LUX-Y-48100HG01

Battery34 codes
also coversLUX-Y-48100HCG01LUX-Y-48100HMG01LUX-Y-48100HR13G01LUX-Y-48100HR9G01
5 Critical 10 Fault 19 Warning

About the Felicity LUX-Y-48100HG01

The Felicity LUX-Y-48100HG01 is a Battery unit covered by a shared firmware family that includes 5 variants. The error codes listed below apply to every variant in this family — LUX-Y-48100HG01, LUX-Y-48100HCG01, LUX-Y-48100HMG01, LUX-Y-48100HR13G01 and 1 others. If your unit's exact model number isn't shown in the title but is listed in the "also covers" tags, this is the correct reference page.

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.

01High Battery Voltage.Warning
Description

Battery pack voltage exceeded the upper threshold.

Recommended fix

Stop charging.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 20
02Low Battery Voltage.Warning
Description

Battery pack voltage fell below the lower threshold.

Recommended fix

Stop discharging.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 20
03High Cell Voltage.Warning
Description

Individual cell voltage exceeded the upper threshold.

Recommended fix

Stop charging.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 20
04Low Cell Voltage.Warning
Description

Individual cell voltage fell below the lower threshold.

Recommended fix

Stop discharging.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 20
05High Charging Current.Warning
Description

Charging current exceeded the upper threshold.

Recommended fix

Reduce charging current.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 20
06High Discharging Current.Warning
Description

Discharging current exceeded the upper threshold.

Recommended fix

Reduce discharging current.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 20
07High BMS Temperature.Warning
Description

BMS temperature is too high.

Recommended fix

Stop charging and discharging, wait for the temperature to drop.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 20
08Low BMS Temperature.Warning
Description

BMS temperature is too low.

Recommended fix

Wait for temperature rise.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 20
09High Cell Temperature.Warning
Description

Cell temperature is too high.

Recommended fix

Stop charging and discharging, wait for the temperature to drop.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 20
10Low Cell Temperature.Warning
Description

Cell temperature is too low.

Recommended fix

Wait for temperature rise.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 20
11AFE Fault.Fault
Description

Analog Front End (AFE) measurement fault detected by the BMS.

Recommended fix

Restart, if the fault still exists, contact our engineer.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 20
12Soft Start Failed.Fault
Description

Pre-charge / soft-start sequence failed during power-up.

Recommended fix

Restart, if the fault still exists, contact our engineer.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 20
13Slave Communication Failure.Fault
Description

Master-to-slave communication failure between BMS units.

Recommended fix

Check for poor contact of the communication line.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 20
14Low Output Impedance.Fault
Description

Output impedance below the expected threshold.

Recommended fix

Restart, if the fault still exists, contact our engineer.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 20
15Slave Version Fault.Fault
Description

Slave BMS firmware version mismatch.

Recommended fix

Contact our engineer to upgrade the program.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 20
16Slave Device Version Fault.Fault
Description

Slave device version fault.

Recommended fix

Contact our engineer to upgrade the program.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 20
17Parallel Fault.Fault
Description

Fault in parallel battery configuration.

Recommended fix

1. Please check if the number of parallel battery slave controls is the same. 2. Please check if a single unit is installed in a parallel system. 3. if this error occurs during parallel installation, please check the wiring. if they are connected correctly, please install them in parallel first and then restart the device. 4. if the problem persists, please contact the installation personnel.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 20
18Relay Adhesion Fault.Critical
Description

Main relay contacts have welded/stuck (relay adhesion).

Recommended fix

Restart, if the fault still exists, contact our engineer.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 20
ALARM_LEDAlarm LED Lit.Fault
Description

Alarm LED indicates the fault status of the battery, which lights up when the fault occurs.

Cause

A fault condition has been detected by the BMS (refer to Fault Code Table for specific code).

Recommended fix

Check LCD touch screen for the specific fault code and follow the corresponding treatment measure.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 18
BAT_PROT_INTERNAL_SHORT_CIRCUITBattery Internal Short Circuit Protection.Critical
Description

Battery protection: Internal short circuit detected.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 7
BAT_PROT_OVER_CURRENTBattery Over Current Protection.Warning
Description

Battery protection: Over current condition detected.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 7
BAT_PROT_OVER_TEMPBattery Over Temperature Protection.Warning
Description

Battery protection: Over temperature condition detected.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 7
BAT_PROT_OVER_VOLTAGEBattery Over Voltage Protection.Warning
Description

Battery protection: Over voltage condition detected.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 7
BAT_PROT_UNDER_VOLTAGEBattery Under Voltage Protection.Warning
Description

Battery protection: Under voltage condition detected.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 7
INV_PROT_EXTERNAL_SHORT_CIRCUITExternal Short Circuit Protection.Critical
Description

Inverter interface protection: External short circuit detected.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 7
INV_PROT_INRUSH_CURRENTInrush Current Protection.Warning
Description

Inverter interface protection: In rush current condition detected.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 7
INV_PROT_OVER_CURRENTInverter Interface Over Current Protection.Warning
Description

Inverter interface protection: Over current condition detected at inverter interface.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 7
INV_PROT_OVER_TEMPInverter Interface Over Temperature Protection.Warning
Description

Inverter interface protection: Over temperature detected.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 7
INV_PROT_OVER_VOLTAGEInverter Interface Over Voltage Protection.Warning
Description

Inverter interface protection: Over voltage condition detected at inverter interface.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 7
INV_PROT_REVERSE_POLARITY_GROUND_FAULTReverse Polarity Ground Fault Protection.Critical
Description

Inverter interface protection: Reverse polarity ground fault detected.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 7
STATUS_LED_OFFStatus LED Not On.Warning
Description

Status LED indicates the operating status of the battery, which is always on when running normally. if not on, battery is not running normally.

Cause

Battery system is not in normal running state.

Recommended fix

Check power switch, breaker, and review LCD for fault information.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 18
TS_ALARM_ON_LCD_AND_INVERTERAlarm Information on LCD and Inverter.Fault
Description

After the battery system is powered on, alarm information is displayed on the LCD and inverter display screen at the same time.

Recommended fix

Please contact the local distributor.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 21
TS_LCD_NO_DISPLAYLCD Does Not Light Up or Flash.Critical
Description

Battery system cannot work; when DC switch on and POWER on, the LCD doesn't light up or flash.

Cause

Battery system failure preventing power-up.

Recommended fix

Please consider contact the local distributor.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 21
TS_NO_SOC_ON_INVERTERCannot Charge/Discharge - No SOC on Inverter.Fault
Description

The LCD display of LUX-Y-48100HG01 is normal, but it cannot charge and discharge. Inverter display screen shows no SOC.

Cause

CAN communication between LUX-Y-48100HG01 and inverter is not connected or cable is faulty.

Recommended fix

Check whether the CAN communication between LUX-Y-48100HG01 to inverter is well connected. if the connection is good, please replace a CAN communication cable. if the SOC is still not visible on the inverter display screen, please contact the local distributor.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 21

Step-by-step troubleshooting checklist

  1. 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. 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. 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. 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. 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-Y-48100HG01 error codes

Where can I find the official Felicity LUX-Y-48100HG01 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-Y-48100HG01 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-Y-48100HG01?
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.

Common codes on this device

11
AFE Fault.
04
Low Cell Voltage.
05
High Charging Current.
06
High Discharging Current.
07
High BMS Temperature.
10
Low Cell Temperature.
16
Slave Device Version Fault.
17
Parallel Fault.
01
High Battery Voltage.
02
Low Battery Voltage.
03
High Cell Voltage.
08
Low BMS Temperature.

Compiled from official Felicity user manuals. Always consult your device manual and a qualified technician before performing repairs.