Code Description Causes and corrective actions
Error on the main controller Main controller damaged: replace the main controller.
Frost protection running
Domestic hot water tank installed in a room exposed
to frost: install the domestic hot water tank in a frost-
free room.
4-way valve blocked in cold mode: unblock or re
place the 4-way valve.
11.4
Clearing the error codes
If the probable cause of an error code is resolved, but the error code is still
displayed:
1. Clear the error code or codes by pressing keys and together for
3 seconds.
2. Repeat the operation until the code or codes disappear.
11.5
Running diagnostics on errors on the outdoor unit
To run diagnostics on certain errors shown by the control panel, it may be
necessary to refer to the parameters directly on the outdoor unit.
Important
Only qualified persons may carry out diagnostics of the outdoor
unit as the process is carried out directly on the outdoor unit.
1. Switch the thermodynamic water heater off.
2. Remove the top panel on the outdoor unit.
3. Switch the thermodynamic water heater back on.
Danger
Electrified bare parts are then accessible.
4. Scroll through the parameters by pressing the QUERY button.
See
Outdoor unit list of parameters.
5. Once diagnostics are complete, refit the top panel on the outdoor unit.
For more information, see
Outdoor unit list of parameters, page 55
11.6
Outdoor unit list of parameters
Tab.26 Outdoor unit parameters
Parameter No. Description of the parameter Values displayed
0 Normal display Water temperature T5L
dF : Defrosting phase
dC : Refrigerant fluid recovery mode
0: Holiday mode
1 Mode 2: In residence
8: Holiday
2 Fan speed F0: Shut-down
F1: Low speed
F2: High speed
3 Evaporation temperature (T3)
4 Air temperature (T4)
5 Water temperature (T5L)
Fig.57
11 Troubleshooting
7740327 - v03 - 03122019 55
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