When switched on shower works, i.e. pump appears to be working, but water gradually stops , switch off for few moments, switch on and it works again for a few minutes, any suggestions? Hold and cold water was shut off for about an hour a few days ago while radiator was fixed.
This is Mira Events thermostatic power shower fitted about 5 years ago.

G Brock, January 2010

Ive had continual problems over the years a bit like this on an older model. Design is flawed and by sounds of it Mira have never fixed it. When brushes on motor wear (quite quickly) for some reason it also affects the electronic pcb pack so speed control and therefore water flow gets erratic. Result - have to replace both the PCB and motor assy at about £110 for both.

willyjayb, June 2010

Sounds like an air lock in the system.

Homer, January 2010