Checking And Acknowledging Faults - Viessmann VITODENS 200-W Service Instructions Manual

Fault display
(cont.)

Checking and acknowledging faults

Note
If an acknowledged fault is not removed,
the fault message will be re-displayed:
■ With a constant temperature control
unit after 24 h
■ With a weather-compensated control
unit at 7:00 h the next day
Constant temperature control unit
Press the following keys:
1. a/b for further fault codes.
2. d All fault messages are
acknowledged simultane-
ously, the fault display will be
deleted and the red fault indi-
cator continues to flash.
Calling up acknowledged fault messages
Press the following keys:
1. d for approx. 3 s
Calling up fault codes from the fault memory (fault history)
The 10 most recent faults are saved and
may be scanned.
The faults are ordered by date, thus the
most recent fault is fault number 1.
Fault history
1 18
Weather-compensated control unit
Press the following keys:
1. c for the current fault.
2. a/b for further fault messages.
3. d All fault messages are
acknowledged simultane-
ously, the fault display will be
deleted and the red fault indi-
cator continues to flash.
2. a/b for the acknowledged fault.
Press the following keys:
1. G + d simultaneously for
approx. 2 s.
2. a/b for individual fault codes.
3. Note
All saved fault codes can be deleted
e .
with
Troubleshooting
65