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: March 2026

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