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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.

987

Undertemperature at Fronius Solar Battery

Fronius · Solar Energy

What does 987 mean?

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

Common Causes

  • Excessively low ambient temperature around the Fronius Solar Battery

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Increase the ambient temperature around the Fronius Solar Battery

  2. 2

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

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 131)Search more codes in this manual