Discover the reasons behind the Growatt 425 AFCI self-test failure and how to fix it.
Common causes include wiring issues, faulty components, or incorrect settings. It's essential to check connections and settings thoroughly.
To reset your Growatt inverter, turn off the main power supply, wait for a few minutes, and then turn it back on. This can help resolve minor issues.
The AFCI self-test failure indicates that the inverter has detected a potential safety hazard within the array or its wiring. This can occur due to insufficient insulation resistance (RISO), which is critical for preventing ground faults. The inverter continuously monitors for ground faults, and if it detects a resistance below acceptable levels, it will trigger a fault to ensure safety. Furthermore, the AFCI function is designed to detect arc faults, which can lead to fire hazards. If the inverter's internal sensing circuits detect anomalies beyond set parameters, it will automatically shut down to prevent damage or unsafe conditions.
Users may observe the inverter displaying a fault LED pattern, typically blinking red or amber, indicating a failure during the AFCI self-test. Additionally, monitoring apps may report production drops or error messages related to AFCI functionality.
Always ensure that a licensed electrician or certified solar installer performs any troubleshooting or repairs on the inverter or associated electrical systems.
To prevent future AFCI self-test failures, ensure regular maintenance checks are conducted on the array and inverter. Inspect all wiring for wear and tear, and ensure that connections are secure and moisture-free. Regularly update the inverter firmware and monitoring settings to align with manufacturer recommendations.