1. Visiting from the US? Why not try DIYnot.US instead? Click here to continue to DIYnot.US.
    Dismiss Notice

Combustion chamber seal leaking- what does this cause?

Discussion in 'Plumbing and Central Heating' started by hosburger, 12 Nov 2008.

  1. hosburger

    hosburger

    Joined:
    21 Oct 2008
    Messages:
    25
    Thanks Received:
    0
    Location:
    Surrey
    Country:
    United Kingdom
    I have a Baxi system 100 he plus with several faults.

    When heating rads from cold to hot system pressure goes too high. Sometimes it goes to overheat lockout. Occasionally the boiler won't start at all and goes to ignition lockout. I am regularly topping up system pressure.

    I have checked the spark electrode gap which is spot on. But noticed that the combustion chamber door seal is definately perished and letting by. Also the felt gasket behind the spark electrode and sensor is missing.

    Could someone please explain exactly what a badly sealed chamber means and what it can cause. I am guessing that like an engine too much air will cause it to burn 'lean' and too hot ?

    Many thanks in advance.
     
  2. you can get carbon monoxide leak and the aps may not meet it's trigger pressure. This is a job for a CORGI engineer!
     
  3. Sponsored Links
  4. muggles

    muggles

    Joined:
    28 Oct 2005
    Messages:
    13,330
    Thanks Received:
    3,072
    Location:
    Daventry
    Country:
    United Kingdom
    Your first problem is most likely due to a blown or depressurised expansion vessel

    The CC door seal fault will cause the products of combustion to leak out of the CC. This can, as dangermouse said, include carbon monoxide, which can kill you. And you can't smell carbon monoxide so it'll get you before you even know it.

    You need a CORGI engineer to come in and sort you out.
     
  5. bengasman

    bengasman

    Joined:
    28 Jan 2005
    Messages:
    34,181
    Thanks Received:
    3,124
    Location:
    London
    Country:
    United Kingdom
    In the meantime, turn the boiler off completely
     
  6. DIYnot Local

    DIYnot Local

    Joined:
    3 Sep 2019
    Country:
    United Kingdom

    If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

    Select the supplier or trade you require, enter your location to begin your search.


    Are you a trade or supplier? You can create your listing free at DIYnot Local

     
  7. Sponsored Links
Loading...

Share This Page