LG LFXS30796 Series Service Manual
  1. Manuals
  2. Brands
  3. LG Manuals
  4. Refrigerator
  5. LFXS30796 Series
  6. Service manual

LG LFXS30796 Series Service Manual

Hide thumbs Also See for LFXS30796 Series:
Table of Contents

Advertisement

Quick Links

REFRIGERATOR
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Any reproduction, duplication, distribution (including by way of email, facsimile or other electronic 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 ©
2016 - 2017
LG Electronics Inc. All rights reserved. Only training and service purposes.
MODEL : LFXS30796*
COLOR : BLACK STAINLESS(D)
STAINLESS(S)
Copyright © 2016 - 2017 LG Electronics Inc. All
rights reserved. Only training and service purposes.
CONFIDENTIAL

Advertisement

Table of Contents
loading

Related Manuals for LG LFXS30796 Series

Summary of Contents for LG LFXS30796 Series

  • Page 1 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.

  • Page 2: Table Of Contents

    3. Take caution not to get water near any electrical components. 4. Use exact replacement parts. 5. Remove any objects from the top prior to tilting the product. Copyright © 2016 - 2017 LG Electronics Inc. All - 2 - rights reserved. Only training and service purposes.

  • Page 3: Specifications

    35 3/4 in Width (door open 90 deg. w/o handle) 40 in Width (door open 90 deg. w/ handle) 44 1/4 in Copyright © 2016 - 2017 LG Electronics Inc. All - 3 - rights reserved. Only training and service purposes.

  • Page 4: Parts Identification

    2. PARTS IDENTIFICATION Icemaker Ice Bin Ice Compartment Door Copyright © 2016 - 2017 LG Electronics Inc. All - 4 - rights reserved. Only training and service purposes.

  • Page 5: Disassembly

    2) After inserting, pull the tube to ascertain that it is secure. 3) Assemble clip. Correct Incorrect Copyright © 2016 - 2017 LG Electronics Inc. All - 5 - rights reserved. Only training and service purposes.

  • Page 6: Door

    3. Assemble 2 screws. Remove the gasket from gasket channel at doorliner as shown in the illustration below. Gasket Channel Gasket Copyright © 2016 - 2017 LG Electronics Inc. All - 6 - rights reserved. Only training and service purposes.

  • Page 7: Sub,Pcb

    Copyright © 2016 - 2017 LG Electronics Inc. All - 7 - rights reserved. Only training and service purposes.

  • Page 8: Door Alignment

    Defrost Control assembly after Shroud cutting the Tie Wrap. (Figure 2) BRACKET DEFROST-CONTROL MOTOR GRILLE ASSEMBLY ASSEMBLY Ice Fan Assembly Copyright © 2016 - 2017 LG Electronics Inc. All - 8 - rights reserved. Only training and service purposes.

  • Page 9: Refrigerator Light (Top)

    Case, lamp 5. Assemble the cover in reverse order. Cover, lamp LED, Assembly Copyright © 2016 - 2017 LG Electronics Inc. All - 9 - rights reserved. Only training and service purposes.

  • Page 10: Multi Duct

    4. Grip both side of multi duct, pull it out. 5. Replace LED assembly. 6. Assembly the cover in reverse order. Copyright © 2016 - 2017 LG Electronics Inc. All - 10 - rights reserved. Only training and service purposes.

  • Page 11: Dispenser

    3) Lift up the hinge with one hand. 4) Pull out the Ice Corner Door with the other hand. Display PCB hinge Copyright © 2016 - 2017 LG Electronics Inc. All - 11 - rights reserved. Only training and service purposes.

  • Page 12: Icemaker Replacement

    NG Position 4) Insert 3 screws. 3) Disconnect wire harness from wall of compartment. 5) Push housing aside. Copyright © 2016 - 2017 LG Electronics Inc. All - 12 - - 12 - rights reserved. Only training and service purposes.

  • Page 13: How To Remove A Ice Bin

    Note) Before remove ice bin, put on clean golves for 2) Lift the lower part slightly. keeping clean ice bin. 3) Take the Ice Bin out slowly. Copyright © 2016 - 2017 LG Electronics Inc. All - 13 - rights reserved. Only training and service purposes.

  • Page 14: How To Remove And Reinstall The Pullout Drawer

    Step 6) Remove 2 screws of both side of supporter covers the bar and gearice tv and disassemble the supporter cover tv. Copyright © 2016 - 2017 LG Electronics Inc. All - 14 - rights reserved. Only training and service purposes.
  • Page 15 Step 7) Reinstall the two screws into the guide rails (one from each side). Step 8) Reinstall the lower basket, and close the freezer door. Copyright © 2016 - 2017 LG Electronics Inc. All - 15 - rights reserved. Only training and service purposes.

  • Page 16: Water Valve Disassembly Method

    Note: there maybe some water vary depending on the water pressure in the line. ( about 2 minutes.). Copyright © 2016 - 2017 LG Electronics Inc. All - 16 - rights reserved. Only training and service purposes.

  • Page 17: Pull Out Drawer

    Pull the drawer out to full extension. Lift the front of the drawer up, then pull it straight out. 2. To install, slightly tilt up the front and insert the drawer into the frame and push it back into push it back place. Copyright © 2016 - 2017 LG Electronics Inc. All - 17 -...

  • Page 18: Caution : Sealed System Repair

    Note : To service sealed system, follow the directions in "3-22" and "3-23" above.Then service is the same as a single evaporator system. Copyright © 2016 - 2017 LG Electronics Inc. All - 18 - rights reserved. Only training and service purposes.

  • Page 19: How To Remove And Reinstall The Homebar

    2. To replace the Door Baskets of Homebar, slides it in above the desired support and push down until it snaps into place. NOTE : Some Door Baskets of Homebar may vary in appearance and will only fit in one location. Copyright © 2016 - 2017 LG Electronics Inc. All - 19 - rights reserved. Only training and service purposes.

  • Page 20: How To Remove And Reinstall The Homebar Door

    2. Disconnect door switch wire harness. 3. Remove three Screws on the Top 4. Pull Frame Door. up and out. of Frame Door. Copyright © 2016 - 2017 LG Electronics Inc. All - 20 - rights reserved. Only training and service purposes.

  • Page 21: How To Remove And Reinstall The Door Foam Assembly, Refrigerator

    3. Rotate the hinge lever clockwise. 4. Separate the Home Bar. 5. Pull THE DOOR FOAM ASSEMBLY, REFRIGERATOR up and out. Copyright © 2016 - 2017 LG Electronics Inc. All - 21 - rights reserved. Only training and service purposes.

  • Page 22: How To Remove Frame Door Switch Of Door Foam

    2. Separate the Cap,decor on the frame door. 3. Press the hook of door switch, 4. Remove a wire connector for change. Then pushes it outward. Copyright © 2016 - 2017 LG Electronics Inc. All - 22 - rights reserved. Only training and service purposes.

  • Page 23: How To Remove The Case Home Bar

    4. Pull out the bar thought the top hinge. bottom through the SVC hole (bottom hinge). SVC Hole 5. Separate the Cover. Copyright © 2016 - 2017 LG Electronics Inc. All - 23 - rights reserved. Only training and service purposes.

  • Page 24: How To Remove And Reinstall The Cover Assembly,Pcb

    4. Using the lever principle, Insert the Small Screw Driver applies a force to hole. 6. Remove a screw. 5. Disconnect wire harness. Copyright © 2016 - 2017 LG Electronics Inc. All - 24 - rights reserved. Only training and service purposes.

  • Page 25: How To Remove And Reinstall The Case Assembly,Lamp

    2) Disassemble the combined housing with the flat screwdriver. 3) You should take LED lamps out and pull from the right. Copyright © 2016 - 2017 LG Electronics Inc. All - 25 - rights reserved. Only training and service purposes.

  • Page 26: Adjustment

    (2) Remove two screws on comp base (3) Use a L-shaped flap tool to pry off the cover (4) Assembly in reverse order of disassembly Copyright © 2016 - 2017 LG Electronics Inc. All - 26 - rights reserved. Only training and service purposes.

  • Page 27: Circuit Diagram

    5. CIRCUIT DIAGRAM Copyright © 2016 - 2017 LG Electronics Inc. All - 27 - rights reserved. Only training and service purposes.

  • Page 28: Troubleshooting

    6. TROUBLESHOOTING Copyright © 2016 - 2017 LG Electronics Inc. All - 28 - rights reserved. Only training and service purposes.
  • Page 29 Copyright © 2016 - 2017 LG Electronics Inc. All - 29 - rights reserved. Only training and service purposes.

  • Page 30: Pcb Picture

    CON10 CON7 CON201 CON203 CON6 CON3 CON2 CON5 CON1 7-2. Display PCB ( P/N : EBR79159716) CON802 CON102 CON101 CON3 CON103 Copyright © 2016 - 2017 LG Electronics Inc. All - 30 - rights reserved. Only training and service purposes.
  • Page 31 7-3. Sub PCB 7-4. InstaView Sensor PCB ( P/N : EBR813123**) CON2 CON3 Copyright © 2016 - 2017 LG Electronics Inc. All - 31 - rights reserved. Only training and service purposes.

  • Page 32: Troubleshooting With Error Display

    & 18 -22ºF / -30ºC -13ºF / -25ºC -4ºF / -20ºC 5ºF(-15ºC) 14ºF / -10ºC 23ºF / -5ºC 32ºF / 0ºC Copyright © 2016 - 2017 LG Electronics Inc. All - 32 - rights reserved. Only training and service purposes.
  • Page 33 Is the sensor connection refrigerator normall? Go to 6 Check the Sensor resistance. Is resistance OFF (Sensor open)? Reconnect or repair the connector Copyright © 2016 - 2017 LG Electronics Inc. All - 33 - rights reserved. Only training and service purposes.
  • Page 34 Resistance [Ω] pin & 16 23ºF / -5ºC 32ºF / 0ºC 41ºF / 5ºC 50ºF / 10ºC 19.5k 59ºF / 15ºC Copyright © 2016 - 2017 LG Electronics Inc. All - 34 - rights reserved. Only training and service purposes.
  • Page 35 Is the sensor connection normal? refrigerator Go to 6 Check the Sensor resistance. Is resistance OFF (Sensor open)? Reconnect or repair the connector Copyright © 2016 - 2017 LG Electronics Inc. All - 35 - rights reserved. Only training and service purposes.
  • Page 36 & 12 -22ºF / -30ºC -13ºF / -25ºC -4ºF / -20ºC 5ºF(-15ºC) 14ºF / -10ºC 23ºF / -5ºC 32ºF / 0ºC Copyright © 2016 - 2017 LG Electronics Inc. All - 36 - rights reserved. Only training and service purposes.
  • Page 37 Is the sensor connection normal? refrigerator Go to 6 Check the Sensor resistance. Is resistance OFF (Sensor open)? Reconnect or repair the connector Copyright © 2016 - 2017 LG Electronics Inc. All - 37 - rights reserved. Only training and service purposes.
  • Page 38 Resistance [Ω] pin & 20 23ºF / -5ºC 32ºF / 0ºC 41ºF / 5ºC 50ºF / 10ºC 19.5k 59ºF / 15ºC Copyright © 2016 - 2017 LG Electronics Inc. All - 38 - rights reserved. Only training and service purposes.
  • Page 39 50ºF / 10ºC 19.5k 59ºF / 15ºC Replace the ref rigerator Check the Sensor resistance. Is resistance OFF (Sensor open)? Explain to customer Copyright © 2016 - 2017 LG Electronics Inc. All - 39 - rights reserved. Only training and service purposes.
  • Page 40 Resistance [Ω] pin & 14 23ºF / -5ºC 32ºF / 0ºC 41ºF / 5ºC 50ºF / 10ºC 19.5k 59ºF / 15ºC Copyright © 2016 - 2017 LG Electronics Inc. All - 40 - rights reserved. Only training and service purposes.
  • Page 41 50ºF / 10ºC 19.5k 59ºF / 15ºC Replace the ref rigerator Check the Sensor resistance. Is resistance OFF (Sensor open)? Explain to customer Copyright © 2016 - 2017 LG Electronics Inc. All - 41 - rights reserved. Only training and service purposes.
  • Page 42 TEST MODE 3 Voltage [V] CON3 112V ~ 116V pin & 10 TEST MODE 1 Voltage [V] CON3 pin & 10 Copyright © 2016 - 2017 LG Electronics Inc. All - 42 - rights reserved. Only training and service purposes.
  • Page 43 Resistance [Ω] pin & 14 23ºF / -5ºC 32ºF / 0ºC 41ºF / 5ºC 50ºF / 10ºC 19.5k 59ºF / 15ºC 22kΩ↑ Copyright © 2016 - 2017 LG Electronics Inc. All - 43 - rights reserved. Only training and service purposes.
  • Page 44 TEST MODE 3 Voltage [V] CON3 112V ~ 116V pin & 9 TEST MODE 1 Voltage [V] CON3 pin & 9 Copyright © 2016 - 2017 LG Electronics Inc. All - 44 - rights reserved. Only training and service purposes.
  • Page 45 Resistance [Ω] pin & 14 23ºF / -5ºC 32ºF / 0ºC 41ºF / 5ºC 50ºF / 10ºC 19.5k 59ºF / 15ºC 22kΩ↑ Copyright © 2016 - 2017 LG Electronics Inc. All - 45 - rights reserved. Only training and service purposes.
  • Page 46 TEST MODE 1 Voltage [V] CON6 11.4~12.6V pin & 5 CON6 Not 0V, 5V pin &5 CON6 Not 0V, 5V pin &5 Copyright © 2016 - 2017 LG Electronics Inc. All - 46 - rights reserved. Only training and service purposes.
  • Page 47 Rotate f an using hand. It f eel sticky? TEST MODE 1 Voltage [V] CON5 Not 0V, 5V pin ~ 5 Explain to customer Copyright © 2016 - 2017 LG Electronics Inc. All - 47 - rights reserved. Only training and service purposes.
  • Page 48 TEST MODE 1 Voltage [V] CON7 11.4~12.6V pin & 12 CON7 Not 0V, 5V pin & 12 CON5 Not 0V, 5V pin &5 Copyright © 2016 - 2017 LG Electronics Inc. All - 48 - rights reserved. Only training and service purposes.
  • Page 49 It f eel sticky? TEST MODE 1 Voltage [V] CON7 Fan Motor Not 0V, 5V pin ~ 5 Explain to customer Copyright © 2016 - 2017 LG Electronics Inc. All - 49 - rights reserved. Only training and service purposes.
  • Page 50 TEST MODE 1 Voltage [V] CON7 11.4~12.6V pin & 5 CON7 Not 0V, 5V pin &5 CON7 Not 0V, 5V pin &5 Copyright © 2016 - 2017 LG Electronics Inc. All - 50 - rights reserved. Only training and service purposes.
  • Page 51 It f eel sticky? Voltage [V] TEST MODE 1 Fan Motor CON7 Not 0V, 5V pin ~ 5 Explain to customer Copyright © 2016 - 2017 LG Electronics Inc. All - 51 - rights reserved. Only training and service purposes.
  • Page 52 Voltage [V] CON7 11.4~12.6V pin & 6 CON7 Not 0V, 5V pin & 6 CON5 Not 0V, 5V pin & 4 Copyright © 2016 - 2017 LG Electronics Inc. All - 52 - rights reserved. Only training and service purposes.
  • Page 53 It f eel sticky? TEST MODE 1 Voltage [V] Fan Motor CON5 Not 0V, 5V 1pin & 4 Explain to customer Copyright © 2016 - 2017 LG Electronics Inc. All - 53 - rights reserved. Only training and service purposes.
  • Page 54 CON101 Not 0V, 5V pin & 6 CON5 Not 0V, 5V pin & 6 CON5 Not 0V, 5V pin & 8 Copyright © 2016 - 2017 LG Electronics Inc. All - 54 - rights reserved. Only training and service purposes.
  • Page 55 0V or 5V? Voltage Voltage CON101 CON101 pin ~ 6 0V, 5V CON5 pin ~ 8 0V, 5V Explain to customer Copyright © 2016 - 2017 LG Electronics Inc. All - 55 - rights reserved. Only training and service purposes.
  • Page 56 1. Cube mode 1. Check the loose connection doesn’t work 2. Check the resistance CON1 CON2 Ice Maker Geared Motor Dispenser Motor Copyright © 2016 - 2017 LG Electronics Inc. All - 56 - rights reserved. Only training and service purposes.
  • Page 57 31.1 ~ 42.1 CON2 pin ~ Dispenser Motor 9.9 ~ 12.1 0~2V B(NEUTRAL) Pushing Pushing 9~12V CON1 pin ~ 0~2V Pushing Copyright © 2016 - 2017 LG Electronics Inc. All - 57 - rights reserved. Only training and service purposes.
  • Page 58 Dispenser Motor 9.9 ~ 12.1 CON1 PIN12 PIN13 Explain to customer LEVER S/W Voltage [V] Pushing 9~12V CON1 pin ~ 0~2V Pushing Copyright © 2016 - 2017 LG Electronics Inc. All - 58 - rights reserved. Only training and service purposes.
  • Page 59 1. Crush mode 1. Check the loose connection doesn’t work 2. Check the resistance CON1 CON2 Ice Maker Geared Motor Dispenser Motor Copyright © 2016 - 2017 LG Electronics Inc. All - 59 - rights reserved. Only training and service purposes.
  • Page 60 31.1 ~ 42.1 CON2 pin ~ Dispenser Motor 9.9 ~ 12.1 0~2V B(NEUTRAL) Pushing Pushing 9~12V CON1 pin ~ 0~2V Pushing Copyright © 2016 - 2017 LG Electronics Inc. All - 60 - rights reserved. Only training and service purposes.
  • Page 61 Dispenser Motor 9.9 ~ 12.1 CON1 PIN12 PIN13 Explain to customer LEVER S/W Voltage [V] Pushing 9~12V CON1 pin ~ 0~2V Pushing Copyright © 2016 - 2017 LG Electronics Inc. All - 61 - rights reserved. Only training and service purposes.
  • Page 62 ~ 0~2V B(NEUTRAL) Pushing Pushing 112~115V CON2 pin ~ 0~2V B(NEUTRAL) Pushing Resistance [Ω] Pilot Valve 360~420 Water valve 360~420 Copyright © 2016 - 2017 LG Electronics Inc. All - 62 - rights reserved. Only training and service purposes.
  • Page 63 Check the resistance value. pin ~ Is Water Valve resistance 0~2V B(NEUTRAL) 360~420Ω? Pushing Water Valve Resistance [Ω] Water valve 360~420 Explain to customer Copyright © 2016 - 2017 LG Electronics Inc. All - 63 - rights reserved. Only training and service purposes.
  • Page 64 CON6 1 pin &5 Not 0V, 5V Duct Status CON6 34 pin &5 Air Flow Windy Not 0V, 5V Air Temperature Cold Copyright © 2016 - 2017 LG Electronics Inc. All - 64 - rights reserved. Only training and service purposes.
  • Page 65 Is Fan PWM voltage 0V, 5V? TEST MODE 1 Voltage [V] CON6 Not 0V, 5V pin ~ 5 Explain to customer Copyright © 2016 - 2017 LG Electronics Inc. All - 65 - rights reserved. Only training and service purposes.
  • Page 66 Push S/W Infinity Voltage [V] CON6 11.4~12.6V pin & 30 LED Lamp Voltage [V] Closed 0~2V Blue & Black Open 11.4~12.6V Copyright © 2016 - 2017 LG Electronics Inc. All - 66 - rights reserved. Only training and service purposes.
  • Page 67 & 15 open) voltage 11.4 ~ 12.6V? CON6 Explain to customer Voltage [V] CON6 11.4 ~ 12.6V pin & 15 Copyright © 2016 - 2017 LG Electronics Inc. All - 67 - rights reserved. Only training and service purposes.
  • Page 68 Push S/W Infinity Voltage [V] CON6 11.4~12.6V pin & 15 LED Lamp Voltage [V] Closed 0~2V White & Yellow Open 11.4~12.6V Copyright © 2016 - 2017 LG Electronics Inc. All - 68 - rights reserved. Only training and service purposes.
  • Page 69 Check the PCB Voltage. Is CON6 28 pin & 30 voltage 11.4~12.6V? (While door open) CON6 Side LED Lamp Change the LED Lamp Copyright © 2016 - 2017 LG Electronics Inc. All - 69 - rights reserved. Only training and service purposes.
  • Page 70 Duct Status CON7 8 Not 0V, 5V & 12 Air Flow Windy CON5 4 Not 0V, 5V &5 Air Temperature Cold Copyright © 2016 - 2017 LG Electronics Inc. All - 70 - rights reserved. Only training and service purposes.
  • Page 71 (Push the button 1 time) Check the F Fan Motor Open the Freezer door and Go to 5 Check the air f low. Windy? Copyright © 2016 - 2017 LG Electronics Inc. All - 71 - rights reserved. Only training and service purposes.
  • Page 72 Main PCB Is Fan PWM voltage 1~5V? Voltage [V] TEST MODE 1 CON5 Not 0V, 5V pin ~ 5 Explain to customer Copyright © 2016 - 2017 LG Electronics Inc. All - 72 - rights reserved. Only training and service purposes.
  • Page 73 8-20. Wi-Fi Modem Error (E Od) Symptom Check Point 1. E Od 1. Check the loose connection 2. Check the voltage Copyright © 2016 - 2017 LG Electronics Inc. All - 73 - rights reserved. Only training and service purposes.
  • Page 74 Copyright © 2016 - 2017 LG Electronics Inc. All - 74 - rights reserved. Only training and service purposes.
  • Page 75 Yellow ~ Black Knock on 0 ~ 2V LED Lamp Voltage [V] Knock off 0~2V White ~ Yellow Knock on 11.4 ~ 12.6V Copyright © 2016 - 2017 LG Electronics Inc. All - 75 - rights reserved. Only training and service purposes.
  • Page 76 Explain to customer CON10 Voltage [V] CON10 2 pin ~ 3 11.4 ~ 12.6V CON10 4 pin ~ 6 4.75 ~ 5.25V Copyright © 2016 - 2017 LG Electronics Inc. All - 76 - rights reserved. Only training and service purposes.

  • Page 77: Reference

    2. How to remove Terminal Position Assurance (TPA) <AC TPA> <DC TPA> After measure the values, you should put in the TPA again. Copyright © 2016 - 2017 LG Electronics Inc. All - 77 - rights reserved. Only training and service purposes.
  • Page 78 77°F (+25°C) 0.67 V 2.07 ㏀ 86°F (+30°C) 0.56 V 1.69 ㏀ 95°F (+35°C) 0.47 V 1.39 ㏀ 104°F (+40°C) 0.39 V Copyright © 2016 - 2017 LG Electronics Inc. All - 78 - rights reserved. Only training and service purposes.
  • Page 79 77°F (+25°C) 1.45 V 8.89 ㏀ 86°F (+30°C) 1.27 V 7.40 ㏀ 95°F (+35°C) 1.10 V 6.20 ㏀ 104°F (+40°C) 0.96 V Copyright © 2016 - 2017 LG Electronics Inc. All - 79 - rights reserved. Only training and service purposes.

  • Page 80: Component Testing Information

    Sensor (at room temperature) Test Point Ressult Test Point Ressult (1) to (2) 0 ~ 0.1 Ω (1) to (2) 11 Ω Copyright © 2016 - 2017 LG Electronics Inc. All - 80 - rights reserved. Only training and service purposes.
  • Page 81 Infinitive value implies sheath heater is disconnected. Standard Sheath heater (at all temperature) Test Point Ressult (1) to (2) 62 ~ 70 Copyright © 2016 - 2017 LG Electronics Inc. All - 81 - rights reserved. Only training and service purposes.
  • Page 82 Infinitive value implies sheath heater is disconnected. Standard Sheath heater (at all temperature) Test Point Ressult (1) to (2) 62 ~ 70 Copyright © 2016 - 2017 LG Electronics Inc. All - 82 - rights reserved. Only training and service purposes.
  • Page 83 R=(120x120)/130=111 Ω Infinitive value implies sheath heater is disconnected. Standard L-cord Heater (at all temperature) Test Point Ressult (1) to (2) 103~119 Copyright © 2016 - 2017 LG Electronics Inc. All - 83 - rights reserved. Only training and service purposes.
  • Page 84 -.No Magnet Magnet Center Magnet Center Switch Center Switch Center Good position Bad position -.Magnet Near the Switch -.Resistance & Service Action Copyright © 2016 - 2017 LG Electronics Inc. All - 84 - rights reserved. Only training and service purposes.
  • Page 85 Push Hook Push Hook Push second Push first Copyright © 2016 - 2017 LG Electronics Inc. All - 85 - rights reserved. Only training and service purposes.
  • Page 86 -.No Magnet Magnet Center Magnet Center Switch Center Switch Center Good position Bad position -.Magnet Near the Switch -.Resistance & Service Action Copyright © 2016 - 2017 LG Electronics Inc. All - 86 - rights reserved. Only training and service purposes.
  • Page 87 Push First push Second push Copyright © 2016 - 2017 LG Electronics Inc. All - 87 - rights reserved. Only training and service purposes.
  • Page 88 -.No Magnet Magnet Center Magnet Center Switch Center Switch Center Good position Bad position -.Magnet Near the Switch -.Resistance & Service Action Copyright © 2016 - 2017 LG Electronics Inc. All - 88 - rights reserved. Only training and service purposes.
  • Page 89 - . Check the Reed S/W resistance and if it is NG, Change it (Number 3) - . Assemble in reverse order how to disassemble Copyright © 2016 - 2017 LG Electronics Inc. All - 89 - rights reserved. Only training and service purposes.
  • Page 90 - Dispenser DC Motor : When customer push the dispenser button, Pull duct door How to Measure Dispensor DC Motor Standard Dispenser DC Motor Test Points Result (1) to (2) 9.9 ~ 12.1 Ω Copyright © 2016 - 2017 LG Electronics Inc. All - 90 - rights reserved. Only training and service purposes.
  • Page 91 Cube Solenoid Test Points Result Test Points Result (1) to (2) 31.1 ~ 42.09 Ω (1) to (3) 31.1 ~ 42.09 Ω Copyright © 2016 - 2017 LG Electronics Inc. All - 91 - rights reserved. Only training and service purposes.
  • Page 92 Check to see if there is electrical current, if there is resistance the damper is good. Standard Damper Test Points Result Test Points Result Red and Yellow 270~330 Ω Blue and White 270~330 Ω Copyright © 2016 - 2017 LG Electronics Inc. All - 92 - rights reserved. Only training and service purposes.
  • Page 93 How to Measure Flow Sensor (in machine room) Standard Test Points Result Red wire to Black wire 4 ~ 30 kΩ Copyright © 2016 - 2017 LG Electronics Inc. All - 93 - rights reserved. Only training and service purposes.

  • Page 94: Compressor Troubleshooting

    Check C Heavy Repair Leakage? Recheck IPM output Comp. > Replace Driver PCB Work? Comp. Check? Refrigerant Heavy Repair Recheck leak ? Copyright © 2016 - 2017 LG Electronics Inc. All - 94 - rights reserved. Only training and service purposes.
  • Page 95 - This step shows the source voltage of the driver PC board. Step1. Open PCB Cover Step2. Check Driver PCB * Driver PCB located in machine room. Copyright © 2016 - 2017 LG Electronics Inc. All - 95 - rights reserved. Only training and service purposes.
  • Page 96 - After initial power-up, when the compressor begins to operate, wait 10 minutes before checking. Tester - The compressor is operating normally if the voltage is greater than 80V. Copyright © 2016 - 2017 LG Electronics Inc. All - 96 - rights reserved. Only training and service purposes.
  • Page 97 Capacitor Check C Cycle Cycle Check E Compressor Replace Damage Compressor Repeat Stroke Trip Reset Check C Check Procedure Power Occur? Copyright © 2016 - 2017 LG Electronics Inc. All - 97 - rights reserved. Only training and service purposes.
  • Page 98 Replace Damage Doesn't work Check C Check C Compressor Replace Driver PCB Repeat Reset No Connect Trip Power Check Procedure occur? Copyright © 2016 - 2017 LG Electronics Inc. All - 98 - rights reserved. Only training and service purposes.
  • Page 99 Reset Current trip Repeat Power Occur? Check Procedure Compressor Replace Cycle blockage? Doesn't works Compressor Sealed system Cycle Repair Check Copyright © 2016 - 2017 LG Electronics Inc. All - 99 - rights reserved. Only training and service purposes.
  • Page 100 Test Doesn't work Drive PCB (turn off) Point A Modify Repeat Check Procedure Compressor Power Damage Reset Check C3 Replace Compressor Copyright © 2016 - 2017 LG Electronics Inc. All - 100 - rights reserved. Only training and service purposes.
  • Page 101 (Communication Error) Check B7 Check Check Comp. Starting Replace When C-Fan doesn't work Driver PCB Reset Repeat Power Check Procedure Copyright © 2016 - 2017 LG Electronics Inc. All - 101 - rights reserved. Only training and service purposes.
  • Page 102 450V, 20 F 5% deviation. Multi Tester Earth Dead short check Multi Tester Hermetic terminal Copyright © 2016 - 2017 LG Electronics Inc. All - 102 - rights reserved. Only training and service purposes.
  • Page 103 Is frost pattern Comp,Cond T > uniform? Is frost patern Ambient temp+5deg Uniform? Sealed System Sealed System is OK is OK Heavy repair Copyright © 2016 - 2017 LG Electronics Inc. All - 103 - rights reserved. Only training and service purposes.
  • Page 104 When compressor is normal, it does not blink : Refer to the next page to find out what actions to take according to how many times LED blink Copyright © 2016 - 2017 LG Electronics Inc. All - 104 -...
  • Page 105 2. If the same symptom (IPM) arises after the first - off - on -on - on- - off ··· repeating ··· action, replace PCB Copyright © 2016 - 2017 LG Electronics Inc. All - 105 - rights reserved. Only training and service purposes.
  • Page 106 Perform sealed refrigeration system. is faulty. system repair. Check the The operation of the Replace the Thermistor. Thermistor is incorrect. Thermistor. Copyright © 2016 - 2017 LG Electronics Inc. All - 106 - rights reserved. Only training and service purposes.

  • Page 107: Icemaker Opearting And Trouble Shooting

    Use a vacuum cleaner with a soft brush to clean the grille, the open areas behind the grille and the front surface area of the condenser. Replace the mechanical cover. ｡｡ Copyright © 2016 - 2017 LG Electronics Inc. All - 107 - rights reserved. Only training and service purposes.
  • Page 108 Trace of Oil Leak Undercharge (The equalization test is trying to restart a compressor using a start kit after it has been operating.) Copyright © 2016 - 2017 LG Electronics Inc. All - 108 - rights reserved. Only training and service purposes.
  • Page 109 • While ICE OFF indicator is on, icemaker stops making ice. But you can disense the ices until the ices run out from the ice stoare. Test Button Copyright © 2016 - 2017 LG Electronics Inc. All - 109 - rights reserved. Only training and service purposes.
  • Page 110 • Check if the customer uses a reverse osmosis system or water purifier. Reverse osmosis systems or water purifiers can cause low water pressure. Set SVC Copyright © 2016 - 2017 LG Electronics Inc. All - 110 - rights reserved. Only training and service purposes.

  • Page 111: Description Of Function & Circuit Of Micom

    13. DESCRIPTION OF FUNCTION & CIRCUIT OF MICOM Copyright © 2016 - 2017 LG Electronics Inc. All - 111 - rights reserved. Only training and service purposes.
  • Page 112 Copyright © 2016 - 2017 LG Electronics Inc. All - 112 - rights reserved. Only training and service purposes.
  • Page 113 2. Perform the same way again to cancel the display mode. 3. All Freezing unit will be turned off at display mode (Exceptions : Lamp, Display) Copyright © 2016 - 2017 LG Electronics Inc. All - 113 - rights reserved. Only training and service purposes.
  • Page 114 1. The temperature control will automatically start upon the selected Auto Pantry temperature control. 2. You can adjust the Pantry control with three different temperature ranges by pressing the Temp.Selector button. Copyright © 2016 - 2017 LG Electronics Inc. All - 114 -...
  • Page 115 405F 410G 315A 405C 407A 610C 308A 315B 315C Due to use subsidiary material, It does not provide the service with a single Part. Copyright © 2016 - 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 116 CAUTION: Use the part number to order part, not the position number. 145G 145C 145J 145K 131A 249M 136C 136B 133C 145F 249L 132Q 145M 136E 134A 133C 145J 145H 132P 237C 136A Copyright © 2016 - 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 117 141A 141A 141F 141F 141B 141B 255A 255B 154D 177C 255A 132P 161B 161C 133E 161A 133E 146E 151B 151C 151A 162B 162A 145D Copyright © 2016 - 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 118 406E 250B 243P 250A 122C 250K 406J 249E 200A 406I 250F 262F 250B 276D 206K 406H 206L 212D 249J 407G 201A 203A 249F 249K Copyright © 2016 - 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 119 CAUTION: Use the part number to order part, not the position number. 276A 276G 276F 276I 405A 276B 275A 278C 279A 278D 279K 402E 402C 279L 501D 410S 501J 279B 281A 501A 279C Copyright © 2016 - 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 120 CAUTION: Use the part number to order part, not the position number. 617A 625A 616G 616G 623B 616J 623B 616J 627B 603C 627A 619A Copyright © 2016 - 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 121 CAUTION: Use the part number to order part, not the position number. 630J 630J 600J 600G 600I 600H 630F 630B 600A 630C 611A 607A 600C 630A 630H 630D 630E 630Q 630G Copyright © 2016 - 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.
  • Page 122 P/No. MFL68488649 APR., 2017 Printed in Korea...

This manual is also suitable for:

Lfxs30796dAsbcna0Asbcna1

Table of Contents