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SERVICE MANUAL - Appliance Factory Parts

1. P NU DESCRIPTION SPEC MAKER REMARK 1 6870JB8096A PWB PCD CD2 PJT DELUXE VER 1 NAESU DUO SAN T 1 6 MAGIC ROOM 2 6170JB2013C TRANSF RMER SMPSICTIL CD2 CH PJT DELUXE NAESU IL TRANS 3 6630VM02707 CONNECTOR CIRC VAFER YW396 7 3 96MM 7P 2 4 6 YEON BKE 4 6630VM00509 CONNECTOR KCIRO VAFER YW396 9 3 96MM YW396 09AV RED YEON 5 6630VM02609 CONNECTOR CIRC VAFE YW396 9P 396MM 9P 2 4 6 8 YEON 6 6630VM01111 CONNECTOR CIRC YW396 3 96 YW396 11AV 1IP 2 4 6 8 10 YEON CLIN3 7 6630JB8007G ZETIK CIRC VAFER 917786 1 EE 2 3MM STRAIGHT SN CONS 8 6630JB8007J CONNECTOR CIRC WAFER 917788 1 AMP 10 2 5MM STRAIGHT SN CUNG 9 6630JB8007L DETIK CIRC VAFER 917790 1 12P 2 5 STRAIGHT SN CONG 10 6630JB8010A DETIK CIRC WAFER 917791 1 13P_2 0MM STRAIGHT SN 11 0IZZJB2030A C DRAWING TMP87C84IN 64 SDIP ST CD2 PJT NAESU MASK TOSHIBA C1 01ZZ JB2030B E OIPMGSKODIA C POWER MANAGEMEN
2. ene Zu mu EO sm ea eur Se 55 Varef I N w cea T ZO ZOIN EE Vass 2 TAB2 d bo rest A 9 RUNNING CAPACITOR 7 en Se EO Mr 5 1 7 i un eei GO Ee 3 3 DE DOOR IN 4 Ge 7 ry Ih cl 4 T pera Lannn lt L RYS DRE Le 4 5 Le oq KA Dea EN Fe gis ZE M T EO SOLENOID H 4 N EO ed all 1 15 i He eea 5 Taree ry Ju 1 lt lt 1 3 n 5 AO TU T d ex SOLENOID Tar Ly MES 3 s gt IR d S e TN etza P el amp HEK 3 D e d b 1 77 gt pre 40 TOSHIBA TMP87C841N IC1 TOSHIBA TMP87C841N IC1 Pas AND pet ANI e ans Pas Pst 22 Gi cc zr E HEATER SHEET DUCT DOORJ ASS Y DISPLAY WT SENSOR F SENSOR D SENSOR DAMPER HEATER HIBAR DOOR SW FEET R
3. Freezer Refrigerator Compartment Compartment _ Ter Door Rack Automatic Icemaker EEE Lamp Shelf Wire Plastic E Lower Cover Humidity Switch Water Filter Dairy Product Corner Lamp Shelf Door Rack Wine Holder Egg Box Snack Drawer Bottle Guide Shelf Door Rack Vegetable Drawer Vegetable Drawer Meat Drawer HOW INSTALL REFRIGERATOR 1 How to Adjust Door Height of Refrigerator Make the refrigerator level first If the refrigerator is not installed on a flat floor the height of freezer and refrigerator door may not be the same 1 If the freezer door is lower than the refrigerator door Insert a driver 2 into the groove 1 of the adjusting screw and turn in the direction of the arrow clockwise until the refrigerator is level 3 When the refrigerator door is lower than the freezer door Adjust the level when the refrigerator door is lower than the freezer door during the use of the refrigerator 1 Using the wide side of the tool for adjustment 3 turn the keeper nut 1 DA clockwise to loosen the keeper nut 2 Using the narrow side of the tool for adjustment turn the adjustment hinge 2 __ clockwise or _ 4 counterclockwise to level the refrigerator and freezer door 3 After setting the level of the door turn
4. BL N 1 RUNNING CAPACITOR BUN STARTING il CAPACITOR BLN HEATER SHEET le DUCT DOOR M T e COMPRESSOR OMPRESSOR PTCASSEMBLY BK BLACK BN BROWN BO BRIGHT ORANGE GY GRAY RD RED YL YELLOW GN GREEN PR PURPLE WH WHITE WH BK WHITE BLACK SB SKY BLUE PK PINK GN YN GREEN YELLOW BL WH BLUE WHITE RD WH RED WHITE 3854JK1010C 49 TROUBLE 1 TroubleShooting DIAGNOSIS CLAIMS CAUSES AND CHECK POINTS HOW TO CHECK 1 Faulty start 1 No power at outlet 2 No power on cord Bad connection between adapter and outlet faulty adapter The Inner diameter of adapter The distance between holes The distance between terminals The thickness of terminal r Bad connection between plug and adapter faulty plug The distance between pins Pin outer diameter 3 Shorted start circuit r No power on power cord Faulty soldering Internal electrical short Loose contact Large distance between male terminal Thin female terminal I Faulty terminal contact Terminal disconnected Bad sleeve assembly L Disconnected Weak connection Short inserted cord length
5. EE F FAN DISP MOTOR BLDC M C FAN MOTOR BLDC F DOOR OPEN PERCEPTION DEFROST SENSOR e RD PAA DEF HEATER FUSEMELTING F SENSOR 72 SOLENOID DISPENSER Com oor ICE MAKER MOTOR HALL ICE MAKER rk HEATER CORD TESTSW Loe Uh S W MAKER PART STOP SW PARTS ICE MAKER SENSOR 9 DISP LAMP Mere WHN DISPENSER LEVER SW 0 edik F DOOR SWITCH SWITCH RD STEPPING MOTOR RD 6 R2 SENSOR aucenwoToR RI SENSOR ee SOLENOID DOOR WH N OPEN PERCEPTION m SOLENOID DAMPER WH N PWB ASSEMBLY D OPTIONAL IWATERTANK 1 SENSOR AMBIENT CON101 SENSOR RD 1 BN 2 3 GOR 4
6. cm awe x Su Su e H mz E E EX gl al e receive m al 1 e x a SA w E E E JB 2 EX wo un um ps la E EZE E ed E E esze A A 8 EE BATON 2028 wel cw cm m L om 7 DUE EO cot E Rus 48 gj 8 48 8 48 110 eizi d E DEGO aa Ji e ge 22 BEZ x 8 SO eran en nm 090101 mm EE 1 RA GOO b TR 2 amp Ratt n m TAA E a Rus 5 rr ee AX gt 4 12 m 9 on L smoor 7 n GO 2 2 ccm e w i E mat ele E 95 sun 5 wH L simum JE i m sis n SIZ E ILI L ar 0030198 d m lll l x T T Mos 414 141 RIO Qn RIDES GEO 39 2 2 FUSE2 5 250V5A e m
7. Supporter disorted contact sounds Tilted during motor assembly Resonance Evaporator noise Evaporator pipe contact No damping evaporator Sound from refrigerant Stainless steel pipe shape in accumulator Sound from fin evaporator and pipe during expansion and contraction 3 Bowls and bottles make contact on top shelf 4 Refrigerator roof contact 5 Refrigerator side contact 6 Insufficient lubricants on door hinge 57 TROUBLE DIAGNOSIS CLAIMS CAUSES AND CHECK POINTS HOW TO CHECK 8 Faulty lamp freezer and refrigerator compartment 9 Faulty internal voltage short r Filament blows out Glass is broken Not inserted Loosened by vibration 1 Lamp problem 2 Bad lamp assembly 3 Bad lamp socket r Disconnection Bad soldering Bad rivet contact Short Water penetration Low water level in tray Bad elasticity of contact Bad contact corrosion 4 Door switch Defective Refrigerator and freezer switches are reversed Travlel distance Bad connection I Bad terminal contact Adiabatics liquid leak 1 Lead wire is damaged Wire damage when assembling Cover rr Outlet burr in the bottom plate Pressed by cord heater lead wire evaporator pipe 2 Exposed terminal m Compressor Compartment termina
8. Worn out tool blade r Capacity of OLP is small Characteristics of OLP is bad Bad connection OLP is off Power is disconnected Inner Ni Cr wire blows out Bad internal connection Faulty terminal caulking Cu wire is cut Bad soldering No electric power on compressor Faulty compressor Faulty PTC Power does not conduct Damage Bad characteristics Initial resistance is big Bad connection with be loose compressor Assembly is not possible Bad terminal connection 4 During defrost Start automatic defrost Cycle was set at defrost when the refrigerator was produced Disconnected copper wire Power cord is disconnected Measuring instrument Multi tester Check the voltage If the voltage is within 85 of the rated voltage it is OK Check the terminal movement E Check both terminals of power cord Power conducts OK No power conducts NG Check both terminals of OLP If power conducts OK If not NG Check the resistance of both terminals At normal temperature 6 OK If disconnected 50 TROUBLE DIAGNOSIS CLAIMS CAUSES AND CHECK POINTS HOW TO CHECK 2 No cooling 2 Refrigeration system is clogged m Moisture Residual moisture r Air Blowing Not performed clogged in the evaporator boshort Impossible moisture confirmation Low air pressure Leave it in the air
9. R2 sensor middle room Normal LED or LCD graphic on the C part turns on or Abnormal Drive Micom Abnormal LED or LCD graphic on the C part turns off Communication Ee egie or Normal LED or LCD graphic on D part turns on ater tank sensor A 1 LED or LCD hi the D tt ff LCD graphic on the 0 part turns The other LED or Ice maing sensor Normal LED or LCD graphic on the E part turns on LCD Graphics L Abnormal LED or LCD graphic on the E part turns off Turn On unit Normal LED or LCD graphic on F part turns on Abnormal LED or LCD graphic on F part turns off Ambient sensor Normal LED or LCD graphic on the G Better1 Model Only UL Abnormal LED or LCD graphic on the part turns on G part turns off era Note2 Freezer room notch temperature display and refrigerator room notch temperature display Failure code indication part are normally indicated in abnormal ambient sensor and indicated on the amvient temperature display except for the ambient temperature display other LEDs or LCDs are indicated normally LCD LED check function If simultaneously pressing express freezer button and freezing temperature adjustment button for a second a back light is turned on and all display LCD LED graphics on If releasing the button the LCD LED graphic displays the previous status the back light is tur
10. Ol NI AD 0 N FRAME FUNNEL LEVER SWITCH FUNNEL BUTTON LEVER HOLLDER BUTTON SOLENOID ASSEMBLY SPRING LEVER HOLDER CAP ASSEMBLY DUCT CAP DUCT DISPENSER LEVER FOAM NEW RUBBER CAP DECO DRAIN 7 Assembly Duct Detailed Drawings 93 EV EXPLODED VIEW FREEZER DOOR PART EV EXPLODED VIEW REFRIGERATOR DOOR PART EV EXPLODED VIEW FREEZER COMPARTMENT ari N 96 EV EXPLODED VIEW REFRIGERATOR COMPARTMENT 97 EV EXPLODED VIEW ICE amp WATER PART 98 EV EXPLODED VIEW MACHINE COMPARTMENT S UN EV EXPLODED VIEW DISPENSER PART odel LSC27926ST_ Onl 100 LG Electronics Inc February 2009 MFL62215904
11. 1 Outside temperature sensor at the right Hinge Cover U of refrigerator senses ambient temperature and displays the outside temperature in the upper of ROOM TEMP text on the display part 2 Ambient temperature is displayed up to 16 F 120 F and displayed as Lo for less than 15 F and as HI for more than 121 F If the ambient temperature sensor fails it is displayed as Er 3 Since display temperature of outside temperature is temperature sensed by the ambient sensor in the hinge U of the refrigerator room it may differ from the outside temperature display of other household electrical appliances 12 FUNCTION 2 1 3 Lock function dispenser and display button lock 1 In power application of refrigerator the LOCK text is turned off at the right side of lock graphic of display with the lock replease status 2 If desiring to lock the dislay the dispenser and control panel push on the LOCK button more than 3 seconds LOCK text is turned on at the right side of lock graphic of display with lock status 3 The buzzer sound and control panel and dispenser function is not performed even if pressing display button other than lock key in the lock status 4 If desiring to release the lock status and pressing the lock button more than 3 seconds LOCK text is turned off at the right side of lock graphic of display with the lock release status LOCK CONTROL a 2 1 4 Filter condition display
12. During rest time After work Caps are missed Residual moisture Not dried in the compressor Elapsed more than 6 months after drying Caps missed No pressure when it is open Insufficient drier Dry drier Drier temperature poweron capacity Leaveitinthe air Checkon package thermo condition stat Good storage after finishing in pipes During work Air blowing Not performed Performed Too short Low air pressure L Less dry air Moisture penetration Leave it in the air Moisture penetration into the refrigeration oil Short pipe insert Pipegaps Too large Damaged pipes Too much solder The capillary tube inserted depth Too much Drier clogging Capillary tube melts Over heat Clogged with foreign materials Desiccant powder Weld oxides Drier angle Reduced cross section by cutting Squeezed Compressor cap is disconnected Foreign material clogging materials are in the pipe Residual moisture Caps are missed During transportation E Heat a clogged evaporator to check it As soon as the cracking sound starts the evaporator will begin to freeze The evaporator does not cool from the beginning no evidence of moisture attached The evaporator is the same as before even heat is applied 51 TROUBLE DIAGNOSIS CLAIMS CAUSES AN
13. 14 R61 __ 38 R62 In 35 5 pega 2 ie 21 42 R63 K 1 7 718 15 8 77 100uF R66 25 36 4 7K Foward 5 10 7 9 p37 40 Reverse6 R67 681 2 m BA6222 223 100V IC 28 1 _9 1 223 T erea 223 T MICOM Ea 47 ICE MAKER SENSOR ICE MAKER STOP S W ICE MAKER TEST S W ICE MAKER MOTOR ICE MAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR The above ice maker circuits are applied to LSC27926 and composed of ice maker unit in the freezer and ice maker driving part of main PWB Water is supplied to the ice maker cube mould through the solenoid relay for ice valve of solenoid valve in the machine room by opening valve for the set time Water supply automatically stops when water supply time is elapsed This circuit is to realize the functions such as ice ejection of ice maker cube mould ice full detection leveling ice making temperature detection etc Refer to the temperature detecting circuits of Main PWB for ice making temperature detection Ice maker test switch input detection is the same as the door switch input detection circuit of main PWB 1 It is to force to operate during operation test service and cleaning The test switch is mounted under the automatic ice maker The test function starts when the test switch is pressed for more than 0 5 second 2 Test button does not work during ice ejection and water su
14. Cover Sensor 3 Note When the ice tray is not horizontal after assembly assembly must be wrong Check and assemble again 91 HOW DISASSEMBLE AND ASSEMBLE 5 DISPENSER 4 Loosen four screws with a phillips screwdriver and pull 1 Disconnect funnel and button assembly by pulling down thefunnel Assembly and forward Funnel Assembly Button 5 The Duct Cap Assembly can be disconnected if the hold 2 Remove display frame Assembly by making a gap lever connecting screw is loosened with a phillips driver between a display frame Assembly and Door with a balde screwdriver and pulling it forward The cover dispenser is attached with a hook Solenoid Assembly Holder Q Lever Cap Assembly Duct 6 To install the Duct Cap Assembly insert one end of the spring into the right hole of the dispenser lever and insert the other end into the right hole in the top part of 3 The Display Assembly can be connected by pressing dispenser Then attach the holder at the solenoid the top of the dispenser cover and pushing it after switch separating the Display Frame from its housing Sheet Heater Dispenser Lever 92 HOW DISASSEMBLE AND ASSEMBLE 7 Dispenser Related Parts FRAME ASSEMBLY DISPLAY COVER DISPENSER DECO FRAME DISPLAY PWB PCB ASSEMBLY DISPLAY BUTTON ASSEMBLY BUTTON DECO FUNNEL ASSEMBLY MICRO SWITCH
15. cde test mode 2 or PRESS p FAN DAMPER MOTOR temperature of a S Once ON CLOSE frost removal d sensor is more than 5 C it o immediately Test mode 2 returns to the test m Compulsory frost TEST COMP 0 3 F FAN 0 3 FROST 0 3 R STEP ber tzi SWITCH 5 amp 5 REMOVAL ee motor Mode for initial yee PRESS ope HEATER DAMPER Operation 2 Times OFF ON CLOSE COMP operates after 7 minutes 18 CAUTION MICOM FAILURE DIAGNOSIS TABLE 1 DEFECT FAILURE CODE IS INDICATED ON THE REFRIGERATOR AND FREEZER DISPLAY THE OTHER FUNCTION OF DISPLAY IS TURNED OFF 2 AFTER ANY TEST MODE OR SERVICE DIAGNOSTIC BE SURE TO RESET BY UNPLUGGING AND THEN PLUGGING IN THE APPLIANCE 1 FAILURE DIAGNOSIS FUNCTION FAILURE CODE ROOM TEMP 00005 6 00000 F Fe WC MG HOLD 3SECS del 26 E 4 4 MONTH 2 PROPER OPERATION FAILURE CODE PART CONTENTS PRODUCT OPERATION STATUS IN FAILURE No FREEZER ROOM REFRIGERATOR ROOM STEPPING NOTCH TEMPERATURE NOTCH TEMPERATURE OF FAILURE COMPRESSOR FREEZING COOLING DEFROST MOTOR DISPLAY DISPLAY BLDC MOTOR BL
16. Check DC power 5V 12V Failed ice making sensor Check the resistance of both ends 1 2 of ice making sensor of CON9 Defects between ice making sensor and board Pin No 60 of IC1 Failed Ice Maker Unit Is the resistance of both ends 9 10 of ice ejection motor of between 18 and 22 Q 15 ice ejection motor drive circuit IC11 and peripheral circuits normal Defects between Hall IC and Board Pin No 42 of IC1 Confirm ice ejection and level return when pressing test switch Normal Failed ice maker unit test switch Are both ends 5 6 of CON9 test switch open Defects between test switch and board Pin No 38 of IC1 Are both ends 3 4 of CON9 ice maker stop switch short Poor water supply ls power applied to water supply valve Does the water supply valve work normally 15 the water supply line normally connected 46 Change main PWB Replace Ice making Sensor Replace Ice Maker Unit Replace Main PWB Replace Ice maker Unit Replace water supply valve ICE MAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR 4 Ice Maker Circuits 7 cone P64 60 1 AA MUA 23 2K 2 14 10uF e m R59 ZOIN p4ol41 R60 2K 3 bei gt
17. DEMO stops if pressing the button during DISPLAY DEMO DEMO stops and the display normally operates but performs DEMO operation again if not pressing the button again for more than 30 seconds DEMO Display scenario when using the display Release method is same as input method The mode is released if power is reset 11 MICOM FUNCTION 2 Description of Function 2 1 1 Function of Temperature Selection Division Power Initially On ist Press 2st Press 3th Press 4th Press 5 5 5 5 5 Setting 4 4 4 4 4 temperature 3 3 M x 2 2 2 2 2 1 1 1 1 1 Medium Medium Max Max Min Medium Min Control Freezer Control 2 F 5 F 8 F 7 F 1 F 37 F F 32 F 46 F 41 F Control The temperature can vary 3 C depending on the load condition Whenever pressing button setting is repeated in the order of Medium gt Medium Max gt gt Min Medium Min The actual inner temperature varies depending on the food status as the indicated setting temperature is a target temperature not actual temperature within refrigerator Refrigeration function is weak in the initial time Please adjust temperature as above after using refrigerator for minimum 2 3 days Freezer Notch is fixed Medium Max unconcerned with display Notch during ICE Making Control Mode and Ice Maker Stop switch is selected with 2 1 2 Outside temperature display function
18. If pressing ICE PLUS button during frost removal the ICE PLUS LCD or LED is turned on but if pressing the ICE PLUS compressor operates after the remaining time has passed If selection ICE PLUS within 7 minutes delay for 7 minutes of compressor after the compressor stops compressor operates after the remaining time has passed 10 The freezing room fan motor operates at the high speed of RPM during operation of ICE PLUS 335 MICOM FUNCTION 2 8 Control of variable type of freezing fan 1 To increase cooling speed and load response speed MICOM variably controls freezing room fan motor at the high speed of RPM and standard RPM 2 MICOM only operates in the input of initial power or ICE PLUS operation or load response operation for the high speed of RPM and operates in the standard RPM in other general operation 3 If opening doors of freezing cold storage room or home bar while fan motor in the freezing room operates the freezing room fan motor normally operates If being operated in the high speed of RPM it converts operation to the standard RPM However if opening doors of freezing room or home bar the freezing room fan motor stops 4 As for monitoring of BLDC fan motor error in the freezing room MICOM immediately stops the fan motor by determining that the BLDC fan motor is locked or poor if there would be position signal for more than 115 seconds at the BLDC motor Then it displays failure refer to failure diagnosi
19. KEC 1102 8 08 00 IC STANDARD LOGIC KIA7042AF KEC SOT 89 TP RESET IC KEC 1103 1 9 0IRH934600D IC ROHM BR9SLC46RF W 8PIN SOP BK EEPROM ROHM HEIN 1 10 0IKE6578308 IC STANDARD LOGIC KID65783AF 20PIN SOP TRAY TR ARRAY BUFFER KEC 1201 2 11 oIKE650030C IC STANDARD LOGIC KID65003AF 165 BK 7CH DRIVER KEC 1C202 203 1 12 OISTLKEOO4A IC STANDARD LOGIC KRA106S 507 23 TP TRANSISTOR KEC 0102 3 13 08 005 IC STANDARD LOGIC KRC106S KEC SOT 23 TP TRANSISTOR KEC 0101 0103 0104 16212 RESONATOR CERAMIC CSTLS4M00G53 A0 MURATA 4 00MHZ 0 5 TA 15PF 3 MURATA OSC101 1 15 0 107 6 CAPACITOR FIXED ELECTROLYTIC 100UF MV 16V 20 RITP SMD SMD RUBYCON G LUXON 101 16 0CE476VH6DC CAPACITOR FIXED ELECTROLYTIC 47UF 25V 20 RITP SMD SMD RUBYCON G LUXON CE102 7 OCK104DK94A CAPACITOR FIXED CERAMIC HIGH 100 2012 50V 80 20 RITP F YSV MURATA CC101 107 6 18 0CK223DK96A CAPACITOR FIXED CERAMIC HIGH 22 2012 50V 80 20 RITP X7R MURATA 301 306 19 0RJ2400H680 RESISTOR METAL GLAZED CHIP 240 OHM 1 2 W 5 5025 RITP ROHM R201 209 1 20 08 800 680 RESISTOR METAL GLAZED CHIP 180 OHM 1 2 W 5 5025 RITP ROHM R212 2 1 0RJ1001E672 RESISTOR METAL GLAZED CHIP OHM 1 8 W 5 2012 ROHM R102 R110 1 22 10802001 672 RESISTOR METAL GLAZED CHIP 2K OHM 1 8 W 5 2012 ROHM R101 16 23 0RJ4701E672 RESISTOR METAL GLAZED CHIP 4 7K OHM 1 8 W 5 2012 RITP ROHM R103 R1
20. OHM 1 4 W 5007 TAS SMART CHOHYANG R6 63 0RW0101J609 RESISTUR FIXED POWER COATED WIRE VDUNDI OHM 1 V 5 TAS SMART CHDHYANG BIE 64 ORDI801G609 RESISTOR FIXED CARBON FILM 1 8K OHM 1 4 V 5 00 TAS SMART CHOHYANG R8 65 08010016609 RESISTOR FIXED CARBON FILM IK OHM 1 4 W 5 TAS SMART CHDHYANG KO 66 08556006614 IRESISTOR FIXED METAL OXIDE FILM 56 OHM W 5 00 F20 SMART CHOHYANG RIO 36 EXPLANATION FOR MICOM CIRCUIT P NO DESCRIPTIO SPEC MAKER REMARK 67 0800682 609 RESISTIR FIXED CARBON FILM 68 DHM 1 2 W 5 00 TAS2 SMART CHDHYANG R67 68 08010006609 RESISTOR FIXED CARBON FILM 100 OHM 1 4 V 57 TAS SMART CHOHYANG 69 08010026609 RESISTIR FIXED CARBON FILM 10 OHM 1 4 5 TAS SMART CHOHYANG _ R12 39 99 57 70 08147010609 RESIS
21. Original point 2 1 sec Horizontal Level Retrun Conditions Conditions 44 ICE MAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR 2 5 Test Function 1 It is to force the operation during operation test service and cleaning The test switch is mounted under the automatic ice maker The test function starts when the test switch is pressed for more than 0 5 second 2 Test button does not work during ice ejection and water supply It works when it is in the horizontal conditions If mould is full of ice during test function operation ice ejection control and water supply control do not work 3 When test switch is pressed for more than 0 5 second in the horizontal conditions ice ejection starts irrespect of the mould conditions Water shall be splashed if test switch is pressed before the water in the mould freezes Water shall be supplied while the mould returns to the horizontal conditions after ice ejection Therefore the problems of ice ejection returning to the horizontal conditions and water supply can be checked by test switch When test function performs normally buzzer sounds and water supply shall carry out Check it for repair if buzzer does not sound 4 When water supply is completed the cycle operates normally as follows Ice making gt Ice ejection gt Returning to horizontal conditions Water supply 5 Remove ice from the ice maker cube mould and press test switch when ice maker cube mould is full of ice
22. _0 22102510 CAPACITOR FIXED CERAMICCHIGH DIELECTRIC 220 2KV K B S SAW WHA DOOSAN CC 48 OCK224DK94A CAPACITUR FIXED CERAMICCHIGH DIELECTRIC GGI 2012 50V 80 20 F YSV R TP MURATA 49 OCKI04DK94A CAPACITOR FIXED CERAMICCHIGH DIELECTRIC JN 2012 50 80 20 R TP FCYSV MURATA CC4 6 8 9 11 50 OCK223DK96A CAPACITUR FIXED CERAMICCHIGH DIELECTRIC ZN 2012 50 80 20 R TP X7R MURATA CC7 10 12 16 18 c0 28 51 0CK2230K949 CAPACITUR FIXED CERAMICCHIGH DIELECTRIC ZON 50V Z TAS TAE YANG CC29 52 OCKIOCDK9GA CAPACITIR FIXED CERAMICCHIGH DIELECTRIC INF 2012 50V 80 20 X7R MURATA 17 19 53 00000418670 CAPACITOR FIXED FILM GUE D 275V 20 R PILKOR CM2 54 0CF33408670 CAPACITOR FIXED FILM 330NF 0 275V 20 BULK M PP NI PILKOR 55 02047307497 FILM 47000 630V J M PE NI R SEIL CM3 56 00000318409 ICAPACITOR FIXED FILM UF D 100V J PE TP SAWWHA CM4 57 0RW3303J609 RESISTIR FIXED POWER COATED WIRE WDUND 330K OHM 1 W 57 TAS2 SMART CHOHYANG 58 08756038609 CARBON FILM 560 OHM 1 2 W 5 TAS SMART CHOHYANG 59 08556006601 RESISTUR FIXED METAL OXIDE FILM DOK OHM W 5 00 Fe SMART CHOHYANG KO 60 08068010609 RESISTUR FIXED CARBON FILM 6 8K OHM 1 4 W 5 00 SMART CHOHYANG 4 61 08108220600 RESISTOR FIXED CARBON FILM 82 DHM 1 4 W 5 00 TAS SMART RS 62 080680000 RESISTIR FIXED CARBON FILM 680
23. door switch switch with a tester rings or door Defective door switch parts Refer to door switch in parts repair Replace door switch opening alarm guide does not work Defective Buzzer does Key input wire is cut or bad connector Check input wire with a tester Reconnect lead Refer to display dis play button not sound and buttons do not operate terminal contact in main PCB and display PCB connecting lead wire wire and replace or directly connect bad contact terminal to lead wire circuit in circuit explanation Key is continuously depressed due to structural interference Disassemble frame display and confirm vis ually Adjust or replace interfering structures SISONDVIC 9 Problems Symptom Causes Checks Measures Remarks Defective display button Buzzer does not sound and buttons do not operate Trouble mode indication Check trouble diagnosis function Repair troubles Refer to mode indication in function explanations Door Buzzer Buzzer continuously rings or door opening alarm does not work Defective connecting lead wire from main PCB to door switch Check lead wire associated with door switch Repair lead wire Defective freezer compartment door switch parts Refer to door switch in parts repair guide Replace Freezer compartment door switch Bad water ic
24. fallen Foreign materials in the compressor compartment m OLP sound Chattering sound Insulation paper vibration Capacitor noise 7 Pipe contacts each other Narrow interval Pipe sound No vibration damper amping Bushing Q Damping Bushing S Capillary tube unattached 56 TROUBLE DIAGNOSIS CLAIMS CAUSES AND CHECK POINTS HOW TO CHECK 7 Sounds 1 Compressor compartment operating sounds Transformer sound Its own fault Core gap Bad connection Correct screw connection Drip tray vibration sound assembly Distortion Foreign materials inside Back cover machine sound T Bad connection Partly damaged L Condenser drain sound Notconnected Bad pipe caulking 2 Freezer compartment sounds Fan motor sound Normal operating sound Vibration sound Aged rubber seat Badtorque for assembling motor bracket Sounds from fan Fan guide contact contact Shroud burr contact Damping evaporator contact Residual frost contact TL Damaged heater cord Narrow evaporator interval Unbalance fan sounds Unbalance Surface machining conditions r Fan distortion Misshappen Ice on the fan Air intake opposite to motor bushing assembly Motor shaft
25. fan Cooling Fan and step motor damper are sequentially operated as follows for preventing noise and part damage occurred due to simultaneous operation of a lot of parts in applying initial power and completing test Function Load Operation Sequence Remark When temperature If error occurs of a frost removal POWER COMP F FAN R STEP 03 OPTICHILL during operation sensor becomes MOTOR sec ede initial operation is more than 45 C ON C FAN DAMPER MOTOR not done In purchase ON ON ON movement 5 w When Sequence of 0 3 FROST FROST 60 DAMPER 03 DAMPER a ge a POWER sec REMOVAL sec REMOVAL sec amp sec amp load operation Nr gt HEATER HEATER gt DUCTDOOR gt DUCTDOOR when closing Sensor becomes ON amp OPTICHILL amp OPTICHILL F room and less than 45 C ON OFF HEATER ON HEATER OFF In power failure 2 service E 03 PIPE PIPE 03 03 0 3 OPTICHILL amp sec amp COMP FFAN coc R STEP sec STEP gt DISP DISP amp gt MOTOR DAMPER HEATER HEATER ON DAMPER MOTOR ON OFF ON ON ON Test mode 1 If pressing switch Compulso TEST OTHER FAN 0 3 R STEP 0 3 once more in the ge SWITCH LOAD GENE sec MOTOR sec
26. from the function adjustment part and then pressing the press switch 22 EXPLANATION FOR MICOM CIRCUIT 1 Explanation for PWB circuit 1 1 Power circuit The power Circuit includes a Switched Mode Power Supply 5 5 It consists of a rectifier BD1 and converting to DC a switch IC2 switching the DC voltage a transformer and a feedback circuit IC3 and IC4 Caution Since high voltage 160 Vdc is maintained at the power terminal wait at least 3 minutes after unplugging the appliance to check the voltages to allow the current to dissipate Voltage of every part is as follows Part 2 4 5 Voltage 120 Vac 160 14 Vdc 12 15 5 5 D3SBA60 R2 TUR die Po 15mH 2 1 275 RI 39K IN FUSE2 5 250 5 VDD Varef k STR E 66351 cer m 7805 a b Vss HE Vass T N M4 MM Cc E cos 3 104 104 FUSE 4 25011 TAB 2 TOSHIBA TMP87C841N IC1 A 23 1 3 Reset circuit The RESET circuit allows various parts of the MICOM such as RAM defrosting etc to be restarted from the initial sta
27. gas atmosphere N2 gas pressure 0 1 0 2kg cm 2 Repair in a clean and dry place Pipe Cutter Gas welder N2 gas Evacuate for more than forty minutes after connecting manifold gauge hose and vacuum pump to high drier and low compressor refrigerant discharging parts pressure sides Evacuation Speed 113 liters minute Vacuum pump R134a exclusively Manifold gauge Refrigerant charging charging inlet welding Weigh and control the allowance of R134a charging canister in a vacuum conditions to be 5 g with electronic scales and charge through compressor inlet Charge while compressor operates Weld carefully after pinching off the inlet pipe R134a exclusive charging canister mass cylinder refrigerant R134a manifold gauge electronic scales pinch off plier gas welding machine Check refrigerant leak and cooling capacity Check leak at weld joints Minute leak Use electronic leak detector L Big leak Check visually Note Do not use soapy water for check Check cooling capacity Check radiator manually to see if warm Q Check hot line pipe manually to see if warm Check frost formation on the whole surface of the evaporator Electronic Leak Detector Driver Ruler Compressor compartment and tools arrangement Remove flux from the silver weld joints with soft brush or wet rag Flux may be the cause of corrosion and leaks Clean R134a exclusive
28. hole to check 2 Put hot water into the drain check drains outside 1 Push out impurities by inserting copper wire Turn off more than 3 hours and pour in hot water if frost is severe 2 Put in hot water to melt down frost 3 Check the water outlet 4 Push the heater plate to suction duct manually and assemble the disconnected parts Gap between Suction duct and Heater plate Ice in the gap 1 Confirm in the Suction duct 1 Turn off the power confirm impurities and ice in the gap and supply hot water until the ice in the gap melts down 2 Push the Heater plate to drain bottom with hand and assemble the disconnected parts Wrong heater rating or wrong assembly 1 Check heater label 2 Confirm the capacity after substituting the resistance value into the formula p _V V Rated voltage of user country LZ Resistance of tester 0 Compare P and lavel capacity Tolerance 7 Faults replace How to replace Refer to main parts SISONDVIC F1INOAL 60 Problems Causes Checks Measures Remarks No defrosting Melting fuse blows 1 Lead wire is cut 2 Bad soldering Check melting fuse with tester OK If Q wire is cut Faullty parts parts replacement Check wire color when maeasuring resistance with a tester Ice in the Suction duct 1 Icing by foreign materials in the duct 2 Icing by cool
29. not warm and the frost forms partly on the evaporator in the freezer compartment Replace the compressor weld evacuate and recharge refrigerant Drier must be replaced Faulty cooling fan in the compressor compartment Check sequence 1 Check cooling fan operation 2 Check that cooling fan is disconnected from the motor Replace if motor does not operate If fan is disconnected check fan damage and reassemble it E Refer to fan motor disassembly and assembly sequence 5 F1IINOAL 9 2 5 Defrosting failure Problems Causes Checks Measures Remarks No defrosting Heater does not generate heat as the heating wire is cut or the circuit is shorted 1 Heating wire is damaged when inserting into the evaporator 2 Lead wire of heater is cut 3 Heating wire at lead wire contacts is cut 1 Check the resistance of heater 0 Short Q Cut Tens to thousands Q OK 2 Check the resistance between housing terminal and heater surface 0 Q Short Q Cut Tens to thousands Q Short Heating wire is short and wire is cut e Parts replacement Refer to parts explanations Seal the lead wire with insulation tape and heat shrink tube if the cut lead wire is accessible to repair Suction tube and discharge orifice 1 Impurities 2 Ice 1 Confirm foreign materials In case of ice insert the copper line through the
30. stand it upright for 6 hours before plugging it in This allows the refrigerant oils to return to the sump in the compressor If you operate the refrigerator before the oil has had a chance to settle you could damage the compressor Door does not open properly The front side should be a little bit higher than the rear side Refrigerator compartment door does not open properly When the door is open warm open air comes into the compartment and is mixed up with cool air This mixed air shall be compressed and increase the internal pressure when door is closed This causes the door sticked closely to the refrigerator in a moment If the refrigerator is used for a long time it will open smoothly E When the refrigerator compartment door is opened and closed the freezer compartment door moves up and down When the refrigerator compartment door is opened and closed fresh air comes into the freezer compartment and moves up and down the freezer compartment door Door opens too easily There is a magnet in the gasket so it closes securely without a gap It can be held open easily if something is in the way and obstructs the door s closing door does not close properly If the refrigerator is not properly leveled the doors will not close easily Adjust the level using the leveling screws under the front of the refrigerator 88 HOW DISASSEMBLE AND ASSEMBLE
31. t turn the filter from side to side it isn t fully inserted Push it in firmly and twist it into place You will hear the snap when it clicks into place Using the handle twist the cartridge clockwise about 1 4 turn 3 Flush the Water System After Replacing Filter Dispense water through the water dispenser for 3 minutes to purge the system There may be a little air in the line causing noise or hissing Run the water at the dispenser until the hissing stops to purge the air from the system NOTE To purchase replacement water filter cartridges visit your local appliance dealer or part distributor You can also visit our website www lgappliances com or call 1 877 714 7481 HOW INSTALL REFRIGERATOR 3 How to Control the Amount of Water Supplied to Icemaker 3 1 Confirm the amount of water supplied to the icemaker 1 Pull out the ice bin shelf in the upper part of the freezer compartment Caution Do not put hands or tools into the chute to confirm the operation of geared motor It may damage the refrigerator or hurt your hands 2 Apply electricity after connecting water pipe 1 Press test switch under the icemaker for two seconds as shown below 2 The bell rings ding dong and ice tray rotates and water comes out from the icemaker water tube 3 The water shall be supplied two or three times into the tray The amount of water supplied for each time is small Put a water container under t
32. the keeper nut counterclockwise to tighten Caution Don not force too hard to level the height The hinge pin can be pulled out Adjustable range of height Maximum of 1 2 2 If the freezer door is higher than the refrigerator door Insert a driver 2 into the groove 1 if the adjusting screw and turn in the direction of the arrow clockwise until the refrigerator is level Keeper nut Tool for adjustment Adjustment BN Down amp HOW INSTALL REFRIGERATOR 2 Filter Replace the filter when the indicator light comes on or the performance of the icemker or water dispenser decreases noticeably 2 After changing the water filter cartridge reset the water filter status display and indicator light by pressing and holding the BUTTON for 3 seconds page 18 1 Remove the old cartridge Twist the knob of the cartridge counter clockwise 2 When the cartridge is removed you will feel it click Pull out the cartridge 7 NOTE There will be some water 25cc in the filter cartridge Some spilling may occur Catch it in a bowl or towel 2 Replace with a new cartridge Take the new cartridge out of its packaging and remove protective cover from the o rings With cartridge knob in the vertical position push the new filter cartridge into the cover until it stops x If you can
33. 016609 RESISTIR FIXED CARBON FILM eK OHM 1 4 V 57 TAS SMART CHOHYANG R72 120 ORN2612G409 RESISTOR FIXED METAL FILM 26 1K OHM 1 4 1 00 TAS2 SMART CHOHYANG 121 OTRIOG009AC TRANSISTUR BIPDILARS KRALOGM KRA2206 92 50 100MA KEC 06 8 EZ 68548500014 JUMP WIRE 0 6MM TAPING SN DAE LEAD 3235 38 XINTERFACE PORT gt 123 6630JB8007C CONNECTOR CIRC WAFER 917782 1 4P 2 5MM STRAIGHT SN AMP UNI 104 08047006609 RESISTDR FIXED CARBON FILM 470 DHM 1 4 W 5 IGO SMART CHOHYANG R73 105 0RH4701L622 RESISTOR METAL GLAZED CHIP 4 7K DHM 1 8 W 5 2012 R TP ROHM R74 126 OCK102DK96A CAPACITOR FIXED CERAMICCHIGH DIELECTRIC INF 2010 50 80 20 R TP MURATA C032 EI 68548500014 JIM WIRE 0 6 TP TAPING SN DAE A LEAD 16 17 42 2375 WORK 5 8 8 S E 5 lt No PINO DESCRIPTION SPEC MAKER REMARK 1 2 EAX35934501 PWB FR 4 Pb Free 1 3 MFT36966801 NAME PLATE 07 NEW CHD DISPLAY 10 REFLECTOR NOLYL 1 5 8630 88005 WAFER SMAW250 04 YEON HO CON101 1 6 36041101 IC DRAWING TMPB6CM27FG 80 TRAY 07 NEW CHD TOSHIBA Ic101 1 7 IC STANDARD LOGIC KIA78LO5F 3PIN SOT 89 RITP 5V 150MA REGULATOR
34. 04 R106 109 R213 216 R301 306 1 24 0RJ1004E672 RESISTOR METAL GLAZED CHIP 1M OHM 1 8 W 5 2012 RITP ROHM R105 2 25 0RJ1200H680 RESISTOR METAL GLAZED CHIP 120 OHM 1 2 W 5 5025 ROHM R210 R211 2 26 08006826676 RESISTOR METAL GLAZED CHIP 68 OHM 1 4 W 5 3216 RITP ROHM R217 R218 1 7 0RJ2200E672 RESISTOR METAL GLAZED CHIP 220 OHM 1 8 W 5 2012 RITP ROHM R111 1 28 0DZRMO0188A DIODE ZENERS RLZ ROHM RITP LLDS LL 34 500MW 5 6 20 ROHM 20101 29 6908 88003 BUZZER BM 20B BUJEON PIEZO 4KHZ 85DB BUJEON BUZZER 93 30 0DLERO108AA LED 19 213 G6C AN1P2B 3T N1 N2 Rank EVERIGHT LD201 293 6600RRTO02J JPT1138A JEIL 12VDC 50MA SMD JEIL SW301 306 6 SWITCH TACT 6600RRTOOSA 5 1105 KYUINGIN LFM 48W TM TS PB FREE HEESUNG METAL HEESUNG pus bo CREAM SNAGCU SN 3 0AG 0 5CU Pg 82 550000008 SOLDER SR 34 PB FREE LFM 48 HEESUNG 38 EXPLANATION FOR MICOM CIRCUIT CON101 5 4 vart mt Hey cet 400 IKE 1 TF m L LE D ME PRE 2 1_ vss SO rest 3 m Ed EEI B B B 2 IE EE JB 8 2 transfer AX
35. 1 DOOR 3 Disconnect upper hinge 7 from the hinge supporter by grasping the front part of upper hinge and lifting up 1 Remove lower cover and then disconnect water Hinge Assembly U in arrow direction A and pull forward in arrow B direction Be careful because the door may fall damaging the door the floor or injuring you supply tube in the lower part of freezer door Pull the water supply tube 2 forward while pressing on the coupling 1 as shown in the drawing u Disconnecting the tube under the door causes about 1 5 litters water to flow out Please put up a big Giza 4 Lift up the freezer door 1 arrow direction and disconnect the door from the lower hinge 2 Don t pull the door forward 2 Remove a freezer door 1 Loosen hinge cover screw of freezer door and remove cover Disconnect all connecting lines except grounding cord Line Earthing Cord Note Lift up the freezer door until a water supply tube is fully taken out 2 Turn hinge lever arrow direction until it is loosened and take it out in arrow B direction 5 Assembly is the reverse order of disassembly Hinge Lever Note When disconnecting refrigerator door turn hinge lever counterclockwise If the hinge or bracket are bent during assembly use two extra screws Tap Tite M6 Left Hinge attaching screw in the holes of the upper hinge 89 HOW DISASSEMBLE AND ASSEMBLE 2
36. 2 2 5 C 3 C 8 2k Q 3 6 F 2 7 F 1 8 F DO F 0 9 F 1 8 F 2 7 F 3 6 F 145 F 5 4 F Refrigerator Down Down Down Drop change Up Up Up Up Up Up RCR1 2 5 C 2 C 11 5 C 1 C 0 5 C No 0 5 C 1 C 115 C 2 C 25 C 10kQ 4 5 F 3 6 F 12 7 F 1 8 F DO F 0 9 F 1 8 F 2 7 F 3 6 F 145 F Down Down Down Down Down change Up Up Up Up Up 3 C 125 C 2 C 1 5 1 05 C 0 5 C 1 C 11 5 C 2 12kQ 5 4 F 45 F 3 6 F 27 F 1 8 F 0 9 F 0 9 F 1 8 F 2 7 F 3 6 F Down Down Down Down Down Down change Up Up Up Up 35 C 3 C 42 5 C 2 15 C 1 C 0 5 C No 0 5 C 1 C 1 3 C 18kQ 6 3 F 5 4 F 145 F 3 6 F 2 7 F 1 8 F 0 9 F 0 9 F 1 8 F 2 7 F Down Down Down Down Down Down Down change Up Up Up 4 C 35 C 3 C 2 5 C 2 C 15 C 1 OA C No 0 5 C 1 C 33kQ 7 2 F 6 3 F 154 F 145 F 3 6 F 2 7 F DS F 0 9 F 0 9 F 1 8 F Down Down Down Down Down Down Down Down change Up Up 45 C 4 C 3 5 C 3 C 2 5 C 2 C 15 C 1 C 105 C No 0 5 C 56kQ 8 1 F 7 2 F 6 3 F 154 F 4 5 F 3 6 F 2 7 F 1 8 F 0 9 F 0 9 F Down Down Down Down Down Down Down Down Down change Up 5 C 45 4 C 3 5 C 3 C 25 C 2 C 1 5 C 1 0 5 C No 180kQ 9 F 81 F 7 2 F
37. 6 223 8 77 R43 P51 50 Be SEO C FAN LOCK 9 17 R44 zB 4 7K R45 12 P53 52 3 9K F FAN PWM 1 R46X 10K 11 R49 R50 P50 49 2K 4 7K 10 19 I 102 30 EXPLANATION FOR MICOM CIRCUIT gt Temperature compensation table at the refrigerator is as follows Modification ist 470 2 56kO 2 IKO 12kQ 18kQ 56 180KQ resistance No 0 5 C 1 C 1 5 C 2 C 25 C 3 C 3 5 C 4 C 45 C 5 C 4709 0 9 F 1 8 F 2 7 F 3 6 F 4 5 F 5 4 F 6 3 F 7 2 F 8 1 F 9 F change Up Up Up Up Up Up Up Up Up Up 0 5 C No 0 5 C 1 C 15 C 2 C 25 C 3 C 3 5 C 4 4 5 C 2kQ 0 9 F 0 9 F 1 8 F 2 7 F 3 6 F 45 F 154 F 6 3 F 7 2 F 8 1 F Down change Up Up Up Up Up Up Up Up Up 1 C 0 5 C No 0 5 C 1 1 5 C 2 C 2 5 C 3 C 3 5 C 4 C 3 3kQ 1 8 F 0 9 F 0 9 F IS F 2 7 F 3 6 F 145 F 5 4 F 6 3 F 7 2 F Down Down change Up Up Up Up Up Up Up Up 15 C 1 C 10 5 C No 0 5 C 1 C 1 5 C 2 C 2 5 C 3 C 3 5 C 5 6 2 7 F 1 8 F 0 9 F 0 9 F 1 8 F 2 7 F 3 6 F 45 F 5 4 F 6 3 F Down Down Down change Up Up Up Up Up Up Up 2 C 115 C 1 C 0 5 No 0 5 C 1 C 115
38. 6 1KF AIN2 ceni de 2 RI SENSOR 223 RR2 10UF 63 59 d 54 26 1KF 50V 7 AIN3 EES K 2 R2 SENSOR 223 1047 p 50V RW1 __ CONS P64 60 A 10KF 1 AIN4 cb E evo 223 C 1 m 50V d 2 RTI CONS 67 63 R32 10KF ZE cola CE RT SENSOR 223 10uF d 50V d 8 1 6 Switch entry circuit The following circuits are sensing signal form the test switch damper motor reed switch for testing and diagnosing the refrigerator R28 47 4 7K sw P46 CC10 L A 23 T MICOM 27 EXPLANATION FOR MICOM CIRCUIT 1 7 Option designation circuit model separation function EE 37 34 56 P33 The circuits shown above vary according to which features are included on your particular model These circuits are preset at the factory and cannot be altered NOTE The chart makes absolutely no sense You have Optichill no matter which way the connection is set Separation Connection Status Application Standard Connection OptiC hill exist 1 OUT OptiChill don t exist 1 8 Stepping motor operation circuit R49 R50 33 10K 10K saad 34 iu 10 12 15 9 A 14 10 A STEPPING MOTOR 8 11 11 6 4 5 7 10 ha B 351243 Ge 12 7774 13 226 EXPLANATION FOR MICOM CIRCUIT T
39. 6 3 F 5 4 F 145 F 3 6 F 2 7 F 1 8 F DO F Down Down Down Down Down Down Down Down Down Down change gt Temperature compensation at the freezer is performed the same as at the refrigerator The value for the freezer is twice that of the refrigerator This circuit enters the necessary level of temperature compensation for adjusting the appliance The method is the same for every model in this appliance family 3i EXPLANATION FOR MICOM CIRCUIT 2 Compensation circuit for temperature at freezer R18 10K R19 10K R20 10K R21 10K R22 10K R23 10K JCR1 P70 AIN10 MICOM Temperature compensation in CUT JCR1 1 C 1 8 F 2 43 6 F JCR2 1 C 41 8 F JCR3 1 C 1 8 F 2 C 3 6 F JCR4 1 C 1 8 F Compensation for weak cold Compensation for over cold Temperature compensation value at refrigerator Remarks JCR3 JCR4 1 JCR2 6 0 C In shipment from factory CUT 5 5 1 1 8 F 6 CUT 5 1 1 8 F 99 CUT 6 1 C 1 8 F 6 5 1 C 1 8 F CUT CUT 5 2 3 6 F 64 CUT CUT 2 C 43 6 F CUT CUT 0 0 F CUT 5 ETA 0 0 F 5 0 C O F o CUT 66 0 C O F CU
40. AGNOSIS iic rre NE asnan 54 TROUBLESHOOTING cece ee san dao E dera a erh ee 54 EAULTS aa SO Intende O 64 COOLING CYCLE HEAVY REPAIR eb bee eene 81 HOW TO DEAL WITH CLAIMS atere Ea oet pe ER pred aaa ire Re 88 HOW DISASSEMBLE AND ASSEMBLE uusuusnussnsannunnsannunnzunnunnsunnsunnunnnunsnnnnansnnnnnnnnnnnnnnnnnnunnunnnnnnunnnunnnunnnnnnunnnannnnnnnn 93 DOOR iu eei idea E 93 uz biam A H 94 FAN SHROUD GRILDE rettet ro t tb dup RE bo ede 95 eT 95 DISPENSER oeconomia tiet 96 EXPLODED VIEW amp REPLACEMENT PARTS UE Tasmanian CRGO ssh savadsnndunaniseesdntaseian 98 WARNINGS AND PRECAUTIONS FOR SAFETY Please observe the following safety precautions to use the refrigerator safely and correctly and to prevent accident or injury when servicing Be careful of an electric shock Disconnect power cord from wall outlet and wait for more than three minutes before replacing PWB parts Shut off the power whenever replacing and repairing electric components 2 When connecting power cord please wait for more than five minutes after power cord was disconnected from the wall outlet 3 Please check if the power plug is pressed by the refrigerat
41. ATED IN ABNORMAL AMBIENT SENSOR AND Er INDICATED ON THE AMBIENT TEMPERATURE DISPLAY EXCEPT FOR THE AMBIENT TEMPERATURE DISPLAY OTHER LEDS OR LCDS ARE INDICATED NORMALLY TEST KEY EXISTS ON PCB ASSY MAIN BOARD MODE OPERATION CONTENTS REMARKS 1 CONTINUOUS OPERATION OF COMPRESSOR 4 STEPPING MOTOR DAMPER IS COMPLETELY OPENED ren PRESS TEST BUTTON ONCE 2 CONTINUOUS OPERATION OF FREEZING BLDC MOTOR OPEN OF BAFFLE FREEZING FAN TURNS OFF SIRONG COLD MODE HIGH SPEED RPM AND COOLING BLDC MOTOR 5 ALL DISPLAY LEDS OR LCD GRAPHICS TURN ON IN DOOR OPENING 3 DEFROST HEATER TURNS OFF 1 COMPRESSOR OFF 5 ALL DISPLAY LEDS OR LCD GRAPHICS TURN OFF PRESS TEST BUTTON ONCE 2 FREEZING BLDC MOTOR AND COOLING BLDC MOTOR TURN OFF EXCEPT FOR A 8 LCD GRAPHICS RETURN TO THE NORMAL Test2 AT THE TEST MODE STATUS 3 DEFROST HEATER TURNS ON EXCEPT FOR A 22 8 22 LEDS MODE WHEN THE DEFROST FORCED DEFROST MODE 4 STEPPING MOTOR DAMPER IS COMPLETELY CLOSED SENSOR IS ABOVE 5 CLOSING OF BAFFLE NORMAL PRESS TEST BUTION ONCE RETURNING TO INITIAL STATUS COMPRESSOR WILL OPERATE STATUS AT THE TEST MODE 2 STATUS AFTER DELAY FOR 7 MIN 19 MICOM FUNCTION Note1 R2 sensor OptiChill sensor and water tank sensor Ice maker sensor Ice maker Unit are not indicated on the failure indicating part but indicated in checking Display When pressing for more than the button of freezing temperature and super freezer button for more than 1 second
42. Buttonissetat weak compartment Dooris open interference by food Deodorizer No deodorizer Poor capacity Food Storage Seal condition Storage of fragrant foods Long term storage Others Odors from cleaners or items which shroud not be stored in a refrigerator 59 09 2 Faults 2 1 Power Problems Causes Checks Measures Remarks No power on Power cord cut Check the voltage with tester Replace the components outlet Faulty connector insertion Check visually Reconnect the connecting parts Faulty connection between plug and adapter Check visually Reconnect the connecting parts Fuse blows out Short circuit by wrong connection Low voltage products are connected to high voltage Short circuit by insects Electricity leakage High voltage Short circuit of components tracking due to moisture and dust penetration Check the fuse with tester or visually Check the input volt are with tester between power cord and products Check the resistance of power cord with tester if itis itis shorted Find and remove the cause of problem ex short high voltage low voltage Replace with rated fuse Replace with rated fuse after confirming its specification E If fuse blowns out frequently confirm the cause and prevent 2 2 Compressor Check other parts Prob
43. CTIFIERS RL3 SANKEN BK 350V 5 804 SONSEC SANKE 4 32 ODB360000AA TODE RECTIFIERS 3SBA60 BK SHINDENGEN 600V 4A SHINDENGEN BDI 33 00040040944 DIODE RECTIFIERS N4004 PYUNG CHANG 0041 400V 1 30A 75NS SUA DELTA PYUNGCHANG D5 9 34 002400700944 DUE RECTIFIERS 1N4007 MOTOROLA 0041 600V 15 60A 7585 10UA DELTA PYUNGCHANG D10 35 ODZRM00188A DIE ZENEKO RLZ R TP LLDS LL 34 SOOMW 5 6 COMA ZDI 36 00041480988 IDE SWITCHING N4148 0035 75V 450MIL ROHM PYUNCHANG 37 0CE476ZV6E0 CAPACITOR FIXED ELECTROLYTIC 47UF HE 450V 20 BULK SNAP IN RUBYCIN CE1M109 38 0 2267 638 CAPACITUR FIXED ELECTROLYTIC eUF YXA 90V 20 EO TP 5 RUBYCON CE2 105 39 0CE1087H610 CAPACITOR FIXED ELECTROLYTIC UF YXG 25V 20 FL BULK RUBYCON 3105 40 0CE1087J610 CAPACITOR FIXED ELECTROLYTIC UF YXG 35V 20 FL BULK RUBYCII CE4Q05 41 OCE227ZF638 CAPACITUR FIXED ELECTROLYTIC GUE 16V 20 FMS TP 5 RUBYCON CES 85 42 DCE227XH638 CAPACITUR FIXED ELECTROLYTIC GUE RD 25V 207 FMS TP 5 SAW WHA 9 10 105 43 00105275638 CAPACITIIR FIXED ELECTROLYTIC UF 50V 20 FMS TP 5 RUBYCIN 13 85 44 0 1077 638 _ CAPACITUR FIXED ELECTROLYTIC 100UF 25V 20 FMS 5 RUBYCON CET9 85 45 OCE1067K638 CAPACITIR FIXED ELECTROLYTIC UF 50 20 FM TP 5 RUBYCUN CE6 8 11 12 14 85 46 OCK471DK96A CAPACITIR FIXED CERAMICCHIGH DIELECTRIC 0 0047UF 2012 50V 80 20 R TP X7R MARATA 47
44. D 1000UH 207 6 125 BULK TNC 13 4 3 024470 FUSE DRAWING 15A 250V EF SAM JU 103 6901 38001 FUSE ASSEMBLY KORE PJT N S SAM JU FUSE HOLDER 104 0550018500 FUSE SLOV BLOW 5000 250 V 5 2X20 LD GL UL CSA SAM JU FUSE2 103 0Q01030F CONNECTOR CIRC WAFER GP881191 2 HAN KUK DAN JA NA KET 2 16 4920 830074 HEAT SINK 03 3 17 25 DRIVE IC STR R S64 69 73 2PIN 1 SCREW SUNG 1 0 107 15870302418 SCREW TAP TITE S BINDING HEAD 03 0 L8 0 MSWR3 FZY TAE SUNG 1 0 18 9 012000 ISOLDERCRUSIN WIRE RSO Die E 109 4911004 SOLDER SOLDERING NA HEESUNG METAL BAR SN 63 HI SUNG 10 59333105 FLUX 50 0 805 0 830 KOREA F H 206 KOKI E XMAGIC R UM 6630JB8007M CIINNECTER CIRC WAFER 917791 1 13 2 5MM RED 9 DIII IC DRAWING 1 7774 16 SDIP BK DRIVE IC STEPPING MOTOR TOSHIBA 1012 13 0CE1057K638 CAPACITUR FIXED ELECTROLYTIC UE 50 20 FMS TP 5 RUBYCON CE16 85 14 0 1067 638 CAPACITIR FIXED ELECTROLYTIC 10UF 50V 20 TP 5 RUBYCON 17 85 15 0CK223DK96A CAPACITOR FIXED CERAMICCHIGH DIELECTRIC 22NF 2012 50V 80 20 R TP X7R MURATA CC30 31 16 ORH1002L622 RESISTOR METAL GLAZED CHIP 1 1 8 W 5 2012 R TP R70 117 08010006609 RESISTOR FIXED CARBON FILM 10K OHM 1 4 W 5 TAS SMART CHOHYANG R68 69 18 05147010609 RESISTOR FIXED CARBON FILM 4 7K DHM 1 4 W 5 TAS SMART CHOHYANG R71 19 08020
45. D CHECK POINTS HOW TO CHECK 3 Refrigeration is weak 1 Refrigerant Partly leaked 2 Poor defrosting capacity r Drain path pipe clogged Defrost heater does not generate heat Weld joint leak Parts leak r Inject adiabatics into drain hose Injectthrough the hole Seal with drain Foreign materials Adiabatics lump input penetration Damage by a screw or damp Otherforeign materials input Cap drain is not disconnected Parts Plate disconnected heater Cord heater Wire is cut Heating wire Contact point between heating andelectric wire Dent by fin evaporator Poor terminal contacts Wire is cut Lead wire Heating wire Contact point between heating and electric wire Heating wire is corroded Water penetration Badterminal connection Check visually B Check terminal Conduction OK No conduction NG If wire is not cut refer to resistance V Voltage R Resistance 2 p d 52 TROUBLE DIAGNOSIS HOW TO CHECK 3 Cooling air leak Bad gasket adhestion Doorsag Bad adhesion 4 No cooling air circulation r Faulty fan motor Fan motor Door switch CLAIMS CAUSES AND CHECK POINTS 3 Refrigeration Residual Weak heat from heater Sheath Heat
46. DC MOTOR HEATER ABNORMAL FREEZER SENSOR ON FOR 15 1 FREEZER SENSOR Er FS SHORT CIRCUIT OFF FOR 15MIN STANDARD RPM ABNORMAL REFRIGERATOR FULL OPENING REFRIGERATOR SENSOR R1 UPPER FOR 10 MIN 2 PART IN THE REFRIGERATOR Er iS RN i STANDARD RPM FULL CLOSING COMPARTMENT FOR 15 MIN Se REFRIGERATOR REFRIGERATOR 3 62 NORMAL DISPLAY NOTE 1 SENSOR R2 STANDARD RPM PART IN THE REFRIGERATOR CONPARIMENT ABNORMAL DEFROST SENSOR DEFROST SENSOR Er ds SHORT CIRCUIT STANDARD REM ba NO DEFROST DEFROST HEATER TEMPERATURE FUSE OPEN 5 FAILED DEFROSTING Er dH UNPLUGGED CONNECTOR STANDARD RPM INDICATED 4 HOUR LATER AFTER TROUBLE MOTOR DEFECT HOOKED OF 6 ABNORMAL FREEZING Er FF LEAD WIRE TO FAN CONTACT OFF BLDC MOTOR OF STRUCTURES WITH FAN SHORT OR OPEN OF LEAD WIRE THERE IS NO SIGNAL OF BLDC T Er CF MOTOR MORE THAN 115 SEC STANDARD RPM OFF OPERATION OF FAN MOTOR SHORT OR OPEN OF LEAD WIRE CONNECTING BETWEEN Er MAIN AND DISPLAY PCB STANDARD RPM TRANSMISSION DX AND RECEIVING PART ABNORMAL AMBIENT SENSOR 9 AMBIENT SENSOR NORMAL DISPLAY NOTE 2 SHORT CIRCUIT ABNORMAL OPTICHILL SENSOR 10 OPTICHILL SENSOR NORMAL DISPLAY NOTE 1 SHORT CIRCUIT ABNORMAL ICE MAKER SENSOR 11 ICE MAKER SENSOR NORMAL DISPLAY NOTE 1 SHORT CIRCUIT FAULTY ICE MAKER UNIT ABNORMAL MOTOR OR
47. DOOR SW wol 4 RI SENSOR Ana Em zi 2 pom R2 SENSOR STEPPING MOTOR Pas Reverse v M ICE MAKER SO MOTOR EE DAMPER HEATER MAGIC ROOM 55 MAGIC ine STEPPING m ux MOTOR pis Vo e MAGIC ROOM SENSOR eda ICE MAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR 1 Working Principles 1 1 Maker Working Principles Power Input Level Ice Maker Cube Mould for Initial Control after power is input Initial Control Wait until the water in the cube mould is frozen after ice maker starts operation Ice Making Control Ice Ejection Control motor in normal and reverse direction and eject ice into the ice bank if ice bank is not full Conduct Ice Making Control after supplying water into the ice maker cube mould by operating water valve Water Supply Control This is for refrigerator assembly line and service When ice making test switch is pressed it operates in the following steps initial gt ice ejection gt water supply control steps gt Check ice bank is full of ice by rotating ice ejection 1 2 Dispenser Working Principles 1 This function is available in Models LSC27926 where water and ice are available without opening freezer compartment door 2 Cru
48. Drier must be replaced temperature 1 Check the welded parts of the refrigerant Shortage of refrigerant Check frost formation on the surface of evaporator in the freezer compartment If the frost forms evenly on the surface it is OK If it does not it is not good Find out the leaking area repair evacuate and recharge the refrigerant No leaking remove the remaining refrigerant and recharge new refrigerant Drier must be replaced SISONDVIC 31910041 9 Problems Causes Checks Measures Remarks High temperature in the freezer compartment Cycle pipe is clogged Check sequence 1 Check temperature of condenser manually If itis warm OK If it is not compressor discharging joints might be clogged 2 Manually check whether hot line pipe is warm If it is warm OK If it is not condenser outlet weld joints might be colgged Heat up compressor discharging weld joints with touch disconnect Remove the causes of clogging weld evacuate and recharge the refrigerant If it s warm OK If it s not condenser discharging line weld joints might be clogged Disconnect with torch remove the causes evacuate and recharge seal refrigerant the pipes and check the clogging Direr must be replaced Leak at loop pipe weld joint discharge in compressor Check sequence 1 Manually check whether condenser is warm It is
49. Faulty button pressure and contact Press button to check operation Door cannot press door switch button Check visually Confirm icing causes and repair Replace door switch Door sag fix door Door liner bent replace door or attach sheets Bad radiation conditions in compressor compartment Check the clearance between the refrigerator and wall 50 mm in minimum Check dust on the grill in compressor compartment Check dust on the condenser coils Keep clearance between refrigerator and walls minimum 50mm Remove dust and contaminants from grill for easy heat radiation Remove the dust with vacuum cleaner from the coils condenser while the refrigerator is off The fan may be broken if cleaning performs while the refrigerator is on SISONDVIC 9 2 4 Cooling the freezer compartment drier inlet and outlet and drier auxiliary in the compressor compartment high pressure side 2 Check the end of compressor sealing pipe low pressure side 3 Check silver soldered parts Fe Fe Fe 4 Check bending area of wire condenser pipe in compressor compartment cracks can happen during bending 5 Check other parts compressor compartment and evaporators in freezer compartment Problems Causes Checks Measures Remarks High Refrigerant leak Check sequence Weld the leaking part recharge the
50. HALL IC LEAD 12 CE MAKER UNIT NORMAL DISPLAY NOTE 1 WIRE SHORT CIRCUIT FAULTY MOTOR DRIVING CIRCUIT ABNORMAL WATER TANK SENSOR 13 sENSOR NORMAL DISPLAY NOTE 1 SHORT CIRCUIT s DISPLAY PARTS TURN OFF OTHER THAN FREEZER ROOM NOTCH TEMPERATURE DISPLAY AND REFRIGERATOR ROOM NOTCH TEMPERATURE DISPLAY FAILURE CODE INDICATION PART IN CASE OF INDICATING FAILURE MODES EXCEPT FOR NOTE2 NOTE 1 R2 SENSOR WATER TANK SENSOR AND ICE MAKER SENSOR ICE MAKER UNIT ARE NOT INDICATED ON THE FAILURE INDICATING PART BUT INDICATED IN CHECKING DISPLAY WHEN PRESSING FOR MORE THAN THE OF FREEZING TEMPERATURE AND SUPER FREEZER BUTION FOR MORE THAN 1 SECOND NORMAL LED OR LCD GRAPHIC ON THE C PART TURNS ON R2 SENSOR MIDDLE ROOM L ABNORMAL LED OR LCD GRAPHIC ON THE C PART TURNS OFF NORMAL LED OR LCD GRAPHIC ON THE D PART TURNS ON WATER TANK SENSOR ABNORMAL LED OR LCD GRAPHIC ON THE D PART TURNS OFF TEOWERIED ORICO NORMAL LEDS OR LCD GRAPHIC ON THE E PART TURNS ON GRAPHICS TURN ON SENSOR ABNORMAL LEDS OR LCD GRAPHIC ON THE E PART TURNS OFF NORMAL LEDS OR LCD GRAPHIC ON THE F PART TURNS ON ICE MAKER UNIT L ABNORMAL LEDS OR LCD GRAPHIC ON THE PART TURNS OFF NOTE 2 FREEZER ROOM NOTCH TEMPERATURE DISPLAY AND REFRIGERATOR ROOM NOTCH TEMPERATURE DISPLAY FAILURE CODE INDICATION PART ARE NORMALLY INDIC
51. HANDLE 1 Aluminum short handle Model 1 Grasp the handle by both hands and hold it upward bd 90 3 SHROUD GRILLE 1 Loosen two screws after disconnecting cap screw of a grille fan U with a screwdriver balde 2 Disassembly of a grille fan U Pull forward after opening hook at part with a screwdriver blade 3 Disconnect housing A of a grille fan L from the main body 4 Disassembly of a grille fan L Hold upper part of a grille fan L and pull forward carefully 5 Loosen two screws 6 Disassembly of shroud F U Disconnect housing of B after removing two rail guides with a screwdriver blade 7 Disassembly of shroud F U Hold upper part and pull forward 8 Check foam sticking conditions around a shroud F U and F L during assembling If damaged torn or badly stuck assemble with a new one after sealing well 4 ICEMAKER ASSEMBLY 1 Dispenser Model 1 How to disassemble 1 Remove ice bank from the freezer compartment 2 Loosen two screws on the upper part of icemaker bracket 3 Disconnect icemaker bracket so that it can slide forward 4 Disconnect icemaker housing and sensor housing 5 Disconnect icemaker horizontally by pressing bracket hook part Don t disassemble further The set value may be changed 2 How to assemble The assembly is the reverse order of the above disassembly Bracket Ice Maker Tray Ice Insulation Sensor ER SS 2
52. If there is no change in signals one minute after the geared motor starts to operate it stops icemaker operation and check the signal every hour It resets initialization of icemaker when it becomes normal 4 It judges that the initial control is completed when it judges the ice maker cube mould is horizontal 5 Ice ejection conducts for 1 cycle irrespect of ice in the ice bank when power is initially applied 2 2 Water Supply Control Function 1 This is to supply water into the ice maker cube mould by operating water valve in the machine room when ice ejection control is completed and ice maker mould is even 2 The quantity of water supplied is determined by DIP switch and time lt Water Supply Quantity Table gt LSC27926 REMARKS SEINE WATER quantity of water SUPPLY TIME supplied depends on DIP 1 6 5 SEC switch setting conditions and water pressure as it 2 0 OFF OFF 5 5 SEC is a direct tap water 3 OFF ON OFF 6 SEC connection type the water supplied is 4 v ON di generally 80 cc to 120 cc 5 OFF OFF ON 7 5 SEC DIP switch is on the main 6 ON OFF ON 8 SEC PWB 7 OFF ON ON 9 SEC 8 ON ON ON 10 SEC 3 If water supply quantity setting is changed while power is on water supplies for the amended time If DIP switch is changed during water supply water shall be supplied for the previous setting time But it will supply for the amended time from the n
53. LG REFRIGERATOR CAUTION PLEASE READ CAREFULLY THE SAFETY PRECAUTIONS OF THIS MANUAL BEFORE C HEC OR OPERATING THE REFRGERATOR MODEL LSC27926 CONTENTS WARNINGS AND PRECAUTIONS FOR SAFETY rre ea 3 SPECIFICATIONS C i t 4 PARTS IDENTIFICATION m 5 HOW TO INSTALL THE REFRIGERATOR sr ee 6 HOW TO ADJUST BOOR HEIGFIT ae reote eset et ete Pte a 6 BIETER M O 7 HOW TO CONTROL THE ICEMAKER WATER SUPPLY ern 8 FUNCTION 10 EXPLANATION OF 1 e 23 EXPLANATION OF PWB CIRGUIT 25 eed 23 PWB PARTS DIAGRAM AND u Bene 40 PWB CIRGCUDIDIAGRAM s s eere ee Renata 43 ICE MAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR 46 WOHKING PRINGIPEES 3 o ER eed enge nee Gh Sines eie Deep 46 FUNCTION OF AL ASEA 47 IGE MAKER TROUBLESHOOTING enr E ee ne era n EE a a tt eth e dunes 48 IGE MAKER CIRCUIT iiie ttr rete delatae ie dete 49 CIRCUIT 53 TROUBLE DI
54. NSER 13 lt 4 13 d e R 558 14 HIBAR HEATER 5 12 lt 1 5 14 112 i o 1 DISP LAMP 3 e ox t 1 56K 2W Y E 12 13108 aT 1 He d P72 2 P73 AIN13 P74 P75 AINIS P76 AINT PTT Poo Pot P02 POS P06 TOSHIBA TMP87C841N IC1 EXPLANATION FOR MICOM CIRCUIT 3 Door opening sensing circuit Measuring part pas 46 R35 5 CONG 15 2K L 1 9 F DOOR S W 7 me 5 CON7 P44 45 R51 E R DOOR S W 223 i do 4 Door of Freezer Refrigerator MICOM 44 45 45 46 47 48 Pin Closing 5 V Switch at both ends are at Off status Opening D Switch at both ends are at On status d If either switch fails the light will not come Since door switches A and B are interconnected if either fails the other will not respond properly 26 EXPLANATION FOR MICOM CIRCUIT 1 5 Temperature sensing circuit MORIS 1 pro F SENSOR cci3 L 2K 7 223 T RDI 10uF e P65 61 21 854 26 1KF 50V 3 AIN5 core 2K 2 evo 50 RRI CON7 62 58 R53 2
55. ORNI622G409 RESISTOR FIXED METAL FILM 16 2K OHM 1 4 V 1 00 TAS2 SMART CHOHYANG BELEN 3 ORN261264099 RESISTUR FIXED METAL FILM 6 1K OHM 1 4 W 1 00 TAS SMART CHOHYANG RDLRRLRR 84 ORN9101G409 RESISTOR FIXED METAL FILM 9 1K OHM 1 4 V 1 00 TAS SMART CHOHYANG 85 ORNO4016409 RESISTIR FIXED METAL FILM 2 4K OHM 1 4 W 1 00 TAS SMART CHOHYANG 6 ORNI002G4099 RESISTUR FIXED METAL FILM OK OHM 1 4 W 1 007 TAS SMART CHOHYANG 87 OTRKEOO008A TRANSISTOR BIPOLARS BK 0106 60V 5 KEC 02 4 88 07831980044 TRANSISTOR KTC3198 TP Y 1815 KEC 03 5 9 OTRIOG009AF TRANSISTOR BIPOLARS KRC106M TO92M 50V 100 KEC 01 90 6210JBB001A FILTERCCIRC EMC 5321040 52 SAW WHA F 91 6600RRTO0IW SVITCH TACT HVVS02GAA POSTECH 12V DC SOMA TAPING POSTECH 92 6600JB8003A 3P DIP S W GO 93 685485000 JUMP WIRE 52MM TP TAPING SN DAE A LEAD J01 15 18 31 36 37 39 41 94 6854B50001A JUMP WIRE 52MM TP TAPING SN DAE A LEAD JRCI JCR4 95 EGUREN JUMP WIRE 52MM TP TAPING SN AE LEAD 96 6854B50001A LINE WIRE 92MM TP TAPING SN DAE LEAD 97 6854B50001A JUMP WIRE 52MM TP TAPING SN DAE A LEAD JFLJF2 98 6200JB8001B ILERIK EMC 120 0 1UF PILKOR PILKOR CR 99 6200JB8009B IFILTERSCIRC EME CH940050 TNC BK NC L 100 6200JB8007X FILTERCCIRO EMC UV11 05320 TNC 0 54 320MH TNC Le 101 OLR1001M4F INDUCTOR RADIAL LEA
56. SONDVIC 0 Problems Causes Checks Measures Remarks Sound Popping almost the same as animals crying sound It happens when refrigerant expands at the end of capillary tube Check the sound of refrigerant at the initial installation Check the sound when the refrigerator starts operation after forced defrosting Check the restrainer attachment conditions on the evaporator and capillary tube weld joints Check the restrainer attached on the evaporator and capillary tube weld joints and attach another restrainer If itis continuous and servere insert capillary tube again depth 15 3mm Fasten the capillary tube to suction pipes or detach in the compressor compartment Explain the principles of freezing cycles Water boiing or flowing sound It happens when refrigerant passes orifice in accumulator internal pipes by the pressure difference between condenser and evaporator Check the sound when compressor is turned on Check the sound when compressor is turned off Explain the principles of freezing cycles and refrigerant flowing phenomenon by internal pressure difference If sound is servere wrap the accumulator with foam and restrainer Sound of whistle when door closes When door closes the internal pressure of the refrigerator decreases sharply below atomosphere and sucks air into the refrigerator making the whis
57. STR G6351L SANKEN SPIN T0220 ST SMPS 1 CHIP SANKEN 2 13 OIPMGNEQOIA C POWER MANAGEMEN PS2561 1 NEC 4P DIP TLP762JF 03 8 14 OIKE431000A CKEC KIA431 3 PIN TP KEC 4 15 OIKE780500V IC LINEAR KIA7809PI KEC 105 16 DESIO ICKEC KID65003AF 1650 BK 7CH DRIVER KEC 126 7 17 OIKE704200A CKEC KIA7042P RESET KEC C9 18 01117774004 IC DRAWING 7774 16 SDIP BK DRIVE IC STEPPING MOTOR TOSHIBA D 19 OIRH622200A IBON BA6222 10SIP REVERSIBLE MOTOR DRIVER 20 69200000014 RELAY ALEISBI2 MATSUSHITA 250VAC 16A 12VDC 1A VENTING _MASUSHITA RY1 4 6 21 6920JB2004D HEIA DHI2D1 0 Q JAPAN DEC 050 10 12VDC 1A NO VENTINGDATICHI RY2 6900820038 HEIA ALDII2 MATSUSHITA 2S0VAC 12VDE 1 MATSUSHITA RY3 7 8 9 11 23 6920JB2003B HEIA MATSUSHITA 250VAC 12 VDC MATSUSHITA 24 69204 2004 HEIA 710810 NAIS 2S0VAC 16 12VDC 1 VENTING NAIS RYS 25 6920JB2009A HEIA 05 1 OMRON 12V 227V IC OMRON RY12 H BAR 26 6920JB2009A RELAY 055 1 OMRON 12V 227V IC OMRON RY13 27 6212 JB8001B RESONATOR CERAMIC CSTS0400MG03 MURATA 4MHZ TP MURATA 5 28 6102 JB8001A MARISTUR SVC621D 14A SAMWHA UL VDE BK 620V SAW JIN VAL 29 00810700944 DIUDE RECTIFIERS FRIO7 TP DELTA 0041 1000V 1A 3 DELTA D1 2 12 13 14 15 30 ODRSA00090A IDE RECTIFIERS RL3 SANKEN BK 350V 3 5A 804 SONSEC SANKEN D3 31 006 00090 DIODE RE
58. T CUT CUT 566 1 1 8 F 6 CUT CUT 1 C 41 8 F CUT CUT CUT CUT 0 CIO F This circuit allows adjustment of the set temperature for compensation by changing jumpers at locations JCR1 JCR4 32 EXPLANATION FOR MICOM CIRCUIT 1 11 Communication circuit and connection L Wire between main PCB and display PCB The following communication circuit is used for exchanging information between the main MICOM of the Main PCB and the dedicated MICOM of the LED LCD Display PCB A bi directional lead wire assembly between the two boards is required for the display to function properly Poor communication occurs if a continuous information exchange fail to continue for more than 2 minutes between main MICOM of main PCB and LCD LED dedicated MICOM for LCD LED control of display PCB Main PCB L Wire FD H 4 wires Display PCB DC12V Main MICOM LCD LED dedicated GND Transmission error status Reception notch status 1 CONS Ga 5 Jo oz 2 R30 42 43 R29 p In 201 gt GO rh 104 5 6V 0 5W lt R31 P43 44 F 4 7K 6H m o A qi C106 BOOM OF SE e e LI 3SECS u am MONTH 33 EXPLANATION FOR CIRCUIT 2 Sensor resistance characteris
59. TOR FIXED CARBON FILM 4 7K OHM 1 4 W 57 TASC SMART CHOHYANG 15 28 31 43 20 61 65 66 71 08910011600 RESISTOR METAL GLAZED CHIP IK OHM 1 8 V 5 2010 R TP R9 E ORHi004LG2O RESISTOR METAL GLAZED CHIP IMOHM 1 8 V 57 2012 R TP R14 73 ORH002L622 RESISTOR METAL GLAZED CHIP LOKOHM 1 8 W 5 2012 R TP 16 2346 74 ORH470IL622 RESISTOR METAL GLAZED CHIP 4 7K OHM 1 8 V 5 2010 R TP ROHM R13 24 27 37 44 75 ORH200IL622 GLAZED CHIP 2K OHM 1 8 W 5 2012 R TP ROHM R30 32 39 92 93 04 98 62 63 64 76 08220010600 RESISTIR FIXED CARBON FILM eK OHM 1 4 W 5 TAS SMART CHOHYANG 836 42 49 51 59 60 D 081002060 RESISTIR FIXED CARBON FILM 10 OHM 1 4 V 5 TAS SMART CHOHYANG 77 08010006609 RESISTUR FIXED CARBON FILM 12K OHM 1 4 V 5 52 SMART CHOHYANG RCRI D 08080010609 CARBON FILM 8 2K OHM 1 4 W 5 007 TAS2 SMART CHDHYANG RCRI 78 081002060 RESISTIR FIXED CARBON FILM 10K OHM 1 4 V 5 TAS SMART CHOHYANG 78 08012026609 RESISTIR FIXED CARBON FILM 12K OHM 1 4 V 5 52 SMART CHOHYANG 78 08082010609 RESISTIR FIXED CARBON FILM 8 2K OHM 1 4 W 5 007 TAS2 SMART CHOHYANG RCFI 79 08139010600 RESISTIR FIXED CARBON FILM 3 9K OHM 1 4 W 57 TAS SMART CHOHYANG R38 45 0 0033006609 RESISTUR FIXED CARBON FILM 330 DHM 1 4 W 5 007 TAS2 SMART CHOHYANG R40 47 8 08015019609 RESISTOR FIXED CARBON FILM LOK OHM 1 2 5 TAS SMART CHOHYANG KOIA E
60. The compressor and fan produce sounds There is a fan in the freezer compartment which blows cool air to freezer and refrigerator compartments Hiss sounds heard when the air passes through the narrow holes into the freezer and refrigerator compartments Cooling Fan sound in the compressor compartment There is a fan on the back of the refrigerator which cools the compressor compartment If there is a small space between the refrigerator and the wall the air circulation sounds may be noticeable Noise of Compressor This operating sound happens when the compressor compresses the refrigerant The compressor rotates at 3600 RPM The sound of compressor Bigger refrigerators make more noise than small ones Click sounds Bi Explain the principles of temperature change The sounds happens when pipes and internal evaporator in the refrigerator compartment expand and contract as the temperature changes during the refrigerator operation This sound also happens during defrosting twice a day when the ice on the evaporator melts Clunk sound E Explain that it comes from the compressor when the refrigerator starts When the refrigerator operates the piston and motor in the compressor rotate at 3600 RPM This sound is caused by the vibration of motor and piston when they start and finish their operation This phenomenon can be compared with that of cars When an automobile engine starts it is loud at first but quiets dow
61. air Clogged intake port in the refrigerator compartment Sealing is not good Too much food is stored and clogs the discharge port Bad defrosting Check the food is stored properly check discharge and intake port are clogged Check icing on the surface of baffle and cool air path pipe after dissembling the container box Check icing at intake ports of freezer and refrigerator compartment Be acquainted with how to use Sealing on connecting parts Check the damper and replace it if it has defects Check defrost After forced defrosting check ice in the evaporator and pipes Check the defrost related parts if problem is caused by faulty defrosting 2 Faulty door or refrigerator compartment Faulty gasket Faulty assembly Check gasket attached conditions Check door assembly conditions Correct the gasket attachment conditions and replace it Door assembly and replacement Replacement should be done when it cannot be repaired 3 Overcooling in the refrigerator compartment Faulty damper in the refrigerator compartment Faulty MICOM faulty sensor Check refrigerator compartment is overcooled when button pressed on weak Check parts are faulty Replace faulty parts 4 Bad defrosting Heater wire is cut Defective defrost sensor Defrosing cycle Check frost on the evaporator after dissembling shroud and fan grill
62. air inflow through the gap of heater plate 3 Icing by the gap of heater plate 1 Check the inner duct with mirror 2 Check by inserting soft copper wire into the duct soft and thin copper not to impair heating wire 1 Turn power off 2 Raise the front side door side support the front side legs and let the ice melt naturally If power is on melt the frost by forced defrosting 3 Reassemble the heater plate Bad cool air inflow and discharge and bad defrosting due to faulty contact and insertion bad connector insertion into housing of heater melting fuse and motor fan 1 Turn on power open or close the door check that motor fan operates If it operates motor fan is OK 2 Disconnect parts in the refrigerator compartment check the connection around the housing visually defrost and confirm heat generation on the heater Do not put hands on the sheath heater 3 Check the parts which have faults described in 1 amp 2 mechanical model disconnect thermostat from the assembly 1 Check the faulty connector of housing and reassemble wrongly assembled parts 2 If the parts are damaged remove the parts and replace it with a new one SISONDVIC 31910041 99 2 6 Icing Problems Causes Checks Measures Remarks Icing in the refrigerator compartment Damper icing Pipe icing Discharging pipe icing 1 Bad circulation of cool
63. arts measurements and check visually 55 TROUBLE DIAGNOSIS CLAIMS CAUSES AND CHECK POINTS HOW TO CHECK 6 Condensation and ice formation 7 Sounds 4 Condensation on door Condensation the duct door Duct door heater is cut Condensation on the Recess Heater is cut dispense recess Duct door is open Foreign material clogging Condensation on the Not fully filled 7 Surface 4 door surface Cormer 1 Liquidkak Adiabatics liquid contraction Condensation Bad wing adhesion Wing sag lower on the gasket Door liner shape mismatch surface Comer Too much notch Broken Home Bar heater is cut 5 Water on the floor Condensation in the refrigerator compartment M Defrosted water overflows Clogged discharging hose Discharging hose Evaporation tray located at wrong place location Tray drip 1 Damaged I Breaks holes Small Capacity Position of drain 1 Compressor compartment operating sounds Compressor sound Sound from machine itself inserted Sound from vibration Restrainer Bushing hard seat rr Distorted Aged Burnt Stopper Bad Stopper Not fit assembly inner diameter of stopper Tilted Not Compressor base not connected Bad welding compressor stand
64. as ice ejection and water supply control do not work when cube mould is full of ice 2 6 Other functions relating to freezer compartment door opening 1 When freezer door is open ice dispenser stops in order to reduce noise and ice drop 2 When freezer door is open during ice ejection and cube mould returning to horizontal condition ice ejection and cube mould level return proceed 3 When freezer door is open geared motor and cube ice solenoid immediately stop and duct door solenoid stops after 5 seconds 4 Water dispenser stops in order to protect water drop when freezer door is open 5 Test function operates normally irrespect of refrigearator compartment door opening 45 ICE MAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR 3 Ice Maker Troubleshooting Troubleshooting X itis possible to confirm by pressing freezer and refrigerator temperature control buttons for more than 1 second ice maker is normal if all leds are on refer to trouble diagnposis function in MICOM function 2 8 Is DC Power 5V and 12V output normal Is cube ice LCD off during troubleshooting check Is Crushed Ice LCD off during troubleshooting check No Are ice ejection and level return normal when test switch is pressed for more than 0 5 second Does the bell sound once Is water suppy normal after Ice ejection and level return by ice ejection motor Failed DC Power
65. be sure in each cycle each pipe is replaced in its original position before closing the cover of the mechanical area 3 5 Standard Regulations For Heavy Repair 1 Observe the safety precautions for gas handling 2 Use JIG or a wet towel in order to prevent electric wires from burning during welding In order to prevent insulation break and accident 3 The inner case will melt and the insulation will burn 4 The copper piping will oxidize 5 Do not allow aluminum and copper pipes to touch In order to prevent corrosion 6 Observe that the inserted length of a capillary tube into a drier should be 12 mm Drier Molecular Pipe 7 Make sure that the inner diameter is not distorted while cutting a capillary tube 8 Be sure that the suction pipe and the filling tube should not be substituted each other during welding High efficiency pump 82 TROUBLE DIAGNOSIS 3 6 Brazing Reference Drawings PIPE ASSEMBLY HOT LINE Freezer Copper Brazer Copper Brazer OOK lt CAPI TUBE DRIER ASSEMBLY Silver Brazer Copper Brazer PIPE ASSEMBLY ONDENSER ASSEMBLY WIRE JOINT Copper Brazer Coppper Brazer Copper Brazer Rage Silver Brazer 83 TROUBLE DIAGNOSIS 4 HOW TO DEAL WITH CLAIMS 4 1 Sound Problems Checks and Measures Hiss sounds Explain general principles of sounds All refrigerators make noises when they run
66. blems Causes Checks Measures Remarks Vibration sound Clack 1 Vibration of shelves and foods in the refrigerator 2 Pipes interference and capillary tube touching in the compressor compartment 3 Compressor stopper vibration 4 Moving wheel vibration 5 Other structure and parts vibration 1 1 Remove and replace the shelves in the refrigerator 1 2 Check light food and container on the shelves 2 1 Touch pipes in the compressor compartment with hands 2 2 Check capillary tube touches cover back 3 1 Check compressor stopper vibration 4 1 Check vibration of front and rear moving wheels 5 1 Touch other structures and parts 1 Reassemble the vibrating parts and insert foam or cushion where vibration is severe 2 Leave a clearance where parts interfere with each other 3 Reduce vibration with bushing and restrainer if it is severe especially compressor and pipe 4 Replace compressor stopper if it vibtates severely Irregular sound Click 1 It is caused by heat expansion and contraction of evaporator shelves and pipes in the refrigerator 1 1 Check time and place of sound sources 1 Explain the principles of refrigeration and that the temperature difference between operation and defrosting can make sounds 2 If evaporator pipe contacts with other structures leave a clearance between them freezer shroud or inner case SI
67. bly Defective refrigerator sensor Defective refrigerator sensor parts Check the resistance of refrigerator sensor with a tester Replace refrigerator sensor Refer to sensor resistance characteristic table in circuit explanation Refrigerator sensor is substituted for other sensor Check the sensor color in the circuit main PCB sensor housing Repair main PCB sensor housing Defective refrigerator sensor assembly condition Check if refrigerator sensor is not fixed at cover sensor but inner case visually Fix again the refrigerator sensor SISONDVIC G Problems Symptom Causes Checks Measures Remarks Bad defrost Defrost is not Defrost lead wire is cut Check if defrost lead wire is cut with a Reconnect lead working tester Wire Defective defrost driving relay Check the voltage of CON2 1 and 7 Replace relay RY 7 Refer to load with a tester after pressing main and 3 driving conditions PCB test switch twice check in circuit If the voltage is normal then it is OK explanation Defective defrost sensor parts Check the resistance of defrost sensor Replace defrost Refer to sensor with a tester sensor resistance characteristic table of circuit explanation Defective Buzzer Defective connecting lead wire from Check lead wire related to door Repair lead wire buzzer continuously main PCB to
68. e Check ice on intake port of freezer and refrigerator compartment Check parts related to defrosting Check defrosting Check ice on the evaporator and pipe Moisture does not freeze on the evaporator but can be sucked into the refrigerator where it condenses and freezes This interferes with cold air circulation and sublimation of the ice 5 Customers are not familiar with this machine Door opens High temperature high moisture and high load Check food interferes with door closing Check ice on the ceilings Be acquainted with how to use SISONDVIC 9 Problems Causes Checks Measures Remarks Ice in the freezer compartment Surface of fan grille Wall of freezer compartment Cool air discharging port Basket rack area Food surface Icing in the shute 1 Bad cooling air circulation Intake port is clogged in the freezer compartment Discharging port is Clogged Too much food is stored Bad defrosting Check food storage conditions visually Check clogging at intake and discharging port of cooling air Check food occupation ratio in volume Less than 75 Check frost on the evaporator after dissembling shroud and fan grille Check icing at intake port of refrigerator compartment Be acquainted with how to use Check defrost Check ice on the evaporator and pipes a
69. e dispenser Ice and water are not Defective connecting lead wire from Main to lever switch Check Lead Wire associated with lever switch with a tester Repair lead wire Check model with dis penser dispensed Defective lever switch parts Refer to door switch in parts repair guide Replace lever switch Defective photo coupler IC parts Check voltage change at photo coupler output terminals with lever switch pressed It is OK if voltage change is between OV 5V Replace photo coupler IC or PCB Defective relay associated with ice dispense geared motor cube and dispenser solenoid Check relay RY4 RY5 RY12 with a tester Replace defective relay Defective parts associated with ice dispense geared motor cube and dispenser solenoid Check resistance of parts with a tester Replace defective parts Defective relay associated with water dispense Check relay RY7 with a tester Replace defective relay Defective parts associated with water dispenser Check resistance of parts with a tester Replace defective parts SISONDVIC TROUBLE DIAGNOSIS 3 Cooling Cycle Heavy Repair 3 1 The Heavy Repair Standards for Refrigerator with R134a Refrigerant NO Items Unit Standards Purposes Remarks 1 Pipe and piping Min Pipe within 1 hour Topr
70. e dispenser press switch after selecting ice cube ice crushed ice or water geared motor and solenoid Cube Water is automatically turned off However the solenoid duct door is stop 5 seconds after Off to prevent short circuit of a coil due to overheat of solenoid 5 Dispenser Lamp On Off function Lamp on the dispenser part is turned on if pressing the dispenser press switch after selecting ice cube ice crushed ice or water If detaching the hands it is turned off 6 Selection function of water crushed cube ice 1 This is function to allow selection of water crushed cube ice function depending on user s selection Display and selection is done if pressing the dispenser selection button 2 In the initial Power On cube ice is automatically selected 3 In selecting cube ice geared motor is operated so that crushed ice can be supplied outside if pressing the press switch when ice is formed in the ice storage container Bank Ice 4 In selecting cube ice geared motor is operated so that cube ice can be supplied outside if pressing the press switch when ice is formed in the ice storage container Bank Ice 7 Water dispenser function 1 It is displayed for selection if user selects water at the function adjustment part 2 Water dispenser function is a type directly connected to a water pipe The water solenoid valve built in at the right side of the Back plate is opened so that water can be supplied if selecting Water
71. ely to play in or around it SPECIFICATIONS 1771 mm 69 11 16 in 1004 mm 39 in ITEMS SPECIFICATIONS ITEMS SPECIFICATIONS DIMENSIONS 912 x 829 x 1771 mm DRIER MOLECULAR SIEVE XH 7 WxDxH 35 9x32 6x69 7in CAPILLA ID 20 8 5 NET WEIGHT 130 kg 286 6 Ibs FIRST DEFROST 4 5 Hours COOLING SYSTE Fan Cooling DEFROST CYCLE 13 15 Hours TEMPERATURE CONTROL Micom Control DEFROSTING DEVICE Heater Sheath DEFROSTING SYSTEM Full Automatic ANTI SWEAT HEATER Dispenser Duct Door Heater Heater Defrost Dispenser Heater INS ULATION Cyclo P entane ANTI FREEZING HEATER Wistar Tani Hester COMPRESSOR PTC Starting Type Damper Heater EVAPORATOR Fin Tube Type FREEZER LAMP 40W 1 EA CONDENSER Wire Condenser REFRIGERATOR LAMP 40 4 EA REFRIGERANT R134a 185g 6 50z DISPENSER LAMP 15W 1 EA LUBRICATING OIL FREOL 10G 310cc 1741 5 mm 68 1 in Front View 1746 5 mm 68 3 4 in 1771 mm 69 11 16 in 912 mm 35 9in gt 829 mm 32 5 in 897 mm 35 5 16 in 1261 mm 49 5 in ml Top View PARTS IDENTIFICATION Frame Display Dispenser Lamp Ice amp Water Dispenser Button PWB Cover Water Tubes
72. en the defrost sensor is forced defrost mode turn off above 5 C 3 Defrost heater turns on 4 Stepping motor damper is completely closed closing of baffle 5 OptiChil stepping motor damper is completely closed 6 All display LEDs or LCD graphics turn off GR L267BV T RA GR L267BV T S PA Except for A 22 B 22 LEDs GR L267BV T R Except for only middle Notch Bar Graphics Normal Press test button once at Return to the initial status Compressor will operate Status the test mode 2 status after delay for 7 minutes TEST MODE STATUS DISPLAY ROOM WAI um E y an ISI JH oe LL SE am MONTH 21 FUNCTION 2 18 Function of dispenser and water dispenser built in 1 This is function allowing ice and water to come outside without opening door 2 If pressing the dispenser switch rubber button after selecting ice cube ice crushed ice or water ice and water equivalent to each come out However the duct doors are opened by electrical solenoid valve Duct Door Solenoid if pressing the press switch in case of selecting ICE If pressing the dispenser press switch and then detaching the hands the duct door is closed after it is opened for 5 seconds 3 Function allowing ice and water to come stops if freezing room doors are opened 4 If there is no Off signal even when 3 minutes have passed while pressing th
73. eplace display PCB Refer to display circuit in circuit explanation 3181091 SISONDVIQ Problems Symptom Causes Checks Measures Remarks Bad cooling Freezer temperature is high Compressor does not start Compressor Lead Wire is cut Check compressor Lead Wire with a tester Reconnect Lead Wire Defective compressor Measure voltage at PCB CON2 Replace relay RY1 Refer to load driving relay 3 amp 9 after pressing main PCB RY2 or PCB driving circuit in test switch once It is OK if circuit voltage is normal explanation Defective freezer Defective Freezer Check resistance of freezer Replace freezer Refer to sensor sensor parts sensor with a tester sensor resistance characteristics table of sensor in circuit Refer to tables on pages 40 41 and 43 The wrong sensor has been installed Order by model number and part number Confirm the color of sensor in circuits main PCB sensor housing Repair main PCB sensor housing explanation Defective freezer fan motor Fan motor lead wire is cut Check fan motor lead wire with a tester Reconnect lead wire Defective door switch freezer refrigerator home bar Defective fan motor Defective fan motor driving relay Measure the voltage between PCB power blue line and fan motor after pressing test switch of Ma
74. er rated is weak frost Heater plate contact to drain Loosened stopper cord Heater cord L Nottouching the evaporator pipe Location of assembly top and middle Too short defrosting time Defrost Senso Faulty characteristics Seat missing location thickness Structural fault Gasket gap Air inflow through the fan motor Bad insulation of case door No automatic defrosting Defrost does not return Bad attachment Contraction Weak binding force at hinge m locked Wire is cut L Bad terminal contact m Faults Contact distance Button pressure Melted contact Contact Refrigerator and freezer switch reversed Button is not pressed Poor door attachment Door liner dimension Contraction inner liner Misalignment Bad terminal connection Adiabatics liquid leak E Check the fan motor conduction OK No conduction NG 53 TROUBLE DIAGNOSIS CLAIMS CAUSES AND CHECK POINTS HOW TO CHECK 3 Refrigeration is weak 4 No cooling air circulation Faulty motor Fanis constrained Small cooling air Insufficient discharge motor RPM Faulty fan Fan shroud contact Clearance Damping evaporator contact Accumulated residual frost r Fan overload Fan misuse low termperature RPM characteristics 1 Rated pow
75. er misuse Low voltage Fan misuse Bad shape Loose connection Not tightly connected Insert depth Shorud Bent Iceandforeign materials on rotating parts 5 Compressor capacity Rating misuse Small capacity Low valtage 6 Refrigerant r Malfunction of charging cylinder too much or too little Wrong setting of refrigerant 7 Continuous operation Insufficient compressor Faulty compressor No contact of temperature controller Foreign materials 8 Damper opens continuously m Foreign materials rr Adiabatics liquid dump jammed rr The EPS styrofoam drip tray has sediment in it Ascrew or other foreign material has fallen into the drip tray or damper Failed sensor Position of sensor Characteristics Bad characteristics of its own temperatue of damper I Parts misuse Charge of temperature Impact characteristics 9 Food storing place Near the outlet of cooling air Check visually after disassembly Check visually after disassembly 54 TROUBLE DIAGNOSIS CLAIMS CAUSES AND CHECK POINTS HOW TO CHECK 4 Warm 1 Colgged cooling path refrigerator Adiabatics liquid leak compartment Foreign materials Adiabatics dump liquid temperature 5 No automatic operation faulty contacts 6 Condensation and ice formation 2 Food s
76. ext supply 4 When water supply signal is applied to water and ice valves at the same time during water supply water shall be supplied to water valve If water supply signal is applied to ice valve during water supply water shall be supplied to both water and ice valves 2 3 Ice Making Control Function 1 Ice making control is carried out from the completion of water supply to the completion of ice making in the cube mould Ice making sensor detects the temperature of cube mould and completes Ice making ice making sensor is fixed below ice maker cube mould 2 Ice making control starts after completion of water supply control or initial control 3 It is judged that ice making is completed when ice making sensor temperature reaches at 8 C after 100 minutes when water is supplied to ice maker cube mould 4 It is judged that ice making is completed when ice maker sensor temperature reaches below 12 C after 20 minutes in condition 3 43 ICE MAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR 2 4 Ice Ejection Control Function 1 This is to eject ice from ice maker cube mould after ice making is completed 2 If Hall IC signal is on within 3 6 seconds after ice ejection motor rotates in normal direction it does not proceed ice ejection but waits If the ice bank is full ice ejection motor rotates in normal direction in every hour to check the condition of ice bank If the ice bank is not full the water supply control starts a
77. fter completion of ice ejection control If the ice bank is full ice ejection motor rotates in reverse direction and sops under ice making or waiting conditions 3 If ice bank is not full ice ejection starts The cube mould tilts to the maximum and ice is separated from the mould and ice checking lever raises 4 Ice ejection motor stops for 1 second if Hall IC signal changes from OFF low to ON high after 3 6 seconds when ice ejection motor rotates in normal direction If there is no change in Hall IC signals within 1 minute after ice ejection motor operates ice ejection motor stops as ice ejection motor or hall IC is out of order 5 If ice ejection motor or Hall IC is abnormal ice ejection motor rotates in normal direction to exercise initial operation It resets the ice maker if ice ejection motor or Hall IC is normal 6 The mould stops for 1 second at maximum tilted conditions 7 The mould returns to horizontal conditions as ice ejection motor rotates in reverse direction 8 When the mould becomes horizontal the cycle starts to repeat Water Supply Ice Making gt Ice Ejection Mould Returns to Horizontal Maximum tilting point Bank is not full HALL IC ON ray SSR eaan iada SIGNALS OFF Bank is full HALL IC ON OUTPUT SIGNALS OFF ICE CHECKING AXIS ICE CH ECKING LEVEL 30 8 0 10 32 41 53 58 80 160 170 Lock Ice making Ice Checking Ice Ejection Lock
78. fter forced defrosting Check the parts related to defrosting if the problem is caused by the faulty defrosting 2 Bad freezer compartment door Faulty gasket Faulty assembly Check gasket attachment conditions Check door assembly conditions Correct the gasket attachment conditions and replace it Door assembly and replacement Replace when it can not be repaired 3 Over freezing in the freezer compartment Faulty MICOM Refrigerator operates pull down Check if it is operated intermittently The Temperature of freezer compartment is satisfactory but over freezing happens in the refrigerator compartment even though the notch is setat weak Replace defective parts 4 Bad defrosting Heater wire is cut Faulty defrost sensor Defrosting cycle Check frost on the evaporator after dissembling shroud and grille Check ice on the intake port in the refrigerator compartment Check parts related to defrosting Check defrosting Check ice on the evaporator and pipes after forced defrosting 5 User is not familiar with how to use Door opens High moisture food water is stored Check food holds door open Check ice on the ice tray Be acquainted with how to use SISONDVIA 99 2 7 Sound Problems Causes Checks Measures Remarks Hiss sound 1 Loud sound of c
79. function 1 There is a replacement indicator light for the water filter cartridge on the dispenser 2 Water filter needs replacement once six months 3 Water filter light and FILTER RESET HOLD 3SECS text turn on to tell you need to replace the filter soon 4 After replece the filter press and hold the lock button more than 3seconds Then water filter light and FILTER RESET HOLD 3SECS text turn off with reset status Classification HOLD 35205 Filter Status Display 13 FUNCTION 2 2 Dispenser use selection You can select water or ice ae E Please select water slice ice and square by pressing Q button as you desire Please press the push button lightly by catching and pushing in cup Each graphic is indicated for the selected function Tak sounds if 5 seconds pass after ice comes out It is sound that the outlet of ice is closed REFERENCE Please wait for 2 3 second in order to take final ice slices or drops of water when taking out cup from the pressing switches after taking ice or water 2 3 ICE PLUS Please select this function for prompt freezer Function is repeated following below whenever pressing ICE PLUS DISPENSER Pressing Switch arrow mark graphic remains at the On status after flickering 4 times when selecting Special Refrigeration ICE PLUS PLUS function automatically turns off if a fixed
80. g cm 2 5 Others 1 Only nitrogen or R134a should be used when cleaning the inside of piping of the sealed system 2 Check leakage with an electronic leakage tester 3 Be sure to use a pipe cutter when cutting pipes 4 Be careful not the water let intrude into the inside of the cycle 79 TROUBLE DIAGNOSIS 3 4 Practical Work For Heavy Repair Items Precautions Evaporator 1 Removal of residual Low pressure side refrigerant Hot Line Compressor Release High pressure side Refrigent Condenser Intake defective pinch off KEY POINT Observe the sequence for removal of refrigerant If not compressor oil may leak 1 Continue to recover the refrigerant for more than 5 minutes after turning the refrigerator off 2 Install a piercing type valve on the high pressure line drier side Then use the appropriate recovery equipment to recover the refrigerant from the system When the refrigerant has been recovered install a piercing type valve on the low pressure side IT IS IMPORTANT TO OPEN THE SYSTEM IN THIS ORDER TO KEEP THE OIL FROM BEING FORCED OUT The use of piercing type valves will allow future servicing and eliminates the possibility of a 2 Nitrogen blowing Evaporator welding Hot Line 0 y High pressure side Condenser Refrigent Intake When replacing a drier assembling a drier When replacing a compress
81. getables are stored in the refrigerator shelf or chilled drawer instead of vegetable drawer they will be frozen Set the control button at weak if they are also frozen in the vegetable drawer The food stored at inside of the shelf freezes even the control button is set at MID Check if food is stored near the outlet of the cooling air The temperature at cooling air outlet is always below the freezing point Do not store food near the outlet of the cooling air as it block the air circulation Do not block the outlet If the outlet of the cooling air is blocked the refrigerator compartment will not be cooled 86 TROUBLE DIAGNOSIS 4 3 Odor and Frost Problems Checks and Measures Odor in the refrigerator compartment Explain the basic principles of food odor Each food has its own particular odor Therefore it is impossible to prevent avoid food odor completely when food is stored in the completely sealed refrigerator compartment The deodorizer can absorb some portions of the odor but not completely The intensity of odor depends on refrigerator conditions and environments E Check the temperature control button and set at strong Clean inside of the refrigerator with detergent and remove moisture Dry inside the refrigerator by opening the door for about 3 or 4 hours and then set the temperature control button at strong Frost in the freezer compartment Explain the bas
82. ging sequence 1 Check the amount of refrigerant supplied to each model after completing vacuum degassing 2 Evacuate charging canister with a vacuum pump 3 Measure the amount of refrigerant charged Measure the weight of an evacuated charging canister with an electronic scale Charge refrigerant into a charging canister and measure the weight Calculate the weight of refrigerant charged into the charging canister by subtracting the weight of an evacuated charging canister KEY POINT Indicate the weight of an Be sure to charge the evacuated charging canister refrigerant at around 25 C 77 F Be sure to keep 5g in the winer and 59 in summer Calculation of amount of refrigerant charged the amount of refrigerant charged weight after charging weight before charging weight of an evacuated cylinder 81 TROUBLE DIAGNOSIS Items Precautions Evaporator Hot Line Compressor Condenser Charging Canister 4 Refrigerant Charging Charge refrigerant while operating a compressor as shown above 5 Pinch the charging pipe with a pinch off plier after completion of charging 6 Braze the end of a pinched charging pipe with copper brazer and take a gas leakage test on the welded parts 6 Gas leakage test Test for leaks on the welded or suspicious area with an electronic leakage tester 7 Pipe arrangement When replacing components
83. he ice tray and press test switch 4 When ice tray rotates the water in it will spill Collect the spilt water and throw away into the sink 5 When ice tray has finished rotation water comes out from the water tube Confirm the amounts of water in the ice tray refer to fig The optimum amount of water is 110cc Confirm the amount of water Ice maker LIP id Itis acceptable if the adjusted level of water is a bit smaller than optimum level HOW INSTALL REFRIGERATOR 3 2 Control the amount of water supplied to the icemaker Caution Please unplug the power cord from the wall outlet and wait for more than three minutes before disconnecting PWB cover as 310V is applied in the control panel Driver 1 Disconnect PWB cover from the upper part of the refrigerator 2 Adjust the amount of water supplied by using DIP switch Water Supplying Time Control Option LSC27926 REMARKS DIP SWITCH SETTING WATER S 52 m SUPPLY TIME The quantity of water supplied depends on DIP switch setting conditions and water pressure as it is a direct tap water connection type the water supplied is generally 80 cc to 120 cc DIP switch is on the main PWB 1 2 3 4 The water supplying time is set at five seconds when the refrigerator is delivered The amount of water supplied depends on the setting time and water pressure city wa
84. he motor is driven by magnetism formed in the areas of the coils and the stator Rotation begins when a HIGH signal is applied to MICOM Pin 33 of IC10 TA7774F This causes an output of HIGH and LOW signals on MICOM pins 34 and 35 Explanation The stepping motor is driven by sending signals of 3 33 mSEC via MICOM pins 33 34 and 35 as shown in the chart below These signals are output via terminals 10 11 14 and 15 via input terminals 3 6 and 8 of 10 TA7774F the motor drive chip The output signals allow the coils wound on each phase of the stator to form magnetic field which causes rotation Input to the terminals INA and INB of IC10 as shown in the chart below drives the motor CCW Reverse rotation 6 Positive rotation CW INA INB gt 55 29 EXPLANATION FOR MICOM CIRCUIT 1 9 Fan motor driving circuit freezer mechanical area 1 The circuit cuts all power to the fan drive IC resulting in a standby mode 2 This circuit changes the speed of the fan motor by varying the DC voltage between 7 5 Vdc and 16 Vdc 3 This circuit stops the fan motor by cutting off power to the fan when it senses a lock up condition d part 6 part part Motor OFF EN 2V less 2V or less Motor ON 2 3V 12 14V 8 16V Qe 151 CUNG AK d 7 54 53 _ 1
85. he recognition sound of Ding after pressing and holding ICE PLUS button more than 5 seconds It inactivates when resetting the mode power 2 Display Power saving Mode It places display in standby mode until door is opened Press Freezer and ICE PLUS buttons simultaneously to turn all leds become ON and then OFF with the recognition sound of Ding after 5 seconds Be sure not to press only one button to work Once the mode activates the display is always OFF Until door is opened or display button is pressed When 30 seconds has elapsed after closing door or pressing button the display turns OFF To deactivate this mode is same as the activation methods The mode inactivates when resetting the power 3 Change Display Degree to Centigrade Mode from Fahrenheit Mode To change temperature display from Fahrenheit to Celsius press and hold FREEZER and REFRIGERATOR buttons simultaneously for more than 5 seconds Do the same to convert back to Celsius 4 Exhibition Mode This function is available when exhibiting a refrigerator in the shopping moll Function is inserted with recognition sound Ding if pressing both the ICE PLUS button and the REFRIGERATOR button at the same time for more than 5 seconds If function is inserted all basic refreezing functions at the R F room and the Storage room F FAN C FAN turns off and the display normally operates However the dispenser function normally operates The
86. ic principles of frost formation main causes for frosting Door was left open Air penetration through the gasket Too frequent door opening parties etc Hot foods are stored before they are cooled down The temperature of freezer is 19 C 2 2 F if temperature 15 set at MID If hot air comes into the refrigerator fine frost forms as cold air mixes with hot air If this happens quite often much frost forms inside of the refrigerator If the door is left open in Summer ice may form inside of the refrigerator Frost in ice tray Explain basic principles of frost formation When ice tray with full of water is put into a freezer compartment the water evaporates If cool air fan operates the moisture attached to the jaw protruded part of ice mold will freeze and form frost If warm water was put into the ice mold the situation will become worse 87 TROUBLE DIAGNOSIS 4 5 Others Problems Checks and Measures The refrigerator case is hot Explain the principles of radiator The radiator pipes are installed in the refrigerator case and partition plate between the refrigerator and the freezer compartment in order to prevent condensation formation Particularly in summer or after installation of refrigerator it may feel hot but it is normal If there is not enough space to dissipate heat it can be hotter due to lack of heat radiation Please install a refrigerato
87. in If the voltage is normal it is OK Replace door switch freezer refrigerator and home bar Replace fan motor Replace relay RY5 amp RY6 or PCB Refer to load driving circuits in circuit explanation Faulty defrost functions Refer to faulty defrost items in trouble diagnosis Refer to trouble diagnosis function SISONDYIA FIINOAL Problems Symptom Causes Checks Measures Remarks Bad cooling Wrong Refrigerator temperature Defective Step Motor Damper Check Step Motor damper motor and reed switch and lead wire are cut Check Step Motor damper part Check if Step Motor damper motor and reed switch lead wire are cut with a tester Reconnect lead wire Refer to Step Motor damper in parts repair guide Replace Step Motor damper or refrigerator control box Assembly Check Step Motor damper Motor driving relayinPCB Refer to Step Motor damper in parts repair guide Replace relay or PCB Refer to single motor damper driving circuits in circuit explanation Foreign materials in Step Motor damper baffles Check Step Motor damper baffle visually Remove foreign materials Ice formation on Step Motor damper baffles Check if Step Motor damper Heater wire is cut with a tester Replace Step Motor damper or refrigerator control Box Assem
88. k on connector Reconnect electric power LCD are off between Main PCB connection from main connection connector and display circuit PCB to display PCB Defective PCB PCB transformer Check resistance of PCB Replace PCB Applicable to transformer winding is cut transformer input and output transformer or PCB model without PCB transformer terminals with a tester dis penser temperature fuse is If resistance is infinity trans burnt out winding is cut DefectivePCB electric Defective regulator IC Check voltage at input output Replace regulator Refer to electric circuit parts 7812 7805 terminals circuit in circuit explanation PCB electric terminal Check fuse in PCB electric Replace PCB fuse fuse is burnt out terminal with a tester STR Parts are Check if STR No 2 and 3 pins Replace parts Applicable to damaged are cut when power is off model with dispenser Abnormal Bad connection Lead Wire connecting Check Lead Wire terminals Reconnect Lead display LCD between Main PCB main and display connecting Main PCB and Wire and directly operation and display circuit cut connector display PCB with a tester connect defective terminal connection is bad contact terminal to Lead Wire Defective LCD Defective LCD Check if all LCD are on when Main PCB Test switch is pressed or when both freezer key and power freezer key are pressed at the same time for more than one second R
89. l Touching other components Freezer compartment terminal Touching evaporator pipe 3 Faulty parts r Transformer 7 Coil contacts cove Welded terminal parts contact cover Compressor 8Bad coil insulation Plate heater Melting fuse Cord heater 7 Pipe damaged Bad sealing Sheath heater Sealing is broken Moisture penetration Moisture penetration ll Connect conduction and non conduction parts and check with tester Conduction NG Resistance 58 TROUBLE DIAGNOSIS CLAIMS CAUSES AND CHECK POINTS HOW TO CHECK 10 Structure appearance and others 1 Door foam m Sag Hinge loose Boltis loosened during transportation Not tightly fastened Screw worn out Weak gasket Adhesion surface adhesion Fixedtape Not well fixed Noise during Hingeinterference Bigger door foam operation Hinge Pin tilted Poor flatness No washer Nogrease Malfunction Not closed Interference between door liner and inner liner Refrigerator Stopper worn out compartment is Bad freezer compartment door opened when freezer assembly compartment is No stopper closed faulty stopper 2 Odor m Temperature of High Faulty damper control refrigerator rr
90. lems Causes Checks Measures Remarks Compressor Faulty PTC Check the resistance If resistance is infinite replace it does not Vlaue is defective with new one operate If itis not infinite it is normal Compressor is frozen If compressor assembly parts are normal capacitor OLP apply power directly to the compressor to force operation Auxiliary winding Main winding Power OLP It starts as soon as it is contacted During forced operation Operates Check other parts Not operate Replace the frozen compressor with new one weld evacuate and recharge refrigerant e Refer to weld repair procedures SISONDVIC 19 2 3 Temperature Rotate rotor manually and check rotation Wire is cut Bad terminal contact Check terminal visually Fan constraint Fan shroud contact Confirm visually Fan icing Confirm visually Maintain clearance and remove ice Repair and or replace shroud if fan is constrained by shroud deformation Problems Causes Checks Measures Remarks High Poor cool air circulation due to faulty Lock Check resistance with a Replace fan motor temperature fan motor tester in the freezer 00 short compartment oo cut Reconnect and reinsert Faulty fan motor due to faulty door switch operation Iced button faulty operation Press button to check
91. n quickly When the engine stops so does the vibration Vibration sound Check the sound whether it comes from the pipes vibration and friction Insert bushing or leave a space between pipes to avoid the noise e Fix the fan blade if it is hitting on the shroud Fix the drip tray if it is loosened E Sound depends the installation location Sound becomes louder if the refrigerator is installed on a wooden floor or near a wooden wall Move it to the another location If the refrigerator is not leveled properly a small vibration can make a loud sound Please adjust the level of the refrigerator 84 TROUBLE DIAGNOSIS Problems Checks and Measures Sounds of water flowing Wi Explain the flow of refrigerant When the refrigerator stops the water flowing sound happens This sound happens when the liquid or vapor refrigerant flows from the evaporator to compressor Click sounds Explain the characteristics of moving parts This noise comes from the MICOM controller s switch on the top of the refrigerator when it is turned on and off Noise of Icemaker operation applicable to model with Icemaker Noise produced by ice dropping and hitting ice bin Noise from motor sounds Hiss Bi Explain the procedure and principles of Icemaker operation Automatic Icemaker repeats the cycle of water supplying gt gt icemaking ice ejection When water is supplied the
92. ned off LCD graphic and back light ON OFF check 20 MICOM FUNCTION 2 17 Test Function 1 The purpose of test function is to check function of the PWB and product and to search for the failure part at the failure status 2 Test button is placed on the main PCB of refrigerator test switch and the test mode will be finished after maximum 2 hours irrespective of test mode and then is reset to the normal status 3 Function adjustment button is not perceived during performance of test mode 4 In finishing test mode always pull the power cord out and then plug in it again for the normal state 5 If nonconforming contents such as sensor failure are found during performance of test mode release the test mode and display the failure code 6 Even if pressing the test button during failure code display test mode will not be performed Mode Operation Contents Remarks Test 1 Press test button once 1 Continuous operation of compressor Freezing fan turns off in strong cold mode 2 Continuous operation of freezing bldc motor door opening high speed RPM and cooling bldc motor 3 Defrost heater turns off 4 Stepping motor damper is completely opened open of baffle 5 Optichil stepping motor damper is completely closed 6 All display LEDs or LCD graphics turn on Test 2 Press test button once at 1 Compressor OFF Return to the normal mode the test mode 1 status 2 Freezing bldc motor and cooling bldc motor wh
93. ompressor operation 1 1 Check the level of the refrigerator 1 2 Check the bushing seat conditions sagging and aging 2 Pipes resonate sound which is connected to the compressor 2 1 Check the level of pipes connected to the compressor and their interference 2 2 Check bushing inserting conditions in pipes 2 3 Touch pipes with hands or screw driver check the change of sound 3 Fan operation sound in the freezer compartment 3 1 Check fan insertion depth and blade damage 3 2 Check the interference with structures 3 3 Check fan motor 3 4 Check fan motor bushing insertion and aging conditions 4 Fan operation sound in the compressor compartment 4 1 Same as fan confirmation in the refrigerator 4 2 Check drip tray leg insertion 4 3 Check the screw fastening conditions at condenser and drip tray 1 Maintain horizontal level 2 Replace bushing and seat if they are sagged and aged 3 Touch the piping at various place along its route Install a damper at the point where your tuch reduces the noise 4 Avoid pipe interference 5 Replace defective fan and fan motor 6 Adjust fan to be in the center of the fan guide 7 Leave a clearance between interfering parts and seal gaps in the structures 8 Reassemble the parts which make sound 9 Leave a clearance if evaporator pipes and suction pipe touch freezer shroud SISONDVIC FIINOAL 69 Pro
94. or Weld 1 and 2 parts by blowing nitrogen to the low pressure side scales inside pipe because of its short welding time KEY POINT Welding without nitrogen blowing produces oxidized scales inside a pipe which affect performance and reliability of a product Weld and 2 parts by blowing nitrogen 0 1 0 2kg cm 2 to high pressure side after Note For other parts nitrogen blowing is not necessary because it does not produce oxidized 3 Replacement of drier Inserting a capillary tube Measure distance with a ruler and put a mark 12 3 0 on the capil mark and weld it KEY POINT Be sure to check the inserted length of capillary tube when it is inserted If inserted too far the capillary tube will be blocked by the filter lary tube Insert tube to the 80 TROUBLE DIAGNOSIS Items Precautions 4 Vacuum degassing Evaporator Suction pipe gt Hot Line Compressor Condenser High Blue pressure 5 If power is applied 6 during vacuum degassing vacuum degassing shall be 2 more effective Pipe Connection Run the compressor Connect the red hose to the high pressure side and the blue hose to the while charging the low pressure side system It is easier and works better Vacuum Sequence Open valves 1 and 2 and evacuate for 40 minutes Close valve 1 5 Refrigerant charging Char
95. or against the wall If the power plug was damaged it could cause fire or electric shock 4 If the wall outlet is overloaded it may cause a fire Please use a dedicated circuit for the refrigerator 5 Please make sure the outlet is properly grounded Particularly in a wet or damp area 6 Use standard electrical components 7 Make sure hooks are correctly engaged Remove dust and foreign materials from the housing and connecting parts 8 Do not fray damage run over kink bend pull out or 10 11 12 13 14 15 twist the power cord Please check for evidence of moisture intrusion in the electrical components Replace the parts or mask with insulation tape if moisture intrusion was confirmed Do not touch the icemaker with hands or tools to confirm the operation of geared motor Do not suggest that customers repair their refrigerator themselves This work requires special tools and knowledge Non professionals could cause fire injury or damage to the product Do not store flammable materials such as ether benzene alcohol chemicals gas or medicine in the refrigerator Do not put anything on top of the refrigerator especially something containing water like a vase Do not put glass bottles with full of water into the freezer The contents will freeze and break the glass bottles When you scrap or discard the refrigerator remove the doors and dispose of it where children are not lik
96. otect The opening time should be reduced to a system opening time Comp within Moisture half of the standards during rain and 10 minutes Penetration rainy seasons the penetration of water Drier within into the pipe is dangerous 20 minutes 2 Welding Nitrogen Weld under To protect Refet to repair note in each part Pressure Nitrogen oxide scale R134a refrigerant is more susceptible to atmosphere formation leaks than R12 and requires more care N2 pressure during welding 0 1 0 2 kg cm 2 Do not apply force to pipes before and after welding to protect pipe from cracking 3 N2 sealed parts Confirm N 2 Confirm air leaking To protect In case of evaporator parts if it doesn t leak sounds when moisture make noise when removing bushing removing bushing penetration cap blow dry airorN 2 gas for more than cap 1 min use the parts Sound usable No sound not usable 4 Refrigeration Evacuation Min More than To remove Cycle time 40 minutes moisture Vacuum Torr Below 0 03 ref Note Only applicable to the model degree equipped with reverse flow protect plate Vacuum EA High and low Vaccum efficiency can be improved by Pressure sides are operating compressor during evacuation evacuated at the same time for models above 200 0 Vacuum EA Use R134a To protect bushing pipes for R12 refrigerant shall piping exclusive mixing of melted when they are used for R134a manifold mineraland refrigerant causes of leak e
97. pply It works when it is in the horizontal conditions If cube mould is full of ice during test function operation ice ejection control and water supply control do not work 3 Ice ejection carries out irrespect of ice formation in the ice making tray if test switch is pressed for more than 0 5 second Water shall be splashed if test switch is pressed before the water in the mould is completely frozen Water shall be supplied while the mould returns to the horizontal conditions after ice ejection Therefore the problems of ice ejection leveling and water supply can be checked by test switch When test function performs normally buzzer sounds and water supply shall carry out Check it for repair if buzzer does not sound 4 When water supply is completed normal cycle works Ice Making gt Ice Ejection Level Return gt Water Supply 5 If ice maker stop switch is set to ON normal cycle operates Ice Making gt Ice Ejection gt Level Return gt Water Supply If it is set to OFF ice making conducts but ice ejection level return and water supply do not work 48 CIRCUIT CIRCUIT DIAGRAM DELUXE PART H BAR HEATER DOOR S W CAPACITOR PART PLUG TYPE COMPRESSOR EARTH PART PILOT VALVE S W PART OPTICHILL ZONE WATER TANK SENSOR ON CIRCUIT DIAGRAMS ARE SUBJECT TO CHANGE IN DIFFERENT LOCALITES AND ACCORDANCE WITH MODEL TYPE N NEUTRAL PWB ASSEMBLY MAIN FUSE PART 1 250 15A 1 0
98. r in a well ventilated place and leave the clearance between refrigerator and wall Small holes in a door liner Explain that the hole is for releasing gas Asmall hole in the door liner is for releasing gas during insulation materials lining work With a releasing hole forming can be easily done Electric bills are too much Explain that the hole is to allow the air to escape when vacuum forming plastic parts and pumping foam insulation into cavities NOTE Holes and releasing gas appear to be very crude and would not be acceptable in a manual There are small holes in the plastic liner of some parts of the refrigerator These holes allow plastic parts to be injection molded and vacuum formed by allowing air bubbles to be expelled They also allow foam insulation to be pumped into cavities where air bubbles may build up Condensation on the inside wall of the refrigerator compartment and the cover of properly vegetable drawer Bi Explain how to store foods Condensation forms when refrigerator is installed at damp area door is frequently opened and wet foods are not stored in the air tight container or wrapped Be sure to store wet foods in airtight containers or securely covered in plastic wrap When is the power connected When should the power be connected You can connect the power immediately after installation However if the refrigerator was laid flat before or during installation you must
99. s function table at the display part of refrigerator the BLDC motor doesn t operate more If you want to operate the BLDC motor turn off and on power resource 2 9 Control of cooling fan motor 1 The cooling fan motor performs ON OFF control by linking with the COMP 2 It controls at the single RPM without varying RPM 3 Failure sensing method is same as in fan motor of freezing fan motor refer to failure diagnosis function table for failure display 2 10 Door opening alarm 1 Buzzer generates alarm sound if doors are not closed even when more than a minute consecutively has passed with doors of freezing cold storage room or home bar opened 2 Buzzer rings three times in the interval of 0 5 second after the first one minute has passed after doors are opened and then repeats three times of On Off alarm in the cycle of every 30 seconds 3 If all the doors of freezing cold storage room or home bar are closed during door open alarm alarm is immediately released Doors of freezing cold storage room Closing Opening Closing Opening Closing or home bar 3 Times 3 Times 3 Times 3 Times BUZZER gt bd gt lt gt Within minute 30 30 30 minute seconds seconds seconds 2 11 Ringing of button selection buzzer 1 If pressing the front display button Ding sound rings 16 2 12 Ringing of compulsory operation compul
100. shed Ice 15 automatically selected when power is initially applied or reapplied after power cut 3 When dispenser selection switch is continuously pressed light is on in the following sequence Water gt Cube Ice Crushed Ice 4 Lamp is on when dispenser rubber button is pressed and vice versa 5 When dispenser crushed ice rubber button is pressed dispenser solenoid and geared motor work so that crushed ice can be dispensed if there is ice in the ice bank 6 When dispenser cube ice rubber button is pressed dispenser solenoid cube ice solenoid and geared motor work so that cube ice can be dispensed if there is ice in the ice bank 7 When dispenser water rubber button is pressed water valve opens and water is supplied if water valve is normally installed on the right side of the machine room 8 Ice and water are not available when freezer door is open 42 ICE MAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR 2 Function of Ice Maker 2 1 Initial Control Function 1 When power is initially applied or reapplied after power cut it detects level of ice maker cube mould after completion of MICOM initialization The detecting lever moves up and down 2 The level of ice maker cube mould is judged by output signal high and low signal of Hall IC Make the cube mould to be horizontal by rotating ice ejection motor in normal or reverse direction so that High Low signal can be applied to MICOM Pin No 42 3
101. sory frost removal buzzer 1 If pressing the test button in the main PCB Phi sound rings 2 In selecting compulsory operation alarm sound is repeated and completed in the cycle of On for 0 2 second and Off for 1 8 second three times 3 In selecting compulsory frost removal alarm sound is repeated and completed in the cycle of On for 0 2 second Off for 0 2 second On for 0 2 second and Off for 1 4 second three times 2 13 Frost removal function 1 Frost removal is performed whenever total operation time of compressor becomes 7 7 5 hour 2 In providing initial power or returning power failure frost removal starts whenever total operation time of compressor becomes 4 4 5 hour 3 Frost removal is completed if temperature of a frost removal sensor becomes more than 5 C after starting frost removal Poor frost removal is not displaced if it does not arrive at 5 C even if two hours have passed after starting frost removal 4 No removal is done if frost removal sensor becomes poor Snapping or short circuit 2 14 Refrigerator room lamp automatically off Refrigerator room lamp turn on and off by refrigerator door switch f refrigerator room lamp continuously turns on more than 7 minutes the refrigerator room lamp turns off automatically by compulsion 447 2 15 Sequential operation of built in product Built in products such as compressor frost removal heater freezing room
102. ss 60 Hz OV OFF 5V oa EXPLANATION FOR CIRCUIT 144007 25 i 7 RUNNING CAPACITOR RY1 KID65003AF 1 ALE15B12 1 ASSY 16 lt 1 4 R DOOR SIW gt R LAMP DH1 Q ALE1SB12 3 e HIBAR P DOOR SW LS lt RY3 CON2 ALD112 PIPE HEATER 7 E 4 14 lt 3 5 DISP HEATER ALE15812 oo exei UU 5 FUSE MELTING 1 1 A R 72 d DEF HEATER RYS 3 1212812 1 a I RYG PF 11 EO KE E Eis F DOOR CON3 J SWITCH 9 dr ZE Ee AUGER MOTOR da ALD112 4 Fr 7 SOLENOID 1 1 DISPENSER LEVER SW CUBE nf 9 See EO In i ICE i 5 ga 1 KID65003AF y 1 10 RYS ALD112 b eo WATER J iin i __ PLOT _ J deat SOLENOID VALVE RY11 ARP CON4 ALD112 9 o T SOLENOID 0 1uF 120 i DISPE
103. ster oils Pipe EA Use R134a To protect coupler cxclusive R12 Refri gerant mixing Outlet R134a exclusive Socket Plug R134a exclusive 5 Refrigerant weighing EA Use R134a Do not mix Do not weigh the refrigerant at too hot or exclusively with R12 too cold an area 25 C 77 F is adequate Weighing refrigerant Use copper charging canister allowance 5g Socket 2SV Plug 2PV R134a Note Winter 5g Note Do not burn O ring rubber during Summer 5g welding 6 Drier replacement Use R134a exclusively To remove for R134a refrigerator the moisture Replace drier whenever from pipe repairing refrigerator cycle piping 7 Leak check Do not use soapy Detect Check oil leak at refrigerant leak area water for check refrigerant Use electronic leak detector if oil leak is It may be sucked leakarea inot found into the pipe The electronic leak detector is very sensitive to halogen gas in the air It also can detect R141b in urethane Please practice therefore many times before use 77 TROUBLE DIAGNOSIS 3 2 Summary Of Heavy Repair Process Contents Tools Trouble diagnosis Cut charging pipe ends and discharge refrigerant from drier and compressor Filter side cutters Parts replacement welding Use R134a and refrigerant for compressor and drier Confirm N 2 sealing and packing conditions before use Use good one for welding and assembly Weld under nitrogen
104. te when power is interrupted or restored A LOW signal applied to the reset terminal for 10 ms causes the MICOM to reset itself During normal operation the voltage at the reset terminal is 5 Vdc If the reset fails the MICOM will not operate 1 9 x 29 4 kiA7042 5 cca 104 104 T 1 4 Load dispenser operation door opening circuit 1 LOAD DRIVING CIRCUIT MICOM The fan operates at the regular speed even if the door of the refrigerator or freezer is opened When the doors are closed the fan reverts to its original speed A and D of door switch for the freezer or refrigerator are connected to the door open sensing circuit in paralle toward both ends of switch to determine door open at MICOM In the TEST mode the fan will stop if any door is opened It will resume operation when the door is closed Frost Removal AC Converting Refrigerator Dispensor T f Load C Gazi Heater Relay LAMP Heater Measuring part IC6 IC6 16 IC6 13 IC6 12 IC6 15 IC6 14 ON Within 1 V Status OFF 12V 1 Check load driving status WATER VALVE vpe of Load GEARED SOLENOID SOLENOID yP MOTOR CUBE DISPENSER WATER Measuring part IC6 11 IC6 10 IC7 15 IC7 13 Within 1 V Status OFF 12V 2 Lever Switch sensing circuit Measuring part IC1 Micom No 16 Lever S W 5V On Pre
105. ter pressure If ice cube is too small increase the water supplying time This happens when too small water is supplied into the ice tray If ice cube sticks together decrease the water supplying time This happens when too much water is supplied into the ice tray IL I o Caution When adjusting the amount of water supplied adjust step by step Otherwise the water may spill over Switch ON Switch OFF gt Ga et 1 27 wa Optimum level 2 M rid gt 2 MICOM FUNCTION 1 Monitor Panel ROON 4 Ga be E MONTH ICE PLUS DISPENSER FREEZER REFRIGERATOR LIGHT FILTER ALARM LOCK 35ECS Ice Plus Alarm button and function selection button Lock button Dispenser selection Lamp On Off button button Filter status display RESET button Temperature adjustment button Temperature adjustment button for freezer compartment for refrigerator compartment 10 MICOM FUNCTION 1 3 Display Second Function U dk EGE bi Bau OO d DD de NN b ETA HOLD ZE secs ME i CEU ayes ICE PLUS JETFRZ DISPENSER FREEZER REFRIGERATOR FILTER LIGHT LOCK Buzzer sound ____ 7777 wet Exhibition Mode Display Power Change Display Degree from saving Mode Fahrenheit to Centigrade Mode 1 Buzzer sound mute Mode The buzzer sound is set to OFF It activates by sounding t
106. the temperature control button at strong position If you adjust the button in the freezer compartment as well the refrigeration is stronger than adjusting refrigerator only not frozen but defrosted The food in the chilled drawer 15 Bi The chilled drawer does not freeze food Use chilled drawer for storing fresh meat or fish for short periods For storing for along periods or freezing food use a freezer compartment It is normal that frozen foods thaw above the freezing temperature in the chilled drawer Refrigerator water is not cool Check the water storage location If water is kept in the door rack move it to a refrigerator shelf It will then become cooler Ice cream softens Explain the characteristics of ice cream The freezing point of ice cream is below 15 C 5 F Therefore ice cream may melt if it is stored in the door rack Store ice cream in a cold place or set the temperature control button of a freezer at strong position Refrigeration is too strong E Check the position of temperature control button Check if refrigeration is strong in whole area of the refrigerator or partly near the outlet of the cooling air If it is strong in whole area set the control button at weak If it is strong only near the outlet of cool air keep food especially damp foods and easily frozen foods away from the outlet Vegetables are frozen Check the vegetables storage If ve
107. tics table Measuring Temperature C Freezing Sensor Egia Sakea Frost removal sensor Outside sensor 20 C 22 3 77 15 16 9 60kQ 15 C 13 0 kQ 473kQ 5 C 10 1 38 4k Q 0 C 7 8 kQ 30kQ 5 C 6 2 KQ 241kQ 10 C 4 9 KQ 19 5 Q 15 3 9 15 9 20 3 1 13 25 2 5 30 2 0 kQ 8 9kQ 40 C 1 4 kQ 6 2kQ 50 C 0 8 43kQ gt Resistance value allowance of sensor is 5 p When measuring the resistance value of the sensor allow the temperature of that sensor to stabilize for at least 3 minutes before measuring This delay is necessary because of the sense speed relationship gt Use a digital tester to measure the resistance An analog tester has to great a margin of error b Resistance of the cold storage sensor 1 and 2 shall be measured with a digital tester after separating CON8 of the PWB ASSEMBLY and the MAIN part p gt Resistance of the freezing sensor shall be measured with a digital tester after separating of the PWB ASSEMBLY and the MAIN part 34 EXPLANATION FOR CIRCUIT om 1 OO OO OOG OO OO OO 35 EXPLANATION FOR MICOM CIRCUIT
108. time passes ICE PLUS 2 4 Dispenser Light Dispenser switch or dispenser light button turn the dispenser light in the dispenser on and off dispenser light Function is repeated following below whenever pressing FILTER RESET LIGHT button If dispenser light continuously turns on more than 7 minutes with dispenser light button the dispenser light turns off automatically by compulsion Dispenser light ON OFF LED 14 FUNCTION 2 5 ICE PLUS 1 ICE PLUS is function to improve cooling speed of the freezing room by consecutively operating compressors freezing room fan ICE PLUS is released if power failure occurs and then returns to the original status Temperature setting is not changed even if selecting the ICE PLUS The change of temperature setting at the freezing room or the cold storage room is allowed with ICE PLUS selected and prrocessed The cold storage room operates the status currently set with ICE PLUS selected and procesed If selecting the ICE PLUS the ICE PLUS function is released after continuously operating compressor and freezing room fan If frost removal starting time is arrived during ICE PLUS ICE PLUS operation is done only for the remaining time after completion of frost removal when the ICE PLUS operation time passes 90 minutes If passing 90 minutes ICE PLUS operation is done only for 2 hours after completion of frost removal
109. tle sound Check the sound by opening and closing the refrigerator or freezer doors Broaden the cap of discharge hose for defrosting in the compressor compartment Seal the gap with sealant between out and inner cases of hinge in door SISONDYIA LZ 2 8 Odor odors plastic bowl and bag It happens in the new refrigerator Persuade customers not to use plastic bag or wraps with wet food or odorous foods Problems Causes Checks Measures Remarks Food Odor Food garlic kimchi etc Check the food is not wrapped Dry the deodorizer in a sunny place Check the shelves or inner with adequate ventilation wall are stained with food juice Store the food in the closed Be sure food is securely covered container instead of vinyl wraps with plastic wrap Clean the refrigerator and set Chedk food cleanliness buttonat strong Plastic Odor Odors of mixed food and plastic Check wet food is wrapped with Clean the refrigerator Odor from the deodorizer Odor from the old deodorizer Check the deodorizer odors Dry the deodorizer with dryer and Remove and replace the deodorants then in the shiny and windy place Deodorizer option SISONDVIC F1IINOAL CL 2 9 Micom Problems Symptom Causes Checks Measures Remarks Bad PCB All display Bad connection Bad connector Visual chec
110. tools and store them in a clean tool box or in their place Copper brush Rag Tool box Transportation installation Installation should be conducted in accordance with the standard installation procedure Leave space of more than 5 cm 2 inches from the wall for compressor compartment cooling fan mounted model 78 TROUBLE DIAGNOSIS 3 3 Precautions During Heavy Repair Items Precautions 1 Use of tools 1 Use special parts and tools for R134a 2 Recovery of refrigerant 1 Continue to recover the refrigerant for more than 5 minutes after turning the refrigerator off 2 Install a piercing type valve on the high pressure line drier side Then use the appropriate recovery equipment to recover the refrigerant from the system When the refrigerant has been recovered install a piercing type valve on the low pressure side IT IS IMPORTANT TO OPEN THE SYSTEM IN THIS ORDER TO KEEP THE OIL FROM BEING FORCED OUT The use of piercing type valves will allow future servicing and eliminates the possibility of a defective pinch off Evaporator Compressor Low pressure side Condenser 1 High pressure side 3 Replacement of drier 1 Be sure to replace drier with R134a only when repairing pipes and injecting refrigerant 4 Nitrogen blowing welding 1 Use pressurized nitrogen to prevent oxidation inside the piping Nitrogen pressure 0 1 0 2 k
111. torate Storehotfood Store too much at once Door open Packages block air flow 1 Faulty temperature sensor in freezer or refrigerator compartment r Faulty contact Faulty temperature characteristics 2 Refrigeration load is too much Food Toomuchfood Hotfood Frequent opening and closing Cool air leak Poor door close Partly opens 3 Poor insulation 4 Bad radiation High ambient temperature Space 5 secluded 5 Refrigerant leak 6 Inadequate of refrigerant 7 Weak compressor discharging power Differentrating Small capacity 8 Fan does not work 9 Button issetat strong 1 Ice in freeezer compartment r External air inflow Bushing installed incorrectly r Door opens Weak door closing power butnotdoses Stopper malfunction Door sag Foodhinders door dosing Gap around gasket Contraction distortion loose door twisted corner not fully inserted Food vapor Storing hot food Unsealed food 2 Condensation in the refrigerator compartment r Door opens Insufficient closing butnotdoses Door sag Food hinders door closing Gasket gap 3 Condensation on liner foam Cool air leak Notfully filled rr Top table part and transmitted Out plate Ref Lower part Flange Not sealed Gasket gap E Inspect p
112. water supply valve in the machine room makes sounds like Hiss and water flowing also makes sound When water freezes clicking sounds are heard When ice is being ejected sounds like Hiss produced by a motor to rotate an ice tray and ice dropping and hitting ice bin sounds are also heard Noise when supplying water Explain the principles of water supplied to dispenser When the water supply button in the dispenser is pressed the water supply valve in the compressor compartment opens and let the water flow to the water tank in the lower part of the refrigerator compartment The water is dispensed by this pressure When this happens motor sound and water flowing sound are heard Noise when supplying ice Bi Explain the principles of ice supply and procedure of crushed icemaking in a dispenser When ice cube button is pressed ice stored in the ice bin is moved by an auger and dispensed If crushed ice button is pressed the ice cube is crushed When this happens ice crushing and hitting ice bin sounds are heard 85 TROUBLE DIAGNOSIS 4 2 Measures for Symptoms on Temperature Problems Checks and Measures Refrigeration is weak B Check temperature set the temperature control knob Refrigerator is generally delivered with the button set at normal use MID But customer can adjust the temperature set depending on their habit and taste If you feel the refrigeration is weak then set

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