LG LRSXC2306 Series Service Manual Download Page 45

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Troubleshooting

TEST MODE 1

Voltage [V]

CON9
7

pin ~ 13

Defrost Heater Error
(

F dH)

Replace the
Door gasket

Check the Door gasket .
Is door gasket damaged?

Yes

Check the Defrost control part.

(2) Is Defrost Heater resistance

39 ~ 44Ω?

Yes

Change
Fuse-M

Check the Heater Voltage.
Is voltage 112~116V?

Yes

Check the Defrost control part.

Is Defrost Sensor resistance

22k

Ω↑ or OFF?

OFF

22kΩ

Replace
product

Input Test 2 Mode
(Push the button 2 times)

Replace
Main PCB

TEST MODE 2

Voltage [V]

CON9
7

pin ~ 13

120V

Check the Heater Voltage.
Is voltage 0V?

Yes

Input Test 1 Mode
(Push the button 1 time)

Replace
Main PCB

Explain to customer

reserved. Only training and service purposes.

Summary of Contents for LRSXC2306 Series

Page 1: ...ly training and service purposes Any reproduction duplication distribution including by way of email facsimile or other electronic means publication consent of the LG Electronics entity from which you received this Service Manual The material covered by this prohibition includes without limitation any text graphics or logos in this Service Manual MODEL LRSXC2706 LRSXC2306 GS75S GS77 VS27L GS66S ...

Page 2: ...NS 4 COMP TRIP SUMMARY 5 TROUBLE SHOOTING 6 HEAVY REPAIR METHOD OF REFRIGERATOR BY APPLICATION OF REFRIGERANT 19 SPECIFICATION 26 CIRCUIT DIAGRAM 28 PCB PICTURE 29 TROUBLE SHOOTING WITHOUT ERROR DISPLAY 57 TROUBLE DIAGNOSIS 74 HOW TO INSTALL REFRIGERATOR 84 HOW TO SERVICE DOOR DISPLAY 90 HOW TO SERVICE FUNNEL ASSEMBLY 91 EXPLODED VIEW 93 TROUBLE SHOOTING 30 ...

Page 3: ...icularly in wet or damp area 6 Use standard electrical components when replacing them 7 Make sure the hook is correctly engaged Remove dust and foreign materials from the housing and connecting parts 8 Do not fray damage machine heavily bend pull out or twist the power cord 9 Please check the evidence of moisture intrusion in the electrical components Replace the parts or mask it with insulation t...

Page 5: ...ge Detect Pistion Lock 5 Piston Lock detect Pistion Lock 5 Piston Lock detect Over Current Detection 6 Over Current detect Current Detection 6 Over Current detect Current Detection 6 Over Current detect Fault Fo 7 IPM armshort detect IPM Fault detect Fault Fo 7 IPM armshort detect IPM Fault detect Fault Fo 7 IPM armshort detect IPM Fault detect Communication Error 8 Communication Error Communicati...

Page 6: ... training and service purposes Comp Operation Defect If the Comp Fan is not operated then input the test mode and check the comp condition Operation or not Check the LED Blinking Information about LED blinking is following next page If It is normal condition then LED is not work ...

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Page 15: ... RYHUORDG RYHUSRZHU WULS Æ5HDVRQ 2YHUORDG Æ RJLF RPS 2II UHVWDUW HYHU V 2 OLQN 7 7ULS OLNLQJ QIRUPDWLRQ 2YHUORDG 7ULS EOLQN 2YHUORDG 7ULS OLQN 1 HDN RPS KDQJH FOH KHFN RPS KHFN 5HSODFH 3 OLQN WLPHV 3RZHU 2II ZDLW 0 OLQN WLPHV 7HVW 0RGH QSXW RPS 2 RPS 1 14 ...

Page 16: ...FN RPSUHVVRU KHFN 3RZHU RII 5HVLVWDQFH FKHFN SRLQW DUQHVV 2 RPSUHVVRU KDQJH KDUQHVV FKHFN 1 1 KHFN WKH WHUPLQDO RI RPSUHVVRU DUQHVV 1 1 Æ 6WHS 3RZHU RII 6WHS KHFN WKH UHVLVWDQFH 8 9 9 8 Æ HYHU UHVLVWDQFH 6WHS KHFN WKH KDUQHVV 1 RKP 15 ...

Page 17: ...RU DUQHVV KHFN Æ KHFN WKH UHVLVWDQFH 8 9 Æ KHFN WKH LQVXODWLRQ EURNHQ KHFN WKH UHVLVWDQFH EHWZHHQ RPS WHUPLQDO DQG HDUWK 0XOWL 7HVWHU ī 7KHUH DUH VRPH SUREDELOLW WKDW YDOXHV DUH VRPH GLIIHUHQW EHFDXVH RI WKH HQYLURQPHQW FRQGLWLRQ DUWK HUPHWLF WHUPLQDO Mode Resistance U V V W W U ƻa ƻ ǔ Ǖ ǔ Ǖ Ǖ ǔ 20 0 1 09 6DPSOH 8 9 16 ...

Page 18: ...ed for heavy repair of cycle Explosion concentration 8 8 4 Vol Burning temperature 494 1 3 Features of R600a Refrigerator Κ۷With refrigerant quantity of 60 or so for the refrigerator using R134a as refrigerant Κ۷Large vacuum level at suction pressure at low pressure side Κ۷COMP capacity of the refrigerator using R609a as refrigerant is large by 1 7 times than that of the refrigerator using R134a Κ...

Page 19: ...s reserved Only training and service purposes 1 5 Heave Repair Work Tool ẃẩR600a refrigerant ẃẩBombe ẃẩPinch Pliers ẃẩRefrigerant Discharge Hose ẃẩRefrigerant Return Bag ẃẩVacuum Pump ẃẩHandy Welding Machine ẃẩCharging Tube ẃẩLeakage Tester ẃẩDrier ...

Page 20: ...een 6sec through 12sec after powering ON to open all both sides of 3way valve ẃẩLeave doors of a refrigerator so that they are not closed ẃẩConnect pinch pliers with a refrigerant discharging hose ẃẩPlace the outlet of a refrigerant discharging hose outside Remove fire appliances or heating sources near a refrigerant discharging hose ẃẩAlways use a refrigerant returnbag for working at the containe...

Page 21: ...Vacuum pump must operate outdoor ẃẩOperate a vacuum pump in order to returnrefrigerant remained in the pipe ẃẩVacuum working time should be for more than 10 minutes 2 3 Welding Repair Step Required equipment Simple welding machine ẃẩRemove pinch pliers if remaining refrigerant returnis completed ẃẩCut the front part of a process pipe with a cutter Check that remaining refrigerant comes out ẃẩPerfo...

Page 22: ... recharge R600a refrigerant after completing work and then connect a charging tube with welding Charging Tube COMP Suction Pipe Discharge Pipe 2 5 Vacuum Air Removal Required equipment Vacuum pump ẃẩConnect a vacuum pump to a charging tube to perform vacuum cycle ẃẩVacuum work should be performed for an hour If vacuum time is short normal cooling performance may not be exerted due to failure of co...

Page 23: ...of refrigerator to operate a compressor ẃẩMeasure Bombe weight after 5 through 10 minutes to check remained refrigerant quantity to complete charging of refrigerant After charging refrigerant never perform welding work or work using fire appliances Charging Tube COMP Suction Pipe Discharge Pipe 2 7 Leak Inspection and Cycle Check Required equipment Leakage checking machine foam and leakage inspect...

Page 25: ...T WEIGHT kg 120 109 COOLING SYSTEM Fan Cooling TEMPERATURE CONTROL Micom Control DEFROSTING SYSTE Full Automatic Heater Defrost INSULATION Cyclo Pentane COMPRESSOR Driver starting type Linear comp EVAPORATOR Fin tube type CONDENSER MC condenser REFRIGERANT R600a 60g DIMENSION CLEARANCE LRSXC2706 GS75S GS77 VS27L 33 15 32 850 mm Depth A 35 29 32 912 mm Width B 68 29 32 1750 mm Height to Top of Case...

Page 31: ... 32 PCB PICTURE Copyright 2021 LG Electronics Inc All rights reserved Only training and service purposes 7 5 Display PCB optional P N EBR812437 7 6 WI FI PCB N A Plumbing Non Plumbing ...

Page 32: ...wer off and discharge fully before you test F2 On F3 On F4 On F2 F5 On F2 F3 F4 F5 On F1 F3 F5 On F2 F3 On F5 Off All on F1 Off All On F3 Off F5 Off Sub PCB Communication The connection line between the main control panel and subPCB panel is short or open All Off All Off All Off All Off All Off R1 R3R5 On All Off All On R1 Off All On R5 Off R3 Off R5 Off 3 ...

Page 34: ...F Other Normal 1 Freezer Sensor Error S ymptom Check Point Troubleshooting with Error Display CON4 17th pin 18th pin Resistance ohm 22ºF 30ºC 40k 13ºF 25ºC 30k 4ºF 20ºC 23k 13ºF 25ºC 17k 14ºF 10ºC 13k 23ºF 5ºC 10k 32ºF 0ºC 8k Copyright 2021 LG Electronics Inc All rights reserved Only training and service purposes 35 ...

Page 35: ... Is resistance OFF Sensor open Yes No Replace the refrigerator 4 Check the Sensor resistance Is resistance normal Yes 5 Check the Temperature and resistance refer to the table No problem Yes 6 Explain to customer CON4 17th pin 18th pin Resistance ohm 22ºF 30ºC 40k 13ºF 25ºC 30k 4ºF 20ºC 23k 13ºF 25ºC 17k 14ºF 10ºC 13k 23ºF 5ºC 10k 32ºF 0ºC 8k Copyright 20 21 LG Electronics Inc All rights reserved ...

Page 36: ...onnection 2 Check Sensor Resistance Resistance Ω CON4 15th pin 16 th pin Short 0 Open OFF Other Normal Resistance Ω 23ºF 5ºC 10k 32ºF 0ºC 8k 41ºF 5ºC 23k 50ºF 10ºC 17k 59ºF 15ºC 13k 37 Copyright 20 21 LG Electronics Inc All rights reserved Only training and service purposes CON4 15th pin 16 th pin ...

Page 37: ...Sensor resistance Is resistance OFF Sensor open Yes No Replace the refrigerator 4 Check the Sensor resistance Is resistance normal Yes 5 Check the Temperature and resistance refer to the table No problem Yes 6 Explain to customer CON4 15th pin 16 th pin Resistance Ω 23ºF 5ºC 10k 32ºF 0ºC 8k 41ºF 5ºC 23k 50ºF 10ºC 17k 59ºF 15ºC 13k 38 Copyright 20 21 LG Electronics Inc All rights reserved Only trai...

Page 38: ...istance 1 Ert Symptom Check Point Resistance Ω CON7 17th pin 18th pin Short 0 Open OFF Other Normal Resistance ohm 23ºF 5ºC 38k 32ºF 0ºC 30k 41ºF 5ºC 24k 50ºF 10ºC 19 5k 59ºF 15ºC 16k 39 Copyright 2021 LG Electronics Inc All rights reserved Only training and service purposes CON7 17th pin 18th pin ...

Page 39: ...Sensor resistance Is resistance OFF Sensor open Yes No Replace the refrigerator 4 Check the Sensor resistance Is resistance normal Yes 5 Check the Temperature and resistance refer to the table No problem Yes 6 Explain to customer CON7 17th pin 1 8th pin Resistance ohm 23ºF 5ºC 38k 32ºF 0ºC 30k 41ºF 5ºC 24k 50ºF 10ºC 19 5k 59ºF 15ºC 16k 40 Copyright 20 21 LG Electronics Inc All rights reserved Only...

Page 40: ...mptom Resistance Ω CON1 17th pin 22 thpin Short 0 Open OFF Other Normal Resistance Ω 22ºF 30ºC 40k 13ºF 25ºC 30k 4ºF 20ºC 23k 5ºF 15ºC 17k 14ºF 10ºC 13k 23ºF 5ºC 10k 32ºF 0ºC 8k 41 Copyright 20 21 LG Electronics Inc All rights reserved Only training and service purposes CON1 17th pin 22 thpin Check Point ...

Page 41: ...e Is resistance OFF Sensor open Yes No Replace the refrigerator 4 Check the Sensor resistance Is resistance normal Yes 5 Check the Temperature and resistance refer to the table No problem Yes 6 Explain to customer CON1 15st pin 22 thpin Resistance Ω 22ºF 30ºC 40k 13ºF 25ºC 30k 4ºF 20ºC 23k 5ºF 15ºC 17k 14ºF 10ºC 13k 23ºF 5ºC 10k 32ºF 0ºC 8k 42 Copyright 20 21 LG Electronics Inc All rights reserved...

Page 42: ...heck Sensor Resistance Resistance Ω CON4 21th pin 22th pin Short 0 Open OFF Other Normal CON4 21th pin 22th pin Resistance Ω 23ºF 5ºC 38k 32ºF 0ºC 30k 41ºF 5ºC 24k 50ºF 10ºC 19 5k 59ºF 15ºC 16k 43 Copyright 2021 LG Electronics Inc All rights reserved Only training and service purposes ...

Page 43: ...ce Ω 23ºF 5ºC 38k 32ºF 0ºC 30k 41ºF 5ºC 24k 50ºF 10ºC 19 5k 59ºF 15ºC 16k 1 Reconnect or repair the connector Is the Connector disconnected or loose between Main PCB and sensor Yes No 2 Check the Sensor resistance Yes No Change the Sensor 3 Check the Sensor resistance Is resistance OFF Sensor open Yes No Replace the refrigerator 44 Copyright 20 21 LG Electronics Inc All rights reserved Only traini...

Page 44: ...uck Symptom Check Point 4 Check the PCB output voltage Part Resistance Ω FUSE M 0 Defrost Heater 39 44 Ω Defrost Sensor 22kΩ TEST MODE 2 Voltage V CON9 7nd pin 13 th pin 120V TEST MODE 1 Voltage V CON9 7nd pin 13 th pin 0V 45 Copyright 20 21 LG Electronics Inc All rights reserved Only training and service purposes ...

Page 45: ...e Heater Voltage Is voltage 112 116V Yes 3 Check the Defrost control part Is Defrost Sensor resistance 22kΩ or OFF OFF 22kΩ Replace product Input Test 2 Mode Push the button 2 times Replace Main PCB NO TEST MODE 2 Voltage V CON9 7nd pin 13 th pin 120V 5 Check the Heater Voltage Is voltage 0V Yes Input Test 1 Mode Push the button 1 time Replace Main PCB No 6 Explain to customer 46 Copyright 20 21 L...

Page 46: ...heck Point 2 Check the Fan Motor 2 Check the PCB Fan motor voltage TEST MODE 1 Voltage V CON3 13th pin 14th pin Not 0V 5V CON3 13th pin 15th pin 2 4 5 VDC CON3 13th pin 16th pin 47 Copyright 2021 LG Electronics Inc All rights reserved Only training and service purposes 10 12 VDC ...

Page 47: ...h pin 2 4 5 VDC 4 Check the Fan Motor voltage Is Fan Motor voltage 10 12 VDC Yes Replace Main PCB No TEST MODE 1 Voltage V CON3 13th pin 16 th pin 10 12 VDC 5 Check the Fan Motor voltage Is Fan PWM voltage 2 4 5V Yes Replace Main PCB No 6 Explain to customer TEST MODE 1 Voltage V CON3 13th pin 14 th pin Not 0V 5V 5 Check the Fan Motor voltage Is Fan Feed Back voltage 0V 5V No Change the motor Yes ...

Page 48: ... motor and connector 2 Check the PCB Fan motor voltage Check Point Symptom TEST MODE 1 Voltage V CON3 9th pin 12 th pin 10 12 VDC CON3 9th pin 11 th pin 2 4 5 VDC CON3 9th pin 10 th pin Not 0V 5V 49 Copyright 20 21 LG Electronics Inc All rights reserved Only training and service purposes ...

Page 49: ...9th pin 11 th pin 2 4 5 VDC 4 Check the Fan Motor voltage Is Fan Motor voltage 10 12 V Yes Replace Main PCB No TEST MODE 1 Voltage V CON3 9th pin 12 th pin 5 Check the Fan Motor voltage Is Fan PWM voltage 2 4 5V Yes Replace Main PCB No 6 Explain to customer TEST MODE 1 Voltage V CON3 9th pin 10 th pin Not 0V 5V 5 Check the Fan Motor voltage Is Fan Feed Back voltage 0V 5V No Change the motor Yes 50...

Page 50: ...stance 1 Check for a loose connection 1 EIt Housing Resistance Ω CON1 26th pin 28 th pin 19 7 CON1 18th pin 23 th pin Change Between 0 5V 51 Copyright 20 21 LG Electronics Inc All rights reserved Only training and service purposes Symptom Check Point ...

Page 51: ...ge in I M test mode Is the voltage as below No Change the I M unit or Main PCB Check the I M motor resistance Is resistance as below Change the I M unit Yes Yes 4 Explain to customer 52 Copyright 20 21 LG Electronics Inc All rights reserved Only training and service purposes Housing Resistance Ω CON1 26th pin 28th pin 19 7 Housing Voltage V CON1 18th pin 23 th pin Change Between 0 5V ...

Page 52: ...r tank switch 1 Check for a loose connection 1 tt E 53 Copyright 20 21 LG Electronics Inc All rights reserved Only training and service purposes Symptom Check Point 3 Check the magnet assemble Voltage V CON4 13th 14th pin Water Tank assemble 0V Water Tank not assemble 5V ...

Page 53: ...nnected or loose between Main PCB and sensor Yes No 3 Test the voltage Is the voltage as below No Yes Change the Main PCB or W T S W 4 Explain to customer Voltage V CON6 13th 14th pin Water Tank assemble 0V Water Tank not assemble 5V 2 Check the W T S W resistance Is it correct compared with table No Yes Change the switch Resistance Ω Door S W Normal 0 Push S W Infinity CON4 CON4 ...

Page 54: ...1 Cube Crush mode doesn t work Symptom Check Point 1 Check the loose connection 2 Check the resistance Troubleshooting without Error Display 53 Copyright 2021 LG Electronics Inc All rights reserved Only training and service purposes ...

Page 55: ...22th pin Not Pushing 0 2V CON 2 14th pin 16th pin When Push 11 5 12 5V maintain 1s Not Pushing 0 2V Auger Motor RT25 Resistance ohm BK 18th GY RD 20th 2 3 BK 18th WH 22nd 2 3 GY RD 20th WH 22nd 2 3 Duct Motor RT25 Resistance ohm WH BK 16th RD 14th 8 14ohm 57 Copyright 20 21 LG Electronics Inc All rights reserved Only training and service purposes ...

Page 56: ...w No Yes Replace duct Motor GearedMotor DispenserMotor LEVERS W Voltage V CON 2 18th pin 20 th pin Not Pushing 0 2V CON 2 18th pin 22th pin Not Pushing 0 2V CON 2 20th pin 22th pin Not Pushing 0 2V CON 2 14th pin 16 th pin When Push 11 5 12 5V maintain 1s Not Pushing 0 2V Auger Motor RT25 Resistance ohm BK 18th GY RD 20th 2 3 BK 18th WH 22nd 2 3 GY RD 20th WH 22nd 2 3 Duct Motor RT25 Resistance oh...

Page 57: ...22 24 5 Ω INSPECTION POINT Water LEVER S W Water Valve CON 1 4th pin 12 th pin Pushing 24V Not Pushing 0 2V Water Lever S W CON 2 5th pin 6 th pin Pushing Not Pushing 3 5 5V Pilot Valve CON 3 33rd pin 34 th pin Pushing Not Pushing 0 2V 59 Copyright 20 21 LG Electronics Inc All rights reserved Only training and service purposes CON2 CON101 CON1 P N EBR328813 P N EBR328812 CON2 CON1 CON3 0 2V 24V ...

Page 58: ...n 11th pin Pushing 19 2 28 8V Not Pushing 0 2V Water Valve CON1 4nd pin 12th pin Pushing 19 2 28 8V Not Pushing 0 2V Water mode doesn t work 2 Check the voltage while pushing the lever S W Is voltage correct compared with table No Yes 1 Check the loose connection 3 Check the voltage Valves voltage correct compared with table No Yes Change the PCB Change the PCB INSPECTION POINT LEVER S W RESULT IC...

Page 59: ...onics Inc All rights reserved Only training and service purposes Symptom Check Point Resistance ohm Pump Motor 2 8ohm Water Valve 1520 1680ohm Sub PCBA Water LEVER S W CON 1 4th pin 12th pin Pushing 21 6 26 5 Not Pushing 0 2 CON 2 5th pin 6 th pin Pushing Not Pushing 3 5 5 0 2 Voltage V CON2 CON1 CON4 Main PCBA Lever S W Voltage V CON4 5th pin 6th pin Pushing 11 5 12 5 Not Pushing 0 2 ...

Page 60: ...e 1520 1680ohm No Yes Replace Water Valve Resistance ohm Water valve WH WH 1520 1680 3 Check the resistance value Is Pump motor resistance 2 8ohm No Yes Replace Pum p motor Resistance ohm Pump 2 8 Pump Motor 67 CON2 CON1 CON4 Sub PCBA Water LEVER S W CON 1 4th pin 12th pin Pushing 21 6 26 5 Not Pushing 0 2 CON 5th pin 6 th pin Pushing Not Pushing 3 5 5 0 2 Voltage V Main PCBA Lever S W Voltage V C...

Page 61: ...h sticky 2 Check the door S W resistance 3 Check the LED Lamp Resistance Ω Door S W Closed 0 Door S W LED Lamp Voltage V Blue Black Closed 0 2V Open 12V R Led Lamp INSPECTION POINT DOOR Voltage V CON4 23th pin 24th pin Close 0 2V Open 12V 61 Copyright 2021 LG Electronics Inc All rights reserved Only training and service purposes ...

Page 62: ...Change the Door S W Door S W 3 Check the PCB Voltage Is CON4 23th pin 24th pin voltage 12V No Yes Change the PCB 4 Check the LED Lamp voltage Is it 0 2V While door closed No Yes Change the Door S W 5 Check the LED Lamp voltage Is it 12V While door open No Yes Change the LED Lamp INSPECTION POINT DOOR Voltage V CON4 23th pin 24th pin Close 0 2V Open 12V 62 Copyright 2021 LG Electronics Inc All righ...

Page 63: ...y 2 Check the door S W resistance 3 Check the LED Lamp Resistance Ω Door S W Closed 0 Door S W LED Lamp Voltage V Blue Black Closed 0 2V Open 12V F Led Lamp INSPECTION POINT DOOR Voltage V CON8 19th pin 20th pin Close 0 2V Open 12V 63 Copyright 2021 LG Electronics Inc All rights reserved Only training and service purposes ...

Page 64: ...ON3 19th pin 20th pin voltage 12V No Yes Change the PCB 6 Explain to customer 4 Check the LED Lamp voltage Is it 0 2V While door closed No Yes Change the Door S W 5 Check the LED Lamp voltage Is it 12V While door open No Yes Change the LED Lamp INSPECTION POINT DOOR Voltage V CON8 19th pin 20th pin Close 0 2V Open 12V Resistance Ω Door S W Door Close 0 64 Copyright 2021 LG Electronics Inc All righ...

Page 65: ...ticky 6 Check the Fan motor voltage CON4 R1SNR 15th pin 16th pin Resistance Ω 23ºF 5ºC 38k 32ºF 0ºC 30k 41ºF 5ºC 24k 50ºF 10ºC 19 5k 59ºF 15ºC 16k Duct Status Air Flow Windy Air Temperature Cold Fan Motor TEST MODE 1 Voltage V CON3 13th pin 16th pin 10 8 13 2 VDC CON3 13th pin 15th pin 2 4 5 VDC CON3 13th pin 14th pin Not 0V 5V r 65 Copyright 2021 LG Electronics Inc All rights reserved Only traini...

Page 66: ...3ºF 5ºC 38k 32ºF 0ºC 30k 41ºF 5ºC 24k 50ºF 10ºC 19 5k 59ºF 15ºC 16k TEST MODE 1 Voltage V CON3 13th pin 15th pin 2 4 5 VDC 5 Check the Fan Motor voltage Is Fan Motor voltage 10 12V Yes Replace Main PCB No TEST MODE 1 Voltage V CON3 13th pin 16th pin 10 8 13 2 VDC 6 Check the Fan Motor voltage Is Fan PWM voltage 2 4 5V Yes Replace Main PCB No TEST MODE 1 Voltage V CON3 13th pin 14th pin Not 0V 5V 7...

Page 67: ...y 6 Check the Fan motor voltage Duct Status Air Flow Windy Air Temperature Cold CON4 17th pin 18th pin Resistance Ω 22ºF 30ºC 40k 13ºF 25ºC 30k 4ºF 20ºC 23k 5ºF 15ºC 17k 14ºF 10ºC 13k 23ºF 5ºC 10k 32ºF 0ºC 8k TEST MODE 1 Voltage V CON3 13th pin 16th pin 10 8 13 2 VDC CON3 13th pin 15th pin 2 4 5 VDC CON3 13th pin 14th pin Not 0V 5V 67 Copyright 2021 LG Electronics Inc All rights reserved Only trai...

Page 68: ...heck the Compressor and sealed system 5 Check the Fan motor Rotate fan using hand It feel sticky Yes Change the Fan motor Fan Motor No CON4 17th pin 18th pin Resistance Ω 22ºF 30ºC 40k 13ºF 25ºC 30k 4ºF 20ºC 23k 5ºF 15ºC 17k 14ºF 10ºC 13k 23ºF 5ºC 10k 32ºF 0ºC 8k 2 Open the fresh food door and Check the air flow D amper No Yes Check the damper Go to 4 68 Copyright 2021 LG Electronics Inc All right...

Page 69: ...TEST MODE 1 Voltage V CON3 13th pin 16th pin 10 12 VDC 7 Check the Fan Motor voltage Is Fan PWM voltage 2 4 5V No Replace Main PCB No TEST MODE 1 Voltage V CON3 13th pin 16th pin Not 0V 5V 8 Check the Fan Motor voltage Is Fan Feed Back voltage 0V 5V No Change the motor Yes 69 Copyright 2021 LG Electronics Inc All rights reserved Only training and service purposes ...

Page 70: ...ting PS Check the voltage during C Fan operation About AC 10V AC 230V BLACK RED 3 Check the COMP connector voltage Measure without pulling the HOUSING When the COMP FAN are not operating simultaneously force operate from the MAIN PCB in TEST MODE to check whether it is operating and then check the power of the COMP end to reset the power 1 COMP operation error Troubleshooting 1 2 3 4 76 Copyright ...

Page 71: ...osition Assurance TPA 1 time Comp Damper All FAN on All things displayed 2 times Forced defrost mode 22 22 displayed Main PCB 3 Reference 1 TEST MODE and Removing TPA 3 Wire Color BL Blue WH White BO Bright Orange BK Black BN Brown PR Purple RD Red GN Green SB Sky Blue GY Gray PK Pink AC TPA DC TPA 78 Copyright 2021 LG Electronics Inc All rights reserved Only training and service purposes Plumbing...

Page 73: ...elow Yes No Voltage V CON101 16th pin 14rd pin Not 0V 5V Change the Main PCB 4 Check the voltage in display Is CON101 voltage as below Yes No Voltage V CON101 16th pin 12nd pin Not 0V 5V Change the Display PCB 5 Check the voltage in Main PCB Is CON5 15th pin 17th pin voltage 0V or 5V Yes No Voltage V CON5 15th 17th pin Not 0V 5V Change the Main PCB 6 Check the voltage in Main PCB Is CON5 15th pin ...

Page 74: ...2nd pin 3rd pin Not 0V 5V Change the Main PCB 4 Check the voltage in display Is CON101 voltage as below Yes No Voltage V CON101 1st pin 3rd pin Not 0V 5V Change the Display PCB 5 Check the voltage in Main PCB Is CON5 15th pin 17th pin voltage 0V or 5V Yes No Voltage V CON5 15th 17th pin Not 0V 5V Change the Main PCB 6 Check the voltage in Main PCB Is CON5 15th pin 18th pin voltage 0V or 5V Yes No ...

Page 79: ...Place the door on a non scratching surface with the inner side facing up Removing the Fridge Door 1 Disconnect all wire harnesses NOTE The number of wire harnesses may vary depending on the model 2 Rotate the hinge lever clockwise Lift the top hinge free of the hinge lever latch CAUTION When lifting the hinge free of the hinge lever latch be careful that the door does not fall forward It is recomm...

Page 81: ... door level difference It may be unleveled concerning installed condition of the floor 1 Put thr install plate under the rear corner of the refrigerator 2 Check the movement of the freezer 3 If the freezer does not fixed inscrew the leg until it reaches on the floor 2 2 When the bottom part of freezer door unleveled 1 The same as refrigerator room Install PLATE Shake ...

Page 82: ...ing the Stopper Door turn it and reassemble For every one round dot at the top the door protrudes by 0 5mm control structure position Open and close the door 2 3 time 4 Check door level of terminal differenc 5 control structure shape contact part Initial status 0 5 mm raised 1 mm raised 1 5 mm raised 89 Copyright 2021 LG Electronics Inc All rights reserved Only training and service purposes ...

Page 83: ...raining and service purposes How to change Reed S W Remove screw Push the hook and Disassemble Reed Switch From Cover hinge Check Resistance of Reed S W if it is NG change it Number 3 Assemble Reed S W to hinge cover and Assemble Reed S W Housing Disassemble Housing ...

Page 84: ... Copyright 2021 LG Electronics Inc All rights reserved Only training and service purposes How to disassemble DID button Disassemble button lever by loosening a screw Loosen screw and remove cover of latch ...

Page 85: ...G Electronics Inc All rights reserved Only training and service purposes How to disassemble DID button Loosen a screw and pull out latch Loosen a screw and pull out holder Take reversed order for assembling the DID button ...

Page 86: ...by Flathead screwdriv 3 The assembly operations in the reverse order of disasse ly Should be attached by dubleside tape on Knock On sensor 2 Disassemble Knock On Sensor and wire housin 93 Copyright 2021 LG Electronics Inc All rights reserved Only training and service purposes ...

Page 87: ...Tighten a screw to the cove 4 1 Push the flat screwdriver in the rear of the LED lamp and take the lamp out from the hook 2 Disassemble the combined housing with the flat screwd ver 3 You should take LED lamps out and pull from the righ 3 Pull a screw using a Plier and disassemble the cove 94 Copyright 2021 LG Electronics Inc All rights ...

Page 88: ...ay 1 Pull out Cover Display 2 Disassemble the harness housing 3 The assembly operations in the reverse order of disassembly It is assembled in a state of keeping the display horizontal After assembling Lightly tap display to combine Display Hook Caution After the wire is cleaned up check that you do not interfere with it and than combine Display ...

Page 89: ...poses How to service Funnel Assembly 1 Pull out Cover Display 2 Disassemble the harness housing Disassemble the screw 2 point Disassemble the harness housing and hose How to disassemble hose connector Push connecter and pull hose After Replace Funnel assembly The assembly operations in the reverse order of disassembly ...

Page 90: ...p duct motor Screw 3 Remove Cap duct Screw 4 Remove Cap duct Pull Lever and Pull out body left side 5 After replace cap duct assembly Lever into hook 6 Spring push front side and then Push body side 97 Copyright 2021 LG Electronics Inc All rights reserved Only training and service purposes ...

Page 91: ...sembly 7 Screw Lever holder braket Check bracket direction 8 Screw Cap duct motor 9 Assembly Housing Cap duct housing Cap duct Heater housing 98 Copyright 2021 LG Electronics Inc All rights reserved Only training and service purposes ...

Page 92: ... to service Display assembly 1 Screw on top of display 2 Grab the screw and lift with the nipper 3 Remove the housing 99 Copyright 2021 LG Electronics Inc All rights reserved Only training and service purposes ...

Page 93: ...ights reserved Only training and service purposes How to disassemble DID Loosen two screw and remove a hinge by using tool be careful not to fall it down Lift DID with both hands and separate it from door Separate the housing only for GID Models ...

Page 94: ...om Upper 3 Loosen a screw at the back of Cover 4 Disassembly a harness housing at the back side of Cover 5 Disassembly a clamp with tube and plastic tube with joint tube Assemble 1 Assembly a clamp with tube and plastic tube with joint tube 2 Aassembly a harness housing at the back side of Cover 3 Fix a screw at the back of Cover 4 Push in Drawer Refrigerator Room Upper 5 Push in Cover TV ...

Page 95: ...raining and service purposes 1 Pull out Cover Freezer Room Upper 2 Loosen a screw at the top 3 Lift the back up pull it forward 4 Disassembly a harness housing at the top Assemble 1 Assemble a harness housing at the top 2 Push in Module 3 Fix a screw at the top 4 Assemble Cover Freezer Room Upper ...

Page 96: ...EXPLODED VIEW T R A P R O O D R E Z E E R F 402C 279A 278C 201A 203A 210A 612A 131C 131D 279C EV 113J 280B 501G 613A ...

Page 97: ...EXPLODED VIEW REFRIGERATOR DOOR EV 233A 241B 241C 231A 241C 241C When 231A is serviced It has to provide 212G together 212G ...

Page 98: ... A P M O C R E Z E E R F 149A 149C 154D 136D 332B 135J 329A 120B 404A 405D 405G 408A 301A 319B 281A 402A 402A 103B 281H 271A 903E 330B 501C 501B When 903E is serviced It has to provide 158C together 411A 501A EV 332A 501F 158C ...

Page 99: ...GERATOR COMPARTMENT 154A 136A 154B 136B 128G 128H 604F 604E 120D 135J 103B 271C 281G 280A 903D When 903D is serviced It has to provide 158A together 611E 611B 625A EV 615B 615A 140A 616K 621A 623D 627C 627B 604H 103A 158A ...

Page 100: ...EXPLODED VIEW MACHINE COMPARTMENT 105A 323B 307A 304A 319A 305B 305C 305B 305C 312A 314A 317A 318A 319C 329C 404B 316A 619A EV ...

Page 101: ...P No MFL71760682 MAY 19 2021 ...

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LG LRSXC2306 Series, Service Manual

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