What it means
ARM software fault - islanding protection
Cause: Islanding condition detected.
How to fix it
- Reset to restart.
- Where an islanding is detected, the device is shut down from the on-grid state.
Source: FLS-ES232LC-S.pdf
Felicity ESS error PCS-ARM-23
ARM software fault - islanding protection
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.
Frequently asked questions
- What does error PCS-ARM-23 mean on a Felicity ESS?
- PCS-ARM-23 means: ARM software fault - islanding protection. Islanding condition detected.
- Is error PCS-ARM-23 a fault or a warning?
- PCS-ARM-23 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-23?
- Reset to restart. Where an islanding is detected, the device is shut down from the on-grid state.
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.