COMFORT CIRCLE
4
6 Maintenance 43
6.1 Cleaning the unit 43
6.2 Cleaning the filter 43
6.3 Scheduled maintenance 45
6.4 Cleaning the condensate pump filter 45
7 Faults 46
7.1 Safety instructions 46
7.2 Resolving simple problems 46
7.3 Fault-finding by the installer 46
7.4 Fault messages in the controller 49
8Service 52
8.1 Safety instructions 52
8.2 Service menu 52
8.3 Resetting and reconfiguring the controller 52
8.4 Accessing the interior of the unit 53
8.5 Removing the main cover 55
8.6 Electronics module 55
8.7 Fuse 56
8.8 Venting the heat exchanger 57
8.9 Draining the heat exchanger 57
8.10 Setting the unit code 57
8.11 Composition of Biddle control cable 58
EC declaration of agreement 60
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