Event 3901 or 3902 — Waiting for DC start conditions, conditions not met

What does 3901, 3902 mean?

The inverter is waiting to start feeding into the utility grid, but the necessary DC start conditions are not yet fulfilled. This usually happens if there isn't enough solar irradiation or if the PV array is not producing sufficient voltage to begin operation.

• PV array covered by snow or other shading.
• Insufficient solar irradiation (e.g., early morning, cloudy weather, low sun angle).
• PV array not correctly rated for starting grid feed-in.
• Voltage limit for starting grid feed-in is set too high.

Click steps to track your progress.

1. 1

   Ensure the PV array is free of snow or any other shading that might be blocking sunlight.

2. 2

   Wait for higher solar irradiation (e.g., later in the morning or during clearer weather conditions).

3. 3

   If this message is frequently displayed in the morning, contact your installer to discuss increasing the 'Critical voltage to start feed-in' parameter.

4. 4

   If this message is displayed frequently with medium irradiation, ensure the PV array is correctly rated for your inverter's startup requirements.