Viessmann B1HF - Page 88

88
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&%
Fig. 45
Check cylinder temperature sensor
10
1
10 30 50 70 90 110
Temperature in °C
0.4
0.6
0.8
2
4
6
8
20
Resistance in kΩ
Fig. 46 Sensor type: NTC 10 kΩ
1.
Disconnect plug TS1
%
from the electronics mod-
ule. Measure the resistance.
2. Compare the sensor resistance to the curve.
3. In the event of severe deviation (> 10 %), replace
the sensor.
Check collector temperature sensor
0.1
1
10
100
0 20 40 60 80 100 120 140
Temperature in °C
Resistance in kΩ
25
Fig. 47 Sensor type: NTC 20 kΩ
1.
Disconnect plug TS2
&
from the electronics mod-
ule. Measure the resistance.
2. Compare the sensor resistance to the curve.
3. In the event of severe deviation (> 10 %), replace
the sensor.
Troubleshooting
Repairs (cont.)
6167586
Diagnosis