Specifications
| Fuel | diesel |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 1 kW |
| Voltage options | 120 V, 240 V, 300 V, 480 V |
Filters & service parts
model family| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | find | |||
| Fuel filter | — | find | |||
| Oil filter | — | find | |||
| Belt | — | find | |||
| Coolant | — | ||||
| Oil | 3.7 L | — |
Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number.
Common questions
What is the power rating of the Cummins/Onan and?
The Cummins/Onan and is rated 1 kW standby.
What engine does the Cummins/Onan and use?
The Cummins/Onan and is powered by the Cummins/Onan INSTRUC engine.
What fuel does the Cummins/Onan and use?
The Cummins/Onan and runs on diesel.
Troubleshooting
42Fault codes
| Code | Meaning | Remedy |
|---|---|---|
| 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. 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 | 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. 19 | GOVERNOR ACTUATOR FAULT—CODE NO. 19 (Controller sensed open or short circuit) | Corrective Action: See an authorized Onan dealer. |
| NO. 22 | GOVERNOR ACTUATOR OVERLOAD FAULT—CODE NO. 22 (Duration of operation at or near full-duty cycle beyond design limit) | Corrective Action: Reduce the number of connected appliances, especially when air conditioners and battery chargers are running. |
| NO. 23 | LOW OIL PRESSURE CUTOFF SWITCH FAULT—CODE NO. 23 (Controller sensed switch still open during start—not a running fault) | Corrective Action: See an authorized Onan dealer. |
| NO. 24 | COOLANT TEMPERATURE SENDER FAULT—CODE NO. 24 (Controller did not sense temperature change during first 5 minutes of operation) | Corrective Action: See an authorized Onan dealer. |
| NO. 25 | ENGINE ABOVE SPEED TARGET FAULT—CODE NO. 25 (Governor unable to regulate to target speed) | Corrective Action: See an authorized Onan dealer. |
| NO. 26 | ENGINE BELOW SPEED TARGET FAULT—CODE NO. 26 (Governor unable to regulate to target speed) | Corrective Action: 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 | PMA SENSE LOST FAULT—CODE NO. 27 (Controller unable to sense PMA frequency) | Corrective Action: See an authorized Onan dealer. |
| NO. 28 | DC SENSE LOST FAULT—CODE NO. 28 (Controller unable to sense DC bus voltage) | Corrective Action: 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—CODE NO. 29 (Voltage across battery system greater than 17.5 volts) | Corrective Action: 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. 33 | HIGH ENGINE COOLANT TEMPERATURE FAULT—CODE NO. 33 | 1. Check the engine coolant level and add coolant and repair leaks as necessary (Page 20). 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. 34 | HIGH INVERTER TEMPERATURE FAULT—CODE NO. 34 | 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 FAILURE FAULT—CODE NO. 35 | See an authorized Onan dealer. |
| 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 | INVALID GENSET CONFIGURATION FAULT—CODE NO. 37 | See an authorized Onan dealer. |
| 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. 42 | PROCESSOR FAULT—CODE NO. 42 | See an authorized Onan dealer. |
| NO. 43 | PROCESSOR FAULT—CODE NO. 43 | 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. |
Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| THE ENGINE DOES NOT CRANK IN RUN MODE | The Emergency Stop switch has been used. (The switch button is lit.) A Fault Shutdown is being indicated by one of the red lights on the control panel. Fuel solenoid K1 is not functioning properly or is not adjusted properly. Cranking voltage is too low to crank the engine. The starter motor or solenoid is malfunctioning. Fuse F1 (see Figure 3-2) on engine monitor board A11 has blown (no voltage [12VDC] at A11-TB1-8). | Pull the Emergency Switch button. To reset the engine control, push the Run-Stop-Remote switch to Stop and the Reset switch to Reset. Then push the Run-Stop-Remote switch to Run. Service the set as necessary. To reset the engine control, push the Run-Stop-Remote switch to Stop and the Reset switch to Reset. Then push the Run-Stop-Remote switch to Run. 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. If the fuel solenoid pulls in but the engine does not crank, adjust the fuel solenoid linkage as instructed in Section 6. Governor. (Relay K12 in the starter circuit cannot pull in until fuel solenoid K1 pulls in and opens its set of normally closed contacts.) Replace the fuel solenoid if it does not pull in. a. Clean and tighten or replace the positive (+) and negative (–) battery cable connectors and cables at the battery and the set. b. Recharge or replace the battery. Specific gravity for a fully charged battery is approximately 1.260 at 80° F (27° C). c. If the set is in standby service, install a battery charger. d. Replace the engine-driven battery charging alternator if normal battery charging voltage is not between 12 and 14 volts. Push the Run-Stop-Remote switch to Run and check for battery voltage (12 VDC) at starter solenoid terminal SW. Replace the starter motor if there is voltage but the motor does not function. The wire between A11-TB1-8 and t |
| THE ENGINE CRANKS BUT DOES NOT START | 1. The engine is not getting fuel. 2. The air cleaner is blocked. 3. Low engine temperature is causing too low a cranking speed for starting. 4. Cranking voltage is too low to reach required cranking speed. 5. The preheat time delay is not long enough for the ambient temperature. 6. The glow plugs are not heating. | 1. Open any closed shutoff valve in the fuel line supplying the engine. a. Fill the main fuel supply tank. b. Restore fuel pump prime according to the Operator’s Manual. c. Adjust the fuel solenoid linkage as instructed in Section 6. 2. Service as necessary. 3. Plug in, repair or install engine coolant and engine oil heaters. 4. Replace the engine oil if it is not of the recommended viscosity for the ambient temperature. 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. 5. Adjust preheat/start delay module A15 for up to 15 seconds preheat time delay if permitted by the applicable Codes. See Section 3. DC Control. a. If none of the glow plugs gets warm, go to Step 7. b. If any glow plug gets warm, open the control box and check for 12 VDC at terminals A15-TB1-7 and A15-TB1-8 on the preheat/start delay module while the engine is cranking. If there is voltage at A15-TB1-8, but not at A15-TB1-7, replace preheat/start delay module A15. If there is voltage at A15-TB1-7, check for proper connections between A15-TB1-7 and terminal 85 on relay K13. 6. Push the Run-Stop-Remote switch to Run and check for battery voltage (12 VDC) at relay K13 terminals 85 and 87 while the engine is cranking. Replace relay K13 if there is voltage at terminal 85 but not at terminal 87. If there is voltage at terminal 87, 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. 7. The length of the fuel solenoid plunger link has not been adjusted properly. a. Adjust the length of the link according to the instructions in Section 6. Governor. 8. The engine fuel system is worn or malfunctioning or has lost prime (fuel lift pump, injection pump, injectors, timing). b. Service according to the engine service manual. 9. The engine is worn or malfunctioning mechanically. c. Service according to the engine service manual. |
| THE ENGINE RUNS UNTIL FAULT SHUTDOWN | 1. The OVERSPEED lamp comes on when the engine shuts down. | A. If this is a 60 Hertz set, check to see if the orange jumper on the overspeed module has been cut (Figure 3-5). If it has, replace the module. (Cutting the orange jumper lowers the cut-out point for 50 Hertz sets.) b. Reset engine monitor board A11 by pushing the Run-Stop-Remote switch to Stop and the Reset switch to Reset and restart the set, monitoring engine speed and adjust the governor according to Section 6, Governors. c. Mechanical Governor: Service or replace the injection pump unit if the set still shuts down due to overspeed. d. Electronic Governor: 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. (A spring inside the actuator will resist movement, which is normal.) e. 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 necessary. |
| Output voltage at cranking speed is less than 2.5 VDC as measured at terminals 10 and 11 on the governor controller. | Disconnect the actuator leads at governor controller terminals 4 and 5. Jumper the lead for terminal 4 to the BAT terminal on the starter solenoid and touch the lead for terminal 5 to a good ground on the block. Replace the actuator unit if it does not drive the linkage through its full travel when power is connected or return it when power is disconnected. | |
| The engine lacks power or is unstable | Fuel delivery to the set is inadequate, fuel is contaminated or of the wrong type, engine air filter element is dirty, governor adjustment is incorrect, engine fuel system (lift pump, injection pump, injectors, timing | Check for and replace clogged fuel lines and filters; check for air in the fuel lines and repair all air leaks; measure the vertical distance between the fuel lift pump on the engine and the bottom of the dip tube in the supply tank to make necessary provisions so that lift does not exceed 31.5 inches (0.8 metres); connect the set to a container of fuel of known quality and run the set under various loads, replace the contents of the fuel supply tank if there is a noticeable improvement in performance; replace the air filter element; adjust the governor according to Section 6, Governor; service the fuel injection unit according to the engine service manual if it cannot be adjusted for full power or stable speed; check for binding in the linkage and repair and adjust the linkage as necessary; 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 2.5 VDC as measured at terminals 10 and 11 on the governor controller. |
| GENSET WON’T STOP RUNNING—STATUS INDICATOR LIGHT ON | Faulty Stop Switch or grounded wiring | Try the genset Stop Switch if the remote Stop Switch does not work, and vice versa. Otherwise, let the genset run out of fuel. |
| GENSET WON’T STOP RUNNING—STATUS INDICATOR LIGHT OFF | Binding governor mechanism, misadjusted speed stop | Let the genset run out of fuel. |
| STATUS INDICATOR LIGHT STAYS ON | Reversed battery connections | Reconnect the battery correctly (Page 17). |
| ENGINE CRANKS WHEN BATTERY CONNECTED | Faulty Start Switch or grounded wiring | See an authorized Onan dealer. |
| ENGINE WON’T CRANK—FUEL PUMP WON’T STOP | Faulty Stop Switch or grounded wiring | See an authorized Onan dealer. |
| 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. Replace Fuse F1 (B+) if blown (Page 7). 3. Clean and tighten the positive (+) and negative (–) battery cable connections at the battery, vehicle frame and genset (Page 17). 4. Recharge or replace the battery. Refer to the battery manufacturer’s recommendations. |
| STARTING BATTERIES RUN DOWN | Marginal battery, battery connections, or charging system; or parasitic loads | 1. Clean and tighten the positive (+) and negative (–) battery cable connections at the battery, vehicle frame and genset (Page 17). 2. Recharge or replace the battery. Refer to the battery manufacturer’s recommendations. |
| ENGINE CRANKS BUT DOES NOT START | Fuel delivery, glow plugs or engine are marginal | 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. Replace Fuse F3 (glow plugs) if blown (Page 7). |
| STARTER ENGAGES-DISENGAGES | Cranking voltage dips below 6 volts—low battery charge, poor connections, long cables | 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 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. Increase battery cable size or run parallel cables. |
| NO POWER—GENSET RUNNING, RUN LIGHT ON | Line circuit breaker OFF or tripped or faulty wiring | Reset or turn “On” the line circuit breaker on the genset operator’s console. |
| GENSET HUNTS UNDER FULL LOAD | Fuel delivery marginal, governor misadjusted | Prime the engine fuel system by holding the control switch down in its Stop position for at least 1 minute. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Parts
29model family| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 110-1000 | Tube, Breather | 1 | Hose | PartsGeek |
| 141-0748 | Gasket Kit | 1 | Gasket | PartsGeek |
| 4-20 | EGR COOLANT PUMP | 1 | Pump | PartsGeek |
| 5-10 | SERPENTINE BELT REPLACEMENT | 1 | Belt | PartsGeek |
| 110-0672 | 1 | Service part / kit | PartsGeek | |
| 110-0872 | 1 | Service part / kit | PartsGeek | |
| 112-0170 | Piston and Pin (Includes Retaining Rings) | 1 | Service part / kit | PartsGeek |
| 112-0179 | 1 | Service part / kit | PartsGeek | |
| 113-0153 | 1 | Service part / kit | PartsGeek | |
| 113-0230 | 1 | Service part / kit | PartsGeek | |
| 113-0238 | 1 | Service part / kit | PartsGeek | |
| 114-0188 | Standard | 4 | Service part / kit | PartsGeek |
| 141-0721 | 141-0721 Carburetor) | 1 | Service part / kit | PartsGeek |
| 141-0722 | 141-0722 Carburetor) | 1 | Service part / kit | PartsGeek |
| 141-0747 | Repair Kit | 1 | Service part / kit | PartsGeek |
| 143-0340 | E - The 143-0340 Carburetor | 1 | Service part / kit | PartsGeek |
| 150-1080 | Linkage Assembly, (When purchased as a unit this assembly will replace all specs.) | 1 | Service part / kit | PartsGeek |
| 300-0734 | Cover, Controi Box | 1 | Service part / kit | PartsGeek |
| 334-0028 | (For Lead Use 334-0028 | 1 | Service part / kit | PartsGeek |
| 4-112 | Fuel Transfer Valve | 1 | Service part / kit | PartsGeek |
| 402-0349 | in 402-0349 | 1 | Service part / kit | PartsGeek |
| 7202-3005 | Series | Service part / kit | PartsGeek | |
| A042W166 | Service part / kit | PartsGeek | ||
| A042X605 | Service part / kit | PartsGeek | ||
| A042X608 | Service part / kit | PartsGeek | ||
| A042Y750 | Service part / kit | PartsGeek | ||
| A050G017 | Service part / kit | PartsGeek | ||
| A050G021 | Service part / kit | PartsGeek | ||
| A052B973 | Service part / kit | PartsGeek |
Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.
Available documents
Operator's manual — 928-0138 Cummins GGHG GGHH Operator's Manual (6-2001) (Cummins/Onan)Operator's manual — 928-0140 Cummins GGHE GGHF Operator's Manual (8-2003) (Cummins/Onan)Operator's manual — 949-0303 Onan DWV Operator's and Parts Manual (11-1974) (Cummins/Onan)Operator's manual — 960-0103 Cummins DFGA DFGB DFGE Operator's Manual (7-2010) (Cummins/Onan)Operator's manual — 960-0175 Cummins DFAB DFAC Operator's Manual (2-2013) (Cummins/Onan)Operator's manual — 981-0161B Onan HDKAJ HDKAK HDKAT HDKAU Mobile Genset Operator's manual (08-2005) (Cummins/Onan)Operator's manual — 981-0175C Onan MDKBK thru MDKBU Operator's Manual (1-2007) (Cummins/Onan)Operator's manual — 981-0519 Onan DKAC DKAE DKAF Operator's Manual (4-2001) (Cummins/Onan)Reference — 0961-0211 I27 202506 (Cummins/Onan)Reference — Каталог-Cummins-4BT3.9 (Cummins/Onan)Owner's manual — 0063388 (Cummins/Onan)Parts manual — 927-0223 Onan 10KW CCK CCKB (spec A-E) Genset Parts Manual (05-1989) (Cummins/Onan)Parts manual — 940-0310 Onan NH series RV Genset Operator's & Parts manual (06-1972) (Cummins/Onan)Parts manual — 960-0126 Onan DFV Operator's Manual (12-1977)Parts manual — 965-0102 Onan GCAA GCAB GCAC Operator's and Install Manual (7-1997)Parts manual — 981-0273C Onan HDKKB Spec A-C Parts Manual (4-2006) (Cummins/Onan)Service manual — 0057304 (Cummins/Onan)Service manual — 983-0101 Onan HGJAA HGJAB HGJAC RV GenSet Operator's manual (01-2009)