As a homeowner, you’ve made the smart choice to harness the power of the sun with a Goodwe solar inverter. But, like any technology, it’s not immune to occasional hiccups. When your inverter starts flashing error codes or behaving unusually, it can be daunting. But don’t worry, as your trusted Brisbane solar repair specialists, we’re here to help you understand and troubleshoot your Goodwe solar inverter.

Whether you’re experiencing a sudden drop in power output, or your inverter is displaying unfamiliar error codes, this guide will help you identify the problem and provide you with potential solutions. Remember, while some issues can be resolved with simple troubleshooting, others may require professional solar inverter repairs. Let’s dive into the world of Goodwe solar inverter troubleshooting and error codes.

Quick Summary

Goodwe solar inverters may display error codes due to various issues such as grid faults, isolation faults, or communication errors. Understanding these codes can help you troubleshoot problems and determine when professional assistance is required.

Understanding Goodwe Solar Inverter Error Codes

Goodwe inverters use a system of error codes to communicate specific issues. These codes appear on the inverter’s digital display and can provide valuable insights into what’s going wrong with your system. Understanding what these codes mean is the first step towards resolving any issues.

Here are some of the most common Goodwe solar inverter error codes:

  • Error 01: Grid Fault – This code indicates a problem with the connection to the electrical grid.
  • Error 02: Isolation Fault – This code suggests that there’s a leakage current in the system.
  • Error 03: Bus Overvoltage – This code means the DC bus voltage is too high.
  • Error 04: Bus Undervoltage – This code indicates the DC bus voltage is too low.
  • Error 07: Communication Error – This code signifies a communication problem between the inverter and the monitoring device.

Troubleshooting Goodwe Solar Inverter Issues

Once you’ve identified the error code, you can start troubleshooting. Some issues can be resolved by resetting the inverter, checking the connections, or updating the firmware. However, if the problem persists, it’s best to contact a solar electrician in Brisbane for professional assistance.

For example, if you’re facing a Grid Fault (Error 01), check if there’s a power outage in your area. If not, try resetting your inverter. For an Isolation Fault (Error 02), inspect your solar panels and cables for any visible damage. If you can’t find any, it’s time to call in the professionals.

When To Seek Professional Help

While understanding error codes and basic troubleshooting can help you manage minor issues, some problems require professional intervention. If your inverter continues to display error codes despite your troubleshooting efforts, or if you’re uncomfortable performing these checks yourself, it’s time to seek professional help.

Remember, working with electrical systems can be dangerous if not handled correctly. Therefore, for complex issues like Bus Overvoltage (Error 03) or Bus Undervoltage (Error 04), it’s safer and more efficient to let the experts handle it. Our team of solar panel repairs professionals in Brisbane are always ready to assist you.

Preventing Future Issues

Regular maintenance is key to preventing future issues with your Goodwe solar inverter. This includes regular solar panel cleaning, checking for any visible damage, and ensuring your system’s software is up-to-date.

Additionally, consider scheduling regular solar health checks in Brisbane. These checks can help identify potential issues before they become serious problems, ensuring your solar system continues to operate at peak efficiency.


Understanding and troubleshooting your Goodwe solar inverter doesn’t have to be a daunting task. By familiarising yourself with the common error codes and knowing when to seek professional help, you can ensure your solar system continues to provide reliable, renewable energy for your home.

Remember, whether you need help with troubleshooting, repairs, or regular maintenance, our team of solar repair specialists in Brisbane is just a call away. Don’t let solar inverter issues cast a shadow over your renewable energy journey. Reach out to us today for all your solar repair needs.


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