If you have a solar system with a SolarEdge inverter, you may have noticed that the green light on the inverter sometimes blinks. What does this mean and should you be concerned?
Lights on a SolarEdge Inverter
A SolarEdge inverter has a switch and three colored LEDs that indicate system information, such as errors or performance⁴. The following table summarizes the meaning of each light:
| LED | Meaning |
|---|---|
| Blue | Inverter is communicating with the monitoring platform |
| Green | System is producing AC power |
| Red | System error |
The lights can also flash or be solid, depending on the status of the system. The following table shows some examples of light combinations and what they mean:
| LED Combination | Meaning |
|---|---|
| Solid blue, solid green, solid red | System error and inverter is communicating with the monitoring platform |
| Solid blue, solid green, no red | AC is connected but the system is not producing AC power and the inverter is communicating with the monitoring platform |
| Solid blue, no green, no red | The system is producing AC power but inverter is not communicating with the monitoring platform |
| No blue, solid green, no red | System error but the inverter is not communicating with the monitoring platform |
| No blue, no green, solid red | System error and inverter are communicating with the monitoring platform |
Why SolarEdge Inverter Flashing Green Light?
A flashing green light on a SolarEdge inverter typically indicates that the inverter is in the process of being initialized or is searching for a connection to the utility grid.
This is a normal operating state. The flashing green light typically happens when the solar inverter is first installed or switched on, or when the power is out and back on.
If the green light continues to flash for more than a few minutes, this could indicate a problem with the inverter setup, installation, or the input from the solar panels and needs to be checked.
You can also check if there is an error message on the inverter display. If so, please refer to the SolarEdge operations manual for troubleshooting steps.
How to Fix SolarEdge Inverter Flashing Green Light?
If your SolarEdge inverter green light is blinking for a long time and there is an error message on the display, you may need to contact your installer or SolarEdge customer support for assistance. Some common error messages and their possible causes are:
AC voltage out of range
The voltage from the utility grid is too high or too low for the inverter to operate. This could be due to a grid fault or a wiring issue. Check if other appliances are working properly and if there are any power outages or fluctuations in your area.
AC frequency out of range
The frequency from the utility grid is too high or too low for the inverter to operate. This could be due to a grid fault or a wiring issue. Check if other appliances are working properly and if there are any power outages or fluctuations in your area.
Isolation fault
There is a leakage of current from the DC side of the system to the ground. This could be due to damaged wiring, connectors, or components.
Turn off the AC breaker and disconnect all DC sources from the inverter. Check for any visible signs of damage or corrosion and contact your installer for repair.
Hardware error
There is an internal fault in the inverter hardware. This could be due to defective components or overheating. Turn off the AC breaker and disconnect all DC sources from the inverter. Wait for 10 minutes and then reconnect everything. If the error persists, contact your installer for repair.
Conclusion
A blinking green light on your SolarEdge inverter usually means that it is initializing or searching for a grid connection. This is normal and should stop after a few minutes.
If it does not stop or if there is an error message on the display, you may need to contact your installer or SolarEdge customer support for assistance. You can also check the SolarEdge operations manual for more information on how to troubleshoot your inverter.
