Solenoid Coil

It may be your solenoid valve has become faulty again, youcan check it if you have a multi meter, you should have a reading of at leastk3.5 ohms, across the two terminals any less and you need a new valve. (Checkthe valve in the failed state.) (When it has stopped working!)

If there is power getting to the solenoid and it is notoperating then there is a good chance that you have a faulty solenoid.

http://www.youtube.com/watch?v=NzJjzWqxesc

The videois intended as a guide and does not cover every shower.

If you don’t have a multimeter  we sell them  with a guide on how to use them for checkingand testing the various parts of your shower.

Apart from helping to fix your shower, they are reallyuseful for checking you have a power supply to appliances, for checking fusesand letting you know much power you have left in batteries

(So you will know if they are good or not) and lots of otherjobs, in short they are well worth a few pounds

http://www.showerdoc.com/installation/electrical-products/SKYTRO-600-005-Digital-Multi-Tester

Ifthe solenoid is faulty then have a close look at the flow stabiliser valve justabove it it is possible that there is a small leak from the valve dripping downon to the solenoid which will shorten the life span of the solenoid.