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Mira thermastatic shower problem,pressure&temprature.

I have a mira thermastatic mixer shower installed 2 years ago along with a new combination boiler,the showers been going fine until lately when its started going hot then cold(without any other appliance on&no other taps running)the pressure goes up&down to for no apparent reason.the pressure(bar)on my combi is set at 1,ive put up up to as high as 2 to see if that would make a difference but problem still persists!it was an expensive shower so i would appreciate any assistance!cheers.

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  • bov1873 Mar 07, 2009

    the water were i live in scotland is not hard would i take the mixing valve apart?

  • bov1873 Mar 18, 2009

    got mira plumber out and the cold feed into the shower is blocked somewhere in the main pipe so awaiting plumber to clear the pipe.

  • bov1873 Jun 14, 2009

    cut into your hot&cold taps at your bath with t joins and take the feed for them for your mixer shower!just blank off the old shower pipe.its very easy to do especially with flexi pipes and push cant go far wrong.

  • bov1873 Jun 14, 2009

    cut into your hot&cold pipes going up to your bath taps & fit t pieces then take them up to your shower!very simple to do with flexi pipes and push fittings.a local plumbers merchants will keep you right!blank off the pipe going into your old shower as your supply will be coming from your bath pipes.take your time&enjoy it!

  • bov1873 Jun 14, 2009

    i would just cap that old shower pipe&take your feed from the hot&cold water pipes going into your bath!just cut into them and fit a t piece joint and take the pipes up to where your shower will be located.sounds hars but its easy with flexi fittings,push fittings etc.your local plumbers merchants will keep you right!


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You mixing valve may be going bad,do you have hard water? you may just need too take it apart and clean it

Posted on Mar 07, 2009

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