This question is regarding Mira 723 - Shower Spares

Mira 723 biv

I think it's a low pressure model but now connected to a combi. Worked ok until recently. Now when you turn it on it becomes hot ish then immediately cools down and stays cool. It does not heat up again and the temperature control has no effect whatsoever
Asked 8 years ago by Peter
Regarding the temperature fluctuation or cool running, it could be a faulty cartridge. However to check this if you have the shower fed from a combi boiler, see if you can get hold of the hot supply pipe before it enters the shower or perhaps as it leaves the boiler.


If when holding this pipe the temperature fluctuates or goes cool, then the problem is not with the shower but more likely with the boiler, as the shower can only deliver what the boiler sends to it.

Disregard the temperature at the taps as they have a different flow rate.

If the inlet is hot and the valve has worked before then I would try fitting a service kit first as this is much cheaper than a combi cartridge ultimately you may have to fit a HP cartridge or change the shower to a combi compatible unit

Answered 8 years ago by Anonymous

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