Mira Sport - Wailing noise

I've got a Mira Sport shower, about 4 years old. Last year, it started making a wailing noise. If I turn the dial to hotter or colder, the wailing stops but the wailing happens at the just the position I want. Also, it doesn't seem to get as hot as it used to on the 'medium' button, so I usually have it on 'hot' these days. Any suggestions?
Asked 13 years ago by Anonymous
This is a fault in the flow valve, replacement can be ordered online by clicking on the link below.

http://www.showerdoc.com/shower-spares/mira/MIRA-1563-508-Mira-Flow-Valve-Assembly-10-8-Kw-1563-508

Answered 13 years ago by Anonymous

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