Learn about the Solis AFCI-Selbsterkennung error and how to resolve it effectively.
The AFCI-Selbsterkennung error indicates that no arc has been detected in the DC circuit, which may suggest a fault in the system's detection capabilities.
To troubleshoot, check the DC connections for any loose wires or damage, and ensure the inverter settings are correctly configured.
The AFCI-Selbsterkennung error relates to the inverter's Arc Fault Circuit Interruption (AFCI) feature, which is designed to detect dangerous arc faults in the DC circuit. When the inverter's internal monitoring system detects irregularities in the electrical parameters—such as sudden voltage spikes or inconsistencies in current flow—it triggers this fault to prevent potential fire hazards. The inverter continuously performs insulation resistance measurements (RISO) and ground fault detection to ensure safe operation. If these parameters fall outside acceptable limits, the inverter will shut down to protect both the system and the property.
Homeowners may observe the inverter's LED indicator flashing a specific error pattern or a steady red light, indicating a fault condition. Additionally, the monitoring app may display alerts regarding the AFCI-Selbsterkennung error, accompanied by a noticeable drop in energy production, often below expected levels for the given solar conditions.
Always consult a licensed electrician or certified solar installer when diagnosing or repairing electrical systems to ensure compliance with safety standards and local codes.
To prevent future occurrences of the AFCI-Selbsterkennung error, ensure regular inspections of the entire solar array and inverter system. Check for signs of wear, moisture intrusion, or corrosion. Schedule routine maintenance with a certified solar installer to perform insulation resistance tests and verify connection integrity. Additionally, consider installing surge protection devices to mitigate external electrical interference.