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15 SERVICE REFERENCE
15.1 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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