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CR 10 H – 6720876740 (2017/08)
Troubleshooting
Fault
code
Sub-
code
Possible cause and
remedy from the specialist
A11
A71
...
A74
1094 No communication with ventilation unit.
Check cabling.
A11 3091 ...
3094
Remote control not registered correctly in the system.
Check and, if necessary, correct the configuration in the
higher-level user interface.
Room temperature sensor for remote control is faulty
(A11/3091: heating/cooling circuit 1, ..., 3094: heating/
cooling circuit 4).
Replace CR 10 H.
A61
...
A68
3091 ...
3098
Room temperature sensor for CR 10 H is faulty
(A61/3091: heating circuit 1, ..., A68/3098: heating
circuit 8).
Replace CR 10 H.
A21 1001 CR 10 H in heating circuit 1 incorrectly configured.
If a higher-level user interface (e.g. CW 400) is installed,
set A.1 = Fb (remote control).
If no higher-level user interface and only one heating circuit
is installed, set A.1 = CO (controller).
A21
...
A24
3141 ...
3144
Sensor for relative humidity in the remote control is faulty
(A21/3141: heating/cooling circuit 1, ..., A24/3144: heating/
cooling circuit 4).
Replace the faulty CR 10 H.
A22
...
A28
1001 BUS signal from the higher-level user interface for remote
control is missing (A22: heating circuit 2, ..., A28: heating
circuit 8).
Install the higher-level user interface (e.g. CW 400).
Establish the BUS connection.
29


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