Troubleshooting
80Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| Unit Shutdown — Out of Fuel | Out of Fuel | Add CLEAN diesel Fuel |
| Unit Shutdown — Compressor Oil Level Too Low | Compressor Oil Level Too Low | Add correct oil |
| Unit Shutdown — Compressor Oil Temp. Too High | Compressor Oil Temp. Too High | See Table 10 |
| Unit Shutdown — Engine Water Temp. Too High | Engine Water Temp. Too High | Check coolant level. If necessary, Add. |
| Unit Shutdown — Loose Wire Connection | Loose Wire Connection | Wiggle wires at switches & connector blocks. Make repairs. |
| Unit Shutdown — Low Fuel Level Shutdown Switch | Low Fuel Level Shutdown Switch | Replace switch. |
| Unit Shutdown — Defective Discharge Air Temp. Switch | Defective Discharge Air Temp. Switch | Replace switch. |
| Unit Shutdown — Defective Engine Oil Pressure Switch | Defective Engine Oil Pressure Switch | Replace switch. |
| Unit Shutdown — Broken Engine Fan Belt | Broken Engine Fan Belt | Replace fan belt. |
| Unit Shutdown — Engine Oil Pressure Too Low | Engine Oil Pressure Too Low | See Table 3 and Table 4. |
| Unit Shutdown — Defective Shutdown Solenoid | Defective Shutdown Solenoid | Replace solenoid. |
| Unit Shutdown — Malfunctioning Relay | Malfunctioning Relay | Replace relay. |
| Unit Shutdown — Blown Fuse | Blown Fuse | Replace fuse/Check for Short. |
| Unit Shutdown — < 10 Volts at Shutdown Solenoid | < 10 Volts at Shutdown Solenoid | Check battery and alternator. Make repairs. |
| Unit Shutdown — Engine Malfunctioning | Engine Malfunctioning | See Trouble Shooting in Engine Section. |
| Unit Shutdown — Airend Malfunctioning | Airend Malfunctioning | See Table 10. |
| Won't Start/Run — Out of Fuel | Out of Fuel | Add CLEAN diesel Fuel |
| Won't Start/Run — Clogged Fuel Filters | Clogged Fuel Filters | Service filters. |
| Won't Start/Run — Compressor Oil Level Too Low | Compressor Oil Level Too Low | Add corrected oil |
| Won't Start/Run — Loose Wire Connection | Loose Wire Connection | Repair or replace connection. |
| Won't Start/Run — Low Battery Voltage | Low Battery Voltage | Check electrolyte level. Check connections. |
| Won't Start/Run — <10 Volts at Shutdown Solenoid | <10 Volts at Shutdown Solenoid | Charge battery and alternator. Make repairs. |
| Won't Start/Run — Defective Alternator | Defective Alternator | Replace/Repair Alternator |
| Won't Start/Run — Engine Water Temp. Too High | Engine Water Temp. Too High | Check fluid level. If necessary, Add. |
| Won't Start/Run — Malfunctioning Start Switch | Malfunctioning Start Switch | Replace switch. |
| Won't Start/Run — Defective D2 Diode | Defective D2 Diode | Replace D2 Diode. |
| Won't Start/Run — Blown Fuse | Blown Fuse | Replace fuse/Check for Short. |
| Won't Start/Run — Engine Oil Pressure Too Low | Engine Oil Pressure Too Low | See Table 3 and Table 4. |
| Won't Start/Run — Compressor Oil Temp. Too High | Compressor Oil Temp. Too High | See Table 10. |
| Won't Start/Run — Defective Discharge Air Temp. Switch | Defective Discharge Air Temp. Switch | Replace switch. |
| Won't Start/Run — Defective Engine Oil Pressure Switch | Defective Engine Oil Pressure Switch | Replace switch. |
| Won't Start/Run — Defective Shutdown Solenoid | Defective Shutdown Solenoid | Replace solenoid. |
| Won't Start/Run — Defective Engine Temp. Switch | Defective Engine Temp. Switch | Replace Switch |
| Won't Start/Run — Defective Separator Tank Temp Switch | Defective Separator Tank Temp Switch | Replace Switch |
| Won't Start/Run — Defective Low Fuel Shutdown Switch | Defective Low Fuel Shutdown Switch | Replace Switch |
| Won't Start/Run — Malfunctioning Relay | Malfunctioning Relay | Replace relay. |
| Won't Start/Run — Engine Malfunctioning | Engine Malfunctioning | See Trouble Shooting in Engine Section. |
| Won't Start/Run — Airend Malfunctioning | Airend Malfunctioning | See Table 10. |
| Engine Temperature Lamps Stays On — Dirty Cooler | Dirty Cooler | Clean exterior of cooler. |
| Engine Temperature Lamps Stays On — Operating Pressure Too High | Operating Pressure Too High | Reduce pressure to spec. |
| Engine Temperature Lamps Stays On — Recirculation of Cooling Air | Recirculation of Cooling Air | Close side doors. |
| Engine Temperature Lamps Stays On — Dirty Operating Conditions | Dirty Operating Conditions | Move unit to cleaner environment. |
| Engine Temperature Lamps Stays On — Out of Level >15 degrees | Out of Level >15 degrees | Relocate or reposition unit. |
| Engine Temperature Lamps Stays On — Ambient Temp. >125°F (52°C) | Ambient Temp. >125°F (52°C) | Above spec limit. |
| Engine Temperature Lamps Stays On — Loose Wire Connection | Loose Wire Connection | Repair or replace. |
| Engine Temperature Lamps Stays On — Broken Engine Fan Belt | Broken Engine Fan Belt | Replace fan belt set. |
| Engine Temperature Lamps Stays On — Malfunctioning Circuit Board | Malfunctioning Circuit Board | Replace circuit board. |
| Engine Oil Pressure Lamp Stays On — Low Oil Level | Low Oil Level | Add oil. |
| Engine Oil Pressure Lamp Stays On — Clogged Oil Filter Element(s) | Clogged Oil Filter Element(s) | Replace element(s). |
| Engine Oil Pressure Lamp Stays On — Out of Level >15 degrees | Out of Level >15 degrees | Relocate or reposition. |
| Engine Oil Pressure Lamp Stays On — Loose Wire Connection | Loose Wire Connection. | Repair or replace. |
| Engine Oil Pressure Lamp Stays On — Wrong Lube Oil | Wrong Lube Oil | See Engine Oil Spec. Change oil. |
| Engine Oil Pressure Lamp Stays On — Malfunctioning circuit board | Malfunctioning circuit board | Replace circuit. |
| Engine Oil Pressure Lamp Stays On — Engine Malfunctioning | Engine Malfunctioning | See Trouble Shooting in Engine Section. |
| Engine Temperature Lamps Stays Off — Bulb Burned Out | Bulb Burned Out | Replace circuit board. |
| Engine Temperature Lamps Stays Off — Shorted Wire (Hot) | Shorted Wire (Hot) | Repair short. |
| Engine Temperature Lamps Stays Off — Malfunctioning circuit board | Malfunctioning circuit board | Replace circuit board. |
| Engine Oil Pressure Lamp Stays Off — Bulb Burned Out | Bulb Burned Out | Replace circuit board. |
| Engine Oil Pressure Lamp Stays Off — Shorted Wire (Hot) | Shorted Wire (Hot) | Repair short. |
| Engine Oil Pressure Lamp Stays Off — Malfunctioning circuit board | Malfunctioning circuit board | Replace circuit board. |
| Alternator Lamp Stays On — Low Battery Voltage | Low Battery Voltage | Check electrolyte level. Add if necessary. |
| Alternator Lamp Stays On — Loose or Broken Belts | Loose or Broken Belts | Tighten or replace belt set. |
| Alternator Lamp Stays On — Check connectors. Clean & tighten. | Check connectors. Clean & tighten. | Recharge battery. |
| Alternator Lamp Stays On — Malfunctioning Alternator | Malfunctioning Alternator | Repair or replace alternator. |
| Alternator Lamp Stays On — Shorted wire (ground) | Shorted wire (ground) | Repair short. |
| Alternator Lamp Stays Off — Bulb Burned Out | Bulb Burned Out | Replace circuit board. |
| Alternator Lamp Stays Off — Loose Wire Connection | Loose Wire Connection | Repair or replace connector. |
| Alternator Lamp Stays Off — Malfunctioning circuit board | Malfunctioning circuit board | Replace circuit board. |
| Unit Fails To Shutdown — Defective Low Fuel Shutdown Switch | Defective Low Fuel Shutdown Switch | Pull wire off shutdown solenoid. Replace switch. |
| Unit Fails To Shutdown — Defective Discharge Air Temperature Switch | Defective Discharge Air Temperature Switch | Pull wire off. Replace switch. |
| Unit Fails To Shutdown — Defective Sep. Temp. Switch | Defective Sep. Temp. Switch | Replace switch. |
| Unit Fails To Shutdown — Defective Engine Temp. Switch | Defective Engine Temp. Switch | Replace switch. |
| Unit Fails To Shutdown — Defective Engine Oil Pressure Switch | Defective Engine Oil Pressure Switch | Pull wire off. Replace switch. |
| Unit Fails To Shutdown — Defective Shutdown Solenoid | Defective Shutdown Solenoid | Carefully block air inlet to stop engine. |
| Unit Fails To Shutdown — Malfunctioning Relay | Malfunctioning Relay | Replace relay. |
| Unit Fails To Shutdown — Defective Start Switch | Defective Start Switch | Pull wire off shutdown solenoid. Replace defective item. |
| Unit Fails To Shutdown — Wire Shorted Hot | Wire Shorted Hot | Repair short. |
| Excessive Compressor Oil Temperature — Dirty Cooler | Dirty Cooler | Clean exterior surfaces. |
| Excessive Compressor Oil Temperature — Low Oil Level | Low Oil Level | Add oil. Look for any leaks. |
| Excessive Compressor Oil Temperature — Clogged Oil Filter Elements | Clogged Oil Filter Elements | Replace elements. Change oil. |
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 155 entries.
Available documents
Operator's manual
About
Ingersoll Rand P105 — air compressor. Specifications and parts compiled from manufacturer documents.