Yes itcould be the pilot/flow valve however before ordering I would check theelements, it is just possible that one of them has become faulty ....See below.
It maybe a faulty element in the heating tank (there are two, three in most 10kwshowers) you can check them with a multi meter you should have a reading ofaround 12>18 ohms.
If you have power to the elementsand no heat it's probably the elements, no power to the elements thenit's probably a micro switch.
This Video may help
If you don’t have amultimeter we sell them at around £10 each with a link to an on line guideon how to use them for checking and testing the various parts of your shower.
Apart from helping to fix yourshower, they are really useful for checking you have a power supply toappliances, for checking fuses, letting you know much power you have left inbatteries
(so you know if they are dud ornot) and lots of other jobs, in short they are well worth the £10.
Almost certainly not, this valve is for the older type Sports.
The 9.8 is a newer Sport however you will have to look here http://www.showerdoc.com/shower-spares/mira to establish which Sport you have alternatively you can send us a photo and we will ID it for you.
Yes it sounds like a faulty pilot valve
The pilot valve is a common fault
Turn off water and power
Put something in the waste just encase you drop a screw!
Remove splash plate at pipe entry
Remove 4 screws from 'U' clamps and 'U' clamps
Later models have “Torx” screws so you will need a “Torx” screwdriver with a T10 Bit.
Remove screw above letter 'A' on drawing
Ease pilot valve forward (if there is no movement on the pipe work you will have to disconnect it at the inlet connection take care to hold the brass body with pliers when slackening the nut)
Swap the wires over from one pilot valve to the other one by one
Turn on water and allow the water to come thru unit before switching on power.
Link to Pilot valve
Yes this should stop the water entering the unit
See below this may be of some help.
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