9 Troubleshooting
9.1 Error messages
Resetting the control panel allows the appliance to be restarted.
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.
In economy mode, the appliance will not run a domestic hot water
heating cycle after a central heating cycle.
2. Display the current operating status by briefly pressing the key.
9.1.1 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.
Tab.30 List of temporary error codes
Error
code
Message Description
H00.17 DHW sensor Closed Domestic Hot Water tank temperature sensor is either shorted or measures a
temperature above range
H00.32 TOutside Open Outside temperature sensor is either removed or measures a temperature below range
H00.33 TOutside Closed Outside temperature sensor is either shorted or measures a temperature above range
H00.47 HP flow sensor removed
or below range
Heat pump flow temperature sensor is either removed or measures a temperature
below range
H00.48 THp Flow Closed Heat pump flow temperature sensor is either shorted or measures a temperature
above range
H00.51 THp Return Open Heat pump return temperature sensor is either removed or measures a temperature
below range
H00.52 THp Return Closed Heat pump return temperature sensor is either shorted or measures a temperature
above range
H00.57 T DHW Top Open Domestic Hot Water top temperature sensor is either removed or measures a
temperature below range
H00.58 T DHW Top Closed Domestic Hot Water top temperature sensor is either shorted or measures a
temperature above range
H02.00 Reset In Progress Reset In Progress
H02.02 Wait Config Number Waiting For Configuration Number
H02.03 Conf Error Configuration Error
H02.04 Parameter Error Parameter Error
H02.05 CSU CU mismatch CSU does not match CU type
H02.07 Water Press Error Water Pressure Error active
Check the hydraulic pressure in the heating circuit.
H02.09 Partial block Partial blocking of the device recognized
BL input on the central unit PCB terminal block open
H02.10 Full Block Full blocking of the device recognized
BL input on the central unit PCB terminal block open
Fig.47
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