HID range error

What does 421 mean?

This code indicates an HID (Hardware ID) range error, suggesting an issue with the identification or compatibility of an internal hardware component. This can stem from incorrect component installation or a data integrity issue.

• Internal hardware component recognized with an ID outside its permissible range.
• Incompatible or incorrectly installed PC board.
• Corrupted firmware or hardware ID data.

Click steps to track your progress.

1. 1

   If the status code is displayed continuously, notify a Fronius-trained service engineer for diagnosis.

2. 2

   Perform an AC reset to attempt re-initialization of internal hardware components.

3. 3

   Verify the integrity of internal hardware components and their proper seating.