Checking The Cylinder Temperature Sensor; Checking The Boiler Water Temperature Sensor - Viessmann VITOCROSSAL Service Instructions Manual

Maintenance

Checking the cylinder temperature sensor

5
Fig. 35
20
10
8
6
4
2
1
0.8
0.6
0.4
10 30 50
Temperature in °C
Fig. 36 Sensor type: NTC 10 k

Checking the boiler water temperature sensor

Note
The boiler water temperature sensor is a dual sensor.
B
D
A
Fig. 37
Boiler water temperature sensor
A
Connection
B
½
Connection 1
C ¼
Water pressure switch
D
76
70 90 110
Ω
C
1. Cylinder temperature sensor
Pull out plug % . Measure the resistance.
2. Check sensor resistance and compare it to the
curve.
3. In the event of severe deviation replace the sensor.
1. Boiler water temperature sensor
Pull plug and measure the resistance.
A