil filter seal.
Troubleshoot — Coolant Loss (External). Cause: Coolant level; Cracked or leaking hoses; Loose hose clamps; Radiator or heat exchanger for leaks; Coolant in oil. Remedy: Check coolant level; Check for cracked or leaking hoses; Check for loose hose clamps; Check radiator or heat exchanger for leaks; Check for coolant in oil.
Troubleshoot — Coolant Temp Above Normal. Cause: Engine coolant level; High engine temp switch; Fault breaker; Coolant level switch. Remedy: Check engine coolant level; Check high engine temp switch; Check fault breaker; Check coolant level switch.
Troubleshoot — Excessive Exhaust Smoke Under Load. Cause: Intake air restrictions; Overloaded generator; Valve settings. Remedy: Check intake air restrictions; Check for overloaded generator; Check valve settings.
Troubleshoot — Excess White Smoke At Start-Up (Warm). Cause: Glow plugs; Valve settings; Low engine operating temp. Remedy: Check glow plugs; Check valve settings; Check low engine operating temp.
Troubleshoot — Excess White Smoke At Start-Up (Cold). Cause: Glow plugs; Engine coolant heater; Valve settings. Remedy: Check glow plugs; Check engine coolant heater; Check valve settings.