736 Write or read error occurred - USB stick data transfer issue.

What does 736 mean?

A warning message indicates that an error occurred while the inverter was trying to write or read data from the USB stick. This can prevent logging or updates from completing.

• Faulty USB stick.
• Corrupted files on the USB stick.
• USB stick removed prematurely during data transfer.

Click steps to track your progress.

1. 1

   Check the USB stick for any physical damage or corruption.

2. 2

   Replace the USB stick with a different, known-good one.

3. 3

   Ensure the USB stick is only removed when the "Data Transfer" LED is no longer flashing or lit. If the code persists, contact a Fronius-trained service technician.