Event 3301 or 3303 — Unstable operation, insufficient DC power

What does 3301, 3303 mean?

The inverter is unable to connect to the utility grid due to insufficient power at its DC input. This means the PV array is not supplying enough electricity for stable operation.

• PV array not designed correctly for the inverter.
• PV array covered by snow or other shading.
• Errors within the PV array itself (e.g., faulty modules or wiring).

Click steps to track your progress.

1. 1

   Ensure that the PV array is free of snow or any other shading.

2. 2

   Visually inspect the PV array for any apparent damage or faults on the modules or wiring.

3. 3

   Verify that the PV array has been designed correctly to match your inverter model's requirements.

4. 4

   If the problem persists, contact your installer to check the PV array for errors.