Fault Display; Troubleshooting - Viessmann Vitotronic 100 Installation And Service Instructions Manual

Fault display

In the event of a fault, the red fault indicator on the
control unit flashes. The 2-digit fault code and
on the display.
Use / to display other current faults.
For an explanation of the fault code, see chapter "Fault
codes".
Acknowledging a fault display
Press OK. The default display appears on the screen.
Calling up acknowledged fault displays
Hold down OK for approx. 4 s.
Calling up fault codes from the fault memory (fault history)
The 10 most recent faults (including those remedied)
are saved and can be called up.
Faults are sorted by date.
1. Press OK and simultaneously for approx. 4 s.
Deleting the fault history
While the list is displayed, press OK until
Confirm with OK.
Fault codes
Displayed fault System characteristics
code
0F Control mode
18 Control mode
Example:
flash Fault code "d1" burner fault
1
Fig. 28
Note
Any fault message facility connected will be switched
off.
If an acknowledged fault is not remedied, the fault
message will be redisplayed the following day and the
fault message facility restarted.
2. Use to select
OK.
3. Use / to select fault messages.
flashes.
Cause
Service
"0F" is only displayed in
the fault history.
A sensor was inserted in-
correctly in socket
!

Troubleshooting

d 1
and activate fault history with
ã
Measures
Perform a service.
Note
After servicing, set code "24:0".
Select code "25:0" in group 1
. "General".
ã
47