boiling water only
Sounds like something has gone wrong with the knobs and it is not adjusting the temperature control in side the shower.
Switch off the power to the shower and remove the front cover (the knobs just pull off ) if the knobs are damaged or broken then they will have to be replaced.
http://www.showerdoc.com/shower-spares/mira/power-showers/mira-916-46-knob-set--mira-event-t-916-46
If not have a look and see if you can see if anything else is misplaced or out of line.
Answered 11 years ago by The Shower Doctor
View Spares and Order Parts:
Mira Event (Thermostatic) - post 1996 Shower Spares
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 Event (Thermostatic) - post 1996 - Shower Spares
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 Power Showers 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 Power Showers
For any other support request please get in touch.