Fisher & Paykel 635 Active Smart Service Manual page 128

321144
Problem
FC TOO WARM
Total Compartment
Warm.
TOTAL CABINET TOO
WARM
FC COOLING PC
WARMING
ALARM ON
FAULT DISPLAYED, NO
ALARM
Possible Causes
* PC fan not going.
* No refrigeration.
* No refrigeration.
* Iced up evaporator.
* Defrost heater.
* Sensors.
* Door switch fault.
* Display flashing fault
code, but no alarm
sounding.
- Check for fault code (refer to Sections 10.1.1
or 10.2.1).
- Check for mechanical obstruction.
- Check for broken wires.
- Check polarity.
- Replace fan.
- Does compressor 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.
- Does compressor 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.
- If compressor is not running, check
power/control module voltage outputs.
- Check compressor and ancillaries.
- Check defrost circuit continuity.
- Doors sealing? Adjust.
- PC fan running? If not, refer 'PC Too Warm'.
- Check display for any fault code.
- Check defrost element continuity.
- Put cabinet into manual defrost (refer to
Sections 10.1.8 or 10.2.6), wait for defrost
relay to "click" on (refer to Section 4.3).
- If no "click", check power/control module.
- If "click" heard, check the defrost heater 230v
output at the power/control module.
- Check display for fault codes 0-5.
- Sensors above or below limit? Refer
thermistor resistance table (Section 4.22).
- Check that no fault code is shown on the
display.
- Check that PC/FC doors activate reed
switches by using Input/Output test (refer to
Sections 10.1.6 or 10.2.4).
- Check also reed switches with magnet.
- Check wiring harness to power/control
module.
- Alarm has been switched off by user?
- Piezo alarm faulty on board of power/control
module? Replace module.
128
What To Do