Viessmann VITOLADENS 300-W Installation And Service Instructions Manual page 107

Repair
(cont.)
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 flue gas temperature
sensor A.
2. Check the sensor resistance and
compare it with the curve.
3. Replace the sensor in the case of
severe deviation.
Troubleshooting
107