Grid fault (Frequency Out of Range)

What does 501 mean?

The power frequency is not within the permissible range, causing the inverter to disconnect from the utility grid. Frequent occurrences suggest a persistent issue with grid frequency stability.

• Power frequency is outside the permissible operating range.

Click steps to track your progress.

1. 1

   If possible, check the power frequency and observe how often fluctuations occur.

2. 2

   If fluctuations occur frequently and this message is displayed often, contact the grid operator and request approval to change the operating parameters of the inverter.

3. 3

   If the grid operator gives approval, discuss any changes to the operating parameters with the Service.