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Radiator valves stuck

Discussion in 'Plumbing and Central Heating' started by Keith650, 20 Sep 2021.

  1. Keith650

    Keith650

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    Hi All,
    I have fired up my central heating system for the first time in a few months to find that all my radiators are working fine, except one in my upstairs bathroom. The valve knobs are turned fully open (picture attached) but radiator stone cold. I tried a few things but to no avail. The rad doesn’t appear to need bleeding and neither of the copper pipes up thru the floor is getting warm after waiting 30 minutes from switching heating on. Is it possibly one or both valves is stuck in the closed position? Any help/advice greatly appreciated.
    Keith
     

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  2. terryplumb

    terryplumb

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    Possible blockage on one of them ,doubtful both ,close every other rads TRV and see if it now heats up. If you have a hot water cylinder make sure programmer is only set for central heating.
     
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  4. fixitflav

    fixitflav

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    Have either of the valves been closed since it last worked OK? If not, unlikely to be stuck closed.
     
  5. Eccles

    Eccles

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    In the several houses that I have owned, it's the bathroom rads which often fail to heat and it's nearly always because the have become filled with air. I mean, have you seriously opened the air bleed valve at the top until water comes out?
     
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  7. polesapart

    polesapart

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    Possible that it's plumbed into the cylinder cicuit, and will come on with valves open and programmer and cylinder stat calling for heat.
     
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