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Potterton Puma 80 no CH?

the radiator next to the boiler will work, but there is no heating in the rest of the house. hot water is ok. Plumbers galore have looked at it and never come back to me. Can anyone help. Boiler is 7 yrs old
Fullwood, February 2009
sounds like a faulty divertor valve

mike, February 2009
Hot water tap drip will cause this fault

a, February 2009
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