REFRIGERATOR SERVICE MANUAL
Contents
1. FRIO u SOL 3 21 40 2 8 Rig 1 110 916 n 15 A 1 5 4 1507 is Tw n 5 10KJ 10KJ 10KJ 13 8 6 B 6 457 10 7 15 12 13 1 MSI563FP 1 1 5 CB ASSY DISPLAY 8 2 5 3 6 w 1 1 5 5 7 3 CONS ENT 4 j J F5 F6 RL R2 R5 3 5 4 m 5 R R7 101 i 8 w 6 mess 9 FREEZER REFRIGERATOR 240 VIW TEMP TEMP 8 py E E R36 10 12 m A n p c cu L REFRIGERATOR DOOR SWITCH T 2 m 474 RFI Ne 23 RU CONG m FREEZER SENSOR 2 T RRI 7 4 RD T BN P L bu CES REFRIGERATOR SENSOR RI 10uF 5 25 m 26 1KF n L v 3 DEFROST SENSOR 23 T 844 27 m is E act ppEBZER D00R SWITCH 23 1 O CON RTI 3 26 42 10 9 2 ROOM TEMPERATURI 52. CM2 I 700 LI 9 EE at RYi J0i J02 R DOOR F FAN STEP MOTOR DISPLAY DISPLAY SW RT SNR E EA e 5 D SNR R 5NR cong CONT CONS CONG CE4 o CE9 08 lo EI m Eur P 1 o A CE6 121 Jig TESTS W lt lt s E os gt o 94 gt RFI AN D Ai O ARA O RDI d od eo BUZZER JM o Y OO RH 9 55 2228 o o O wO n3 TRANS N 002 R38 CCIE R33 OWA 0 5 o O ccu o YN 720 u 822 0012 STICKER oofoooofocoofocoodocojic DIP Ss
3. BD1 D3SBA60 Y 2 R3 fic EJ T3 12 32mH 0 5A FUSEI 1506 a L 3l CONI sm 0655 N 05 5v 22 VAL 7805 2 POWER INRI4D621 INRI4D331 10 A uw m F 21 17 ICE MAKER 5 3 RUNNING CAPACITOR 1 ALE15B12 7 9 RY2 GSNB IA DEF HEATER LAMP F 60 Q ME 27 3 s 1 1 60152 17 CON3 3 G5NB 1A 18 3 3 10 FRENCH DOOR 5 HEATER BUZZER i C3 ian 1C8 1 E LM 220 AF 1257 20 19 0861 CSTLS4M00G53 1 221 Qi F 20 Sg KIA7042 18 2 TEST S W RS 10KJ 28 AT 16 SMD VDD Varef Vss Vass TEST POT POS 4 TOSHIBA TMP87PH46N IC1 P06 der P66 UNS XOUT RESET P65 GND PWB ASSY MAIN 38 P70 P03 P02 P67 P60 ano P61 any P62 ana P64 P63 n PWB ASSY MAIN CON4
4. 108 M54563FP CON4 E 3 18 P77 6 2 4 17 P76 P75 3 5 16 P74 4 6 15 5 7 14 P73 8 13 1 3 zl IC6 1 1 z e 61 1 is 240 1 2 CONS 4 35 E 40 7105 113 3 Ste eg 2 1 1 6 39 ij n R26 pe i De 2401 2 m 38 61 115 R27 mes um 37 5 116 R28 De 8 36 m R29 i 240 1 2W 34 T hig R30 9 3 F 31 118 30 5 240 1 2W y 8 21 19 240 U2W 1 1 1 1 1 52 120 R32 i Lp E E B R33 3l i ATK 2 R364 ice I 100 47 102 717 31 8 3 RESISTANCE SEPECIFICATION SENSOR TEMPERATURE DETECTED RESISTANCE OF FREEZER RESISTANCE OF REFRIGERATOR amp BY SENSOR SENSOR DEFROST SENSOR amp ROOM SENSOR 20 22 3KQ 77 159 16 9 K Q 10 13 0 473 _ 5 10 1 K Q 384 78 5 6 2KQ 24 1KQ 10 C 4 9KQ 19 5K Q 159 3 9 K Q 15 9 K Q 20 C 31 13K Q 25 25KQ 30 20 0 8 9 K Q 40 C 14 6 2KQ 50 0 8 K Q 43KQ The resistance of the SENSOR has a 5 common difference Measure the resi
5. Check resistance resistance of between M C S C and Motor M S in Motor Open or short Replace Compressor Compressor Em Check Check resistance of resistance of two terminals in Reference 12 PTC Starter PTC Starter Check resistance of two terminals OLP Check OLP Reference 12 Reconnect LI The range of resistance is between 1 50Q ok Check Check the power supply Supply YES Did starting state under load voltage rating compressor Compressor attempting with 10 start to re start after being off for 5 minutes 11 YES Compressor is OK Replace the compressor 6 2 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 Tester Figure 19 Separate OLP from resistance value of OLP with a Tester Figure 20 Compressor and check between two terminals Shows continuity 12 Observation value is 115V 60Hz 6 80 30 The resistance value Replace PTC is OQ short or Starter open Check another electric component Replace OLP Figure 20 6 3 OTHER ELECTRICAL COMPONENTS Not cooling at all Compressor doesnt run I
6. DEFROST SENSOR is poor Replace DEFROST SENSOR HEATER RELAY is poor Replace RY2 of MAIN PWB 2 If DRAIN PIPE is blocked Check DRAIN PIPE DRAIN PIPE is blocked Remove ice and impurities Check HEATER PLATE resistance REFRIGERATOR DOOR is closed properly 3 If ice remains after Make sure that DEFROST Connection is poor Reassemble the DEFROSTING SENSOR is connected DEFROST SENSOR Make sure that FREEZER DOOR does not close Reassemble DOOR Replace GASKET 34 8 5 MAIN PWB ASSEMBLY AND PARTS LIST 8 5 1 Main PWB Assembly
7. Check for open short or incorrect resistance readings in the following components a Starting devices Short open or broke Poor contact or shorted b OLP c Compressor coil Coil open or shorted d Wiring harness Poor contact or shorted Poor cooling performance Compressor runs poorly indicated component Check starting Low voltage voltage Advise customer that the Power supply needs to be checked by an electrician Check voltage at Poor or broken or starting devices open contact Check current flowing Shorted in sub coil of Compressor Check rating of OLP F Lack of capacity Fan motor Check wiring circuit Wire is open or doesnt run shorted Check Fan Motor Coil is shorted or open Heavy frost buildup on Check current flow in EVAPORATOR the following components Sensor Fuse M Check current flow in the Defrost Heater 13 Replace indicated component Replace 2 indicated component Replace Open indicated component Replace Defrost Heater 6 4 SERVICE DIAGNOSIS CHART COMPLAINT POINTS TO BE CHECKED REMEDY No Cooling 15 the power cord unplugged from the outlet Plug into the outlet Check if the power switch is set to OFF Set the switch
8. 1 3 9 9 EXPLODED VIEW amp REPLACEMENT PARTS LIST CASE PARTS CAUTION Use the part number to order part not the position number __ 503 4098 2828 HEVH FREEZER PARTS CAUTION Use the part number to order part not the position number HEVH REFRIGERATOR PARTS CAUTION Use the part number to order part not the position number 42 HEVH DOOR PARTS CAUTION Use the part number to order part notthe position number 43 Only on some models HEVH WATER and ICE MAKER PARTS CAUTION Use the part number to order part not the position number NNN 44 EV LFC20740ST Loc No Part LocNo PartNo Description 103A 3650 2003 Handle Rear 271C 4775 2018A Hinge Assembly Upper 1038 3650 20031 Handle Rear 281 3551 1018 Cover Assembly Hinge 103C 3551 1015 Cover Assembly Lower 2828 4775 2019 Hinge Assembly Center 103 5218 3001 Rail Slide 282bE 3551 1018 Cover Assembly Hinge 104 4931J 3002A Holder Assembly Gasket 282F 3806 12006 Decor Duct 105A 5251 3003 Tube Assembly Drain 286A 4984JJ3003A BUSH 105F 5070 3002 Skirt Lower 286A 4984 00 BUSH 106A 14779 2003 Leg Assembly Adjust 301A 5421
9. and the MICOM and IC 5 The voltage for each part is as follows PART VA 1 4 5 VOLTAGE 115 Vac 12 Vdc 15 5 Vdc 5V VA1 is a part for preventing over voltage and noise When high voltage is applied the inside elements are short circuited and broken resulting in blowout of the fuse in order to protect the elements of the secondary part of the TRANSFORMER 24 8 2 2 Oscillation Circuit 19 OSCI T XIN CSTLS4M00G53 TE XOUT MICOM This circuit generates the base clock for calculating time and the synchro clock for transmitting data from and to the inside logic elements of the IC1 MICOM Be sure to use specified replacement parts since calculating time by the IC1 may be changed If changed the OSC1 SPEC will not work 8 2 3 Reset Circuit IC7 at 1 KIA7042 3 RESET 666 2 LOA 198 177 177 777 MICOM The RESET circuit allows all the functions to start at the initial conditions by initializing various parts including the RAM inside the when the power is initially supplied or the power supply to the MICOM is restored after a momentary power failure For the initial 10ms of power supply LOW voltage is applied to the RESET terminal During a normal operation 5V is applied to the RESE
10. TUN a N FD HTR DEF HTR V LAMP 106 s fof It 3 00000000 07 00000000 oH O 90 O 425 RY4 RY2 0 N N 3 ON 21 I DTS NO 5 5 CONS QO 35 N 10 gt 8 5 2 Replacement Parts List OCRATSIYA70 OL Wax E MAKER BEMARK 111 100 SAN 1515 SML TRANS 1 TRANS 114 0 TEON HO CON 5 YEON HO CON2 TEON HO CONS 111 RON 8 cH TEN SN 1 YEON CONT IC DRAN TMP87PHAGN 42 SDIP BK OTP BRAVOS0 PIT BETTER i T 1 ORESTA 1 is GKBSSNB KIDSSOOSAF BE DRIVE IC 1 16 Xy ium I ERG KATOL LI RESET EIC E 118 ICLINEAR KS 1 OWER MA
11. CoverLower 249A 5098 10028 Connector Assembly 903B 4930 2021 Holder Cover Lower 2498 5098 1002 Connector Assembly 9030 6500 100 Sensor 249E 5218 1010 Rail Slide 903 6500 1004 Sensor 249 5218 1010 Rail Slide 501 1SZZJJ3010A Screw Customized 249 3550 1111A Cover Connector 522 1411 00001 Screw Customized 249K 3550 1111 Cover Connector 24 1572 11 Screw Customized 250 4270 3001 Bar 527 4 01424 Screw Customized 2508 14403 3001 Connector Assembly 528 1572 3005 Screw Customized 2620 4004JA3002A Clip 29 4 004150 Screw Customized 262 4350 3005 Ring 31 4000W4A003A Screw Customized 262H 4775 20190 Hinge Assembly Center 38 43004150 Screw Customized 271A 4775 J2018B Hinge Assembly Upper HEVH LFC20740SW Loc PartNo Description Loc PartNo Description 103A 3650 2003 Handle Rear 271A 4775 2018B Hinge Assembly Upper 103B 3650 200 Handle Rear 271C 4775 2018 Hinge Assembly Upper 103C 3551 1015 Cover Assembly Lower 281A 3551 1018 Cover Assembly 103E 5218 3001 Rail Slide 2828 4775 2019 Hinge Assembly Center 104E 4931J 3002A Holder Assembly Gasket 282 3551 J1018D Cover Assembly Hinge 105A 5251 3003 Tube Assembly Drain 282F 3806 12006 DecorDuct 105F 5070 3002 Skirt Lower 286A 4984JJ 3003A BUSH 106A 4779 2003 Leg Assembly Adjust 286A 4984JJ 3003A BUSH 120B 52091 1002 Duct Assembly Multi 301A 5421
12. 1001 Evaporator Assembly 1208 5209 1002 Duct Assembly Multi 304A 3551 2008 Cover Assembly Machinery Rear 1250 14930 3007 Holder Bracket 305B 4580 3001 Roller 128A 14975 2002 Guide Assembly Rail 305C 4 04238 128B 14975 20028 Guide Assembly Rail 307A 2521 5715 Compressor Set Assembly 128E 4930 1025 Holder Rail 308A EBG32606502 Thermistor Assembly 1282 4930 1025A HolderRail 309A 6750C 0004S Overload Protect 131A 5074 1055 BUCKET ICE 310A 3550 2059 CoverPTC 135C 3550 2030 Cover Grille Fan 312A 5040 1 Damper Compressor 136A 3391 J1011A Tray Assembly Drawer 314A 4620 A3009A Stopper Compressor 1368 3390 1095 315A 3103J J1001K Base Assembly Compressor 1408 5027 1037 Shelf Assembly Refrigerator 317A 5851 2002 Drier Assembly 140D MHL38615403 Shelf Net 318A 4930JA3034A Holder Drier 140E MHL38615404 Shelf Net 319A 3390J 0003A Tray Drip 1420 5026 20011 Shelf Net 319C 14974 1009 Guide Fan 142E 5026 2001 Shelf Net 319 4810J 2005A Bracket Motor 143 5027 10081 Shelf Assembly Refrigerator 323B 5403 1008 Condenser Assembly Wire 143F 5027 10086 Shelf Assembly Refrigerator 327A 5006 4 Cap Drain Tube 145A 4930JJ2003A Holder Shelf 328A 4 03020 4 DamperPipe 145B 4930 2004 Holder Shelf 328A 4 03020 DamperPipe 145C 14975 2028 Guide Assembly Rail 329A 5901 1005 Fan Assembly 1452 4975 2
13. 3531 1004 Grille Assembly Fan 151A 3390 1032 Tray Vegetable 401A 6615 82005 Controller Assembly 151 4940 2003 KNOB SHUTTER 402A 6600 3007 Switch Push Button 154A 3550 120011 CoverTV 404A 4681 K1004A AC Motor 155B 4980 1016 SUPPORTER COVER TV 405A 4811 J2002A Bracket Assembly Motor 158A 3550 1040 CoverLamp 405 5040J A2009B Damper Motor Support 158 MCK30060901 CoverLamp 405F 5040 2004 Damper Motor Support 167B 4890 110026 Shelf Glass 4056 48111 2002 Bracket Assembly Motor 170A 3391 2004 Tray Assembly Meat 406B 6600 1010 Switch Push Button 200A 3581 8720 Door Assembly Freezer 4098 6912 2004 5 201A 5433 00595 Door Foam Assembly Freezer 409D 3034 10028 Reflector Lamp 203A 49871 1004 Gasket Assembly Door 410A 6621 20020 Drawing Assembly 205B 5006 2014 CAP COVER 410G 0 272 2012 Capacitor Electric Appliance Film Box 205C 5006 2014 CAP COVER 411A 6411 1006 Power Cord Assembly 212A 3651 1033 Handle Assembly Freezer 418A 5300 11000 Heater Sheath 212G 3846 01007 Name Plate 420A 4680 1001 MotorAC 212 4620 3007 Stopper Handle 501A EBR36222901 Assembly Main 230A ADC33235301 Door Assembly Refrigerator Right 5016 3551 1020 Cover Assembly PCB 230B 0 33235201 Door Assembly Refrigerator Left 503 6871 2047 Assembly Display 231A ADD32184801 Door Foam Assembly Refrigerator 503D 3110 1005 Case Display
14. ADD32184804 Door Foam Assembly Refrigerator 503C 6871 2047 Assembly Display 231B ADD32184904 Door Foam Assembly Refrigerator 5030 3110 1005 Case Display 233A 14987 2003 Gasket Assembly Door 503E 3550 2031 CoverDisplay 233B 4987 2003 Gasket Assembly Door 5037 ABQ33905312 Case Assembly Display 233C 3551J J2034D Cover Assembly Front 5036 3806 11049 Decor Control 2330 3551 2034 Cover Assembly Front 600A 5989 0002 Ice Maker Assembly Kit 233E 1930 2028 Holder Gasket 600C 2865501 Guide Tube 233F 4930 2028 Holder Gasket 602A 4931 3005 Holder Assembly Bracket 2336 14430 2005 Cam Shaft 610A 3550 2020 CoverSensor 233H 4430 2005 Cam Shaft 616E 5210 3005 Tube Plastic 237A 4974 2017 Guide Pitcher 618A 5210 3005 Tube Inject 237C 4974J J1021A Guide Drawer 619A 5220 20090 Valve Water 241A 3550 120060 CoverTray 6198 3550 2024 Cover Valve 241B MKK33992902 Bucket Dairy 619 5221 A2008G Valve Assembly Water 241C 5005 2022 Basket Assembly Door 621B ACJ30147004 Connector Assembly 241F 5005 2021 Basket Assembly Door 621 ACJ30147003 Connector Assembly 243A 4620 3006C Stopper Door 622A 5040 2015 Tube Inlet 243B 14620 2009 Stopper Door 6228 4810 6 Bracket Cover 244A 3651 10230 Handle Assembly Freezer 623 4770 A3001A Band 248E 3806 1051 Decor Tray 627A 4930 54 Holder Pipe 248F 3806 12011 Decor Tray 903A 3550 0005
15. 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 using a start kit after it has been operating 16 T OPERATION PRINCIPLE AND REPAIR METHOD OF ICEMAKER 7 1 OPERATION PRINCIPLE 7 1 1 Operation Principle of Icemaker Power On 1 Start Position Adjusts Ejector to Start Position with power on Waits until water becomes cold after starting the Icemaking operation Icemaking d Runs MOTOR to drop ice from the tray into the ICE BIN Performs Icemaking Mode after supplying water by operating the SOLENOID in ICE VALVE Park Position With the detect lever checks if the ICE BIN is full To operate LINE and SERVICE press and hold the Cube Size button for 3 seconds The icemaking will run through 3 stages Fill Icemaking Test Mode Y Y vy vy 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 Cube Size button Power On Off Switch 17 7 2 ICE MAKER FUNCTIONS 7 2 1 Ice Making Mode 1 Icemaking refers to the freezing of supplied water in the ice trays Complete freezing is assured by measuring the temperature of the Tray with icemaking SENSOR 2 Icemaking starts after
16. 2V or less 0V 5V MOTOR ON 13V 15V OV 2V 3V 27 3 Buzzer Drive Condition Check 01 BUZZER 106 35 I 14 PPG E MICOM M54506 29 1 B P66 R10 AIN6 220 7 7 25V 177 2 63 kz Ding 2 21 kz Dong AAA 7 28 aus a gt OFF 7 Condition Tone Ding Dong when the button on Alarm for open door OFF Measure the display is pushed beep beep beep ment Location 10059 0 25 015 26 058 056 A gt 5 5V 0v 5V 101 5V 0v 0 4 Open Door Detection Circuit Check P67 R38 2KJ CON5 AIN7 2611 223 REFRIGERATOR DOOR SWITCH T I 12 se TUS AINA m 1 D FREEZER DOOR SWITCH Measurement Pin No 1 amp 2 Freezer Door Location Pin No 11 amp 12 Refrigerator Door efrigerator Door Closed 5V Open 0v 28 8 2 5 Temperature Sensor Circuit MICOM 60 61 62 64 23 139 Ji 16 2KF CONG UM 8 CES ccu L 8 23 218 a 7 j R40 26 1KF 5 6 cu d CE9 23 T 101 5
17. FAN MOTOR TEMPERATURE is operates forced COOLING incorrect CONNECTING WIRE is poor Refer to 8 2 4 2 and check 2 If DEFROSTING Check the amount of frost DEFROSTING is poor See DEFROSTING is normal sticking on the EVAPORATOR is poor 3 If SENSOR Check the resistance SENSOR RESISTANCE is Replace SENSOR is normal of the Refrigerator poor SENSOR 4 Door Line contact Check the seal when the door is closed Door liner damaged Replace door liner 33 PROBLEM INDICATED BY CHECK CHECKING METHOD CAUSE SOLUTION COOLING is poor If REFRIGERATOR 1 1f FREEZER TEMPERATURE Check is FREEZER Make sure the TEMPERATURE isn ormal TEMPERATURE 1300 low DOOR isattached is too low 2 If amount of cool air from Make sure that the amount FAN MOTOR is poor Replace FAN MOTOR FAN MOTOR is and speed of cool air are Passage of cool air Remove impurities sufficient sufficient by touching the is blocked check supplied on the EVA frozen See DEFROSTING is poor REFRIGERATOR 3 Door Line contact Check door seal when Door liner damaged Replace Door liner door is closed DEFROSTING is NO DEFROSTING 1 If HEATER emits heat USE TEST MODE3 HEATER disconnection Replace HEATER poor forced DEFROSTING TEMPERATURE FUSE Replace TEMPERATURE disconnection FUSE Connection is poor Check EVAPORATOR connection and wire of MAIN PWB CONNECTOR
18. door too often and close it firmly Condensation forms in the Exterior Case Check if the ambient temperature and humidity of the surrounding air are high 5 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 15 the unit positioned in a firm and even place Are any unnecessary objects placed in the back side of the unit Check if the Drip Tray is not firmly fixed Check if the cover of the compressor enclosure in the lower front side is taken out Adjust the Leveling Screw and position the refrigerator in a firm place Remove the objects e Fix the Drip Tray 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 a firm place and level the Leveling Screw Make sure food stored in shelves does not 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 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 Ot
19. edge beneath door frame edge 2 Turn upper gasket bracket spring so that both spring ends are in the door channel 3 Push in clip until you hear it snap securely into place Gasket 1 Bracket Clip Spring E Door S Frame 41 Correct Incorrect Figure 5 4 Push in remaining two clips until you hear each snap securely into place Note Make sure that no part of gasket bracket edge protrudes from beneath door frame edge 2 Insert gasket into channel 1 Snap gasket assembly into the door bracket Inserting the Gasket Assembly into the Bracket Door T Correct Figure 6 Incorrect 2 Press gasket into channels on the three remaining sides of door i Figure 7 3 Replace door frame cover Starting at top of cover and working down snap cover back into door Figure 8 3 2 DOOR ALIGNMENT If the space between your doors is uneven follow the instructions below to align the doors 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 with unit Figure 9 3 3 1 Remove the freezer shelf If your refrigerator has icemaker remove the icemaker first 2 Remove the plastic guide for slides on
20. its original RPM Demonstration MODE 1 When the ICE PLUS key and 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 23 8 2 FUNCTION 8 2 1 Power Circuit CM2 470nF 2ISVAC 32mH1 0 54 FUSE 5 250V 2A ili 5mH 4A CON EE rower 0 INR14D621 220 240 INR14D331 100 127 VAL BDL D3SBA60 TRANS gt r 110 i R 56081 1 20 2 1 1 b y DA RL2 51 EN RI 22 150K 220 2407 pon 380KLIW 115V 305 ZZ 0 i KIA43L 1 1 1 1 4 18 CMI 102 gr 275VAC STR 66351 2 UAW 22042401 5V oo Z 10 220 p CC2 11 221 12507 The secondary part of the TRANSFORMER is composed of the power supply for the display the BLDC FAN Motor drive 15 5 V the relay drive 12
21. 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 screws and disassembling the shroud 5 Pull out the fan and separate the Fan Motor and Bracket E FAN MOTOR Ole FAN Figure 11 3 4 DEFROST CONTROL ASSEMBLY Defrost Control assembly consists of Defrost 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 At 72 C it turns the Defrost Heater off Fuse M is a safety device for preventing over heating of the Heater when defrosting 1 Pull out the grille assembly Figure 12 2 Separate the connector with the Defrost Control assembly and replace the Defrost Control assembly after cutting the Tie Wrap Figure 13 GRILLE ASSEMBLY DEFROST CONTROL ASSEMBLY 2 Figure 13 DV Figure 12 3 5 LAMP Figure 14 3 5 1 To change the refrigerator light figure 14 1 Unplug the power cord from the outlet 2 Remove refrigerator shelves 3 Release the hooks on the front of the light shield with the help of a flat screwdriver and pull the shield down to remove it 4 Turn the bulb counterclockwise 5 To assemble first insert the hooks at the back and
22. 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 Is 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 Food in the s food placed in the cooling air outlet Place foods in the high temperature section Refrigerator front part is frozen Check if the control is set to colder position Set the control to Recommended position 15 the ambient temperature below 5 C Set the control to Warm position Condensation or ice forms inside the unit 15 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
23. 0280 Guide Assembly Rail 329C 5901 10048 Fan Assembly 146 50471 1001 Case Lower 332A 3531 1004 Grille Assembly Fan 151A 3390 1032 Tray Vegetable 401A 6615 2005 Controller Assembly 151C 4940 2003C KNOB SHUTTER 402A 6600 3007 Switch Push Button 154A 3550 120011 CoverTV 402A 6600JB3007E Switch Push Button 1558 4980 1016 SUPPORTER COVER TV 404A 4681 1004 AC Motor 158A 3550 1040 405A 4811 2002 Bracket Assembly Motor 158 MCK30060901 Cover Lamp 405C 5040 20098 Damper Motor Support 1678 14890 110026 Shelf Glass 405F 5040 2004 Damper Motor Support 170A 3391 20046 Tray Assembly Meat 4056 4811 2002 Bracket Assembly Motor 200A 3581 8720 Door Assembly Freezer 4068 6600 1010 Switch Push Button 201A 5433 0059 Door Foam Assembly Freezer 4098 6912 82004 Lamp Incandescent 203A 49871 11004 Gasket Assembly Door 409D 3034 1002 Reflector Lamp 205B 5006 2014 CAP COVER 410A 6621 20020 Drawing Assembly 205C 5006 2014 CAP COVER 410G 0CZZJB2012 Capacitor Electric Appliance Film Box 212A 3651 1033 Handle Assembly Freezer 411A 6411 1006 Power Cord Assembly 2126 3846 01007 Name Plate 418A 5300 11000 Heater Sheath 212 4620J 3007E Stopper Handle 4204 4680 1001 MotorAC 230A ADC33235304 Door Assembly Refrigerator Right 501A EBR36222901 Assembly Main 230B ADC33235204 Door Assembly Refrigerator Left 501F 3551 1020 Cover Assembly 231A
24. 1001 Evaporator Assembly 1250 4930 3007 Holder Bracket 304A 3551 2008 Cover Assembly Machinery Rear 128A 4975 2002 Guide Assembly Rail 3058 4580 3001 Roller 128B 4975 2002 Guide Assembly Rail 305C 4 04238 Pin Common 128 4930J 1025B HolderRail 307A 2521CRA5715 Compressor Set Assembly 128 4930 1025 HolderRail 308A EBG32606502 Thermistor Assembly 131A 5074 1055 BUCKET ICE 309A 6750 00045 Overload Protect 135 3550 2030 CoverGrille Fan 310A 3550 2059 CoverPTC 136A 3391 1011 Tray Assembly Drawer 312A 5040 A3031A Damper Compressor 1368 3390 1095 Tray Drawer 314A 4620 A3009A Stopper Compressor 140B 5027 1037B Shelf Assembly Refrigerator 315A 3103 1001 Base Assembly Compressor 140D MHL38615403 Shelf Net 317A 5851 2002 Drier Assembly 140E MHL38615404 Shelf Net 318A 4930 A3034A HolderDrier 142D 5026 20011 Shelf Net 319A 3390JJ 0003A TrayDrip 142E 5026 2001 Shelf Net 319C 4974 1009 Guide Fan 143bE 5027 10081 Shelf Assembly Refrigerator 319 4810 2005 Bracket Motor 143F 50271 1008 Shelf Assembly Refrigerator 3238 5403 1008 Condenser Assembly Wire 145A 4930 200 Holder Shelf 327A 5006 034 Cap Drain Tube 145B 4930 2004 Holder Shelf 328A 4 03020 145C 4975 2028 Guide Assembly Rail 329A 5901 1005 Fan Assembly 145F 4975 2028D Guide Assembly Rail 329C 5901 1004 Fan Assembly 146A 5047 1001 Case Lower 332A
25. 13 SB Y Y B B BN RD EB 158 B CONI CON CON3 8 an v B EK EN RD 58 SB m GN YL lt 90 75 O 2 BK Je LS L O PR 5 PAN E Do n e ze gt N E lt jEr 2 u Tm LU GNI BL Bl B EART ij PART 151 5 3 e PLUG TYPE E MAK HEATER AND FUSE E MAKER COP EARTH PAR IN DIFFERENT LOC ER AND FUSE CONFIGURATION ICE 15 74 50 60Hz 220 2404 50 60Hz 287 Kris 4 E 8 5 BE 5 Je Su 1 HA eje gu E 7 iss 3854 007 N iGREEN BL BLI N BROWN RO RED ORANGE YL YELLOW G WH WHITE PXSPINA GY CREY PREPURPLE SB SKY BLUE 10 6 TROUBLESHOOTING 6 1 COMPRESSOR AND ELECTRIC COMPONENTS gt Power Source Rated Voltage 10 Remove PTC Starter from Compressor and measure voltage between Terminal C of Compressor and Terminal 5 or 6 of PTC YES disconnected No Voltage Replace OLP Check connection condition Applied voltage isn t in acceptable range 115V 10 Advise customer that power supply needs to be checked by an electrician 2
26. 231B ADD32184901 Door Foam Assembly Refrigerator 503E 3550 2031 Cover Display 233A 4987 2003 Gasket Assembly Door 503F ABQ33905312 Case Assembly Display 233B 4987 20031 Gasket Assembly Door 5036 3806 11049 Decor Control 233C 3551 J2034D Cover Assembly Front 600A 5989 0002 Maker Assembly Kit 2330 3551J J2034C Cover Assembly Front 600C 2865501 Guide Tube 233 4930 2028 Holder Gasket 602 4931JA3005B Holder Assembly Bracket 233F 4930 2028 Holder Gasket 610A 3550 2020 Cover Sensor 233G 4430 2005 Cam Shaft 616E 5210 A3005N Tube Plastic 233H 4430 2005 Cam Shaft 618A 5210 3005 Tube Inject 237A 4974 2017 Guide Pitcher 619A 5220 20090 Valve Water 237 4974 1021 Guide Drawer 619B 3550 2024 Cover Valve 241A 3550 120060 619 5221 20086 Valve Assembly Water 241B MKK33992902 Bucket Dairy 621B ACJ30147004 Connector Assembly 241C 5005 2022 Basket Assembly Door 621C 30147003 Connector Assembly 241F 5005 2021 Basket Assembly Door 622A 5040 2015 Tube Inlet 243A 4620 3006A Stopper Door 6228 4810 Bracket Cover 243B 4620 2009 Stopper Door 623 4770 A3001A Band 244A 3651 1023 Handle Assembly Freezer 627A 4930 54 Holder Pipe 248 3806 1051 Decor Tray 903A 3550 0005 Cover Lower 248F 3806 L2011A Decor ray 9038 4930 2021 Holder Cover Lower 249A 5098 1002 Connector Assembly 9030 6500 1003 Sensor 2
27. 49B 5098 1002 Connector Assembly 903 6500 1004 Sensor 249 5218 1010 Rail Slide 501 1522 3010A Screw Customized 249F 5218 1010 Rail Slide 522 1471 00001 Screw Customized 249 3550 1111 Cover Connector 524 1577 011 Screw Customized 249K 3550 1111 Cover Connector 527 4J01424C Screw Customized 250A 4270JJ 3001F Bar 528 1527 3005 Screw Customized 250B 4403 3001 Connector Assembly 529 4J00415D Screw Customized 2620 4004 3002 Clip 531 4000W4A003A Screw Customized 262 4350 005 Ring 538 4 004150 Screw Customized 262H 4775 2019 Hinge Assembly Center LG Electronics Inc P No 3828JL8076G JUNE 2007
28. 5 RECOMMEMDED COLDER WARMER 41S RECOMMEMDED COLDER ADJUST REFRIGERATOR TEMP ICE PLUS FREEZER TEMP Ow do 1 2 3 4 5 6 7 4 2 3 4 5 6 7 J 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 hign speed 4 High speed 25008 Initial power on or load corresponding operation ICE PLUS Normal speed 2200 RPM general working conditions 5 Fan motor is stopped when Refrigerator Door is Opened 6 The fan motor is stopped when Freezer Door is Opened only if compressor status is OFF 8 1 3 ICE PLUS 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 pres
29. 50V 25 G Ral 26 1KF 7 1 L a 10 d ers 10 28 1507 3 27 R43 2KI 77 9 1 ccie L 24 23 T 1 FREEZER SENSOR REFRIGERATOR SENSOR DEFROST SENSOR The upper CIRCUIT reads REFRIGERATOR temperature FREEZER Temperature and DEFROST SENSOR temperature for defrosting and the indoor temperature for compensating for the surrounding temperature into MICOM OPENING or SHORT state of each TEMPERATURE SENSOR are as follows SENSOR CHECK POINT NORMAL 30 50 SHORT CIRCUITED OPEN Freezer Sensor POINT A Voltage Refrigerator Sensor POINT B Voltage 0 5V 45V OV 5V Defrosting Sensor POINT C Voltage 29 8 2 6 Refrigeration Compartment Stepping Motor Damper Circuit The circuit shown below is the damper circuit to regulate the refrigerator temperature STEPPING MOTOR 916 TATTTAAP TT 5 HH 4 1 1 Ie m 5 Tug 5 2 1 5 6 02 H E 5 jur om 7 POL 30 8 2 9 Key Button Input amp Display Light On Circuit bThe circuit shown above determines whether a function control key on the operation display is pushed It also turns on the corresponding function indication LED LED Module SEVEN SEGMENT DISPLAY SEVEN SEGMENT DISPLAY MODULE The drive type is the scan type
30. LG REFRIGERATOR CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL MODELS LFC20740 CONTENTS SAFETY PRECAUTIONS 1 SPECIFICATIONS 2 PARTS IDENTIFICATION 3 DISASSEMBLY 3 1 DOOR 3 2 DOOR ALIGNMENT 3 3 FAN AND FAN MOTOR 3 4 DEFROST CONTROL ASSEMBLY 3 5 LAMP 3 6 REFRIGERATORCONTROLBOX 7 3 7 MULTI DUCT 4 ADJUSTMENT 4 COMPRESSOR 4 2 PTC STARTER A3 OLP QVERLOAD PROTECTOR error bn vw 9 44 TO REMOVE THECOVER 9 5 CIRCUIT DIAGRAM 6 TROUBLESHOOTING 6 1 COMPRESSOR AND ELECTRICAL COMPONENTS G62PIGANDIQIP 222222 CHEM ARD 2 SOIHERELECTRICAECOMPONENIS 2 e Eva uoa re gua ap ava Fog etos Eee Er EE 3 G6 ASERVICEDIAGNOSIS CHART a Ac 4 6 9 a cc 5 7 OPERATION PRINCIPLE AND REPAIR METHOD OF ICEMAKER 7 8 DESCRIPTION OF FUNCTION amp CIRCUIT OF MICOM 20 9 EXPLODED VIEW amp REPLACEMENT PARTS LIST 40 SAFETYPRECAUTIONS 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 2 To prevent electric shock unplug before servicing On or in the refrigerator 3 Always check line voltage and amperage 8 When
31. NAGEMENT PS2561L1 1 V NEC 4P DIP BK MEN IC FOWEX MANAGE gt au C STANDARD LOGI its IC DRAWING 1 m RELAY 113 RELAY AER OMRON OMRON 115 RELAY OMRON b OMRON Lx RELAY OMRON RESONATOR CERAMIC 5154 00665 0 AMEZ 05 159 RADIAL TP MURATA MURATA E IVARISTOR INET4D621 ILIIN UL VDE BK 6207 1L SAM WHA D VARISTO IL JIN ULSA VDE LIND 1 SAM WHA THINKING 1 SHNDENGIN 1 DELTA 4 DELTA 1 DIODE RECTIFIERS 1 SAM 1 SAM WHA SAM WEA i i i SAM WHA I SAM WEA 1 MURATA 4 1 1 6 1 1 1 108010026609 TUER pp Ba OHM 1 8 1 3012 W TP 08024000809 240 OHM 1 2 W 5 2012 R TP 240 1 2 W 5 ORIS101RAT2 SLIK OHM 1 8 W 16 2012 RTP 9810025407 1 4 W 1 00 16 2 1 4 W 1 00 2 26 1K 1 4 W 100 TABS ORNZ612G409 0851511609 15 OHM 1 W 5 00 2 L2 08M 1 W 5 2 150K OHM 1 W 5 00 52 IIT m H 44411444414 ages rea E ERE EE EL bbl i b
32. T terminal If a malfunction occurs in the RESET IC the MICOM will not operate 25 8 2 4 Load Buzzer Drive amp Open Door Detection Circuit 1 Load Drive Condition Check m un m 0 5 182 DEF HEATER 8 21 1 22 m DOOR S W F B ES DOOR TU UL E 10 os HEATER FRENCH DOOR LOAD TYPE COMP siiis LAMP HEATER 1 2 DEW HEATER Measurement Location IC6 NO 12 NO 14 NO 15 NO 13 ON 1V or below Condition OFF 12V 26 2 Fan motor driving circuit freezing compartment fan 1 The circuit makes the Motor Fan OFF by cutting Off the power supplied to driver inside the Fan Motor when the is necessary 2 This is a circuit to perform a temporary change of speed for the fan motor and applies DC voltage up to 7 5V 16V to motor 3 This circuit prevents over driving the fan motor by cutting off power applied to the fan motor in the lock of fan motor by sensing the operation RPM of the fan motor CON4 3 MICOM 2 1 a part b part part MOTOR OFF
33. TC 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 part 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 Compressor and protects the Motor by opening the circuit to the Motor if the temperature rises and activating the bimetal spring in the OLP 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 2 For normal operation of the do not turn the Adjust Screw of the OLP in any way OVERLOAD PROTECTOR cross section Part No Name Base phenolic UL 94 0 rated 2 Movable arm support plated steel 3 Stationary contact support plated steel Customer part number Lot code date code O 330 Electrical characteristics part number termination part number Heater support plated steel amp Heater resistance alloy 6 Disc thermostatic alloy 2 Movable arm s
34. a Ua bb GaGa Ea 4 aaaea las fas ee zi gt zz 36 8 5 3 PWB Assembly Display and parts list CON101 1101 48444 44 4 OOOOGO G 2 F3 F4 F5 F6 F7 x P N DESCRIPTION SPEC MAKER REMARK 1 1 687088090 KS PJT GOOD BETTER DISPLAY DIO SAN 16 2 1 3 66204091598 WAFER 5 250 09 4 5 6600 00 SVITCH TACT JTP 230A JEIL 12V DC SOMA JEIL 6600 880053 1105 KYUNG IN 61 TACT S W KPT 1109G KYUNGIN SW103 M 7 ODLEQUOAA ED 824 81 TP GREEN 2 RI R7 FT E 8 000414809 DIODE SWITCHING IN4148 26 PYUNG CHANG 0101 02 103 DELTA 12 10 6854850001A JUMP WIRE 0 6 52MM TAPING SN COMM 01 412 ie 9vwrofeoooo SULDERRUSIN WIRE RSO 0120 HEESUNG F 9 13 49111004 SOLDER SOLDERING H63A 14 59333105 FLUX 6 0 825 0 830 KOREA F H 206 KOKI 37 8 6 PWB DIAGRAM 8 6 1 PWB Main Assembly
35. completion of the water fill operation 3 The icemaking function is completed when the sensor reaches 7 C 60 to 240 minutes after starting NOTE After icemaker power is ON the icemaker heater will be on for test for 9 sec 7 2 2 Harvest Mode 1 Harvest Ice removing refers to the operation of dropping ices into the ice bin from the tray when icemaking has completed 2 Harvest mode 1 The Heater is ON for 30 seconds then the motor starts 2 Harvest mode is completed if it reaches start position again while Heater amp Motor are on at the same time A ice bin is full The EJECTOR stops heater off B ice bin is not full The EJECTOR rotates twice to open for ice NOTE If the EJECTOR does not rotate once within 5 minutes in status 2 separate heater control mode starts operating to prevent the EJECTOR from being constrained It is recommended that the user open for ice to return to normal mode 7 2 3 Fill Park Position 1 Once a normal harvest mode has been completed the water solenoid will be activated 2 The amount of water is adjusted by pressing the fill key repeatedly This changes the time allowed for fill as illustrated in the table below Water supply amount table STAGE TIME TO SUPPLY INDICATIONS REMARKS 01 1 6 water amount will vary depending the water control switch setting as 2 7 sec well as the water pressure of the connected wa
36. der a Dairy Bin O Egg Box Q Refrigerator Door Rack Freezer Light Q Pull out Drawer on some models 3 DISASSEMBLY 3 1 DOOR gt Left Door Loosen the cover screw 1 Disconnect door switch wire 2 Loosen hinge bolts 3 Lift off the top hinge 4 Place the door on a non scratching surface with the inside up gt Right Door Loosen the cover screw 1 Disconnect door switch wire 2 Disconnect wire harness 5 Loosen hinge bolts 3 Loosen ground screw 6 Lift off the top hinge 4 Place the door on a non scratching surface with the inside up Figure 1 Door Gasket Removal 1 Remove door frame cover Starting at top of cover and working down snap cover out and away from door Frame Cover Handle Figure 2 2 Remove gasket bracket clips There are two clips on each door Start bracket removal near one of the middle clips 1 Pull gasket back to expose gasket bracket clip and door frame 2 Insert a flat tip screwdriver into seam between gasket bracket and door frame and pry back until clips snaps out 3 Continue prying back along seam until all clips snap out Gasket Door Bracket Clip Frame Figure 3 Flat Tip Screwdriver Gasket Bracket 3 Remove gasket Pull gasket free from gasket channel on the three remaining sides of door Figure 4 Door Gasket Replacement 1 Insert gasket bracket clips 1 Insert gasket bracket
37. detection of initial 4 SOLENOID VALVE position you can confirm that valve is on HALL IC You can check when the Hall IC is sensing a ful 5 LEVER ice condition If there is a water fill error the fifth LED is not on 6 Reset Return to Status prior to Five seconds after fifth stage is completed TEST MODE the icemaker resets to initial status 7 3 DEFECT DIAGNOSIS FUNCTION 7 3 1 ERROR CODES shown on Ice Maker water supply control panel NO DIVISION INDICATOR PROBLEM REMARKS Note fill times Display switch 1 Normal see previous page None operates properly Icemaking Make sure that the wire 2 Sensor Open or shorted wire or sensor on each sensor is malfunction connected Ejector blades have not reached Ghe k Icemaker Kit the park position after 18 3 a HALL IC MOTOR malfunction mues from start of harvest HEATER RELAY ERROR indicators in table can be checked only in TEST mode 19 8 DESCRIPTION FUNCTION amp 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 initially applied or restored after a power failure it is automatically set to 4 amp 4 ADJUST WARMER 41
38. ed 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 or more POWER 1 2 second COMP in 1 2 second Freezer FAN when unit is newly ON ON ON purchased or when moved 5 8 POWER ini 2secod Defrosting 10 Defrosting Temperature of defrosting ON gt heater ON heater OFF o sensor is lower than 45 when power cuts SERVICE in 1 2 second COMP in 1 2 second Freezer FAN V ON ON Reset to normal operation Total load 17 minute COMP in1i 2second Freezer from TEST MODE OFF gt ON 21 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 defect is repaired the defect code is removed and refrigerator returns to normal operation RESET 4 The defect CODE is shown on the Display 5 E E 5 ADJUST WARMER 415 RECOMMEMDED COLDER WARMER 415 RECOMMEMDED COLDER ADJUST ERROR CODE on display panel LEDOFFLEDON O NO ITEM ERROR CODE CONTENTS REMARKS 1 2 offreezer alot O Cutorshortcircuit wire 2 dendum sensor OQ O O Cutor short circuit wire inspect Connecting wires on each sensor Failu
39. efrigerator is closed while the buzzer sounds Freezer Door Closed Open Closed Open 10840 or Refrigerator Door 3 Titnes 3 Times 3 Times 3 Times Buzzer gt 1 30 sec 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 Refer to the Buzzer Circuit 8 2 4 No 3 8 1 7 Defrosting removing frost 1 Defrosting starts each time when compressor running time reach 7 hours if any door hasn t been opened 2 In case of any Door has been opened the defrosting period will start considering the next conditions If Compressor running time is bigger than 7 hrs when door is opened Defrosting starts immediately If compressor running time is less than 7 hours when door is opened Defrosting starts after a compensation time is applied 3 For initial power on or for restoring power defrosting starts when the compressor running time reaches 4 hours 4 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 Circuit 8 1 9 5 Defrosting won t function if its 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 start
40. her possible problems Check if frost forms in the freezer Not defrosting Check the refrigeration system The system is faulty Check the Thermistor The operation of gt the Thermistor is incorrect 14 Check Components of the defrosting circuit Perform sealed system repair Replace the Thermistor 6 5 REFRIGERATION CYCLE Troubleshooting Chart STATE OF STATE OF THE TEME ERATURE SORE 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 Refrigerator dont frost forms in inlet only temperature Normal cooling is possible by In cool normally restoring the normal amount of 5 refrigerant and repairing the leak COMPLETE Freezer Flowing sound of refrigerant Equal to ambient No discharging of Refrigerant LEAKAGE compartment and is not heard and frost isn t temperature Normal cooling is possible by Refrigerator dont formed restoring the normal amount of cool normally refrigerant and repairing the leak PARTIAL Freezer Flowing sound of refrigerant A little higher Normal discharging of the CLOG compartment and is heard and frost forms than ambient refrigerant 8 Refrigerator dont in inlet onl
41. or 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 8 Use proper electric components appropriate to the Particular Compressor 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 Contamination in the cylinder 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 BaTiOs 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 4 2 3 PTC Applied Circuit Diagram Starting Method for the Motor OVERLOAD PROTECTOR 2 PTC COMPRESSOR 5 MOTOR 5 M 7 222625 PTC STARTER SEALED TERMINAL Resistance Starter Ca
42. pacitor Running Figure 17 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 The 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 b Always use the P
43. pring temper copper alloy Contact movable silver on copper 8 Contact stationary silver on copper 40 Slug plated steel Cover polyester UL 94 0 rated 42 Pin connector plated copper alloy To engage 2 33 2 66 mm dia pin Figure 18 4 4 TO REMOVE THE COVER 1 Remove the Cover Back M C 2 Disconnect two housing upper side of comp connected in 3 Loosen two screws on comp base 4 Use a L shaped flap tool to pry off the cover 5 Assembly in reverse order of disassembly 5 CIRCUIT DIAGRAM y XN E C y XC KY e NA May A e JISPL AY XEMBLY GNIPRIBAIPK 617 813 415 STEPPING MOTOR EPTION S W PERCI R D00R R 27 20 0 gt PRIGY WH B RD RD BO BL P GY GY BN BN CON4 CONS 7 cos Py Te MES MA ASSEMBLY MAIN co n WH ES 8 F SENSOR BL ENS 91817165432 7161514132 2
44. re of defrost 3 sensor O Oj Cutor short circuit wire 5 RT sensor error All off 9 Open or short circuit LED check mode Visible in LED CHECK MODE S i f defi t 2 hours later after TERM 4 heater or Temperature tarting defrost If pull Outo Poor of defrost All off o S Connector indicated 000 sensor doesn t be minimum 2 46 F 8 C Tallure occurs Failure of BLDC fan If there is no fan motor Poor motor hocking to 5 motorat freezing All off signal for more than 65 seg Wires of fan contact of compartment structures to fan In operation fan motor snapping or short of lead DISPLAY CHECK MODE Press at the same time ADJUST REFRIGERATOR TEMP 8 ADJUST FREZEER TEMP For more than 1 second This Mode is for LED inspection and ALL LED will turn ON at this time If releasing the buttons the display will indicate the previous Status If there is an RT sensor defect it will be indicated in this mode 22 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 The test mode is operated by pressing two buttons at Display panel While in the test mode the function control button is not recognized but the recognition tone sounds After exiting the test mode be
45. sed 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 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 20 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 r
46. servicing the evaporator wear gloves to prevent Injuries from the sharp evaporator fins 9 Service on the refrigerator should be performed by a Qualified technician Sealed system repair must be Performed by a CFC certified technician 4 Use standard electrical components 5 Don t touch metal products in the freezer with wet may cause frost bite 6 Prevent water from spiling on to electric elements or the Machine parts 1 SPECIFICATIONS LFC20740 CAPACITY litros F R T 180 97 374 23 555 20 DIMENSIONS in W H D 29 7 8 68 3 7 34 5 9 CURVED STAINLESS STEEL PCM VCM RI34a 120 3gr NO FREEZER ASKET DOOR YES 1 RAY MEAT SNACK PAN YES 1 SHELF AfIX AMP YES 2 RAY EGG 5 1 GUIDE BOTTLE YES 2 REFRIGERATOR TRAY VEGETABLE NORMAL BASKET DOOR 3 LEFT 3RIGHT 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 Digital Sensor Control Refrigerator Light Q Shelves Temperature Control Snack Pan Q Can Dispenser Q Optibin Crisper Keeps fruits and vegetable fresh and crisper Customcube O Durabase Divi
47. stance of the SENSOR alter leaving it for over 3 minutes in the measuring temperature This delay is necessary due to sensor response speed 32 8 4 TROUBLESHOOTING PROBLEM INDICATED BY CHECK CHECKING METHOD CAUSE SOLUTION POWER SOURCE 1 The whole DISPLAY 1 FREEZER Check if FREEZER POWER SOURCE is poor Check outlet Voltage is poor LED SEVEN SEGMENT REFRIGERATOR REFRIGERATOR DOOR IS DISPLAYis off OPEN and check display 2 DISPLAY LED 2 If LAMP is dim Check visually Applied voltage error Use boosting TRANS SEVEN SEGMENT 3 The connection of Check connection of CONNECTOR connection Reconnect CONNECTOR DISPLAY operates the MAIN PWB CONNECTOR is poor abnormally CONNECTOR TRANS FUSE is open Replace TRANS COOLING is poor NO COOLING 1 If the COMPRESSOR USE TEST MODE1 COMPRESSOR locked or Replace COMPRESSOR operate forced COOLING blocked If less than 7 minutes pass OLP PTC is poor Replace after compressor shuts off COMPRESSOR RELAY is Replace MAIN PWB don t press the KEY and poor wait THE CONNECTING WIRE Check the connection of the is poor black wire of the MAIN PWB CONNECTOR CON2 2 If refrigerant is leaking Measure the amount of frost Refrigerant leakage Replace the leaking part and sticking on EVAPORATOR replace any lost refrigerant and the surface temperature of the condenser pipe FREEZER 1 If FANMOTOR USE TEST MODE1 FAN MOTOR is poor Replace the
48. sure to reset by unplugging and then plugging in the appliance error such as a sensor failure is detected while in the test mode the test mode is cleared and the error code is displayed 6 While an error code is displayed the test mode will be activated MODE MANIPULATION CONTENTS REMARKS TEST1 Push ICE PLUS 1 Continuous operation of the key and ADJUST key of COMPRESSOR Freezer Temperature at the 2 Continuous operation of the freezer fan test time same time over 3 3 STEPPING DAMPER OPEN seconds 4 Defrosting Heater OFF 5 Every DISPLAY LED ON TEST2 Push ICE PLUS 1 COMP OFF Reset if the key and ADJUST key of 2 Freezer FAN OFF temperature of the Freezer Temperature atthe 3 STEPPING DAMPER CLOSE Defrosting sensor is same time over 3 seconds 4 Defrosting heater ON 46 F 8 C or more in TEST MODE 1 5 DISPLAY LED 1 3 5 7 ON Reset Push ICE PLUS Reset to the previously setting before The compressor will key and ADJUST key of TEST MODE Start after a 7 minute Freezer Temp at the same delay 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
49. ter line 3 8 sec 18 7 2 5 Function TEST 1 This is a compulsory operation for test service cleaning etc It is operated by pressing and holding the Cube Size button for 3 seconds 2 The test works only in the Icemaking Mode It cannot be entered from the Harvest or Fill mode If there is an ERROR it can only be checked in the TEST mode 3 Caution If the test is performed before water in the icemaker is frozen the ejector will pass through the water When the fill mode begins Stage 4 unless the water supply has been shut off added water will overflow into the ice bin If the control Doesnt operate normally in the TEST mode check and repair as needed 4 After water is supplied the normal CYCLE is followed icemaking Harvest gt Fill gt Park Position 5 Five seconds after Stage 5 is completed the icemaker returns to MICOM control The time needed to supply water resets to the pre test setting Diagnosis TABLE STAGE ITEMS INDICATOR REMARKS Five seconds after heater starts heater will 1 HEATER go off if temperature recorded by sensor is 10 50 F or lever is in up position Five seconds after heater starts you can 2 MOTOR confirm that motor is moving gt You can confirm Hall IC detection of position 3 HALL IC TRAY E Two seconds after
50. then push up the light shield upwards Max 60 W2EA Figure 15 3 5 2 Freezer Compartment Lamp figure 15 1 Unplug refrigerator or disconnect power 2 Reach behind light shield to remove bulb 3 Replace bulb with a 60 watt appliance bulb 4 Plug in refrigerator or reconnect power 3 6 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 Figure 16 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 7 MULTI DUCT 1 Remove the upper and lower Caps by using a flat screwdriver and remove 2 screws Figure 17 2 Disconnect the lead wire on the bottom position Figure 17 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 f
51. y temperature The capillary tube is faulty D cool normally UJ WHOLE Freezer Flowing sound of refrigerant Equal to ambient Normal discharging of the 8 CLOG compartment and is not heard and frost isn t temperature Refrigerant Refrigerator don t cool formed MOISTURE Cooling operation Flowing sound of refrigerant Lower than Cooling operation restarts CLOG stops periodically is not heard and frost melts ambient when heating the inlet of the temperature capillary tube Low flowing sound of A little higher Low pressure at high side RESSION Refrigerator refrigerant is heard and than ambient of compressor due to low y di don t cool frost forms in inlet only temperature refrigerant level COMP No compressing Flowing sound of refrigerant Equal to ambient pressure in the high om RESSION operation is not heard and there is temperature pressure part of the z no frost compressor 15 6 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 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
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