LUX-X-48100LG01
Battery25 codesC01Battery overvoltage.Critical
Total battery pack voltage has exceeded the upper protection threshold.
Restart the unit; if the error persists, contact the repair center.
LUX-X-48100LG01-Litium-Battery-User-Guide.pdf · page 17C02Battery undervoltage.Critical
Total battery pack voltage has dropped below the lower protection threshold.
Restart the unit; if the error persists, contact the repair center.
LUX-X-48100LG01-Litium-Battery-User-Guide.pdf · page 17C03Cell overvoltage.Critical
An individual cell voltage has exceeded its upper protection threshold.
Restart the unit; if the error persists, contact the repair center.
LUX-X-48100LG01-Litium-Battery-User-Guide.pdf · page 17C04Cell undervoltage.Critical
An individual cell voltage has dropped below its lower protection threshold.
Restart the unit; if the error persists, contact the repair center.
LUX-X-48100LG01-Litium-Battery-User-Guide.pdf · page 17C05Charge overcurrent.Critical
Charging current has exceeded the protection limit.
Restart the unit; if the error persists, contact the repair center.
LUX-X-48100LG01-Litium-Battery-User-Guide.pdf · page 17C06Discharge overcurrent.Critical
Discharging current has exceeded the protection limit.
Restart the unit; if the error persists, contact the repair center.
LUX-X-48100LG01-Litium-Battery-User-Guide.pdf · page 17C07MOS overtemperature.Critical
MOSFET (power switch) temperature has exceeded the upper protection limit.
1. The inner temperature is over the limitation. 2. Check whether the ambient temperature is too high.
Reduce ambient temperature and improve ventilation; if the error persists, return to repair center.
LUX-X-48100LG01-Litium-Battery-User-Guide.pdf · page 17C08MOS undertemperature.Critical
MOSFET (power switch) temperature is below the lower protection limit.
1. The internal temperature is lower than the limit range. 2. Check whether the ambient temperature is too low.
Raise ambient temperature above the operating minimum; if the error persists, return to repair center.
LUX-X-48100LG01-Litium-Battery-User-Guide.pdf · page 17C09Cell overtemperature.Critical
A battery cell temperature has exceeded the upper protection limit.
Restart the unit; if the error persists, contact the repair center.
LUX-X-48100LG01-Litium-Battery-User-Guide.pdf · page 17C10Cell undertemperature.Critical
A battery cell temperature has dropped below the lower protection limit.
Restart the unit; if the error persists, contact the repair center.
LUX-X-48100LG01-Litium-Battery-User-Guide.pdf · page 17C11Abnormal current sampling.Warning
Internal current sensor / sampling circuit returned an abnormal reading.
Restart the unit; if the error persists, contact the repair center.
LUX-X-48100LG01-Litium-Battery-User-Guide.pdf · page 17C12Abnormal output impedance.Warning
Detected abnormal output-side impedance (e.g. faulty contactor, bad connection or load anomaly).
Restart the unit; if the error persists, contact the repair center.
LUX-X-48100LG01-Litium-Battery-User-Guide.pdf · page 17C13Parallel failed.Warning
Parallel-mode handshake/operation between battery packs failed.
1. Check whether a single unit is wrongly installed into a parallel system. 2. if error happens during parallel installation, wires may be misconnected.
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-48100LG01-Litium-Battery-User-Guide.pdf · page 17C14Output loss.Critical
Battery pack has lost its output (no DC output detected at the terminals).
Open circuit breaker, blown fuse or other output-path interruption.
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-48100LG01-Litium-Battery-User-Guide.pdf · page 17FAULT-LED-BMSTHBMS temperature high.Critical
FAULT mode indicated by RED LED ON with LED1 ON, LED2 ON, LED3 ON, LED4 OFF: BMS PCB / MOSFET temperature above safe limit.
Inner BMS temperature exceeds limitation; ambient too hot or excessive current.
Reduce ambient temperature, ensure clearance for heat dissipation, reduce current; allow to cool.
LUX-X-48100LG01-Litium-Battery-User-Guide.pdf · page 15FAULT-LED-BMSTLBMS temperature low.Critical
FAULT mode indicated by RED LED ON with LED1 OFF, LED2 OFF, LED3 OFF, LED4 ON: BMS PCB temperature below safe limit.
BMS internal temperature below operating range; ambient too cold.
Move battery to environment within operating temperature range (above 0 degC).
LUX-X-48100LG01-Litium-Battery-User-Guide.pdf · page 15FAULT-LED-BVHBattery voltage high.Critical
FAULT mode indicated by RED LED ON, GREEN LED OFF, with LED1 ON, LED2 OFF, LED3 OFF, LED4 OFF: total battery voltage above safe threshold.
Battery pack voltage above safe threshold.
Stop charging and check charger/inverter charge-voltage settings; allow voltage to recover.
LUX-X-48100LG01-Litium-Battery-User-Guide.pdf · page 15FAULT-LED-BVLBattery voltage low.Critical
FAULT mode indicated by RED LED ON with LED1 OFF, LED2 ON, LED3 OFF, LED4 OFF: total battery voltage below safe threshold.
Battery pack voltage below safe threshold (deeply discharged).
Recharge the battery promptly using AC or PV; do not leave the pack idle in low-power state.
LUX-X-48100LG01-Litium-Battery-User-Guide.pdf · page 15FAULT-LED-CCHCharging current high.Critical
FAULT mode indicated by RED LED ON with LED1 ON, LED2 OFF, LED3 ON, LED4 OFF: charging current above protection limit.
Charger / inverter requesting current above pack limit.
Reduce charge current setting on the inverter/charger to within the pack rating.
LUX-X-48100LG01-Litium-Battery-User-Guide.pdf · page 15FAULT-LED-CSACurrent sensor abnormal.Warning
FAULT mode indicated by RED LED ON with LED1 ON, LED2 ON, LED3 OFF, LED4 ON: internal current sensor reports abnormal reading.
Faulty current sampling circuit / sensor inside BMS.
Restart the unit; if the error persists, return to repair center.
LUX-X-48100LG01-Litium-Battery-User-Guide.pdf · page 15FAULT-LED-CTHCell temperature high.Critical
FAULT mode indicated by RED LED ON with LED1 ON, LED2 OFF, LED3 OFF, LED4 ON: a cell temperature is above safe limit.
Cell temperature exceeds protection threshold.
Stop charging/discharging, allow battery to cool; check ambient temperature and ventilation.
LUX-X-48100LG01-Litium-Battery-User-Guide.pdf · page 15FAULT-LED-CTLCell temperature low.Critical
FAULT mode indicated by RED LED ON with LED1 OFF, LED2 ON, LED3 OFF, LED4 ON: a cell temperature is below safe limit.
Cell temperature below operating range.
Warm the battery to above 0 degC before charging/discharging.
LUX-X-48100LG01-Litium-Battery-User-Guide.pdf · page 15FAULT-LED-CVHCell voltage high.Critical
FAULT mode indicated by RED LED ON with LED1 ON, LED2 ON, LED3 OFF, LED4 OFF: an individual cell voltage exceeds the safe upper limit.
One or more cells over-voltage; possible cell imbalance or charger overvoltage.
Stop charging; verify charger/inverter max charge voltage; allow BMS to balance and recover.
LUX-X-48100LG01-Litium-Battery-User-Guide.pdf · page 15FAULT-LED-CVLCell voltage low.Critical
FAULT mode indicated by RED LED ON with LED1 OFF, LED2 OFF, LED3 ON, LED4 OFF: an individual cell voltage is below the safe lower limit.
Cell undervoltage / over-discharge.
Recharge promptly; if cells fail to recover, return battery to repair center.
LUX-X-48100LG01-Litium-Battery-User-Guide.pdf · page 15FAULT-LED-DCHDischarging current high.Critical
FAULT mode indicated by RED LED ON with LED1 OFF, LED2 ON, LED3 ON, LED4 OFF: discharge current above protection limit.
Load / inverter draws current above pack limit; possible short circuit.
Reduce load; check for short-circuit on output; verify inverter sizing matches battery count.
LUX-X-48100LG01-Litium-Battery-User-Guide.pdf · page 15Compiled from official FelicityESS user manuals. Always consult your device manual and a qualified technician before performing repairs.