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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.

984

Battery controller has stopped Charge mode

Fronius · Solar Energy

What does 984 mean?

The battery controller has stopped its charge mode, preventing battery operation. Grid feed-in will resume.

Common Causes

  • Internal fault within the battery controller
  • External condition triggering charge termination (e.g., cell imbalance, over-voltage/current protection)

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check for specific error messages displayed on the Fronius Solar Battery display unit for more details

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