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  1. L

    Radiators always on and can't turn heat down.

    Thank you I had a whole new box fitted, system was flushed out and fitted the new box. £110 all in inc labour, I was happy enough with that. It all works a treat now. Cheers
  2. L

    Radiators always on and can't turn heat down.

    Its a Honeywell sundial y plan 3 position diverter valve, is this the culprit? How much is a new one and how long to fit? Thank you by the way. :D
  3. L

    Radiators always on and can't turn heat down.

    Hello, I'd be grateful for any help please. Here's our problem. When my timer (in airing cupboard) calls for heat, the heaters come on, that’s great, but then it gets too hot and I cant turn them down, even though I can turn the heat down to say 20 it ignores the heater switch in living room...
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