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Error code reference
LG Refrigerator Error Codes
303 error codes documented with diagnostic procedures.
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01Test Mode 1 display indicator02Test Mode 2 display indicator1Freezer sensor failure (open or short circuit)1-2-3-4-5Control panel lights blinking sequentially indicates the refrigerator is in store demo…10Abnormal Freezing BLDC Fan Motor11Abnormal Cooling BLDC Fan Motor1SFreezer sensor failure (short or open circuit detected by MICOM).2Defrosting failure3Faulty room temperature sensor (in the main PCB)4Poor defrost5Failure of Defrost Mode6Cooling BLDC motor abnormal7Abnormal cooling BLDC fan motor8Abnormal Defrost88/8EInsufficient cooling in lower part due to lower part interior sensor line cut or lower…88/E8Insufficient cooling or weak cooling/overcooling malfunction due to cut wire or short…88/EEInsufficient cooling in lower part due to lower part interior sensor line cut or lower…8E/88Insufficient cooling in upper part due to upper part interior sensor line cut or upper…9Abnormal icemaker sensoraSAmbient (room temperature) sensor failureCCooling FAN BLDC Motor FailureC-FANCooling (condenser) fan motor (BLDC) abnormalC-FAN errorM/C room fan motor failureC1Cycle abnormal or defectiveCdCommunication error between Main MICOM and Compressor Driver MICOM on Main PCB.CFAbnormal cooling BLDC motorCF EAbnormality of BLDC fan motor for mechanical room (condenser fan); caused when feedback…CH EHigh side cycle leakage detected by high side refrigerant leak, restriction, bad…CL ELow side cycle leakage detected by low side refrigerant leak, bad compressor, or long…COCommunication ErrorCO 1Communication error between Top Display and Dispenser Display PCBs.CO ECommunication error between Micom of Main PCB and Display MicomCommunication errorCommunication failure between main MICOM and linear drive MICOMComp Tx ErrorCompressor communication errorCpLinear compressor failed starting.CSEMulti-use room (Magic room) temperature sensor open or short circuit.CurrentCompressor circuit over-current error (overload protection)dWater-tank sensor failureD sensorDefrost sensor abnormalD-HeaterDefrost heater errord1Upper compartment defrosting sensor is disconnected or shorted.D2Display for A/S forced defrost mode (service defrost mode active, not a fault).dEDisplay Communication error-communication failure between main PCB and display PCB.Defrost errorAbnormal defrostdFDefrosting errordHFailure of defrost modedH EDefrost Heater ErrordH FPoor defrosting error; during 2 consecutive cycles the defrosting sensor did not reach…dH RPoor Refrigerator DefrostdPSingle motor damper failuredrRefrigerator door switch defectivedSDefrost sensor failure (short or open)dS EDefrost sensor error-the defrost temperature sensor circuit is shorted, open, or out of…dS FDefrost sensor error-the defrost temperature sensor has a short, open, or out-of-range…dS rRefrigerator defrost sensor error-the refrigerator defrost sensor circuit is open or…ERefrigerator sensor failureE C1Communication error between top display PCB and dispenser micom.E CFBLDC fan motor error for condenser (mechanical room); no feedback signal received for…E CHHigh side cycle leakage detected-may indicate refrigerant leak, restriction, bad…E CLLow side cycle leakage detected-may indicate refrigerant leak, bad compressor, or…E COCommunication error between Micom of Main PCB and Display Micom, caused by poor…E CSConvertible (pantry) sensor error-short or disconnection of the convertible drawer…E FFBLDC fan motor error for freezer; no feedback signal received for over 65 seconds during…E FSFreezer sensor error-the freezer temperature sensor has a short, open, or out-of-range…E gFFlow meter/sensor defect; when ice does not drop even when I/M Test S/W is pressed…E HSHumidity sensor error caused by short or disconnection of the humidity sensor.E IDAbnormal freezer room icemaker tray sensor-icemaker tray sensor short or open circuit.E IFAbnormality of BLDC fan motor for ice making; caused when feedback signal is not received…E ISIce maker sensor error due to short or disconnection of sensors related to ice maker…E ItTwisting ice maker error due to electric system error such as motor, gear, Hall IC, or…E IUAbnormal freezer room icemaker kit-ice does not drop, or electrical system error in…E lFAbnormality of BLDC fan motor for ice makingE OdAbnormal Wi-Fi modem; communication error between display and Wi-Fi modem.E r2Refrigerator sensor 2 errorE rFAbnormality of BLDC fan motor for refrigeratorE rSRefrigerator sensor error-the refrigerator temperature sensor has a short, open, or…E rtRoom (ambient) temperature sensor errorE SdCommunication error between Display PCB Micom and Sub PCB Micom.E SSShort or disconnection of the sensor about ice maker (icing sensor, ice maker sensor).E-dHDefrosting malfunctionE-dSDefrost sensor malfunctionE-gSRoom temperature sensor malfunctionE1Left compartment sensor (R1) failureE1+E2Communication error between main PCB and display PCBE2Right compartment sensor (R2) failureE3Outside temperature sensor error (located on display); all LEDs on the right compartment…E4F-SENSOR (freezer compartment sensor) open circuit or short circuit.E5M-SENSOR (multi/magic room sensor) open circuit or short circuit.E6M-EVA-SENSOR (multi/magic room evaporator sensor) open circuit or short circuit.E8/88Insufficient cooling or weak cooling/overcooling malfunction due to upper part cooling…EC2Communication errorErFailure of outside (ambient) temperature sensorEr (Ice Maker Unit)Poor motor or Hall IC within ice-maker unit, snapping/short-circuit of lead wire, or poor…Er (Ice Removal Sensor)Snapping or short-circuit of ice-making sensor; displayed during LED check only.Er (outside sensor)Snapping or short-circuit of outside temperature perceiving sensorEr (rS - sensor 2)Snapping or short-circuit of refrigerator sensor 2.Er (rS note2)Snapping or short-circuit of refrigerator sensor 2.Er 1Refrigerator sensor failureEr 10Communication error between main PCB and display PCB (continuous information exchange…Er 11Abnormal ice-maker sensorEr 12Abnormal ice-maker unitEr 3Abnormal refrigerator sensor 2 (middle part of refrigerator compartment)Er 4Abnormal defrost sensorEr 5Communication error between main PCB and display PCB (continuous information exchange…Er 6Abnormal BLDC cooling fan motorEr 7Freezer fan motor BLDC locked or faulty (no position signal for more than 115 seconds).Er 8Abnormal ice maker sensorEr 9Defrost malfunctionEr CFFailure of BLDC fan motor at machine roomEr COCommunication failureEr Co2Communication error between Micom of Sub PCB and Display Micom due to poor communication…Er CSConvertible room sensor error caused by short or disconnection of the convertible room…Er dFAbnormal DefrostEr dHPoor DefrostingEr dPAbnormal electronic single (stepping) motor damper (faulty damper motor, lead wire of…Er dSAbnormal Defrost SensorEr F2Refrigerator sensor 2 errorEr FFFailure of BLDC fan motor at freezing roomEr FSAbnormal Freezer SensorEr gFFlow meter (sensor) defect caused by error of flow meter or water input or low water…Er HSHumidity sensor error-short or disconnection of humidity sensor (sub error, not displayed…Er IdFreezer shelf icing sensor error caused by short or disconnection of the freezer shelf…Er IFIcing fan error-abnormality of BLDC fan motor for ice making; caused when feedback signal…Er IMAbnormal Icemaker UnitEr IM2Ice maker ice-making sensor not functioningEr IM3Ice maker equipment not functioningEr ISIcing sensor error caused by short or disconnection of the icemaker-related sensor (icing…Er ItIce maker kit defect caused by other electrical system errors such as motor, gear, Hall…Er IUFreezer shelf ice maker kit defect caused by electrical system error such as motor, gear…Er lFIce maker BLDC fan motor anomalyEr ltIce maker equipment defectEr r1Refrigerator sensor 1 (upper part in refrigerator compartment) short or open circuit…Er r2Refrigerator sensor 2 error (secondary error) caused by short or disconnection of…Er rFAbnormality of BLDC fan motor for refrigeratorEr rSRefrigerator sensor (R1-sensor) abnormalEr rS (sensor 2)Refrigerator sensor 2 failureEr RS1Abnormal Refrigerator Sensor (1)Er RS2Abnormal Refrigerator Sensor (2)Er rtAbnormal Room Temperature SensorEr SSRoom temperature sensor failure (indicated only in checking display, not on failure…Er-IKIce maker kit errorError1Freezer sensor abnormalError10Water tank sensor abnormalError11Ice maker sensor abnormalError12Ice maker unit abnormalError2Refrigerator sensor R1 abnormal (upper part of refrigerator compartment)Error3Refrigerator sensor R2 abnormal (lower part of refrigerator compartment)Error4Defrost sensor abnormalError5Defrost failureError6Freezer BLDC fan motor abnormalError7Cooling BLDC fan motor abnormalError8Communication abnormalError9Ambient temperature sensor abnormalESWater, Crushed ice, or Cube ice dispenser button errorFFreezer FAN BLDC Motor FailureF dHPoor defrostingF dSF-Room defrost sensor error (covers both Defrost Sensor 1 and Defrost Sensor 2)F IFAbnormality of BLDC fan motor for ice makingF sensorFreezer sensor abnormalF-FANFreezer fan motor (BLDC) abnormalF-FAN errorFreezer room BLDC fan motor is locked or defectiveF1Trouble code indicated on Bar-LED or Dot-LED display for freezer temperature indicatorF1 F3Abnormal freezer BLDC fan motorF1 F4Abnormal cooling BLDC fan motorF1+F2+F3+F4+F5Poor communication between main PCB and display PCBF1+F3Failure of single motor damperF1F2Abnormal electronic single motor damperF2Trouble code indicated on the freezing temperature indicator LED in the refrigerator…F2 F3Condenser fan error displayed on panel.F2 F3 F4 F5Poor defrosting / defrost heater error; defrost sensor has not exceeded +41°F (5°C) after…F2 F4Abnormal cooling BLDC fan motorF2 F5Freezer fan error displayed on panel (BLDC fan motor abnormality).F2+F4Poor defrosting at upper compartmentF3Defrosting function is abnormalF3 F4Faulty defrostF3+F5Poor defrosting at middle compartmentF4Trouble code indicated on the freezing temperature indicator LED in the refrigerator…F5Failure of middle compartment defrosting sensorFCT0Compressor PCB parts defect (piston overaction)FDFreezer defrost sensor disconnection or short circuit (displays 'Lo' for disconnection…FEUnbalance errorFFAbnormal freezing BLDC motorFF EAbnormality of BLDC fan motor for freezer; caused when feedback signal is not received…Fr CFMachine room (condenser) fan motor errorfSFreezer compartment sensor failureFS EFreezer sensor errorFUCOCycle ErrorFUECycle errorgFCooling fan motor failure (locked rotor condition detected).gF EFlow meter (sensor) defect caused by error of flow meter, water input, low water…HDefrosting failureH1Poor defrosting at upper compartmentH2Poor defrosting at middle compartmentHIAmbient temperature is above 50°C, displayed on outside temperature area of LCD.HSHumidity sensor abnormalHS EError displayed on control panel (remains displayed after 3 hours; cannot be cleared by…I/M KitIce maker unit failureI/M sensorIce maker sensor abnormalICE-KitIce maker kit errorICE-SensorIce maker sensor errorIcemaker Kit ErrorEjector blades have not reached the park position after 18 minutes from start of harvest…Icemaker LED all blinkingIcemaking sensor malfunctionIcemaker LED pattern - kit malfunctionIcemaker kit malfunctionIcemaker Sensor ErrorIcemaking sensor malfunctionIcemaker Sensor MalfunctionIcemaking sensor open or short-circuited wire indicated on ice maker water supply control…Icemaking Sensor malfunctionIcemaker sensor has an open or short-circuited wire.iDIce room (IR) sensor disconnection or short circuit (displays 'Lo' for disconnection…Id EAbnormal freezer room icemaker tray sensor caused by icemaker tray sensor short or open…IEInlet valve errorIF EAbnormality of BLDC fan motor for ice making; caused when feedback signal is not received…IPMCompressor PCB IPM (Intelligent Power Module) faultISAbnormal ice maker sensorIS EIcing sensor error caused by short or disconnection of the ice maker sensor (icing sensor…ItAbnormal Ice Maker Unit-wire open, short circuit, loose connection, defective Hall IC, or…It EIce maker kit defectIU EAbnormal freezer room icemaker kit error caused by motor, gear, Hall IC, operation…L/PistonCompressor piston lock detectedL1Top sensor disconnection or short-circuit detected.L1 L2Single motor damper defectL1 L3Room temperature sensor disconnection or short-circuit detected.L2Bottom sensor disconnection or short-circuit detected.L3Defrosting sensor disconnection or short-circuit detected; defrosting is disabled.L4Defrosting failureLEMotor locked errorLED 1 blinkAD Offset Error (FCT0 Error)LED 1 timeAD-offset Error on compressor PCBLED 2 blinksStroke TripLED 3 blinksNo Connect TripLED 5 blinksPiston Lock TripLED 6 blinksActivation current overcurrent errorLED 6 timesCircuit over-current error on compressor PCBLED 7 blinksIPM faultLED 7 timesPCB defect (IPM fault)LED 8 blinksCommunication error between compressor controller and refrigerator temperature control.LoAmbient temperature is below -10°C, displayed on outside temperature area of LCD.LSLower compartment (K3) sensor is disconnected or shorted.M-EVA sensor failureFailure of Opti zone Eva sensor due to cut or short circuit wire; all display LEDs are on…M-Eva sensor failure (MEAT OPTI off)Failure of Opti zone Eva sensor due to cut or short circuit wire; indicated by all…Miracle Zone sensor errorFailure of Miracle Zone sensor due to cut or short circuit wire (BEST model only).OWi-Fi PCB AbnormalOdWiFi PCB abnormalOd EAbnormal Wi-Fi modem communication error between Display and Wi-Fi modem caused by poor…OEOverflow errorOFFFailure of fan motor at mechanic (condenser) roomOpti zone Eva sensor failureFailure of Opti zone evaporator sensor due to cut or short circuit wire; indicated by all…Opti zone sensor failureFailure of Opti zone sensor due to cut or short circuit wire; indicated by all display…Opti zone sensor failure (GREEN OPTI off)Failure of Opti zone sensor due to cut or short circuit wire; indicated by all display…PEWater level sensor errorPoAbnormal supplied power voltage.rTemperature Sensor Errorr dHRefrigerator defrosting errorR dSRefrigerator defrost sensor error caused by short or disconnection of the defrost sensor…R-EVA sensor failureFailure of Refrigerator Eva sensor due to cut or short circuit wire; all display LEDs are…R-Eva sensor failure (R.temp display off)Failure of Refrigerator Eva sensor due to cut or short circuit wire; indicated by all…R0Refrigerator sensor failureR0 ON, R1-R4 OFFDefrost sensor failureR0 R1 ON, R2-R4 OFFRefrigerator sensor failureR0 R1 R2 ON, R3 R4 OFFDefrost operation failureR1Cut or short-circuited wire of refrigerator (R) sensor on the control box of the…R1 R2 R3 ONAmbient (RT) sensor open or short circuit.R1 R2 R3 R4Faulty R sensorR1 R2 R3 R4 (blinking pattern 2)Faulty D sensorR1 R2 R3 R4 (blinking pattern 3)Defrost problemR1 R3 ONRefrigerator sensor open or short circuit.R1 sensorRefrigerator sensor (1) abnormalR2Faulty defrosting sensor; cut or short-circuited wire of defrosting sensor; compressor…r2 ERefrigerator sensor 2 error-the second refrigerator temperature sensor has a short, open…R2 R3Defrosting problemR2 R3 R4 R5 ONFreezer fan motor locked (F-FAN LOCKED).R2 R4Freezer fan locked (F-FAN LOCKED).R2 R4 ONDefrost sensor open or short circuit.R2 sensorRefrigerator sensor (2) abnormalR2R3R4R5 - all OFF except R2 ONRefrigerator sensor open or short circuit.R2R3R4R5 - all OFF except R3 ONDefrost sensor open or short circuit.R2R3R4R5 - all OFF except R4 ONAmbient (RT) sensor open or short circuit.R2R3R4R5 - R2 and R3 ONDefrost time lasted more than one hour and the defrost sensor never reached 10°C (50°F).R2R3R4R5 - R2 and R4 ONFreezer fan locked.R3Defrosting failure; cut or disconnected wire of defrosting heater or temperature fuse…R3 R4 R5 ONDefrost problemR4Failure of Defrost modeR4 R5Defrosting malfunctionR5Failure of Fan Motor at freezer compartmentrDRefrigerator defrost sensor disconnection or short circuit (displays 'Lo' for…Refrigerator Eva sensor failureFailure of Refrigerator evaporator sensor due to cut or short circuit wire; indicated by…rFFailure of Fan Motor at Refrigerator CompartmentrF ERefrigerator fan motor error-BLDC refrigerator fan motor is locked or not receiving…rSRefrigerator compartment sensor failurerS ERefrigerator sensor errorrtAbnormal Room Temperature Sensor-wire open, short circuit, temperature sensor damaged, or…rt EAmbient/defrost sensor errorRT sensorRoom temperature sensor abnormalRT sensor errorFailure of RT (Room Temperature) sensor due to cut or short circuit wire.RT sensor failureFailure of RT (room temperature) sensor due to cut or short circuit wire; indicated by…RT sensor failure (FRZ+REF temp off)Failure of RT (Room Temperature) sensor due to cut or short circuit wire; indicated by…Sd ECommunication error between Micom of Display PCB and Ice Maker Sub PCB MicomSSFailure of Opti-Fresh SensorSS ESub error (displayed by pressing Ice Plus and Freezer buttons simultaneously).StrokeCompressor stroke triptEWash heating errorttWater tank switch errorUSMiddle compartment (K2) sensor is disconnected or shorted.UU/UUOver-cooling and weak-cooling in upper and lower part at the same time; insufficient…WT-SensorWater tank sensor error
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