986

Overtemperature at Fronius Solar Battery

Fronius · Solar Energy

What does 986 mean?

The Fronius Solar Battery has tripped due to an overtemperature condition. Battery operation is no longer possible, but grid feed-in resumes.

Common Causes

  • Excessively high ambient temperature around the Fronius Solar Battery
  • Blocked ventilation or cooling issues within the battery enclosure

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Reduce the ambient temperature around the Fronius Solar Battery

  2. 2

    Switch off the Fronius Solar Battery, allow it to cool down for an appropriate amount of time, then activate it again

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

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