215 Generac generator fault/alarm codes with symptom, cause and remedy — compiled from Generac service and controller documentation.
| Code | Meaning / symptom | Cause | Remedy |
|---|---|---|---|
| (000139) | Low oil pressure shutdown | Low oil level | Verify oil level on dipstick. Add oil, if needed. |
| (000278) | High coolant temperature shutdown | Low coolant level | Add coolant if needed. Allow engine to cool, then check coolant level in radiator. Restart engine and check coolant temperature. Stop engine immediately if coolant temperature is 210°F (99°C) or more. |
| 0 | Utility failure | Crank and start engine, transfer load to Generator if Utility returns above 75% nominal for 15 seconds | |
| 000001 | DANGER | ||
| 000002 | AVERTISSEMENT | ||
| 000003 | MISE EN GARDE | ||
| 000100a | Consultez le manuel. | ||
| 000103 | Asphyxie. | ||
| 000105 | Explosion et incendie. | ||
| 000107 | WARNING Hearing Loss | ||
| 000108 | Surfaces chaudes. | ||
| 000111 | Pièces mobiles. | ||
| 000115 | Pièces mobiles. | ||
| 000130 | Démarrage accidentel. | ||
| 000137a | Explosion | ||
| 000141 | Accidental start-up. Disconnect spark plug wires when working on unit. | Disconnect spark plug wires before working on unit. | |
| 000146 | Dommages à l’équipement et aux biens. | ||
| 000149 | Risk of poisoning | ||
| 000151 | La branchement à une source de carburant doit être effectué par un technicien ou un entrepreneur professionnel qualifié. | ||
| 000155 | Seul un électricien formé et agréé devrait s’occuper du câblage et des connexions à l’appareil. | ||
| 000162 | Explosion | ||
| 000164 | Electrical shock | ||
| 000165a | Risk of overheating | ||
| 000178a | Asphyxie. | ||
| 000182 | Seul un technicien qualifié peut installer, utiliser et entretenir cet équipement. | ||
| 000182a | Equipment damage | ||
| 000187 | Electrocución. | ||
| 000190 | Loss of life. Property damage. | ||
| 000191 | DO NOT OPERATE | ||
| 000192 | Engine down | ||
| 000209a | Ce produit n’est pas conçu pour être utilisé dans un système de maintien de la vie. | ||
| 000209b | Danger de mort. Ce produit ne doit pas être utilisé dans une application critique de support de vie. | ||
| 000216 | Blessures et dommages à l’équipement. | ||
| 000218 | Explosion et incendie | ||
| 000228 | Environmental Hazard | ||
| 000231a | WARNING (000231a) | ||
| 000234a | WARNING Crushing hazard | ||
| 000235 | WARNING Property or Equipment Damage | ||
| 000237 | Retour d’énergie électrique. | ||
| 000247 | Cet appareil n’est pas conçu pour être utilisé comme source d’alimentation principale. | ||
| 000247a | ADVERTÊNCIA | ||
| 000278 | Mast Lights Off, but Ballast Indicators on Control Panel are On. | Light fixture is too hot. Faulty lamp connection. Lamp broken Loose lighting connections Damaged or loose electrical cord | Allow light to cool 10-15 minutes before restarting. Check that the lamp is tight in the socket. Check for broken arc tube or outer lamp jacket, broken or loose components in lamp envelope, or blackening/deposits inside tube. Check the connections inside the mast junction box and each mast light housing/socket. Check the mast electrical cord for damage and check the cord connections inside the control box. |
| 001063 | CAUTION Figure 4-1. Gearbox Oil Servicing Points | ||
| 001810 | Auxiliary Shutdown | ||
| 002404 | Inspect Spark Arrestor Screen | Inspect and clean the screen every 50 hours of operation or every season, whichever comes first. | |
| 005483 | Daños a los equipos y la propiedad. | ||
| 005492 | Daño para el equipo | ||
| 007634 | (000209b) Fallecimiento. Este producto no se ha diseñado para que se utilice en aplicaciones de apoyo vital crítico. En caso de hacerlo, podría provocar la muerte o lesiones graves. | ||
| 007843 | OUTPUT FAULT | ||
| 007846 | Output Fault | ||
| 008034 | Fault Output M | ||
| 009209 | Puesta en marcha automática | ||
| 057-243 | Generator Under Volts gives a warning alarm in the event of the generator output falling below the configured Under Volts Pre-Alarm Trip value for longer than the Activation Delay. | ||
| 0F9677 | Engine won’t crank. | Replace fuse. | |
| 0G0008 | Engine cranks but won't start | Tighten, clean or replace battery cables; replace starter contactor or motor; replace battery if dead. | |
| 0G0056 | Engine cranks but won't start | Tighten, clean or replace battery cables; replace starter contactor or motor; replace battery if dead. | |
| 1 | Ignition cannot initialize | 1. Replace fuse. 2. Tighten, clean or replace battery cables as necessary. 3. Replace contactor.* 4. Replace starter motor.* 5. Remove, change or replace battery. 6. Replace fuse.* | |
| 10 | Defective Low Coolant Level Switch | ||
| 10 kW | Auto/Off/Manual switch is set to OFF, but the engine continues to run. | ||
| 11 | Defective AUTO/OFF/MANUAL switch | ||
| 11 kW | There is no AC output from the generator. | Reset circuit breaker to ON (or closed). | |
| 12 | Open/disconnected wire #15A between AUTO/OFF/MANUAL switch and Control Module circuit board. | ||
| 12 kW | There is no transfer to standby after utility source failure. | ||
| 12-1 | No AC output from generator | Main line circuit breaker is tripped/open. Generator internal failure. Thermal circuit breaker open. | |
| 13 | Engine starts then shuts down. | ||
| 13 kW | Unit consumes large amounts of oil. | ||
| 14 | Output Fault | ||
| 14 AMP (F1) FUSE BLOWING | ENGINE WILL NOT CRANK | ||
| 1501 | RPM Sensor ALARM | ||
| 18 | Oil Level Low | Add oil to the specified level before restarting. | |
| 19 | Overload | Reduce load or check if the generator is overloaded. | |
| 1900 | Prolonged Over-Voltage Undervoltage | ||
| 1901 | Instantaneous Undervoltage | ||
| 1902 | Undervoltage | ||
| 2 | Engine Overspeed | 1. Replenish fuel. 2. Replace solenoid.* 3. Reconnect wire. 4. Clean, regap or replace plugs. 5. Close door on tank. | |
| 2099 | Wiring Error ALARM | ||
| 2100 | Stepper Overcurrent ALARM | ||
| 2102 | Overloaded ALARM | ||
| 22 | Oil Level Low | Add oil to the specified level before restarting. | |
| 23 | Electrical Trip | Check the system for any faults and correct them before restarting. | |
| 2399 | Overload Remove Load ALARM | ||
| 3 | No Crank Signal | ||
| 4 | No Cam Signal | ||
| 5 | Engine is overheated. | ||
| 6 | Defective Low Oil Pressure Switch | ||
| 7 | Defective Coolant Temperature Switch | ||
| 7 kW | Engine will not crank. | Replace 15A fuse in generator control panel. | |
| 7.5 AMP (F1) FUSE BLOWING | ENGINE WILL NOT CRANK | ||
| 8 | Defective Control Module circuit board | ||
| 8 kW | Engine cranks but will not start. | Tighten, clean or replace as necessary. | |
| 801 | Engine will not crank | Correct short circuit condition, replace 7.5A fuse in generator control panel. Tighten, clean or replace battery cables as necessary. Replace defective starter contactor or motor. | |
| 802 | Engine cranks but will not start | Replenish fuel/Turn on fuel valve. Replace defective fuel solenoid or open #14 wire from engine control board. Clean, re-gap or replace spark plugs as necessary. Reset valve lash. Verify choke plate moves freely. | |
| 803 | Engine starts hard and runs rough | Check, replace air cleaner as necessary. Clean, re-gap or replace spark plugs as necessary. Confirm fuel pressure to regulator is 10-12” water column (0.36-0.43 psi) for LP, and 5-7” water column (0.18-0.25 psi) for natural gas. Move selector to correct position. Verify choke plate moves freely. | |
| 804 | AUTO/OFF/MANUAL switch is set to OFF, but the engine continues to run | ||
| 805 | There is no AC output from the generator | Reset circuit breaker to ON (or CLOSED). Contact nearest Dealer for assistance. | |
| 806 | There is no transfer to standby after utility source failure | ||
| 807 | Unit consumes large amounts of oil | Adjust oil to proper level. See 'Engine Oil Recommendations'. Check for oil leaks. | |
| 9 | Coolant Level is Low. | ||
| 9 kW | Engine starts hard and runs rough. | ||
| 9202-1 | Bottom out | ||
| 9203-1 | Bottom out | ||
| 9204-1 | Bottom out | ||
| 9205-1 | Bottom out | Out-the-side | ||
| 9206-1 | Bottom out | Out-the-side | ||
| 9207-1 | NP 6600 120/240 55/27 60 3600 | 2300 | Bottom out |Out-the-side| 89405 | ||
| 9290-2 | Bottom out | Bottom out | ||
| 9509-2 | 6600 | ||
| 9592-1 | 5500 120/240 Bottom out Universal | ||
| 9592-2 | 5500 | ||
| 9593-1 | 7000 120/240 Bottom out Universal | ||
| 9593-2 | 7000 120/240 Bottom out | Universal | ||
| 9600-0 | NP 6600 120/240 55/27 60 3600 | 2700 | Bottom out | Universal 92116 | ||
| 9600-1 | 6600 120/240 Bottom out Universal | ||
| 9600-2 | 6600 | ||
| 9677-1 | 7200 120/240 Bottom out Universal | ||
| 9677-2 | 7000 120/240 Bottom out Universal | ||
| 9677-3 | Q 7000 120/240 58/29 60 3600 | 2570 | Bottom out | Universal 92116 | ||
| 9677-4 | Q 7000 120/240 58/29 60 3600 | 2570 | Bottom out | Universal 92116 | ||
| 9712-0 | NP 5000 120/240 41/20 60 3600 | 2751 Bottom out | Universal 92116 | ||
| 9712-1 | NP 5000 120/240 41/20 60 3600 | 2751 Bottom out | Universal 92116 | ||
| 9734-1 | NP 6600 120/240 55/27 60 3600 | 2700 | Bottom out | Universal 92116 | ||
| 9735-1 | Q 5500 120/240 46/23 60 3600 | 2570 | Bottom out | Universal 92116 | ||
| 9736-1 | Q 7000 120/240 58/29 60 3600 | 2570 | Bottom out | ||
| 99 | Maintenance Required | ||
| Al | Non-shut down alarm | ||
| Battery Under/Over Voltage | Engine’s DC supply has fallen below or risen above its configured alarm level. | ||
| Battery is Dead | Problem 22 – Battery is Dead | Test 45 – Check Battery and Cables | |
| C1 | Low Oil Pressure Shutdown | Check the engine oil level. | |
| C2 | High Temperature Shutdown | ||
| C4 | Low Voltage Shutdown | Disconnect all loads the generator might power by whatever means provided, such as the recreational vehicle’s main circuit breaker. | |
| Check Engine Fault | A fault not recognized by the controller has been detected. | ||
| EST 1 | Ac OUTPUT VOLTAGE | ||
| EngProt001 | Overcrank Shutdown | Overcrank LED will turn ON. Turn OFF the AUTO/OFF/MANUAL switch, then turn switch back to AUTO to reset the generator control board | |
| Evolution E-Code 2400 | Engine Will Not Crank When Utility Power Source Fails | Test 44 – Check 7.5 Amp Fuse Evolution Alarm Code 2400 | |
| FAULT_01 | Generator Produces Zero Voltage or Residual Voltage | ||
| FAULT_02 | Generator Produces Low Voltage at No-Load | ||
| FAULT_03 | Generator Produces High Voltage at No-Load | ||
| FAULT_04 | Voltage and Frequency Drop Excessively When Loads Are Applied | ||
| FC | ECU alarm FailureCode | ||
| FIRE | FIRE | ||
| FXXX | Indicates a fault state. The DVR stops providing excitation. | ||
| FuelSys006 | Fuel System Fault | ||
| GenTHDHigh | High Total Harmonic Distortion (THD) Measured THD is above 25% | Generator power output is not stable and having high THD (THD means total harmonic distortion, which is a metric to measure the power quality. If the THD is high, the performance of your electronics will be affected; for example, you may see flickering lights). | |
| Generator Will Not Exercise | Problem 20 – Generator Will Not Exercise | Test 45 – Check Battery and Cables | |
| GeneratorStartFailed | Generator not starting | The generator does not start as selected in user preferences. | Check if the generator 2-wire start/stop wiring to IQ System Controller is loose. Check whether the generator breaker at the unit was tripped (if so turn the breaker off and then on. Also switch the controller to the auto position), whether the generator is out of fuel, or the starting battery of the generator was dead. Contact your installer or Enphase customer support if the problem persists. |
| GeneratorStopFailed | Generator not stopping | Generator continues to run even though user preferences indicate it should have stopped. | Check if the generator 2-wire start/stop wiring to IQ System Controller is loose. Turn off the generator manually and contact installer or Enphase customer support. |
| H01 | Low Coolant Level | Add coolant to the proper level. | |
| H02 | High Coolant Temperature | Reduce load or allow engine to cool. | |
| H03 | Low Engine Oil Pressure | Check and add oil if necessary, or replace oil filter. | |
| H04 | Overspeed Shutdown | Reduce load immediately to prevent engine damage. | |
| H05 | Overcrank Shutdown | Check fuel system and ignition components. | |
| H06 | RPM Sensor Loss Shutdown | Check RPM sensor connections and replace if necessary. | |
| H07 | Low Fuel Pressure Warning | Check fuel system for leaks or blockages. | |
| HTO | High Temp Switch | ||
| IDMT ALARM | If the Over Current IDMT Alarm is enabled, the controller begins following the IDMT ‘curve’ when the current on any phase passes the Trip setting. If the Trip is surpassed for an excess amount of time, the IDMT Alarm triggers (Shutdown or Electrical Trip as selected in Action). The larger the over circuit fault, the faster the trip. | Generator current exceeds the trip level and remains above it for a duration that surpasses the set threshold. | |
| IMMEDIATE WARNING | If the Immediate Warning is enabled, the controller generates a warning alarm as soon as the Trip level is reached. The alarm automatically resets once the generator loading current falls below the Trip level (unless All Warnings are latched is enabled). | Generator current exceeds the trip level. | |
| LOP | Low Oil Pressure Switch | ||
| LOW FUEL LEVEL SHUT DOWN | Engine automatically shuts down. | Fuel level is low, fuel tank has leaks, or fuel level sender is damaged. | Check the fuel level on the LCD window. Confirm that the generator is sitting level to ensure an accurate reading. Check for leaks in the fuel tank. If the fuel level is good and no leaks are found, check the fuel level sender and the connecting wiring for damage. |
| Low Fuel Level | Engine’s fuel level has fallen below its configured low fuel level alarm. | ||
| Low Oil Pressure | Engine oil pressure has fallen below its configured low oil pressure alarm level. | ||
| M01 | Low Oil Pressure Shutdown | Check the engine oil level. If necessary, add oil to the FULL mark. | |
| M02 | High Temperature Shutdown | ||
| M03 | Overspeed Shutdown | Do not attempt a manual adjustment to control engine speed. | |
| M04 | Low Voltage Shutdown | ||
| Mains Earth Fault | Generator earth fault current rose above the Mains Earth Fault Trip Level for the duration of the IDMT function. | ||
| Mains Over Current | Mains output current rose above the Mains Over Current Trip level. | ||
| Mains Phase Seq Wrong | Phase rotation of mains was different to configured Mains Phase Rotation Alarm setting. | ||
| Menu | Menu | ||
| No Low Speed Exercise | Problem 21 – No Low Speed Exercise | ||
| OC | Field boost voltage is available. | ||
| Over Speed Alarm | Shutdown alarm in the event of the engine speed rising above the configured Over Speed Alarm Trip value for longer than the Activation Delay. | ||
| Over Speed Pre-Alarm | Warning alarm in the event of the engine speed rising above the configured Over Speed Pre-Alarm Trip value for longer than the Activation Delay. The Warning is automatically reset when the engine speed falls below the configured Return level. | ||
| Overspeed | Engine speed has risen above its configured overspeed alarm level. | ||
| P0300 | Cylinder Misfire Detected | ||
| P1034 | Oxygen Sensor has not toggled between indicating lean and indicating rich for at least 1 minute | ||
| Problem 18 | Shutdown Alarm/Fault Occurred | ||
| QA | W WARNING | ||
| Run Away | In the event of the generator output frequency rising above the configured Trip value, the Run Away Shutdown alarm is immediately triggered. This is used to protect against engine damage due to uncontrolled speed increase. | Generator output frequency exceeds the configured trip value. | |
| S1 | Overspeed Shutdown | Do not attempt a manual adjustment to control the engine speed. | |
| SD | Shut down alarm | ||
| Safety 001 | DANGER | Not stated | |
| Safety-001 | Not stated | Not stated | |
| Safety001 | Do Not Operate | ||
| Safety004 | Do Not Operate | Generator will automatically restart and the LED will reset once the temperature has returned to a safe operating level | |
| Short Circuit IDMT Alarm | Generator output current rose above the Short Circuit Trip for the duration of the IDMT function. | ||
| T1 | High Temperature Shutdown | ||
| TDN | HTS has detected utility present, but loss of communications with the H-100 Control Panel. | ||
| TEST 10 | STATOR AC GOOD | ||
| TEST 11 | TEST Rotor Brushes AND Wires No. 1 & 4 BOOST | ||
| TEST 12 | CHECK FIELD | ||
| TEST 13 | CHECK SLIP RINGS 1 AND 4 | ||
| TEST 14 | RECONNECT, REPAIR OR REPLACE BAD WIRE(S) OR PART(S) | ||
| TEST 15 | CHECK BOTH VOLTAGE AND FREQUENCY | ||
| TEST 16 | ADJUST ENGINE GOVERNOR | ||
| TEST 17 | CHECK VOLTAGE REGULATOR | ||
| TEST 18 | UNIT IS NOT OVERLOADED | ||
| TEST 19 | REPAIR ENGINE POWER | ||
| TEST 2 | VOLTAGE REGULATOR LAMPS | ||
| TEST 3 | REPLACE VOLTAGE REGULATOR | ||
| TEST 4 | TEST EXCITATION CIRCUIT BREAKER | ||
| TEST 5 | TEST EXCITATION WINDING | ||
| TEST 6 | TEST THERMAL PROTECTOR | ||
| TEST 7 | TEST EXCITATION LEADS | ||
| TEST 8 | REGULATOR TEST & ADJUST | ||
| TEST 9 | CHECK SENSING LEADS TRANSFORMER POWER WINDINGS | ||
| Trblsht003 | Defective Control Module circuit board | Replace board. | |
| UNDERSPEED - 6 FLASHES OF LED | 6 flashes of LED | Please reference Appendix 1, Troubleshooting, if this fault occurs. | |
| Under Speed Alarm | Shutdown or Warning depending on configuration: The engine speed falling below the configured Under Speed Alarm Trip value for longer than the Activation Delay. | ||
| Underspeed | Engine speed has fallen below its configured underspeed alarm level. | ||
| V1 | Low Voltage Shutdown | ||
| W000146 | Do not alter construction of, installation, or block ventilation for generator. Failure to do so could result in unsafe operation or damage to the generator. | ||
| W000163 | Do not open or mutilate batteries. Batteries contain electrolyte solution which can cause burns and blindness. If electrolyte contacts skin or eyes, flush with water and seek immediate medical attention. | ||
| W000209 | Loss of life. | ||
| YELLOW | Yellow LED illuminated in any state. | Check the screen for additional information. Perform SERVICE A maintenance. Press ENTER to clear. | |
| null | The door covering the customer connection lugs/cam lock receptacles is opened. |
Compiled from Generac service manuals and controller documentation. Cause/remedy shown where extracted; always verify against the manual for your exact model.
Low oil pressure shutdown. Cause: Low oil level. Remedy: Verify oil level on dipstick. Add oil, if needed..
High coolant temperature shutdown. Cause: Low coolant level. Remedy: Add coolant if needed. Allow engine to cool, then check coolant level in radiator. Restart engine and check coolant temperature. Stop engine immediately if coolant temperature is 210°F (99°C) or more..
Utility failure. Remedy: Crank and start engine, transfer load to Generator if Utility returns above 75% nominal for 15 seconds.
Accidental start-up. Disconnect spark plug wires when working on unit.. Remedy: Disconnect spark plug wires before working on unit..