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  1. M

    Vaillant VCW GB 221H no DHW boiler fires but goes out after

    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...
  2. M

    How to wire a timed electric towel rail

    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...
  3. M

    combi boiler expansion vessel

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

    Vaillant Combi HW is OK, CH is cold...Updated

    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...
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