Charger intermittently locks up – LEDs frozen, no response to button presses, must be power-cycled to recover.

Note: Repeated lockups indicate a need for firmware or hardware service.

• Record pattern: Note when lockups occur (e.g., at start of charge, during Wi-Fi reconnect) to help diagnostics.
• Firmware update: Use the Enphase app to check for and install the latest firmware.
• Improve environment: Ensure adequate ventilation and that the charger is not installed near strong EMI sources.
• Power quality: Have an electrician check for severe voltage fluctuations or harmonics on the supply.
• If lockups continue: The control board may have a hardware fault and should be replaced.