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Mend Vaillant vcw gb 221 h Heating Faulty

vcw gb 221 h. vaillant combi ?

my heating keeps switching it self on even with the timer removed i have removed the link between 3 and 4, the only way i can turn the haeting off is by switching the heating switch off..

ant
September 2010

Vaillant Vaillant vcw gb 221 h Heating, Home Heating Systems Heating Vaillant Faulty

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Vaillant vcw gb 221 h - Heating On Issue