how do I fix my aqualisa aquarian thermostatic surface mounted shower. It is six years old. when I turn off the water pressure control knob the pump in the hot press continues to run and water still comes out of the shower head under pressure and also out of the control unit itself.

Ollie Buckley, November 2008

I had a problem with our showere where the unit continued to run after it had been switched off or 'pulsed' from time to time of it's own accord. I turned off the power to the shower ( I could still use it as a normal shower) and then changed the micro swich that controls the power to the pump. A new one just fits right in. If your problem sounds similar it could be this. Aqualisa were very helpful in identifying this.

DIY, December 2008