As a proud owner of an Enphase Solar Inverter, you’ve made a significant step towards energy independence and sustainability. However, like any advanced piece of technology, your solar inverter may occasionally display error codes or exhibit unusual behaviour. This can be a source of concern, especially when it’s unclear what these codes mean or how to address them.

Fortunately, understanding and troubleshooting your Enphase Solar Inverter doesn’t require a degree in electrical engineering. With some basic knowledge and guidance, you can identify common issues, interpret error codes, and even perform simple fixes. This will not only save you time and money but also ensure that your solar system continues to operate efficiently.

Quick Summary

This comprehensive guide will walk you through the process of troubleshooting common issues with your Enphase Solar Inverter, interpreting error codes, and when to seek professional help from Sydney solar repair specialists.

Understanding Your Enphase Solar Inverter

Before diving into troubleshooting, it’s crucial to understand how your Enphase Solar Inverter works. Unlike traditional string inverters, Enphase uses microinverters, which are small, individual inverters attached to each solar panel. This design allows each panel to operate independently, improving the overall efficiency and reliability of your solar system.

However, this also means that troubleshooting an Enphase system can be slightly different from other inverters. For instance, an issue may only affect one panel rather than the entire array. Therefore, understanding the unique characteristics of your Enphase system will help you diagnose problems more accurately.

Common Error Codes and Their Meanings

One of the most common ways your Enphase Solar Inverter communicates issues is through error codes. These codes appear on the inverter’s display panel and can provide valuable insights into what’s going wrong. Here are some of the most common error codes you might encounter:

  • 120v: This code indicates a low line voltage issue, which can be caused by a problem with your utility grid or home’s electrical system.
  • GFCI: This stands for Ground Fault Circuit Interrupter, and it means that there’s a leakage of current detected in the system.
  • AC Freq: This code signifies that the frequency of the AC power is out of the acceptable range.
  • No AC: This means that the inverter isn’t receiving any AC power, which could be due to a power outage or a problem with your electrical wiring.

Remember, these are just a few examples, and there are many other error codes your Enphase Solar Inverter might display. Always refer to your user manual or consult with a professional for a complete list and explanation of error codes.

Troubleshooting Common Issues

Once you’ve identified the error code, the next step is troubleshooting. Some issues can be resolved with simple fixes, while others may require professional solar inverter repairs. Here are some common problems and their potential solutions:

  • No AC: If your inverter displays this code, first check if there’s a power outage in your area. If not, inspect your circuit breakers to see if any have tripped. If everything seems fine, it’s best to call a professional.
  • Low Line Voltage: This issue could be due to a problem with your utility grid or home’s electrical system. Contact your utility company to check for any issues on their end. If the problem persists, consider seeking help from a solar electrician in Sydney.
  • GFCI: For this error code, it’s recommended to reset your inverter and check if the issue persists. If it does, you’ll likely need professional assistance.

Remember, while troubleshooting can help identify the issue, always consult with a professional before attempting any significant repairs or replacements.

When to Seek Professional Help

While understanding your Enphase Solar Inverter and performing basic troubleshooting can be empowering, it’s important to know when to seek professional help. If an error code persists after troubleshooting, or if you’re dealing with a more complex issue like repeated system failures, it’s time to call in the experts.

Professional solar repair specialists have the knowledge, tools, and experience to diagnose and fix complex issues safely and efficiently. They can also perform regular solar panel servicing to ensure your system stays in top shape and operates at peak efficiency.


In conclusion, understanding and troubleshooting your Enphase Solar Inverter is an essential part of maintaining an efficient and reliable solar system. By familiarising yourself with common error codes and their meanings, you can identify potential issues early and take appropriate action.

However, when in doubt, always seek professional help. The team at Solar Repair Sydney are experts in solar inverter repairs and servicing. So, if you’re experiencing issues with your Enphase Solar Inverter, don’t hesitate to get in touch with us. We’re here to ensure your journey towards sustainable energy is as smooth and hassle-free as possible.


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