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Calorex Heat Pumps Ltd. · The Causeway, Maldon, Essex CM9 4XD, UK
Installation Manual
PPT8/12/16/22LX/LY SLIMLINE
SD638150 ISSUE 11
®
8.0 Heat Pump
Malfunction
WARNING: Isolate heat pump electrically before entering heat pump 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 the installer.
If in doubt or if advice is required contact Calorex Service Department.
Telephone +44(0)1621 857171 or 856611
8.1 User Check List
SYMBOL DESCRIPTION LAMP ON LAMP FLASHING LAMP OFF
DEFROST
HEAT PUMP IN
DEFROST
- -
WATER HEATING
DEMAND FOR
WATER HEATING
WATER HEATING DEMAND
COMPRESSOR DELAY TIMER NOT
TIMED OUT
NO DEMAND FOR WATER HEATING/
DEMAND SATISFIED
FAN
FAN RUNNING
FAN NOT RUNNING
COMPRESSOR DELAY TIMER NOT TIMED
OUT
FAN NOT RUNNING
AUX POOL PUMP
POOL PUMP
RUNNING
- POOL PUMP NOT RUNNING
OFF OFF LAMP HEAT PUMP OFF - -
SYMBOL DESCRIPTION LAMP ON LAMP FLASHING ACTION
ALARM - FAULT
ILLUMINATES
WITH "to"
- -
noF WATER FLOW LAMP
WATER FLOW
OFF OR
INADEQUATE
WATER FLOW OFF OR INADEQUATE
CHECK WATER PUMP RUNNING AND
ANY EXTERNAL BYPASS VALVES ARE
CLOSED
to
THERMAL OVERLOAD
(PPT16/22)
INTERNAL
OVERLOAD TRIP
-
CONTACT COMPETENT ELECTRICIAN
TO RESET THERMAL OVERLOAD.
IF PROBLEM PERSISTS CHECK SITE
VOLTAGE
PrA
PRESSURE SWITCH
ALARM
HP/LP FAULT - CONSULT INSTALLER
SYMBOL DESCRIPTION
LAMP ON ACTION
E1-E1/
E2-E2
PROBE ERROR
PROBE INTERRUPTED, SHORT
CIRUIT OR OUTSIDE RANGE
CHECK CONNECTION BETWEEN PROBES AND
THERMOSTAT
EPr PROBE ERROR
INTERNAL EEPROM MEMORY
ERROR
SWITCH OFF HEAT PUMP AT MAINS SUPPLY FOR FIVE
MINUTES THEN SWITCH BACK ON. IF FAULT PERSISTS
CONTACT INSTALLER
If an error occurs any of the following lamps or messages will be displayed.
The thermostat displays the following lamps during normal operation
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