Boiler flame loss

Discussion in 'Plumbers' Talk' started by Mr A greig, Nov 3, 2018.

  1. Mr A greig

    Mr A greig Member

    I've got a newish ideal combi boiler that blows out if it works too hard.
    You can hear the it ramping up then fluttering and cutting out.
    I think it might be the flue as I've come across the same thing before and that was the issue.
    The flue has a little cap on the bend that can be removed. The chamber inside is full of steam which seems odd as Im sure the external part of the flue should be air intake.
    My theory is combustion products are getting mixed with air intake some how.
    Any thoughts?
     
  2. Mike83

    Mike83 Active Member

    The little cap leads directly to the inner flue to measure the products of combustion.
    This is normal.
    Are there any faults showing on the boiler?
    The condensate pipe or trap may be blocked.
     
  3. Mr A greig

    Mr A greig Member

    Ahh my mistake thanks.
    F2 flame loss.
    If the condensate drain can cause this its a Likely contender as it's not been fitted properly. It's got large u bend in it.
     
  4. Mike83

    Mike83 Active Member

    A photo of the setup would help. The area around the u bend.
    The u bend could be blocked.
    F2 can be numerous issues.
     
  5. Mr A greig

    Mr A greig Member

    When I say u bend I mean the pipe curves down under the floor then up and out the wall. I was told it shouldn't be like that.
    I'll inspect the condensate drain when I can.
    I hope that's the problem as the gas valve valves are pretty expensive.
    Do you think a problem in the flue would cause the same issue?
     
  6. Mr A greig

    Mr A greig Member

    I'm not going near the gas.
     
  7. Mike83

    Mike83 Active Member

    Problem with flue would be evident from day 1 with a new boiler.
    Condensate could be backing up into boiler. Try disconnecting from under the boiler.

    Ignore the idiots.
     
  8. Mike83

    Mike83 Active Member

    Jog on.
     
  9. Mr A greig

    Mr A greig Member

    Sound thanks.
    I'm out, this thread is deteriorating rapidly.
     
  10. Mr A greig

    Mr A greig Member

    Condensate pipe is fine. Some sections of the gas have been re run. Is it possible that dust got it and is partially blocking gas flow?
     
  11. Mike83

    Mike83 Active Member

    Boiler needs the once over by an engineer.

    Is the boiler not under warranty?
     
  12. Mr A greig

    Mr A greig Member

    Think so but moved in recently and don't have any of the warranty details
     
  13. Dave does Gas

    Dave does Gas Well-Known Member

    Phone the manufacturers customer services they will advise about the warranty from your post code
     
  14. Mr A greig

    Mr A greig Member

    Ok thanks I'll give that a go
     

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