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I am currently having to turn my boiler off at night via the fused spur so that it doesn't run all night, as it seems to be constantly on even though the programmer is timed off. I have a 10 year old Y-plan system with Glowworm boiler & Drayton mid-position valve. I recently had a problem...

Update. Had an engineer round (friend of a friend) - after a few checks they seem to think that it is the PCB at fault. They said that with the programmer off the wall (disconnected) the boiler was still trying to light, which it shouldn't. He had a quick look at the PCB but couldn't see...

Thanks for all the advice chaps. Namsag You mention a sticking microswitch on motorised valve - where is this switch/valve located ? Yes there are 2 solenoids - how easy is it to swap them over ? Is it just a case of isolating AC supply & unplugging or is it a bit more technical. I am a...

Firstly hello to everyone out there - I hope someone can help me. As per subject, my boiler has suddenly decided to stop working. The pilot is sparking, but is not lighting. One thing I noted was that the boiler is trying to light (sparking) even though I am not calling for heat ie. CH & HW...