Critical

0x9052

Excessive temperature in the high-voltage box of the battery cluster.

1 Devices that report this code
FLS-ES232LC-SEnergy storage system↗ view on device
0x9052Excessive temperature in the high-voltage box of the battery cluster.Critical— level 3
Cause

SBCU detects BJB_NTC > 60°C.

Recommended fix

Send faults externally, limit power, request lower high voltage; if command not received within 5s, cut off the main circuit relay. Recovers when BJB_NTC < 50°C.

Source:FLS-ES232LC-S.pdf

Compiled from official FelicityESS user manuals. Always consult your device manual and a qualified technician before performing repairs.