What does error PCS-ARM-39 mean on a Felicity ESS?

PCS-ARM-39 means: ARM software fault - inverter startup timeout. Inverter did not start within timeout.

Is error PCS-ARM-39 a fault or a warning?

PCS-ARM-39 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-39?

Power down the inverter, wait 5 minutes for capacitors to discharge, then restart. If the fault recurs immediately or repeatedly, record the exact code and contact your installer or the manufacturer's service line.

PCS-ARM-39

Felicity ESS error PCS-ARM-39

ARM software fault - inverter startup timeout

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 - inverter startup timeout

Cause: Inverter did not start within timeout.

How to fix it

Power down the inverter, wait 5 minutes for capacitors to discharge, then restart.
If the fault recurs immediately or repeatedly, record the exact code and contact your installer or the manufacturer's service line.

Source: FLS-ES232LC-S.pdf

Frequently asked questions

What does error PCS-ARM-39 mean on a Felicity ESS?: PCS-ARM-39 means: ARM software fault - inverter startup timeout. Inverter did not start within timeout.
Is error PCS-ARM-39 a fault or a warning?: PCS-ARM-39 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-39?: Power down the inverter, wait 5 minutes for capacitors to discharge, then restart. If the fault recurs immediately or repeatedly, record the exact code and contact your installer or the manufacturer's service line.

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.