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Baxi Solo 2 50PF - Works for 10 minutes only

Discussion in 'Plumbing and Central Heating' started by fizzlebiscuit, 18 Nov 2012.

  1. fizzlebiscuit

    fizzlebiscuit

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    Help Needed!

    We have a baxi solo 2 50PF boiler that operates within a sealed (unvented) system.

    If we have left it a while, it fires up fine, and all the lights (boiler/fan/pilot/burner) go on. All the radiators heat up. But after 10 minutes, the burner turns off and don't restart. Everything gets cold. So we have to turn it all off, wait a while and then restart it.

    It doesn't always restart straightaway. Sometimes it will restart and all the lights go on apart from the burner light. We then leave it for an hour or so, and try again.

    This happens if we are turning the hot water on and/or if we are turning the central heating on.

    Radiators have all been bled. Pressure is fine.

    Why does the burner stop working after a short while? Would really appreciate any help/guidance/suggestions you have.

    Many thanks

    Jacqui
     
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  3. stardanny

    stardanny

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    When it stopped, does the overheat light come on?

    Dan.
     
  4. fizzlebiscuit

    fizzlebiscuit

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    No, the overheat light doesn't come on. Any ideas?!

    [We had an overheating problem in the past which linked to no pressure in the system. We have checked the pressure which is fine].
     
  5. stardanny

    stardanny

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    When it stopped, which light still on?

    Sound like the PCB playing up, maybe dry joint.

    Dan.
     
  6. fizzlebiscuit

    fizzlebiscuit

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    All the lights turn off after 10 minutes or so except the boiler light.
     
  7. stardanny

    stardanny

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    Strange! it should be the same regardless of which hw or heating or both calling for heat.
    I would arrange for a rgi boiler engineer to check out.
     
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  9. fizzlebiscuit

    fizzlebiscuit

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    Sorry, I was wrong, after 10 minutes, all the lights turn out except the boiler light. (same for HW and CH)
     
  10. Agile

    Agile

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    Still sounds as if you need an RGI !
     
  11. Had a fault like this a few years back & it was down to the CH zone valve not the boiler.
    Check in your cylinder cupboard, do you have 1 or 2 valves that have a silver box on the top of them?
    If you have 2 (S plan) then it could be that the CH valve is faulty so the boiler will turn off when the HW gets to temp even though the CH is calling for heat.
     
  12. Agile

    Agile

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    Whilst a DIYer can check to see if there is indeed a call for heat at the boiler, Jacqui has not indicated that she has the meter or skill to do thta safely.

    Testing 230v power is potentially dangerous.

    Tony
     
  13. fizzlebiscuit

    fizzlebiscuit

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    Thank you all so much for your help.

    I'm not sure how many valves we have...

    Think I will call someone out tomorrow to take a look
     
  14. DIYnot Local

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