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Wiring Rain Bird ESP to Replace Hardie – Single Wire Per Zone

Old Hardie has one wire per zone; Rain Bird instructions show two wires per zone plus common.

Explanation

Each valve has two wires: a unique hot and a shared common. The Hardie’s “C” terminal is the common. Label each wire (1,2,… and C) and connect to same numbers on Rain Bird.

Irrigation: Hardie 2" Valve Solenoid Replacement: Irritrol Parts Compatibility; Hardie HR6200 Shows “A1” but Station 1 Won’t Run; Wiring a Rain Bird SST Smart Series to Replace an RC‑7BI; Rain Bird ESP Modular Indoor: Zones 1‑2 (Rotors) Don’t Run – Loose Common Wire; Rain Bird ESP‑6 Blows Fuse Immediately – Short in Wiring or Solenoid; Sourcing Hardie Valve Diaphragms in Sacramento: Replace Diaphragm and Solenoid Together; Rewiring a Hardie RD-900 Without a Diagram; Adding a Wireless Rain Sensor to Hardie HHA 11272 Controller; Rain Bird E-9 Transformer Replacement: 3-Wire Old vs 2-Wire New; Hardie 4000 Controller: Unconnected Blue Wire Mystery

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