Error
code
Message
Description
H00.57
T DHW Top Open
Domestic Hot Water top temperature sensor is either removed or measures a
temperature below range
Check the wiring between the central unit PCB and the sensor.
Check that the sensor has been fitted properly.
Check the Ohmic value of the sensor.
Replace the sensor if necessary.
H00.58
T DHW Top Closed
Domestic Hot Water top temperature sensor is either shorted or measures a
temperature above range
Check the wiring between the central unit PCB and the sensor.
Check that the sensor has been fitted properly.
Check the Ohmic value of the sensor.
Replace the sensor if necessary.
H02.02
Wait Config Number
Waiting For Configuration Number
Waiting for configuration parameters to be entered
Configure CN1 / CN2 depending on the output of the outdoor unit installed (CNF
menu).
Central unit PCB replaced: heat pump not configured
H02.03
Conf Error
Configuration Error
The configuration parameters entered are incorrect.
Configure CN1 / CN2 depending on the output of the outdoor unit installed (CNF
menu).
H02.04
Parameter Error
Parameter Error
Restore the factory settings.
If the error is still present: change the central unit PCB.
PCB settings cannot be read
Configure CN1 / CN2 depending on the output of the outdoor unit installed (CNF
menu).
Check the correct parameter settings.
H02.05
CSU CU mismatch
CSU does not match CU type
Software change (software number or version parameter inconsistent with the mem
ory).
H02.07
Water Press Error
Water Pressure Error active
Check the hydraulic pressure in the heating circuit.
Check the wiring between the central unit PCB and the pressure sensor.
Check the connection of the pressure sensor.
H02.09
Partial block
Partial blocking of the device recognized
BL input on the central unit PCB terminal block open
Check the contact on the BL input.
Check the wiring.
Check the AP001 and AP100. parameters.
H02.10
Full Block
Full blocking of the device recognized
BL input on the central unit PCB terminal block open
Check the contact on the BL. input.
Check the wiring.
Check the AP001 and AP100. parameters.
11 Troubleshooting
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7762758 - v05 - 19082020