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Glowworm 25 pressure

  • 09-02-2021 11:21pm
    #1
    hotshots85
    Registered Users, Registered Users 2 Posts: 337 ✭✭


    Hey,

    Pressure issues on glowworm boiler, pressure fluctuating up and down, shows 1.0 on the boiler when off, jump to 1.8 when running. May the drop to 0.5 when off or even get stuck at 0.0, add a tiny bit with the filling loop (open slightly for half a second) and it goes back to 1.0.

    Anyone any idea before we call someone out?


Comments

  • #2
    K.Flyer
    Registered Users, Registered Users 2 Posts: 8,565 ✭✭✭K.Flyer


    Sounds like an issue with the expansion vessel. Not a DIY job, but a straight forward fix for a Registered Gas Installer on those boilers.


  • #3
    John.G
    Registered Users, Registered Users 2 Posts: 3,623 ✭✭✭John.G


    Maybe just increase the filling pressure to 1.2/1.3 bar or, if RGI not available for a long time, shut off both sides of a double rad, open the vent, slacken a rad connection, drain down the rad, retighten the connection, shut the vent and reopen one side only and re pressurize to 1.3/1.5 bar that will give you a temporary E.vessel and establish if the internal one is failed or a sensor problem but still needs professional help later.


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