3. disassembly
Contents
1. PWB PCB ASSEMBLY DISPLAY z sgg 1 2 3 4 5 6 7 8 9 E 2 9 amp a am 9 E 9 m PIPE HEATER CON101 n A ALL il a I EI algae Kx ald amp 6151413121 1141312111109 87 65 4131211 11109 87654131211 CON 5 CON 6 CON7 CON8 4 GY R DOOR S W 3 GY 9 BN 1 4 2 BN RT SENSOR SB 2 ee ee en d BN 3 NIC MEME PR 4 CON 9 10 60 M MOTOR F FAN 5 9 WH A WH 6 PWB PCB ASSEMBLY MAIN 8 YL FATE 7 7 BL IC cues Ba 6 BK YL 9 BN L WMTEST Siw RD 10 4 BO 11 3 BO STOP SAN PART 12 26 ___ V M SENSOR ICE MAKER UNIT Fig 2 2 Door Monitor Circuit LV Refrigerator Pin Number PinNumber Voltage R Door Open Con 8 Pin 3 Con 8 Pin 4 0 Volts pein 4 os gt ft 8 2 3 Temperature Sensor Circuit Refer to Figure 2 Voltage supplied to each sensor will range between 0 5 volts 22 F 30 C and 4 5 volts 122 F 50 C depending upon the temperature in the compartments A measurement of 0 volts indicates a short in the sensor circuit A measurement of 5 volts indicates an open in the sensor circuit 36 82. CON 1 11109817 6543 211 CON 2 CON 3 WH 918176 514131211 3211 BN BL PRBN 58 7 SB BILZEN i FRENCH DOOR HEATER Us POWER 09 m SUPPLY CORD Era a gr 0 D zd a m p We Pe J no amp DOOR S W R1 amp R2 EC H 8 ICE c 0 E D c Ko a a d amp PN ey at 80 COMP ACCESSORIES ea ETON TMTAGCESSORIES PLUG TYPE CAPACITOR PART P T C START OPTION DOOR HEATER THERMOSTAT RT SENSOR AND COMP ACCESSORIES ON CIRCUIT DIAGRAM ARE SUBJECT TO CHANGE IN DIFFERENT LOCALITIES AND MODEL TYPE er 9 PTC OLP 262439806 Fig 1 BLACK GN GREEN GY GRAY GN YL GREEN YELLOW YL YELLOW PK PINK WH WHITE BL WH BLUE WHITE SB SKY BLUE BO BRIGHT ORANGE BL BLUE BK WH BLACK WHITE BN BROWN PR PURPLE RD RED RD WH RED WHITE 8 2 2 Load and Door Light Circuit HV 1 Load Drive Condition Check To measure outputs of the control board check voltages between the pins for the following components Refer to Fig 1 Circuit Output Voltage Connector 1 Con 2 Pin 7 Con 1 Pin 3 115 VAC EARE COMP Heater Flamp Flamp Con 2 Pin 5 Con 1 Pin 3 svc VAC Connector 2 and or 3 ic
3. 16 4 ADJUSTMENT EP 17 4 1 NUIT SS SON 17 4 2 Pr uz cH 17 4 3 OLP overload protector 18 5 CIRCUIT DIAGRAM 22 19 b TROUBLESHOOTING qus dest au 20 6 1 Compressor and electric ER e E RAD 20 6 2 PTG and ETC ele ee ae ene 21 6 3 Other electrical components scccrsacciccsieresernsrencaseatnmnenmraumndidcacenmiieseasuansandianeheniasinaetecceted 22 6 4 Service diagnosis chart t M 23 Refigeration Cy OU M E o ooo 24 7 OPERATION PRINCIPLE AND REPAIR METHOD OF ICEMAKER 26 1 Principle RC E 26 1 2 VCS maker TUN CH ONG NENNT 27 8 CIRCUIT 0 inc onec aeter rne netur tama dec RO 30 8 1 FUNCION ap 30 8 2 PCB MUG audet ehbtaqis EEEE du tu ena PR HER I et dE End ENER 34 8 3 Resistance specification of sensor 38 S EXPLODED VIEW Ree ee r A
4. 43 LG Electronics Inc MFL62526033 February 2011 ECN04
5. 39 FASAFETY PRECAUTIONS Please read the following instructions before servicing your refrigerator 1 Check the refrigerator for current leakage 7 Before tilting the refrigerator remove all materials from on or in the refrigerator 2 To prevent electric shock unplug before servicing 8 When servicing the evaporator wear gloves to prevent injuries from the sharp evaporator 3 Always check line voltage and amperage fins 4 Use standard electrical components 9 Service on the refrigerator should be performed by a qualified technician Sealed 5 Don t touch metal products in the freezer system repair must be performed by a CFC with wet hands This may cause frost bite certified technician 6 Prevent water from spiling on to electric elements or the machine parts 1 SPECIFICATIONS SPECIFICATIONS GENERAL FEATURES REFRIGERATOR FREEZER MODELS Color Super White Dimensions Net Weight Capacity Refrigerant Climate class Rated Rating Cooling System Temperature Control Defrosting System Insulation Compressor Evaporator Condenser Lubricanting Oil Drier Capillary Tube First Defrost Defrost Cycle Desfrosting Device Anti freezing Heater Case Material Door Material PCM Handle Type Display Graphic Basket Quantity Ice Tray amp Bank Lamp Shelf Tray meat Egg Bank Basket Quantity Lamp Shelf LFC23760SW 04 LFC23760ST 04 LFC23760SB 04 Stainless Black 892 W x 925 D
6. LG REFRIGERATOR SERVICE MANUAL CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL MODELS LFC23760ST 04 LFC23760SW 04 LFC23760SB 04 ECN Engineering Change Number Rev 01 Change Cover Lower improve structure SVC Improvement opening door freezer Change connector rail in order to reduce claims for bad sealing and door misaligned New connector rail has 1 degree of inclination Rev 02 Valve inclined in order to improve house connection Rev 03 Change model to Barrierless type amp Twisting Ice Maker Rev 04 Compressor change from MQ53LAUM PTC to MQ53LAUM e PTC CONTENTS SAFETY PREG AU TIONG 3 1 SPECIFICATIONS mE 4 2 PARTS IDENTIFICATION 5 3 DISASSEMBLY EIE 6 3 1 Fan Fan MO IOT dU qaaa a araa aa du accu eA Aa glad EAE EEE EA REAA 6 3 2 Defrost Control ASSO ION tH 6 E e E E AE T AE T SE 6 3 4 Control Box Refrigerator RC m 7 S CQ are RR o ONT 7 3 0 Cov r NR UTE 9 Sov bles m 10 3 8 How to remove the Door 12 3 9 How to remove Pull out cadat acere eitg acu 14 3 10 Closing and aligning the ODE
7. gt Left Door Take the left door and place it over the hinge 11 Be sure that the hook 12 located in the upper part of the door matches with the splitter of the refrigerator 13 Check that the sealing patch of the door ends leveled with the refrigerator and that it isn t bended Left Door Place the hinge in its original position 14 and place the two screws 15 12 Plug the cable to the switch 16 just in case if you unplugged the switch Place the hinge s lid 17 and screw the two screw 18 Check that the door is well installed 3 8 HOW TO REMOVE DOOR HANDLE Loose the screws 1 with the Allen tool 3 32 and remove the handle 2 Remove the mounting screws with the Allen tool 3 Mounting Screws Screws Allen Wrench 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 3 To install the freezer s handle Mounting Screws Screws Allen Wrench 2 To remove the freezer s handle With an 3 32 Allen tool loose the screws 1 located on the bottom of the handle remove it 2 remove the screws from the door 3 with an 74 Allen tool 13 3 9 HOW TO REMOVE PULL OUT DRAWER IMPOR
8. 3 RESISTANCE SPECIFICATION OF SENSOR TEMPERATURE DETECTED RESISTANCE OF FREEZER RESISTANCE OF REFRIGERATOR SENSOR SENSOR DEFROST SENSOR amp ROOM SENSOR 20 C 22 3 KQ 77 KO 15 C 16 9 60 KO 10 C 13 0 47 3 5 C 10 1 KO 38 4 0 7 8 KO 30 KO 5 C 6 2 KO 24 1 KO 10 C 4 9 KO 19 5 15 C 3 9 KO 15 9 20 C 3 1 KO 13 KO 25 C 2 5 KO 11 KQ 30 C 2 0 KO 8 9 KO 40 C 1 4 KO 6 2 KO 50 c 0 8 KO 4 3 KO The resistance of the SENSOR has a 5 common difference Measure the resistance of the SENSOR after leaving it for over 3 minutes in the measuring temperature This delay is necessary due to sensor response speed 38 CAUTION Use the part number to order part not the position number 9 EXPLODED VIEW CASE PARTS EV NEN A XY WH EV FREEZER PARTS Use the part number to order part not the position number CAUTION EV REFRIGERATOR PARTS CAUTION Use the part number to order part not the position number EV CAUTION Use the part number to order part not the position number DOOR PARTS s gt EV ICEMAKER PARTS CAUTION Use the part number to order part not the position number
9. compressor and check resistance value between two terminals of OLP whit a tester Shows continuity Open Check another electric component Figure 2 21 6 3 OTHER ELECTRICAL COMPONENTS Not cooling at all Compressor Check for open short or doesn t run E incorrect resistance readings Cause in the following components a Starting devices Short open or broken Poor contact or shorted b OLP c Compressor coil 3 Coil open or shorted d Wiring harness Poor contact Replace or shorted indicated component Poor cooling performance Compressor runs poorly Check starting Low voltage Advise customer that voltage the power supply needs to be checked by an electrician Check voltage at Poor or broken or starting devices open contact indicated component Check current flowing in sub coil of Compressor Check rating of OLP I Lack of capacity Shorted Fan motor doesn t run Wire is open or shorted Check wiring circuit Replace indicated component Coil is shorted or open Check Fan Motor Heavy frost buildup on evaporator Replace Open indicated component Check current flow in the fo
10. pin Fig 2 18 5 CIRCUIT DIAGRAM CIRCUIT DIAGRAM PWB PCB ASSEMBLY DISPLAY OR PIPE HEATER S SENSOR faa o e a ore l i TL ale R SENS D S e 1 9 86 6 5 4 2 BL BL WH BO ICE MAKER STOP S W POWER FUSE M DEF HEATER THERMOSTATI THERMOSTAT2 r 4 ALTERNATIVE COMP P T C OPTION ACCESSORIES z PTAC OPTION O U O SUE ASEESSA ES PLUG TYPE CAPACITOR PART P T C START E Hum af OPTION DOOR HEATER THERVOSTATI THERMOSTAT2 RT SENSOR AND COMP ACCESSORIES ON CIRCUIT DIAGRAM ARE SUBJECT TO CHANGE IN DIFFERENT LOCALITIESAND MODEL TYPE COMBO KIT PTC OLP 762439817 M SENSOR LACK GN YL GREEN Y BLUE WH ELLOW z a E BL W 19 I Y BLUE HT ORANGE BK W SLACK WH ROWN z E RD WH D WHI 1 IM TEST S W S W PART AKER UNIT 6 TROUBLESHOOTING 6 1 COMPRESSOR AND ELECTRIC COMPONENTS Check resistance of motor compressor Check resistance of PTC Starter Power Source Remove PTC Starter from c
11. 26 7 2 ICEMAKER FUNCTIONS 7 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 3 If there is no change in signals one minute after the geared motor starts to operate it stops icemaker operation and check the signal every hour It resets initialization of icemaker when it becomes normal Ice ejection conducts for 1 cycle 7 2 2 Icemaking Mode a Ice making control is carried out from the completion of water supply to the completion of ice making in the TRAY Ice making sensor detects the temperature of TRAY and completes ice making Ice making sensor is fixed below the TRAY b Ice making control starts after completion of water supply control or initial control Under the ice making control the F room temperature should be operated with the NOTCH of Normal Strong C It is judged that ice making is completed when ice making sensor temperature reaches at 8 C after 70 minutes 10 minutes when water is supplied to the TRAY 7 2 3 Ice Ejection Mode a This is to eject ice from the TRAY after ice making is completed b If Hall IC signal is on
12. 9 oto EA d D5 03 05 2 TRS 8 ed TQ e Q sud u et to 21 g AA Ee N Rig Raz D 10 62000008 34 te E7 8 8 gf 9200009 M g 3 te NS e D CONG 5 I oed 2 n Q all t3 m 198 E CEI6 ICi CONS all opu Q Lo H lo ES 2 E of Es E J T e Bit woe y 5 Eis CONIO ZR TESTSW 4 26 IE OQ jj ol fe CMI E Q Q 00 m o 9 ns o Gitte Otte l 2 fo 2 BN o 7 o o 2 FUSE AD FUSE1 SPEC Lu iic e 2 Q 115 127V 250V 15A 2 ose 225 355 590 485 iu Eo CONI s y CON3 y CON2 v o o o o o Qo TA ue coe FD HTR E LAMPS E 4 CON 8 lt CON 9 lt CON 10 8 2 1 Power Circuit Power is supplied to the control board at the pin 11 and 9 of connector 1 Refer to figure 1
13. ADJUST key of refrigerator temperature control are pressed for more than 3 seconds at the same time temperature s it converts to demostration mode 2 In this status each LED is rotated with 1 second interval 3 In this status all Loads are off Compressor Fan Damper Heater Even is Demonstration Mode the refrigerator Lamp automatic off function works normally and can be demostrated 4 It reset if you do again as clause 33 8 2 PCB FUNCTION E CON 7 CON 6 CON 5 CON 4 Fagrp sepese SCIUNT TTS LE ene N fi fc Sn 1 ne fc 7299 9999092099999 90990 599900009990 CON Ta Ta Ta CONG i CONS o b A 10
14. DER MAJAGA gt WARMER FREEZER TEMP 41S RECOMMENDED COLDER ADJUST ERROR CODE on display panel LEDOFFLEDON No ITEM ERROR INDICATION CONTENTS REMARKS Failure of Freezer All Off ooo0oo O Cut or short circuite wire 2 a of Refrigerator All off Oo e o o o o o Cut or short circuite wire Inspect Connecting 3 d All Off e oO O O O Cut or short circuite wie Wires on each sensor 4 RT sensor error All Off O 0 O O Cut or short circuite wire Snapping of defrost Failure of Defrost Villen getrostisensor does ie pes 5 au All Off not reach 8 C within 1 hour 1 59 Mode connector indicated after starting defrost minimum 2h after failure occurs Poor motor hooking to Failure of BLDC fan If there is no fan motor wires of fan contact of 6 motor at freezing All Off ooo O O O signal for more than 115s in structures to fan compartment operation fan motor snapping or short circuit of Lead wires Failure of Icemaker Snapping or short circuit of Connecting Wire Test 7 All Off Sensor 0000060020 ice making sensor On Sensor Failure of wires such as When the ice ejecting 8 Failure of Icemaker Kit All Off oooooeo0 motor in I M KIT GEAR 9085 not operated on HALL IC pressing the I M TEST S W Primary Error F sensor R1 sensor D sensor Defrost errors F FAN errors Seconda
15. LUS 1 The purpose of this function is to intensify the cooling speed of freezer and to increase the amount of ice 2 Whenever selection switch is pressed selection release the LED will turn ON or OFF 3 If there is a power cut and the refrigerator is power on again ICE PLUS function will be canceled 4 To activate these function you need to press the ICE PLUS key and the LED will turn ON This function will remain activated for 24 hrs The first three hours the compressor and ICE PLUS will be ON The next 21hours the freezer will be controlled at the lowest temperature After 24 hours or if the ICE PLUS key is pressed again the freezer will return to its previous temperature 5 For the first three hours notice the following cases 1 Compressor and freezer fan HIGH RPM continuously operate for three hours 2 If defrost starts during ICE PLUS ICE PLUS operates for the rest of time after defrost is completed when ICE PLUS operation time is less than 90 minutes If ICE PLUS operates for more than 90minutes the ICE PLUS will operate for two hours after defrost is completed 3 If ICE PLUS is pressed during defrost ICE PLUS LED is on but this function will start seven minutes after defrost is completed and it shall operate for three hours 4 If ICE PLUS is selected within seven minutes after compressor has stopped the compressor compressor delays seven minutes shall start after the balance of the delay time 5 The fan motor in the freezer
16. M TILTING POINT Bank is not full HALL Sensor Output Signals Bank is full HALL Sensor Output Signals OFF Ice checking AXIS 8 0 10 32 41 53 58 80 160 170 Lock Lock Icemaking Ice ejection original point 2 1 sec Horiz 9 3 sec Return Cond 8 3 ditions 28 7 2 4 Test 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 When returning to horizontal position water supply will start filling the ice tray After this test mode its done Test mode cycle elapsed time of 30 seconds its shown as the next sequence Feeler arm sensing Ice ejecting Ice tray returns to horizontal position Water supply 7 2 5 Water Supply Function This function is for supply water to tray by the mechanic water valve when ice ejecting finish and tray return to initial position Water supply quantity depend of DIP S W Water Supply Time Table DIP S W Setting will be depend of FF 10 0 water pressure If water supply setting is changed while system is en
17. Pull out the fan and separate the Fan Motor and Bracket GRILLE 3 2 DEFROST CONTROL ASSEMBLY Defrost Control assembly consist of Drefrost Sensor and FUSE M The Defrost Sensor works to defrost automatically It is attached to the metal side of the Evaporator and senses its temperature Fuse M is safety device for preventing over heating of the Heater when defrosting At 72 C it turns the Defrost Heater off 1 Pull out the grille assembly Fig 1 2 Separate the connector with the Defrost Control assembly and replace the Defrost Control assembly after cutting the Tie Wrap Fig 2 GRILLE ASSEMBLY DEFROST CONTROL ASSEMBLY 3 3 LAMP 3 3 1 REFRIGERATOR COMPARTMENT LAMP 1 Unplug your refrigerator 2 Pull out all of the shelves 3 Slide a flat screwdriver 1 into the opening of the light bulb and pull it downwards 2 ED SI e 4 Turn the bulb counter clockwise and remove it 5 Install the new light bulb 6 Take the cover 1 lock the hooks 2 from the rear part of the light bulb and push it upwards 3 3 3 2 FREEZER COMPARTMENT LAMP 1 Unplug refrigerator 2 Unlock the cover of the light bulb using your thumbs 2 3 Remove the light bulb and replace it with a new one 4 Take the cover 3 lock the hoo
18. TANT To avoid possible injury or damage to the With both hands hold both sides of the door and pull up product or your property please use two people to perform to separate it the following instructions 1 Removing the Pull Out Drawer Pull the drawer out to maximum extension Remove the bottom rack 1 by tilting it back a little and then lifting it off the railing tracks With both hands hold the center of the bar and push it in so that it is fit to both rails simultaneously Put pressure on the two hangers 2 with your thumbs in order to lift it up e Separate the left and right rail cover ZN CAUTION When removing the drawer do not hold the handle If it comes off it could cause personal injury ZN CAUTION To place the drawer on the floor take care not to damage the floor or hurt your feet with the sharp edges on the side with the hinges 2 Installing the Pull Out Drawer With both hands hold the center of the bar and pull it outward so that the two rails extend out at the same time 14 Mount door supports 1 into the tabs on the railing Align the top holes of the rail cover with the top holes of track 2 starting in the back first and then connecting the door supports to mount the cover the part in the front last as shown in the figure Verify the hole s alignment Push the drawer down into position and tighten the screws 3 Wit
19. and the error code is displayed 6 While an error code is displayed the test mode will not be activated MODE MANIPULATION CONTENTS REMARKS Push ICE PLUS key and ADJUST key of 1 Continuous operation of the compressor Freezer Temperature at the and the freezer fan Maxi TESTI same time over 3s 2 Stepping Damper OPEN 5 Anite Or Push TEST switch on 3 Defrosting Heater OFF the main Board once 4 Display LED all ON lt Cooling MODE gt Push ICE PLUS key and ADJUST key of 1 Compressor and the freezer fan OFF Maximum test time Freezer Temperature at the gt CLOSE 2 hours TEST2 same time over 3 seconds epping amper Reset if the temperature in TEST MODE 1 3 Defrosting heater ON of the defrosting sensor Or Push TEST switch once 4 Display LED 1 3 5 7 ON is 8 C 46 F or more In TEST MODE 1 lt Forced desfrosting MODE gt Push ICE PLUS key and ADJUST key of Reset to Freezer Temp at the same Reset to initial status COMP 7 min delay Normal time over 3 seconds in TEST MODE 2 Freezer Fan RPM Variable Check In case the freezer fan is in operation when the ADJUST key in Refrigerator and Freezer Temp Control are pressed for more than one second at the same time freezer fan RPM changes for example if high speed to normal speed or if normal speed to high speed for 30 seconds After 30 seconds it turns to its original RPM Demonstration MODE 1 When the ICE PLUS key and
20. compartment rotates at high speed during ICE PLUS 6 For the rest of 21 hours the freezer will be controlled at the lowest temperature 8 1 4 Refrigerator Lamp Auto Off 1 To protect the risk of lamp heat when Refrigerator door opens for 7 min refrigerator lamp is auto off 30 8 1 5 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 1 2 seconds These tones repeat every 30 seconds 3 The alarm is cancelled when the freezer or the refrigerator is closed while the buzzer sounds Freezer Door Closed Open Closed Open or Refrigerator Door Closed 3Times 3Times 3 Times 3 Times H Buzzer _ gt 30sec 30 sec 30 sec Within 1 min 1 min 8 1 6 Buzzer Sound When the button on the front Display is pushed a Ding Dong sound is produced 8 1 7 Defrosting removing frost 1 Defrosting starts each time the COMPRESSOR running time reaches 7 hours 2 For initial power on or for restoring power defrosting starts when the compressor running time reaches 4 hours 3 Defrosting stops if the sensor temperature reaches 46 4 F 8 C or more If the sensor doesn t reach 46 4 F 8 C in 2 hours the defrost mode is malfunctioning Refer to the defect diagnosis function 8 1 9 4 Defrosting won t function if it
21. d frost isn t restoring the normal amount of refrigerator dont formed refrigerant and repairing the leak cool normally Freezer Flowing sound of refrigerant A little higher than Normal discharging of the PARTIAL ambient refrigerant 2 compartment RESTRICTION don t ud ee temperature The capillary tube is faulty zi cool normally O Freezer Flowing sound of refrigerant Equal to ambient Normal discharging of the 9 EE ids is not heard and frost isn t temperature refrigerant refrigerator don t formed cool MOISTURE Cooling operation Flowing sound of refrigerant Lower than ambient Cooling operation restarts when RESTRICTION stops periodically is not heard and frost melts temperature the inlet of the capillary Freezer and Low flowing sound of A little higher than Low pressure at high side of Qo COMPRE refrigerator don t refrigerant is heard and frost ambient compressor due to low 3m SSION cool forms in inlet only temperature refrigerant level 2 No pressure in the high i Flowing sound of refrigerant Equal to ambient 9 pressing 9 9 i COMPRE operation is not heard and there is temperature pressure part of the compressor 2 SSION frost 24 6 5 1 SEALED SYSTEM DIAGNOSIS Not Cooling Complaint All components operating No airflow problems Not frosted up as a defrost problem problem
22. e Maker Maker Con2Pin9 Con1Pin3 svae VAC Ice Def Valve Heater FLamp RLamp a Door Con 3 Pin 1 Con 3 Pin 3 115 VAC Heather NOTE When the door of the refrigerator is left open for 7 minutes or longer the lamp of the refrigerator turns off automatically 35 To measure the outputs of the sensors check the voltages between the pins as in the table And refer the values in the section RESISTANCE SPECIFICATION OF SENSOR Con 7 Pin 10 Con 7 Pin 11 Con 7 Pin 8 Con 7 Pin 9 D Sensor Con 7 Pin 6 Con 7 Pin 7 M Sensor Con 7 Pin 1 Con 9 Pin 2 RT Sensor Con8Pin 1 Con 8 Pin 2 To measure the outputs of the fans on the control boards check the voltages between the pins for the following components Output Voltage Con 4 Pins Con4Pin6 10 14Vdc 2Vdc or less Cooling Fan Con 4 Pin 3 10 14Vdc 2Vdc or less Connector 4 po Connector gt S S S PN 12 11 10 9 8 7 6 J 5 4 3 2 t Stepping Motor nc ie ne 8 2 4 ICE MAKER Connector 9 pen 1 9 e v ej s 4 3 P2 j Motor Hall IC Test S W I M Stop S W I M Sensor Stop S W Con 9 Pin 3 Con 9 Pin 4 0 5Vdc I M Test S W Con 9 Pin 5 Con 9 Pin 6 0 5Vdc Ts
23. e PTC device generates heat during operation Therefore it must be allowed to cool before the compressor can restart 4 2 5 Relation of PTC Starter and OLP 1 If the compressor attempts to restart before the PTC device is cooled the PTC device will allow current to flow only to the main winding 2 The OLP will open because of the over current condition This same process will continue 3 to 5 times when the compressor attempts to restart until the PTC device has cooled The correct OLP must be properly attached to prevent damage to the compressor Parts may appear physically identical but could have different electrical ratings Replace parts by part number and model number Using an incorrect part could result in damage to the product fire injury or possibly death 4 2 6 Note for Using the PTC Starter 1 Be careful not to allow over voltage and over current 2 Do not drop or handle carelessly 3 Keep away from any liquid If liquid such as oil or water enters the PTC PTC materials may fail due to breakdown of their insulating capabilities 4 If the exterior of the PTC is damaged the resistance value may be altered This can cause damage to the compressor and result in a no start or hard to start condition 5 Always use the PTC designed for the compressor and make sure it is properly attached to the compressor Parts may appear physically identical but could have different electrical ratings Replace parts by pa
24. ergized change will be made immediately But if change occurs when water supply function is working change will be executed next cycle of icemaker 7 2 6 Ice maker stop switch e Ice Maker Stop S W ON state Ice Maker normal operation Ice Maker Stop S W OFF state Ice Maker do not operate 29 8 CIRCUIT OF MICOM 8 1 FUNCTION 8 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 When the power is restored after a power failure it is automatically set to last setting selected Note To ERROR CODE on display panel refer to page 32 REFRIGERATOR TEMP ICE PLUS FREEZER TEMP gt Geena gt WARMER 41S RECOMMENDED COLDER WARMER 41S RECOMMENDED COLDER ADJUST 8 1 2 Control of freezer fan motor 1 Freezer fan motor has high and standard RPMs 2 High RPM is used when electricity is first on for ICE PLUS and when refrigerator is overloaded But standard RPM is used for general purposes 3 To improve cooling speed and load corresponding speed the RPM of freezer fan motor shall change from normal speed to high speed 4 High speed 2500RPM Initial power on or load corresponding operation ICE PLUS Normal speed 2200 RPM general working conditions 5 Fan motor stops when refrigerator of freezer door opens 8 1 3 ICE P
25. frigerator Light 9 Shelves Temperature Control Chef Fresh Snack Pan Q Can Dispenser Optibin Crisper Keeps fruits and vegetable fresh and crisp Icemaker 1 Ice Bin o Durabase Q Durabase Divider L Dairy Compartment M Egg Compartment Q Refrigerator Door Rack Freezer Light Pull out Drawer On some models Read this section to familiarize yourself with the parts and features of your new refrigerator NOTE This guid ecovers different models Your refrigerator could have some or all of the features and parts listed below The location of some of the parts may not correspond to that of your model Digital Sensor Control o Durabase o Refrigerator Light o Durabase Divider Q Shelves Q Dairy Compartment Chef Fresh Snack Pan L Egg Compartment Can Dispenser M Refrigerator Door Rack Q Optibin Crisper Freezer Light Keeps fruits and vegetable fresh and crisper Pull out Drawer Icemaker Ice Bin On some models 3 DISASSEMBLY 3 1 FAN AND FAN MOTOR 1 Remove the freezer shelf If your refrigerator has an icemaker remove the icemaker first 2 Remove the plastic guide for slides on left side by unscrewing phillips head screws 3 Remove the grille by removing one screw and pulling the grille forward 4 Remove the Fan Motor assembly by loosening 2 screw and disassemble the shroud 5
26. h the drawer fully extended insert the lower basket over the front part of the rail assembly and then the back part 4 FX WARNING prevent entrapment risk and accidental child or animal suffocation DO NOT permit them to play inside of the drawer FA WARNING DO NOT step ot sit on the Freezer Door 15 3 10 CLOSING AND ALIGNING THE DOORS Closing the Doors Your refrigerator has two front leveling screws one on the right and one on the left If your refrigerator seems unstable or if you would like the doors to close more easily simply adjust the inclination of the refrigerator by following the instructions below 1 Plug the refrigerator into a 3 prong grounded outlet Move the refrigerator into its final position 2 Remove the base grille Refer to the section on Installation of Base Grille 3 Use a flat head screwdriver to adjust the leveling screws turning clockwise to raise the side of the refrigerator and counter clockwise to lower it It may take several turns to adjust it to the inclination you would like NOTE Having someone push against the top of the refrigerator takes some weight off the leveling screws This will make it easier to adjust the screws MK P as 4 Open both doors again and check to make sure that they close easily If not slightly tilt the refrigerator further back by tu
27. has been isolated to sealed system area Frost Partial Pattern Equalization Test Equalization Test Very Fast Very Slow Very Slow Fast Very Fast Inefficient Compressor Complete Restriction Partial Restriction Condenser Cap Tube Temperature Sound Hotter than Normal Room Temperature None to Weak Air Low Side Loss of Change Leak Compressor Not Pumping Trace of Oil No Undercharge The equalization test is trying to restart a compressor after it has been operating 25 1 OPERATION PRINCIPLE AND REPAIR METHOD OF ICEMAKER 7 1 OPERATION PRINCIPLE 7 1 1 Operation Principle of Icemaker Power Input Initial Control Adjusts Ejector to Start Position with power on Waits until water in the TRAY is frozen after Icemaker Starts operation Icemaking Control Ice Ejection Control Water supply control TEST Control Performs Icemaking Mode after supplying water by operating the SOLENOID in ICE VALVE To operate LINE and SERVICE press and hold the Fill Key for 3 seconds The icemaking will run through 3 stages Harvest Fill Icemaking D Runs MOTOR to drop ice from the tray into the ICE BIN 1 Turning the Icemaker stop switch off O stops the icemaking function 2 Setting the Icemaker switch to OFF and then turning it back on will reset the icemaker control Power Switch Icemaker Feeler Arm
28. ks of it 4 and push it upwards 5 5 Plug the refrigerator back in 3 4 CONTROL BOX REFRIGERATOR 1 First remove all shelves in the refrigerator than remove the Refrigerator control Box by loosening 2 screws CONTROL BOX COVER LAMP 2 Remove the Refrigerator Control Box by pulling it downward 3 Disconnect the lead wire on the right position and separate the lamp sockets 3 5 MULTI DUCT 1 Remove an upper and lower Cap by using a flat screwdriver and loosen 2 screws 2 Disconnect the lead wire on the botton position 3 6 VALVE COVER in some models 3 6 1 DISASSEMBLE 3 6 2 ASSEMBLE 1 Insert the ribs to the right side of the back cover hole 1 Unscrew the back cover 2 Screw the valve cover from the back side 2 Unscrew the valve cover from the back side 9 3 a M UM 3 Screw the back cover 3 Push to the left and release 3 7 DOOR DISASSEMBLY 1 To remove Refrigerator door IMPORTANT Before you begin turn the refrigerator OFF and gt Right Door Unplug it Remove all food and the shelves from the doors gt 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 Unplug the switches cable 6 it s optional it s no neccesary do it fo
29. llowing components Sensor Fuse M Check current flow in the defrost heater Replace defrost heater 22 6 4 SERVICE DIAGNOSIS CHART COMPLAINT POINTS TO BE CHECKED REMEDY No Cooling Is the power cord unplugged from the outlet 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 Replace the fuse Measure the voltage of the power outlet If the voltage is low correct the wiring Cools poorly Check if the unit is placed too close to the wall Place the unit about 4 inches 10 cm from the wall Check if the unit is placed too close to the stove Place the unit away from these heat sources gas cooker or in direct sunlight s the ambient temperature too high or Lower the ambient temperature the room door closed Check if food put in the refrigerator is hot Put in foods after they have cooled down Did you open the door of the unit too often Don t open the door too often and close or check if the door is sealed properly it firmly Check if the Control is set to Warm position Set the control to Recommended position Foods in the s food placed in the cooling air outlet Place foods in the high temperature section Refrigerator front part are frozen Check if the control is set to colder position Set the control to Recommended position Is the ambient temperature be
30. low 41 F 5 C Set the control to Warm position Condensartion or ice forms inside the unit s liquid food sealed Check if food put in the refrigerator is hot Did you open the door of the unit too often or check if the door is sealed properly Seal liquid foods with wrap Put in foods after they have cooled down Don t open the door too often and close it firmly Condensartion forms in the Exterior Case Check if the ambient temperature and humidity of the surrounding air are high s there a gap in the door gasket Wipe moisture with a dry cloth It will disappear in low temperature and humidity Fill up the gap There is abnormal noise s the unit positioned in a firm and even place Are any unnecessary objects placed in the back side of the unit Check if the Tray Drip is not firmly fixed Check if the cover of the compressor enclosure in the front lower side is taken out Adjust the Leveling Screw and position the refrigerator in a firm place Remove the objects Fix the Tray Drip firmly in the original position Place the cover in its original position Door does not close well Check if the door gasket is dirty with an item like juice s the refrigerator level s there too much food in the refrigerator Clean the door gasket Position in the firm place and level the Leveling Screw Make sure food stored in shelves does n
31. ompressor and measure voltage between Terminal C of compressor and terminal 5 or 6 of PTC Rated voltage 10 No voltage YES OLP disconnected Check connection condition Replace OLP Applied voltage isn t in acceptable range 115V 10 Advise customer that power supply needs to be checked by an electrician Check the resistance between M C S C and M S in motor compressor Check resistance of two terminals in PTC Starter The range of resistance is between 1 50 Q ok Open or short Replace compressor At normal temperature 6 80 20 OK Check OLP Check resistance of two terminals in OLP If power conducts OK If not NG Check starting state Check the power supply under load Compressor attempting to re start after being off for 5 minutes YES YES Supply voltage rating with 10 Did Compressor compressor is OK start Replace the compressor NO 20 6 2 PTC AND OLP Normal operation of compressor is impossible or poor Separate PTC Starter from Compressor and measure resistance between No 5 and 6 of PTC Starter with a Tester Figure 1 Observation value is 115V 60Hz 6 80 20 Replace PTC Starter The resistance value is 0 O short or open Separate OLP from
32. or in your product 4 Keep Compressor dry If the Compressor gets wet in the rain or a damp environment and rust forms in the pin of the Hermetic Terminal poor operation and contact may result 5 When replacing the Compressor be careful that dust humidity and soldering flux don t contaminate the inside of the compressor Dust humidity and solder flux contaminate the cylinder and may cause noise improper operation or even cause it to lock up 4 2 PTC STARTER 4 2 1 Composition of PTC Starter 1 PTC Positive Temperature Coefficient is a no contact semiconductor starting device which uses ceramic material consisting of BaTiO3 2 The higher the temperature is the higher the resistance value These features are used as a starting device for the Motor 4 2 2 Role of PTC Starter 1 The PTC is attached to the Sealed Compressor and is used for starting the Motor 2 The compressor is a single phase induction motor Durign the starting operation the PTC allows current flow to both the start winding and main winding 17 4 2 3 PTC Applied Circuit Diagram Starting Method for the Motor OVERLOAD PROTECTOR L1 COMPRESSOR t 15 MOTOR M S M N a PTC STARTER SEALED TERMINAL Resistance Starter Capacitor Running Fig 1 4 2 4 Motor Restarting and PTC Cooling 1 It requires approximately 5 minutes for the pressure to equalize before the compressor can restart 2 Th
33. ot prevent the door from closing Ice and foods smell unpleasant Check if the inside of the unit is dirty Are foods with a strong odor unwrapped The unit smells of plastic Clean the inside of the unit Wrap foods that have a strong odor New products smell of plastic but this will go away after 1 2 weeks Other possible problems 23 Check if frost forms in Not Check Components the freezer gt defrosting gt of the defrosting circuit Check the The system Perform sealed refrigeration system is faulty system repair Check the The operation of Replace the Thermistor gt the Thermistor is gt Thermistor incorrect 6 5 REFRIGERATION CYCLE Troubleshooting Chart STATE OF STATE OF THE TEMPERATURE THE UNIT EVAPORATOR DE THE BENE COMPRESSOR Freezer Low flowing sound of A little higher than Refrigerant level is low due to a PARTIAL compartment and refrigerant is heard and frost ambient leak 2 _ LEAKAGE refrigeratordon t forms in inlet only temperature Normal cooling is possible by cool normally restoring the normal amount of refrigerant and repairing the leak O i No discharging of refrigerant Equal to ambient ging g i Freezer Flowing sound of refrigerant eae are Normal cooling is possible by compartment and is not heard an
34. r removing the door Unplug the switches cable 2 it s optional it s no neccesary do it for removing the door Unplug the cable harness pulling up the hook located in the upper part of it 7 and separate both parts of the harness 8 With the 10mm socket wrench loose the two pins from the hinge 3 and remove it 4 Upper view of the harness Place the door with the inner face over the surface so it won t scratch 10 Front view of the harness Right Door e 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 Plug the cable harness 7 and the switch 8 just in case 2 To install Refrigerator door if you unplugged the switch gt Right Door Take the door and place it gently over the pin of the V Place the hinge lid 9 and install both screws 10 Be E Pin sure the door is correctly assembled Be sure the hook 2 located in the upper part of the door matches with the divisor of the refrigerator s door 3 Check that the sealing patch of the door is leveled to the refrigerator and that it isn t bended 11
35. rning both leveling screws clockwise It may take several more turns Make sure that you turn both leveling screws the same amount 5 Ensure that the refrigerator is even by using a level 6 Replace the base grille 16 Aligning the Doors If the spacing between the doors is uneven follow the instructions below to align them 1 With one hand lift up the door you want to raise at middle hinge 2 With other hand use pliers to insert snap ring as shown 3 Insert additional snap rings until the doors are aligned Three snap rings are provided per unit 4 ADJUSTMENT 4 1 COMPRESSOR 4 1 1 Role The compressor intakes low temperature and low pressure gas from the evaporator of the refrigerator and compresses this gas to high temperature and high pressure gas It then delivers the gas to the condenser 4 1 2 Composition The compressor includes overload protection The PTC starter and OLP overload protector are attached to the outside of the compressor Since the compressor is manufactured to tolerances of 1 micron and is hermetically sealed in a dust and moisture free environment use extreme caution when repairing it 4 1 3 Note for Usage 1 Be careful not to allow over voltage and over current 2 If compressor is dropped or handled carelessly poor operation and noise may result 3 Use proper electric components appropriate to the Particular Compress
36. rt number and model number Using an incorrect part could result in damage to the product fire injury or possibly death 4 3 OLP OVERLOAD PROTECTOR 4 3 1 Definition of OLP 1 OLP OVERLOAD PROTECTOR is attached to the OVERLOAD PROTECTOR cross section Customer part Compressor and protects the Motor by opening the D rumoer circuit to the Motor if the temperature rises and date code activating the bimetal spring in the OLP dud Nd Physical part number termination part number 2 When high current flows to the Compressor motor the Bimetal works by heating the heater inside the OLP and the OLP protects the Motor by cutting off the current flowing to the Compressor Motor 4 3 2 Role of the OLP 1 The OLP is attached to the Sealed Compressor used for the Refrigerator It prevents the Motor Coil from being started in the Compressor Part No Name 2 For normal operation of the OLP do not turn the Adjust Base phenolic Movable arm spring temper Screw of the OLP in any way UL 94 V9 rated copper alloy Movable arm support Contact movable silver on copper plated steel Contact stationary silver on copper Stationary contact support Slug plated steel plated st el Cover polyester Heater support plated steel UL 94 V 0 rated Heater resistance alloy amp Pin connector plated copper alloy Disc thermostatic alloy To engage 2 33 2 66 mm dia
37. ry Error M sensors Kit RT sensor When an error occur the first 3 hours the Primary Error and Secondary Error is indicated in the display check mode Pressing refrigerator and freezer temperature control button at the same time more than one second After the 3 hours and if the error is still present the Primary Error will show in the display automatically See Note 1 and the Secondary Error is indicated in the display check mode Note1 In the Primary Error after 3 hours of the error occurs all display lights turn OFF except the Freezer Temperature Trouble Code Index indicating the failure mode LED check function When there s no error when the refrigerator temperature control and the freezer temperature control button at the same time are hold for 1 second or longer every LED on the display turns on at the same time when the button are released the previous mode is restored 32 8 1 10 TEST Mode 1 The Test mode allows checking the PCB and the function of the product as well as finding out the defective part in case of an error 2 The test mode is operated by pressing two buttons at Display panel 3 While in the test mode the function control button is not recognized but the recognition tone beep sounds 4 After exiting the test mode be sure to reset by unplugging and then plugging in the appliance 5 If an error such as a sensor failure is detected while in the test mode the test mode is cleared
38. s sensor is defective wires are cut or short circuited 8 1 8 Electrical Parts Are Turned On Sequentially Electrical parts such as COMP defrosting heater freezer FAN etc are turned on in the following order to prevent noise and parts damage Several parts are started at the same time at initial power on and are turned off together when TEST is completed OPERATING ORDERS Temperature of Defrosting Sensor is 45 C or more POWER in 1 2 second COMP in 1 2 second Freezer FAN when unit is newly ON gt _ gt ON purchased or when moved POWER in 1 2 second Defrosting in 10 second Defrosting Temperature of defrosting ON heater heater OFF o sensor is lower than 45 C when power cuts SERVICE in1 2second COMP in 1 2 second Freezer FAN ON _ gt Reset to normal operation Total load in 7 minute COMP in1 2second Freezer FAN from TEST MODE OFF ON cq ON 31 8 1 9 Defect Diagnosis Function 1 Automatic diagnosis makes servicing the refrigerator easy 2 When a defect occurs the buttons will not operate but the tones such as ding will sound 3 When the defect CODE removes the sign it returns to normal operation RESET 4 The defect CODE shows on the Refrigerator and Freezer Display ADJUST WARMER REFRIGERATOR TEMP gt alaeiaeieis 41S RECOMMENDED ICE PLUS 5 COL
39. within 3 6 seconds after ice ejection motor rotates in normal direction it does not proceed ice ejection but waits If the ice bank is full ice ejection motor rotates in normal direction in every hour to check the condition of ice bank If the ice bank is not full the water supply control starts after completion of ice ejection control If the ice bank is full ice ejection motor rotates in reverse direction and stops under ice making or waiting conditions If ice bank is not full ice ejection starts The TRAY tilts to the maximum and ice is separated from the TRAY and ice checking lever raises d Ice ejection motor stops for 1 second if Hall IC signal changes from OFF low to ON high after 3 6 seconds when ice ejection motor rotates in normal direction If there is no change in Hall IC signals within 1 minute after ice ejection motor operates ice ejection motor stops as ice ejection motor or hall IC is out of order e If ice ejection motor or Hall IC is abnormal ice ejection motor rotates in normal direction to exercise initial operation in every hour It resets the ice maker if ice ejection motor or Hall IC is normal f The TRAY stops for 1 second at maximum tilted conditions 9 The TRAY returns to horizontal conditions as ice ejection motor rotates in reverse direction h When the TRAY becomes horizontal the cycle starts to repeat Water Supply Ice making Ice ejection TRAY returns to Horizontal 27 MAXIMU
40. x 1860 H mm 123 Kg 23 cuft R134a Temperate T 115V 60 2 Fan Cooling MICOM control Full Automatic Heater Defrost Cyclo Pentane MQ53LAUM PTC Starting Type Fin Tube Type Wire Condenser Polyol Ester POE RL 7H 7 cst 220 10cc MOLECULAR SIEVE XH 7 ID 20 75 4 Hours 7 40 Hours Heater Sheath Water Tank Heater Embo normal VCM Vista ICE PLUS 3 left 3 right 1B 1EA Yes 2 40W Blue 1Fix S Proof 1Fold 2S Out S Proof No Yes Cover Egg tray No Yes 1 40W Blue No DIMENSIONS Lu LL NL Y TH Y Description LFC23760 Depth w Handles A 34 Depth w o Handles B 32 Depth w o Door 28 14 Depth Total with Door Open D 45 2 Height to Top of Case E 67 Height to Top of Door Hinge F 69 Width G 32 74 Width door open 90 deg w o handle H 36 4 Width door open 90 deg w handle 41 4 2 PARTS IDENTIFICATION Read this section to familiarize yourself with the parts and features of your new refrigerator NOTE This guid ecovers different models Your refrigerator could have some or all of the features and parts listed below The location of some of the parts may not correspond to that of your model Digital Sensor 1 Re
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