Low pressure light no water

It may be your solenoid valve, you can check it if you have a multi meter, you should have a reading of at least k3.5 ohms, across the two terminals any less and you need a new valve. (Check the valve in the failed state.) (When it is not working!)

If there is power getting to the solenoid and it is not operating then there is a good chance that you have a faulty solenoid.

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

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

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

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

The replacement is fairly straight forward.

Turn of the water and power you then have to dismantle most of the inside of the shower to get enough space to slip the old part out and the new part in.

This sounds more difficult than it actually is, however you do have to be methodical noting where screws/nuts etc. come from and what goes where and it is always a good idea to take photos as you go because you can refer to them when you are rebuilding.