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Grasslin OE2 does not switch off

Discussion in 'Plumbing and Central Heating' started by Jerry Mallett, 17 Oct 2019.

  1. Jerry Mallett

    Jerry Mallett

    Joined:
    17 Oct 2019
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    Country:
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    Just fitted my 2nd Grasslin OE2. Thought the first one was faulty but now this new one is just as bad.
    Switches heat on and off no problem. Timer works no problem. But when I switch it off it will take up to 60 secs or there abouts before my Popular 90 boiler shuts down.
    And then for no apparent reason it will switch on again without the Grasslin being activated. No lights on the grasslin, looks like its off. The indicators indicate it's off, but the boiler is kicking in on it's own. When it doed this it only heats the hot water, not the rads. I have to take the clock of the wall to get it to stop. Had an electrician in to look at it, he could see nothing wrong and suggested I get a priest to perform an excorcism. ( If I thought it would work!!!!).

    Anyone got any ideas..
     
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  3. ianmcd

    ianmcd

    Joined:
    15 Aug 2010
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    Location:
    Lanarkshire
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    HW zone valve sticking or 3 port valve fault depending on your system
     
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