734 Update file is not detected or not available - Missing or incorrect software update file.

What does 734 mean?

A warning message indicates that the update file needed for a software update is either not detected or unavailable on the USB stick. This prevents the update process from starting.

• Update file is missing from the USB stick's root directory.
• Incorrect file name.
• Corrupted file, or incompatible file format.

Click steps to track your progress.

1. 1

   Verify that the update file is saved directly in the root directory of the USB stick.

2. 2

   Check the update file name for correctness and ensure it matches the required format for the inverter.

3. 3

   Re-download the update file from the Fronius website to ensure it is not corrupted. If the code persists, contact a Fronius-trained service technician.