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UPDATE : the burner is going out because the overheat switch is tripping, if I leave the water running the burner re-lights once the cold water flow has cooled the boiler a little, it then runs for maybe 10 seconds and then trips again. I was told it could be a blocked heat exchanger, the one...

Ive read there is some kind of timed shut off. I would have thought it was waiting for a fan to start and then it would kick in full but there doesn't seem to be a fan, I don't have any documents so can't look in there. Do you know if it could be some kind of pressure switch? It doesn't seem...

Apologies if this is already covered, i've searched but no joy. The boiler is Vaillant combi-compact VCW GB 221H and G.C# is 47 044 14 CH works fine Diverter switches when the hot tap is switched on Boiler fires for 10 seconds then flames go out but ignition stays lit. Can anyone shed...

Yep, thats the ugly beast. Are you on commission from TLC-Direct? I think thats what I'll use but wanted something a little less bulky.

I will have a plumbed towel rail in zone 2 in my bathroom with a electric element with cable tails. I want this to be on a 7 day timer but am unsure of the regs for this as the only fused spur with this sort of timer on it has a switch. It also looks a little untidy. Can I fit a standard...

what would the outcome of having an expansion vessel with no pressure in it?

OK I have checked this out a bit more. I get hot water. when I turn the heating on the valve switches and the pump runs but it does not fire. When I turn the boiler off completely and then re light the pilot the boiler fires for both CH and HW but if I keep switching between the 2 using...