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24 Dec - update - Grundfos pump still runs constantly

Discussion in 'Plumbing and Central Heating' started by Littlemiss21, 11 Dec 2018.

  1. picasso

    picasso

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    Hope bg finally get your problem sorted.
     
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  3. Gasguru

    Gasguru

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    They'll be back....but 29 visits is the record for one of my customers (I'm just used as a last resort).
    10 visits is only the start...trust me.
    They need to forget the zone valves...
     
  4. Littlemiss21

    Littlemiss21

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    Noooooooo!!! I’m really really hoping and praying that the 10th visit from BG was the final one. I’ve no desire to beat your customers record of 29 visits!
     
  5. Dan Robinson

    Dan Robinson

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    10 visits for an s plan ? Jeepers.

    It's hardly rocket science. It's two bloody switches in parallel.
     
  6. mcmarshon

    mcmarshon

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    Another drayton ? Perhaps time to try a Honeywell, as you know the definition of insanity ?
     
  7. GasElectricalRepairs

    GasElectricalRepairs

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    Have you had a new pump yet , or problems start with new pump.
    I had a job where the grindfos pump was taking out programmers for fun.
    Causing contacts to weld shut or fail.
     
  8. Littlemiss21

    Littlemiss21

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    Hi
    No, no new pump, the Grundfos pump runs fine (just runs constantly with a live feed from somewhere).
     
  9. GasElectricalRepairs

    GasElectricalRepairs

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    There was a batch of Grunfos pumps that was causing problems with controls. The pump appears to work ok , but does cause damage.
    Can you post a pic or model number of your pump?
     
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  11. Littlemiss21

    Littlemiss21

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    70D2D188-B72D-48CF-BF04-3D04A3981AB0.jpeg Hi
    Thank you so much for your message.
    I’ve attached a pic (I’m at work at present so could take another when I get home). It was installed in approx July 2008 when the house was built.
     
  12. GasElectricalRepairs

    GasElectricalRepairs

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    S plans are quite easy to fault find , but it does sound like something is what I call “eating parts”.

    If the circuits all test ok , I would fit a new pump and see how you go.
     
  13. breadnbutter

    breadnbutter

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    your right, but what I think is there might be a fault in the cable or one of the cables that feeds to the boiler and pump, switch live is traceable on site in fault condition with a multimeter.
     
  14. GasElectricalRepairs

    GasElectricalRepairs

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    Before you swap the pump , can you post the PC number from the front of the pump please?
     
  15. GasElectricalRepairs

    GasElectricalRepairs

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    It could be , why are the zone valves being changed? Are the switch contacts shorted?
    How often do these faults happen?
     
  16. fixitflav

    fixitflav

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    If all you have is thermostats (room and cylinder) and zone valves, and perhaps a simple programmer, it sounds to me it could be sorted by a competent electrician. The fact that the wiring relates to a heating system is irrelevant, so BG can't bring anything to it (as they've shown). Even if you have things like smart TRVs, or a more sophisticated programmer it shouldn't be too hard.
    If you're definitely getting constant 240 volt at the pump, and it seems you are, I can't see how changing the pump will cure it.
     
    Last edited: 20 Dec 2018
  17. breadnbutter

    breadnbutter

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    drayton valves are well know to fail on the switches, creating a constant live to orange after satisfied something to do with a plastic arm breaking.
    but would not of thought new ones would fail so early, so only thing I can think of is a break down in one of the cables.
     
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