glow-worm combi - hot water turns cold at random

Discussion in 'Plumbing and Central Heating' started by ADONAI, 3 Jan 2010.

  1. ADONAI

    ADONAI

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    Hi,
    even with the heating off,the boiler can take 10 minutes to produce warm tap water,then without doing anything it will then turn cold again.

    can anyone identify a possible cause and solution?


    thanks in advance.

    Ad.
     
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  3. HuwG

    HuwG

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    Glow worm and Combi. Thats a lot of different boilers. Can I have a model? (Well, obviously not the leggy blond type :( )
    What Combi's are available in your location?
    Huw.
     
  4. jertzey

    jertzey

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    prob needs a new diaphragm in diverter valve
     
  5. jertzey

    jertzey

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    i will fix it for free if you send the air fare!! (just saw your location! - hope you get it sorted straight away :D )
     
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  7. ADONAI

    ADONAI

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    thanks Huw.i can provide one of your requests-its a compact 100E.


    also to get warm water ,the tap needs to be on a very low flow rate.

    Approx 7 years old.weve had problem over 1 year.


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  8. wetshoes

    wetshoes

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    I agree with Jertzee, probably a diaphragm/divertor valve problem.
     
  9. ADONAI

    ADONAI

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    thanks. How does this account for the temperature rising and dropping despite you doing nothing to affect the flow thro the boiler ?
     
  10. HuwG

    HuwG

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    Water section. Just a diaphragm needed. Unusual star shaped screws to get to it. Pi ss easy to change though. Dont hang about, its bound to be leaking into the DHW switch. Compacts leak for fun.
    Huw.
     
  11. DIYnot Local

    DIYnot Local

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