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Hi All, I have a 2005 Viessmann 100 type 7179916 I recently purchased a Viessmann original weather compensation sensor for use with this boiler. I was told it would come with instructions but it doesn't! 1) Does anyone know how the weather compensation sensor should be connected? 2)...

Hi all, I've got one of the above boilers and I suspect the ignition module and control unit are faulty (after the research I have done). No volts are going to the ignition module... Can anyone tell me: Are the different part numbers of control units interchangeable? Looks like the...