Mira spint 7 years old

Hi We have the above shower fitted The last two days it’s not heating the water up on any settings Power to the unit Is good Wolhst would you recommend to replace first ? Thermal switch? Thanks in advance
Asked 5 years ago by Dean
Check the head and the hose are clear, and if so, 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

After fitting a new TCO

When fitting a new TCO listen to the shower, after it has completed its first on/off cycle, if when it is switched off you hear it continuing to heat (Noise like a kettle starting to boil) this will mean that there is a switch or a relay that is stuck in the on position, this is keeping an element energised and this is probably what caused the original TCO to fail.

If this is the case replace the faulty switch or relay and make sure that you switch the shower off at the isolating switch when the shower is not in use because this may cause the new TCO to fail.

Answered 5 years ago by Barrie Seabright

View Product and Order Online:

Do you need any additional help to find the correct spare part?

Please click the following link if you would like to see other answers or ask a question regarding the Mira Azora/Sprint/Sport/Zest Thermal Cut-out (TCO) - 416.41

If you've landed here and this question is not about your specific product, please take a look at these similar items on our Mira Thermal Cut Outs Spares page. Alternatively, if you're looking for any other brands you should view our full range of Shower Spares.

If you do not want to proceed with a repair or you want to buy this item or similar, please consider one of our Replacement Mira Thermal Cut Outs

For any other support request please get in touch.