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triple control thermostatic mixer 3 yr old cold water only

Discussion in 'Plumbing and Central Heating' started by loafer, 23 Aug 2012.

  1. loafer


    16 Feb 2006
    Thanks Received:
    United Kingdom

    one of these as listed on link above
    installed 3 years ago (rotherham) medium water hardness
    now only gives cold water!
    presume that cartridge has been adversely affected by scale build up.?? no scale inhibitor/reducer fitted on either cw/dhw system.

    If this is likely.... how easy is it to remove the cartridge to descale and or replace?

    I have removed the cover plate heads and handles but given that the access around the tile cut-out is severely restricted, can anyone recommend or suggest a "plan of attack"

    I can just about get access to the cw and dhw entry points as the are on flexi braided hoses. I can cap these off whilst work is ongoing and double check that the issue is not a failure on dhw supply. Issue is removing and descaling cartridge (vinegar!?) or getting a new 1???

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