Intermediate circuit voltage too high

What does 308 mean?

This code indicates that the intermediate DC bus voltage within the inverter has exceeded its permissible upper limit. This causes a short-term interruption in energy feeding, after which the inverter will attempt to resume its startup routine.

• Excessive DC input voltage from the PV array, potentially due to incorrect string sizing or open circuit conditions.
• Grid overvoltage causing DC bus voltage to rise.
• Malfunction in the inverter's DC-DC converter or control circuitry.

Click steps to track your progress.

1. 1

   If this status code keeps recurring, contact your system engineer for diagnosis.

2. 2

   Verify the PV string configuration and open-circuit voltage (Voc) to ensure it is within the inverter's specified DC input range.

3. 3

   Measure the DC bus voltage at the intermediate circuit to verify actual voltage levels.