Learn about the GoodWe Isolation Failure message and how to troubleshoot it effectively.
The Isolation Failure message indicates a potential issue with the inverter's isolation resistance. This could lead to safety concerns and requires immediate attention.
To resolve the Isolation Failure, check the wiring and connections for any faults. Ensure that the inverter is properly grounded and consult the manual for specific troubleshooting steps.
The Isolation Failure is triggered by the inverter's internal monitoring system that performs regular insulation resistance (RISO) measurements. This measurement checks for potential ground faults by assessing the resistance between the array's conductors and the ground. If the resistance falls below a predetermined threshold (commonly 1 MΩ), the inverter interprets this as a risk of electric shock or equipment damage, prompting a shutdown to protect both the system and personnel. Ground Fault Detection is a critical safety feature that ensures the system remains safe under fault conditions, preventing hazardous situations.
When experiencing an Isolation Failure with a GoodWe inverter, users typically observe a red LED indicator illuminated, signaling a fault. Additionally, the monitoring app may display alerts regarding reduced production or system shutdown. Users may notice a significant drop in energy output, indicating that the inverter has ceased operation due to safety protocols.
Always consult a licensed electrician or certified solar installer when performing maintenance or troubleshooting on solar systems to ensure safety and compliance with local codes.
To avoid future isolation failures, regularly inspect the solar array and wiring for signs of wear or damage, particularly after severe weather events. Ensure all connections are sealed and rated for outdoor use, and consider using higher quality cables with better insulation properties. Additionally, implementing routine maintenance checks can help identify issues before they lead to system shutdowns.