Operating instructions

&
Room temperature se nsor
&
Fault - user
Checking and acknowledging faults
Note
If an acknowledg ed fault is not remove d, the fault message wi ll be re-displa yed
after 24 h.
Constant temperature control units
Press the following keys:
1. a/b for further fault codes.
2. d all fault messa ges are
acknowledged simulta-
neously, the fault displa y
will be cancelled and the
red fault
indicator conti nues to
flash.
Weath er –compensated control units
Press the following keys:
1. c for the current fault.
2. a/b for further fault messages.
3. d all fault messa ges are
acknowledged simulta-
neously, the fault displa y
will be cancelled and the
red fault
indicator conti nues to
flash.
Calling up acknowledged fault messages
Press the follo wing keys:
1. d for approx. 3 s.
2. a/b for the acknowledged fault.
Fault display (cont.)
70
Troubleshooting
5692 619 GB