Even though I have decent pressure my Mira sport goes into over heat even on medium setting

Damian tune, August 2013

It may be that the flow is restricted by
shower head blocked with scale
Hose kinked or partially blocked
if the shower is old it may need to be descaled

Overheat is always caused by a reduced flow within the heater tank. Reduced flow will cause an excessive rise in the flow temperature.

Garry Knox, August 2013