Event 1302 — Waiting for grid voltage / Grid connection installation failure

What does Event 1302 mean?

The inverter displays a grid connection error, indicating it is waiting for grid voltage or there is an installation failure. This typically means either the Live (L) or Neutral (N) conductor is not connected, or the utility grid itself has failed.

• Utility grid failure or power outage.
• Line conductors (L or N) are not correctly connected.
• Miniature circuit breaker for the AC connection is switched off.
• AC cable is damaged or incorrectly connected.

Click steps to track your progress.

1. 1

   Check if there is a general power outage or utility grid failure in your area.

2. 2

   Verify that the line conductors (L and N) are securely connected to the inverter's AC terminal.

3. 3

   Ensure the miniature circuit breaker for the inverter's AC connection is switched on.

4. 4

   Inspect the AC cable for any visible damage and confirm it is connected correctly at both ends.

5. 5

   If the issue persists after these checks, contact a qualified electrician or SMA Support.