How to Reset and Reprogram a Hunter EC Controller After a Power Outage

Hunter EC Irrigation System Shows All Symbols but No Operation

After unplugging a Hunter EC controller to protect it from a storm, the display shows all symbols yet the system does not run. This usually means the programming was cleared or corrupted during the power loss.

Verify Programming

Ensure at least one program (A, B, or C) contains:

• A start time
• Watering days
• Station run times (watering duration)

Full Reset and Reprogram

1. Press and hold the −, Right Arrow, and PRG buttons simultaneously.
2. Press and release the RESET button in the lower wiring compartment.
3. Release the three buttons. The display should show 12:00 AM, indicating memory is cleared.
4. Re‑enter your desired schedule.

If the controller still fails to operate after a correct reset, the microprocessor may be damaged and the unit should be replaced.