While you wait for answers, we may have found some information which could help you.
Click here for Replacing Gainsborough Showerwhat KW is my Gainsborough ps1200 power shower as I need to replace it? Any?
gainsborough sv 800?
Gainsborough 9.5 on/off switch repair?
Gainsborough Impulse 9.5 electric shower?
Gainsborough 2000x leaking from bottom of copper cylinder ?
How do I remove the hose from my Gainsborough Energy 2000 shower?