83
16 SERVICE REFERENCE
PROBLEM POSSIBLE CAUSES WHAT TO DO
PC Too Cold.
Cold Crispers. Ambient heater open
circuit.
• Check I/O Fault Log.
• Check continuity of element using multimeter.
Ice In Crispers. PC fan fitted upside
down.
• Fan hub with label on to be facing PC.
PC fan not going.
• Check I/O Fault Log.
• Check voltage to plug, check wiring polarity.
Air leakage base duct
cover.
• Seal with foam tape on duct divider spigot.
PC sensor location.
• Remove insulation pad.
Cold
Compartment
Warm Top.
PC fan not going.
• Check I/O Fault Log.
• Check for mechanical obstruction.
• Check power to plug.
• Check polarity.
• Replace fan.
• Check for broken wires.
Total
Compartment
Too Cold.
FC fan not going.
• Check I/O Fault Log.
• Check power to plug.
• Check for broken wires.
• Check polarity.
• Replace fan.
Short of gas.
• Check run percentage, if high check
evaporator.
• Check fully flooded evaporator, check for leak.
PC sensor inaccurate.
• Check calibration of sensor ice point using
interface binary or refer to thermistor
resistance table in service manual.
PC Too Warm.
Warm
Compartment
Cool Bottom.
PC fan not going.
• Check I/O Fault Log.
• Check power to plug.
• Check polarity.
• Check for broken wires.
• Replace fan.
• Check fan is not jammed with ice or anything
else.
PC fan upside down.
• Fan hub with label on to be facing PC. Refit.
Return duct iced up.
• De-ice duct area behind chassis.
• Check PC duct insulation for good seal in
return duct.
• Check doors are sealing.
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