Viessmann Vitodens 100 Series Installation And Service Instructions Manual page 76

Troubleshooting
Repairs
(cont.)
Checking the temperature limiter
If the burner control unit cannot be
reset after a fault shutdown although
the boiler water temperature is below
approx. 95 °C, check the temperature
limiter.
76
1. Disconnect the leads from tempera-
2. Check the continuity of the temper-
A
3. Remove faulty temperature limiter.
4. Install a new temperature limiter.
5. Press MODE and OK simultane-
ture limiter A.
ature limiter with a multimeter.
ously and hold until Ð flashes
(reset).