Scanning Fault Display - Viessmann VITOTRONIC 200-H Operating Instructions Manual

What to do if ...
... rooms are too hot?
Cause
Control unit incorrectly adjusted
Control unit fault or outside temperature sensor faulty:
Fault symbol U flashes in display
Mixer motor faulty
... fault symbol U flashes in the display?
Cause
Control unit fault

Scanning fault display

If your heating system has developed a fault, it will be displayed and indicated by flashing fault symbol U.
You can read off the fault code on the display by scanning, then notify your local heating contractor accordingly. This
allows the heating contractor to prepare better for the service call and may save additional travelling costs.
Press the following keys:
1. / for troubleshooting.
Example
1 2 3 4 5 6 7
In this case, notify your local heating contractor of
the numbers 1, 1 and 8.
2. for acknowledgement.
16
Remedy
Check settings and correct if required:
Room temperature (see page 9)
Time (see page 11)
Heating characteristics (see page 11)
Scan the type of fault (see below) and notify your local
heating contractor
Unlock motor lever A and operate mixer lever B manually.
Notify your local heating contractor.
A
B
Remedy
Scan for faults (see below) and notify your local heating
contractor.
Please note:
If the fault has not been rectified, the fault message will
again be displayed at 07:00 h on the following day.