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  1. A

    Central heating works but not hot water

    I've just realised what you meant and wiggled the thermostat on the cylinder. I then switched on the hot water and the boiler miraculously sprang into life. I don't know why, I'm just grateful that it has. Thanks for your help, I've learned a little bit about hot water systems from this...
  2. A

    Central heating works but not hot water

    Sorry too technical for me. What's a cylinder stat? There's a pipe with a tap going in to the top of the hot water cylinder. When I switch on the hot water on the control unit, the power light comes on but nothing else happens i.e. the boiler does not fire.
  3. A

    Central heating works but not hot water

    I have updated my original call
  4. A

    Central heating works but not hot water

    My central heating is fine but although the light comes on on the control panel when I select hot water, the boiler does not fire up and water is not heated. It's a Potterton Netaheat (circa 1985!) and a Siemens non-digital control unit which I bought to replace the original less than a year ago
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