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Rain Bird ESP-6 Won’t Start: Controller Reset Fix

Controller shows “XX” (fault code), system won’t run. One head was replaced but issue persists.

Reset Steps

Disconnect AC power.
Remove backup battery (if present).
Wait 3 minutes.
Reconnect power, then battery.
Reprogram schedule.

Also verify all valve wires are tight on the controller terminals. A sprinkler head fault doesn’t stop the controller; the “XX” usually indicates a shorted solenoid or wiring fault that the reset may clear.

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