Hunter i-Core "Station Overflow" Error: Finding the Leak

The Hunter i-Core displays "Station Overflow" on a zone. This advanced controller monitors flow rates and detects when a zone exceeds its programmed GPM threshold.

How Station Overflow Detection Works

The controller learns or is programmed with each zone's expected flow rate (e.g., Zone 4: 10 heads × 1 GPM = 10 GPM). If a broken head or cracked pipe increases flow to 15 GPM, the controller flags "Station Overflow" for that zone.

Troubleshooting Steps

1. Identify the flagged zone from the controller display
2. Manually run that zone and visually inspect every head and pipe run
3. Look for: broken sprinkler heads, cracked lateral lines, blown fittings, stuck-open valves
4. Repair the leak
5. Reset the alert - controller should clear once flow normalizes

If No Visible Leak

• Check for underground pipe breaks (soggy areas, greener grass patches)
• Verify the zone's programmed GPM setting matches actual head count/nozzle specs
• Ensure flow sensor (if installed) is functioning and calibrated

The i-Core manual provides detailed flow setup procedures. Download from Hunter's website if needed.