mira sprint 9.5 kw giving out cold water and buzzing.

hi.have a mira sprint 9.5 kw.only had for about 18mths,but is not giving out any hot water and a buzzing noise coming from the inside..i have took the outer casing off and turned the temp dial from cold to hot,the pressure decreases but does not heat up..also noticed when turning the temp dial with the casing off,that there is no movement of any type towards the two levers leading to the micro switches,is this a busted flow valve assembly..thank you
Asked 8 years ago by Roy
I think you may have a faulty Thermal Cut Out (TCO).

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 until the water cools, this can take up to 15mins)

See Video:

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

Answered 8 years ago by Anonymous

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