Viessmann VITODENS 100-W Installation And Service Instructions Manual page 33

7.9 to 26.0 kw wall mounted gas fired condensing boiler natural gas and lpg version
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Repairs
(cont.)
Checking the boiler water temperature sensor and return tem-
perature sensor
A
B
1. Pull the leads from boiler water tem-
perature sensor A or return temper-
ature sensor B and check the resist-
ance.
Troubleshooting
33

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Vitodens 100-w wb1b

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