Critical

0x20B3

Battery cluster SBCU internal bus voltage sampling fault (before applying high voltage).

1 Devices that report this code

FLS-ES232LC-SEnergy storage system↗ view on device

0x20B3Battery cluster SBCU internal bus voltage sampling fault (before applying high voltage).Critical— level 3

Cause

Invalid internal bus voltage sampling.

Recommended fix

Send faults externally, cluster disables insulation detection function with high voltage prohibited. Recovers on normal sampling.

Source:FLS-ES232LC-S.pdf

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