New boiler not working HELP

Discussion in 'Plumbers' Talk' started by Debra Gibbs, Jan 11, 2018.

  1. Debra Gibbs

    Debra Gibbs New Member

    My mum had a combi boiler fitted in October last year, as yet she has not had a full week of it working. She has old pipe work and rads. Firstly the boiler kept cutting out as a lot of air in System, after a lot of complaints they eventually reflushed rads and although air not as bad in rads air goes into boiler and cuts out. We released air out of Boiler, then it would start after repressurising . So company fitted auto release valves on pipe work before the boiler, so now the pressure drops every day, well, through the night when it cools down, and will not work in the morning untill it's been pressurised. The company does not seem capable of working out what the problem is. Please Help help HELP
     
  2. kiaora

    kiaora Active Member

    Hi
    So the system is loosing water, and with that the pressure in the system.

    The obvious thing to consider is there is a leak somewhere, ?

    There will be a pipe outside, used as a safety device, and it may be there the water is going?

    Is the installer trying to solve the problem? Are they competent and registered?

    Regards
    Peter
     
  3. Debra Gibbs

    Debra Gibbs New Member

     
  4. Debra Gibbs

    Debra Gibbs New Member

    The system wasn' losing pressure untill we took air out of rads or boiler. But since they fitted auto air valve the pressure drops because any air that is building up in system can release on it' own. Which stop boiler coming on because pressure has dropped. Company has been back but it' extremely hard work to get them back and after 3 months since it was installed they haven' resolve problem
     
  5. kiaora

    kiaora Active Member

    Hi
    When you say you let air out of the boiler, where did you do this?

    You didn’t ‘bleed the air’ from the expansion vessel?

    Regards
    Peter
     
  6. Devil's Advocate

    Devil's Advocate Well-Known Member

    Debra - the installers have to sort this. And if they cannot, they need to pay for someone else to do so.

    It's as simple as that.

    This is a sealed, pressurised system, so air simply cannot get in to it whilst it's pressurised. That leaves two options - either your system is corroding away at an alarming rate and the gas you 'bleed' is hydrogen, or else the expansion vessel (although new) is faulty and is allowing the pressurised air on one side to get through to the system water. (That's the most likely explanation).

    I can't think of anything else it can be.

    I hope your plumber has checked for these two scenarios?
     
  7. Debra Gibbs

    Debra Gibbs New Member

     
  8. Debra Gibbs

    Debra Gibbs New Member

    There was someone else that had a similar problem in this forum in 2012 but there wasn't a result posted which is a shame. Any way plumber at last is going to have another look, but it is a real puzzle. Thanks
     
  9. Devil's Advocate

    Devil's Advocate Well-Known Member

    Please keep us updated, Debra.

    Don't forget - when he turns up and you place a cuppa in front of him, just casually say summat like "Ooh, it's chilly out, again, isn't it? By the way, do you think it's a perforated diaphragm in the expansion vessel..."
     
  10. Debra Gibbs

    Debra Gibbs New Member

    Ha ha like that one
     

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