Mira Supreme 8.4

I have a Mira Supreme shower that is over 20 years old but has had very little use in that time.

When the shower is operated at any of the heat settings the water gets very hot sounding like it is boiling, it then goes cold for a while until it decides to heat again and so the cycle continues.

Can you suggest what might be causing the problem?
Asked 11 years ago by Anonymous

I think you may have a faulty Thermal Cut Out

A faulty TCO will have no continuity across the two terminals (The black thing on top of the heating tank)

Therefore a good TCO will have power at both connections and a faulty TCO will have power at only one.

(The function of the TCO is, if the water over heats it cuts the power off to the elements)

See Video.

http://www.youtube.com/user/showerdoc#p/u/2/_zi8JbEMYMs

Answered 11 years ago by Anonymous

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