T" Models - Fisher & Paykel 790 Active Smart Service Manual

9.2

"T" Models

PC TOO COLD
PC TOO WARM
FC TOO COLD
FC TOO WARM
TOTAL CABINET TOO WARM
FC COOLING - PC WARMING
* FC fan not going (alarm will
sound and fault code will be
displayed)
* Short of gas
* PC sensor inaccurate
* Evaporator iced up
* No refrigeration
* Fans not working (alarm will
sound and fault code will be
displayed)
* Power/control module
failure
* PC delivery duct blocked
* FC sensor location
* Faulty sensor
* PC faulty fanr
* No refrigeration
* No refrigeration
* Iced up evaporator
- Check power to plug
- Check polarity
- Replace fan
- Check run percentage, if high check evaporator
- Check fully flooded evaporator, check for leak
- Check calibration of sensor ice point using interface binary
or refer to thermistor resistance table in service manual
- 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
- Is there a 12Volt supply, PC light working
- If yes, check fan connection(s) at fan end, also at
power/control module end of the harness
- If no, check for power/control module failure
- Are lamp / interface L.E.D.'s working
- If not check display module connection
- If OK is compressor running ?
- If not replace power/control module
- De-ice area behind chassis
-
- 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 PC cooling, fan running
- 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
- 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
- Compressor is not running, check power/control module
voltage outputs
- Check compressor and ancillaries
- Check defrost circuit continuity
- Doors sealing, adjust
- Is PC fan is running? (alarm will sound and fault code will
be displayed if faulty). If not, refer PC too warm
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