What it means
ARM software fault - BMS battery alarm
Cause: BMS battery alarm received.
How to fix it
Alarm only, the device does not stop.
Source: FLS-ES232LC-S.pdf
Felicity ESS error PCS-ARM-44
ARM software fault - BMS battery alarm
Critical — the ESS unit shuts down and latches a protection fault. Don't keep restarting it — the cause needs checking first.
Frequently asked questions
- What does error PCS-ARM-44 mean on a Felicity ESS?
- PCS-ARM-44 means: ARM software fault - BMS battery alarm. BMS battery alarm received.
- Is error PCS-ARM-44 a fault or a warning?
- PCS-ARM-44 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-44?
- Alarm only, the device does not stop.
Related error codes
Other codes on the FLS-ES232LC-S
- 0x10A1WarningCell voltage accumulation overvoltage alarm in battery cluster (level 1).
- 0x10A2FaultCell voltage accumulation overvoltage alarm in battery cluster (level 2).
- 0x10A3CriticalCell voltage accumulation overvoltage alarm in battery cluster (level 3).
- 0x10B1WarningCell voltage accumulation undervoltage alarm in battery cluster (level 1).
- 0x10B2FaultCell voltage accumulation undervoltage alarm in battery cluster (level 2).
- 0x10B3CriticalCell voltage accumulation undervoltage alarm in battery cluster (level 3).
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.