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Thanks for the reply, I have long suspected the zone / 3 way valve due to one of the radiators coming on whilst only having the hot water on. I did not hear the banging noise but my wife says it was like the pipes in the airing cupboard were 'jumping'? If I get the valve replaced, would...

Newbie here and apologies if I'm a little vague but I am away from home at present so can only go on what my wife says!!! :oops: She says that there was a banging noise coming from the airing cupboard and that the central heating pump was red hot. I told her to turn it all off and stick...