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No heating on my ideal combi boiler

Discussion in 'Plumbing and Central Heating' started by Eddytor, 23 Sep 2021.

  1. Ihavenojob

    Ihavenojob

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    Have you turned the pre heat off as suggested earlier? With this on and a slightly dripping hot tap you won't get heating. Also, did you top the pressure up ? I think these boilers have the filling loop tap close to an isolating valve on the heating pipes, and sometimes the wrong valve can be closed.
     
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  3. ianmcd

    ianmcd

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    Display on the boiler would still change to C in either of those situations
     
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  4. Eddytor

    Eddytor

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    so, I just bleed 2 radiator to see what would happen, only (gross) water came out, at a constant flow, there was no air.
    I managed to reduce the pressure to around 2.5 bars, but unfortunately it made no difference.

    I also made sure to turn some of the position on the theromstats to "off" and everything seems to be fine with it: When the mode is set to the "clock" the red light is contant on at times when the radioators are supposed to be on, and flashing red when the radioator are supposed to be off.

    Preheat was turned off yeah, but no difference.
    As for your other suggestion im not sure I understand what im supposed to do. As I said there about 6 valves under the boiler, and i'm not sure at all what position these are supposed to be on. If the issue is indeed that the wrong valve is off, I dont know hwo to fix it, or where to look up how it's supposed to be.
    Although as ianmcd suggested, I guess the boiler should still display a different letter if the heating demand was registered.

    I did however managed to reduce the pressure a bit by bleeding the radiators, but this made no difference


    Also just as a test, I wanted to make sure the right button ( boiler off / HW / HW + heating / reset) was working fine for all position, not jsute for the "reset" feature.
    So I turned it to "boiler off", tried to turn on the hot water tap and nothing happened. Then I moved it to "HW" and immediately the letter "d" for water water demand was dispalyed.
    So the button definitley seems to be working fine.

    If anyone have anything else to suggest, I'd be happy to try it, otherwise, I might try to get a handyman to come and look at it
    Once again, thank you to everyone who took the time to read and post a message.
     
  5. CBW

    CBW

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    Please don’t get a handyman to look at it, you would need a gas safe registered engineer if the issue is boiler related.
     
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  6. ianmcd

    ianmcd

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    Needs a gas safe registered engineer now, sounds like the little round receiver on the boiler is faulty, very common, but you need to be gas safe registered to remove and refit the front cover, in order to access it
     
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  7. Eddytor

    Eddytor

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    Update:
    There was many issue and i cost me so much money :cry:

    I struggled a bit to find a technician as all of them were very busy. I ended up finding one though some contact

    They guys found a fault between the receiver and the boiler itself, apparnelty they were not compatible and that ended up damaging both components
    So that was 200£ to replace the part on the boiler and 60£ to replace the tehromstats and receiver
    After that, the pressure kept dropping and so i had to co,tact his again, as he had to replace the exeonsaion vessel, for abother 200£

    In the end, including the labour, that cost me around 700£, whihc is so much more than what i was hoping to pay, but at least now it working

    Thank you again to everyone who helped me!
     
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