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ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

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. 1

    Wait for 2 minutes

  2. 2

    Start the update process again

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

1Hardware fault102AC voltage too high103AC voltage too low
Source: Fronius Solar Energy
Open Manual (Page 129)Search more codes in this manual