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REFRIGERATOR SERVICE MANUAL

1. PWB PCB ASSEMBLY DISPLAY 1 2 3 4 5 e v a o CON101 Li r Ws 0 2 PK WH YL 3 z o 00 GYWHBL YL RD Ao BO PR YL Gv Gv 1 2 3 4 5 6 7 10 t1 12 13 1 2 3 415 6 7 8 9 10 11 12 CONS PWB PCB ASSEMBLY MAIN 1 PI DOOR 2 PK B PERCEPTION S W 3 BO DEF SENSOR gt 4 BO mm 5 WH A SENSOR 3 CBE F SENSOR 1 3 8 BL 2 OJ t OOo 1110 9 8 7 6 5 4 3 2 1 7 6 5 4 3 2 1 POWER SB YL BL BK SB SUPPLY CON2 CORD Di SB BN YL BU BL BN RD SB 1 N dL GNNL en g BK ANA A Ma ICE MAKER PART e 8 8 fe fe GN YL 25 4 we a 2 o GN B E ES 8 dd E I o mI 5 56 gt RD B0 15 BEES lose m Es g 7 lt Sob Al o z we 290 Z es 905 9 E a 5 25 22 BE 2 Fill BL Tf 7 L BL prostanren 1 PWB ASSEMBLY ICE MAKER COMP ACCESSORIES L ALTERNATIVE COMP ACCESSORIES START OPTION e COMP EG COMP Cr BK pote PLUG TYPE ICE MAKER PART CAPACITOR PART LBL START OPTION COMP EARTH
2. ES P N DESCRIPTION SPEC MAKER REMARK 1 1 6870JB8091A PWB PCB KS PJT GOOD BETTER DISPLAY DIO _ 16 2 1 3 6630A09159H WAFER 5 250 09 4 2 5 6600RRT002K SVITCH TACT JTP 230A JEIL 12V DC SOMA JEIL 6600JB8005A KPT 1105A KYUNG IN 61 TACT S W KPT 1109G KYUNGIN 6103 M 7 ODLEQUOAA LED LT1824 81 BCM TP GREEN 2 RI R7 FT E 8 000414809 DIODE SWITCHING IN4148 26MM PYUNG CHANG D 01 102 103 DELTA 12 10 68548500018 JUMP WIRE 0 6MM 52MM TAPING SN COMM 001 102 11 ie 9vwrofeoooo SOLDERSROSIN WIRE RSO 0120 HEE SUNG F 9 13 49111004 SOLDER SOLDERING H63A 14 59333105 FLUX 6 0 825 0 830 KOREA F H 206 KOKI 8 6 PWB DIAGRAM 8 6 1 PWB Main Assembly swag obo COMP AH ou t W COOLING F AN 2500 n a DEF HEATER FUSE M LAMP F 40W e LAMP R 09 DOOR S W R TOSHIBA TMP87C846N 101 RESET S CSTSO400MGO3 TEMP COMPENSATON REPLACNG RCR T P ad oun RESISTANCE OF COLD STORAGE ROOM NOTE RCR1 TEMP COMPENSATION 180KJ 2 5 WARM R3 56KJ 2 0 10KJ 23 peo 33KJ 1 5 AINO 18KJ 1 0 RCR1 1eKJ 0 5 C 10KJ 1
3. 15 01778202 3 IC DRAWING TMPB CB46N 42 SDIP BK KS BETTER GOOD MASK I TOSHIBA 0172 82022 1 16 0177 82022 IC DRAWING TOSHIBA ICI 0122 82022 17 OIZZJB2022 IC DRAWING TOSHIBA ICI 0122 82022 8 d 19 OIKE781200B 1 KIA78I2PI 12 IA KEC 2 20 OIKE78I200M KIA78I2PI 3DIP BK 12 REFORM KEC OIKE7805004 KIA78505P 3PIN DIP 22 OISTLMIOOIA IC STANDARD LOGIC M54563FP MITSUBISHI 20 R TP CONVERT MITSUBISH 23 0110777400 IC TOSHIBA TA7774AP 16 SDIP STEPPING MOTOR TOSHIBA 24 OIKEB50030C IC KEC KID65003AF I6SOP BK 7CH DRIVER 4 25 OIKE704200A 7042 BK 105 26 OIRH934600D IC ROHM ERS3LCAERF W 50 BK EEPROM ROHM 27 28 6920000001 RELAY ALEISBI2 MATSUSHITA 250VAC IZVDC NO VENTING NAIS RYI 29 6920WRDOIOA RELAY 061 125 YUYU 250VAC I2VOC IA YUYU 5 30 6920820038 RELAY ALDII2 MATSUSHITA 250VAC I2VDC IA OMRON RY2 RY4 31 6920 82009 BIRELAY 6558 14 250VAC 1205 OMRON RY5 33 34 6212880018 RESONATOR CERAMIC 5150400 MURATA 4MHZ 0 5 IbPF TP NONE MURATA OSCI J570 000128 35 6l02W5VO06A VARISTOR INRI4D331_ILJIN UL CSA VDE_BK ILJIN VAI 36 6102 8003 VARISTOR INRI40271_ ILJIN UL VDE 270V ILJIN VAI 37 6102 8800 8 VARISTOR INRI4DG2 ILJIN UL VDE BK 620V ILJIN V
4. MURATA 58 i 59 05015006609 RESISTOR FIXED CARBON FILM 150_OHM_ 4W 5 00 52 SMAR RL4 60 _0RD39006609 RESISTOR FIXED CARBON FILM 390 OHM 1 4 W 5 00 2 SMART RLI RL3 amp 04016006509 RESISTOR FIXED CARBON FILM 100 OHM 1 4 W 5 00 TAS2 SMAR R5 62 ORJIOOIEG72 RESISTOR METAL GLAZED CHIP IK OHM 1 8 W 5 2012 R TP ROHM RI6 63 ORJZ00IE672 RESISTOR METAL GLAZEDICHIPI 2K OHM 1 8 W 5 2012 R TP ROHI E 64 _ 09020016609 RESISTOR FIXED CARBON FILM 2K OHM 1 4 W 5 00 SMAR R6 RI2 amp 5 ORH2200L622 RESISTOR METAL GLAZEDICHIP 220 OHM 1 8 W 2012 5 00 D RI7 65 ORJZ20IE672 RESISTOR METAL GLAZEDICHIP 2 2K OHM 1 8 W 54 2012 R TP ROHM 67 0RJ470IE672 RESISTOR METAL GLAZEDICHIP 4 7K OHM 1 8 W 5 2012 ROH RI 68 0RJ470IE672 RESISTOR METAL GLAZEDICHIP 4 7K OHM 1 8 W 5 2012 ROH 69 0 047016609 RESISTOR FIXED CARBON FILM 4 7K OHM 1 4 W 5 00 TA52 SMAR 70 _0RJI002E672 RESISTOR METAL GLAZED CHIP OHM 1 8 W 5 2012 R TP ROH 71 ORJIOO2E672 RESISTOR METAL GLAZEDICHIP OHM 1 8 W 5 2012 ROH 72 0010026609 RESISTOR FIXED CARBON FILM OHM 1 4 W 5 00 2 SMAR R3 RA RCRIRIS RIS 73 0RJ2702E672 RESISTOR METAL GLAZEDICHIP 27 OHM 1 8 57 2012 ROHM 74 ORJIOO4E672 RESISTOR METAL GLAZEDICHIP OHM 1 8 W 5 2012 R TP ROHM R2 75 ORJ 6I2E472 RESISTOR FIXED METAL FILM OHM 1 4 W 1 004 TA52 SMAR RRI RDI 76 ORJIG22E472 RESISTOR FIXE
5. M 3 s Elie STARTER SEALED TERMINAL Resistance Starter Capacitor Running Figure 12 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 ofthe 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 notto 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 PTC is damaged the resistance value may be altered This can cause damage to the compressor
6. Poor or broken or open contact Replace indicated component Shorted Check rating of OLP Lack of capacity Fan motor doesn t run Wire is open or shorted Replace gt indicated component Coil is shorted or open Check Fan Motor Check wiring circuit Heavy frost buildup on evaporator Check current flow in the following components Sensor Fuse M Replace Open indicated component Check current flow in Replace the defrost heater defrost heater 12 6 4 SERVICE DIAGNOSIS CHART COMPLAINT POINTS TO BE CHECKED REMEDY No Cooling 5 the power cord unplugged from the outlet Plug into the outlet Check if the power switch is setto OFF Setthe switch to ON Check if the fuse ofthe power switch is shorted Replace the fuse Measure the voltage of the power outlet lf 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 unitis placed too close to the stove Place the unitaway from these heat sources gas cooker or in direct sunlight 15 the ambient temperature too high or Lower the ambient temperature the room door closed Check if food put the refrigerator is hot Putin foods after they have cooled down Did you open the door of the un
7. compressor NO 10 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 a Tester Figure 19 Observation value is 115V 60Hz 6 8 2 30 Replace PTC Starter The resistance value is 0 short or 8 open Shows continuity Separate OLP from compressor and check resistance value between two terminals of OLP whit a tester Figure 20 Check another electric component Replace OLP Figure 20 11 6 3 OTHER ELECTRICAL Not cooling at all OMPONENTS Compressor doesn t run gt Poor cooling performance Check for open short or incorrect resistance readin in the following component a Starting devices Short open or broken Poor contact or shorted b OLP c Compressor coil J Coil open or shorted Replace d Wiring harness oor contact indicated component or shorted gt Compressor runs poorly Advise customer that the power supply needs to be checked Check starting voltage Check voltage at starting devices Check current flowing in sub coil of Compressor Low voltage by an electrician
8. 3 C 2 5 C 2 C 1 5 C 1 C 0 5 C No 0 5 C 1 C 1 5 C 18k Down Down Down Down Down Down Down Change Up Up Up 4 C 3 5 C 3 C 2 5 C 2 C 1 5 C 1 C 0 5 C No 0 5 C 1 C 33k Down Down Down Down Down Down Down Down Change Up Up 4 5 4 3 5 3 C 2 5 C 2 C 1 5 C 1 C 0 5 C No 0 5 C 56k Down Down Down Down Down Down Down Down Down Change Up 5 C 45 C 4 C 3 5 C 3 C 2 5 C 2 C 1 5 C 1 C 0 5 C No 180k Down Down Down Down Down Down Down Down Down Down Change NOTE This circuit is designed to inputthe necessary temperature compensation values into the MICOM This adjusts the refrigerator temperature which is different in each model 28 8 2 8 Key Button Input amp Display Light On Circuit The circuit shown above determines whether a function control key on the operation display is pushed It also turns on the corresponding function indication LED DISPLAY The drive type is the scan type CONS N E 33 N CON101 y 8H 1 i 54 P135 7H 2 p15 36 6 AN 3 685 16 57 feu 5H4 MICOM 9 aus H d 390J 10 RL2 3H6 11 RL3 390J 217 12 RL4 P04 RT 1 8 150 LL 11 Re 949 ng R4 100J 598 fu 29 8 3 RESISTANCE SPECIFICAT
9. Movable arm spring temper copper alloy Contact movable silver on copper Contact stationary silver on copper Slug plated steel Cover polyester UL 94 V 0 rated 42 Pin connector plated copper allo To engage 2 33 2 66 mm dia pin 3 Quick connect terminal brass conforms to UL 310 MEMA DC 2 DIN 46344 Figure 13 4 4 TO REMOVE THE COVER PTC 1 Remove the Cover Back M C 2 Remove the screw on Cover PTC 3 Remove two Housings on upper part of Cover PTC 4 Take out the cover PTC from upper to lower position like 1 5 Turn 45 in the direction of 2 and take it out 6 Assembly in reverse order of disassembly 5 CIRCUIT DIAGRAM e DIAGRAMA ELECTRICO CIRCUIT DIAGRAM
10. R38 26 1KF 77 p N MIR 2KJ CE9 DEFROST SENSOR IC 14 EA MICOM 225 T ao 7 SET 7 177 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 C SHORT CIRCUITED Freezer Sensor POINT A Voltage Refrigerator Sensor POINT Voltage 0 5 4 5 OV 5V Defrosting Sensor POINT Voltage 8 2 6 Refrigeration Compartment Stepping Motor Damper Circuit The circuit shown below is the damper circuit to regulate the refrigerator temperature CON6 el ic 9 16 7774 12 15 1 R41 842 Iu 14 2 STEPPING 1 10KJ 10KJ 10KJ B MOTOR 11 3 s 3 4 5 7 10 12 15 4 27 8 2 7 Temperature Compensation amp Overcooling Undercooling Compensation Circuit 1 Refrigerator Temperature Compensation Refrigerator Resistance Temperature Remark RCR Compensation 180K 4 2 5 C Compensation by IT 20 DN 33K 1 5 18 K 1 0 12K 0 5 10K 0 C Standard Temperature 82K 0 5 C Compensation by 56K im p 3 3K L5C 2K 2 0C 470 2 5 R3 10KJ RCR1
11. 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 1 6 sec The water amount will vary depending on the water control switch setting as 2 7 sec mE well as the water pressure of the connected water line 3 8 sec L 1 17 7 2 5 Function TEST 1 This is compulsory operation for test service cleaning etc Itis operated by pressing and holding the Cube Size button for 3 second 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 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
12. the refrigerator in a firm place Remove the objects Fixthe 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 15 the refrigerator level 15 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 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 e The unit smells of plastic Clean the inside of the unit Wrap foods that have a strong odor e New products smell of plastic but this will go away after 1 2 weeks Other possible problems Check if frost forms in Not the freezer gt defrosting Check the refrigeration system The system gt is faulty Check the Thermistor The operation of m the Thermistor is incorrect 13 Check Components of the defrosting circuit Perform sealed system repair Replace the Thermistor 6 5 REFRIGERATION CYCLE Troubleshooting Chart STATE OF STATE OF THE TEMPERATURE kiti THE UNIT EVAPORATOR Or THE REMARKS COMPRESSOR PARTIAL Freezer Low flowing sound of A little hig
13. the test mode is cleared and the error code is displayed 6 While an error code is displayed the test mode will not be activated MODE MANIPULATION CONTENTS REMARKS 5 1 Push ULTRA ICE 1 Continuous operation of the key and ADJ UST key of COMPRESSOR Freezer Temperature atthe 2 Continuous operation of the freezer fan same time over 3 3 STEPPING DAMPER OPEN seconds 4 Defrosting Heater OFF 5 Every DISPLAY LED ON TEST2 Push ULTRA ICE 1 COMP OFF Reset if the key and ADJ UST 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 ULTRA ICE Reset to the previously setting before The compressor will key and ADJ UST key of TEST MODE Start after a 7 minute Freezer Temp at the same delay time over 3 seconds in TEST MODE 2 NOTE LED CHECK MODE 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 relesed the previous mode is restored Freezer Fan RPM Variable Check In case the freezer fan is in operation when the ADJ UST 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 s
14. your refrigerator has icemaker remove the icemaker first 2 Remove the grille by pulling it out and by loosening screw Remove the Fan Motor assembly by loosening 2 screws and disassemble the shroud e FAN MOTOR Q BRACKET a 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 Fuse M is a safety device for preventing over heating of the Heater when defrosting At 72 C itturns the Defrost Heater off 1 Pull outthe grille assembly Figure 6 2 Separate the connector with the Defrost Control assembly and replace the Defrost Control assembly after cutting the Tie Wrap Figure 7 Pull outthe fan and separate the Fan Motor and Bracket Pull outthe fan and separate the Fan Motor and Bracket 3 5 1 Refrigerator Compartment Lamp 1 Unplug the power cord from the outlet 2 Remove refrigerator shelves 3 Release the hooks on both ends of the lamp shield and pull the shield downward to remove it 4 Turn the lamp counterclockwise 5 Assemble in reverse order of disassembly Replacement bulb must be the same specification as the original Max 60 W 2EA Figure 9 3 5 2 Freezer Compartment Lamp 1 Unplug refrigerator or disconnect power 2 Reach behind light sh
15. 0KJ 0 BASIS 8 2KJ 0 5 5 6KJ 10 33KJ 15 2 0 C COLD 470J 2 5 FIG 1 CIRCUIT DIAGRAM 36 podia 4 12 8H 1 P13 35 TH 712 15 6 3 A 37 s Nr gt d 5 4 9 Fi Fe F3 dd X DAS 3904 445 10 FS F6 F7 bi 3904 316 Re R3 R4 Pos RL3 3904 217 R7 12 04 RA 1H8 22 150J Ld pa Five FEER d Tu FREEZER REFRIGERATOR PWB_ASS Y DISPLAY P63 26 BS RFI CON4 AIN3 a 16 2 225 a Tour yl F SENSOR pez a OR 4 AIN2 2KJ 3 223 T Tour R SENSOR Pei 24 79 Re 4 T B 5 exo BT a four off 7 D SENSOR 50V 6 CONS Pto 31 HE N 2KJ 1 3 223 E 2 R DOOR S W P67 30 R9 59 lt 3 F DOOR S 23 241 9 N 946 106 __ 15 CE9 11 2 A 5 R13 MIS R15 14 1 6 STEPPING pea 27 i toky Stjopa TA7774F 5 MOTOR P65 28 B 6 7 29 10 P66 3 105 8 6 8 13 16 39 41 n7 37 EV CAUTION
16. 10KJ MICOM P60 AINO b Table of Temperature Compensation by adjusting the resistance difference from the current temperature e g If the refrigerator compensation resistance RCR is changed from 10K the current resistance to 18K the adjustment resistance the temperature ofthe refrigerator rises 33 8 F PC 2 The temperature compensation for refrigerator compartment is in the following table Revised resist ae 470 5 6k 82 10 12k 18 56 180k Present resistant No 0 5 1 C 1 5 C 2 C 20 C 3 C 35 4 C 4 5 C 5 C 470 change Up Up Up Up Up Up Up Up Up Up 0 5 0 5 1 C 1 5 C 2 C 2 5 3 C 3 5 C 4 C 4 5 2k Down Up Up Up Up Up Up Up Up Up 1 C 0 5 C No 0 5 C 1 C 1 5 C 2 C 2 5 C 3 C 3 5 C 4 C 3 3k Down Down Change Up Up Up Up Up Up Up Up 1 5 1 C 0 5 C No 0 5 C 1 C 1 5 C 2 C 2 5 C 3 C 3 5 C 5 6k Down Down Down Change Up Up Up Up Up Up Up 2 C 1 5 C 1 C 0 5 No 0 5 C 1 1 5 2 C 2 5 C 3 C 8 2k Down Down Down Down Change Up Up Up Up Up Up Refrigerator 2 5 C 2 C 1 5 C 1 C 0 5 C No 0 5 C 1 C 1 5 C 2 C 2 5 C RCR 10k Down Down Down Down Down Change Up Up Up Up Up 3 C 25 2C 1 5 1 C 0 5 C No 0 5 C 1 C 15 C 2 C 12k Down Down Down Down Down Down Change Up Up Up Up 3 5
17. 1234567 ADJUST WARMER 48 PECOMVEMEED COLDER WARMER 415 FE COMMEMOED COLDER ADJUST ERROR CODE on display panel LEDOFFLEDON O ERROR CODE CONTENTS REMARKS 1 Alf O Cut or short circuit wire Failure of MP Inspect Connecting 2 Refrigeratorsensot Alof O O Cut or short circuit wire Wires on each sensor 3 2 2 Alof O Cut or short circuit wire Snapping of defrost 2 hours later after heater or Temperature 4 Poor of defrost Alof e e o starting defrost If fuse pull out of sensor doesn t be Connector indicated over 46 F 89C minimum 2 Hours after failure occurs If there is no fan motor Poor motor hocking to 5 Failure of BLDC fan off e o o o signal for more than wires of fan contact of motor at freezing compartment 65 seg in operation fan motor structures to fan snapping or short of lead 21 8 1 10 1 The Test mode allows checking the and the function of the product as well as finding out 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
18. AI 38 000400709 DIODE RECTIFIERS 4007 MOTOROLA I DELTA DI D5 39 d d 40 E 4 0 2286 610 CAPACITOR AL ELECTROLYTIC 2200 UF _SMS SG 35V M FL BULK SAM HWA CEI 42 50 CAPACITOR FIXED ELECTROLYTIC 1000UF 5 6 56 35V 20 FL BULK SAM HWA 43 8 CAPACITOR AL ELECTROLYTIC 1000 UF SMS SG 25V M FL TP 5 SAM HWA CE2 44 0 4776 6 8 CAPACITOR FIXED ELECTROLYTIC 470UF_SMS SG 25V 20 FL TP 5 SAM HWA CE3 45 OCE2276F638 CAPACITOR FIXED ELECTROLYTIC 220UF 5 5 56 I6V 20 FMS TP 5 SAM HWA CE4 46 OCEIO76H638 CAPACITOR FIXED ELECTROLYTIC 000 5 5 56 25V 20 FMS TP 5 SAM HWA 47 OCElO66K638 CAPACITOR FIXED ELECTROLYTIC SMS SG 50V 20 FMB TP 5 SAM HWA 48 OCEIOB6K638 CAPACITOR FIXED ELECTROLYTIC SMS S6 50V 20 FMS TP 5 SAM HIA CES 49 OCE476IH638 CAPACITOR FIXED ELECTROLYTIC 47UF 5 5 56 25V 20 FMS TP 5 SAM CEb 50 0C02231N409 CAPACITOR POLYESTER 0 022 UF D J PE TP SAM 5 OCKIOZDK96A CAPACITOR FIXED CERAMIC HIGH DIELECTRIC INF 2012 50V 80 20 R TP X R 52 OCK223DK96A CAPACITOR FIXED CERAMIC HIGH DIELECTRIC ZZNr 2012 50V 89 20 R TP_X7R MURATA CC7 CCII 53 S4 OCKTOADKOAA CAPACITOR FIXED CERAMIC THIGH DIELECTRIC IOONE 2012 50V_R TP_ GRM4OX7RIOAKSOPE MURATA CCI 0C5 55 gt 56 OCKI040K049 CAPACITOR FIXED CERAMIC HIGH DIELECTRIC D 50V 80 20 FIYSV
19. COM ee 19 11 Refrigerator Exploded View OO SAFETY PRECAUTIONS Pleasereadthefollowinginstructionsbeforeservicingyour refrigerator 1 Checktherefrigeratorforcurrentleakage 7 Beforetiltingtherefrigerator removeallmaterialsfrom onorintherefrigerator 8 Whenservicingtheevaporato rwearglovestoprevent injuriesfromthesharpevaporatorfins 9 Serviceontherefrigeratorshouldbeperformedbya qualifiedtechnician S ealedsystemrepairmustbe performedbyaCF Ccertifiedtechnician 2 Topreventelectricshock unplugbeforeservicing 3 Alwayschecklinevoltageandamperage 4 Usestandardelectricalcomponents 5 Don ttouchmetalproductsinthefreezerwith wet hands Thismaycausefrostbite 6 Preventwaterfromspilingontoelectricelementsorthe machineparts 1 SPECIFICATIONS Me BC205141T Titanium 20cuft Dimensions in 29 8 W x 32 2 D x 67 9 H Refrigerant R134A 4 202 Climate Class Temperate N F control 115 60 Case Material EMBO Normal Door Material VCM Reversible Door Yes 1 40W Blue 2 40W Blue 1 plastic 2 1 3 2 2 3 1 full 1 Wire 4 fix Humidity Control Wire lower Yes Yes Yes 2 Y E 2 PARTS IDENTIFICATIONS Use this section to become more familiar with the parts and featur
20. D METAL FILM 16 2K OHM 1 4 W 1 00 2 SMART FFI UH 78 79 3035650 FUSE DRAWING 25V SAM JU 80 TRANSISTOR KRAIOGMIKRA22061 e BI OTRIOGO09AF TRANSISTOR 106M 05 07 82 TRANSISTOR KTC3I98 TP Y_ KTCIBISIKEC 83 6908 83002 BUZZER 22208 DAE YOUNG PIEZO 2KHZ 75DBICHINAI DAE YOUNG BUZZER 84 6600RRTO0IZ SWITCH JTPI280A6 12V DC SOMA 85 6854850001A JUMP WIRE 52MM TP TAPING SN 8MM 4 6 86 6854B5000lA JUMP WIRE 0 6 52MM TAPING 5 JI 46 38 JIO JI4 JI7 J20 87 _ 6854850001 JUMP WIRE 0 6MM 52MM TP TAPING 5 12 5 JI3 88 6854850001A JUMP WIRE 0 6MM 52MM TP TAPING 5 12 5 J07 B9 6854B5000lA JUMP WIRE 0 6MM 52MM TP TAPING SN 90 68548500014 JUMP WIRE 0 6 52MM TP TAPING SN 91 49820983003A HEAT SINK 30 25 30 IC I2V R B50 5l 52 53 54 55 56 2PIN SCREW 3 1102 92 _ 15870302418 SCREW TITE 5 BINDING HEAD 03 0 18 0 MSWR3 FZY gt 1 2 93 _9VWF 0120000 SOLDER ROSIN WIRE RSO 01 20 SUNG A 94 49111004 SOLDER SOLDERING 95 59333105 FLUX 56 0 825 0 830 KOREA 206 KOKI 34 8 5 3 PWB Assembly Dysplay and Parts List 6 CON101 L101 p ap ab dp Gb amp amp e 2 F3 F4 F5 F6 F7
21. ION OF SENSOR TEMPERATURE DETECTED RESISTANCE OF FREEZER RESISTANCE OF REFRIGERATOR amp BY SENSOR SENSOR DEFROST SENSOR amp ROOM SENSOR 20 C 22 3 77K 15 C 16 9 K 60K 10 C 13 0K 47 3K 5 C 10 1K 38 4K 0 C 7 8K 30K 5 6 2 241 10 4 9 19 5 15 3 9 15 9 20 31K 13K 25 2 5 11K 30 C 2 0K 8 9K 40 C 14K 6 2K 50 C 0 8K 4 3K 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 30 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 2 DISPLAY LED OPEN and check display 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 fo
22. LG REFRIGERATOR CAUTION BEFORE SERVICING THE PRODUCT READ THE SAFETY PRECAUTIONS IN THIS MANUAL MODELS LBC20514TT 5 Safety PrecautionS sss Sas nnn nnn nnn nnn 2 I SOECIICACON M M Ge 2 Parts Identifications i ce ix nun unn tpa ann sia N E RE A 3 a ee eer M D Door T Door Switch sD Fan and Fan 6 Defrost Control Assembly sacra ET Laban des 6 Lamp rR 6 Refrigerator Control Box 6 Multi Duct 6 4 Ajustment a NM Compressor 7 PTC Starter 7 OLP Overload Protector 8 To Remove the Cover PTC 8 5 Circuit Di graM sssrin ass M 9 6 Troubleshooting s s s sss ona nns cae den aua nnn nnn nnn canadian sl Compressor and Electric ML QM EDAM QM ME PTC and OLP Other Electrical Components Service Diagnosis linares A adiens Die nda Inu Rin 13 Refrigeration Cycle T TE 14 7 Operation Principle and Repair Method of Ice Maker 8 Description of Function and Circuit of MI
23. MA INPUT POWER 33 8 5 2 Replacement Parts List P NO DESCRIPTION SPEC MAKER REMARK 6870JB8089A KS PJT GOOD MDL DOO SAN 11 6 2 B 1 3 6170 B2002H TRANSFORMER LOW VOLTAGE 240V YES GR MICOM ONE TAB TAE SUNG TRANS 4 6170282002 TRANSFORMER LOW VOLTAGE 260 I5V YES GR MICOM ONE TAB TAE SUNG TRANS 5 6170 B202R TRANSFORMER LOW VOLTAGE 40V YES GR MICOM ONE TAE SUNG TRANS 5 6170820029 TRANSFORVER LOW VOLTAGE 15 YES GR MICOM ONE TAE SUNG TRANS ia s x z E B 6630 09106 CONNECTOR CIRC WAFER YW3965 07AV 7PIN 3 96 STRAIGHT SN YEON HO CONI 9 6630081060 CONNECTOR CIRC WAFER YW396 09AV YEON HO CON2 10 66304081068 CONNECTOR CIRC WAFER YW396 05AV YEON HO 6630J880076 CONNECTOR CIRC WAFER 917786 1 2 5MM STRAIGHT SN ANP CONS 12 6630J88007H CONNECTOR CIRC WAFER 917787 SPIN 2 5MM STRAIGHT SN CONS 13 6630J88007E CONNECTOR CIRC WAFER 917784 1 2 5MM_STRAIGHT_SN AMP
24. PART AND N ACCESSORIES ON CIRCUIT DIAGRAM SUBJECT TO CHANGE IN DIFFERENT LOCALITIES AND MODEL TYPE PTC A COMBO KIT PTC OLP MEZ481 08403 BK BLACK WH WHITE BN BROWN BO BRIGHT ORANGE SB SKY BLUE RD RED YL YELLOW PK PINK GN GREEN PR PURPLE GY GREY BL BLUE 6 TROUBLESHOOTING 6 1 COMPRESSOR AND ELECTRIC COMPONENTS gt Remove PTC Starter Rated voltage from compressor and 10 measure voltage between Terminal C of compressor and terminal 5 or 6 of PTC YES No voltage OLP disconnected Replace OLP Check connection condition Reconnect Applied voltage isn t Advise customer that in acceptable range power supply needs to 5 gt 115 10 checked by electrici The range of resistance is between 1 50 ok Replace compressor Refer to Page 12 Check Check the resistance resistance of between M C S C and motor M S in motor compressor compressor Open or short Check Check resistance of resistance of two terminals in PTC Starter PTC Starter Check OLP Check resistance of two terminals in OLP te YES YE Check Check the power supply Supply Did S starting state under load voltage rating pb is OK Compressor attempting with 109 to re start after being off Replace th for 5 minutes the
25. US 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 PLUS operates for more than 90minutes the ICE PLUS will operate for two hours after defrostis completed 3 IFICE PLUS is pressed during defrost ICE PLUS LED is on butthis 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 ofthe delay time 5 The fan motor in the freezer compa
26. Use the part number to order part not the position number EXPPLODED VIEW CASE PARTS EV FREEZERPARTS CAUTION Use the part num ber to o REFRIGERATOR PARTS CAUTION Use the part number to order part not the position number 40 DOOR PARTS CAUTION Use the part number to order part not the position number 41 EV WATER and ICE MAKER PARTS CAUTION Use the part number to order part not the position number 42 LG Electronics Inc MFL62526001 May 2009
27. Vdc 5V VA1 is a part for preventing over voltage and noise When 385V or higher power 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 23 8 2 2 Oscillation Circuit 50 XIN 05 1 T CSTS0400MG03 l Ha 2 XOUT R11x 1MJ 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 specific replacement parts since calculating time by the IC1 may be changed If changed the OSC1 SPEC will not work 8 2 3 Reset Circuit e gt 107 3E 2 29 RESET 5 57 CC6 104 7 177 d C1 MICOM The RESET circuit allows all the functions to start at the initial conditions by initializing various parts including the RAM inside the MICOM IC1 when the poweris 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 MICOM RESET terminal During a normal operation 5V is applied to the RESET terminal If a malfunction occurs in the RESET IC the MICOM will not operate 24 8 2 4 Load Buzzer Drive amp Open Door Detection Circuit 1 Load Driv
28. and result in a no start or hard to start condition 5 Always use the PTC designed forthe 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 forthe Refrigerator It prevents the Motor Coil from being started in the Compressor 2 For normal operation of the OLP do notturn the Adjust Screw of the OLP in any way OVERLOAD PROTECTOR cross section Part D Customer part No Name number Base phenolic ERA UL 94 V 0 rated 2 Movable arm support plated stee Electrical characteristics Me minadon Stationary contact support part number part number plated steel Heater support plated steel Heater resistance alloy Disc thermostatic alloy
29. check and repair as needed After water is supplied the normal CYCLE is followed icemaking gt Harvest gt Fill Park Position Five seconds after Stage 5 is completed the icemaker returns to MICOM control The time needed to supply water AB resets to the pre test setting Diagnosis TABLE STAGE ITEMS INDICATOR REMARKS E Five seconds after heater starts heater will 1 HEATER go off if temperature recorded by sensor is 10 50 F Jor lever is in up position Five seconds after heater starts you can 2 MOTOR confirm that motor is moving E You can confirm Hall IC detection of position 3 HALL IC TRAY 1 Two seconds after detection of initial 4 SOLENOID VALVE position you can confirm that valve is on E HALL IC You can check when the Hall IC is sensing a ful 5 ice condition Ifthere is a water fill error the LEVER fifth LED is noton 6 Reset Retur 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 see previous page operates properly Icemaking Make sure that wire 2 Sensor Open or shorted wire or se
30. detect lever checks if the ICE BIN is full operate LINE and SERVICE press and hold the Cube Size button for 3 seconds The icemaking will run through 3 stages Harvest Fill Icemaking Test Mode Y Y vy 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 16 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 completion of the water fill operation 3 The icemaking function is completed when the sensor reaches 7 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
31. e Condition Check E ale i 4H POWER 3 ICE MAKER CON2 9 7 Su 17 3 1 eke comp M me sr I R61 AMS RY2 ALE15B12 1 05 514 38 t P35 COOLING F AN 112 nes Y amp HE DEF HEATER FUSE M _ t P36 DN 2 gt R57 ATKI FREEZER DOOR SWITCH LAMP R RYS 60 2 8 ALD112 REFRIGERATOR DOOR SWITCH E 3 15 o lt H2 WATER VALVE 28 5 E T CONS RC FILTER P40 MICOM R58 ATKI TCM VALVE LOAD TYPE COMP LAMP POWER MODE DISPENSER OPTIONAL MDL Measurement Location IC 4 NO 13 NO 14 NO 16 NO 12 NO 15 ON 1V or below Condition OFF 12V 2 Fan motor driving circuit freezing compartment fan 1 This circuit makes standby by cutting off power supplied to 155 inside of the fan motor in the fan motor OFF 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 ofthe fan motor part b part part MOTOR OFF 2V less o
32. es 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 6 e Optibin Crisper Keeps fruits and vegetable fresh and crisp Ice Tray Bin Q wie Durabase Dairy Bin Design A Door Qwie Freezer Shelf Refrigerator Door Rack O Freezer Light Q Freezer Door Rack some models 3 DISASSEMBLY 3 1DOOR Refrigerator Door 1 Remove the hinge cover by pulling it upwards 2 Loosen the hexagonal bolts attaching the upper hinge to the body and lift the freezer door MM HINGE COVER BOLT HINGE Figure 1 3 Pull outthe door gasket to remove from the door foam assembly GASKET Figure 2 Freezer Door 1 Loosen the hexagonal bolts attaching the lower hinge to the body to remove the refrigerator door only LOWER HINGE BOLT Figure 3 2 Pull outthe door gasket to remove from the door foam assembly 3 2 DOOR SWITCH 1 To remove the door switch pry it out with a slotted type driver as shown in Figure 4 Disconnectthe lead wire from the switch LEAD WIRE DOOR SWITCH Figure 4 3 3 1 Remove the freezer shelf If
33. her than Refrigerant level is low due to compartment and refrigerant is heard and frost ambient leak LEAKAGE refrigerator don t forms in inlet only temperature Normal cooling is possible by m cool normally restoring the normal amount of 2 refrigerant and repairing the leak gt No discharging of refrigerant m ICE Freezer Flowing sound of refrigerant 2 Normal cooling is possible by compartment and is not heard and frost isn t restoring the normal amount of refrigerator dont formed refrigerant and repairing the leak cool normally PARTIAL Freezer Flowing sound of refrigerant 7202 nen D CLOG compartment and is heard and frost forms in 2 reirigerant refrigerator don t inlet only emperature The capillary tube is faulty m cool normally UJ 5 WHOLE Freezer Flowing sound of refrigerant is Equal to ambient Normal discharging of the CLOG compartment and not heard and frost isn t temperature refrigerant refrigerator dont formed cool MOISTURE Cooling operation Flowing sound of refrigerant is Lower than ambient Cooling operation restarts when CLOG stops periodically not heard and frost melts temperature role the inlet of the capillary tube Freezer and Low flowing sound of Alittle higher than Low pressure at high side of 2 9 SSION refrigerator don t refrigerant is heard and frost ambient compressor due to low 3m cool form
34. ield 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 10 GRILLE ASSEMBLY DEFROST CONTROL ASSEMBLY T 7 8 2 Remove the Refrigerator Control Box by pulling it downward 3 Disconnectthe lead wire on the right position and separate the lamp sockets 3 7 MULTI DUCT 1 Remove an upper and lower Cap by using a flat screwdriver and loosen 3 screws Figure 11 Disconnectthe lead wire on the bottom position Figure 11 4 USTMENT 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 repai
35. is sufficient and speed of cool air are sufficient by touching the check supplied on the REFRIGERATOR FAN MOTOR is poor Replace FAN MOTOR Passage of cool air is blocked Remove impurities EVA frozen See DEFROSTING is poor 3 Door Line contact Check door seal when door is closed Door liner damaged Replace Door liner DEFROSTING is poor NO DEFROSTING 1 If HEATER emits heat USE TEST MODE2 forced DEFROSTING HEATER disconnection Replace HEATER TEMPERATURE FUSE Replace TEMPERATURE disconnection FUSE Connection is poor Check EVAPORATOR connection and wire of MAIN PWB CONNECTOR DEFROST SENSOR is poor Replace DEFROST SENSOR HEATER RELAY is poor Replace RY3 of MAIN PWB 2 If DRAIN PIPE is blocked Check DRAIN PIPE DRAIN PIPE is blocked Remove ice and impurities Check HEATER PLATE resistance 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 REFRIGERATOR DOOR is closed properly Replace GASKET 32 8 5 PWB ASSEMBLY AND PARTS LIST 8 5 1 Main PWB Assembly 00 9 YO Dea ee LM nx lt 5 dedo J17 Jig AO R2 J19 O
36. it 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 Setthe control to Recommended position Foods in the 15 food placed in the cooling air outlet Place foods in the high temperature section Refrigerator front part are frozen Check if the control is setto colder position Setthe control to Recommended position 15 the ambient temperature below 41 5 C Setthe control to Warm position Condensartion or ice forms inside the unit 15 liquid food sealed Check if food put 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 Putin 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 ofthe surrounding air are high e Is there gap in the door gasket e 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 Tray Drip is not firmly fixed Check if the cover of the compressor enclosure in the front lower side is taken out Adjustthe Leveling Screw and position
37. ng 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 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 or more POWER 1 2 COMP 12 Freezer FAN when unitis newly ON 5 purchased when moved EN 3 POWER ini2second Defrosting ini0second Defrosting Temperature of defrosting ON gt heaterON heater OFF o sensoris lower than 45 2 when power cuts SERVICE 1 2second COMP in 1 2 second Freezer FAN gt Reset normal operation Total load in 7 minute COMP ini2second Freezer from TEST MODE OFF 20 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 REFRIGERATOR TEMP ICE PLUS FREEZER TEMP gt 1234567 ge
38. nsor on each sensor is malfunction connected F 1 Ejector blades have not reached Check 3 Icemaker Kit the park position after 18 HALL IC MOTOR malfunction minutes from start of harvest HEATER RELAY mode ERROR indicators in table can be checked only in TEST mode 18 8 DESCRIPTION OF FUNCTION amp CIRCUIT OF 8 1 FUNCTION 8 1 1 Function 1 When the appliance is plugged in itis set 4 for Refrigerator and 4 for freezer You can adjust the Refrigerator and the Freezer control temperature by pressing the ADJ UST button 2 When the power is initially applied or restored after a power failure it is automatically set to 4 amp 4 REFRIGERATOR TEMP ICE PLUS FREEZER TEMP gt 1234567 a 12248597 gt ADJUST WARMER 415 PECOMMEMEED COLDER WARMER 415 PECOMNEMOFD COLDER ADJUST 8 1 2 Control of freezer fan motor 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 To improve cooling speed and load corresponding speed the RPM of freezer fan motor shall change from normal speed to hign speed High speed 2500RPM Initial power on orload corresponding operation ICE PLUS Normal speed 2200 RPM general working conditions Fan motor stops when refrigerator of freezer door opens 8 1 3 ICE PL
39. peed or if normal speed to high speed for 30 seconds After 30 seconds it turns to its original RPM Demonstration MODE 1 When the ULTRA ICE key and UST 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 22 8 2 PCB FUNCTION 8 2 1 Power Circuit BD 0358460 TRANS 03 12 Sif RI d 4 L1 MICOM 2 o 2 2RVAC STR 1 4 66551 220 2401 105 Ua 100 1279 64 VDD POWER 0 7805 55 Varef 5 uro eel Lee 10 0 Tay 221 54 Vass 26 TEST The secondary part ofthe TRANSFORMER is composed of the power supply for the display the BLDC FAN Motor drive 15 5 V the relay drive 12 Vdc and the MICOM and IC 5 Vdc The voltage for each partis as follows PART 1 4 5 VOLTAGE 115 Vac 12 Vdc 15 5
40. rced COOLING blocked If less than 7 minutes pass OLP PTC is poor Replace OLP PTC 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 FAN MOTOR TEMPERATURE is operates forced COOLING incorrect CONNECTING WIRE is poor Certify the MOTOR and the connection of the black wire of the MAIN PWB CONNECTOR CON2 2 If DEFROSTING Check the amount of frost DEFROSTING is poor See DEFROSTING is normal sticking on tHSVAPORATOR 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 31 PROBLEM INDICATED BY CHECK CHECKING METHOD CAUSE SOLUTION COOLING is poor If REFRIGERATOR 1 1f FREEZER TEMPERATURE is FREEZER Make sure the TEMPERATURE isn ormal TEMPERATURE istoo low DOOR isattached is too low 2 If amount of cool air from Make sure that the amount FAN MOTOR
41. ring 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 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 dort contaminate the inside ofthe compressor Dust humidity and solder flux contaminate the cylinder and may cause noise improper operation or even cause itto 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 4 2 3 PTC Applied Circuit Diagram Starting Method for the Motor OVERLOAD PROTECTOR 2 COMPRESSOR t 1 MOTOR M
42. rtment rotates athigh 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 protectthe risk of lamp heat when Refrigerator door opens for 7 min refrigerator lamp is auto off 19 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 Closdd or Refrigerator Door 3Times 3Times 3Times 3Times Buzzer 4 i 30 sec 30sec 30sec 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 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 doesnt reach 46 4 F 8 C in 2 hours the defrost mode is malfunctioning Refer to the defect diagnosis function 8 1 9 4 Defrosti
43. s in inlet only temperature refrigerant level 5 o HNO Equal to ambient Nopressure in the high pressure compressing Flowing sound of refrigernat is om COMPRE operation not heard and there is no temperature part of the compressor z SSION frost 14 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 Equalization Test Equalization Test Very Slow Very Slow Very Fast Inefficient Compressor Partial Complete Restriction Restriction Condenser Temperature 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 15 7 OPERATION PRINCIPLE REPAIR METHOD OF ICE MAKER 7 1 OPERATION PRINCIPLE 7 1 1 Operation Principle of Ice Maker Power On Start Position Adjusts Ejector to Start Position with power on Icemaking d Waits until water becomes cold after starting the Icemaking operation Runs MOTOR to drop ice from the tray into the ICE BIN Harvest Mode Performs Icemaking Mode after supplying water by operating the SOLENOID in ICE VALVE Park Position With the
44. v 5V MOTOR ON 13V 15V ov 2V 3V CON4 5 P52 Lec PDO P WN 223 2 47K P51 ou 1 MICOM i 25 3 Buzzer Drive Condition Check Q1 PQ272207PL 20 2000 KRC106S _ 21 TOA R9 mv 1KJ HH 12 ces Condition Tone Ding Dong when the button on Alarm for open door the display is pushed beep beep beep ment Location 10055 025 016 25 05s 0 55 lt lt i 5V i 5V IC1 A 0v 0v D 5V 2 63 kz Di 2 21 ny IC1 B 2 63 kz Ding 2 21 kz Dong 263 kaBeep OFF la 0v 4 Open Door Detection Circuit Check CON6 R40 NS 65 R39x 2KJ dl CC15 T 2KJ 6 FREEZER DOOR I B SWITCH 777 REFRIGERATOR DOOR SWITCH CONS P77 Measurement Freezer Location PIN NO 63 amp PIN NO 8 Refrigerator Door Closed 5V Open 0v 26 8 2 5 Temperature Sensor Circuit Nu e in CON6 16 2KF P64 90 12 gt 2KJ 4 7 FREEZER SENSOR 223 RRI Ray 11 61 77 R37 26 1KF 7 10 P65 L 2KJ o See REFRIGERATOR SENSOR 223 T RDI 9 66 62

REFRIGERATOR SERVICE MANUAL

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