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  1. P

    Honeywell sundial y plan 3 position diverter valve

    Hw, that's hot water tank in airing cupboard
  2. P

    Honeywell sundial y plan 3 position diverter valve

    I've played with the leaver at the side which seems floppy. No difference, still hot upstairs, warm down. Seems even when just ch on, system still heats hw
  3. P

    Honeywell sundial y plan 3 position diverter valve

    Hi, this may have already been discussed but my issue may be different. Had a new boxt install 12 months ago. All seemed ok at the time. But now notice radiators down stairs only warm, upstairs really hot. Setup new insurance via homeserve to ensure Worcester Bosch boiler garentee.and they...
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