Viessmann VITODENS 050-W Installation And Service Instructions Manual page 60

Troubleshooting
Repairs
(cont.)
Checking the outlet temperature sensor
A
20
10
8
6
4
2
1
0.8
0.6
0.4
10 30 50 70 90 110
Temperature in °C
Sensor type: NTC 10 kΩ
60
1. Disconnect leads from outlet tem-
perature sensor A.
2. Check sensor resistance and com-
pare it to the curve.
3. In the event of severe deviation
replace the sensor.
Note
Water may escape when replacing
the outlet temperature sensor. Shut
off the cold water supply. Drain the
DHW line and the plate heat
exchanger (on the DHW side).