Sungrow Error Code 8

Sungrow Inverter Error Code 8

Is your Sungrow Solar Inverter showing up with Error Code 8 on the screen? When a problem occurs, the “Error” state will be shown on the main screen.

Your Sungrow Solar Inverter is showing Error Code 8 because the electricity frequency from your main power grid is too high for your inverter to handle. This means the rhythm at which electrical power is being delivered is faster than what your inverter can safely work with. This can happen due to fluctuations in the power grid and needs to be fixed to avoid damage to your inverter or your electrical devices.

To fix this issue, follow these steps in simple language:

1. Turn Off the Inverter: Find the main power switch for your inverter and turn it off. This is usually located on the inverter itself or on your electrical panel.
2. Check Grid Connection: Make sure your inverter’s connection to the power grid is secure and there are no loose wires or connections.
3. Wait and Observe: After turning off the inverter, wait for a few minutes. This allows the system to reset and the grid frequency to stabilize.
4. Turn the Inverter Back On: Turn your inverter back on and check if the error code still appears.
5. Monitor the Inverter: If the error code doesn’t come back, keep an eye on the inverter for a day or two to make sure the problem is resolved.
6. Contact Utility Company: If the error keeps coming back, there might be a larger issue with the grid frequency in your area. In this case, contact your utility company to report the problem.
7. Seek Professional Help: If the problem persists even after contacting the utility company, it’s best to get in touch with a professional technician or the Sungrow customer service for further assistance. They can provide more specific guidance or service your inverter if needed.

Troubleshooting to try

• Check if your inverter is switched on
• Check if your DC isolator is turned on
• Check if all the light indicators are green
• Try rebooting the whole system

How to restart/reset/reboot your solar inverter?

Follow the inverter shut down procedure label which may be located on your inverter or the main switchboard of your house.

Typically, this procedure will be:

1. Turn off the AC “Solar Supply Main Switch” or “Inverter Main Switch” located on the main switchboard of the house.
2. Turn off the AC isolator at the inverter (if present)
3. Turn off the “PV array DC isolator”, located next to the inverter. The screen should go blank, and the lights should go off.  Leave it like this for five minutes or so, and then switch it back on.
4. Wait a few minutes…
5. Turn the inverter back in reverse order (DC isolator first, AC second).
6. DC On first. It is very important that you restart by switching the DC isolator on first, as you shouldn’t switch DC under load (ie with the AC on), as the isolator could arc.
7. AC On next. Put the AC switch (solar supply main switch) back on, and then wait.  All inverters take at least one minute to restart, and you may see the lights flashing while the inverter does internal testing.  There will also be a variety of messages on the screen again as it tests.  This is quite normal.

Sungrow Maintenance

Regular maintenance ensures a long operating life and optimal efficiency of the entire PV plant. Risk of inverter damage or personal injury due to incorrect service! Always keep in mind that the inverter is powered by dual sources: PV strings and utility grid.

Before any service work, observe the following procedure:

• Disconnect the AC circuit breaker and then set the DC load-break switch if the inverter to OFF;
• Wait at least 10 minutes for inner capacitors to discharge completely;
• Verify that there is no voltage or current before pulling any connector.

Maintenance Items include:

• System Clean (Once six to twelve months) – Check the temperature and dust of the inverter. Clean the inverter enclosure if necessary. Check if the air inlet and outlet are normal. Clean the air inlet and outlet, if necessary.