Troubleshooting
80Fault codes
| Code | Meaning |
|---|---|
| Wrn Oil press | Oil pressure is smaller than Wrn Oil press setpoint — WRN |
| Sd Oil press | Oil pressure is smaller than Sd Oil press setpoint — SD |
| Wrn Water temp | Water temperature is greater than Wrn Water temp setpoint — WRN |
| Sd Water temp | Water temperature is greater than Sd Water temp setpoint — SD |
| Wrn Fuel Level | Fuel level is smaller than Wrn Fuel Level setpoint — WRN |
| Sd Fuel Level | Fuel level is smaller than Sd Fuel Level setpoint — SD |
| Battery voltage | Battery voltage is out of limits given by Batt overvolt and Batt undervolt setpoints — WRN |
| Battery flat | If the controller switches off during starting sequence due to bad battery condition it doesn't try to start again and activates this protection — SD |
| Start fail | Gen-set start failed — SD |
| ParamFail | Wrong checksum of parameters. Happens typically after downloading new firmware or changing of the parameter. The controller stays in INIT |
| Vgen unbl | The generator voltage is unbalanced more than the value of Volt unbal setpoint — SD |
| Igen unbl | The generator current is unbalanced — SD |
| Short Igen | Generator current is over /short limit — SD |
| Sd IDMT | Active IDMT protection — SD |
| Overload | Active when the overload setpoint is exceeded — SD |
| RPM over | Protection comes active if the speed is greater than Overspeed — SD |
| RPM under sp | During starting of the engine when the RPM reaches the value of Start RPM setpoint the starter is switched off and the speed of the engine can drop under Start RPM again. Than the Underspeed protection comes active — Start |
| TotalStop | If the input Emergency stop is opened shutdown is immediately activated — SD |
| Stop fail | Generator set stop failed — SD |
| WrnServiceTime | The period for servicing is set by the NextServTime setpoint. The protection comes active if the running hours of the engine reach this value — WRN |
| ChrgAlternFail | Failure of alternator for charging the battery — WRN |
| Sd ECU R lamp | Indication of a shutdown from the ECU — SD |
| Not in auto | Indication that the operating “Mode” is not in the automatic position |
| 1P con fail | Improper sensing of single phase voltage. Single phase sensing in on L1 & L3 — WRN |
| Wrn FuelLevel1 | Threshold for low fuel. Must be > than FuelLevel2 setpoint — WRN |
Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| Engine will not crank | Battery discharged or faulty | |
| Engine will not crank | Battery charger (aux. AC powered) malfunctioned | |
| Engine will not crank | Corroded battery terminals | |
| Engine will not crank | Faulty starter motor | |
| Engine will not crank | Faulty starter solenoid | |
| Engine will not crank | Faulty start relay | |
| Engine will not crank | Engine in seized condition | |
| Engine rotates and will not start | Inadequate fuel/gas supply | |
| Engine rotates and will not start | Faulty fuel injection pump or carburetor | |
| Engine rotates and will not start | Faulty fuel transfer pump | |
| Engine rotates and will not start | Faulty gas solenoid | |
| Engine rotates and will not start | Natural gas pressure switch not reset (dual fuel units) | |
| Engine rotates and will not start | Loose or broken wire in fuel circuit | |
| Engine rotates and will not start | Faulty injectors/spark plugs | |
| Engine hard to start when cold | Battery discharged, low or faulty | |
| Engine hard to start when cold | Engine jacket water heater malfunctioned | |
| Engine hard to start when cold | “Gelling” in diesel fuel supply | |
| Engine hard to start when cold | Oil not changed to 5w30 below 0 F | |
| Engine lacks power (struggles) | Air filter clogged | |
| Engine lacks power (struggles) | Fuel filter (primary and/or secondary) clogged | |
| Engine lacks power (struggles) | Insufficient flowrate in fuel supply line | |
| Engine lacks power (struggles) | Faulty spark plugs | |
| Engine lacks power (struggles) | Improperly applied derating estimates (ambient temperature, altitude, etc.) | |
| Engine lacks power (struggles) | Low cylinder compression | |
| Battery will not hold a charge | Charge alternator's drive belt loose | |
| Battery will not hold a charge | Malfunctioning charge alternator | |
| Battery will not hold a charge | Battery charger (aux. AC powered) malfunctioned | |
| Battery will not hold a charge | Faulty Battery | |
| Engine overheats | Low coolant level | |
| Engine overheats | Loose fan drive belt | |
| Engine overheats | Faulty thermostats | |
| Engine overheats | Radiator cap faulty | |
| Engine overheats | Coolant blend incorrect | |
| Excessive vibration | Misalignment of engine and generator | |
| Excessive vibration | Unit installation improper | |
| Engine surges | Unit operating above load capacity | |
| Engine surges | Inadequate fuel supply | |
| Voltage absent at no load and start-up | Lack of residual magnetism | |
| Voltage absent at no load and start-up | AVR fuse blown | |
| Voltage absent at no load and start-up | AVR malfunction | |
| Voltage absent at no load and start-up | Faulty diodes | |
| Voltage absent at no load and start-up | Armature short circuit | |
| Output voltage remains low | Voltage-adjust potentiometer needs adjustment | |
| Output voltage remains low | AVR needs adjustment | |
| Output voltage remains low | Faulty AVR | |
| Output voltage remains low | Low engine speed | |
| Output voltage remains low | Field windings short circuited | |
| Output voltage remains low | Rotating diodes burnt out | |
| Output voltage remains low | Possible load mismatch to unit's ratings | |
| Voltage remains too high | AVR needs adjustment | |
| Voltage remains too high | Voltage-adjust potentiometer needs adjustment | |
| Voltage fluctuates or oscillates | Loose sensing connections | |
| Voltage fluctuates or oscillates | Faulty AVR | |
| Voltage fluctuates or oscillates | Engine speed low | |
| Voltage fluctuates or oscillates | Engine speed controller malfunction |
Fault codes and symptom→remedy steps extracted from this unit’s service/owner documentation; verify against the official manual before servicing. Showing the first 80 of 159 entries.
Available documents
Operator's manual
About
Ingersoll Rand S275 — air compressor. Specifications and parts compiled from manufacturer documents.