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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.

975

Software on device is inconsistent

Fronius · Solar Energy

What does 975 mean?

The software installed on the device is inconsistent or corrupted, preventing the inverter from feeding any energy into the grid.

Common Causes

  • Corrupted or inconsistent software installation
  • Incomplete or failed software update

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Update the inverter firmware

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 130)Search more codes in this manual