Viessmann VITODENS 111-W Installation And Service Instructions Manual page 63

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
1. Pull leads from outlet temperature
sensor A.
2. Check the sensor resistance and
compare it with the curve.
3. In the event of severe deviation
replace the sensor.
Danger
The outlet temperature sen-
sor is immersed in the DHW
(risk of scalding).
Drain the DHW side of the
boiler before replacing the
sensor.
Troubleshooting
63