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well, it's all sorted. had a plumber round there for the morning... even confused him. it turned out to be the gas valve, replaced at £110 + labour. he also identified that the pump was on the wrong way round !! i did take it off the other night but was mindful to put it on back as i'd...

No I don't have the bypass. Took the pump off last night and was working ok and no sign of a blockage in fact it was remarkably clean. Had the burners running for a while and now the water within the boiler just isn't getting warm at all. Even drained water from the boiler later and it was...

I see.... On removing the big plug in the centre of the pump I can see the impeller turning. I'll remove the pump tonight and see if there is something blocking the inlet/outlet to the pump perhaps. Cheers

Hi, I don't know whether anyone can help me or not with my heating problem. I have a Potterton 40e Netaheat Profile boiler and it is a gravity system. When my programmer is set to JUST hot water the boiler strikes up nicely and I get hot water. When the programmer is set to JUST central...