What does 303 mean?

An overtemperature condition has been detected in the DC module associated with the PV system. This causes a short-term interruption in grid feed-in as the inverter attempts to restart its operation.

• Excessively high ambient temperatures around the PV DC module
• Obstructed cooling air openings for the PV DC module
• Accumulation of dirt or debris on the PV DC module's heat sink

Click steps to track your progress.

1. 1

   Purge any obstructions from the cooling air openings of the PV DC module

2. 2

   Clean the heat sink of the PV DC module to improve cooling