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Mend Viessmann 100W Fault Check Fan

How can I fix Viessman 100W?

I have fault 9 in desplay. My instruction sais check fan and connecting cables. I do not see were to find these in the instruction manual.

Colin
May 2010
ViessmannViessmann 100WHeating, Home Heating SystemsFault Check Fan
Don't bother trying, it is a sophisticated boiler, as you are obviously not an engineer I suggest you call someone who has been trained on these appliances.

Andy
May 2010

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