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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.

30

Thermal Runaway

Fronius · Perfect Charging

What does 30 mean?

The battery is experiencing an uncontrolled self-heating process, characteristic of thermal runaway. This is an extremely dangerous condition that can escalate rapidly, leading to smoke, fire, or explosion if not immediately contained.

Common Causes

  • An internal short circuit within the battery cells, leading to localized heating and increased current flow.
  • Overcharging at excessive currents or voltages, generating uncontrolled heat.
  • Physical damage to the battery, compromising cell integrity and leading to internal reactions.
  • External heating combined with internal heat generation, pushing the battery beyond its thermal limits.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    IMMEDIATELY isolate the battery and charger from all connections if it can be done safely without risk to personnel.

  2. 2

    Follow all established safety protocols for handling thermal runaway incidents, which may include evacuation of the area and activation of appropriate fire suppression systems.

  3. 3

    Do not attempt to re-use the battery or charger without a thorough inspection and certification by a qualified professional to ensure safety.

Browse all codes in this manual (61)
Verified technical data. Last updated: April 2026

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Source: Fronius Perfect Charging
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