Fault

PCS-ARM-25

ARM software fault - AC main connection switching-on failure.

1 Devices that report this code
FLS-ES232LC-SEnergy storage system↗ view on device
PCS-ARM-25ARM software fault - AC main connection switching-on failure.Fault— level 2
Cause

AC main contactor failed to close.

Recommended fix

Reset to restart. Does not occur on domestic version. if foreign version reports during startup three consecutive times, contact manufacturer to confirm insulation detection logic and contactor sticking.

Source:FLS-ES232LC-S.pdf

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