Mira Orbis 10.8kw shower stays cold all the time.

On the shower digital display it shows only 9 degrees or thereabouts all the time even though the temperature settings are set to full and the temperature dial is full on. It's normally 40+ degrees. Can't understand it because the shower worked perfect the last time it was used and has done since we bought it a couple of years ago. Any help would be greatly appreciated. Thanks.
Asked 7 years ago by Dam0
If the shower is heating up properly and it is just the display that is incorrect then it is likley that you need an outlet thermistor.

www.showerdoc.com/mira-orbis-thermistor-assembly-1647-108

If it is not heating up then it could be a faulty element in the heating tank a faulty Thermal Cut Out



See below for how to check these.



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.

www.youtube.com/watch?v=wzPt1hsfVq4


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 money.


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



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.

www.youtube.com/user/showerdoc#p/u/2/_zi8JbEMY

Answered 7 years ago by George Thomson

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