Viessmann Vitodens 200 Service Manual page 86
8.8 to 26.0 kw gas fired wall mounted condensing boiler natural gas and lpg version
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Also See for Vitodens 200:
- Technical manual (180 pages) ,
- Installation instructions manual (148 pages) ,
- Service manual (125 pages)
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Troubleshooting
Repairs
(cont.)
Checking the boiler temperature sensor, cylinder tempera-
ture sensor or the flow temperature sensor for the low loss
header
86
1. Boiler temperature sensor: Pull the
leads from boiler temperature
sensor A and measure the resis-
tance.
Cylinder temperature sensor: Pull
the plug % from the cable harness
on the control unit and measure the
resistance.
Flow temperature sensor: Pull
plug X3 from the control unit and
measure the resistance across
terminals X3.4 and X3.5.
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