Triton T80xr shower?

I resently replaced the solenoid control valve on my triton T80xr shower. Prior to this, and when it was working the temperature control switch was fine at around the 5 mark, and the water kept flowing for a few seconds after the shower was turned of to prevent the heating elements from burning out.
Now I have to run the shower with the controller at 9 or above, and the water shuts off immediately.