Fisher & Paykel RF175W Service Manual page 84

321037
PROBLEM
Total
Compartment
Warm.
FC Too Cold.
Total
compartment too
cold
FC Too Warm.
Bottom warm top
frozen.
Total
compartment
warm.
POSSIBLE CAUSES
PC duct blocked.
Evaporator ice up.
No refrigeration.
Fans not working.
Power/control module
failure.
FC sensor location
Faulty sensor
PC fan not going.
Iced up evaporator.
PC fan not going.
No refrigeration.
WHAT TO DO
• Defrost evaporator chassis.
• Check for door seal.
• Check defrost element, check continuity.
• Check door seal/door left open.
• Does cabinet run? If no, check power supplies.
If yes, check refrigeration system. If running,
check for live frost/fully flooded evaporator. If
not, check for leak.
• Check I/O Fault Log.
• Is there a 12Volt supply, PC lights working?
If yes, check fan connection(s) at fan end, also
at power module end of the harness.
If no, check for power/control module failure.
• Is the display lighting up?
• If not check display module connection.
• If OK, is compressor running?
• If not replace power module.
• Check set temperature.
• Sensor clipped and located in correct position?
• Check calibration of sensor ice point using
interface binary or refer to thermistor resistance
table in service manual.
• Check I/O Fault Log.
• Check for mechanical obstruction.
• Check power to plug.
• Check polarity.
• Replace fan.
• Check for broken wires.
• Check defrost element is working, replace if
faulty.
• Check doors are sealing or have they been left
open? Adjust and advise customer.
• FC fan jammed? Clear restriction, replace fan if
necessary.
• Check defrost sensor position, reposition onto
chassis if not already there.
• Check I/O Fault Log.
• Check for mechanical obstruction.
• Check power to plug.
• Check polarity.
• Replace fan.
• Check for broken wires.
• Does cabinet run? If no check power supplies.
If yes, check refrigeration system. If running,
check for live frost/fully flooded evaporator. If
not, check for leak.
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