This is the complete fault table for the Felicity LUX-S-1600LG01 Battery — all 33 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.
Fault event: battery pack voltage exceeded the upper threshold. Inverter cuts off output and the fault LED is solid on; fault code, icon and ERROR are shown on LCD.
CauseBattery pack voltage exceeded the upper protection threshold — an overcharge condition.
Recommended fixRestart the unit. if the error persists, contact the repair center.
Source:LUX-S-1600LG01.pdf· page 22
Fault event: battery pack voltage below the lower threshold. Inverter cuts off output and fault LED solid on.
CauseBattery pack voltage fell below the lower protection threshold — an over-discharge condition.
Recommended fixRestart the unit. if the error persists, contact the repair center.
Source:LUX-S-1600LG01.pdf· page 22
Fault event: an individual battery cell voltage exceeded its high threshold. Inverter cuts off output and fault LED solid on.
CauseAn individual cell voltage exceeded its upper threshold — imbalance or overcharge of a single cell.
Recommended fixRestart the unit. if the error persists, contact the repair center.
Source:LUX-S-1600LG01.pdf· page 22
Fault event: an individual battery cell voltage fell below its low threshold. Inverter cuts off output and fault LED solid on.
CauseAn individual cell voltage fell below its lower threshold — imbalance or deep discharge of a single cell.
Recommended fixRestart the unit. if the error persists, contact the repair center.
Source:LUX-S-1600LG01.pdf· page 22
Fault event: battery charging current exceeded the maximum allowed value (battery max charge current 40A on LUX-S-1600LG01).
CauseCharging current exceeded the battery's maximum allowed charge current.
Recommended fixRestart the unit. if the error persists, contact the repair center.
Source:LUX-S-1600LG01.pdf· page 22
Fault event: battery discharge current exceeded the maximum allowed value (max discharge current 50A on LUX-S-1600LG01).
CauseDischarge current exceeded the maximum allowed value — the connected loads are drawing more current than the battery can supply.
Recommended fixPower down the inverter, wait 5 minutes for capacitors to discharge, then restart. If the fault recurs immediately or repeatedly, record the exact code and contact your installer or the manufacturer's service line.
Source:LUX-S-1600LG01.pdf· page 22
Fault event: heat sink temperature exceeded its high threshold.
CauseThe heat-sink temperature exceeded its upper protection limit — high ambient temperature, blocked ventilation, or sustained high-power operation.
Recommended fixRestart the unit. if the error persists, contact the repair center.
Source:LUX-S-1600LG01.pdf· page 22
Fault event: heat sink temperature below its low threshold.
CauseThe heat-sink temperature fell below its lower protection limit — the ambient temperature is too low for operation.
Recommended fixRestart the unit. if the error persists, contact the repair center.
Source:LUX-S-1600LG01.pdf· page 22
Fault event: battery cell temperature exceeded its high threshold (operating ranges: charging 0 to 55 deg C, discharging -20 to 55 deg C).
CauseA battery cell temperature exceeded the upper protection limit — possibly excessive ambient temperature, high current, or impaired ventilation.
Recommended fixRestart the unit. if the error persists, contact the repair center.
Source:LUX-S-1600LG01.pdf· page 22
Fault event: battery cell temperature fell below its low threshold.
CauseA battery cell temperature fell below the lower protection limit — the ambient temperature is too low.
Recommended fixRestart the unit. if the error persists, contact the repair center.
Source:LUX-S-1600LG01.pdf· page 22
Fault event: PV input channel 1 current exceeded its limit (max input current 30A per MPPT).
CauseA fault has been detected in the PV input stage — usually a short, ground fault, or isolation failure between the PV array and the inverter chassis. Wet connectors, damaged cable insulation, or moisture in a junction box are common causes.
Recommended fixRestart the unit. if the error persists, contact the repair center.
Source:LUX-S-1600LG01.pdf· page 22
Fault event: PV input channel 2 current exceeded its limit (max input current 30A per MPPT).
CauseA fault has been detected in the PV input stage — usually a short, ground fault, or isolation failure between the PV array and the inverter chassis. Wet connectors, damaged cable insulation, or moisture in a junction box are common causes.
Recommended fixRestart the unit. if the error persists, contact the repair center.
Source:LUX-S-1600LG01.pdf· page 22
Fault event: DC output channel 1 current exceeded its limit (max output current 25A on LUX-S-1600LG01).
CauseCurrent on DC output channel 1 exceeded its limit — the connected load draws more than the output rating, or the output wiring has a short.
Recommended fixPower down the inverter, wait 5 minutes for capacitors to discharge, then restart. If the fault recurs immediately or repeatedly, record the exact code and contact your installer or the manufacturer's service line.
Source:LUX-S-1600LG01.pdf· page 22
Fault event: PV input 1 voltage too high. Maximum allowed PV input voltage is 60Vdc; max PV voltage rating is 95V.
CauseA fault has been detected in the PV input stage — usually a short, ground fault, or isolation failure between the PV array and the inverter chassis. Wet connectors, damaged cable insulation, or moisture in a junction box are common causes.
Recommended fixPlease check the voltage of the solar panel; it should be less than 95V. if the voltage is OK, please contact your installer.
Source:LUX-S-1600LG01.pdf· page 22
Fault event: PV input 2 voltage too high. Maximum allowed PV input voltage is 60Vdc; max PV voltage rating is 95V.
CauseA fault has been detected in the PV input stage — usually a short, ground fault, or isolation failure between the PV array and the inverter chassis. Wet connectors, damaged cable insulation, or moisture in a junction box are common causes.
Recommended fixPlease check the voltage of the solar panel; it should be less than 95V. if the voltage is OK, please contact your installer.
Source:LUX-S-1600LG01.pdf· page 22
Fault event: DC output channel 2 current exceeded its limit.
CauseCurrent on DC output channel 2 exceeded its limit — the connected load draws more than the output rating, or the output wiring has a short.
Recommended fixPower down the inverter, wait 5 minutes for capacitors to discharge, then restart. If the fault recurs immediately or repeatedly, record the exact code and contact your installer or the manufacturer's service line.
Source:LUX-S-1600LG01.pdf· page 22
Fault event: EEPROM (non-volatile memory) error detected on the controller.
CauseInternal EEPROM corruption or hardware failure preventing the controller from reading or writing its stored configuration.
Recommended fixRestart the unit. if the error persists, contact the repair center.
Source:LUX-S-1600LG01.pdf· page 22
Fault event: sampling sensor (current/voltage sensing circuit) error.
CauseThe current/voltage sampling sensor returned abnormal values — an internal sensing-circuit fault.
Recommended fixRestart the unit. if the error persists, contact the repair center.
Source:LUX-S-1600LG01.pdf· page 22
Fault event: output resistance / output stage error detected.
CauseOutput resistance measured outside the normal range — possibly a loose connection, oxidised terminal, or an output-stage fault.
Recommended fixRestart the unit. if the error persists, contact the repair center.
Source:LUX-S-1600LG01.pdf· page 22
Fault event: total output overcurrent condition.
CauseTotal output current exceeded the protection limit — the connected loads exceed the unit's rating, or the output wiring has a short.
Recommended fixRestart the unit. if the error persists, contact the repair center.
Source:LUX-S-1600LG01.pdf· page 22
Fault event: PV input MOSFET short-circuit fault detected.
CauseA fault has been detected in the PV input stage — usually a short, ground fault, or isolation failure between the PV array and the inverter chassis. Wet connectors, damaged cable insulation, or moisture in a junction box are common causes.
Recommended fixRestart the unit. if the error persists, contact the repair center.
Source:LUX-S-1600LG01.pdf· page 22
Fault event: battery relay (contactor) error/failure to open or close as commanded.
CauseCommunication has been lost between the inverter and a peripheral device — typically a battery BMS, smart meter, or external monitoring dongle.
Recommended fixRestart the unit. if the error persists, contact the repair center.
Source:LUX-S-1600LG01.pdf· page 22
If a fault event occurs, the buzzer will keep going (continuous beep).
CauseA fault event is active in the system — the continuous beep is the audible companion to the fault code shown on the LCD, not a separate fault.
Recommended fixIdentify the fault on LCD and apply Fault Code Table remedy. Buzzer alarm can be enabled/disabled in setting program 04.
Source:LUX-S-1600LG01.pdf· page 16
If the system is in a fault event, the Fault LED light will always be on (solid). Indicates a fault condition; check LCD for the numeric fault code.
CauseA fault event is active; the solid Fault LED accompanies the numeric fault code shown on the LCD.
Recommended fixRead fault code/icon/ERROR shown on LCD and follow remedy in Fault Code Table; restart unit and return to repair center if it persists.
Source:LUX-S-1600LG01.pdf· page 16
Three 30A fuses are provided as over-current protection for the battery supply.
CauseA sustained over-current on the battery supply — such as a short circuit or excessive load — has opened one or more of the protective fuses.
Recommended fixIf a fuse opens, investigate and clear the over-current condition; only qualified service persons may replace fuses.
Source:LUX-S-1600LG01.pdf· page 1
Built-in protection against output overload conditions.
CauseThe DC loads connected to the output exceed the unit's rated output power.
Recommended fixReduce the loads connected to the DC output.
Source:LUX-S-1600LG01.pdf· page 4
Built-in over-temperature protection.
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 fixAllow unit to cool; verify ventilation and ambient temperature within -10 to 50 deg C; ensure heat dissipation clearances are observed.
Source:LUX-S-1600LG01.pdf· page 4
Built-in short-circuit protection on the output.
CauseA short circuit on the output wiring or within a connected load.
Recommended fixDisconnect output; check wiring for shorts before re-energising. NEVER cause AC output and DC input short circuited.
Source:LUX-S-1600LG01.pdf· page 4
After the battery system is powered on, alarm information appears on the LCD and the inverter display screen at the same time.
CauseAn active fault in the battery system that requires service intervention.
Recommended fixPlease contact the local distributor.
Source:LUX-S-1600LG01.pdf· page 23
The LCD display of LUX-S-1600LG01 is normal but it cannot charge and discharge; the inverter display screen shows no SOC. Indicates a CAN communication problem between the battery and the inverter.
CauseCommunication has been lost between the inverter and a peripheral device — typically a battery BMS, smart meter, or external monitoring dongle.
Recommended fixCheck whether the CAN communication between LUX-S-1600LG01 and inverter is well connected. if the connection is good, replace the CAN communication cable. if the SOC is still not visible on the inverter display screen, contact the local distributor.
Source:LUX-S-1600LG01.pdf· page 23
Micro energy storage system cannot work; when the DC switch and the POWER are on, the LCD doesn't light up or flash.
CauseThe unit is receiving no usable supply or is in protection shutdown — a deeply discharged battery or an internal supply fault can leave the LCD dark even with the DC switch and POWER on.
Recommended fixPlease consider contacting the local distributor.
Source:LUX-S-1600LG01.pdf· page 23
If a warning event occurs, the buzzer will beep discontinuously.
CauseA warning event is active — the intermittent beeping accompanies the warning code shown on the LCD, not a separate fault.
Recommended fixCheck LCD for warning code; refer to chapter 'Warning Code Table'.
Source:LUX-S-1600LG01.pdf· page 16
If the system is in a warning event, the Fault LED light will flash. if the system works normally the LED is off.
CauseA warning event is active; the flashing Fault LED accompanies the warning code on the LCD and clears automatically once the alarm trigger condition is removed.
Recommended fixCheck LCD for warning code; alarm indication is normal without manual intervention; battery system automatically returns to normal use when the alarm trigger state is removed.
Source:LUX-S-1600LG01.pdf· page 16
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.