PCS-ARM-13Warning

Felicity ESS error PCS-ARM-13

ARM software fault - voltage THDU exceeds the limit

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

FLS-ES232LC-S

Energy storage systemWarning

What it means

ARM software fault - voltage THDU exceeds the limit

Cause: Voltage total harmonic distortion exceeds limit.

How to fix it

  1. Reset to restart.
  2. Check whether THDU of the power grid exceeds 15%; confirm instantaneous power of load is within design range of system distribution.

Source: fls-es232lc-g-2-fls-es232lc-s-user-guide-en.pdf

Frequently asked questions

What does error PCS-ARM-13 mean on a Felicity ESS?

PCS-ARM-13 means: ARM software fault - voltage THDU exceeds the limit. Voltage total harmonic distortion exceeds limit.

Is error PCS-ARM-13 a fault or a warning?

PCS-ARM-13 is a warning: the unit keeps running. Fix the underlying condition before it escalates.

How do I clear or fix error PCS-ARM-13?

Reset to restart. Check whether THDU of the power grid exceeds 15%; confirm instantaneous power of load is within design range of system distribution.

Related error codes

Other codes on the FLS-ES232LC-S

All FLS-ES232LC-S codes

Prefer the full written guide? Read the complete Felicity inverter error-code guide

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