Viessmann Vitodens 050-W Installation And Service Instructions Manual page 53

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.
A
1. Pull out the leads of temperature lim-
iter A.
2. Check the continuity of the tempera-
ture limiter with a multimeter.
3. Remove the faulty temperature lim-
iter.
4. Install a new temperature limiter.
5. Reset by pressing "Reset" on the
control unit to (see page 49).
Troubleshooting
53