LUX-X-48050LG01
Battery27 codesBATTERY VOLTAGE HIGHBATTERY VOLTAGE HIGHFault
Battery pack voltage above safe operating threshold (BMS protection flag).
BMS protection flag displayed on LCD information page. Restart unit; if persists, return to repair center.
LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 16BATTERY VOLTAGE LOWBATTERY VOLTAGE LOWFault
Battery pack voltage below safe operating threshold (BMS protection flag).
BMS protection flag. Charge battery via mains or solar power as soon as possible to avoid over-discharge lockout.
LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 16BMS TEMPERATURE HIGHBMS TEMPERATURE HIGHFault
BMS internal temperature above safe operating range.
BMS protection flag. Check ambient temperature, ensure ventilation, operate within 0-55 C charge / -20 to 55 C discharge.
LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 16BMS TEMPERATURE LOWBMS TEMPERATURE LOWFault
BMS internal temperature below safe operating range.
BMS protection flag. Check ambient temperature is not too low.
LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 16C01C01Fault
Battery overvoltage.
Restart the unit, if the error persists, contact the repair center.
LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 17C02C02Fault
Battery undervoltage.
Restart the unit, if the error persists, contact the repair center.
LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 17C03C03Fault
Cell overvoltage.
Restart the unit, if the error persists, contact the repair center.
LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 17C04C04Fault
Cell undervoltage.
Restart the unit, if the error persists, contact the repair center.
LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 17C05C05Fault
Charge overcurrent.
Restart the unit, if the error persists, contact the repair center.
LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 17C06C06Fault
Discharge overcurrent.
Restart the unit, if the error persists, contact the repair center.
LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 17C07C07Fault
MOS overtemperature.
1. The inner temperature is over the limitation. 2. Check whether the ambient temperature is too high.
LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 17C08C08Fault
MOS undertemperature.
1. The internal temperature is lower than the limit range. 2. Check whether the ambient temperature is too low.
LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 17C09C09Fault
Cell overtemperature.
Restart the unit, if the error persists, contact the repair center.
LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 17C10C10Fault
Cell undertemperature.
Restart the unit, if the error persists, contact the repair center.
LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 17C11C11Fault
Abnormal current sampling.
Restart the unit, if the error persists, contact the repair center.
LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 17C12C12Fault
Abnormal output impedance.
Restart the unit, if the error persists, contact the repair center.
LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 17CELL TEMPERATURE HIGHCELL TEMPERATURE HIGHFault
Battery cell temperature above safe operating range.
BMS protection flag. Check ambient temperature, ensure ventilation.
LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 16CELL TEMPERATURE LOWCELL TEMPERATURE LOWFault
Battery cell temperature below safe operating range.
BMS protection flag. Check ambient temperature; do not charge below 0 C.
LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 16CELL VOLTAGE HIGHCELL VOLTAGE HIGHFault
Individual cell voltage above safe limit (BMS protection flag).
BMS protection flag. Restart unit; if persists, return to repair center.
LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 16CELL VOLTAGE LOWCELL VOLTAGE LOWFault
Individual cell voltage below safe limit (BMS protection flag).
BMS protection flag. Charge battery as soon as possible.
LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 16CHARGING CURRENT HIGHCHARGING CURRENT HIGHFault
Charging current exceeds maximum allowable value (BMS protection flag).
BMS protection flag. Verify charge current within rated limits (Recommend 25A/40A; Max continuous 50A/80A; Peak 100A/200A/300A).
LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 16CURRENT SENSOR ABNORMALCURRENT SENSOR ABNORMALFault
Current sensor reading is abnormal / sampling failure.
BMS protection flag. Restart unit; if persists, return to repair center.
LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 16DISCHARGING CURRENT HIGHDISCHARGING CURRENT HIGHFault
Discharging current exceeds maximum allowable value (BMS protection flag).
BMS protection flag. Verify load current within rated limits.
LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 16LOW POWERLOW POWERFault
Battery in low-power state, output disabled (SOC LEDs OFF).
Charge the battery as soon as possible when main power or solar energy is available. Note: Over-discharged pack may not be reactivated by AC/PV cable and may require special charging activation.
LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 15Output lossOutput lossFault
Output power loss / no output.
1. 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.
LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 17Parallel failedParallel failedFault
Parallel connection failure between battery units.
1. Please check if single unit is installed to 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.
LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 17SOC < 10%SOC < 10%Fault
Low state of charge warning - LED1 flashing (default).
Charge the battery as soon as possible. The battery should be fully charged at least once per month for accurate SOC calculation.
LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 15Compiled from official FelicityESS user manuals. Always consult your device manual and a qualified technician before performing repairs.