Hi all, am desperate to find what what is wrong with my shower. I used to have a Mira Sprint shower which burnt out (so I was told) I have just installed a gainsborough 9.5 kw electric shower. But am still not getting any hot water. I did when it was first installed but nothing the very next day. The electrician did check the voltage supply which was 204 at the main supply downstairs and the same upstairs at the shower unit. I have a worchester boiler and it usually sits at 2 1/2 bars. What could it be??????????