Erratic operation

Sir/Madam, I have a problem with my shower mixer since its installation several years ago which has worsened recently. Any time I request a higher temperature setting, the water goes cold for close to a minute before heating up again and there is no noticeable in the temperature from before. I would have to move to the highest setting where the water gets too hot and then move slowly toward a cooler setting until I get the required setting. Recently , however when I move the lever to the hot side the pump the hot water stops. Can you give me some clues as to what the problem might be.
Asked 6 years ago by Richard
You don't mention which shower you have.

However your description of the fault is typical of a shower that has been plumbed the wrong way round the correct way is hot to the left cold to the right, this is the first thing you should check.

Answered 6 years ago by George Thomson

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