Start up sprinklers; all zones open and won't close

I turned on my sprinkler system for the first time, and water is flowing through all the sprinkler heads and zones when the pipes are open. I tried cycling through my five zones to get the sprinkler heads to close, but none of the or valves closed so water kept flowing to all the sprinkler heads. I have a Generation 1, and there is no change to the system from last year.

@maltesefalcon09 - are the bleed screws open on all the solenoid valves from the winter/shutdown procedures?