Troubleshooting; Fault Display - Viessmann VITODENS 222-F Installation And Service Instructions Manual

Troubleshooting

Fault display

Weather-compensated control unit
In case of a fault, " " flashes on the dis-
play and "Fault" is shown.
The fault code is displayed with OK. For
an explanation of the fault code, see the
following pages.
For some faults, the type of fault is also
displayed in plain text.
Acknowledging a fault
Follow the instructions on the display.
Note
The fault message goes into the stand-
ard display of the short menu.
A fault messaging facility, if connected,
will be switched off.
If an acknowledged fault is not remedied,
the fault message will be re-displayed
the following day.
Constant temperature control unit
In case of a fault, the two-digit fault code
and (subject to the type of fault) " " or
" " flash on the programming unit dis-
play.
Other current faults can be displayed
with / . For an explanation of the fault
codes, see the following pages.
1 5 0
Example: Fault code "50"
90
Calling up acknowledged faults
Select "Fault" in the standard menu.
The current faults will be displayed in a
list.
Calling up fault codes from the fault
memory (fault history)
The 10 most recent faults (including
those remedied) are saved and can be
scanned.
Faults are sorted by date.
1. Press OK and
approx. 4 s.
2. "Fault history"
3. "Display?"
Acknowledge fault
Press OK; the standard display is shown
again.
A fault messaging facility, if connected,
will be switched off.
Note
" " or " " continues to be shown on the
ã
display.
A fault messaging facility (if installed) is
switched off.
If an acknowledged fault is not remedied,
the fault message will be re-displayed
the following day.
simultaneously for