Fault

PCS-ARM-20

ARM software fault - system underfrequency.

1 Devices that report this code

FLS-ES232LC-SEnergy storage system↗ view on device

PCS-ARM-20ARM software fault - system underfrequency.Fault— level 2

Cause

Grid frequency too low.

Recommended fix

Reset to restart. Check whether grid frequency is beyond range of frequency protection action. Check for AC disconnection or islanding.

Source:FLS-ES232LC-S.pdf

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