11 Troubleshooting
11.1 Resetting the safety thermostat
Danger
Before carrying out any work on the indoor module, cut the power
supply to the indoor module and the electrical back-up.
If you suspect that the safety thermostat was triggered:
1. Cut off the power supply to the indoor module and the electrical back-
up immersion heaters by lowering the circuit breakers on the
distribution board.
2. Locate and correct the cause of power cut before resetting the safety
thermostat.
3. Remove the front panel of the indoor module and the protective cap.
4. If the safety thermostat has been triggered, use a flat-headed
screwdriver to press the reset button on the thermostat. If not, look for
an alternative cause for the power to the immersion heater having
been cut.
5. Replace the front panel of the indoor module and the protective cap.
6. Switch the mains supply to the indoor module and the electrical back-
up immersion heater back on.
11.2 Error messages
The message appears when a fault code is detected. After resolving
the problem, pressing the
key resets the appliance's functions and
thus eradicates the fault.
If several faults occur, they are displayed one after the other.
1. Reset the control panel by pressing the
key for 3 seconds,
when an error message is displayed.
2. Display the current operating status by briefly pressing the
key.
11.2.1 Error codes
An error code is a temporary status, resulting from the detection of a heat
pump anomaly. The control panel attempts automatic restart of the heat
pump until it switches on.
When one of the following codes is displayed and the heat pump cannot
restart automatically, contact a maintenance technician.
Fig.132
MW
-3
0
0
0
7
2
3
-2
Fig.133
MW
-5
0
0
0
0
6
1
-3
Fig.134
MW-5000060-3
11 Troubleshooting
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