While you wait for answers, we may have found some information which could help you.
Click here for Heat Gainsborough Watergainsborough sv 800?
Gainsborough 2000x leaking from bottom of copper cylinder ?
Gainsborough Impulse 9.5 electric shower?
How can I fix my Gainsborough ps1200 shower???
How do I remove the hose from my Gainsborough Energy 2000 shower?
Gainsborough Energy 2000x shower stopped working?