1) Check the ‘stations’ page and see if the ‘activate master’ flag is on for stations 6, 7, and 8. If these flags are unchecked, they will not activate the master valve.
2) You need to set the number of expansion boards (in your case, 1) in Options -> Exp. Board. If you don’t set this number, the controller assume there is no expansion board.
3) On the controller, clicking pushbutton B3 will change the display to expansion board 1 (E1).
I suggest that you take a look at the user manul to get familiar with the system first. Thanks:
http://rayshobby.net/?page_id=3775