Rain Bird ESP-LX: Station 1 Sticks On, Manual Override Fails

Station 1 runs 30+ minutes, won't stop from controller. Manual operation of any station fails. No errors, factory reset didn't help.

Isolate Valve vs. Controller

1. Disconnect all power to controller. Turn water on. If station 1 still runs, valve is stuck (solenoid, debris, diaphragm).
2. If valve shuts off with power off, controller is the issue.

Testing Controller Output

Use multimeter: black on C (common), red on station terminal. Should read 22–26 VAC when station runs. No output = bad controller. A bad solenoid usually affects only its zone, not all stations.