The Electronic Governor is a generator-set controller. It is used on generator sets from Caterpillar, Cummins/Onan, Kohler, Kubota, Tambau Motores and enka.com.tr, including the 3516, 3516E-HPD, DF and 7CCFKM.
Used across brands: Caterpillar, Cummins/Onan, Kohler, Kubota, Tambau Motores, enka.com.tr
Also fitted to: enka.com.tr X2200.
| Code | Meaning | Cause | Remedy |
|---|---|---|---|
| *4 | Green RUN lamp lights following engine start-up. | 7. Indicates all engine systems are normal. No corrective action required. | |
| 10 | LO FUEL lamp lights. Engine shuts down and LO OIL PRES lamp lights. | 10. Indicates engine has run out of fuel. Check fuel level and replenish as required. | |
| 11 | 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.) Indicates engine coolant heater is not operating or is not circulating coolant. Check for the following conditions: 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 Onan Dealer or Distributor if none of the above. | |
| 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. | |
| 3 | HI ENG TEMP lamp lights. Engine shuts down. | 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. | |
| 4 | PRE LO OIL PRES lamp lights. Engine continues to operate. | 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. | |
| 5 | LO OIL PRES lamp lights. Engine shuts down. | 5. Indicates engine oil pressure has dropped to 14 psi (97 kPa). Check oil level, lines and filters. If oil system is okay but oil level is low, replenish. Reset control and restart. Contact an Onan Dealer or Distributor if oil pressure is not in the range of 50 to 70 psi (345 to 483 kPa). | |
| 6 | OVERCRANK lamp lights and engine stops cranking. | 6. 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 (see MAINTENANCE section). c. Check for dirty or plugged air filter and replace if necessary (see MAINTENANCE section). d. Refer to Step 5. e. Reset the control and restart after correcting the problem. Contact an Onan Dealer or Distributor for service if none of the above. | |
| 7 | Engine runs and then shuts down, OVERSPEED lamp lights. | 7. Indicates engine has exceeded normal operating speed. Contact an Onan Dealer or Distributor for service. | |
| 72 | Overspeed | ||
| 8 | SWITCH OFF lamp flashes. | 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. | |
| 9 | LO FUEL lamp lights. Engine continues to run. | 9. Indicates diesel fuel supply is running low. Check fuel supply and replenish as required. | |
| Generator overvoltage | Generator overvoltage. | A. Replace SCR block. b. Replace voltage regulator. | |
| 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. | |
| K1 relay LED | Engine Run Relay | ||
| K2 relay LED | Engine Crank Relay | ||
| K3 relay LED | AC Crank Disconnect Relay | ||
| K4 relay LED | Fault Shutdown Relay | ||
| K5 relay LED | Time Delay Control (Start/Run) | ||
| LOP | Low Oil Pressure | ||
| 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. |
| Symptom | Cause | Remedy |
|---|---|---|
| "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. | . 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 light ON. No shutdown. | . Disconnect wire at TB11-30. Light ON after relay reset. Replace engine monitor board. | |
| "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. | |
| "Overspeed light on, no shutdown. | . Disconnect wire at TB11-29. Light on after reset; replace engine monitor board. | |
| *High engine temperature light ON. | 8. Disconnect wire at TB11-31. Light ON after relay reset. Replace engine monitor board. | |
| *Low oil pressure light ON. | 7. Disconnect wire at TB11-30. Light ON after relay reset. Replace engine monitor board. | |
| AC circuit breaker tripping due to overload on generator set | Reduce load (see Wattage Requirements) | |
| ALTERNATOR FAILS TO CHARGE OR PUTS OUT LOW OR UNSTEADY CHARGE RATE | Faulty regulator. | Replace regulator. |
| Bad or stale fuel | Replace | |
| Both Field Rectifiers are defective. | Test rectifiers and replace both if defective. | |
| Carbon build-up | Have unit serviced by an authorized Kohler service dealer/distributor | |
| Carburetor adjustment wrong | Adjust | |
| Defective battery charging alternator | Contact generator service dealer/distributor | |
| Engine fails to start after a few seconds of cranking, or starts and runs then stops and fault lamp lights | Refer to appropriate troubleshooting chart Table 4 or Table 5 | |
| Engine overload | Reduce load | |
| Engine runs, shuts down and cranks for 75 seconds. Cranking cycle stops; fault lamp lights. | . Check fuel supply. | |
| Engine runs, shuts down and cranks for 75-seconds. Cranking cycle stops; fault lamp lights. | 1. Check for dirty fuel filters and replace if necessary. (See MAINTENANCE section) 2. Check for dirty or plugged air filters and replace if necessary. (See MAINTENANCE section) | |
| Engine runs, shuts down, cranks for 75 seconds, cranking cycle stops, overcrank light ON. | . Check fuel supply. | |
| Engine runs, shuts down, cranks for 75-seconds, cranking cycle stops, light ON. | Check fuel supply. | |
| Engine runs, shuts down, cranks for 75-seconds, cranking cycle stops, overcrank light on. | 1. Check for dirty fuel filters and replace if necessary. (See MAINTENANCE section) 2. Check for dirty or plugged air filters and replace if necessary. (See MAINTENANCE section) | |
| 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 Onan Dealer or Distributor if breaker trips after resetting. | |
| Engine stops cranking and fault lamp lights, after cranking approximately 75 seconds. | . See engine service manual for troubleshooting fuel system. After correcting problem, reset engine monitor relay by placing Run-Stop/Reset-Remote switch to Stop/Reset, then back to the required running position. | |
| Engine will not crank | Weak or dead battery, 15-amp controller fuse blown, Defective start/stop switch, Remote start cable disconnected, Defective starter solenoid, Battery connections made in reverse | Recharge or replace the battery, Replace the fuse, Replace the start/stop switch, Reconnect the remote start cable, Replace the defective starter solenoid, Correct the battery connection (circuit board replacement may be necessary) |
| 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 battery. Recharge or replace the battery. d. Contact an Onan Dealer or Distributor for assistance if none of the above. |
| Engine will not start | Out of fuel, Clogged fuel filter | Replenish the fuel, Replace the clogged fuel filter |
| Fault lamp lights - no fault condition exists. | Be certain that no fault condition exists. Disconnect lead 30 and 31 from T B I l inside control box (refer to wiring diagram). If fault lamp still lights with leads disconnected, remove and replace engine monitor plug-in printed circuit board. | |
| Fault lamp lights after engine is running. | Check the following: a. Oil level-engine will shut down after approximately 12-1/2 seconds if low oil pressure sensor does not open. b. Oil pressure sensor may be defective. c. High engine temperature - See engine service manual. d. Faulty high engine temperature sensor. e. Faulty starter disconnect. | |
| Fault lamp lights and engine shuts down after running for a period. | . Check the following: a. Oil level. Engine will shut down if sensor is closed. b. Check engine manual for troubleshooting oil system. c. High engine temperature. Check coolant level; check water flow (city water cooled systems); check radiator for free air flow, and fan belts for tightness. See engine manual for troubleshooting cooling system. d. Check for faulty oil pressure sensor or faulty high engine temperature sensor. | |
| Fault lamp lights and engine stops cranking after approximately 75 seconds. | See engine service manual for troubleshooting fuel system, ignition system, etc. After correcting problem, reset the engine monitor by holding run-stop-remote switch in stop position, and depressing reset switch. Release and return to run position. | |
| Fault lamp lights and engine stops cranking after approximately 75-seconds. | See engine service manual for troubleshooting fuel system. After correcting fault, reset engine monitor relay by placing Run-Stop/Reset-Ret-Remote switch to Stop/Reset position, depressing Reset button, then to the required running position. | |
| 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 Onan Dealer or Distributor for service. |
| Fault lamp lights immediately after engine starts and unit shuts down. | Indicates possible overspeed condition | 1. Check the governor and throttle linkage for binding and freedom of movement. Contact an Onan Distributor or the engine manufacturer if linkage is not at fault. |
| Fault lamp lights immediately after engine starts. | . Overspeed condition as engine starts. | |
| Fault lamp lights, no fault exists. | . To check a no-fault condition, disconnect leads from TB11 terminals. 29, 30 and 31. If fault lamp lights with leads disconnected, replace engine monitor board. Reconnect leads. | |
| Fault lamp tights and engine shuts down after running for a period. | 1. Check oil level and replenish if necessary. 2. Check coolant level of radiator and heat exchanger sets and replenish if necessary. 3. Check for slipping drive belts or for obstructions to the airflow. 4. Check water flow valve on city water cooled sets and adjust if necessary. 5. Contact an Onan Distributor or the engine manufacturer if none of the above. | |
| Faulty spark plug | Replace or regap spark plugs | |
| General malfunction such as faulty component or other internal fault | Contact generator service dealer/distributor for repairs | |
| Generator will not build up voltage. | Circuit breaker in 'off' or 'tripped' position, Open in circuit breaker | Reset and close breaker; Stop plant and check breaker continuity. |
Fault codes and symptom→remedy steps extracted from this controller’s service/owner documentation; verify against the official manual before servicing. Aggregated from the service documentation of generator sets built on this controller.