Model Aquatronic 4 Shower. When I switch off the power on the shower unit it still runs cold water, (albeit a trickle) when it should stop within seconds. How can I repair this ? as i do not have a manual as I have recently moved into the house. Is it a electrical problem or has a valve stuck partially open due to scaling? If so how can I repair it?

Norman Howden, November 2006

baisically you need to let the cold water run for about 2 mins each time you use the shower. This should stop all th excess water coming out after the shower unit is turned off.

Ac, November 2006