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 Botanic Garden >> Gardening >  >> Question and Answer >> Irrigation

Rain Bird RC-7Bi Controller Replacement—DIY with ESP-4Mi + Module

Replace RC-7Bi (7 zones, discontinued). DIY or pro?

Recommended Parts

  • Rain Bird ESP-4Mi (4-station) ~$70
  • ESP-SM3 (3-station module) ~$27

DIY Steps

  1. Turn OFF breaker
  2. Label ALL wires by zone
  3. Disconnect power wires (black/white/green)
  4. Disconnect zone wires
  5. Disconnect COM (white)
  6. Mount new controller using template
  7. Reconnect: ground, neutral, hot
  8. Connect COM
  9. Install expansion module
  10. Connect zone wires per labels
  11. Connect rain sensor if present
  12. Turn ON breaker
  13. Program

Verdict

DIY-friendly. Straightforward wire-for-wire swap.

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