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  1. jonsmile

    jonsmile New Member


    My shower is now not getting cold. It goes from very hot to boiling hot.

    I expect I need to clean/ replace the cartridge. However I cannot work out how to remove the dial from the front of the shower.

    We have a "system-pool" Columbia shower cubicle.

    Pic of dial attached. There is no grub screw.

    Any idea on how to get cold water again/ removing the dial?

  2. ShaunCorbs

    ShaunCorbs S. Mod Trusted Plumber GSR Top Contributor!!

    I would say new cartridge

    And normally the end dome but either pulls off or screws off
    • Like Like x 1
  3. Darren Jackson

    Darren Jackson Plumber GSR

    As Shaun says above, but also make sure the inlet filters are clean. As this seriously reduces the operation of the shower if they are clogged up. The end domed cap should unscrew or pull off.
    • Like Like x 1
  4. townfanjon

    townfanjon Trusted Plumber GSR

    When you say shower cubical, do you mean the pod type ones ( sorry thats what I call them )
  5. jonsmile

    jonsmile New Member

    yes I mean the pod ones - it is from 1999 and has the steam and jets in it as well as a shower.
    I have managed to unscrew the end dome - thanks to both for the advice - i did not even realise that it was screwable!

    Have now hopefully cleaned up the cartridge - soaked it in descaler. If this does not work, I will hunt for a new cartridge. Any idea where in UK I can get one of these?
  6. ShaunCorbs

    ShaunCorbs S. Mod Trusted Plumber GSR Top Contributor!!

    @rpm@rpm uou posted a cracker of a link for spares

    Also you can try shower doctor
    • Agree Agree x 1
  7. Matchless.plumb

    Matchless.plumb Trusted Plumber GSR

    Definitely shower doctors they are specialised with shower cartridges.
  8. townfanjon

    townfanjon Trusted Plumber GSR

    I have hunted all over for the valves / cartridges etc for these , ne er been lucky , good luck , you will need it
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