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Discuss Underfloor heating, 1 side not working. in the Underfloor Heating Forum area at

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  1. armyash

    armyash Plumber GSR

    I have to look at a job tomorrow. The cust called and said that one side of the room works fine but the other side doesn't work at all. Reckons 1 half hasn't been connected up.

    Sounds a bit strange, I asked if it's always been like that and he said yes. Installed approx 1 yr ago.

    Also said he can only work the ufh if has the whole house heating on. Sounds like it may have been connected up wrong and needs to be on a separate zone.

    Will find out more info tomorrow but find it strange that he hasn't had it rectified by original plumber.

    Reckon it's either been done by a cowboy who now won't answer the phone or he's done it himself.

    I have never done much with ufh but happy to learn.

    Any gurus here who can give a heads up on what to look out for on this limited info?

  2. Vee

    Vee Plumber GSR

    Might that flow to the loops hasn't been setup on the flowmeters evenly or not even opened to flow or air lock in particular loop or manifold (if not level).
    Should be piped to have its own flow and return from the primaries after the pump via zone valve. Sounds as if its wired to only come on with the main room stat / heating which is incorrect. Should have its own zone control thermostat, zone valve and S/L to boiler.
    Let us know how you get on.
  3. armyash

    armyash Plumber GSR


    Haven't been yet, cust rescheduled. Will update if he rebooks.
  4. oz-plumber

    oz-plumber Plumber

    If you go there take a few pics of the manifold / pump setup and the boiler set up.
    Get details on the thermostat controls and how they are meant to operate.

    Might be beneficial posting in the PA
  5. armyash

    armyash Plumber GSR

    Thanks, not heard back yet.
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