Viessmann B1HF - Troubleshooting and Fault Resolution; Fault Display and Message Access Procedures

65
A fault in the burner control unit causes the display to
show " ".
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.
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. " "
2. / to select "Er".
3. OK
4. / to call up fault entry "E.1 to E.5".
5. OK
6. / display fault code.
Calling up 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 "Fault messages".
5. OK
6. / for the required message
7. OK
Troubleshooting
Fault display on the programming unit
6167586
Diagnosis