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Shower scalding or freezing after pump reinstall

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  • 18-04-2021 10:30am
    #1
    Swampy
    Registered Users Posts: 2,104 ✭✭✭


    Hey all,

    I would appreciate your sage advice. There was a leak in the shower pump which was removed, repaired and replaced. For context this is in my father in laws house and he used a handy man with "plumbing experience".

    The pump is pumping grand but now we either get scalding hot water or freezing water. There is no in-between. Also the hot/cold on the temperature thing seems to be inversed.

    From googling it seems its possible the pipes were replaced in the wrong way or there is a problem with the showers thermostatic valve.

    I have attached pics of the offending items. Any feedback would be appreciated.

    Thanks.


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    #2
    Pete67
    Registered Users Posts: 1,257 ✭✭✭Pete67


    Probably hot and cold supply to the mixer reversed when replacing the pump. First port of call would be to get the installer back to sort it out.


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    #3
    Kencollins
    Registered Users Posts: 567 ✭✭✭Kencollins


    One of the connections on the pump is weeping, so it needs tightening at the very least.

    If the hot and cold supplies are backwards, then of course the thermostatic valve cannot work.

    The cartridge in the valve detects that the water is too hot, so opens the "cold" valve a little more, which is actually the hot, causing the scalding.

    This is actually a dangerous situation, as somebody could end up with 70 - 80 degree water all over them.

    Time to call a professional before someone gets hurt.


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    #4
    Bummer1234
    Registered Users Posts: 1,843 ✭✭✭Bummer1234


    Would there be a lot of hard water in the area your father in law is?


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    #5
    Swampy
    Registered Users Posts: 2,104 ✭✭✭Swampy


    Bummer1234 wrote: »
    Would there be a lot of hard water in the area your father in law is?

    No. Not really an issue here.


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    #6
    Sleeper12
    Registered Users Posts: 16,987 ✭✭✭✭Sleeper12


    Pete67 wrote:
    Probably hot and cold supply to the mixer reversed when replacing the pump. First port of call would be to get the installer back to sort it out.


    +1


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    #7
    Swampy
    Registered Users Posts: 2,104 ✭✭✭Swampy


    Hi guys,

    Upon further inspection it seems that someone had originally colour coded the pipes so it defo looks like the feeds to the shower are reversed. The installer is being called back. Thank you for your help.


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    #8
    Sleeper12
    Registered Users Posts: 16,987 ✭✭✭✭Sleeper12


    You'd get away with this with a manual shower. Hot would be cold and cold hot. Thermostatic showers are a different kettle of fish though. They can't regulate the temperature if pipes are reversed


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