I have a vaillant combi boiler that is stuck on hot water only, when calling for heat it coems on heat fro 10-20 secs and stops, then repaeats, is this the diverter valve?
I have a vaillant combi boiler that is stuck on hot water only, when calling for heat it coems on heat fro 10-20 secs and stops, then repaeats, is this the diverter valve?
Which boiler model is it? Had the same kind of problem with the VCW SINE 18 (really old but faithful), and it was the main heat exchanger. Purchased one for ?180 and it's been going since. Send more info and might be able to help.
sounds like diverter valve , ive had same problem 3 times over 25 years that cured it
Hidden Content i hope he got it fixed, 2008 is a long time to go without heating
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