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
Check for specific error messages displayed on the Fronius Solar Battery display unit for more details
Verified technical data. Last updated: March 2026
Related Faults
Source: Fronius Solar Energy