About the Felicity LUX-E-48100LG04
The Felicity LUX-E-48100LG04 is a Battery unit. The 12 error codes listed below are the complete fault catalog for this device, compiled from the official Felicity user manual.
LUX-E-48100LG04
Battery12 codes 12 Fault
How to use this page
Each row below shows an error code, its severity, and a brief description. Click any row to expand the full cause and the recommended fix. The severity dot tells you whether the unit will keep operating (warning), derate (fault), or trip offline (critical). For codes that require an authorized service partner, the recommended-fix block says so explicitly.
FAULT (RED ON, LED1=OFF, LED2=OFF, LED3=OFF, LED4=ON)BMS TEMPERATURE LOW.Fault
Cause
BMS internal temperature fell below the lower protection threshold.
Recommended fix
Warm the installation environment (operating range Charge: 0°C–55°C, Discharge: -20°C–55°C). The fault will self-clear once temperature returns to range. if the fault persists, contact the local distributor.
Source:
LUX-E-48100LG04-Lithium-Battery-User-Guide.pdf · page 12FAULT (RED ON, LED1=OFF, LED2=OFF, LED3=ON, LED4=OFF)CELL VOLTAGE LOW.Fault
Cause
An individual cell voltage fell below the lower cell protection threshold.
Recommended fix
Recharge the battery promptly. The BMS will self-recover once cell voltage recovers. if the fault persists, contact the local distributor.
Source:
LUX-E-48100LG04-Lithium-Battery-User-Guide.pdf · page 12FAULT (RED ON, LED1=OFF, LED2=ON, LED3=OFF, LED4=OFF)BATTERY VOLTAGE LOW.Fault
Cause
Total battery pack voltage fell below the BMS lower protection threshold (undervoltage protection).
Recommended fix
Recharge the battery promptly (per section 10.1, the battery should be charged in time when undercharged or stored more than 3 months). The BMS will automatically return to normal once voltage recovers. if the fault persists, contact the local distributor.
Source:
LUX-E-48100LG04-Lithium-Battery-User-Guide.pdf · page 12FAULT (RED ON, LED1=OFF, LED2=ON, LED3=OFF, LED4=ON)CELL TEMPERATURE LOW.Fault
Cause
An individual cell temperature fell below the lower protection threshold (charge: below 0°C; discharge: below -20°C).
Recommended fix
Warm the environment until cells are within the operating range (Charge: 0°C–55°C, Discharge: -20°C–55°C). The fault will self-clear once temperature normalises. if the fault persists, contact the local distributor.
Source:
LUX-E-48100LG04-Lithium-Battery-User-Guide.pdf · page 12FAULT (RED ON, LED1=OFF, LED2=ON, LED3=ON, LED4=OFF)DISCHARGING CURRENT HIGH.Fault
Cause
Discharging current exceeded the BMS overcurrent protection threshold.
Recommended fix
Reduce load current; verify the load is within the recommended 50A and max-continuous 60A limits (peak 100A for 15s). The BMS will self-recover once current returns to normal. if the fault persists, contact the local distributor.
Source:
LUX-E-48100LG04-Lithium-Battery-User-Guide.pdf · page 12FAULT (RED ON, LED1=ON, LED2=OFF, LED3=OFF, LED4=OFF)BATTERY VOLTAGE HIGH.Fault
Cause
Total battery pack voltage exceeded the BMS upper protection threshold (overvoltage protection).
Recommended fix
Stop charging and allow voltage to drop. The BMS will automatically return to normal once the trigger condition is removed. if the fault persists, contact the local distributor.
Source:
LUX-E-48100LG04-Lithium-Battery-User-Guide.pdf · page 12FAULT (RED ON, LED1=ON, LED2=OFF, LED3=OFF, LED4=ON)CELL TEMPERATURE HIGH.Fault
Cause
An individual cell temperature exceeded the upper protection threshold.
Recommended fix
Stop charging/discharging and allow the cell to cool; check ambient temperature is within the operating range. The fault will self-clear once temperature normalises. if the fault persists, contact the local distributor.
Source:
LUX-E-48100LG04-Lithium-Battery-User-Guide.pdf · page 12FAULT (RED ON, LED1=ON, LED2=OFF, LED3=ON, LED4=OFF)CHARGING CURRENT HIGH.Fault
Cause
Charging current exceeded the BMS overcurrent protection threshold.
Recommended fix
Reduce charging current; verify charger/inverter is configured within the recommended 50A and max-continuous 60A limits (peak 100A for 15s). The BMS will self-recover once current returns to normal. if the fault persists, contact the local distributor.
Source:
LUX-E-48100LG04-Lithium-Battery-User-Guide.pdf · page 12FAULT (RED ON, LED1=ON, LED2=ON, LED3=OFF, LED4=OFF)CELL VOLTAGE HIGH.Fault
Cause
An individual cell voltage exceeded the upper cell protection threshold.
Recommended fix
Stop charging and allow the affected cell voltage to drop. The BMS will self-recover once the trigger condition is removed. if the fault persists, contact the local distributor.
Source:
LUX-E-48100LG04-Lithium-Battery-User-Guide.pdf · page 12FAULT (RED ON, LED1=ON, LED2=ON, LED3=OFF, LED4=ON)CURRENT SENSOR ABNORMAL.Fault
Cause
BMS detected an abnormal reading from the current-sampling circuit / current sensor.
Recommended fix
Restart the battery (turn breaker OFF then ON, press POWER for 1 second). if the fault persists, contact the local distributor (per section 10.2: when the LED does not light up or flash on power-up, consider contacting the local distributor).
Source:
LUX-E-48100LG04-Lithium-Battery-User-Guide.pdf · page 12FAULT (RED ON, LED1=ON, LED2=ON, LED3=ON, LED4=OFF)BMS TEMPERATURE HIGH.Fault
Cause
BMS internal (MOSFET / control board) temperature exceeded the upper protection threshold.
Recommended fix
Check the ambient temperature and cooling space around the unit (per section 8.3 ambient must be 0°C–45°C). Allow the BMS to cool. The fault will self-clear once temperature returns to range. if the fault persists, contact the local distributor.
Source:
LUX-E-48100LG04-Lithium-Battery-User-Guide.pdf · page 12LOW POWER (GREEN FLASH, RED OFF, all LEDs OFF)Low Power / Low SOC shutdown.Fault
Cause
Battery state-of-charge is critically low and the system has entered low-power state with output disabled.
Recommended fix
Recharge the battery. Per section 10.1, charge the battery in time if it is often under-charged or has been stored for more than 3 months. The system will return to normal once charging restores SOC.
Source:
LUX-E-48100LG04-Lithium-Battery-User-Guide.pdf · page 12Step-by-step troubleshooting checklist
- 1.Note the exact code and timing
Write down the exact code shown on the display, what the unit was doing when it appeared (charging, discharging, idle, grid-tied), and any LEDs or audible alarms. The same code can have different fixes depending on context.
- 2.Check the recommended fix on this page
Find the code in the list below and read the cause + recommended fix. Most warning-level codes can be cleared by following the listed action — usually reducing load, checking wiring, or restarting the unit.
- 3.Verify the source manual page
Each code shows the source manual filename and page number. Open that exact page in the official manual to verify model-specific notes (firmware version, parallel-config notes, regional variants) before acting.
- 4.Disconnect AC, DC, and battery before opening
If a fix requires opening the enclosure or accessing terminals, disconnect AC input, DC PV, and battery in that order. Wait at least 60 seconds for capacitors to discharge before touching any conductors.
- 5.Escalate critical codes to authorized service
Critical codes (short-circuit, IGBT failure, BMS hardware error) should not be cleared by end users. Note the code, model number, and source manual page, then contact an authorized service partner.
Common questions about LUX-E-48100LG04 error codes
- Where can I find the official Felicity LUX-E-48100LG04 error code manual?
- Each code on this page lists the official source manual filename and page number at the bottom. The manuals are published by Felicity on their website; we compile the codes here so you can search across all of them at once instead of opening each PDF.
- Is the LUX-E-48100LG04 the same as other Felicity models?
- Some Felicity units share firmware across a family of variants — the same fault codes apply to multiple model numbers. Look at the "also covers" chips below the title to see which other model numbers this page applies to.
- What's the most critical code on a Felicity LUX-E-48100LG04?
- Critical-severity codes (red dot) are the ones that trip the unit offline immediately — typically short-circuit, IGBT, or BMS hardware failures. These are listed first when you filter by severity. Do not bypass them; they indicate a hardware or safety condition that requires service.
Compiled from official Felicity user manuals. Always consult your device manual and a qualified technician before performing repairs.