Tab.26
Code
Display text
Description
A00.32
TOutside Open
Outside temperature sensor is either removed or measures a
temperature below range
A00.33
TOutside Closed
Outside temperature sensor is either shorted or measures a
temperature above range
A00.34
TOutside Missing
Outside temperature sensor was expected but not detected
A02.18
OBD Error
Object Dictionary Error:
A02.37
Uncritic device lost
Uncritical device has been disconnected:
A10.45
RoomTempZoneA miss
Measure of Room Temperature Zone A is missing
A10.46
RoomTempZoneB miss
Measure of Room Temperature Zone B is missing
A10.47
RoomTempZoneC miss
Measure of Room Temperature Zone C is missing
A10.50
T_DHW top D miss
Domestic Hot Water temperature sensor top zone DHW is
missing
A10.54
Temp. Zone DHW miss.
Temperature sensor Zone DHW is missing
A10.56
T_DHW Zone AUX miss
Domestic Hot Water temperature sensor Zone AUX is missing
6.2
Fault finding
Tab.27
Problems
Probable causes
Corrections
The radiators are cold. The heating set point tem
perature is too low.
Increase the value of the room temperature set point or, if a room ther
mostat is connected, increase the temperature on it.
The heating mode is deac
tivated.
Activate the heating mode.
The radiator valves are
closed.
Open the valves on all radiators connected to the heating system.
The heat pump is not op
erating.
Check that the heat pump is switched on.
Check the fuses and switches on the electrical installation.
The water pressure is too
low (< 1 bar).
Top up the system with water.
There is no domestic
hot water.
The domestic hot water
set point temperature is
too low.
Increase the domestic hot water set point temperature.
The domestic hot water
mode is deactivated.
Activate the domestic hot water mode.
The appliance is in re
duced domestic hot water
mode
Check and modify the comfort and reduced time ranges for the domes
tic hot water.
Adapt the domestic hot water set point temperature.
The shower head is re
stricting the water flow.
Clean the shower head; replace it if necessary.
The heat pump is not op
erating.
Check that the heat pump is switched on.
Check the fuses and switches on the electrical installation.
The water pressure is too
low (< 1 bar).
Top up the installation with water.
Significant variations in
domestic hot water
temperature
Insufficient water supply
Check the water pressure in the installation.
Open the valve.
The domestic hot water
hysteresis is too high
Contact the professional responsible for maintenance of the heat pump.
6 Troubleshooting
32
MIT-S
7684505 - v03 - 14052020
Содержание HPI S
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