Learn why your Fronius Primo inverter triggers an Arc Fault after thunderstorms and how to resolve it.
An Arc Fault can occur due to damaged wiring or connections, especially after severe weather. It's crucial to inspect the system for any visible damage.
Regular maintenance and inspections can help prevent Arc Faults. Ensure all connections are secure and consider using arc fault detection technology.
The Fronius Primo inverter is equipped with advanced arc fault detection capabilities that monitor for unintended electrical discharges within the solar array. An arc fault can occur when there is a breakdown in insulation or a loose connection, causing an electrical arc that can lead to fire hazards. The inverter utilizes insulation resistance measurements (RISO) to detect these anomalies. Following a heavy storm, moisture can compromise insulation or create conductive paths, triggering this fault. Furthermore, the inverter may engage ground fault detection protocols, which assess for any unintended current leakage, leading to an automatic shutdown to ensure safety.
After a heavy thunderstorm, the Fronius Primo inverter may display an arc fault error code on the LED indicators, typically accompanied by a red light. Users may also notice a drop in energy production on their monitoring app, indicating that the inverter has halted operation due to the detected fault. Additionally, the inverter may emit audible alerts or notifications regarding the arc fault condition.
Always consult a licensed electrician or certified solar installer when dealing with electrical components to ensure safety and compliance with local codes.
To avoid future arc fault occurrences, ensure that all electrical connections are weatherproofed and that junction boxes are sealed against moisture. Regularly inspect wiring and connectors for wear or damage, particularly after severe weather. Implement surge protection devices to mitigate the impact of lightning strikes and consider periodic maintenance checks by a certified solar installer to ensure system integrity.