Heat Pump Malfunction - Calorex 29 Series Owners & Installation Manual

WARNING: Isolate machine electrically before entering machine or removing panels.
The user check list should be carried out before initiating a service call.
Do not attempt to interfere with any internal control settings as these have been factory calibrated and sealed.
Any sign of abnormal operation, such as water dripping should be reported immediately to an installer or
Calorex. If in doubt or if advice required contact Calorex Service Department.
Telephone (01621) 857171 or 856611
MAINS
FAULT
DEFROST
WATER FLOW
MAINS
FAULT
DEFROST
WATER FLOW
MAINS
FAULT
DEFROST
WATER FLOW
MAINS
FAULT
DEFROST
WATER FLOW
MAINS
FAULT
DEFROST
WATER FLOW
MAINS
FAULT
DEFROST
WATER FLOW

HEAT PUMP MALFUNCTION

USER CHECK LIST
LAMP
UNIT DOES NOT OPERATE
RED OFF
AMBER OFF
WHITE OFF
GREEN OFF
RED ON
AMBER OFF
WHITE OFF
GREEN OFF
RED ON
AMBER OFF
WHITE OFF
GREEN OFF
RED ON
AMBER ON
WHITE OFF
GREEN OFF
FAN ON COMPRESSOR OFF
RED ON
AMBER OFF
WHITE ON
GREEN ON
UNIT OPERATES INTERMITTENTLY
RED ON
ON/OFF Check gas charge and airflow to machine.
AMBER
WHITE OFF
GREEN OFF
ACTION
Check mains supply- external fuses - isolator etc.
Water flow inadequate
First check water flow, then
Check unit control fuse on single phase m achine.
Check MCB on three phase machine.
Check water and air flows are not restricted.
Check thermal cut out on Soft Start if fitted and that
air flow is not restricted. Check unit control fuse on
single phase machine. Check MCB on three phase
machine.
Unit on defrost (heating mode) check that air
temperature is not below 7°C.
Check evaporator is clean.
Check water and air flows are not restricted, and
that electrical supply is adequate.
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