Boiler just won't shut off !

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  • AJ
    Automated Home Lurker
    • Mar 2006
    • 3

    Boiler just won't shut off !

    My Potterton Netaheat 80e (15 yrs old) just keeps on running, even with the thermostat down to zero, the programmer set to off ..... and even with the programmer taken off the wall to leave just the connectors! Both hot water and central heating are permanently on.

    Obviously it shuts off when I turn off the power completely but then comes on immediately I switch it on. This has suddenly happened without anything else being touched.

    I hope that someone out there might have an idea as to what could be wrong.
    Alan.
  • sunbeam
    Moderator
    • Feb 2006
    • 261

    #2
    Re: Boiler just won't shut off !

    Is there a frost stat on the system?

    Comment

    • AJ
      Automated Home Lurker
      • Mar 2006
      • 3

      #3
      Re: Boiler just won't shut off !

      Thanks for the suggestion .... but no, there isn't.
      Alan.

      Comment

      • botmission
        Automated Home Lurker
        • Mar 2006
        • 6

        #4
        Re: Boiler just won't shut off !

        If you have motorised valves, check if they are stuck in the on position.

        Comment

        • sunbeam
          Moderator
          • Feb 2006
          • 261

          #5
          Re: Boiler just won't shut off !

          the neat a heat does have a perminent live for the pump over run. could well be circuit board.

          Comment

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