Hi

I have a Gainsborough 850 Electric Shower and it wasn't turning on. I opened the front panel and checked the electric supply, which was fine. I pressed the dial (the gear-type rotating dial) and the thing turned on and gave very hot water. The thing is, the dial on the front panel is not pressable, so I am assuming this was some type of bypass. AND the dial inside refuses to turn with reasonable force. Should I use brute force to try and turn it? Is something else holding it in place? Can anyone give me a 'how-it-works' as far as the rotary dial setting is concerned. Thanks

Riz