Viessmann Vitodens 333-F Service Instructions Manual page 99

Repairs
(cont.)
Coding in the delivered condition
85:0 Standard mode
Possible change
85:1 Manual calibration of the
combustion control unit.
The red fault indicator
also flashes during cali-
bration. The process has
terminated when the red
indicator no longer
flashes (after approx.
1 min). The air factor can
then be manually altered
in coding address "7d".
Note
Heat must be drawn off
during manual calibra-
tion.
Troubleshooting
99