thermostat
thanks
betty
Hi Betty
The 415 doesn’t have a thermostat if you have 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.
If you need a cartridge then here is the link
http://www.showerdoc.com/shower-spares/mira/MIRA-902-55-Cartridge-Assembly
George
Answered 13 years ago by The Shower Doctor
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Mira 415 / 415 B - post 1985 Shower Spares
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