Viessmann Vitodens 222-F Installation And Service Instructions For Contractors page 88

Troubleshooting
(cont.)
In the event of a fault, red fault indicator
the control unit. appears on the display and "Fault"
is shown.
A
R
bar
Fig. 53
Acknowledging the fault display
Tap "Confirm".
flashes in the footer.
Calling up acknowledged fault messages
Tap the following buttons:
1.
Note
If service messages are present at the same time
in the heating system, "Faults" and "Service,
messages" appear.
Calling up fault messages from the fault memory (fault history)
The 10 most recent faults (including those remedied)
and service messages are saved and can be called
up.
Faults are sorted by date.
Tap the following buttons:
1. "Menu"
2. "Service"
3. Enter "viservice" password.
4. "Fault history"
88
Note
A flashes on
If a central fault message facility is connected, this is
switched on.
For an explanation of fault codes, see chapter "Fault
messages".
Note
Any connected central fault message facility is
switched off.
If an acknowledged fault is not remedied, the fault
message will be redisplayed the following day at
07:00 h, and the fault message facility restarts.
2. "Faults"
The fault messages appear in red and in chrono-
logical order in a list.
Service messages appear in yellow.
5. Use
fault.
6. If you wish to delete the list, tap "Delete".
Note
The fault lists are shown separately in conjunction
with a ventilation system (Vitovent). The ventilation
system fault codes can be called up as menu
points within the standard fault history. This list can
only be cleared via "Delete" within this history.
to call up further information on the relevant