viessmann

Hi, Are there any Viessmann experts out there who could give us some idea why I cannot change out the weather compensated control unit for the standard one? We have a Vitodens 200 WB2B with weather compensation which we have had for approx 7 years, its been nothing but trouble - started with...

hi all. We recently installed a Viessmann B2HB 200 series boiler and a Viessmann vitocell indirect hot water tank. The heating side has been online and working for the last month. We commissioned the hot water tank yesterday, it worked fine for 24 hours. Now, when there is a DHW call on the...