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Rain Bird ESP-6TM Frozen Display "Er -- --": Power Cycle and Battery Removal

Symptom: Display Frozen on Error Message

After resolving a prior short circuit error, the controller now shows "Er -- --" and is unresponsive.

Reset Procedure

Remove backup battery.
Disconnect AC power for 1 minute.
Reconnect power (battery still out).
Observe if controller boots normally.

If Problem Persists

A valve solenoid or field wire may still be shorting the controller. Repeat the "Err + zone number" diagnosis: clear error, run zones manually one by one to identify the faulty zone.

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