Trouble Shooting Operating & Maintenance Manual
53
Trouble Shooting Chart
Bold Headings depict the COMPLAINT - Subheadings indicate CAUSES
NOTE: Subheadings suggest sequence to follow troubleshooting.
Table 1: Unit Shutdown
Table 2: Won’t Start/Run:
Cause Corrective Action
Out of Fuel Add CLEAN diesel Fuel
Compressor Oil Level Too Low Add correct oil
Compressor Oil Temp. Too High See Table 10
Engine Water Temp. Too High Check coolant level. If necessary, Add.
Loose Wire Connection Wiggle wires at switches & connector blocks. Make repairs.
Low Fuel Level Shutdown Switch Replace switch.
Defective Discharge Air Temp. Switch Replace switch.
Defective Engine Oil Pressure Switch Replace switch.
Broken Engine Fan Belt Replace fan belt.
Engine Oil Pressure Too Low See Table 3 and Table 4.
Defective Shutdown Solenoid Replace solenoid.
Malfunctioning Relay Replace relay.
Blown Fuse Replace fuse/Check for Short.
* < 10 Volts at Shutdown Solenoid Check battery and alternator. Make repairs.
Engine Malfunctioning See Trouble Shooting in Engine Section.
Airend Malfunctioning See Table 10.
Cause Corrective Action
Out of Fuel Add CLEAN diesel Fuel
Clogged Fuel Filters Service filters.
Compressor Oil Level Too Low Add corrected oil
Loose Wire Connection Repair or replace connection.
Low Battery Voltage Check electrolyte level. Check connections.
* <10 Volts at Shutdown Solenoid Charge battery and alternator. Make repairs.
Defective Alternator Replace/Repair Alternator
Out of Fuel Add CLEAN fuel.
Engine Water Temp. Too High Check fluid level. If necessary, Add.
Malfunctioning Start Switch Replace switch.
Defective D2 Diode Replace D2 Diode.
Blown Fuse Replace fuse/Check for Short.
Engine Oil Pressure Too Low See Table 3 and Table 4.
Compressor Oil Temp. Too High See Table 10.
Defective Discharge Air Temp. Switch Replace switch.
Defective Engine Oil Pressure Switch Replace switch.
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