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Micom Function

2-10. Function of Trouble Diagnosis(88-LED)

1. Failure diagnosis function is function to facilitate service when nonconforming matters affecting performance of product
during use of product.
2. In occurrence of failure, pressing the function adjustment button does not perform function and only alarm sound (“Ding~”)
rings.
3. If nonconforming matters occurred are released during display of failure code, MICOM returns to the original state (Reset).
4. Failure code is displayed on the display part of setting temperature for the freezing room and the display part of setting
temperature for the cold storage room of LED, which are placed at the display part of a refrigerator. All the LED graphics other
than a failure code are turned off

17

Copyright © 2017 LG Electronics Inc. All rights
reserved. Only training and service purposes.

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Содержание LSXC22396S

Страница 1: ...tronic means publication modification copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you have obtained the prior written 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 Copyright 2017 LG Electronics Inc All rights rese...

Страница 2: ...FRIGERATOR AND NAME OF EVERY PART 4 MICOM FUNCTION 5 ICE MAKER DISPENSER 1 WORKING PRINCIPLES 6 COMPRESSOR 7 TROUBLESHOOTING 1 FREEZER SENSOR ERRROR 2 REFRIGERATOR SENSOR ERROR 3 TEMPERATURE SENSOR ERROR 4 ICING SENSOR ERROR 5 DEFROST SENSOR ERROR 6 DEFROST HEATER ERROR 7 FREEZER FAN ERROR 8 CONDENSER FAN ERROR 9 COMMUNICATION ERROR 10 ICEMAKER MOTOR ERROR 9 HOW TO DISASSEMBLE AND ASSEMBLE 1 HANDL...

Страница 3: ...ot followed WARNING CAUTION WARNING Be cautious of electric shock Control board PWB Main and Sub uses power supply of about 120 VAC Do not allow consumers to directly repair disassemble or modify the refrigerator Harm electric shock or fire could occur Be sure the plug and cord are not pressed by the rear side of the refrigerator Damage to power plugs could result in fire or electric shock Plug th...

Страница 4: ... and not a precision device If storing or disposing of the refrigerator remove the doors to eliminate the possibility of children playing in it Children may become entrapped in the refrigerator Unplug the refrigerator for cleaning or repair Be sure your hands are dry when handling the power cord or plug Electric shock or harm may occur Be sure the plug and socket are clean and the connection is ti...

Страница 5: ...er of fire When a gas leak occurs do not unplug the refrigerator Open the doors for ventilation There is danger of burning due to explosion and sparking Do not clean the refrigerator by spraying water inside or outside It may result in product damage fire or electric shock This refrigerator is designed for use as a consumer home appliance only It is not a precision device for storing medication or...

Страница 6: ...oisture drop onto electrical parts If there is a problem in this area replace the parts or tape the wires to prevent contamination and degradation If you unplug the refrigerator or turn off the power wait 5 minutes before plugging it back in or turning the power on Rapid cycling of the compressor could cause failure Do not put your hands fingers tools or other objects into the icemaker crusher or ...

Страница 7: ... Using these handles will ensure safety and reduce the possibility of injury Do not touch foods containers or the inside of the freezer compartment with wet hands Your hands may stick to the cold items It could cause frost bite Be careful to avoid pinching hands or feet when opening the doors Do not stick your hands or fingers under the bottom of the refrigerator Watch out for sharp edges Do not p...

Страница 8: ... Room R Room F Room fan motor Overload protective device EvaPoration Conderser 4 2 3 Cyclo Pentane Forced method Effective inner capacity R Room Freezing cycle Parts related with dewing prevention Type of heat shield Eva oration F Room Product weight lb Outer dimension W X D X H Method F Room F Room Cooling method F Room 9 80L 21 9 Cu ft 4 L 14 50 Cu ft 209 40L 4 Cu ft MICOM Outside MICOM Outside ...

Страница 9: ...Circuit Diagram 9 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 10: ...inge L D Including door not including handle E Including handle F When opening door by 90 G Cabinet H Including cover PWB J Including door K Top part Side Rear part 35 9 912 1005 3 94 29 4 5 0 68 9 1750 69 775 70 3 1785 11 8 300 0 8 20 2 0 50 Unit inch mm Front View Top View LSXC22386 LSXC22326 LSXC22336 24 24 8 807 10 Copyright 2017 LG Electronics Inc All rights reserved Only training and service...

Страница 11: ... Icemaker Shelf LED Lamp Door Bin Freezing Zone Door Bin Shelf Shelf Refreshment center Filter LED Lamp Dairy Corner Door Bin Fresh zone Freezer Compartment Refrigerator Compartment 11 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes LSXC22396S ...

Страница 12: ... LG Electronics Inc All rights reserved Only training and service purposes LED Display Control Button Lock Hold 3sec Smart Grid Wi Fi Freezer Refrigerator Ice Plus Ice On Off Hold 3sec Ice Type Water Filter Filter Reset Hold 3sec Display Indicator LSXC22486 ...

Страница 13: ...Lock Hold 3sec Smart Grid Wi Fi Freezer Refrigerator Ice Plus Ice On Off Hold 3sec Ice Type Water Filter Filter Reset Hold 3sec Display Indicator Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes LSXC22486 LSXC22426 LSXC22436 ...

Страница 14: ... to the original status 3 Temperature setting is not changed even if selecting the Ice Plus 4 The change of temperature setting at the freezing room or the cold storage room is allowed with Ice Plus selected and processed 5 The cold storage room operates the status currently set with Ice Plus selected and processed 6 If selecting the Ice Plus the Ice Plus function is released after continuously op...

Страница 15: ...y part of refrigerator performs re operation in the cycle of 30 minutes If normal operation is performed poor status is released and refrigerator returns to the initial status reset 1 The M C room fan motor performs ON OFF control by linking with the COMP 2 It controls at the single RPM without varying RPM 3 Failure sensing method is same with freezing fan motor refer to failure diagnosis function...

Страница 16: ...nd Ding rings 3 If nonconforming matters occurred are released during display of failure code MICOM returns to the original state Reset 4 Failure code is displayed on the display part of setting temperature for the freezing room and the display part of setting temperature for the cold storage room of LED which are placed at the display part of a refrigerator All the LED graphics other than a failu...

Страница 17: ...er are mounted 1 This is function to dispense ice and water outside without opening doors 2 If pressing the Dispenser Pressing Switch after selecting ice cube ice Crushed ice or water relevant ice and water come out However when selecting ice the duct door is opened by electric Motor duct door Motor if pressing the Dispenser Pressing Switch The duct door is closed after it remains for 5 seconds in...

Страница 18: ...fault setting Ice on Ice off Ice on off BUTTON Ice on off BUTTON 19 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes LED Display Control Button Lock Hold 3sec Smart Grid Wi Fi Freezer Refrigerator Ice Plus Ice On Off Hold 3sec Ice Type Water Filter Filter Reset Hold 3sec Indicator ...

Страница 19: ...ect lever checks if the ICE BIN is full To operate LINE and SERVICE press and hold the Test Button for 3 seconds The icemaker will run through 3 stages Start Position with power on Ice Making Mode Harvest Fill Icemaking ICE MAKING STATUS INDICATOR Shows Ice making status While the indicator lights on Icemaker stops making ice Press and hold the ICE ON OFF button on display for 3sec to stop or rest...

Страница 20: ...t is operated by pressing and holding the Test Button for 3 seconds 3 The test works only in the Icemaking Mode This test works when the ejector and stainless lever is at the their original position It cannot be entered from the Harvest or Fill mode 4 After water is supplied the mormally CYCLE is followed Icemaking Checking full ice Harvest Fill Water Park Position CAUTION Icemaker and dispenser w...

Страница 21: ...UT CUT CUT CUT CUT CUT CUT CUT CUT CUT CUT CUT CUT CUT CUT CUT CUT CUT CUT CUT CUT CUT CUT Overcool compensation Refrigerator temperature compensation 0 Factory default 1 1 1 1 2 2 0 0 0 0 1 1 0 Remarks Above option circuit compensates the refrigerator temperature by simply cutting the circuit during the service 22 Copyright 2017 LG Electronics Inc All rights reserved Only training and service pur...

Страница 22: ... Freezer temperature compensation 0 Factory default 1 1 2 Remarks 2 Freezer undercool compensation circuit 2 1 Communication circuit and connecting L wire between main PCB and display PCB Q _ Main PCB Display PCB L Wire FD H 4 wires DC 12V GND Receive NO TCH condition Send Error condition Main MICOM MICOM exclusively for LCD ...

Страница 23: ...rost sensor external sensor k 7 7 k 3 2 2 0 2 k 0 6 k 9 6 1 5 1 k 3 7 4 k 3 1 0 1 k 4 8 3 k 1 0 1 5 k 0 3 k 8 7 0 k 1 4 2 k 2 6 5 k 5 9 1 k 9 4 0 1 k 9 5 1 k 9 3 5 1 k 3 1 k 1 3 0 2 k 1 1 k 5 2 5 2 k 9 8 k 2 0 3 k 2 6 k 4 1 0 4 k 3 4 k 8 0 0 5 24 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 24: ...Micom Circuit description 25 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 25: ...003 5 13 0012 Series name DLF FA FB Operating Type A A Inverter E E Inverter Rated Voltage Frequency M 220V 50 60Hz N 115V 50 60Hz Efficiency version A 1st generation B 2nd generation Displacement ex 90 9 0 stroke Application Category L LBP with R134a H HBP with R134a N LBP with R600a Buyer Code Model Code Line Serial No Date Year CVCF Constant Voltage Constant Frequency FLB075L BNA E Inverter Sys...

Страница 26: ...ncreases every 0 8sec until maximum stroke length is reached about 3 min 15 sec Step 3 CVCF interval 180V 60Hz Step 1 Start up Half stroke interval for first 20 seconds Step 2 Ramp up Stroke increases until maximum stroke length is reached about 1 min 40 sec Step 3 VVCF interval target voltage and frequency controlled by Control Board signals Inverter Error Codes code Requirement Off Time The numb...

Страница 27: ...w o P Replace drver PCB Time 30sec Y V 200 Comp FLB075 A Inverter TEST1 Forced Starting TDC Full Stroke Display ON Buzz 1 time r e f e R d n u o s y a l p s i D f e R 28 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 28: ...trol driver is PC board for the compressor This step shows the source voltage of the driver PC board Step 1 Open PCB Cover Step 2 Check Driver PCB Driver PCB located in machine room 29 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 29: ...ssor to PCB might be defective Case 2 If compressor works intermittently and LED blinks Cause Condenser Fan or Freezer Fan is not running Sealed system problem such as moisture restriction restriction at capillary tube or refrigerant leak Logic Compressor is forced to off and then tries to restart after 1 minute Blink Blink OFF Blink Blink OFF Blink OFF Blink OFF Y Y Y Y Y Y N N N N N OK NG Protec...

Страница 30: ...Compressor 31 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 31: ...amage Check Replace Compressor N Reset Power Y Current trip occur Cycle check Repeat Check Procedure IPM Check Y Replace Driver PCB N N N N Y Replace Compressor Sealed system Repair Y Compressor Doesn t works Cycle blockage N Y 32 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 32: ...Compressor 33 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 33: ...Compressor 34 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 34: ...Compressor 35 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 35: ...Troubleshooting PCB 1 PCB Picture Main PCB P N EBR809775 36 CON 6 CON 5 CON 2 CON 3 CON 8 CON 7 CON 201 CON 1 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 36: ...Troubleshooting 2 Display PCB P N EBR790695 37 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 37: ...ce Resistance Ω CON8 23th pin 24th pin Short 0 Open OFF Other Normal CON8 23th pin 24th pin Resistance Ω 22ºF 30ºC 40k 13ºF 25ºC 30k 4ºF 20ºC 23k 5ºF 15ºC 17k 14ºF 10ºC 13k 23ºF 5ºC 10k 32ºF 0ºC 8k 1 Freezer Sensor Error Troubleshooting with Error Display 38 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 38: ...r 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 CON8 23th pin 24th pin Resistance Ω 22ºF 30ºC 40k 13ºF 25ºC 30k 4ºF 20ºC 23k 5ºF 15ºC 17k 14ºF 10ºC 13k 23ºF 5ºC 10k 32ºF 0ºC 8k 6 Explain to customer CON8 CON8 39 Copyright 2017 LG Electronics Inc...

Страница 39: ...Sensor Resistance Resistance Ω CON7 19th pin 20th pin Short 0 Open OFF Other Normal CON7 19th pin 20th pin Resistance Ω 23ºF 5ºC 38k 32ºF 0ºC 30k 41ºF 5ºC 24k 50ºF 10ºC 19 5k 59ºF 15ºC 16k 40 CON 6 CON 5 CON 2 CON 3 CON 8 CON 7 CON 201 CON 1 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 40: ...heck the 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 19th pin 20th pin Resistance Ω 23ºF 5ºC 38k 32ºF 0ºC 30k 41ºF 5ºC 24k 50ºF 10ºC 19 5k 59ºF 15ºC 16k CON7 CON7 41 Copyright 2017 LG Electronics Inc All right...

Страница 41: ...nce Resistance Ω CON7 17th pin 18th pin Short 0 Open OFF Other Normal CON7 17th pin 18th pin Resistance Ω 23ºF 5ºC 38k 32ºF 0ºC 30k 41ºF 5ºC 24k 50ºF 10ºC 19 5k 59ºF 15ºC 16k P N EBR809775 42 CON 6 CON 5 CON 2 CON 3 CON 8 CON 7 CON 201 CON 1 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 42: ...gerator 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 18th pin Resistance Ω 23ºF 5ºC 38k 32ºF 0ºC 30k 41ºF 5ºC 24k 50ºF 10ºC 19 5k 59ºF 15ºC 16k CON7 2 Check the Sensor resistance Is resistance 0 Sensor short Yes No Change the Sensor 43 Copyright 2017 LG Electronics Inc All rights ...

Страница 43: ...sistance Ω CON5 13th pin 14th pin Short 0 Open OFF Other Normal CON5 13th pin 14th pin Resistance Ω 32ºF 0ºC 30k 50ºF 10ºC 20k 60ºF 16ºC 15k 68ºF 20ºC 13k 79ºF 26ºC 10k 86ºF 30ºC 9k P N EBR809775 44 CON 6 CON 5 CON 2 CON 3 CON 8 CON 7 CON 201 CON 1 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 44: ... the 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 CON5 CON5 CON5 13th pin 14th pin Resistance Ω 32ºF 0ºC 30k 50ºF 10ºC 20k 60ºF 16ºC 15k 68ºF 20ºC 13k 79ºF 26ºC 10k 86ºF 30ºC 9k 45 Copyright 2017 LG Electronics Inc ...

Страница 45: ...N6 5st pin 12thpin Short 0 Open OFF Other Normal CON6 5st pin 12thpin Resistance Ω 22ºF 30ºC 40k 13ºF 25ºC 30k 4ºF 20ºC 23k 13ºF 25ºC 17k 14ºF 10ºC 13k 23ºF 5ºC 10k 32ºF 0ºC 8k P N EBR809775 CON6 46 CON 6 CON 5 CON 2 CON 3 CON 8 CON 7 CON 201 CON 1 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 46: ...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 CON6 5st pin 12thpin Resistance Ω 22ºF 30ºC 40k 13ºF 25ºC 30k 4ºF 20ºC 23k 13ºF 25ºC 17k 14ºF 10ºC 13k 23ºF 5ºC 10k 32ºF 0ºC 8k CON6 Ice Maker Connector CON6 47 Copyright 2017 LG Electro...

Страница 47: ...e Ω CON8 21th pin 22th pin Short 0 Open OFF Other Normal CON8 21th pin 22th pin Resistance Ω 23ºF 5ºC 38k 32ºF 0ºC 30k 41ºF 5ºC 24k 50ºF 10ºC 19 5k 59ºF 15ºC 16k P N EBR809775 48 CON 6 CON 5 CON 2 CON 3 CON 8 CON 7 CON 201 CON 1 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 48: ...2ºF 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 Is resistance 0 Sensor short Yes No Change the Sensor 3 Check the Sensor resistance Is resistance OFF Sensor open Yes No Replace the refrigerator CON8 49 CON8 Copyright 2017 LG Electronics Inc All rights r...

Страница 49: ... 4 Check the PCB output voltage Part Resistance Ω FUSE M 0 Defrost Heater 48 54 Defrost Sensor 22k TEST MODE 2 Voltage V CON3 5nd pin 6th pin 112V 116V TEST MODE 1 Voltage V CON3 5nd pin 6th pin 0V CON3 50 R809775 CON 6 CON 5 CON 2 CON 3 CON 8 CON 7 CON 201 CON 1 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 50: ...ck the Heater Voltage Is voltage 112 116V Yes 3 Check the Defrost control part Is Defrost Sensor resistance 22k or OFF OFF 22kΩ Replace product Input Test 2 Mode Push the button 2 times Replace Main PCB NO TEST MODE 2 Voltage V CON3 5nd pin 6th pin 112V 116V 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 CON3 CON3 51 ...

Страница 51: ...eck the PCB Fan motor voltage TEST MODE 1 Voltage V CON8 9th pin 12th pin 10 12 VDC CON8 9th pin 19th pin 2 4 5 VDC CON8 9th pin 10th pin Not 0V 5V Fan Motor P N EBR809775 CON8 52 CON 6 CON 5 CON 2 CON 3 CON 8 CON 7 CON 201 CON 1 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 52: ...in 19th pin 2 4 5 VDC 4 Check the Fan Motor voltage Is Fan Motor voltage 10 12V Yes Replace Main PCB No TEST MODE 1 Voltage V CON8 9th pin 12th pin 10 12 VDC 5 Check the Fan Motor voltage Is Fan PWM voltage 2 4 5V No Replace Main PCB No 6 Explain to customer CON8 CON8 TEST MODE 1 Voltage V CON8 9th pin 10th pin Not 0V 5V 5 Check the Fan Motor voltage Is Fan Feed Back voltage 0V 5V No Change the mo...

Страница 53: ...r 2 Check the PCB Fan motor voltage Fan Motor P N EBR809775 CON8 TEST MODE 1 Voltage V CON8 11th pin 16th pin 10 12 VDC CON8 11th pin 20th pin 2 4 5 VDC CON8 11th pin 14th pin Not 0V 5V 54 CON 6 CON 5 CON 2 CON 3 CON 8 CON 7 CON 201 CON 1 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 54: ...n 20th pin 2 4 5 VDC 4 Check the Fan Motor voltage Is Fan Motor voltage 10 12V Yes Replace Main PCB No TEST MODE 1 Voltage V CON8 11th pin 16th pin 10 12 VDC 5 Check the Fan Motor voltage Is Fan PWM voltage 2 4 5V No Replace Main PCB No 6 Explain to customer CON8 CON8 TEST MODE 1 Voltage V CON8 11th pin 14th pin Not 0V 5V 5 Check the Fan Motor voltage Is Fan Feed Back voltage 0V 5V No Change the m...

Страница 55: ...nnection 2 Check the Yellow to Blue 3 Check the Blue to Brown 4 Check the Red to Blue 5 Check the pin15 to pin18 of CON5 6 Check the pin15 to pin17 of CON5 56 Check the hinge looseconnec on Changethe main PCB 6V Other Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 56: ... connection 2 Check Sensor Resistance P N EBR809775 Housing Resistance Ω CON6 7th pin 8th pin 374 456 CON6 9th pin 10th pin 374 456 CON6 57 CON 6 CON 5 CON 2 CON 3 CON 8 CON 7 CON 201 CON 1 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 57: ...d blue wires Is Motor resistance 374 456 No Change the ICE Maker Unit CON6 Is the Connector disconnected or loose between Main PCB and ICE Maker Reconnect or repair the connector No Yes Disconnect housing of Main PCB And check resistance between Purple and yellow wires Is Motor resistance 374 456 No Change the ICE Maker Unit Yes Change the Main PCB CON6 CON6 58 Copyright 2017 LG Electronics Inc Al...

Страница 58: ...heck the loose connection 2 Check the resistance P N EBR809775 Auger Motor Ice Maker Duct Motor Troubleshooting without Error Display 59 CON 6 CON 5 CON 2 CON 3 CON 8 CON 7 CON 201 CON 1 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 59: ...shing 0 2V Not Pushing 3 5 5V Duct Motor CON6 23th pin 24th pin Pushing 9 12V Not Pushing 0 2V Auger Motor CON3 4th pin 8th pin Pushing 112 115V Not Pushing 0 2V Motor Type Resistance Ω Auger Motor 33 37 Duct Motor 9 9 12 1 60 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 60: ... Motor Resistance Ω Dispenser Motor 9 9 12 1 Dispenser Motor CON6 INSPECTION POINT LEVER S W RESULT ICE Lever SW CON6 19th pin 20th pin Pushing 0 2V Not Pushing 3 5 5V 5 Check the voltage while pushing the lever S W Is voltage correct compared with table No Yes Change the PCB CON3 INSPECTION POINT LEVER S W RESULT Auger Motor CON3 4nd pin 8th pin Pushing 112 115V Not Pushing 0 2V 4 Check the resis...

Страница 61: ...ode doesn t work 1 Check the loose connection 2 Check the resistance Auger Motor Ice Maker Duct Motor P N EBR809775 62 CON 6 CON 5 CON 2 CON 3 CON 8 CON 7 CON 201 CON 1 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 62: ... LEVER S W 5HVXOW ICE Water Lever SW CON6 19th pin 20th pin Pushing 0 2V Not Pushing 3 5 5V Duct Motor CON6 23th pin 24th pin Pushing 9 12V Not Pushing 0 2V Auger Motor CON3 4th pin 7th pin Pushing 112 115V Not Pushing 0 2V 63 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 63: ...3 27 No Yes Replace Geared Motor Geared Motor Resistance Ω Black White Harness 23 27 6 Explain to customer 2 Check the voltage while pushing the lever S W Is voltage correct compared with No Yes 1 Check the loose connection 3 Check the voltage Is Duct Motor voltage correct No Yes Duct Motor Voltage V Duct Motor CON6 23th pin 24th pin Pushing 9 12V Not Pushing 0 2V INSPECTION POINT LEVER S W RESULT...

Страница 64: ...lve Machine Room Water Valve INSPECTION POINT Water LEVER S W 5HVXOW Water Lever SW CON6 19th pin 20th pin Pushing 0 2V Not Pushing 3 5 5V Pilot Valve CON3 2nd pin 11th pin Pushing 112 115V Not Pushing 0 2V Water valve CON3 2nd pin 10th pin Pushing 112 115V Not Pushing 0 2V Water Valve RD Pilot Valve GY Ground BL 65 Copyright 2017 LG Electronics Inc All rights reserved Only training and service pu...

Страница 65: ...pin 11th pin Pushing 112 115V Not Pushing 0 2V Water valve CON3 2nd pin 10th pin Pushing 112 115V 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 ICE ...

Страница 66: ...Check the LED Lamp Resistance Ω Door S W Open Closed 0 Door S W LED Lamp Voltage V Blue Black Closed 0 2V Open 12V R Led Lamp INSPECTION POINT DOOR Voltage V CON7 7th pin 8th pin Close 0 2V Open 12V CON5 R Door S W CON7 R LED Supply 67 CON 6 CON 5 CON 2 CON 3 CON 8 CON 7 CON 201 CON 1 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 67: ... No Yes Change the Door S W Door S W 3 Check the PCB Voltage Is CON7 7th pin 8th 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 CON7 INSPECTION POINT DOOR Voltage V CON7 7th pin 8th pin Close 0 2V Open 12V 68 Copyright 2017 LG Electronics Inc...

Страница 68: ... LED Lamp Resistance Ω Door S W Open 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 17th pin 18th pin Close 0 2V Open 12V CON5 F Door S W CON8 F LED Supply 69 CON 6 CON 5 CON 2 CON 3 CON 8 CON 7 CON 201 CON 1 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 69: ...in 18th pin voltage 12V No Yes Change the PCB CON8 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 17th pin 18th pin Close 0 2V Open 12V Resistance Ω Door S W Normal Infinity Door Close 0 70 Copyright 2017 LG Electronics I...

Страница 70: ...esistance 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 Duct Fan Motor R1Sensor R Damper F Fan motor CON7 CON8 TEST MODE 1 Voltage V CON8 9th pin 12th pin 10 12 VDC CON8 9th pin 19th pin 2 4 5 VDC CON8 9th pin 10th pin Not 0V 5V 71 CON 6 CON 5 CON 2 CON 3 CON 8 CON 7 CON 201 CON 1 Copyright 2017 LG Electronics Inc All rights ...

Страница 71: ... 38k 32ºF 0ºC 30k 41ºF 5ºC 24k 50ºF 10ºC 19 5k 59ºF 15ºC 16k CON7 TEST MODE 1 Voltage V CON8 9th pin 19th 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 CON8 9th pin 12th pin 10 12 VDC 6 Check the Fan Motor voltage Is Fan PWM voltage 2 4 5V No Replace Main PCB No CON8 CON8 TEST MODE 1 Voltage V CON8 9th pin 10th pin Not 0V 5V 7...

Страница 72: ...Status Air Flow Windy Air Temperature Cold Fan Motor CON8 23th pin 24th pin Resistance Ω 22ºF 30ºC 40k 13ºF 25ºC 30k 4ºF 20ºC 23k 5ºF 15ºC 17k 14ºF 10ºC 13k 23ºF 5ºC 10k 32ºF 0ºC 8k CON8 TEST MODE 1 Voltage V CON8 9th pin 12th pin 10 12 VDC CON8 9th pin 19th pin 2 4 5 VDC CON8 9th pin 10th pin Not 0V 5V 73 CON 6 CON 5 CON 2 CON 3 CON 8 CON 7 CON 201 CON 1 Copyright 2017 LG Electronics Inc All righ...

Страница 73: ...ck 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 CON8 CON8 23th pin 24th 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 74 Copyright 2017 LG Electronics Inc All ri...

Страница 74: ... 1 Voltage V CON8 9th pin 12th pin 10 12 VDC 7 Check the Fan Motor voltage Is Fan PWM voltage 2 4 5V No Replace Main PCB No CON8 CON8 TEST MODE 1 Voltage V CON8 9th pin 10th pin Not 0V 5V 8 Check the Fan Motor voltage Is Fan Feed Back voltage 0V 5V No Change the motor Yes CON8 75 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 75: ... 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 CON 6 CON 5 CON 2 CON 3 CON 8 CON 7...

Страница 76: ...in after taking action for 2 replace the COMP component 7 LED blinking 7 time repeatedly PCB part defect IPM 1 After resetting the power check normal operation 2 When the same symptom occurs again after taking action for 1 replace the PCB 8 LED blinking 8 time repeatedly Communication error 1 After resetting the power check normal operation 2 When the same symptom occurs again after taking action ...

Страница 77: ...n PWB A P T C D A P T C A 3 Reference 1 TEST MODE and Removing TP A 3 W ire 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 78 Lock Hold 3sec Smart Grid Wi Fi Freezer Refrigerator Ice Plus Ice On Off Hold 3sec Ice Type Water Filter Filter Reset Hold 3sec Lock Hold 3sec Smart Grid Wi Fi Freezer Refrigerator Ice Plus Ice On Off Hold 3se...

Страница 78: ... F 20 C 22 33 2 89 V 5 F 15 C 16 99 2 56 V 14 F 10 C 13 05 2 23 V 23 F 5 C 10 1 1 92 V 32 F 0 C 7 88 1 63 V 41 F 5 C 6 19 1 38 V 50 F 10 C 4 91 1 16 V 59 F 15 C 3 91 0 97 V 68 F 20 C 3 14 0 81 V 77 F 25 C 2 54 0 67 V 86 F 30 C 2 07 0 56 V 95 F 35 C 1 69 0 47 V 104 F 40 C 1 39 0 39 V 79 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 79: ...20 C 76 96 3 734 V 5 F 15 C 60 13 3 487 V 14 F 10 C 47 34 3 22 V 23 F 5 C 37 55 2 95 V 32 F 0 C 30 2 67 V 41 F 5 C 24 13 2 40 V 50 F 10 C 19 53 2 14 V 59 F 15 C 15 91 1 89 V 68 F 20 C 13 03 1 64 V 77 F 25 C 10 74 1 45 V 86 F 30 C 8 89 1 27 V 95 F 35 C 7 4 1 10 V 104 F 40 C 6 2 0 96 V 80 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes ...

Страница 80: ...4 TEMPERATRUE CHART AMBIENT SENSOR Troubleshooting TEMP RESISTANCE VOLTAGE 81 Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes Wi Fi Modem Error E Od ...

Страница 81: ...ver counterclockwise If the hinge or bracket are bent during assembly use two extra screws Tap Tite M6 Left Hinge attaching screw in the holes of the upper hinge 3 Disconnect upper hinge 1 from the hinge supporter 2 by grasping the front part of upper hinge and lifting up Hinge Assembly U in arrow A direction and pull foward in arrow B direction Be careful because the door may fall damaging the do...

Страница 82: ...the water line is not pinched by the dispenser Case PCB Button Lever Display PCB Figure 28 Case PCB Display PCB 2 Use these 2 holes to pull out the bottom 3 If nozzle is interfered with button push and pull out the bottom of button and then pull out the right side 4 Holding the inner side of the dispenser pull forward to remove 5 Remove the lead wire How to disassemble and assemble 3 13 WATER BUTT...

Страница 83: ...rom the valve Collet 5 Separate the housing and pull out the valve 1 Using a short screwdriver loosen one SCREW in DRAIN PIPE ASSEMBLY and one connected to the MOTOR COVER 2 Pull and separate the FAN ASSEMBLY and MOTOR turning counterclockwise based on the MOTOR SHAFT Mechanical Cover Tube Insert Line Clip Housing DRAIN PIPEASSEBLY MOTORCOVER MOTOR FAN ASSEMBLY The assembly is in the reverse order...

Страница 84: ...you cannot pull out the fresh compartment any more lift it up slightly to pull it out completely to the front side outer side 2 Hold the front of the Cover TV and Pull it out completely 3 Loosen 1 Screw on the Water Tank 4 Pull the water supply tube 1 is under the Freezer door and 2 is on the water valve 1 Hold the front of the Drawer and Pull it out completely 8QGHU WKH UHH HU RRU RQ WKH DWHU YDY...

Страница 85: ...s it is heavy 3 Hold the home bar with 2 hands and separate the home bar by lifting it up from the door 1 Separate the H Bar Gasket adjacent to the Holder Lever and then unscrew three screws 2 Hold the Holder Lever and then pull left firmly to separate the Cover Front It is able to separate the Holder Lever if two screws placed on the back of the separated Cover Front are unscrewed 3 After unscrew...

Страница 86: ... the height adjustment screw located on the bottom of the freezer hinge in clockwise direction to adjust the height How to adjust the door level difference 1 When the bottom part of refrigerator door unleveled 2 When the bottom part of freezer door unleveled 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 in scre...

Страница 87: ...se Place the outlet of a refrigerant discharging hose outside Remove fire appliances or heating sources near a refrigerant discharging hose Always use a refrigerant returnbag for working at the contained space Bore the charging pipe of a compressor with pinch pliers Remove fire appliances or heating sources near a refrigerator Perform refrigerant discharge for more than 7 minutes Suction Pipe Disc...

Страница 88: ...working time should be for more than 10 minutes Suction Pipe Vacuum Pump Discharge refrigerant outside using window or door Pinch Plier Process Pipe Discharge Pipe 1 3 Welding Repair Step Required equipment Simple welding machine Remove pinch pliers if remaining refrigerant returnis completed Cut the front part of a process pipe with a cutter Check that remaining refrigerant comes out Perform weld...

Страница 89: ...en connect a charging tube with welding Charging Tube Suction Pipe Discharge Pipe 1 5 Vacuum Air Removal Required equipment Vacuum pump Connect a vacuum pump to a charging tube to perform vacuum cycle Vacuum work should be performed for an hour If vacuum time is short normal cooling performance may not be exerted due to failure of cooling cycle 90 Copyright 2017 LG Electronics Inc All rights reser...

Страница 90: ...Normal Clogged cycle Somewhat cold Moisture clogged Check of cooler at F Room R Room Required equipment Bombe R134 a refrigerant Energy Star Al spiral condenser model 165g DOE Fe wire condenser model 175g Firstly remove fire appliances and heating source for performing work when charging scaled refrigerant Do not spray refrigerant indoor Measure the accurate quantity Energy Star l piral ondenser o...

Страница 91: ...e Home bar 2 Remove the gasket from gasket channel at doorliner as shown in the illustration below 4 Using the lever principle Insert the Small Screw Driver applies a force to hole 5 Disconnect wire harness 3 Remove a Screw 6 Remove a screw Gasket Channel Gasket ...

Страница 92: ...E ASSEMBLY LAMP 1 Open the Home bar When servicing the LEDs Cover Lamp is positively necessary 2 Tighten a screw to the cover 3 You should take LED lamps out and pull from the right 3 Pull a screw using a Plier and disassemble the cover ...

Страница 93: ...FREEZER DOOR 280A 405H 244A 200A 131C 600A 612A 606A 131D 203A 113F 113E EV EV EXPLODED VIEW 282G 241G 282H 92 201A ...

Страница 94: ...271D 271E REFRIGERATOR DOOR EV 212G 231B 231A 232E 230A 244F 241D 241H 241F 233A Copyright 2017 LG Electronics Inc All rights reserved Only training and service purposes 279E 310G 309G 212J ...

Страница 95: ...271A 271B 281A 128F 128E 128D 128C FREEZER COMPARTMENT EV 149A 619A 625A 332A 135J 332B 301A 329A 330B 405A 404A 405D 149C 135D 319B 281G 316B 405G 903E 158C 903G 94 ...

Страница 96: ...271B 128G 128H REFRIGERATOR COMPARTMENT EV 281B 625A 611E 611B 120B 140A 151A 615A 281H 621B 616K 120D 623A 627C 627B 903D 158A 243E 271C 95 120A 903F ...

Страница 97: ...317A 318A 308A MACHINE COMPARTMENT EV 411A 501F 501A 410H 304A 105A 319A 319C 405F 404B 405C 329C 103B 319E 315A 312A 314A 314A 316A 307A 410G 96 323B ...

Страница 98: ...Feb 2017 MFL62215930 ...

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