I have a new 8.5kW mains fed electric shower (Triton T80z) which is cold in the morning but warm in the evening.
It has a low pressure indicator light on it so I know it's not a pressure problem (unless the light is broken...).
Anyone have any ideas on how to remediate this?
EDIT: Thanks DDS, some great info and options there. In the morning it doesn't heat the water at all so it comes out at mains temperature. I've fiddled with the settings (both elements on, max temp set etc) but with no difference made.. any ideas on why it'd do that?