819091D
71
PROBLEM Possible
Causes
What To Do
Total Cabinet Too
Warm
No refrigeration
Is the compressor running? 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.
Check reed switches are working OK
FC Cooling
PC Warming
Iced up evaporator
Check defrost circuit continuity
Doors sealing, adjust
PC fan is running, if not refer PC too warm
Iced up return duct
De-ice duct area
Check PC duct insulation for good seal in return
duct
Check doors are sealing
Alarm On
Defrost heater
Check display for any fault code
Check defrost element continuity
Put cabinet into manual defrost, wait for defrost
relay to “click” on (2 ½ minutes after pressing
buttons)
If no “click”, check power / control module
If “click” heard, check the defrost heater 230v
output at the power / control module
Sensors
Check display for fault codes 0-5
Sensors above or below limit, refer thermistor
service table in service manual
Door switch fault
Check that no fault code is shown on the display
Check that PC/FC doors activate reed switches
Check also reed switches with magnet
Check wiring harness to power/control module
Fault Displayed - No
Alarm
Display showing fault
code, but no alarm
sounding
Alarm has been switched off by user
Piezo alarm faulty, replace power/control
module
FC Light Not
Functioning
Blown bulb
Check power supply to socket 7Volts, if nil
check plug at display module
Check continuity of bulb, if nil replace
Check reed switch operations
Cabinet type
Power / console module not initialised, close FC
door and press compartment select button
Poor connection
Spread halogen bulb legs
Lamp holder, replace where possible
Connector on display module