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Hunter EC400 Garbled Display: LCD or Microprocessor Failure — Replace Controller

Display Shows Wrong, Upside-Down, Backward Numbers

9V battery replaced, hard reset done. No fix.

Cause

LCD screen or microprocessor failed. Controller not repairable.

Replacement

Irritrol Rain Dial — higher quality, repairable (panel swaps), easy programming. Compatible with existing wiring. Label wires, ensure 110V power off during swap.

Irrigation: Hunter Pro-C Shows Running But No Water: Test Controller Voltage Output; Hunter SRC Plus Two Zones Not Working: Electrical Troubleshooting; Hunter EC Controller Stations 1&2 Not Working: Power Surge Damage; Hunter SRC Plus Unreliable After 6 Years: Replace Controller; Hunter SRC "No AC" Display—Power Supply Issue; Hunter Controller Zone Running Too Long: Programming Error or Hardware Failure?; Hunter EC 'NO AC' Error After Siding Work: Transformer or Controller Fault?; Recurring Hunter XC Controller Failures: Wiring Short or Solenoid Issue?; Hunter XC Controller No Display After Power Outage: Reset and Power Checks; Hunter Control Won't Start Well Pump – Check Pump Start Relay Circuit

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