at the minute mine is also messing about like this, i have been sent a new 'phased shut down relay' but this is not the problem, i have started taking it apart and testing things and so far (but not 100%) it is looking like the micro switch that turns the element on. i have put my multi meter on it and it will not switch on. i will remove the shower and further examine it and let u know in a day or two if this was the culprit.
robbie mcdowell
August 2010