Island Grid Detected

What does 105 mean?

This status code indicates that the Fronius Primo GEN24 208-240 inverter has detected an islanding condition, meaning it is operating independently from the main utility grid. This typically occurs when the mains contactor is open, the AC grid is off, or due to incorrect parameter settings.

• The mains contactor (external to the inverter) is open, disconnecting the inverter from the grid.
• The AC grid supply is intentionally or unintentionally off.
• Incorrect country setup parameter, potentially misinterpreting grid conditions.

Click steps to track your progress.

1. 1

   Verify the status of the AC grid supply; ensure it is present and stable.

2. 2

   Check the status of the mains contactor and ensure it is closed, providing connection to the AC grid.

3. 3

   Check the inverter's parameters for the correct country setup; adjust if necessary to match local grid requirements.

4. 4

   De-energize the inverter (switch off AC and DC disconnects), wait for 5 minutes, then re-energize to reset. If the message persists, the inverter may require service.