Learn how to troubleshoot and resolve SolarEdge Error Code 18xBC related to AC voltage high issues.
Error Code 18xBC indicates that the AC voltage on L2 is too high, which can affect system performance. It's important to address this issue promptly to ensure optimal operation.
You can check AC voltage levels using a multimeter or by accessing the inverter's monitoring system. Ensure that the readings are within the specified range to avoid errors.
The SolarEdge inverter employs various protection mechanisms to ensure safe operation. The 18xBC error indicates that the AC voltage on Line 2 has exceeded the inverter's maximum allowable threshold. This fault can be triggered by the inverter's internal monitoring systems, which continuously measure the output voltage against predefined limits. If the measured voltage deviates significantly from the expected range, the inverter will halt operation to protect its internal components and maintain safety standards. This can involve checking the AC voltage levels, ensuring proper grounding, and monitoring grid frequency limits.
Homeowners may notice the inverter's LED indicator flashing in a specific pattern associated with the 18xBC error. The monitoring app will display an alert indicating high AC voltage on Line 2 (L2). Additionally, there may be a noticeable drop in energy production, as the inverter may enter a protective shutdown mode to prevent damage.
Always consult a licensed electrician or certified solar installer when performing maintenance or troubleshooting on solar inverter systems to ensure compliance with safety standards and regulations.
To prevent future occurrences of the 18xBC error, regularly inspect and maintain all electrical connections and components of the solar system. Ensure that the inverter's firmware is up-to-date and that grid settings are correctly configured. Installing surge protection devices can also mitigate the risk of voltage spikes from external sources. Additionally, engage in routine system monitoring to promptly identify and address any anomalies.