Learn about Huawei Error Code 2002, its meaning, causes, and solutions for DC arc faults in PV strings.
Huawei Error Code 2002 indicates a DC arc fault detected in the PV strings, which can pose safety risks. It is essential to address this issue promptly to ensure system safety and performance.
To troubleshoot a DC arc fault, inspect the PV strings for damaged wiring or connections. Ensure all components are securely connected and check for any signs of wear or overheating.
The Huawei inverter triggers the 2002 fault code when it detects a potential arc fault within the DC circuit of the solar array. This detection is based on the inverter's internal algorithms, which continually monitor the insulation resistance (RISO) of the system. An arc fault can occur due to compromised insulation, which creates a short circuit that can lead to overheating and fire hazards. The inverter is designed to detect these anomalies and shut down to prevent damage to the system and ensure safety.
The inverter displays error 2002 on its screen or monitoring app, indicating a DC arc fault detected in the PV strings. Users may observe LED indicators flashing in a specific pattern, and there may be a noticeable drop in energy production, with the inverter failing to convert solar energy effectively.
Always consult a licensed electrician or certified solar installer for troubleshooting and repairs to ensure compliance with safety standards and the National Electrical Code.
To avoid future occurrences of the 2002 fault code, ensure regular maintenance of the solar system, including periodic inspections of wiring and connections, testing insulation resistance annually, and keeping the system area free from debris and pests. Implementing proper string configurations and ensuring that all components are rated for the system's voltage can also mitigate risks.