Charger displays E301; app may show 'Overcurrent detected – charging stopped'.

Safety: Overcurrent can overheat wiring. Do not repeatedly restart charging without investigation.

• Check app current limit: Ensure the maximum current in the Enphase app does not exceed the circuit breaker rating and charger specification.
• Inspect connector and cable: Look for burn marks, melted plastic, or hot spots on the J1772 handle and cable. If any are found, discontinue use and replace the cable assembly.
• Try lower current: Temporarily reduce the maximum current setting in the app (e.g., from 40 A to 24 A) and see if charging completes without E301.
• Test with another vehicle: If E301 only occurs with one car, the vehicle's onboard charger may be malfunctioning and drawing excessive current.
• If E301 occurs at low currents or with multiple vehicles: The internal current sensor or power module may be faulty. A technician should measure output current and replace the power board if needed.