This question is regarding Mira Sport - post 2006 - Shower Spares

Sport 9.0 Cold Water

My Mira Sport 9.0 has just started giving only cold water unless I turn it up to max heat on high when I get very hot water. As soon as I move it down to a lower temperature it turns to just cold water again.



When it first started happening I turned it off and then back on and it worked fine until it was switched off. Today it is just cold water as described above.



So you think this is likely to be the TCO or the heating tank (element) or something else please??
Asked 12 years ago by Anonymous

If you have any heat at all then it is not the TCO no heat then check the TCO.

 

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

 

If the TCO is OK then check the elements.

 

It may be a faulty element in the heating tank (there are two, three in most 10kw showers) you can check them with a multi meter you should have a reading of around 12>18 ohms.

If you have power to the elements and no heat it's probably the elements, no power to the elements then it's probably a micro switch.

 

If you don’t have a multimeter  we sell them at £10 each with a guide on how to use them for checking and testing the various parts of your shower.

 

Apart from helping to fix your shower, they are really useful for checking you have a power supply to appliances, for checking fuses, letting you know much power you have left in batteries

(so you know if they are dud or not)  and lots of other jobs, in short they are well  worth the £10.

 

http://www.showerdoc.com/installation/electrical-products/SKYTRO-600-005-Digital-Multi-Tester

 

If they elements are OK then you are probably going to need a new flow valve

Answered 12 years ago by The Shower Doctor

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