Installation Manual
PPT8/12/16/22LX/LY SLIMLINE
8.0 Heat Pump
Malfunction
8.1 User Check List
SYMBOL
DESCRIPTION
WATER HEATING
AUX
POOL PUMP
OFF
If an error occurs any of the following lamps or messages will be displayed.
SYMBOL
DESCRIPTION
ALARM - FAULT
noF
WATER FLOW LAMP
THERMAL OVERLOAD
to
PRESSURE SWITCH
PrA
SYMBOL
DESCRIPTION
E1-E1/
PROBE ERROR
E2-E2
EPr
PROBE ERROR
Calorex Heat Pumps Ltd. · The Causeway, Maldon, Essex CM9 4XD, UK
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
The thermostat displays the following lamps during normal operation
LAMP ON
HEAT PUMP IN
DEFROST
DEFROST
DEMAND FOR
WATER HEATING
FAN
FAN RUNNING
POOL PUMP
RUNNING
OFF LAMP
HEAT PUMP OFF
LAMP ON
ILLUMINATES
WITH "to"
WATER FLOW
OFF OR
INADEQUATE
INTERNAL
(PPT16/22)
OVERLOAD TRIP
HP/LP FAULT
ALARM
LAMP ON
PROBE INTERRUPTED, SHORT
CIRUIT OR OUTSIDE RANGE
INTERNAL EEPROM MEMORY
ERROR
LAMP FLASHING
-
WATER HEATING DEMAND
COMPRESSOR DELAY TIMER NOT
TIMED OUT
FAN NOT RUNNING
COMPRESSOR DELAY TIMER NOT TIMED
OUT
-
-
LAMP FLASHING
-
WATER FLOW OFF OR INADEQUATE
-
-
CHECK CONNECTION BETWEEN PROBES AND
THERMOSTAT
SWITCH OFF HEAT PUMP AT MAINS SUPPLY FOR FIVE
MINUTES THEN SWITCH BACK ON. IF FAULT PERSISTS
CONTACT INSTALLER
Page 23
LAMP OFF
-
NO DEMAND FOR WATER HEATING/
DEMAND SATISFIED
FAN NOT RUNNING
POOL PUMP NOT RUNNING
-
ACTION
-
CHECK WATER PUMP RUNNING AND
ANY EXTERNAL BYPASS VALVES ARE
CLOSED
CONTACT COMPETENT ELECTRICIAN
TO RESET THERMAL OVERLOAD.
IF PROBLEM PERSISTS CHECK SITE
VOLTAGE
CONSULT INSTALLER
ACTION
SD638150 ISSUE 11
®