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Thread: Constant pressure drop!

  1. #1
    Automated Home Lurker
    Join Date
    Nov 2006
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    2

    Default Constant pressure drop!

    Hi, I got a Valliant combi boiler and the pressure is drop from normal to empty in twenty minutes, I think the overflow valve is stuck open slightly as water is dripping out the overflow. How do I check if valve closing properly :?: :?:
    Thanks

    Update: Boiler is switched on but now no heating!!

  2. #2
    Moderator sunbeam's Avatar
    Join Date
    Feb 2006
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    lancs
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    261

    Default Re: Constant pressure drop!

    it sounds like there is a bit of muck on the valve seating,

    you could turn on the filling loop and keep it running whilst at the same time turning the pressure release valve top and letting it bolw off,

    see if it gets rid of any muck.

  3. #3
    Automated Home Lurker
    Join Date
    Nov 2006
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    2

    Default Re: Constant pressure drop!

    Thanks Sunbeam, Will try that again tonight, if wife not had plumber out.
    Thanks

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