What does error PCS-ARM-17 mean on a Felicity ESS?

PCS-ARM-17 means: ARM software fault - DC bus software overvoltage. DC bus overvoltage detected by software.

Is error PCS-ARM-17 a fault or a warning?

PCS-ARM-17 is a warning: the unit keeps running. Fix the underlying condition before it escalates.

Reset to restart. Measure battery voltage of PCS DC terminal within allowable range; check contactor of high-voltage box, DC fuse, DC soft start.

PCS-ARM-17

ARM software fault - DC bus software overvoltage

Warning — a protection warning — the ESS unit keeps running, but deal with the cause before it escalates.

Energy storage systemWarning

ARM software fault - DC bus software overvoltage

Cause: DC bus overvoltage detected by software.

Reset to restart.
Measure battery voltage of PCS DC terminal within allowable range; check contactor of high-voltage box, DC fuse, DC soft start.
More than 3 faults in one day require manual intervention.

Source: FLS-ES232LC-S.pdf

What does error PCS-ARM-17 mean on a Felicity ESS?: PCS-ARM-17 means: ARM software fault - DC bus software overvoltage. DC bus overvoltage detected by software.
Is error PCS-ARM-17 a fault or a warning?: PCS-ARM-17 is a warning: the unit keeps running. Fix the underlying condition before it escalates.
How do I clear or fix error PCS-ARM-17?: Reset to restart. Measure battery voltage of PCS DC terminal within allowable range; check contactor of high-voltage box, DC fuse, DC soft start.

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