Rain Bird ESP Modular Indoor: Zones 1‑2 (Rotors) Don’t Run – Loose Common Wire

Zones 4‑5 (sprays) work; rotors don’t. Small white wire from sensor wiring unconnected inside panel.

Connect that loose white wire to the C (common) terminal. The rotors likely share a common wire that was disconnected.

Irrigation: Rain Bird ESP-12LX: Schedule One Zone Weekly, Others by Custom Days; Wiring a Rain Bird SST Smart Series to Replace an RC‑7BI; Rain Bird ESP Modular: Display Works But No Zones Activate; Rain Bird ESP Modular Rain Sensor Won’t Reset – Moisture Still Present; Rain Bird ESP Modular: Battery Drains Daily — Replace Controller; Rain Bird ESP-LX Modular Raster Test Shows Open Circuits on MV, Valves 2 & 4; Solenoid Current Testing: Understanding Common Wire Readings; Rain Bird ESP Modular: Double Cycling & Seasonal Adjust Lock; Rain Bird ESP-6 "ERR" on Zone 3: Wiring or Solenoid; Rain Bird ESP Dead After Winter: Power Cycle and Wire Check

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