Mixer tap turns on by itself

Discussion in 'Plumbing and Central Heating' started by dsaucex, 20 Nov 2021.

  1. dsaucex

    dsaucex

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    I have a combi boiler driven heating system and a mixer tap in the shower, the one with temperature control knob.
    After a shower, when I turn off the tap, it doesn't go to zero position but the water stops completely at say 30/100 position (100= fully open). Then after few hours, mostly in the night when combi boiler is not being used for hot water or heating, the tap starts to run water and then i am able to close it to 0/100.
    This obviously leads to some water wastage and inconvenience.
    What could be the reason of this behaviour?
     
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  3. footprints

    footprints

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    At a guess if it uses a conventional washer it may be swelling up in use and then shrinking when it cools. I would whip it out and see if a new washer cures it.
     
  4. johnny2007

    johnny2007

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    Call an exorcist...
     
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