Fisher & Paykel RF175W - General Fault Finding

321037
76
14 FAULT FINDING
14.1 Compressor Won't Start - Dead
Checks to be carried out:
1. Check the fuse and power outlet.
2 Check that there is the correct voltage from the power module to the compressor.
3. Continuity test the 3 pin plug, terminal block and the harness to the compressor.
4. Check the compressor windings.
14.2 Compressor Won't Start - Hums
Possible Causes:
1. The voltage may be low e.g. 10% low. Test the voltage under load.
2. System pressures may not be equalised; too short an off cycle.
14.3 Compressor starts, runs and then stops
Possible Causes:
1. Low voltage - high voltage.
2. Check the compressor voltage matches the supply voltage.
3. The system may be grossly overcharged. Liquid refrigerant entering the compressor low side
causes slugging of oil.
4. Check the current draw – if an overload is detected, the compressor will try to restart.
5. The high pressure side may be fully or partially blocked. Very high head pressure. This is
normally a blockage before the condenser.
6. The condenser may be too hot, e.g. air movement blocked or ambient temperature too high.
The refrigerator may be too close to a heating appliance.
7. Check the compressor pipe connections.