Learn about Sungrow Error Code 022, its causes, and how to resolve high leakage current issues after rain.
Error Code 022 indicates that the leakage current is too high, which can pose safety risks. This often occurs after rain due to moisture affecting the system.
To troubleshoot Error Code 022, inspect the inverter for moisture ingress and check all connections for water damage. Ensure the system is dry and functioning properly.
Error 022 indicates that the leakage current detected by the inverter is above acceptable limits, often triggered by high humidity or water ingress after rainfall. The inverter continuously monitors insulation resistance (RISO) to ensure safety and operational integrity. When moisture affects the insulation of the DC circuits, it can lead to ground faults, increasing leakage current. The inverter's protective mechanisms interpret this as a potential hazard, thus triggering the fault code to prevent damage or safety risks.
Upon encountering Error 022, users may notice the inverter's LED indicator flashing an error pattern, and monitoring apps may display alerts indicating a fault. Additionally, there may be a significant drop in energy production, often accompanied by a system shutdown due to safety protocols.
Always consult a licensed electrician or certified solar installer when diagnosing or repairing solar system faults to ensure compliance with safety standards and regulations.
To prevent this issue in the future, ensure that all electrical connections are properly sealed and that junction boxes are rated for outdoor use. Regular maintenance checks should include inspecting insulation integrity and grounding connections. Additionally, keeping the array free of debris can help mitigate moisture retention.