Instruction manual
EU heat pumps
20
Problem:
the heat pump doesn’t work
Observation:
the screen does not light up and the fan/compressor doesn’t make a sound
Possible cause
Solution
No electrical power supply
Check power supply (wiring, fuses, ...)
Problem:
the heat pump doesn’t work
Observation:
the screen displays “OFF” and the LED next to “ ” is not lit
Possible cause
Solution
The pump is in stand-by mode
Turn on the pump
Problem:
the heat pump doesn’t work
Observation:
the screen displays “OFF” and the LED next to “ ” is lit
Possible cause
Solution
1. The set temperature has been reached
1. No action required; all is well
2. The heat pump isn’t functioning yet
2. Wait until the start time delay period has lapsed (3
minutes)
Problem:
the heat pump works but doesn’t heat
Observation:
the compressor is running but the fan isn’t and the “HEATING/DEFROST” LED is blinking
Possible cause
Solution
The defrosting cycle is running
No action required; all is well
Problem:
the heat pump works normally but there is no or insufficient heating
Observation:
the screen displays the temperature but no error codes
Possible cause
Solution
1. Insufficient capacity of the heat pump in proportion to
the size of the swimming pool
Install a larger sized model or an extra heat pump.
Cover the pool to limit heat loss
2. The compressor works but the fan doesn’t
Check the electrical wiring of the fan. Replace the
condenser or the fan motor if necessary.
3. The fan works but the compressor doesn’t
Check the electrical wiring of the compressor. Replace
the condenser or the compressor if necessary.
4. The heat pump has not been placed on an optimal
location
Make for sufficient air circulation (see manual for
details)
5. Faulty temperature setting
Set the correct temperature
6. By-pass not adjusted
Have the by-pass readjusted by the installer
7. Massive ice formation on the evaporator
Have the settings for automatic defrost control checked
by the installer
8. Not enough refrigerant
Have the heat pump checked by a refrigeration
technician
Problem:
the heat pump works normally but the water is cooling down instead of heating up
Observation:
the screen displays the temperature but no error codes
Possible cause
Solution
The wrong mode has been selected
Verify the parameters, select the correct mode
The controller is out of order
Check the voltage in the electrical wiring to the 4-way
valve. If no electric potential is measured, replace the
controller
The 4-way valve is out of order
Check the voltage in the electrical wiring to the 4-way
valve. If electric potential is measured, replace the coil.
If the problem persists, have the heat pump checked by
a refrigeration technician