The water flowing from my electric shower is cold/too cool, what can I check?

Is electricity turned on to the unit? Check that the temperature control is set to the correct number for the time of year (you will need a higher number in the winter than in the summer). Check that the power selector (if available) is set to 'High'. On units fitted with a 'Low Pressure' indicator, check to see if it has been activated. If it has, then it is advisable to check for blockages in the inlet filter and/or have your mains water pressure checked. On units not fitted with a 'Low Pressure' indicator, pressure could still be the problem, so it is advisable to have this checked prior to an engineer call-out. Check that the front cover has been fitted correctly with no distortion to the backplate.