Viessmann Vitopend 100-W Installation And Service Instructions Manual page 40

Troubleshooting
Repairs
(cont.)
4. Flue gas monitoring sensor:
■ Pull the leads from the sensor.
■ Check the sensor resistance and
compare it with the curve.
■ Replace the sensor in the case of
severe deviation.
Note
Function check of the flue gas mon-
itoring device, see page 28.
Checking the fuse
Note
Switch off the power.
40
5. Cylinder temperature sensor (gas
system boiler):
■ Pull plug % from the cable har-
ness outside the control unit.
■ Check the sensor resistance and
compare it with the curve.
■ Replace the sensor in the case of
severe deviation.
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