Mira sport max 10.8kw can not adjust temp on high setting and is too hot

Shower is 10 years old. It works fine on the low and med setting iie the temp increases and decreases when you adjust the temp dial accordingly but on the high setting the temp is a constant hot even when the dial is adjusted to cold. Any suggestion would be great. Many thanks. On the low and med setting the flow rate is not quite good enough for a decent shower, but the high setting does give you a better flow rate just too hot.
Asked 8 years ago by Jane
You may have a faulty flow valve that is not allowing the temperature to adjust. Or in the worst case the PCB may be faulty.

Answered 8 years ago by Anonymous

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