Correction; Remove Front Panel; Check Boiler Temperature Sensor - Viessmann VITODENS 100-W WB1B Series Installation And Service Instructions Manual

Correction

Remove front panel

Start-up and Maintenance
Fig. 69

Check boiler temperature sensor

Fig. 70
Boiler water temperature
Troubleshooting
1. Loosen the screws at the
bottom of the boiler; do not
remove completely.
2. Remove the front panel.
1. Disconnect cables from boiler
temperature sensor A.
2. Measure resistance of the boiler
temperature sensor and
compare with resistance/boiler
water temperature curve shown
on the left.
3. If the value measured differs
significantly, replace the sensor.
WARNING
The boiler temperature sensor is
immersed in the heating water (risk
of scalding).
Drain the boiler before replacing the
sensor.
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