746
Error occurred during update process
Fronius · Solar Energy
What does 746 mean?
An error occurred during a software update process, causing the update to be interrupted and a warning message to be displayed.
Common Causes
- Interruption during firmware update (e.g., power loss, communication error)
- Corrupted update file
Repair Steps & Checklist
Click steps to track your progress.
- 1
Wait for 2 minutes
- 2
Start the update process again
Verified technical data. Last updated: March 2026
Related Faults
Source: Fronius Solar Energy