Fault Display On The Programming Unit; Calling Up Fault Messages; Acknowledging The Fault Display; Calling Up Acknowledged Fault Messages - Viessmann VITODENS 222-F Installation And Service Instructions Manual

Troubleshooting

Fault display on the programming unit

If there is a fault, the display shows "Burner fault" or
"Active messages".
Note
If a central fault message facility is connected, this is
switched on.

Calling up fault messages

Tap the following buttons:
1. " "
2. / for:
"Details" if burner faults are present
■
"Active messages" if further faults are present
■
3. OK
4. / for "Error" to display all fault messages.

Acknowledging the fault display

1. " "
2. / for "Active messages"
3. OK
4. / for "Error" to display all fault messages.
5. OK
6. / for "Acknowledge" to acknowledge all
fault messages.
Note
Service messages are also acknowledged.

Calling up acknowledged fault messages

Tap the following buttons:
1. " "
2. / for "Active messages".
3. OK
4. / for "Error"
70
If "Connection error" appears on the display:
Check connecting cable and plug between HMU heat
management unit and HMI programming unit.
5. OK
6. / for the required message
For an explanation of the fault codes, see the fol-
lowing table.
7. OK
8. " " for "Error"
9. / to call up further 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.
5. OK
Note
When troubleshooting, always observe the
subscriber number of the component.
Check the component displayed, rectify the fault if
required. The subscriber number of the component
depends on the rotary switch position of the corre-
sponding extension module. The rotary switch
position was set during installation.
To identify the affected module, check the rotary
switch position on the module if necessary.
The following is displayed:
■ Date and time of the occurrence of the fault
■ Fault number