DC module overtemperature

What does 303 mean?

The DC power module within the inverter has exceeded its safe operating temperature. This triggers a short-term interruption in energy feeding, and the inverter will then attempt to resume operation once the temperature drops.

• Restricted airflow to the inverter's cooling elements
• Accumulation of dust or debris on cooling air openings or heat sink
• High ambient temperature exceeding inverter specifications

Click steps to track your progress.

1. 1

   Purge the cooling air openings and heat sink to ensure proper airflow.

2. 2

   If this status code keeps recurring after cleaning, contact your system engineer for further inspection.