Viessmann Vitoligno 300-C Installation And Service Instructions Manual page 104

Troubleshooting
Fault indicator
Faults are signalled on the display by the "Fault" mes-
sage and by the red fault indicator flashing.
Checking and acknowledging faults
Note
If an acknowledged fault is not remedied, the fault
message will be redisplayed the following day at
07:00 h:
Press the following buttons:
1. for troubleshooting
d
2. / to display further fault messages if there are
| ~
several faults.
Calling up acknowledged fault messages
Press the following buttons:
1. "Menu" appears.
å
2. / for "Fault".
| ~
Calling up fault codes from the fault memory (fault history)
The 10 most recent faults are saved and can be called
up.
Faults are sorted by date.
Press the following buttons:
1. + simultaneously for approx. 4 s.
d
å
The "Service" menu appears.
2. / for "Fault history".
| ~
3. d to confirm.
Deleting saved fault codes from the fault memory
Press the following buttons:
1. + simultaneously for approx. 4 s.
d
å
The "Service" menu appears.
2. / for "Fault history".
| ~
3. to confirm.
d
104
A central fault message facility connected to plug
switched on.
3. to "Acknowledge" all fault messages.
d
4. / for "Yes", "No" or "All".
| ~
5. d to confirm.
6. until the default display is shown.
ä
To restart the boiler, press "START/STOP" after the
fault has been cleared.
3. to confirm.
d
4. / for the list of current faults.
| ~
5. until the default display is shown.
ä
4. / for "Display".
| ~
5. to confirm.
d
6. / to select the fault.
| ~
7. to display the selected fault and trigger
d
time.
8. until the default display is shown.
ä
4. / for "Delete".
| ~
5. to confirm.
d
6. / for "Yes".
| ~
7. to confirm.
d
8. until the default display is shown.
ä
gÖ is