About the Felicity LUX-S-1600LG01
The Felicity LUX-S-1600LG01 is a Battery unit. The 33 error codes listed below are the complete fault catalog for this device, compiled from the official Felicity user manual.
LUX-S-1600LG01
Battery33 codes 31 Fault 2 Warning
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.
1Battery voltage is too high.Fault
Description
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.
Recommended fix
Restart the unit. if the error persists, contact the repair center.
Source:
LUX-S-1600LG01.pdf · page 222Battery voltage is too low.Fault
Description
Fault event: battery pack voltage below the lower threshold. Inverter cuts off output and fault LED solid on.
Recommended fix
Restart the unit. if the error persists, contact the repair center.
Source:
LUX-S-1600LG01.pdf · page 223Cell voltage is too high.Fault
Description
Fault event: an individual battery cell voltage exceeded its high threshold. Inverter cuts off output and fault LED solid on.
Recommended fix
Restart the unit. if the error persists, contact the repair center.
Source:
LUX-S-1600LG01.pdf · page 224Cell voltage is too low.Fault
Description
Fault event: an individual battery cell voltage fell below its low threshold. Inverter cuts off output and fault LED solid on.
Recommended fix
Restart the unit. if the error persists, contact the repair center.
Source:
LUX-S-1600LG01.pdf · page 225Over charge current.Fault
Description
Fault event: battery charging current exceeded the maximum allowed value (battery max charge current 40A on LUX-S-1600LG01).
Recommended fix
Restart the unit. if the error persists, contact the repair center.
Source:
LUX-S-1600LG01.pdf · page 226Over discharge current.Fault
Description
Fault event: battery discharge current exceeded the maximum allowed value (max discharge current 50A on LUX-S-1600LG01).
Recommended fix
Reduce the loads.
Source:
LUX-S-1600LG01.pdf · page 227Heat sink temperature is too high.Fault
Description
Fault event: heat sink temperature exceeded its high threshold.
Recommended fix
Restart the unit. if the error persists, contact the repair center.
Source:
LUX-S-1600LG01.pdf · page 228Heat sink temperature is too low.Fault
Description
Fault event: heat sink temperature below its low threshold.
Recommended fix
Restart the unit. if the error persists, contact the repair center.
Source:
LUX-S-1600LG01.pdf · page 229Cell temperature is too high.Fault
Description
Fault event: battery cell temperature exceeded its high threshold (operating ranges: charging 0 to 55 deg C, discharging -20 to 55 deg C).
Recommended fix
Restart the unit. if the error persists, contact the repair center.
Source:
LUX-S-1600LG01.pdf · page 2210Cell temperature is too low.Fault
Description
Fault event: battery cell temperature fell below its low threshold.
Recommended fix
Restart the unit. if the error persists, contact the repair center.
Source:
LUX-S-1600LG01.pdf · page 2211PV1 overcurrent.Fault
Description
Fault event: PV input channel 1 current exceeded its limit (max input current 30A per MPPT).
Recommended fix
Restart the unit. if the error persists, contact the repair center.
Source:
LUX-S-1600LG01.pdf · page 2212PV2 overcurrent.Fault
Description
Fault event: PV input channel 2 current exceeded its limit (max input current 30A per MPPT).
Recommended fix
Restart the unit. if the error persists, contact the repair center.
Source:
LUX-S-1600LG01.pdf · page 2213Output1 overcurrent.Fault
Description
Fault event: DC output channel 1 current exceeded its limit (max output current 25A on LUX-S-1600LG01).
Recommended fix
Reduce the loads.
Source:
LUX-S-1600LG01.pdf · page 2214PV1 voltage is too high.Fault
Description
Fault event: PV input 1 voltage too high. Maximum allowed PV input voltage is 60Vdc; max PV voltage rating is 95V.
Recommended fix
Please 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 2215PV2 voltage is too high.Fault
Description
Fault event: PV input 2 voltage too high. Maximum allowed PV input voltage is 60Vdc; max PV voltage rating is 95V.
Recommended fix
Please 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 2216Output2 overcurrent.Fault
Description
Fault event: DC output channel 2 current exceeded its limit.
Recommended fix
Reduce the loads.
Source:
LUX-S-1600LG01.pdf · page 2217Eeprom is error.Fault
Description
Fault event: EEPROM (non-volatile memory) error detected on the controller.
Recommended fix
Restart the unit. if the error persists, contact the repair center.
Source:
LUX-S-1600LG01.pdf · page 2218SampSensor is error.Fault
Description
Fault event: sampling sensor (current/voltage sensing circuit) error.
Recommended fix
Restart the unit. if the error persists, contact the repair center.
Source:
LUX-S-1600LG01.pdf · page 2219OutputRes is error.Fault
Description
Fault event: output resistance / output stage error detected.
Recommended fix
Restart the unit. if the error persists, contact the repair center.
Source:
LUX-S-1600LG01.pdf · page 2220Output overcurrent.Fault
Description
Fault event: total output overcurrent condition.
Recommended fix
Restart the unit. if the error persists, contact the repair center.
Source:
LUX-S-1600LG01.pdf · page 2221PV Mos Short.Fault
Description
Fault event: PV input MOSFET short-circuit fault detected.
Recommended fix
Restart the unit. if the error persists, contact the repair center.
Source:
LUX-S-1600LG01.pdf · page 2222Batter Relay Error.Fault
Description
Fault event: battery relay (contactor) error/failure to open or close as commanded.
Recommended fix
Restart the unit. if the error persists, contact the repair center.
Source:
LUX-S-1600LG01.pdf · page 22BUZZER_FAULTBuzzer continuous (fault event).Fault
Description
If a fault event occurs, the buzzer will keep going (continuous beep).
Recommended fix
Identify 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 16BUZZER_WARNINGBuzzer discontinuous (warning event).Warning
Description
If a warning event occurs, the buzzer will beep discontinuously.
Recommended fix
Check LCD for warning code; refer to chapter 'Warning Code Table'.
Source:
LUX-S-1600LG01.pdf · page 16FAULT_LEDFault LED indicator (solid on) - system fault event.Fault
Description
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.
Recommended fix
Read 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 16FAULT_LED_FLASHFault LED flashing - system warning event.Warning
Description
If the system is in a warning event, the Fault LED light will flash. if the system works normally the LED is off.
Recommended fix
Check 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 16PROT_FUSE_30ABattery supply over-current fuse (3 x 30A).Fault— protection
Description
Three 30A fuses are provided as over-current protection for the battery supply.
Recommended fix
If a fuse opens, investigate and clear the over-current condition; only qualified service persons may replace fuses.
Source:
LUX-S-1600LG01.pdf · page 1PROT_OVERLOADOverload protection.Fault— protection
Description
Built-in protection against output overload conditions.
Recommended fix
Reduce the loads connected to the DC output.
Source:
LUX-S-1600LG01.pdf · page 4PROT_OVERTEMPOver temperature protection.Fault— protection
Description
Built-in over-temperature protection.
Recommended fix
Allow 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 4PROT_SHORT_CIRCUITShort circuit protection.Fault— protection
Description
Built-in short-circuit protection on the output.
Recommended fix
Disconnect output; check wiring for shorts before re-energising. NEVER cause AC output and DC input short circuited.
Source:
LUX-S-1600LG01.pdf · page 4TS_ALARM_ON_LCD_AND_INVERTERAlarm information on LCD and inverter after power-on.Fault
Description
After the battery system is powered on, alarm information appears on the LCD and the inverter display screen at the same time.
Recommended fix
Please contact the local distributor.
Source:
LUX-S-1600LG01.pdf · page 23TS_NO_CHARGE_DISCHARGELCD normal but cannot charge/discharge; no SOC on inverter.Fault
Description
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.
Recommended fix
Check 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 23TS_NO_LCDLCD does not light or flash with DC switch and POWER on.Fault
Description
Micro energy storage system cannot work; when the DC switch and the POWER are on, the LCD doesn't light up or flash.
Recommended fix
Please consider contacting the local distributor.
Source:
LUX-S-1600LG01.pdf · page 23Step-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-S-1600LG01 error codes
- Where can I find the official Felicity LUX-S-1600LG01 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-S-1600LG01 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-S-1600LG01?
- 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.