Troubleshooting Fault Display On The Programming Unit; Resetting The Burner - Viessmann Vitodens 050-W Installation And Service Instructions Manual

Troubleshooting
Fault display on the programming unit
The display shows " " in the event of a fault.
Note
If a central fault message facility is connected, this is
switched on.
Calling up fault messages
Tap the following buttons:
1. and OK simultaneously for approx. 4 s, then
release.
2. / for "Er" message list
3. OK
4. / to select fault entry "E.1, E.2...".
5. OK
6. Fault code is displayed.
Note
If the fault code has 3 digits, the first two digits are
shown first and then the last digit.
Acknowledging the fault display
Calling up the fault in the "Er" menu automatically
acknowledges the fault display.
Calling up acknowledged fault messages
Tap the following buttons:
1. " "

Resetting the burner

The display shows and
The burner is locked due to a fault.
Reset the burner:
Note
The burner fault display can be closed by pressing
for 4 s. The fault can be opened later by tapping
simultaneously.
A reset is only possible after the burner has cooled
down.
56
flashes.
2. / to select "Er".
3. OK
4. / to call up fault entry "E.1 to E.5".
5. OK
6. / to display the fault code.
Reading out fault messages from the fault memory
(message history)
The 5 most recent faults (including those remedied)
are saved and can be called up.
Faults are sorted by date.
Tap the following buttons:
1. and OK simultaneously for approx. 4 s, then
release.
2. / for "b.4" Message history
3. OK
4. Use / to select fault entry "E.1, E.2... or E.
5".
For messages, see chapter "Further messages".
5. OK
6. / for the required message
7. OK
Tap the following buttons:
1. / to display the fault number.
2. and simultaneously for approx. 4 s.
A rotating bar appears on the display. The reset
process has started.
If the fault no longer exists, the home screen will
appear.