As a solar panel owner, you understand the importance of a well-functioning solar inverter. The inverter is the heart of your solar system, converting the direct current (DC) power generated by your solar panels into alternating current (AC) power that can be used in your home. But what happens when your Fronius solar inverter starts showing error codes or stops working altogether?

Don’t worry, our team of Sydney solar repair experts are here to help. We’ve put together this comprehensive guide on Fronius solar inverter troubleshooting and error codes to help you identify and potentially fix common issues with your inverter.

Quick Summary

Fronius inverters display error codes to indicate specific issues. Understanding these codes can help you troubleshoot problems and maintain optimal performance of your solar system.

Understanding Fronius Solar Inverter Error Codes

Fronius inverters come equipped with a clear and easy-to-read display that shows various error codes when something goes wrong. These error codes are designed to help you pinpoint the exact issue with your inverter, making troubleshooting a much simpler task.

For instance, if your inverter displays an error code 102, it means there’s an issue with the AC grid frequency. On the other hand, an error code 567 indicates a problem with the DC/AC converter. By understanding these codes, you can take the necessary steps to rectify the problem or call for professional solar inverter repairs.

Common Fronius Solar Inverter Error Codes and Troubleshooting

Here are some of the most common Fronius solar inverter error codes and how to troubleshoot them:

  • Error Code 102: AC grid frequency is out of range. Check your grid connection and make sure it’s stable.
  • Error Code 567: DC/AC converter issue. This may require professional assistance.
  • Error Code 314: Insulation fault. Check the PV generator for insulation faults.
  • Error Code 443: No feed-in possible. Check the grid connection and the inverter settings.
  • Error Code 567: DC/AC converter error. This usually requires a solar inverter replacement.

Remember, if you’re unsure about any of these steps, it’s always best to call in a professional solar electrician.

When to Call a Professional

While understanding Fronius solar inverter error codes can help you troubleshoot minor issues, some problems may require professional intervention. If your inverter is continuously showing error codes, or if the same error code keeps reappearing, it’s time to call a professional.

Similarly, if you’ve followed the troubleshooting steps and the problem persists, don’t hesitate to reach out to a professional. Our team of solar panel repairs experts in Sydney are always ready to assist you.

Maintaining Your Fronius Solar Inverter

Regular maintenance is key to ensuring the longevity and optimal performance of your Fronius solar inverter. This includes regular solar panel cleaning, checking for error codes, and scheduling regular solar health checks in Sydney.

For more information on maintaining your solar system, check out our blog posts on solar inverter troubleshooting, troubleshooting solar panels, and why your electricity bill might be high with solar panels.


Understanding Fronius solar inverter error codes can help you troubleshoot common issues and ensure your solar system is working at its best. However, some issues may require professional help. If you’re experiencing persistent problems with your Fronius solar inverter, don’t hesitate to reach out to our team of solar repair specialists.

At Solar Repair Sydney, we’re committed to helping you get the most out of your solar system. Whether you need assistance with troubleshooting, regular maintenance, or a complete solar inverter replacement, we’ve got you covered. Contact us today for all your solar repair needs.


Save time and $$$ with a no obligation quote from solar specialists in Sydney. It takes just 30 seconds.
Call Now Button