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Calorex AW629 Manual

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Page 19
HEAT PUMP MALFUNCTION
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
USER CHECK LIST
ACTION
MAINS RED OFF
FAULT AMBER OFF Check mains supply- external fuses - isolator etc.
DEFROST WHITE OFF
WATER FLOW GREEN OFF
MAINS RED ON
FAULT AMBER OFF Water flow inadequate
DEFROST WHITE OFF
WATER FLOW GREEN OFF
MAINS RED ON
First check water flow, then
FAULT AMBER OFF Check unit control fuse on single phase machine.
Check MCB on three
p
hase machine.
DEFROST WHITE OFF
WATER FLOW GREEN OFF
MAINS RED ON Check water and air flows are not restricted.
FAULT AMBER ON Check thermal cut out on Soft Start if fitted and that
air flow is not restricted. Check unit control fuse on
DEFROST WHITE OFF single phase machine. Check MCB on three phase
machine.
WATER FLOW GREEN OFF
MAINS RED ON Unit on defrost (heating mode) check that air
temperature is not below 7°C.
FAULT AMBER OFF Check evaporator is clean.
DEFROST WHITE ON
WATER FLOW GREEN ON
MAINS RED ON Check water and air flows are not restricted, and
that electrical supply is adequate.
FAULT AMBER ON/OFF Check gas charge and airflow to machine.
DEFROST WHITE OFF
WATER FLOW GREEN OFF
UNIT DOES NOT OPERATE
FAN ON COMPRESSOR OFF
UNIT OPERATES INTERMITTENTLY
LAMP
… 19 …


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