7. Maintenance
This section contains information and procedures for solving possible problems with the inverters and provides
you with troubleshooting tips to identify and solve most problems that can occur.
7.1 Alarm List
- Turn off the PV and grid, reconnect them.
- Please seek for help from us if it does not go back to normal state.
- Disconnect PV (+), PV (-) with DC.
- After the LCD switches off, reconnect and check again.
- Please seek for help from us if it does not go back to normal state.
- Wait for one minute after the inverter reconnects to grid.
- Disconnect PV (+), PV (-) with DC.
- After the LCD switches off, reconnect and check again.
- Please seek for help from us if it does not go back to normal state.
- Disconnect PV (+), PV (-) with DC.
- After the LCD switches off, reconnect and check again.
- Please seek for help from us if it does not go back to normal state.
- Disconnect DC and AC connector, check the surrounding equipment on
the AC side.
- Reconnect the input connector and check the state of inverter after
troubleshooting.
- Please seek for help from us if it does not go back to normal state.
- Disconnect PV (+), PV (-) with DC.
- After the LCD switches off, reconnect and check again.
- Please seek for help from us if it does not go back to normal state.
- System will reconnect if the grid is back to normal.
- Or seek for help from us if it does not go back to normal state.
- Wait for one minute, grid may go back to normal working state.
- Make sure that grid voltage and frequency complies with standards.
- Or please seek for help from us.
- Please check grid-connection, e.g., wires, interface etc.
- Checking grid usability.
- Or seek for help from us.
- Disconnect PV (+), PV (-) with DC.
- After the LCD switches off, reconnect and check again.
- Please seek for help from us if it does not go back to normal state.
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