How to fix grid lost fault?

Please follow the troubleshooting steps below:

Step 1: Use a multimeter to measure the phase voltage and line voltage at the AC port. Ensure grid voltage is normal.

Step 2: Check the system status "On-grid" information, which inverter displays on the screen. Ensure the detection of grid voltage in the inverter is normal.

Settings path: About → System status → On-grid

Step 3: Upgrade the firmware version to the latest and restart the inverter and check whether the inverter recovers.

If you have completed the above <Guidance for installer>, and the problem is still not solved, please collect the following troubleshooting information and send them to the R&D.

 1.[Photo]SN numbers of the inverter.

2.[Photo]Phase voltage and line voltage at AC side.

3.[Photo]On-grid voltage measured by inverter.