Sungrow Error Code 14

Sungrow Inverter Error Code 14

Is your Sungrow Solar Inverter showing up with Error Code 14 on the screen? When a problem occurs, the “Error” state will be shown on the main screen.

Error Code 14 on your Sungrow Solar Inverter means that the electricity voltage coming from your local power grid is higher than what the inverter can safely handle, and this has been happening for more than 10 minutes. This can be risky for the inverter and your home’s electrical devices.

To fix this issue, follow these steps:

1. Turn Off the Inverter: Find the main power switch on your inverter and turn it off. This will stop the inverter from operating and prevent any possible damage.
2. Check Other Devices: Look around your home to see if other electrical devices are experiencing problems, which might indicate a wider issue with your home’s electrical system.
3. Reset the Inverter: After waiting for a few minutes, turn the inverter back on. Sometimes, a simple reset can clear the error.
4. Contact Your Utility Company: If the error persists, there might be a problem with the grid voltage in your area. Contact your local utility company and report the issue. They can check and adjust the grid voltage if it’s too high.
5. Call a Professional: If none of the above steps work, it’s best to call a certified electrician or contact Sungrow’s support. They can safely inspect and fix any issues with your inverter or electrical setup.

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.