LG LFC20770SB Service Manual
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LG LFC20770SB Service Manual

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REFRIGERATOR
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
MODELS:
LFC20770SB
LFC20770SW
LFC20770ST
LFC20786SW
LFC20786ST
LFC20786SB

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Questions and answers

jamshid
May 27, 2025

Water accumulation under the freezer

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1 comments:
Mr. Anderson
May 27, 2025

Water accumulation under the freezer in an LG LFC20770SB refrigerator can be caused by air and humidity inside the package condensing and forming ice crystals. If these crystals melt, they may cause water buildup. Additionally, condensation from improperly cooled warm foods or poor ventilation during freezing may contribute to water accumulation.

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Summary of Contents for LG LFC20770SB

  • Page 1 REFRIGERATOR SERVICE MANUAL CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. MODELS: LFC20770SB LFC20770SW LFC20770ST LFC20786SW LFC20786ST LFC20786SB...

  • Page 2: Table Of Contents

    CONTENTS SAFETY PRECAUTIONS ......................1. SPECIFICATIONS ....................... 2. PARTS IDENTIFICATION ....................3. DISASSEMBLY ........................3-1 Fan and Fan Motor......................3-2 Defrost Control Assembly....................3-3 LED..........................3-4 Display....................3-5 Multiduct.......................... 3-6 Cover Valve........................3-7 Door Disassembly......................3-8 How to remove the Door Handle..................3-9 How to remove the Pillar....................

  • Page 3: Specifications

    1. SPECIFICATIONS MODELS LFC20770SB LFC20770SW LFC20770ST LFC20786SW LFC20786SB LFC20786ST SPECIFICATIONS Color BLACK WHITE STAINLESS WHITE BLACK STAINLESS Dimensions 29.8(W) x 32.2(D) x 68.4(H) in Net Weight 111 Kg Capacity 20 cu.ft. Refrigerant R134A Climate Class TEMPERATURE (N) Rated Rating 115 V/60Hz...
  • Page 4 DIMENSIONS Description LFC20770** Depth w/ Handles 34 ¾ 32 ¼ Depth w/o Handles Depth w/o Door 28 ¼ Depth (Total with Door Open) Height to Top of Case Height to Top of Door Hinge Width 29 ¾ 38 ¼ Width (door open 90 deg. w/o handle) Width (door open 90 deg.

  • Page 5: Parts Identification

    2. PARTS IDENTIFICATION Use this section to become more familiar with the parts and features. NOTE: This guide covers several different models. The refrigerator you have purchased may have some or all of the items listed below. The locations of the features shown below may not match your model. Ice Maker ** Digital Sensor Control Ice Bin...

  • Page 6: Disassembly

    3. DISASSEMBLY 3-1 FAN AND FAN MOTOR 3-3 LED 3-3-1 REFRIGERATOR COMPARTMENT LAMP 1. Remove the freezer shelf. (If your refrigerator has an Unplug, or disconnect power at the circuit breaker. icemaker, remove the icemaker first). If necessary, remove top shelf or shelves. 2.

  • Page 7: Display

    3-4 DISPLAY 3-5 MULTI DUCT 1. Remove an upper and lower Cap by using a flat IMPORTANT: Before you begin, unplug your refrigerator. screwdriver, and loosen 2 screws. 1. To disassemble, remove the cover hinge from any door. 2. Disconnect the lead wire on the botton position. Left Door Release the two screws from the upper lid (1) remove it after that.

  • Page 8: Cover Valve

    3-6 VALVE COVER (in some models) 3-6-2 ASSEMBLE 3-6-1 DISASSEMBLE 1. Insert the ribs to the right side of the back cover hole 1. Unscrew the back cover. from the back side. 2. Screw the valve cover 2. Unscrew the valve cover from the back side.

  • Page 9: Door Disassembly

    3-7 DOOR DISASSEMBLY 1. To remove Refrigerator door IMPORTANT: Before you begin, turn the refrigerator OFF and Right Door Unplug it. Remove all food and the shelves from the doors. Left Door NOTE: The appearance of the handle might be different. With the Philips screw driver, loose the two screws from the upper lid (1) remove it after that.
  • Page 10 Front view of the harness Right Door Loose the grounding screw (9) and the pins (10) located over the hinge, after, lift the hinge and remove it (11). Place the hinge in its original position (4) assembly the two pins (5) and the ground screws (6). Remove the door and place it over its inner face to avoid scratching.

  • Page 11: How To Remove The Door Handle

    Plug the cable to the switch (16) (just in case if you Left Door unplugged the switch). Take the left door and place it over the hinge (11). Place the hinge's lid (17) and screw the two screw (18). Check that the door is well installed. Be sure that the hook (12) located in the upper part of the door) matches with the pillar of the refrigerator (13).
  • Page 12 3. To install the freezer's handle 1. To install the handle of the refrigerator Install the mounting screws over the door (1) place the Install the mounting screws over the door (1) place the handle over them (2) and tight the screws up (3). handle over them (2) and tight the screws up (3).

  • Page 13: How To Remove The Pillar

    3-9 HOW TO REMOVE THE PILLAR IMPORTANT: Before you begin, unplug your refrigerator. 1. Remove the 2 screw with a screwdriver. 2. Pull the pillar up to get it out from the hook. 3. Unplug the connector to release the pillar.. NOTE: To assemble, follow the instruction above, at inverse order.

  • Page 14: How To Remove Pull Out Drawer

    3-10 HOW TO REMOVE PULL OUT DRAWER IMPORTANT: To avoid possible injury or damage to the • With both hands, hold the center of the bar and push it product or your property, please use two people to perform in so that it is fit to both rails simultaneously. the following instructions: 1.
  • Page 15 • Mount door supports (1) into the tabs on the railing track (2), starting in the back first and then connecting the part in the front last, as shown in the figure. • Push the drawer down into position and tighten the screws (3).

  • Page 16: Closing And Aligning The Doors

    3-11 CLOSING AND ALIGNING THE DOORS Aligning the Doors Closing the Doors If the spacing between the doors is uneven, follow the Your refrigerator has two front leveling screws, one on the instructions below to align them: right and one on the left. If your refrigerator seems unstable or if you would like the doors to close more easily, With one hand, lift up the door you want to raise at simply adjust the inclination of the refrigerator by following...

  • Page 17: Adjustment

    4. ADJUSTMENT 4-2-3 e-PTC-Applied Circuit Diagram 4-1 COMPRESSOR • Starting Method for the Motor 4-1-1 Role The compressor intakes low temperature and low pressure gas from the evaporator of the refrigerator and compresses OVERLOAD PROTECTOR this gas to high-temperature and high-pressure gas. It then delivers the gas to the condenser.

  • Page 18: Olp (Overload Protector)

    4-3 OLP (OVERLOAD PROTECTOR) 4-3-1 Definition of OLP cross section) (OVERLOAD PROTECTOR (1) OLP (OVERLOAD PROTECTOR) is attached to the Customer part Compressor and protects the Motor by opening the number Lot code/ 12345678 circuit to the Motor if the temperature rises and date code 330 FBYY -S1 BOX98...

  • Page 19: Operation Principle And Repair Method Of Icemaker

    5. OPERATION PRINCIPLE AND REPAIR METHOD OF ICE MAKER 5-1 OPERATION PRINCIPLE 5-1-1 Operation Principle of Icemaker Power Input Initial Control • Adjusts Ejector to Start Position with power on. Icemaking • Waits until water in the TRAY is frozen after Icemaker Control Starts operation.

  • Page 20: Icemaker Functions

    5-2 ICEMAKER FUNCTIONS 5-2-1 Start Position 1) When power is initially applied or reapplied after power is cut, it detects level of the TRAY after completion of MICOM initialization. The detecting lever moves up and down. 2) The level of icemaker tray is judged by output signal, high and low signal, of HALL SENSOR. Make the tray to horizontal by rotating ice ejection motor in normal or reverse direction so that High/Low signal can be applied to MICOM Pin (P22).
  • Page 21 MAXIMUM TILTING POINT Bank is not full HALL Sensor Output Signals Bank is full HALL Sensor Output Signals Ice checking AXIS LEVEL 30° Ice checking AXIS -32° -41° -53° -58° -80° -160° -170° -8°-0° -10° Lock Lock Ice ejection Icemaking original point 2±1 sec Horizontal...
  • Page 22 5-2-4 Test Icemaker Mode Test function starts when test switch is pressed for more than 3 seconds. User shouldn’t force operation while doing test mode, service or cleaning. Test switch will work only when ice tray its in horizontal position, not during ice ejection or water supplying. When pressing the Test Switch, feeler arm will sense and then ice tray will start ice ejection, after twisting, ice tray returns to initial position.

  • Page 23: Circuit Diagram

    6. CIRCUIT DIAGRAM CIRCUIT DIAGRAM - 22 -...
  • Page 24 CIRCUIT DIAGRAM - 23 -...

  • Page 25: Circuit Of Micom

    7. DESCRIPTION OF FUNCTION & CIRCUIT OF MICOM 7-1 FUNCTION 7-1-1 Function 1. When the appliance is plugged in, it is set to “4” for Refrigerator and “4” for freezer. You can adjust the Refrigerator and the Freezer control temperature by pressing the ADJUST button, 2.
  • Page 26 7-1-4 Alarm for Open Door 1. This feature sounds a buzzer when the freezer or refrigerator door is not closed within 1 minute after it is opened. 2. One minute after the door is opened, the buzzer sounds three times each for ½ seconds. These tones repeat every 30 seconds.

  • Page 27: Pcb Function

    7-2 PCB FUNCTION CON 7 CON 6 CON 5 CON 4 CON 8 CON 9 CON 2 CON 1 CON 3 - 26 -...

  • Page 28: Troubleshooting

    8. TROUBLESHOOTING 8-1. COMPRESSOR AND ELECTRIC COMPONENTS (Rated voltage Remove e-PTC-Starter Power Source. from compressor and measure voltage between Terminal C of compressor and terminal 5 or 6 of e-PTC. No voltage. Reconnect. Check connection condition. Replace OLP. Advise customer that Applied voltage isn't power supply needs to in acceptable range.

  • Page 29: E-Ptc And Olp

    8-2 e-PTC AND OLP Separate e-PTC-Starter Observation value is Normal operation of from Compressor and ±20% compressor is impossible 115V/60Hz : 6.8 or poor. measure resistance between No. 5 and 6 of e-PTC-Starter with a Tester. (Figure 1) Replace e-PTC- The resistance value Starter.

  • Page 30: Other Electrical Components

    8-3 OTHER ELECTRICAL COMPONENTS • Not cooling at all Check for open short or Compressor Cause incorrect resistance readings doesn't run. in the following components a. Starting devices Short, open, or broken. Poor contact b. OLP or shorted. Coil open or shorted. c.

  • Page 31: Service Diagnosis Chart

    8-4 SERVICE DIAGNOSIS CHART COMPLAINT POINTS TO BE CHECKED REMEDY No Cooling. • • Plug into the outlet. • Check if the power switch is set to OFF. • Set the switch to ON. • Check if the fuse of the power switch is shorted. •...

  • Page 32: Refrigeration Cycle

    8-5 REFRIGERATION CYCLE • Troubleshooting Chart TEMPERATURE STATE OF STATE OF THE CAUSE REMARKS OF THE THE UNIT EVAPORATOR COMPRESSOR PARTIAL Freezer Low flowing sound of A little higher • Refrigerant level is low due LEAKAGE compartment and Refrigerant is heard and than ambient to a leak.
  • Page 33 8-5-1 Sealed System Diagnosis “Not Cooling” Complaint All components operating, No airflow problems, Not frosted up as a defrost problem problem has been isolated to sealed system area Frost None Partial Pattern? Equalization Equalization Test Test Very Fast Very Slow Very Slow Fast Very Fast...

  • Page 34: Pcb Picture

    8.6 PCB Picture Main PCB P/No & MFG Picture CON7 CON6 CON5 CON4 EBR6411051 (2011.07~) CON1 CON3 CON12 - 33 -...
  • Page 35 Main PCB P/No & MFG Picture CON7 CON6 CON5 CON4 EBR6411052 (2011.07~) CON1 CON3 CON12 - 34 -...
  • Page 36 Display PCB P/No Picture Display PCB 6871JB2046C CON101, CON102 (harness, Joint) Display PCB 6871JB2047B CON101 (harness, joint) - 35 -...
  • Page 37 LED Lamps P/No Picture LED Lamp (R) EAV61711901 LED Lamp (F) EAV60892210 - 36 -...

  • Page 38: Troubleshooting With Error Display

    8.7 Troubleshooting With Error Display 1) Display Error Indication Code (Dot Display Type). Error Code Indication on Display panel: LED OFF LED ON ERROR INDICATION ITEM CONTENTS REMARKS Freezer Notch REF Notch Abnormal Freezer All LED OFF Sensor Abnormal All LED OFF Refrigerator Sensor Check for loose...
  • Page 39 1) Display Error Indication Code (Seven Segments Type) . ERROR INDICATION ITEM CONTENTS REMARKS REF Notch Freezer Notch Abnormal Freezer “Er” “FS” Sensor Abnormal “Er” “rS” Refrigerator Sensor Check for loose Wire open, Short connections on Abnormal Defrost “Er” “dS” Circuit, temperature Main PCB, Sensor...
  • Page 40 2) Abnormal Freezer Sensor (F) Checking flow Result & SVC Action Result SVC Action Check for loose connection in CON7 Firmly plugged Go to step 2 Plug firmly, then check again. Problem persist? Loose YES: go to step 2 NO: explain to customer. 1-.
  • Page 41 Checking flow Result & SVC Action 1-. Twist wire ends. Result SVC Action 2-. Check resistance value. Open Circuit Replace Refrigerator Unit. Put a new sensor for Freezer 0Ù compartment. *Representative picture. - 40 -...
  • Page 42 3) Abnormal Refrigerator Sensor (R) Checking flow Result & SVC Action Check for loose connection in CON7 Result SVC Action Firmly plugged Go to step 2 Plug firmly, then check again. Problem persist? Loose YES: go to step 2 NO: explain to customer. 1-.
  • Page 43 Checking flow Result & SVC Action 1-. Twist wire ends. Result SVC Action 2-. Check resistance value. Other Value Replace Refrigerator Unit. Put a new sensor for Refrigerator 0Ù compartment. *Representative picture. - 42 -...
  • Page 44 4) Abnormal Defrost Sensor (D) Checking flow Result & SVC Action Check for loose connection in CON7 Result SVC Action Firmly plugged Go to step 2 Plug firmly, then check again. Problem persist? Loose YES: go to step 2 NO: explain to customer. 1-.
  • Page 45 Checking flow Result & SVC Action 1-. Unplug Defrost Controller Assembly. Result SVC Action 2-. Check resistance value between 7.15~ 86KÙ Go to step #5 wires orange to orange. Other Value Replace Defrost Controller Assembly 0Ù or open NOTE 1: Be sure that resistance value measurement match with real Evaporator temperature (Refer to D - Sensor chart).
  • Page 46 5) Abnormal Defrost Sensor (RT) Checking flow Result & SVC Action Check for loose connection in CON8 Result SVC Action Firmly plugged Go to step 2 Plug firmly, then check again. Problem persist? Loose YES: go to step 2 NO: explain to customer. 1-.
  • Page 47 Checking flow Result & SVC Action 1-. Cut Room temperature Sensor. Result SVC Action Open Circuit Go to step #5 Other Value Replace Refrigerator unit. 2-. Strip the wire ends. 3-. Check resistance value between wires *Representative picture. brown to brown in CON8. NOTE: Keep wire ends separated during measurement.
  • Page 48 6) Abnormal Ice Maker Sensor Checking flow Result & SVC Action Check for loose connection in CON9 Result SVC Action Firmly plugged Go to step 2 Plug firmly, then check again. Problem persist? Loose YES: go to step 2 NO: explain to customer. 1-.
  • Page 49 Checking flow Result & SVC Action 1-. Unplug Ice Maker Kit. Result SVC Action 2-. Check resistance value between wires 1.8 ~ 25KÙ Go to step #5 white to white. Other Value Replace Ice Maker Kit 1-. Keep Ice Maker kit unplugged Result SVC Action 2-.
  • Page 50 Checking flow Result & SVC Action 1-. Release short circuit Result SVC Action Open Circuit Replace Main PCB Other Value Replace Refrigerator Unit. 2-. Check the resistance value in CON9 wires gray to gray. - 49 -...
  • Page 51 7) Abnormal Ice Maker Kit Checking flow Result & SVC Action Check for loose connection in CON9 Result SVC Action Firmly plugged Go to step 2 Plug firmly, then check again. Problem persist? Loose YES: go to step 2 NO: explain to customer. 1-.
  • Page 52 Checking flow Result & SVC Action Check voltage between black & yellow Result SVC Action wires. 5VDC Go to step #4 0VDC Replace Main PCB 1-. Execute I/M TEST MODE. Result SVC Action +/- 9.5VDC Go to step #5 0~1VDC Replace Main PCB TEST SWITCH...
  • Page 53 Checking flow Result & SVC Action 1-. Unscrew Ice Maker Kit. Result SVC Action 2-. Check for loose connection in Ice Firmly plugged Go to step 6 Maker Kit. Plug firmly, then check again. Problem persist? Loose YES: go to step 2 NO: explain to customer.
  • Page 54 8) Abnormal Defrosting Operation (dH) Checking flow Result & SVC Action Check for loose connection in CON2 Result SVC Action Firmly plugged Go to step #2 Plug firmly, then check again. Problem persist? Loose YES: go to step #2 NO: explain to customer. 1-.
  • Page 55 Checking flow Result & SVC Action Result SVC Action 1-. Execute TEST MODE #2. 2-. Check voltage between black wires. 110~120VAC Go to step #6 0~10VAC Go to step #5 1-. Unplug Defrost Controller Assembly. Result SVC Action 2-. Check continuity between Brown and 0Ù...
  • Page 56 9) Abnormal Freezer Fan Motor Operation (FF) Checking flow Result & SVC Action Check for loose connection in CON4 Result SVC Action Firmly plugged Go to step #2 Plug firmly, then check again. Problem persist? Loose YES: go to step #2 NO: explain to customer.
  • Page 57 Checking flow Result & SVC Action 1-. Remove Rails and Evaporator Cover. Result SVC Action 2-. Check for any loose connection. Firmly plugged Go to step #5 Plug firmly, then check again. Problem persist? Loose YES: go to step #5 NO: explain to customer.
  • Page 58 Checking flow Result & SVC Action 1-. Unplug Freezer Fan in Freezer Result SVC Action Compartment. 0VDC Replace Main PCB 5VDC Replace Fan Motor. 2-. Execute TEST MODE #1 3-. Check Voltage in CON4 between wires White and Purple. - 57 -...

  • Page 59: Troubleshooting Without Error Display

    8.8 Troubleshooting Without Error Display 1) Ice maker doesn’t making Ice Cubes. Checking flow Result & SVC Action Check if Ice Maker is turned ON Result SVC Action Go to step #2 1) Turn ON. 2) Execute I/Maker TEST MODE. 3) Check if tray ice was filled with water after I/Maker TEST MODE: YES ?
  • Page 60 Checking flow Result & SVC Action Result SVC Action 1-. Remove cover of Machine Room. Firmly plugged Go to step #5 Loose Plug firmly, then, go to step #5 2-. Check for loose connection between harness and ice valve. 1-. Execute I/Maker TEST MODE. Result SVC Action 2-.
  • Page 61 2) Freezer LED Lamp not working Checking flow Result & SVC Action Check for loose connection in CON6 Result SVC Action Firmly plugged Go to step #2 Plug firmly, then check again. Problem persist? Loose YES: go to step #2 NO: explain to customer.
  • Page 62 Checking flow Result & SVC Action 1-. Remove Cover LED LAMP. Result SVC Action 2-. Check Voltage between Red and 11~12VDC Check in released condition. Freezer Door Black wires as is shown in the picture. S/W pressed 0VDC Replace Door Switch 0VDC Replace LED Lamp Freezer Door...
  • Page 63 3) Refrigerator LED Lamp not working Checking flow Result & SVC Action Check for loose connection in CON6 Result SVC Action Firmly plugged Go to step #2 Plug firmly, then check again. Problem persist? Loose YES: go to step #2 NO: explain to customer.
  • Page 64 Checking flow Result & SVC Action 1-. Remove Case LED LAMP. Result SVC Action 2-. Check Voltage between Red and 11~12VDC Check in released condition. Left Door S/W Black wires as is shown in the picture. pressed 0VDC Replace Door Switch (Left) 0VDC Go to step #5 Left Door...
  • Page 65 4) Poor cooling in refrigerator section. Checking flow Result & SVC Action 1-. Execute TEST MODE #1. Result SVC Action 2-. Press and Hold Refrigerator door Wind Go to step #6 switch (both). 3-. Check for air flow trough Duct No Wind Go to step #2 assembly.
  • Page 66 Checking flow Result & SVC Action Result SVC Action 1-. Unscrew Duct assembly. 2-. Check for loose connection . Firmly plugged Go to step #4 Plug firmly, then check again. Problem persist? Loose YES: go to step #4 NO: explain to customer. Result SVC Action 1-.
  • Page 67 Checking flow Result & SVC Action 1-. Check continuity between Duct Result SVC Action Assembly receptacle and CON4 Continuity in all wires Go to step #6 connector. No Continuity in any wire Replace refrigerator unit Result SVC Action 1-. Connect CON4 to Main PCB. 2-.
  • Page 68 Checking flow Result & SVC Action 1-. Press ICE PLUS and FREEZER TEMP Result SVC Action keys for more than 3 Seconds and check Error Present. Proceed according Error. for any error present in the refrigerator. No Error Present Go to step #8 Result SVC Action 1-.
  • Page 69 5) Over cooling in refrigerator section. Checking flow Result & SVC Action 1-. Unplug CON7 Connector. Result SVC Action 2-. Check resistance value between Match Replace Main PCB White to White wires. 3-. Check the corresponding Replace Sensor (Refer to R-Sensor No Match Error.
  • Page 70 6) Poor cooling in Freezer section. Checking flow Result & SVC Action 1-. Remove Refrigerator Sensor Cover. Result SVC Action 2-. Check if Refrigerator sensor is Correct position Go to step #2 correctly mounted. Incorrect position Fix sensor position, then go to step #2 1-.
  • Page 71 Checking flow Result & SVC Action 1-. Plug CON7. Result SVC Action 2-. Check voltage between blue to blue Match Go to step #4 wires. 3-. Check the corresponding No Match Replace Main PCB temperature for measure voltage. 4-. Verify if equivalent temperature <F-Sensor Temperature chart and equivalencies>...
  • Page 72 Checking flow Result & SVC Action Result SVC Action 1-. Remove Cover of Machine Room 110~120VAC Go to step #6 Other Value Replace Refrigerator Unit 2-. Check voltage between Black and Blue wires as is shown in the picture. 1-. Remove Cover PTC from Compressor. Result SVC Action Fix connectors, check if the problem...
  • Page 73 7) Over cooling in Freezer section. Checking flow Result & SVC Action Result SVC Action 1-. Remove Refrigerator Sensor Cover. 2-. Check if Refrigerator sensor is Correct position Go to step #2 correctly mounted. Incorrect position Fix sensor position, then go to step #2 1-.
  • Page 74 Checking flow Result & SVC Action Result SVC Action 1-. Plug CON7. 2-. Check voltage between blue to blue Match Check for Gap in Gaskets wires. No Match Replace Main PCB 3-. Check the corresponding temperature for measure voltage. 4-. Verify if equivalent temperature <F-Sensor Temperature chart and equivalencies>...
  • Page 75 8) Refrigerator apparently doesn’t work. Checking flow Result & SVC Action Result SVC Action 1-. Check that Refrigerator unit is correct plugged to energy source. All Correct Go to step #2 2-. Check voltage from energy source. Irregularities Explain to Customer 3-.
  • Page 76 9) Water Condensation on Refrigerator Pillar. Checking flow Result & SVC Action Result SVC Action 1-. Reset the refrigerator (unplug powercord, wait 10 seconds, plug 110~120VAC Go to step #2 powercord. 0~10VAC Replace Main PCB. 2-. Wait until Compressor operates. 3-.
  • Page 77 Checking flow Result & SVC Action Result SVC Action 1-. Remove bottom basket from Left refrigerator door. Loose Connection Plug correctly, check again Firmly connected Go to step #5 2-. Remove Cover. 3-. Check for loose connection 1-. Check for voltage between yellow Result SVC Action and black wires.
  • Page 78 Checking flow Result & SVC Action Result SVC Action 1-. Unscrew pillar. 110~120VAC Replace Pillar. 0~10VAC Replace Refrigerator Door (Left) 2-. Remove Pillar. 3-. Check voltage between Red to Red wires. - 77 -...
  • Page 79 10) Door Alarm never stops Checking flow Result & SVC Action 1-. Press and hold Refrigerator door Result SVC Action switch (Left). 5VDC Check released condition Pressing Door 2-. Press / Release Refrigerator Door Switch Switch (Right). 0VDC Go to step #3 3-.
  • Page 80 Checking flow Result & SVC Action 1-. Unplug the refrigerator. Result SVC Action 2-. Remove cover hinge (Left) Check for damage on wires near to 3-. Check continuity between Gray to cover hinge. Gray wires. Pressing 0Ù No Damage: Replace Door Switch Door Damaged: Fix if it’s possible, explain Switch...
  • Page 81 Checking flow Result & SVC Action 1-. Unplug the refrigerator. Result SVC Action 2-. Remove freezer door switch from Check for damage on wires near to refrigerator compartment. Freezer door Switch 3-. Check continuity between Pink to Pressing 0Ù No Damage: Replace Door Switch Pink wires.

  • Page 82: Appendix

    8.9 Appendix 1) Entering to Test Modes 1. How to make TEST MODE If you push the test button on the Main PCB, the refrigerator will be enter the TEST MODE Main PWB ** TEST MODE #1 Instructions Display Contents 1-.
  • Page 83 2) Entering to Test Modes ** TEST MODE #2 Instructions Display Contents 1-. Press TEST 1-. Compressor OFF SWITCH twice to 2-. Defrost Heater ON enter in this mode. 3-. CFAN OFF 4-. FFAN OFF 5-. Damper CLOSED (Step Motor) ** NORMAL OPERATION Instructions Display...
  • Page 84 3) TPA’s removing. 1. How to remove Terminal Position Assurance (TPA) <AC TPA> Lift snap (Right) Press hook (Right) Lift snap (Left) Press hook (Left) <DC TPA> Press Hook (Right) Press Hook (Left) Lift T.P.A. ? After measure the values, you MUST put in the TPA again. - 83 -...
  • Page 85 4) Temperature charts. Apply for D & R Sensors. Temperature Resistance (kÙ) Voltage (V)* °C °F -26.0 -14.8 104.60 4.00 -24.0 -11.2 94.30 3.92 -22.0 -7.6 85.14 3.83 -20.0 -4.0 76.96 3.73 -18.0 -0.4 69.66 3.64 -16.0 63.13 3.54 -14.0 57.29 3.44 -12.0...
  • Page 86 Apply for F & Ice Maker Sensor Temperature Resistance (kÙ) Voltage (V)* °C °F -26.0 -14.8 31.37 3.30 -24.0 -11.2 27.97 3.17 -22.0 -7.6 24.98 3.03 -20.0 -4.0 22.33 2.90 -18.0 -0.4 20.00 2.76 -16.0 17.94 2.63 -14.0 16.11 2.49 -12.0 10.4 14.49...
  • Page 87 Apply for RT Sensor. Temperature Resistance (kÙ) Voltage (V)* °C °F -26.0 -14.8 104.60 4.56 -24.0 -11.2 94.30 4.52 -22.0 -7.6 85.14 4.47 -20.0 -4.0 76.96 4.43 -18.0 -0.4 69.66 4.37 -16.0 63.13 4.32 -14.0 57.29 4.26 -12.0 10.4 52.05 4.19 -10.0 14.0...

  • Page 88: Exploded View

    #EV# 9.EXPLODED VIEW CASE PARTS CAUTION: use the part number to order part, not the position number. 103B 281A 402A 271C 282E 103A 503F 402A 501F 503E 271A 503C 903D 610A 282F 501A 282K 120B 411A 409B 304A 158A 282B 145B 301A 401A...
  • Page 89 #EV# FREEZER PARTS CAUTION: use the part number to order part, not the position number. 131A 136A 145C 237C 145F 136B - 87 -...
  • Page 90 #EV# REFRIGERATOR PARTS CAUTION: use the part number to order part, not the position number. 143A 140D 143B 140E 143A 140D 143B 140E - 88 -...
  • Page 91 #EV# REFRIGERATOR PARTS (PANTRY) Caution: Use the part number to order part, not the position number. 167B 154A 145J 151B 145G 151A 145H 154B 170A - 89 -...
  • Page 92 #EV# DOOR PARTS CAUTION: use the part number to order part, not the position number. 230A 230B 104E 231A 233A 231B 233B 212G 241C 104F 241C 212K 212K 241C 241C 244A 244A 212J 241D 212J 241D 212K 212K 286A 286A 243A 243A 243B...
  • Page 93 #EV# WATER & ICEMAKER PARTS CAUTION: use the part number to order part, not the position number. 600A 622B 627A 616E 619C - 91 -...
  • Page 94 June, 2011 MFL62526036...

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