Viessmann Vitodens 200-W Installation And Service Instructions Manual page 140

Troubleshooting
Repair
(cont.)
1. Check whether the flue gas temper-
ature sensor is correctly inserted.
See previous diagram.
2. If necessary, correct the position of
the flue gas temperature sensor or
replace faulty flue gas temperature
sensor.
Checking the fuse
A
1. Switch off the power.
2. Release the side closures and pivot
the control unit down.
140
3. Press reset button R and repeat com-
missioning.
The check is repeated until it is com-
pleted successfully.
F1
3. Remove cover A.
4. Check fuse F1 (see connection and
wiring diagram).