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

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Verified technical data. Last updated: March 2026

Related Faults

313Battery input voltage too high520No energy fed into the grid by the PV in the past 24 hours559Functional incompatibility (PC boards)
Source: Fronius Solar Energy
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