Troubleshooting Fault Display; Weather-Compensated Control Unit; Constant Temperature Control Unit - Viessmann Vitodens 200-W Installation And Service Instructions For Contractors

Troubleshooting
Fault display

Weather-compensated control unit

In the event of a fault, red fault indicator
" " flashes on the display and "Fault" is shown.
A
R
bar
Fig. 41
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 is transferred to the standard
■
menu.
Any fault message facility, if connected, will be
■
switched off.
If an acknowledged fault is not remedied, the fault
■
message will be re-displayed the following day and
the fault message facility restarted.

Constant temperature control unit

In the event of a fault, red fault indicator
The two-digit fault code and (subject to the type of
fault) " " or " " flash on the programming unit dis-
play.
A
R
bar
Fig. 42
Other current faults can be displayed with / . For an
explanation of the fault codes, see the following pages.
74
flashes. Calling up acknowledged faults
A
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 resolved ones)
are saved and can be scanned.
Faults are sorted by date.
1. Press OK and
2. "Fault history"
3. "Display?"
Deleting fault history
1. Press OK and
2. "Fault history"
3. "Delete?"
A flashes.
1
Fig. 43
Acknowledge a fault
Press OK; the standard display is shown again.
A fault message facility, if connected, will be switched
OFF.
If an acknowledged fault is not remedied, the fault
message will be re-displayed the following day and the
fault message facility restarted.
Calling up acknowledged faults
Press OK for approx. 4 s.
simultaneously for approx. 4 s.
å
simultaneously for approx. 4 s.
å
ã
5 0
Example: Fault code "50"