Learn about SolarEdge Error Code 18x7B indicatesting a ground fault and how to resolve it.
Error Code 18x7B indicates a ground fault detected in the system. This can lead to safety issues and requires immediate attention.
To troubleshoot, check all wiring connections for damage or moisture. Ensure that the inverter is properly grounded and inspect the system for any signs of wear.
The 18x7B error indicates that the inverter has detected a ground fault condition, which occurs when there is unintended current leakage to the ground. This can happen due to insulation failure or moisture intrusion affecting the system's wiring or components. The inverter continuously monitors the insulation resistance (RISO) of the DC circuits. If the measured resistance falls below a predetermined threshold, the inverter will trigger this fault to protect both the system and the utility grid from potential hazards.
Upon encountering the SolarEdge error code 18x7B, users may observe the inverter's LED indicator flashing a specific pattern indicating a ground fault. Additionally, monitoring apps will display alerts regarding the fault, and there may be a noticeable drop in energy production from the solar array.
Always consult a licensed electrician or certified solar installer when addressing electrical issues to ensure safety and compliance with local codes.
To prevent future occurrences of the 18x7B error, ensure regular maintenance of the solar array, including routine inspections of wiring insulation, junction boxes, and module integrity. Implement weatherproofing measures for all electrical connections and maintain proper grounding practices. Regularly monitor system performance through the inverter's monitoring app to catch any anomalies early.