Heat Pump Malfunction - Calorex Pro-Pac Series Owners & Installation Manual

PR0-PAC SYSTEM OWNER INSTALLATION MANUAL

8.0 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.
Only a competent electrician should attempt to rectify electrical supply
problems.
USER CHECK LIST 30/45/70BM
LAMP
MAINS RED
FAULT AMBER
DEFROST WHITE
WATER FLOW GREEN
MAINS RED
FAULT AMBER
DEFROST WHITE
WATER FLOW GREEN
MAINS RED
FAULT AMBER
DEFROST WHITE
WATERFLOW GREEN
MAINS RED
FAULT AMBER
DEFROST WHITE
WATERFLOW GREEN
MAINS RED
FAULT AMBER
DEFROST WHITE
WATERFLOW GREEN
MAINS RED
FAULT AMBER
DEFROST WHITE
WATERFLOW GREEN
30
The refrigeration circuit can only be worked on by an authorised/competent
technician in accordance with EU 517/2014.
Any sign of abnormal operation such as water dripping should be reported
immediately to your installer or to Dantherm Group UK.
If in doubt or if advice required, contact Dantherm Group UK Service
Department.
Telephone +44 (0)1621 856611
UNIT DOES NOT OPERATE
OFF
OFF
Check mains supply, – external fuses – isolator etc.
OFF
OFF
Water flow inadequate.
ON
Check water pump to restore water flow through machine. Check
OFF
waterflow rate. Check internal control MCB
Check thermostat set point.
OFF
OFF
ON
OFF
12 hour timer timing out or standby switch set to 0
OFF
ON
Check air flows are not restricted.
ON
Check thermal cut out on Soft Start if fitted.
ON
OFF Check HP/LP cutout switch and reset (red button below console
thermostat). NOTE LP Switch is Auto reset on Y machines. Check Fan
and compressor overloads (Fan located in electric box)
ON
FAN ON COMPRESSOR OFF
Unit on defrost (normal) if after 20 mins the defrost lamp is still on check
ON
that air temperature is not below 10ºC for 'M' models (-15ºC for 'MY'
OFF
models).
Check evaporator is clean
ON
Check 12 hours elapsed since first power up.
ON
UNIT OPERATES INTERMITTENTLY
Check water flow is not restricted,
ON
and that electrical supply is adequate.
ON/OFF
Check that linked in external equipment is not the cause of the fault.
OFF
ON/OFF
ACTION
SD566252 ISSUE 51