Learn about Fronius Error Code 103, its causes, and how to fix low grid frequency issues.
Error Code 103 indicates that the grid frequency is too low for the inverter to operate safely. This can lead to performance issues or shutdowns.
To troubleshoot low grid frequency, check the local grid conditions and ensure that your inverter settings are correctly configured. Contact your utility provider if issues persist.
Fault 103 is specifically related to grid frequency being too low, which is a critical parameter for inverter operation. Inverters are designed to operate within a specific frequency range, typically between 59.3 Hz to 60.5 Hz. If the frequency drops below this threshold, the inverter will disconnect from the grid to protect both the system and the grid itself. This protection mechanism is in place to prevent potential damage to the inverter or other connected equipment and to maintain grid stability. The inverter continuously monitors the grid frequency, and when it detects a frequency below the allowable limit, it triggers the fault code and ceases operation.
When the Fronius Primo inverter triggers Fault 103, users may notice that the LED indicator displays a specific blinking pattern indicating an error. Additionally, the monitoring app may alert the user with a fault notification and production drops may be evident, reflecting reduced or zero energy output from the solar array.
Always consult a licensed electrician or certified solar installer for any electrical issues or troubleshooting beyond basic checks to ensure safety and compliance with local codes.
To prevent future occurrences of Fault 103, ensure regular maintenance of the inverter and its connections. Schedule firmware updates as recommended by the manufacturer and maintain clear communication with your utility provider regarding grid conditions. Additionally, consider installing a grid monitoring system to proactively detect and respond to frequency fluctuations.