Electric shower/ isolator switch problem

2 Jan 2014
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United Kingdom
I have a Mira Sport electric shower with an isolator switch situated outside the bathroom.

A few days ago after using the shower the isolator switch would not turn off and was stuck in the ‘on’ position with the red light showing. This problem persisted for the following days and whilst the shower continued to function correctly the isolator switch has remained stuck in the ‘on’ setting. However, yesterday the shower stopped working altogether mid shower. Following this I checked the isolator switch (which remains stuck in the ‘on’ setting) and the red light has started to flicker intermittently/ glow dimly.

Does anyone have any idea what the problem may be and how to resolve it?

Hope you can help!
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Sound like the mechanism is jammed. Is the isolator, ceiling or wall mounted?
Ceiling mounted ones can often get debris falling through the entry hole causing this problem, this could also be possible on a wall mounted one to.
I would suggest best way forward would be to replace it and seal any entry holes with silicon at the same time.
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switch is faulty, possibly a poor connection leading to overheating.

replace switch, and any damaged cable if necessary, and check other connections.

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