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  1. A

    Central Heating not turning off

    Yes, process of elimination I guess!
  2. A

    Central Heating not turning off

    Old Programmer was a Danfoss CP715 and the new is a Honeywell ST9400C. The new valve is a Honeywell 4043. The valve spindle is free. I know the motor in the head works to power on heating as I hear it, when turning off it doesn't do anything until I cycle power. Haven't had it off as the heating...
  3. A

    Central Heating not turning off

    Just the head
  4. A

    Central Heating not turning off

    Hi all, Apologies that my first post is a request for help but I guess that's the nature of these forums. I have an issue that I can't seem to get to the bottom of and wanted to ask for some help. In a nutshell my central heating won't turn off without cycling the mains power to the boiler. It...
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