This question is regarding Mira 415 - post 1993 - Shower Spares

Varying output temperature

The output water temperature from our Mira 415 oscillates, although the incoming temp from the combination boiler appears stable (temp output at taps is stable). Would the thermostatic 'element' of the unit be cusing this? If so which replacement part do I need to order? Thanks Paul
Asked 13 years ago by Paul

Hi Paul

The 415 doesn’t have thermostat, the things that can alter the temperature is fluctuating pressure or fluctuating temperature of the water coming from the boiler.

Regarding the pressure make sure that no one is flushing the toilet or a washing machine is coming on when using the shower.

Regarding the temperature fluctuation it could be a faulty cartridge however to check this, see if you can get hold of the hot supply pipe before it enters the shower or perhaps as it leaves the boiler.

If when holding this pipe the temperature fluctuates then the problem is not with the shower but more likely with the boiler as the shower can only deliver what the boiler sends to it.

Answered 13 years ago by The Shower Doctor

View Spares and Order Parts:

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 415 - post 1993 - 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 Concealed Shower Valves 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 Concealed Shower Valves

For any other support request please get in touch.