Gainsborough 8.5kw shower overheat light stays on? Help, advice and problem solutions on all aspects of home appliances from washing machines to TV's

[leehawkins1966]

Hello
My neighbour has fitted a Gainsborough 8.5kw shower, shower works all ok, but the overheat light stays on, shower seems to be working all ok, the low flow light goes out as it should

I did notice he fitted a standard inline shut off valve right up near the shower inlet , could this be why the overheat light is staying on?

Thanks
lee