432

Software problem

Fronius · Solar Energy

What does 432 mean?

An internal software problem has occurred within the inverter, preventing it from feeding any energy into the grid.

Common Causes

  • Internal software error or corruption

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Perform an AC reset by switching the automatic circuit breaker off and on again

  2. 2

    Update the inverter firmware

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Verified technical data. Last updated: March 2026

Related Faults

517Power derating caused by excessively high temperatures105AC frequency too high509No energy fed into the grid in the past 24 hours
Source: Fronius Solar Energy
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