Where can I find the official Felicity LUX-X-48050LG01 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-X-48050LG01 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-X-48050LG01?

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.

What does BATTERY VOLTAGE HIGH mean on LUX-X-48050LG01?

Battery pack voltage above safe operating threshold (BMS protection flag). Fix: BMS protection flag displayed on LCD information page. Restart unit; if persists, return to repair center.

What does BATTERY VOLTAGE LOW mean on LUX-X-48050LG01?

Battery pack voltage below safe operating threshold (BMS protection flag). Fix: BMS protection flag. Charge battery via mains or solar power as soon as possible to avoid over-discharge lockout.

What does BMS TEMPERATURE LOW mean on LUX-X-48050LG01?

BMS internal temperature below safe operating range. Fix: BMS protection flag. Check ambient temperature is not too low.

What does C01 mean on LUX-X-48050LG01?

Battery overvoltage. Fix: Restart the unit, if the error persists, contact the repair center.

What does C02 mean on LUX-X-48050LG01?

Battery undervoltage. Fix: Restart the unit, if the error persists, contact the repair center.

What does C06 mean on LUX-X-48050LG01?

Discharge overcurrent. Fix: Restart the unit, if the error persists, contact the repair center.

What does C09 mean on LUX-X-48050LG01?

Cell overtemperature. Fix: Restart the unit, if the error persists, contact the repair center.

What does C10 mean on LUX-X-48050LG01?

Cell undertemperature. Fix: Restart the unit, if the error persists, contact the repair center.

What does C11 mean on LUX-X-48050LG01?

Abnormal current sampling. Fix: Restart the unit, if the error persists, contact the repair center.

What does C12 mean on LUX-X-48050LG01?

Abnormal output impedance. Fix: Restart the unit, if the error persists, contact the repair center.

What does CELL TEMPERATURE HIGH mean on LUX-X-48050LG01?

Battery cell temperature above safe operating range. Fix: BMS protection flag. Check ambient temperature, ensure ventilation.

What does CELL TEMPERATURE LOW mean on LUX-X-48050LG01?

Battery cell temperature below safe operating range. Fix: BMS protection flag. Check ambient temperature; do not charge below 0 C.

What does CELL VOLTAGE HIGH mean on LUX-X-48050LG01?

Individual cell voltage above safe limit (BMS protection flag). Fix: BMS protection flag. Restart unit; if persists, return to repair center.

What does CELL VOLTAGE LOW mean on LUX-X-48050LG01?

Individual cell voltage below safe limit (BMS protection flag). Fix: BMS protection flag. Charge battery as soon as possible.

What does CURRENT SENSOR ABNORMAL mean on LUX-X-48050LG01?

Current sensor reading is abnormal / sampling failure. Fix: BMS protection flag. Restart unit; if persists, return to repair center.

What does DISCHARGING CURRENT HIGH mean on LUX-X-48050LG01?

Discharging current exceeds maximum allowable value (BMS protection flag). Fix: BMS protection flag. Verify load current within rated limits.

LUX-X-48050LG01

Q: What does BMS TEMPERATURE HIGH mean on LUX-X-48050LG01?

BMS internal temperature above safe operating range. Fix: BMS protection flag. Check ambient temperature, ensure ventilation, operate within 0-55 C charge / -20 to 55 C discharge.

Q: What does C03 mean on LUX-X-48050LG01?

Cell overvoltage. Fix: Restart the unit, if the error persists, contact the repair center.

Battery27 codes

also coversLUX-X-48050LCG01LUX-X-48050LMG01LUX-X-48050LG01M2LUX-X-48050LG01M3LUX-X-48050LG01M4

27 Fault

About the Felicity LUX-X-48050LG01

The Felicity LUX-X-48050LG01 is a Battery unit covered by a shared firmware family that includes 6 variants. The error codes listed below apply to every variant in this family — LUX-X-48050LG01, LUX-X-48050LCG01, LUX-X-48050LMG01, LUX-X-48050LG01M2 and 2 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.

BATTERY VOLTAGE HIGHBATTERY VOLTAGE HIGHFault

Description

Battery pack voltage above safe operating threshold (BMS protection flag).

Recommended fix

BMS protection flag displayed on LCD information page. Restart unit; if persists, return to repair center.

Source:LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 16

BATTERY VOLTAGE LOWBATTERY VOLTAGE LOWFault

Description

Battery pack voltage below safe operating threshold (BMS protection flag).

Recommended fix

BMS protection flag. Charge battery via mains or solar power as soon as possible to avoid over-discharge lockout.

Source:LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 16

BMS TEMPERATURE HIGHBMS TEMPERATURE HIGHFault

Description

BMS internal temperature above safe operating range.

Recommended fix

BMS protection flag. Check ambient temperature, ensure ventilation, operate within 0-55 C charge / -20 to 55 C discharge.

Source:LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 16

BMS TEMPERATURE LOWBMS TEMPERATURE LOWFault

Description

BMS internal temperature below safe operating range.

Recommended fix

BMS protection flag. Check ambient temperature is not too low.

Source:LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 16

C01C01Fault

Description

Battery overvoltage.

Recommended fix

Restart the unit, if the error persists, contact the repair center.

Source:LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 17

C02C02Fault

Description

Battery undervoltage.

Recommended fix

Restart the unit, if the error persists, contact the repair center.

Source:LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 17

C03C03Fault

Description

Cell overvoltage.

Recommended fix

Restart the unit, if the error persists, contact the repair center.

Source:LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 17

C04C04Fault

Description

Cell undervoltage.

Recommended fix

Restart the unit, if the error persists, contact the repair center.

Source:LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 17

C05C05Fault

Description

Charge overcurrent.

Recommended fix

Restart the unit, if the error persists, contact the repair center.

Source:LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 17

C06C06Fault

Description

Discharge overcurrent.

Recommended fix

Restart the unit, if the error persists, contact the repair center.

Source:LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 17

C07C07Fault

Description

MOS overtemperature.

Recommended fix

1. The inner temperature is over the limitation. 2. Check whether the ambient temperature is too high.

Source:LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 17

C08C08Fault

Description

MOS undertemperature.

Recommended fix

1. The internal temperature is lower than the limit range. 2. Check whether the ambient temperature is too low.

Source:LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 17

C09C09Fault

Description

Cell overtemperature.

Recommended fix

Restart the unit, if the error persists, contact the repair center.

Source:LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 17

C10C10Fault

Description

Cell undertemperature.

Recommended fix

Restart the unit, if the error persists, contact the repair center.

Source:LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 17

C11C11Fault

Description

Abnormal current sampling.

Recommended fix

Restart the unit, if the error persists, contact the repair center.

Source:LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 17

C12C12Fault

Description

Abnormal output impedance.

Recommended fix

Restart the unit, if the error persists, contact the repair center.

Source:LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 17

CELL TEMPERATURE HIGHCELL TEMPERATURE HIGHFault

Description

Battery cell temperature above safe operating range.

Recommended fix

BMS protection flag. Check ambient temperature, ensure ventilation.

Source:LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 16

CELL TEMPERATURE LOWCELL TEMPERATURE LOWFault

Description

Battery cell temperature below safe operating range.

Recommended fix

BMS protection flag. Check ambient temperature; do not charge below 0 C.

Source:LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 16

CELL VOLTAGE HIGHCELL VOLTAGE HIGHFault

Description

Individual cell voltage above safe limit (BMS protection flag).

Recommended fix

BMS protection flag. Restart unit; if persists, return to repair center.

Source:LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 16

CELL VOLTAGE LOWCELL VOLTAGE LOWFault

Description

Individual cell voltage below safe limit (BMS protection flag).

Recommended fix

BMS protection flag. Charge battery as soon as possible.

Source:LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 16

CHARGING CURRENT HIGHCHARGING CURRENT HIGHFault

Description

Charging current exceeds maximum allowable value (BMS protection flag).

Recommended fix

BMS protection flag. Verify charge current within rated limits (Recommend 25A/40A; Max continuous 50A/80A; Peak 100A/200A/300A).

Source:LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 16

CURRENT SENSOR ABNORMALCURRENT SENSOR ABNORMALFault

Description

Current sensor reading is abnormal / sampling failure.

Recommended fix

BMS protection flag. Restart unit; if persists, return to repair center.

Source:LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 16

DISCHARGING CURRENT HIGHDISCHARGING CURRENT HIGHFault

Description

Discharging current exceeds maximum allowable value (BMS protection flag).

Recommended fix

BMS protection flag. Verify load current within rated limits.

Source:LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 16

LOW POWERLOW POWERFault

Description

Battery in low-power state, output disabled (SOC LEDs OFF).

Recommended fix

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.

Source:LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 15

Output lossOutput lossFault

Description

Output power loss / no output.

Recommended fix

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.

Source:LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 17

Parallel failedParallel failedFault

Description

Parallel connection failure between battery units.

Recommended fix

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.

Source:LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 17

SOC < 10%SOC < 10%Fault

Description

Low state of charge warning - LED1 flashing (default).

Recommended fix

Charge the battery as soon as possible. The battery should be fully charged at least once per month for accurate SOC calculation.

Source:LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 15

Step-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-X-48050LG01 error codes

Where can I find the official Felicity LUX-X-48050LG01 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-X-48050LG01 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-X-48050LG01?: 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

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