Hi Tincup, thanks for the advice, it is working!!!!
Need a new head I guess.
The hours I spent on the net trying to find an answer, last night I ordered a new shower, need to take it back.
It is about five years old and when switched on will work for a few seconds and then cut out, no flashing lights, no solid light.
Sometimes it will work if you do a reset or stretch the shower pipe.
Any thoughts anyone, please?