Viessmann Vitocrossal 300 Service Instructions Manual page 29

Burner control unit
Status Service
Fig. 36
Status Service
Fig. 37
Status Service
Fig. 38
Status Service
Fig. 39
Status Service
Fig. 40
Status Service
Fig. 41
Status Service
Fig. 42
Manual mode and service display
To call up the service display and for manual mode,
the control unit must be issuing a heat demand. The
service display shows the current modulation level in
%.
Status Service
Fig. 43
(cont.)
Quality of the ionisation current
Note
A value 50 for the quality of the ionisation current is
>
very good. If the value is lower, measure the ionisation
current. If the ionisation current is
ionisation cable and ionisation electrode.
Start counter with reset, 1 digit
Start counter with reset, 100 digit
Start counter with reset, 1000 digit
Hours run meter with reset, 1 digit
Hours run meter with reset, 100 digit
Hours run meter with reset, 1000 digit
Display:
"d 0" Lower heating output
"d 00" Upper heating output
1. Press and simultaneously to switch the
b S
burner to manual mode. The display shows "d" =
controlled stop under status.
2. Set the lower heating output: Press
display shows "d 0".
3 A, check the
≤ μ
until the
b
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