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vaillant 242e?

i have a vaillant 242e combi boiler the hot water only works if the hot water & heating switch light is on, what's my problem, can anybody help please? Hot water light doesnt come on at all.

cos, July 2009

home Fix label Heating label_important Home Heating Systems category Vaillantdone

Sounds like the dhw diaphragm needs replaced.

Ian, July 2009

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vaillant 242e?

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vaillant 242e?

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