What does error PCS-ARM-19 mean on a Felicity ESS?

PCS-ARM-19 means: ARM software fault - system overfrequency. Grid frequency too high.

Is error PCS-ARM-19 a fault or a warning?

PCS-ARM-19 is a fault code: the ESS unit enters protection and stops normal operation until it is cleared.

How do I clear or fix error PCS-ARM-19?

Reset to restart. Check whether grid frequency is beyond range of frequency protection action.

PCS-ARM-19

Felicity ESS error PCS-ARM-19

ARM software fault - system overfrequency

Fault — the ESS unit enters fault protection and stops normal operation until the fault is cleared — how it is shown (LED pattern or display code) depends on the model.

FLS-ES232LC-S

Energy storage systemFault

What it means

ARM software fault - system overfrequency

Cause: Grid frequency too high.

How to fix it

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

Frequently asked questions

What does error PCS-ARM-19 mean on a Felicity ESS?: PCS-ARM-19 means: ARM software fault - system overfrequency. Grid frequency too high.
Is error PCS-ARM-19 a fault or a warning?: PCS-ARM-19 is a fault code: the ESS unit enters protection and stops normal operation until it is cleared.
How do I clear or fix error PCS-ARM-19?: Reset to restart. Check whether grid frequency is beyond range of frequency protection action.

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.