Deleting Messages; Overview Of Electronics Modules - Viessmann VITODENS 222-F Installation And Service Instructions Manual

Troubleshooting
Fault display on the programming unit

Deleting messages

1. and OK – press simultaneously for approx. 4 s,
then release.
2. "Message history"
3. OK

Overview of electronics modules

Fig. 48
HMI programming unit
A
BCU burner control unit
B
HMU heat management unit
C
72
(cont.)
4. Use /
5. OK
6. OK to confirm the message.
A
B
C
to select "Delete messages".