Thanks for the quick reply!
OK, Given the thing costs about 80 quid, do you think it's worth trying to get that serviced? Or just get a plumber to fit a new one .... I suppose the same brand is a good idea given I know the pipe work positioning is right for it, but I think it's fairly crap...
Hello,
I have a Tristan Joy 8.5 kW electric shower.
Cold tap flow rate 12 litres/min.. So mains feed absolutely fine
Shower flow rate 4.2 litres/min (with heater fully off)
When I set the shower to normal heat (setting 2) then even on fully cold, it heats to 55+ degrees, IE completely...