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Central heating not working

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13

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  • lesalanos
    lesalanos Posts: 863 Forumite
    Part of the Furniture 500 Posts Name Dropper
    edited 31 December 2020 at 11:41PM
    330d said:
    lesalanos said:
    The immersion heater on top will be heating the water

    Yep just realized that! :smile:

    So it seems the problem is with the boiler. The green flame light is not coming on and the blue light is flashing randomly. Engineer is coming out on Saturday. 

    Out of interest how is the immersion heater activated? I presume its the thermostat at the bottom of the cylinder? It is currently set to 50c.
    There should be a switch in the airing cupboard which turns the immersion on or off.  The temperature will be regulated with thermostat.

    My thoughts are still the 3 way valve but the engineer will be able to tell easier with being able to see and test.  The reason for thinking the valve is based on experience at home 
  • https://youtu.be/Ab5a-rkXhTA
    From what you say I think this shows the same issue
  • 330d
    330d Posts: 629 Forumite
    Part of the Furniture 100 Posts Name Dropper Combo Breaker
    lesalanos said:
    330d said:
    lesalanos said:
    The immersion heater on top will be heating the water

    Yep just realized that! :smile:

    So it seems the problem is with the boiler. The green flame light is not coming on and the blue light is flashing randomly. Engineer is coming out on Saturday. 

    Out of interest how is the immersion heater activated? I presume its the thermostat at the bottom of the cylinder? It is currently set to 50c.
    There should be a switch in the airing cupboard which turns the immersion on or off.  The temperature will be regulated with thermostat.

    My thoughts are still the 3 way valve but the engineer will be able to tell easier with being able to see and test.  The reason for thinking the valve is based on experience at home 
    Yes thanks, hopefully we get it fixed on saturday.

    Out of interest, what is this?


  • 330d said:
    lesalanos said:
    330d said:
    lesalanos said:
    The immersion heater on top will be heating the water

    Yep just realized that! :smile:

    So it seems the problem is with the boiler. The green flame light is not coming on and the blue light is flashing randomly. Engineer is coming out on Saturday. 

    Out of interest how is the immersion heater activated? I presume its the thermostat at the bottom of the cylinder? It is currently set to 50c.
    There should be a switch in the airing cupboard which turns the immersion on or off.  The temperature will be regulated with thermostat.

    My thoughts are still the 3 way valve but the engineer will be able to tell easier with being able to see and test.  The reason for thinking the valve is based on experience at home 
    Yes thanks, hopefully we get it fixed on saturday.

    Out of interest, what is this?


    That's your central heating pump
  • 330d
    330d Posts: 629 Forumite
    Part of the Furniture 100 Posts Name Dropper Combo Breaker
    lesalanos said:
    https://youtu.be/Ab5a-rkXhTA
    From what you say I think this shows the same issue
    Ok thanks. I cannot see the 3 way valve. Could it be in the boiler? 
  • lesalanos
    lesalanos Posts: 863 Forumite
    Part of the Furniture 500 Posts Name Dropper
    330d said:
    lesalanos said:
    https://youtu.be/Ab5a-rkXhTA
    From what you say I think this shows the same issue
    Ok thanks. I cannot see the 3 way valve. Could it be in the boiler? 
    Mine was in the airing cupboard. 

    Its not visible on your pic so if its there it will be behind/under it.  Just follow all of the pipework in there to see if you have 1 there 
  • 330d
    330d Posts: 629 Forumite
    Part of the Furniture 100 Posts Name Dropper Combo Breaker
    lesalanos said:
    330d said:
    lesalanos said:
    https://youtu.be/Ab5a-rkXhTA
    From what you say I think this shows the same issue
    Ok thanks. I cannot see the 3 way valve. Could it be in the boiler? 
    Mine was in the airing cupboard. 

    Its not visible on your pic so if its there it will be behind/under it.  Just follow all of the pipework in there to see if you have 1 there 
    I cant see it unless its behind the cylinder which i doubt as it will be a nightmare to get to! 

    But in my case the boiler is not giving hot water to the taps or the heating. I thought the 3 way valve is faulty if either your DHW or CH is not working, not both.  
  • lesalanos
    lesalanos Posts: 863 Forumite
    Part of the Furniture 500 Posts Name Dropper
    330d said:
    lesalanos said:
    330d said:
    lesalanos said:
    https://youtu.be/Ab5a-rkXhTA
    From what you say I think this shows the same issue
    Ok thanks. I cannot see the 3 way valve. Could it be in the boiler? 
    Mine was in the airing cupboard. 

    Its not visible on your pic so if its there it will be behind/under it.  Just follow all of the pipework in there to see if you have 1 there 
    I cant see it unless its behind the cylinder which i doubt as it will be a nightmare to get to! 

    But in my case the boiler is not giving hot water to the taps or the heating. I thought the 3 way valve is faulty if either your DHW or CH is not working, not both.  
    Best left for the engineer on Saturday 
  • lesalanos
    lesalanos Posts: 863 Forumite
    Part of the Furniture 500 Posts Name Dropper
    edited 1 January 2021 at 12:24AM
    We could spend all weekend trying things  without testing with a multimeter😁

    I would wonder what happens if you turn the immersion off and empty the hot water tank... apart from you can't have a bath as the valve appears to be stuck mid position.
    Edit... I'm pretty much guessing now though which would likely lead you on a wild goose chase.  A little knowledge can be dangerous 

  • Sheeeesh! The hot water has seemingly been from an immersion heater all along?! Lawdie - I didn't see that coming.

    See the red pump, 330d? Have a look on the other side of the red body from the black panel, and see if there's an arrow embossed on the casing. That'll be the direction of water flow. Ok, follow the arrowhead's direction and see where that pipe goes - it should be to the 3-way diverter valve (or might possibly split and go to two 2-way valves). 

    The other end of that pump - not the arrow direction - is coming from the boiler 'flow'.

    That's just info of interest - I'm not suggesting you try anything.

    Please come back and tells us what the plumber found - this one's a mystery :-)  
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