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No heating on my ideal combi boiler

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

  1. Eddytor

    Eddytor

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    I tried pressing the small black button on the receiver, the light tunred off for about a minutes, then cam bakc to the same situation. I tried using the "reset" feature on the boiler itself, but no difference


    The pressure is about 3 bars, with a maximum of 4


    As I said, I genuinely beleive the receiver and the thermostat are now in sync, because the light do react 5/10 seconds after I touch the thermostat ( constant red light when I set the temperature high, or frequent red flash when i set it to low, so it seems like the receiver is pick up on that. I made a video to show what I mean)


    No matter what i do the boiler itsef stays on "0" (unless i turn on a tap for ot water, then it dispaly a hot water demand for a bit)
    Is it possible that some of the valves are not set up right?

    Once again, thank you so much to everyone helping and taking the time to reply, this is highly apprecaited.
    I had to go buy a hot water bottle today as the nights are getting very cold without heating.

    bboLgprR.jpg MrxhHNX9.jpg
     
    Last edited by a moderator: 24 Sep 2021
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  3. CBW

    CBW

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    That’s far too high, confirmed with your photos, so likely the heating or running hot water for long periods will knock the boiler off. Some have a low and high pressure cut off.
     
  4. ianmcd

    ianmcd

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    Yes you are correct I was thinking of a different make, if the light on the boiler is now solid red when heat demanded, then it is now paired
     
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  5. ianmcd

    ianmcd

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    Just seen your video, the thermostat is now paired, a very common fault on your boiler , is that the spindle behind the control knob on the CH/HW control knob snaps, it feels like you are turning it but you arent turning the spindle, so the boiler might be set to HW only, and turning the control knob doesnt actually do anything
     
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  6. ianmcd

    ianmcd

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    when you turn the mode button on the boiler clockwise to reset does the display change from O to ... then back to O when you release it ?
     
  7. Harry Bloomfield

    Harry Bloomfield

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    It reads as if the thermostat is paired and doing what it should..
     
  8. Tricky-Dicky

    Tricky-Dicky

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    Hi, might help or not, the pic of your remote shows midnight, set to the correct time. The thumb wheel for the room temp need turning anti-clockwise to increase the room temp, rather counter intuitive. All the tappets around the clock are set to 'on', change to some on and some off. Trying to remember any more tips, as my daughter had the same set-up with problems. Hope this helps.
     
  9. sbgasman

    sbgasman

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    he is getting hot water, so must have pressure in the system, pretty basic stuff.
     
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  11. ianmcd

    ianmcd

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    Fancy a virtual pint bet that it is the mode knob spindle has split ? :LOL::LOL:
     
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  12. Eddytor

    Eddytor

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    I tried to leave all tap running hot water for a couple minutes but the rpessure did not really go down at all. I'm not sure a pressure too high would cause the heating to not working at all though, no?



    Do you mean the button on the very right ? So you beleive that the button hitself would be broken ?
    BOTiz4pg.jpg

    When I use the reset feature, the wole display turn off for a few seconds, then the boiler starts to "work" ( make noise and vibration) for a few minutes, then go back to 0 after a few minutes yes.
    So at least the reset feature definitely does something. Not sure how to tets if the other features are working normally.
    Edit: made another video to show you



    I did set up the thermostat properly after adding batteries etc. I will try setting it as "off" a certain times but, given that the receiver seems to pick up on the water demand from the theromstas, i believe the issue is more with the boiler itself or at least between the boiler and the receiver.


    is it possible that some of the valves are not set up properly ? I have tried switching the position for them one by one, to see if something would happen, but it did not seem to do anything. Only one of the pipie is hot. Is there somwhere a guide on how the valves are supposed to be set up ?

    Thank you everyone who is trying to help, this is super helpful.
     
    Last edited: 25 Sep 2021
  13. Harry Bloomfield

    Harry Bloomfield

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    If you mean the hot tap, the tap has no direct bearing on the pressure in the heating circuit.

    I understand some boilers include an inhibitor for both the usual low pressure at around 0.5 Bar and one for over pressure at around 3.0 bar. Your PRV should also operate at around 3.0 bar. Try releasing some pressure by bleeding a radiator.

    One more point - It looks as if the time clock is set for always on, via the mechanical 'fingers'. None of the fingers seem to be off. I have known such clocks be stuck in the off position despite the fingers all being on. You might try setting some to off periods, rotating the dial whilst listening, to see if you get a positive click to back on.
     
    Last edited: 25 Sep 2021
  14. ianmcd

    ianmcd

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    Then the spindle has not broken (and it didnt go blank it went - as I said :) ) on the mode switch, that is good news for you, to drop the boiler system pressure go to any radiator armed with a bowl or pot of some kind, open the bleed point to catch the water that comes out until the pressure guage drops to about 1.5 Bar, no need to worry about that at this stage , that is not what is stopping the boiler from coming on, when you run a hot tap what does the display on the boiler change to ? And you have cost me a virtual pint to @sbgasman :evil:
     
    Last edited: 25 Sep 2021
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  15. Eddytor

    Eddytor

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    Yeah I did set it up as "always on" to make sure this was not the issue, i've tried changing it again, but since the receiver is picking up on the demand, I dont believe the issue is with the thermostat itself


    Yeah, it disaply "d" I beleive, or whatver letter correspond to "hot water demand"

    Honeslty, everything seems to be working just fine, except that the boiler is not picking up, or acting up on the heating demand for some reason :(


    As for the virtual pint, if someone manage to find a solution, I might save over 200£ so i'll be hapy to offer a virtual pint or two :D
     
  16. Harry Bloomfield

    Harry Bloomfield

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    Have you tried the suggestion I made above in post 26 to try reducing the system pressure.
     
  17. ianmcd

    ianmcd

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    The HW is working his problem is nothing to do with the system pressure
     
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