This is the complete fault table for the Felicity FLA48250 Battery — all 14 codes from the official manual on one page. On this Felicity device, a fault code means the unit has entered protection and stopped normal operation; a warning leaves it running. The exact indication (LED pattern or display code) is listed per code below.
Last checked against the official manuals on July 10, 2026.
BMS reports total battery pack voltage above the upper protection threshold.
CauseThe total battery pack voltage rose above its rated protection value during charging, so the BMS stopped charging. The protection releases once the pack voltage returns to the rated range.
Recommended fixRestart the unit. if the error persists, contact the repair center.
Source:6peluqppy_66a93554057c8.pdf· page 12
BMS reports total battery pack voltage below the lower protection threshold.
CauseThe total pack voltage fell below its rated protection value during discharging (over-discharge), so the BMS stopped supplying power. The protection releases once the voltage returns to the rated range.
Recommended fixRestart the unit. if the error persists, contact the repair center.
Source:6peluqppy_66a93554057c8.pdf· page 12
Individual cell voltage has exceeded its upper protection threshold.
CauseAn individual cell reached its over-voltage protection value during charging, typically from cell imbalance letting one cell run ahead of the pack, so the BMS stopped charging.
Recommended fixRestart the unit. if the error persists, contact the repair center.
Source:6peluqppy_66a93554057c8.pdf· page 12
Individual cell voltage has fallen below its lower protection threshold.
CauseAn individual cell fell below its under-voltage protection value during discharging, usually deep discharge or a weak, imbalanced cell, so the BMS stopped supplying power.
Recommended fixRestart the unit. if the error persists, contact the repair center.
Source:6peluqppy_66a93554057c8.pdf· page 12
Charging current exceeds the BMS protection limit.
CauseThe charging current reached the BMS trigger value and stayed there for 15 seconds, activating charge overcurrent protection: the charger or inverter is pushing more current than the pack accepts. The battery disables both charging input and discharging output while in fault mode.
Recommended fixRestart the unit. if the error persists, contact the repair center.
Source:6peluqppy_66a93554057c8.pdf· page 12
Discharge current exceeds the BMS protection limit.
CauseThe discharging current reached the BMS trigger value and stayed there for 15 seconds, activating discharge overcurrent protection: the load or inverter is drawing more current than the pack's discharge limit. The battery disables both charging input and discharging output while in fault mode.
Recommended fixRestart the unit. if the error persists, contact the repair center.
Source:6peluqppy_66a93554057c8.pdf· page 12
MOSFET (power switch) temperature is over the protection limit.
Cause1. The inner temperature is over the limitation. 2. Check whether the ambient temperature is too high.
Recommended fixReduce ambient/inner temperature; allow the unit to cool. Verify ventilation and that ambient temperature is within the operating range.
Source:6peluqppy_66a93554057c8.pdf· page 12
MOSFET (power switch) temperature is below the protection limit.
Cause1. The internal temperature is lower than the limit range. 2. Check whether the ambient temperature is too low.
Recommended fixRaise ambient/inner temperature; verify ambient temperature is within the operating range.
Source:6peluqppy_66a93554057c8.pdf· page 12
Battery cell temperature has exceeded its upper protection threshold.
CauseInverter internal temperature has exceeded the safe operating threshold. Causes include high ambient temperature, blocked cooling vents, failed cooling fan, or installation in direct sunlight.
Recommended fixRestart the unit. if the error persists, contact the repair center.
Source:6peluqppy_66a93554057c8.pdf· page 13
Battery cell temperature has fallen below its lower protection threshold.
CauseInverter ambient temperature is below the minimum operating range. Most common in unheated outdoor installs in winter.
Recommended fixRestart the unit. if the error persists, contact the repair center.
Source:6peluqppy_66a93554057c8.pdf· page 13
BMS detected an abnormal reading from the current sampling circuit.
CauseThe BMS current sensor or its sampling circuit returned an abnormal reading. This is an internal hardware fault in the current-measurement path, not an installation issue.
Recommended fixRestart the unit. if the error persists, contact the repair center.
Source:6peluqppy_66a93554057c8.pdf· page 13
BMS detected abnormal output impedance on the DC output path.
CauseThe BMS measured abnormal impedance on the battery's output path, commonly a loose or corroded output terminal connection, or a contactor or wiring issue.
Recommended fixRestart the unit. if the error persists, contact the repair center.
Source:6peluqppy_66a93554057c8.pdf· page 13
Battery pack failed to establish or maintain parallel operation with other packs.
CauseSingle unit may be incorrectly set to parallel system; or wiring between parallel-connected battery packs is incorrect/incomplete.
Recommended fix1. Please check if a single unit is installed to the parallel system. 2. if this error happens during parallel installation, please check wires connection. if they are connected correctly, please finish parallel installation first, and then restart the unit. 3. if the problem remains, please contact your installer.
Source:6peluqppy_66a93554057c8.pdf· page 13
BMS detected loss of output from the battery pack (no power on the output side).
CauseCircuit breaker may be open, or the fuse may be blown.
Recommended fix1. Please check whether the circuit breaker is closed. 2. Please check whether the fuse is normal. 3. Restart the unit. if the error persists, contact the repair center.
Source:6peluqppy_66a93554057c8.pdf· page 13
Send us the code on your screen and a Felicity technician will reply with the exact steps for your unit. Support is free for life — a first diagnosis never needs a callout.
Compiled from official Felicity user manuals. Always consult your device manual and a qualified technician before performing repairs.