While you wait for answers, we may have found some information which could help you.
Click here for Off Hot ColdGainsborough Impulse 9.5 electric shower?
Gainsborough 2000x shower?
Gainsborough 9.5 on/off switch repair?
How do I remove the hose from my Gainsborough Energy 2000 shower?
Gainsborough 2000x leaking from bottom of copper cylinder ?
Gainsborough Energy 2000x shower stopped working?