If your controller shows irrigation running (Flashing Sprinkler Icon), and your sprinklers are not working, you may have a wiring problem at the valves or the irrigation water supply has been shut down.
If you have a master valve on your system (check for wire on the P/MV terminal), then your master valve may not be opening up. Check the wiring connections at the master valves for loose or corroded connections, or a bad solenoid.