Rain Bird ESP-LX Running All Zones Simultaneously: Programming and Valve Fixes

ESP-LX Activates Nearly Every Zone at Once

When a Rain Bird ESP‑LX runs all zones together even when a single zone is selected, the cause is usually programming overlap or stuck‑open valves.

Ensure only one program (e.g., Program A) has start times and run times. Delete any overlapping start times in Programs B and C.

Manually open one valve at the valve box (turn the solenoid ¼ turn or use the bleed screw).
If all zones activate, the solenoids are not closing—clean or replace them.
If only the intended zone runs, the controller programming is at fault.

Valve cleaning/rebuild instructions are available at irrigationtutorials.com.

Irrigation: Zone 3 Runs With All Others: Wiring Cross or Pump Start Wire Fault; Hunter XC Controller Stuck on “OFF” – Rain Sensor Bypass; One Sprinkler Zone Runs With All Others: Master Valve or Wiring Fault?; Zones Come On Together – Short in Controller or Field Wires; All Sprinkler Zones Run Simultaneously: Controller or Valve Fault?; Hardie RainDial: All Zones Flash "Off" and Won't Run; New Drip Zone Valve Stuck On: Debris from Installation; Two Zones Run Simultaneously: Diagnosing the Cause; Toro Vision 1: All 7 Zones On Simultaneously—Controller Failure; Zone 1 Heads Don't Pop Up: Valve Flow Control or Diaphragm

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