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Thermostatic shower fed via worcester combi 24i, going cold Brrrr!

Discussion in 'Plumbing and Central Heating' started by ottosump, 15 May 2017.

  1. ottosump

    ottosump

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    Hi group, my Mother has a thermostatic bar mixer shower valve fitted, the hot water is supplied by a worcester combi 24i. The shower works fine, then it goes cold, there is no pattern to it and it will become warm again on its own accord. Domestic hot water and the central heating appear to be working fine, this has been happening intermittently for about 3 weeks now. We live in a non HW area, are there any basic checks I can carry out before scopping the shower bar through me Mums bathroom window :eek:

    Kindest regards, Otto
     
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  3. ottosump

    ottosump

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  4. terryplumb

    terryplumb

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    hi Otto, before you throw the valve away make sure the hot water coming from hot taps runs at a consistent temperature for several minutes.if it does then the mixer needs attention.you can get replacement parts but I would not bother as you can buy a new one for around 60 quid. the distance apart of the pipework is a limiting factor. most are 150mm but some are not.most threads are 3/4 bsp.again some are not. if you establish what you have and match it on the replacement it's an easy swap. regards terry.
     
  5. terryplumb

    terryplumb

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    forgot to mention the hot and cold supplies have to be the same side. I.e hot goes into valve on left side on existing ,new has to be same.
     
  6. bernardgreen

    bernardgreen

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    When the shower water goes cold has the boiler shut down ?
     
  7. ottosump

    ottosump

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    Thanks for the replies guys. I'll check if boiler stays on when i visit later today and respond accordingly.
    Regards Otto
     
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