PCS-ARM-37Fault

Felicity ESS error PCS-ARM-37

ARM software fault - start-up conditions are not met

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 - start-up conditions are not met

Cause: Start-up preconditions failed.

How to fix it

  1. Reset to restart.
  2. Check whether off-grid and on-grid setting matches actual wiring; after disconnecting from grid with no load, wait for AC terminal voltage to drop to near 0 before starting again.

Source: FLS-ES232LC-S.pdf

Frequently asked questions

What does error PCS-ARM-37 mean on a Felicity ESS?
PCS-ARM-37 means: ARM software fault - start-up conditions are not met. Start-up preconditions failed.
Is error PCS-ARM-37 a fault or a warning?
PCS-ARM-37 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-37?
Reset to restart. Check whether off-grid and on-grid setting matches actual wiring; after disconnecting from grid with no load, wait for AC terminal voltage to drop to near 0 before starting again.

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.