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Rain Bird ESP-4SI: Controller Runs But No Water, Breaker Trips

New Home, ESP-4SI Worked Day 1 Then Failed: Pump or Wiring Fault

Controller shows zones advancing but no water. Breaker trips. Three possible causes:

1. Water Supply Shut Off

Check main irrigation valve at backflow preventer or pump discharge.

2. Cut Common Wire

All zones dead = common wire severed between controller and valves.

3. Pump/Relay Issue (Breaker Tripping Points Here)

If you have a pump, the pump start relay or pump motor may be shorted.
Breaker tripping = high current draw on 120/240V circuit.

Diagnose

1. Does the pump run when controller activates Zone 1? 2. If pump hums but doesn't start → bad capacitor or motor. 3. If pump runs but no pressure → suction leak, clogged intake, or broken impeller.

Need more info: Pump model, well vs. lake, relay type. Reply with details.

Irrigation: Rain Bird ESP "SKIP" on Zones 8–10: Need Controller Model to Diagnose; Rain Bird ESP‑6: No 110 V Power at Controller – Transformer or Wiring Issue?; Rain Bird ESP‑8SI “PR OFF” Error – Power Supply Check; Replacing Rain Bird RC-1260Bi Mechanical Controller with Digital Model; Rain Bird 7RCBI Stops at Zone 1 – Discontinued, Replace with ESP; Rain Bird RC-1260BI Advance Motor Failure; Rain Bird SST with Hydrotek 4000: Need Pump Relay & Delay; Rain Bird SST-400i Not Watering After Seasonal Shutdown; Rain Bird RC-7A Station Wheel Stopped: Motor or Switch Failed; Rain Bird ESP-6 Shows "8888": Controller Likely Dead, Replace with ESP-Modular

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