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REFRIGERATOR SERVICE MANUAL

1. LINE CON3 CON4 l Tw NEUTRAL 5812 AM IRT SENSOR Cue PWB PCB ASSEMBLY MAIN d GN Bol 0 5 5 7 ev CON2 DOOR Sw 9 12 9 10 5 BK BK 1 1 1 5 P 1 1 z lt 86 gk 95 gil 1 55 E 52 Ziji eiit 81481 Tz COMPRESSOR BEN 71 8 1 s START OPTION OMO LG COMP MATSUSHITA COMP EMBRACO COMP EH THE PLUG TYPE Cr Cs COMPRESSOR COMPRESSOR EARTH PART REACTOR CAPACITOR PF ON CIRCUIT DIAGRAM ARE SUBJECTED TO CHANGE IN DIFFERENT LOCALITIES AND ACCORDANCE WITH MODEL TYPE WHEN STARTING CAPACITOR IS NOT USED NO3 2 4 1 OF PTC STARTER ARE CONNECTED INTERNALLY BK BLACK BN BROWN RD RED BO BRIGHT ORANGE YL YELLOW GN GREEN BL BLUE PR PURPLE GY GRAY SB SKY BLUE WH WHITE NOTE 1 This is a basic diagram and specifications vary in different localities 23 6 TROUBLESHOOTING 6 1 COMPRESSOR AND ELECTRIC COMPONENTS Power Source Remove the PTC Starter Rating Voltage YES 10 from the Compressor and measure the voltage between Terminal C of Compressor and Terminals 5 or 6 of PTC Check connection co
2. 55 52 5v it 4uF sv t T Re RS u 2 1 TMPB7CBA1N AIN10 P70 t3 11 PS7 AIN7 AIN12 P72 pes Anus 22 3 W 1 AIN13 P73 P65 AINS Re 1 R SENSOR AIN14 P74 PS4 AIN4 My 1 1 AINIS P75 P63_AIN3 I AIN16 P76 P62_AIN2 w 1 AINI7 P77 DOOR S W if m Poo P60_AINO O V LED vass P54 HPWMT EM P53 HEWMO Ps2 PW PD0 P51 INT4 TC4 PS0 INT3 TC3 INTO_P10 247 302 I INTLPAL 812 INT2 TCi P12 00 213 244 501 14 243 511 TC2 P45 Pa2 SCKT P16 P40 INTS STOP_P20 TEST XTIN P24 RESET u ja 53 9 EXPLODED VIEW amp REPLACEMENT PARTS LIST w The parts of refrigerator and the shape of each part are subject to change in different localities Capacitors and fuse are optional parts 9 1
3. 1T2 T3T4 T5 T PRIWHIVE ov BL CONS RT SENSOR POWER SUPPLY R SENSOR CORD CON RESCUE PWB PCB ASSEMBLY MAIN DOOR SW x VLED proin HOME BAR MODELS MODELS ONLY ONLY 12 VEGETABLE BK LED BK 1 1 151 1 1 2 88 gx 52 8 COMPRESSOR EN s 1 51 START OPTION ERSTER LG COMP MATSUSHITA COMP EMBRACO COMP rn THE PLUG TYPE Cr Cs COMPRESSOR COMPRESSOR EARTH PART REACTOR CAPACITOR PF V LED PART H BAR HEATER PART ON CIRCUIT DIAGRAM ARE SUBJECTED TO CHANGE IN DIFFERENT LOCALITIES AND ACCORDANCE WITH MODEL TYPE WHEN STARTING CAPACITOR IS NOT USED NO3 2 4 1 OF PTC STARTER ARE CONNECTED INTERNALLY BK BLACK BN BROWN RD RED BO BRIGHT ORANGE YL YELLOW GN GREEN BL BLUE PR PURPLE GY GRAY SB SKY BLUE WH WHITE CIRCUIT DIAGRAM PWB PCB ASSEMBLY DISPLAY LED MODULE 11213141516 eN Rb 8t CON101 R SENSOR BN RD BO Y WH 74444444 BL PR BN BN RD BO YL BL PR
4. Base Cover NOTE This guide covers several different models The refrigerator you have purchased may have some or all of the features shown above 10 p GR B652Y B B712Y B FREEZER COMPARTMENT Lam EET In Door Ice Shelf Maker Freezer Temperature Control Dial ne Freezer Door Rack REFRIGERATOR E 5 COMPARTMENT 2 Deodorizer Optional Water Tank Shelves Optional Lamp Convertible Room N Refrigerator Door Rack Vegetable Drawer AA 6660580666 Vita Light Levelling Screw Base Cover NOTE This guide covers several different models The refrigerator you have purchased may have some or all of the features shown above 11 GR B652Y S B712Y S FREEZER COMPARTMENT Lamp Shelf Freezer Temperature Control Dial REFRIGERATOR COMPARTMENT Deodorizer Optional Shelves Optional Lamp Convertible Room Vegetable Drawer Vitamin Kit optional ER ES 0000000000000000000000000000 mun
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6. In Door Ice Maker Freezer Door Rack Water Tank Refrigerator Door Rack Levelling Screw Base Cover NOTE This guide covers several different models The refrigerator you have purchased may have some or all of the features shown above 12 p GR B652Y P B712Y P FREEZER Twigting Ice Serve COMPARTMENT Lamp Shelf Freezer Temperature Control Dial Freezer Door Rack REFRIGERATOR oen em COMPARTMENT Co Deodorizer Optional m Water Tank Shelves Optional Lamp Convertible Room wa Refrigerator Door Rack Vegetable Drawer LL Vitamin Kit optional Levelling Screw Base Cover NOTE This guide covers several different models The refrigerator you have purchased may have some or all of the features shown above 13 gt GR B652Y C B712Y C FREEZER COMPARTMENT Lamp Freezer Temperature Control Dial Twigting Ice Serve ___ Freezer Door Rack Shelf REFRIGERATOR COMPARTMENT 26 Deodorizer I Optional Egg Storage Rack Shelves Optional Lamp Convertibl
7. GR B652 712Y GR M652 712Y p GR B652 712Y P P No MFL62196001 NOV 2006 Printed in Korea
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9. ITEMS ERLE emesszrorsesvs FREEZER 151 mi NET rou REFRIGERATOR 394 ane TOTAL 545 DIMENSIONS mm 860 W X 730 5 D X 1794 H 860 W X 730 5 D X 1794 H NET WEIGHT kg 95 94 FREEZER Knob Dial CONTROL REFRIGERATOR Micom Control DEFROSTING SYSTEM Full Automatic Heater Defrost OUT CASE Pre Coated Metal INNER CASE ABS INSULATION Cyclo Pentane Foam FREEZER 1EA SHELF REFRIGERATOR 2 EA 3EA Option VEGETABLE TRAY Drawer Type EGG TRAY 1 Piece ICE TRAY 2 Pieces ICE BANK 1 Piece COMPRESSOR P T C Starting Type EVAPORATOR Fin Tube Type CONDENSER Wire Condenser Screw Condenser REFRIGERANT R134a 140g R600a 699 DEFROSTING DEVICE Heater 2 PARTS IDENTIFICATION 2 1 FEATURE CHART gt GR M652Y A M712Y A GR M652Y X M712Y X FREEZER COMPARTMENT Lamp Shelf Freezer Temperature Control Dial REFRIGERATOR COMPARTMENT Deodorizer Optional Shelves Optional Z Lamp Convertible Room Vegetable Drawer 3 Vita Light NOTE In Door Ice Maker Freezer Door Rack Egg Storage Rack Dairy Corner Refrigerator Door Rack Levelling Screw Vegetable Partitioner
10. Pe 97 5 25 DOOR S W F Defrosting Fan Motor Fan Motor Home Bar Load Type COMP Heater Lamp HIGHRPM LowRPM Heater R Lamp Measurement Location IC6 NO 16 NO 12 NO 10 NO 15 NO 14 NO 13 NO 11 d ON 1V or below Condition OFF 12V 38 When the door of the freezer refrigerator is left open for 7 minutes or longer the lamp of the freezer refrigerator turns off automatically 2 Buzzer Drive Condition Check No DVO PI3 BUZZER BM 20K 1 RB MICOMI 9 2 ue PPG PI4 E 5 Condition Tone Beep when the button Alarm for open door OFF easure i i m nt Locatio on the display is pushed beep beep beep 015 0 5s 055 055 ay 2 OV IC1 1 9 Beep 3 Open Door Detection Circuit Check CON4 Leg 7 l5 9 F R DOOR S W Ste 8 38 SH ll N Measurement Freezer Location PIN NO 34 Refrigerat Door Closed OV Open 5V 39 7 2 5 TEMPERATURE SENSOR CIRCUIT The following temperature sensor circuit consists of a sensor to detect the outside ambient temperature sensor in refrigerator compartment to detect freezer amp refrigerator temp The status of each sensor whether open or sh
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12. Figure 11 3 Remove the Grille by pulling it out 4 Pull out the Shroud and remove the Fan Motor Assy by loosening 2 screws 5 Pull out the fan and separate the Fan Motor Brackets and the Guide Fan SHROUD FAN MOTOR COVER GRILL FAN RILLE Figure 12 19 3 4 DEF CONTROL ASSY Def control ASM consists of Defrost Sensor and FUSE M Defrost Sensor functions to defrost automatically and it is attached to the Evaporator and the metal side of the case senses Temp Fuse M is a kind of safety device for preventing overheating of the Heater when defrosting At the temperature of 77 C it stops the emission of TEMP from the Defrost Heater 1 Pull out the shroud F after removing the Grille Fan Figure 13 2 Separate the connectors connected with the Def Control ASM and replace the Def Control ASM after cutting the Tie Wrap Figure 14 SHROUD F DEF CONTROL ASM a HNN Figure 13 Figure 14 3 5 LAMP FREEZER ROOM LAMP REFRIGERATOR ROOM LAMP Figure 16 3 5 1 Freezer room lamp 1 Unplug the power cord from the outlet 2 Remove the room lamp lid by loosening 1screw and take down while pulling it forward with both hands as shown in figure 3 Remove the lamp by turning it counterclockwise 3 5 2 Refrigerator room lamp 1 Unplug the power cord from the outlet 2 Remove refrigerator shelves 3 Remove the room lamp lid by pulling it forward 4 Mak
13. poor PWB three times forced DEFROSTING TEMPERATURE FUSE disconnection Replace TEMPERATURE FUSE Connection is poor DEF SENSOR is poor HEATER RELAY is poor Certify EVA connection and wire of MAIN PWB CONNECTOR Replace DEF SENSOR Replace RY5 of MAIN PWB 2 DRAIN PIPE blocking Certify DRAIN PIPE DRAIN PIPE blocking Remove ice and impurities Certify HEATER PLATE resistance 3 Remain ice at DEFROSTING Certify the attaching of DEF SENSOR Attaching is poor Reassemble DEF SENSOR Certify the attaching state gap of FREEZER REFRIGERATOR DOOR DOOR sticking is poor Reassemble DOOR Replace GASKET 45 7 5 MAIN PWB ASS Y AND PARTS LIST 7 5 1 MAIN PWB ASS Y TRANS KEY DISPLAY goo fo se lt gt R51 Fo 4o po 4 E HAMP 2 AW FO 5 Ree o 0 owe To fo s oooloooo oooodoooo oooo doooo oS owe fo O R22 W 7 4 gt aa STRESS STICKER V2 A082 23603 0121 8 RY4 RY 8 5 Ar 7 Esssz7883 O
14. During normal operation of Compressor Motor PTC elements generate heat continuously Therefore if PTC isn t cooled for a while after power off Motor can t operate again 4 2 5 Relation of PTC Starter and OLP 1 If power off during operation of Compressor and power on before PTC is cooled instant shut off within 2 min or reconnect a power plug due to misconnecting PTC isn t cooled and a resistance value grows As a result current can t flow to the sub coil and Motor can t operate and OLP operates by flowing over current in only main coil 2 While the OLP repeats on and off operation about 3 5 times PTC is cooled and Compressor Motor performs normal operation If OLP doesn t operate when PTC is not cooled Compressor Motor is worn away and causes circuitshort and fire Therefore use a proper fixed OLP without fail 4 2 6 Note to Use PTC Starter 1 Be careful not to allow over voltage and over current 2 No Strike Don t apply a forcible power or strike 3 Keep apart from any liquid If liquid such as oil or water inflows into PTC PTC materials it may break due to insulation breakdown of material itself 4 Don t change PTC at your convenience Don t disassemble PTC and mold If damaging to outside of PTC starter resistance value alters and poor starting of compressor motor may cause 5 Use a properly fixed PTC 21 4 3 OLP OVER LOAD PROTECTOR 4 3 1 Definition of OLP 1 OLP OVER LOAD PROTEC
15. Optional Base Cover This guide covers several different models The refrigerator you have purchased may have some or all of the features shown above p GR M652Y Y M712Y Y FREEZER COMPARTMENT Lamp Shelf Freezer Temperature Control Dial REFRIGERATOR COMPARTMENT Deodorizer Optional Shelves Optional Lamp Convertible Room Vegetable Drawer Vitamin Kit optional In Door Ice Maker Freezer Door Rack Egg Storage Rack Dairy Corner Refrigerator Door Rack Levelling Screw Base Cover NOTE This guide covers several different models The refrigerator you have purchased may have some or all of the features shown above GR B652Y Y B712Y Y FREEZER COMPARTMENT Lamp In Door Ice Shelf j Freezer Temperature Control Dial Freezer Door Rack REFRIGERATOR COMPARTMENT Deodorizer __ Optional eee Shelves Optional La m p Convertible Room Refrigerator Door mall Rack Vegetable Drawer Vitamin Kit optional Levelling Screw Base Cover NOTE
16. be sure reset by unplugging and then plugging in the appliance 5 If an error such as a sensor failure is detected while in the test mode the test mode is cleared and the error code is displayed 6 While an error code is displayed the test mode will not be activated even if the test button is pushed Mode Manipulation Contents Remark TEST 1 Push the test button 1 Continuous operation of the comp once 2 Continuous operation of the freezer fan 3 Defrosting heater OFF 4 Every display LED ON 5 F lamp can be switch on off by door open close TEST2 Push the test button 1 Comp OFF Reset if the temp of once while in the TEST 2 Freezer fan OFF the defrosting sensor MODE 1 3 Defrosting heater ON is 13 C or above 4 Every display LED OFF except the refrigerator temp status keys displaying 2 5 H lamp can be switch on off by door open close for 5 sec s Reset Push the test button Reset to the default setting The compressor will once while in the TEST start in 7 minute delay MODE 2 LED Check Mode When the refrigerator temp control button and the Super Cool button are pushed and held together for 1 sec or longer every LED on the display turns on simultaneously When the buttons are released the previous mode is restored FAN RPM VARIETY CHECK Press super cool button and the refrigerator temp control button are pushed and held together for 1 sec or longer FAN RPM is reversed for 30 second HIGH LOW an
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18. 3 The assembly is made in reverse order 1 2 2 4 HOW TO DISASSEMBLE AND ASSEMBLE HANDLE 1 Disassemble the handle deco and handle base 2 Assemble the new handle deco and handle base 1 Remove handle deco by pulling it out with tooling 1 Assemble new handle base by tightening 3 screws Freezer handle Refrigerator handle Upper 1 screw Lower 2 screws 2 Remove handle base by loosening 3 screws 2 Assemble handle deco by pushing it after inserting upper and lower part first Upper 1 screw Lower 2 screws 18 3 DISASSEMBLY 3 1 DOOR e Freezer Door 1 Remove the hinge cover by loosening 1 screw and pulling it upwards 2 Loosen hexagonal bolts fixing the upper hinge to the body and lift the freezer door Q gt 2 HINGE COVER BOLT HINGE Figure 6 3 Pull out the door gasket to remove from the door foam Ass y Figure 7 e Refrigerator Door 1 Loosen hexagonal bolts fixing the lower hinge to the body to remove the refrigerator door only LOWER HINGE Figure 8 2 Pull out the door gasket to remove from the door foam Ass y 3 2 DOOR SWITCH 1 To remove the door switch pull out it with a type driver as shown in figure 9 2 Disconnect the lead wire from the switch Figure 9 3 3 FAN AND FAN MOTOR 1 Remove the freezer shelf 2 Remove the Cover Lamp F by loosening 1 screw fixed to ceiling of Inner Liner
19. 5 CUT CUT 2 C CUT amp CUT 6 0 C d CUT CUT 5 0 C CUT CUT amp CUT 1 C 47 CUT CUT CUT 1 C d 4 0 FACTORY The above OPTION circuit is to compensate refrigerator temperature by simply cutting during service 41 7 2 8 KEY BUTTON INPUT amp DISPLAY LIGHT ON CIRCUIT p The circuit shown above is to determine whether a function control key on the operation display is pushed and to turn on the corresponding function indication LED LED Module The drive type is the scan type CC19 yp 0 1uF KIDB5003A UN CONS 3 1 11 our Ho 2 10 siz 5 ing outs H 200 3 9 6 ERIS ours 88 v 200 4 8 sor 4 oun EX 200 5 7 ins ours FA Hm our PR Hm our H M54563FP 6 6 7 5 pas pas 8 9 3 27 m 11 1 mb a 27K KTC3198 42 7 3 RESISTANCE SPECIFICATION OF SENSOR TEMPERATURE SENSOR RESISTANCE OF FREEZER RESISTANCE OF REFRIGERATOR SENSOR DEFROST SENSOR 20 C 22 3kQ 15 16 90 6010 10 C 13 0kQ 47 3kQ 5 10 1kQ 38 4 0 C 7 8 Q 30kQ 5 6 2k
20. Be careful that dust humidity and flux due to welding don t inflow in Compressor inside in replacing Compressor Dust humidity and flux due to welding which inflows to Cylinder may cause lock and noise 4 2 PTC STARTER 4 2 1 Composition of PTC Starter 1 PTC Positive Temperature Coefficient is no contact semiconductor starting device which uses ceramic material and the material consists of BaTiOs 2 The higher the temperature is the higher resistance value becomes These features are used as starting device of Motor 4 2 2 Role of PTC Starter 1 PTC is attached to Hermetic Compressor used for Refrigerator Show Case and starts Motor 2 Compressor for household refrigerator applies singlephase induction Motor For normal operation of single phase induction motor in the starting operation flows in both main coil and subcoil After the starting is over the current is cut off in subcoil The proper features of PTC play the above all roles So PTC is used as a starting device of motor 4 2 3 PTC Applied Circuit Diagram e According to Starting Method of Motor OVERLOAD PROTECTOR ee COMPRESSOR PTC MOTOR M 5 2 STARTER TERMINAL RSIR Figure 20 4 2 4 Motor Restarting and PTC Cooling 1 For restarting after power off during normal Compressor Motor operation plug the power cord after 5 min for pressure balance of Refrigerating Cycle and PTC cooling 2
21. Super Cool mode will be cleared When the Defrosting mode starts while in the Super Cool mode defrosting is performed After that the Super Cool mode resumes for the remaining time When the Super Cool button is pushed while in the Defrosting mode the Super Cool mode starts in 7 minutes after the completion of the defrosting even though the Super Cool LED turns on If a power failure occurs while in the Super Cool mode the Super Cool mode will be cancelled when the power is restored If the Super Cool mode is selected when it has not passed 7 minutes since the comp stopped the comp will start running after the remaining time elapses In Super Cool mode Freezer fan motor operates with High speed RPM 3 CONTROL OF VARIABLE SPEED FAN IN THE FREEZER COMPARTMENT Fan motor in the freezer compartment shall change from standard to high speed rpm in order to increase cooling speed and load corresponding speed Hign speed rpm is only used for the initial power application super cool mode and load corresponding operation But standard rpm is used in the general working conditions When the door of freezer room or refrigerator room is opened the FAN MOTOR is stoped immediately then when the door is closed the FAN MOTOR is operated 7 1 4 ALARM FOR OPEN DOOR 15 2 This feature is to alarm by the buzzer when the door of the freezer or the refrigerator is not closed in 1 minute after it is opened In
22. This guide covers several different models The refrigerator you have purchased may have some or all of the features shown above p GR M652Y Q M712Y Q FREEZER COMPARTMENT Twigting Ice Serve Lamp Shelf Freezer Temperature Control Dial Freezer Door Rack REFRIGERATOR Deodorizer m Egg Storage Rack Optional 58 9 AU Shelves Dairy Corner Optional gt Lamp 7 ACE Convertible Room Refrigerator Door BEER Rack Vegetable Drawer QS Vitamin Kit optional Levelling Screw Base Cover NOTE This guide covers several different models The refrigerator you have purchased may have some or all of the features shown above gt GR B652Y Q B712Y Q FREEZER COMPARTMENT Twigting Ice Serve Lamp Shelf H ug mmm Freezer Temperature Conirol Dial Freezer Door Rack REFRIGERATOR COMPARTMENT Deodorizer m Optional Shelves Optional gt Lamp Convertible Room Refrigerator Door 27 Vegetable Drawer SS Vitamin Kit optional Levelling Screw
23. position Foods in the Refrigerator are frozen Are foods placed in cooling air outlet Check if the Display LED is set to 0 1 15 the ambient temperature below 5 C Place foods in high temperature section Front Part Set the Display LED to 3 Set the Display LED to 5 6 Dew or ice forms in the chamber of the set 15 watery foods kept Check if putting in hot foods Did you open the door of the set too often or check if the door is closed up Seal up watery foods with wrap Put in foods after they get cold Don t open the door too often and close it firmly Dew forms in the Out Case Check if ambient temperature and humidity of surrounding air are high the gap in the door packed Wipe dew with a dry cloth This happening is solved in low temperature and humidity naturally Fill up the gap Abnormal noise generates 15 the set positioned in a firm and even place Does any unnecessary objects exist in the back side of the set Check if the Drip Tray is not firmly fixed Check if the cover of mechanical room in below and back side is taken out Adjust the Leveling screw and position in the firm place Remove the objects Fix it firmly on an original position Place the cover at an original position To close the door is not hangy Check if the door packing becomes dirty by filth such as juice 15 the set positioned in a firm an
24. 0 5CU 3 0MM 14 7245780004A FLUX SV PBF 06 KSK 12 5 WT 0 815 0 003 OKI 50 7 5 5 V LED DISPLAY amp PART LIST O gt gt gt gt gt gt 0 gt 3 O L1 2 8 14 05 L9 10 E P NO DESCRIPTION SPEC AKER REMARK C 687088262 PWB PCB ACE PJT VEGETABLE LED DISPLAY DOO SAN x 2 HOUSING 35002 0003 OLEX 101 35021 1201 PBT MOLEX HOUSING 35151 0610 OLEX 35151 0390 OLEX REC M 35746 0411 35748 0410 OLEX LEAD WIRE UL1007 AWG 24 VSF 0 18 12 0 3MM LEAD WIRE UL1007 AWG 24 VSF 0 18 12 0 3MM 5 08027000608 RESISTOR 270 OHM 1 4 W 5 TA26 ROHM R101 105 5 ODLSUO200AB LED LW540 TAPING WHITE 4500MCD Vf 3 0 3 4 SEOUL SEMICON L1 3 5 7 9 5 ODLSU0215AA LED LT520 TAPING GREEN 4500MCD Vf 3 0 3 8 SEOUL SEMICON L2 4 6 8 10 ym SOLOER SOLDERING HSE 02 HEE SUNG 4 FLUX LF 715K Pb FREE TAE WON E 51 7 6 PWB DIAGRAM 3 I 4N4004 1 1 i
25. 1 minute after the door is opened the buzzer sounds three times at the interval of 0 5 second After that every 30 seconds the buzzer sounds three times with 0 5 sec ON OFF The alarming is cancelled when the door of the freezer or the refrigerator is closed while the buzzer sounds EX CLOSE OPEN CLOSE OPEN z CLOSE FREEZER OR REFRIGERATOR DOOR three three three three E times times times times BUZZER lt gt lt gt gt within 1 minute 30 30 1 minute Seconds seconds 31 7 1 5 BUZZER SOUND 1 When the button on the front Display is pushed Ding sound is produced and it works as follows 7 1 6 DEFROSTING 1 The defrosting is performed each time when the total running time of the compressor reaches 7 hours 2 After the power is turned on or restored after a power failure the defrosting starts when the total running time of the compressor reaches 4 hours 3 When the temperature of the defrosting sensor reaches 13 C or above the defrosting stops If the temperature does not reach 13 C in 2 hours after the defrosting starts the defrosting error code is displayed Refer to 7 1 10 Error Diagnostic Mode 4 With the defective defrosting sensor cut or short circuited wire the defrosting will not be performed 7 1 7 SEQUENTIAL OPERATION OF ELECTRIC COMPONENTS The electric components such as the comp defrosting heater and
26. 2Y Y M712Y Y GRB652Y B B712Y B B652Y S B712Y S B652Y Y B712Y Y GR B652Y Q B712Y Q For the other models refer to the diagram of the entire PCB circuit 7 1 FUNCTION 7 1 1 FUNCTION 1 When the appliance is plugged in it is set to Medium Each time the button is pushed Exterior display is set to 3 25 1 0 6 5 4 in order and Interior display is set to R R3 gt R4 gt RO 2 When the power is initially applied or restored after a power failure it is automatically set to 3 against the interruption of electric power p GR M652Y A M712Y A GR M652Y X M712Y X GR M652Y Y M712Y Y GR B652Y B M712Y B GR B652Y S B712Y S GR B652Y Y B712Y Y GR B652Y Q B712Y Q Q SUPER COOL GREEN ION 522 DOOR COOLING M REFRIGERATOR Q CHILD LOCK SECS Temp Very Medium Medium Control Low EON Low Medium High High High TEMP C 6 5 4 3 2 1 0 ROOM REFRIGERATOR p GR B652Y C B712Y C REF TEMP CONTROL Temp Medium Medium Control Low Low Medium High High TEMP C eoooo eeooo E X OKO 0000 ROOM REFRIGERATOR 30 7 1 1 7 1 2 SUPER COOL This feature is to shorten the cooling time of the refrigerator by keeping the comp fan running for a while When the Super Cool button is pushed the Super Cool LED turns on in order and the comp keeps on running In 2 hours the
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28. 6 BRIGHT 001 017 1 3 MGW38269201 REFLECTOR NORYL 1 MF137166801 NAME PLATE P H CS PJT E MICOM LED MODULE 1 5 6630J88004K WAFER AW250 11 YEON HO 65009000008 SWICH TACT JPT12128 JEIL 12 00 SOMA NAMAE BW101 SWIO 6 ODRRMOOO28A DIODE RECTIFIERS RLR4004 ROHM RITP 50723 400V 20 SEC TOMA ROHM 0101 0106 9 00541480948 DIODE SWITCHING RLS4148 TV 100V 450 ROHM 0107 0109 092 12 SSO000008AA SOLDER ROSIN WIRE RSO SR 34 PB FREE LFM 48 HEESUNG nos 13 SSWZU LOSAA SOLDER SOLDERING LFM 38 SN 3 0 0 5 3 0MM HEESUNG 49 7 5 4 PWB ASS Y DISPLAY I MICOM AND PARTS LIST LI SW101 D es 8 8 amp ay P NO DESCRIPTION SPEC AKER REMARK 1 6870J83011A PWB PCB DISPLAY I MICOM DISPLAY DOO SAN 1 1 6877J880398 PWB PCB BP1 2 3 4 PJT MICOM DISPLAY GUIDE HOLE DOO SAN 1 2 6631820088 CONNECTOR ASSEMBLY GR 8592 552 BP3 4 PJT DISPLAY 1 4 SWITCH TACT JTP1230A JEIL 12V DC 50MA JEIL SWI01 5 5 0DLLEOO 9AA LED LEDTECH ELECTRONICS LT1824 81 8CM TP GREEN 2 LEDTECH 1 15 1 6 0DD414809AA DIODE SWITCHING 114148 26MM ROHM D101 T 1 6854850001 UMP WIRE 0 6MM 52MM TP TAPING SN 3101 12 SOLDER ROSIN WIRE 50 HEE SUNG SS0000008AA SR 34 PB FREE LFM 48 s 13 SSWZU LOSAA SOLDER SOLDERING LFM 38 SN 3 0AG
29. Freon cannot be added to the system all at once because it may cause a blocking of motor compressor Therefore proceed by adding original quantity of about 20 30 grams and close the valve immediately The pressure rises and the motor compressor must start sucking the gas and making the pressure go down again Regulate the valve again maintaining the same manner until reaching to the quantity of R 134a established for the system being charged When the system is running the suction pressure must be stabilized between 0 10 to 0 4 atmosphere 3 1 SPECIFICATIONS SPECIFICATIONS ITEMS 12 B712Y C GR B712Y B B712Y S FREEZER 157 157 RET REFRIGERATOR 409 393 TOTAL 566 550 DIMENSIONS mm 860 W X 750 5 D X 1794 H 860 W X 750 5 D X 1794 H NET WEIGHT kg 97 96 TEMPERATURE FBEREER Knob Dial CONTROL REFRIGERATOR Micom Control DEFROSTING SYSTEM Full Automatic Heater Defrost OUT CASE Pre Coated Metal INNER CASE ABS INSULATION Cyclo Pentane Foam FREEZER 1EA SHELF REFRIGERATOR 2 EA 3EA Option VEGETABLE TRAY Drawer Type EGG TRAY 1 Piece ICE TRAY 2 Piece ICE BANK 1 Piece COMPRESSOR P T C Starting Type EVAPORATOR Fin Tube Type CONDENSER Wire Condenser Screw Condenser REFRIGERANT R134a 140g R600a 699 DEFROSTING DEVICE Heater SPECIFICATIONS
30. In the case of GR M652 M712 203V model P No of main ASS Y is used as EBR327903 46 7 5 2 REPLACEMENT PARTS LIST We AOE WSL 4 1 1339 LvvS v YOLSISNYYL 91 LOS 93 590199 00 0107 VN001 VINOS AOS A09 AS 8181915086120 104 8 HO 1SISNVUL 918 UV 1Odl8 gO1SISNVUL 10083 410 87 S0031 6086 1 8910 VINOO AOS 1260 1 41 93 A90198 YY10dIg YOLSISNYYL 3960090 1810 VINOOL AOS WZ6OL d1 9022 W90 YS 93S VE A0001 Ov10200 V1130 8079 YOE YI A007 1770200 d1 199 7007 YOLSISNWYL 8710416 801515 1 3132939730010 3151193930010 2960090 080 3607007000 YNOL 23590 YO Z 1007 700 N3XNVS 218 315193930010 7 0 000 5800 VS 2354005 WOE 10001 1700 V1130 41 0183 3538 41 d 407077 SNIH91IMS 30010 91 WW600201800 00270 1871 NOtd33 9 405 98 33 OI 82790 AU3ANOO 0c IHSI80S1IN 9389999 1 SNIddV1 dOSNId9 V8lHSO 8 91813 39800599 219190791 VONVIS 91 219190791 10011510 17990001 29080059340 901 80110938 18 14 408 91 H00508 3 0 21 530010 801 10938 1
31. LG REFRIGERATOR CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL MODEL GR M652Y A M712Y A GR M652Y X M712Y X GR M652Y Y M712Y Y GR M652Y Q M712Y Q GR B652Y B B712Y B GR B652Y S B712Y S GR B652Y Y B712Y Y GR B652Y Q B712Y Q GR B652Y C B712Y C CONTENTS CONTENTS HOME BAR FAN AND FAN MOTOR DEF CONTHROL ASM 2 uie een CONTROL tute de pi eed ADJUSTMENT SERVICING PRECAUTIONS SPECIFICATIONS PARTS IDENTIFICATION FEATURE CHART 5 COMPRESSOR cte tt t a Set PTG STARTER dones und eo OLP OVER LOAD PROTECTOR CIRCUIT DIAGRAM TROUBLESHOOTING COMPRESSOR AND ELECTRIC COMPONENTS REPE Uem ANOTHER ELECTRIC COMPONENT SERVICE DIAGNOSIS CHART REFRIGERATING CYCLE DESCRIPTION OF FUNCTION amp CIRCUIT OF MICOM EXPLODED VIEW amp REPLACEMENT PARTS LIST SAFETY PRECAUTIONS Please read the followings before servicing your refrigerator 1 2 3 Check if an electric leakage occurs in the set To prevent elec
32. NG Certify the black wire WIRE is poor of MAIN PWB CONNECTOR CON2 2 Whether refrigerant Measure the amount of frost Refrigerant leakage Remedy the leaking leaks or not sticking on EVA and the surface part and reaching temperature of condenser pipe Refrigerant FREEZER 1 Whether FAN MOTOR PRESS TEST KEY MAIN FAN MOTOR is poor Replace FAN MOTOR DOOR LINEAR contact Replace DOOR LINER CONNECTING WIRE is poor Certify MOTOR and the connection of the black wire of MAIN PWB CONNECTOR CON2 2 DEFROSTING normal Certify the amount of frost sticking on EVA DEFROSTING is poor See the DEFROSTING trouble 3 SENSOR normal Check resistance the SENSOR in the Refrigerator SENSOR RESISTANCE is poor Replace SENSOR CLASSIFICATION STATE OF TROUBLE POINT BE CHECKED STAGECHECKING METHOD CONTENT REMEDY COOLING is poor REFRIGERATOR TEMPERATURE is poor 1 FREEZER TEMPERATURE is normal See FREEZER TEMPERATURE is poor Certify the attaching stateof DOOR 2 Cool air of FAN MOTOR is sufficient Certify the amount of cool air and its speed touching check supplied FAN MOTOR is poor Replace FAN MOTOR Passage of cool air Remove impurities into REFRIGERATOR blocking EVA frozen See DEFROSTING is poor DEFROSTING is NO DEFROSTING 1 HEATER emit heat PRESS TEST KEY on MAIN HEATER disconnection Replace HEATER
33. Q 24 1kQ 10 C 4 910 19 569 15 C 3 9kQ 15 9 9 20 C 3 1kQ 13kQ 25 2 56 11kQ 30 C 2 0kQ 8 9kQ 40 C 1 4kQ 6 20 50 C 0 8kQ 4 3kQ The resistance of SENSOR has 5 common difference Measure the resistance of SENSOR after leaving it over 3 minutes in measuring temperature This postponing is necessary because of perceiving speed 43 7 4 TROUBLE SHOOTING Replace PCB when no trouble after checking the contents of trouble shooting chart TEMPERATURE is poor operates or not PWB once forced COOLING CLASSIFICATION STATE OF TROUBLE POINT BE CHECKED STAGECHECKING METHOD CONTENT REMEDY POWER SOURCE 1 All the DISPLAY LED 1 FREEZER FREEZER REFRIGERATOR POWER SOURCE is poor Certify Fuse Certify is poor OFF REFRIGERATOR DOOR OPEN outlet Voltage 2 DISPLAY LED 2 LAMP is dim CHECK with the naked Applied voltage mistake Use boosting TRANS represents abnormal 3 The connection of Certify connection of CONNECTOR connection Reconnect operation CONNECTOR of CONNECTOR is poor CONNECTOR MAIN PWB TRANS FUSE open Replace TRANS COOLING is poor NO COOLING 1 COMPRESSOR PRESS TEST KEY on MAIN COMPRESSOR lock or Replace operates PWB once forced COOLING blocked COMPRESSOR If pass less than 7 minutes after OLP PTC is poor Replace OLP PTC stop of COMP don t press it COMPRESSOR RELAY Replace MAIN PWB and stand by is poor RY1 THE CONNECTI
34. TOR is attached to Hermetic Compressor and protects Motor by cutting off current in Compressor Motor by Bimetal in the OLP in case of over rising temperature 2 When over voltage flows to Compressor motor Bimetal works by heating the heater inside OLP and OLP protects Motor by cutting off current which flows to Compressor Motor 4 3 2 Role of OLP 1 OLP is attached to Hermetic Compressor used to Refrigerator and Show Case and prevents Motor Coil from being started in the Compressor 2 Do not turn the Adjust Screw of OLP in any way for normal operation of OLP Composition and connection Diagram of OLP 22 CONTACTING POINT COVER BIMETAL CONTACTING POINT HEATER TERMINALS BIMETAL ADJUST SCREW HEATER Figure 21 5 CIRCUIT DIAGRAM GR M652Y A M712Y A M652Y X M712Y X M652Y Y M712Y Y GR B652Y B B712Y B B652Y S B712Y S B652Y Y B712Y Y GR B652Y Q B712Y Q GR B652Y C B712Y C CIRCUIT DIAGRAM PWB PCB ASSEMBLY DISPLAY LED MODULE 8 5 4 T3 2 5 BL CON101
35. The resistance value is 0 Replace PTC or several hundreds 0 or infinity between two terminals of OLP with a Tester Figure 23 Separate the OLP from YES Check another electric Compressor and check components resistance value Figure 23 25 6 3 ANOTHER ELECTRIC COMPONENTS v Cooling is impossible Compressor doesn t run gt Check if current flows to the following em components a Thermistor Poor contacting b Starting devices Shorted or broken c OLP Poor contacting or shorted d Compressor coil Coil shorted e Circuit Parts gt Poor contacting or shorted Running state of Compressor is poor Replace each component v Cooling ability is poor Fan motor doesn t run Much frost are sticked to the EVAPORATOR LE Check a starting m gt Low voltage gt Raise the voltage voltage gt Check if current flows y Poor contacting Replace each to starting devices and broken component Check current flowing gt in sub coil of Shorted Compressor gt Check capacity of Lack of capacity The items described Coil of motor Replace the gt above normal Compressor compressor Ch
36. cooling fan start sequentially to avoid the noise and damage to the part which may result from the simultaneous start of various components on turning the power on or after the completion of a test Condition of Operation Operating Sequence If the temp of the defrosting sensor is 45 C or above POWER in 0 5 sec COMP in 0 5 COOLING FAN For the initial use after the ON ON ON purchase or grounding If the temp of the defrosting POWER 1 0 5 DEFROSTING in 5 sec DEFROSTING sensor is below 45 C ON P HEATERON 7 HEATER OFF After a power failure or SVC in0 5sec in 0 5 HOME BAR gt HEATER ON gt HEATER OFF uo pouunj s JoMod in 0 5 sec COMP 0 5 COLLING FAN ON ON W ALL LOADS in 7 min COMP ino sec COOLING FAN en returned from the Test mode OFF QN ON 32 7 1 8 ERROR DIAGNOSTIC MODE 1 The error diagnostic mode allows the SVC when a fault that may affect the performance of the product occurs while operating the product 2 Even if the function control button is pushed when an error occurs the function will not be performed However the recognition tone beep sounds 3 When the error is cleared while the error code is displayed due to a fault the appliance returns to the normal condition Reset 4 The error code is displayed by the refrigerator temp indicatio
37. d even place 15 too much food putted in the set Clean the door packing Position in the firm place and adjust the Adjust Screw Keep foods not to reach the door Ice and foods smell unpleasant Check if the inside of the set becomes dirty Did you keep smelly foods without wraping It smells plastic Clean the inside of the set Wrap smelly foods The new products smell plastic but it is removed after 1 2 weeks e In addition to the items described left refer to the followings to solve the complaint 27 Checkifdewformsin Defrosting is 2 of the Freezer poor defrosting circuit Check Refrigerating The cycle is L gt Repair the cycle Cycle faulty The operation of Replace the Check the Thermistor __ the Thermistor is y DUE poor 6 5 REFRIGERATING CYCLE v Troubleshooting Chart STATE OF THE STATE OF THE TEMPERATURE CAUSE SET EVAPORATOR OF THE REMARKS COMPRESSOR PARTIAL Freezer and Low flowing sound of A little higher A little Refrigerant LEAKAGE Refrigerator don t Refrigerant is heard and than ambient discharges get cold normally frost forms in inlet only temperature Normal cooling is possible m when injecting Refrigerant of regular amount 0 WHOLE Freezer and Flowi
38. d return to the previous condition TEST MODE1 STATUS LED TEST MODE1 STATUS LED Q SUPER COOL IONS 2 pe REFRIGERATOR REF TEMP CONTROL ft O CHILD LOCK 3SECS TEST MODE2 STATUS LED TEST MODE2 STATUS LED Q SUPER COOL REF TEMP CONTROL e mem O CHILD LOCK 3905 35 7 2 FUNCTION 7 2 1 POWER CIRCUIT STR A6351 The power circuit consists of the noise attenuation part and the SMPS Switch Mode Power Supply part The SMPS consists of the rectifier D1 D2 D3 D4 amp CE1 to convert AC voltage to DC voltage switching part IC2 to switch the converted DC voltage transformer to transmit energy of the first side of the switching end to the second side the secondary power to supply power to MICOM and IC and the feedback part IC3 to feedback the secondary voltage to the first side of the transformer in order to maintain the secondary voltage constant Caution High voltage DC 310V is maintained in this circuit Wait at least 3 minutes after unplugging to allow the current to dissipate There is a danger of electric shock 36 7 2 2 OSCILLATION CIRCUIT 30 8 9 yout This circuit is to generate the base clock for calculating time and the synchro clock for transmitting data from and to the ins
39. e Room Refrigerator Door Vegetable Drawer Vitamin Kit optional Levelling Screw Base Cover NOTE This guide covers several different models The refrigerator you have purchased may have some or all of the features shown above 14 p GR M652Y C M712Y C FREEZER COMPARTMENT Lamp Freezer Temperature g Control Dial Twigting Ice Serve MD Freezer Door Rack Shelf REFRIGERATOR 5 COMPARTMENT E Deodorizer oo Optional Egg Storage Rack n n 7 7 1 Shelves U Optional N Dairy Corner Lamp E I N Convertible Room Refrigerator Door A 217 Rack Vegetable Drawer Vitamin Kit optional Levelling Screw Base Cover NOTE This guide covers several different models The refrigerator you have purchased may have some or all of the features shown above 15 2 2 WATER DISPENSER e Putting The Water In The Water Tank e Features 1 Open the cover cap and pour water into the water tank Cover Cap DISPENSER PAD GRILLE Tank Cover Cap Cov
40. e sure the bulbs are cool to the touch Remove the lamp by turning it counterclockwise 3 6 CONTROL BOX R MULTI FLOW DUCT Figure 18 1 First remove all shelves in the refrigerator 2 Loosen 1 screws fixing the Control Box R to The Inner Case 3 Remove the Control Box R by pulling it downward 20 4 ADJUSTMENT 4 1 COMPRESSOR 4 1 1 Role The compressor inhales low temperature and low pressure gas evaporated from Evaporator of the Refrigerator and condenses this gas to high temperature and high pressure gas and then plays delivering role to Condenser 4 1 2 Composition The Compressor is Composed of Compressor Apparatus compressing gas Compressor Motor moving Compressor Apparatus and Case protecting Compressor Apparatus and Motor There are PTC Starter and Over Load Protector OLP in the Compressor outside On the other hand because the Compressor consists of 1 1000mm processing precision components and is sealed after producing without dust or humidity deal and repair with care 4 1 3 Note to Use 1 Be careful not to allow over voltage and over current 2 No Strike If applying forcible power or strike dropping or careless dealing poor operation and noise may occur 3 Use proper electric components appropriate to the Compressor 4 Note to Keep Compressor If Compressor gets wet in the rain and rust in the pin of Hermetic Terminal poor operation and poor contact may cause 5
41. eck current flowing in door S W Poor contacting Check current flowing in the Fan Motor Coil is shorted Replace each component Check current flowing of the following Shorted Replace each component components Def Sensor FUSE M Check current flowing of the following components Heater plate Heater cord 26 Replace each component 6 4 SERVICE DIAGNOSIS CHART COMPLAINT POINTS TO BE CHECKED REMEDY Cooling is Is the power cord unplugged from the outlet Plug to the outlet impossible Check if the power S W is set to OFF Set the switch to ON Check if the fuse of power S W is shorted Measure the voltage of power outlet Replace a regular fuse If voltage is low wire newly Cooling ability is poor Check if the set is placed close to wall Check if the set is placed close to stove gas cooker and direct rays Is the ambient temperature high or the room door closed Check if putting in hot foods Did you open the door of the set too often or check if the door is closed up Check if the Control is set to Min Place the set with the space of about 10cm Place the set apart from these heat appliances Make the ambient temperature below Put in foods after they get cold Don t open the door too often and close it firmly Set the control to mid
42. er 3 Make sure that the valve under the water tank is in position Push the connecting part into the hole VALVE REFRIG ERATOR DOOR WATER TANK RACK CAUTION 1 Do not use anything other than water including soft drinks milk and juices 2 Hot water needs to be cooled before being put in the water tank e Drinking 1 Press the dispenser pad with the glass 2 The water is released when the dispenser pad is pressed The pad returns to its original position when the glass is removed and the water stops its flow 16 e Cleaning Water Tank Grille and Drip Tray 1 Remove the Cover 1 Remove with the grille 2 Clean the inside and outside of the water tank with 2 Wash the grille with a mild dishwashing detergent and rinse thoroughly under detergent and rinse running water thoroughly 3 Clean the tank cover with dishwashing detergent and rinse thoronghly under running water CAUTION 1 Use lukewarm water when cleaning 2 Do not use anything other than water If it is used with soft drinks put water in the water tank and discharge three or four cups of water shortly 17 2 3 HOME BAR e How to disassemble and assemble the ice access door H BAR Door 1 Open the ice access door to carefully remove left rubber packing 2 While pressing the hinge separated using a pointed tool driver drill move it to the right and carefully separate the ice access door
43. he unpacked drier at the temperature of 80 100 C Don t keep the drier in a outdoor because humidity damages to it VACUUM 1 When measuring with pirant Vacuum gauge of charging M C vacuum degree is within 1 Torr 2 If the vacuum degree of the cycle inside is 10 Torr below for low pressure and 20 Torr for high pressure it says no vacuum leakage state 3 Vacuum degree of vacuum pump must be 0 05 Torr below after 5 min 4 Vacuum degree must be same to the value described item 2 above for more than 20 min Apply M C Vacuum Gauge without fail Perform vacuum operation until a proper vacuum degree is built up If a proper vacuum degree isn t built up check the leakage from the Cycle Pipe line part and Quick Coupler Connecting part DRY AND AIR NITROGEN GAS 1 The pressure of dry air must be more than 12 16 2 Temperature must be more than 20 70 C 3 Keep the pressure to 12 6Kg cm also when substituting dry air for Nitrogen Gas NIPPLE AND COUPLER 1 Check if gas leaks with soapy water 2 Replace Quick Coupler in case of leakage Check if gas leaks from connecting part of Coupler PIPE Put all Joint Pipe in a clean box and cover tightly with the lid so that dust or humidity is not inserted 29 7 DESCRIPTION OF FUNCTION amp CIRCUIT OF MICOM The following description is basically for GR M652Y A M712Y A M652Y X M712Y X M65
44. ide logic elements of the IC1 MICOM Be sure to use the authentic parts since the calculating time by the 1 may be changed or it will not work if the OSC1 SPEC is changed 7 2 3 RESET CIRCUIT 2 qu 5 29 1uF 1uF CC7 The RESET circuit is for allowing all the functions to start at the initial conditions by initializing various parts including the RAM inside the MICOM IC1 when the power is initially supplied or the power supply to the MICOM is restored after a momentary power failure For the initial 10ms of power supply LOW voltage is applied to the MICOM RESET terminal During a normal operation 5V is applied to the RESET terminal If a trouble occurs in the RESET IC the MICOM will not work 37 CONI FUSE 1 Ca VAI 2 7 2 4 LOAD BUZZER DRIVE amp OPEN DOOR DETECTION CIRCUIT 1 Load Drive Condition Check 12V A COOLING FAN i 2 2 aim I 3 2 i 2 2 a 5 5 MICOM Low RPM 10 AINI4_P74 4 75 9 AINIG_P76 H BAR HEATER va s NUH at d DEF HEATER FUSE M 3 DES
45. n LED on the display of the refrigerator while the remaining LEDs are off gt GR M652Y A M712Y A GR M652Y X M712Y X GR M652Y Y M712Y Y GR B652Y B M712Y B GR B652Y S B712Y S GR B652Y Y B712Y Y GR B652Y Q B712Y Q SUPER COOL e ue CHILD LOCK 3SECS 46 Error Code Bares State of Operation with Error Display Comp Cooling fan n 9 Faulty refrigerator Cut or short circuited wire of 15 min ON Low Normal 1 R sensor refrigerator sensor 15 min OFF RPM Condition Faulty defrosting d Cut or short circuited wire of Normal Low No 2 sensor defrosting sensor Condition RPM defrosting Faulty Room when super cool Cut or short circuited wire of 3 cec 5 intake air temperature sensor Normal tow Normal PER ey presse Condition RPM Condition together display will be all off Cut or disconnected wire of defrosting heater or temperature Normal Low Normal 4 Detrosting failure H fuse indicated at least 4 hours Condition RPM Condition later after the error occurs 33 7 1 9 ERROR DIAGNOSTIC MODE 1 The error diagnostic mode allows the SVC when a fault that may affect the performance of the product occurs while operating the product 2 Even if the function control button is pushed when an error occurs the function will not be performed 3 When the error is cleared while the error code is displayed due to a fault the appliance returns to the normal co
46. ndition Reset 4 The error code is displayed by the refrigerator temp indication LED on the display of the refrigerator while the remaining LEDs are off p GR B652Y C B712Y C REF TEMP CONTROL Q orF Error Code Display State of Operation with Error NO Error Cause Com Defrosting RO R1 R2 R3 R4 Cooling fan heater Faulty 2 ee wire of 15 min ON Normal 1 sensor on e contro O refrigerator sensor 15 min OFF Condition box of the refrigerator Faulty defrosting Cut or short circuited wire of Normal 2 sensor defrosting sensor Condition No defrosting Faulty room temp Cut or short circuited wire of Normal Normal 3 sensor in the main O O O Odetrosting sensor Condition PCB Cut or disconnected wire of Defrosting failure defrosting heater or temperature Normal Normal on EE oo fuse indicated at least after 2 hrs Condition Condition of error occurrence 34 7 1 10 TEST MODE 1 The test mode allows checking the PCB and the function of the product as well as finding out the defective part in case of an error The test button is on the main PCB of the refrigerator Test S W The test mode will be cleared in 5 minutes on test mode 1 and in 2 hours on test mode 2 and then reset 3 While in the test mode the function control button is not recognized though the recognition tone beep sounds 4 After exiting the test mode
47. ndition Reconnect Applied voltage isn t in Advise the customer the range of Rating to use a regular Voltage 10 Trans Check the resistance among M C S C and M S in Motor Compressor 2 Check the resistance of Motor Compressor Replace Compressor YES Check the resistance of two terminals in PTC Starter Check the resistance of PTC Starter Check if applying gt Check OLP a regular OLP Replace PTC Starter YES OLP works within 30 sec in forcible OLP operation by turning instant power on and off Replace OLP NO Measure minimum starting voltage after 5 min for balancing cycle pressure and cooling the PTC Check starting state Components start at voltage 10 of rated voltage 24 YES No Voltage OLP disconnected Replace OLP gt 6 2 PTC AND OLP Check another electric components Observation value at 220V 50Hz 47 Q 30 220 240V 50Hz 47 0 30 110 115V 60Hz 6 8 Q 30 220V 60Hz 47 0 30 127V 60Hz 22 Q 30 Separate the PTC from Compressor and measure the resistance between No 5 and 6 only RSIR Type or No 4 and 5 of PTC with a Tester or Wheat stone bridge Figure 22 Normal operation of Compressor is impossible or poor
48. ng sound of Equal to ambient No discharging of Refrigerant LEAKAGE Refrigerator don t Refrigerant is not heard and temperature Normal cooling is possible get cold at all frost isn t formed when injecting Refrigerant of regular amount PARTIAL Freezer room and Flowing sound of A little higher Normal discharging of CLOG Refrigerator don t Refrigerant is heard and than ambient refrigerant get cold normally frost forms in inlet only temperature The capillary tube is faulty UJ lt WHOLE Freezer and Flowing sound of Refrigerant Equal to ambient Normal discharging of CLOG Refrigerator don t is not heard and frost isn t temperature Refrigerant get cold formed MOISTURE Cooling operation Flowing sound of Refrigerant Lower than Cooling operation restarts CLOG stops periodically is not heard and frost melts ambient when heating the inlet of temperature capillary tube 9 COMP Freezer and Low flowing sound of A little higher The pressure of high m RESSION Refrigerator don t Refrigerant is heard and than ambient pressure part in compressor m get cold frost forms in inlet only temperature is low m compressing Flowing sound of Refrigerant Equal to ambient pressure of high pressure RESSION operation is not heard and no frost temperature part in compressor w Leakage Detection Observe discharging point
49. of refrigerant which may be in oil discharging part in compressor and hole of evaporator runs or not Whether Compressor Normal formed frost Whether frost forms or not in Evaporator Normal amount Moisture Clog Faulty Compressor No frost or forms in inlet only Whether oil leaks or not Observe the discharging amount of Refrigerant No or much amount YES operation Inject Refrigerant to Compressor and check cooling 28 Gas leakage frost in Evaporator Check the leakage point w General Control of Refrigerating Cycle NO ITEMS CONTENTS AND SPECIFICATIONS REMARKS WELDING ROD 1 H 30 Chemical Ingredients Ag 30 Cu 27 Zn 23 Cd 20 Brazing Temperature 710 840 C 2 Bcup 2 Chemical Ingredients Cu About 93 P 6 8 7 5 The rest within 0 2 Brazing Temperature 735 840 C Recommend H34 containing 34 Ag in the Service Center FLUX Ingredients and how to make Borax 30 Borax 35 Fluoridation kalium 35 Water 4 Mix the above ingredients and boil until they are transformed into liquid Make amount for only a day Holding period 1 day Close the cover of container to prevent dust putting in the FLUX Keep it in a stainless steel container DRIER ASM 1 Assemble the drier within 30min after unpacking 2 Keep t
50. orted is shown below 5V Iu 853 CON4 P64 60 zum ANN e 1 ERD 21 RT SENSOR fae sir 2 26 1KF 8 AW 3 amp bu s r L R SENSOR 0 022uF PS R50 50V 10uF T 4 ut 26 1KF AND 9 WW Sepe ee ces ok Ras mm D SENSOR OF Tm 6 SENSOR CHECK POINT NORMAL 30 C 50 C SHORT CIRCUITED OPEN Room Temperature Sensor POINT Voltage Refrigeration Sensor POINT amp Voltage 0 5V 4 5V 0V 5V Defrosting Sensor POINT Voltage 40 7 2 6 SWITCH INPUT CIRCUIT The circuit shown below is the input circuit to detect the signals of the test S W for checking the refrigerator 5V A Y ON R63 TESTS W 1115 2K MICOM 6 1 CC16 0 022uF 7 2 7 TEMPERATURE COMPENSATION amp OVERCOOLING UNDERCOOLING COMPENSATION CIRCUIT 1 The circuits for less cooling and overcooling compensation in a refrigerator compartment Bes 5 pos C 6l OPTION 955 OVER COOLING LESS COOLING COMPENSATION COMPENSATION REFRIGERATOR TEMPERATURE REMARKS COMPENSATION VALUES JCR1 JCR2 JCR3 JCR4 CUT d 1 C CUT CUT 5 5 2 CUT 1 C
51. st be kept under vacuum until the reading on the low pressure gauge indicates vacuum 0 absolute 1 atm 760 mm hg in any case it is advisable to keep the pump running for about 60 minutes Figure 3 In case that a considerable leakage occurs and to stop the vacuum pump will be necessary and add a small quantity of Freon to the system if vacuum should not be obtained pressure gauge can t fall to 1 atmosphere start the refrigeration unit and find the leakage with the special leak finder When the defective soldering point is visible re do it after opening the extension tube valve and reestablishing the normal outside pressure inside the group Because the melted alloy is sucked into the tubes and block them the pressure must be rebalanced when vacuum is in the system in soldering As soon as the vacuum operation In addition check the graduated scale on the cylinder for the quantity of R 134a to be added for example if we have 750 grams of Freon in the cylinder and must add 165 grams to the group this amount will be reached when R 134a has dropped to 585 grams remembering that the indicator shows a lower limit of meniscus Do this after choosing the scale corresponding to the gas pressure different scales reported as the same gas pressure indicated by the pressure gauge on the top of the column To make R 134a flow into the system open the valve placed at the base of the cylinder and connected to the filling tube The amount of
52. tric shock unplug prior to servicing In case of testing with power on wear rubber gloves to prevent electric shock If you use any appliances check regular current voltage and capacity Don t touch metal products in cold freezer with wet hand It may cause frostbite Prevent water flowing to electric elements in mechanical parts When you stand up during observing the lower part with the upper door open move with care to prevent head wound which may happen by hitting the upper door When sloping the set remove any materials on the set especially thin plate type ex glass shelf or books When servicing evaporator part wear cotton gloves without fail It is to prevent wound by sharp fin of vaporator 10 Leave a breakage of refrigerating cycle to a heavy service center The gas in cycle inside may soil ambient air SERVICING PRECAUTIONS Air Recharging in Compressor Test the refrigeration by connecting it electrically before refilling operation It is necessary to ascertain the function of the motor compressor and identify the defects immediately If the defects have been found empty the old system of eventual R 134a residue by breaking off the end of the extension piece at its narrow point Figure 1 Replace the filter and any damaged components Unsolder and pull off the piece remaining inside the service tube and then attach an extension completely with male Hansen and last solder it to the same t
53. ube again Figure 2 is over add the quantity in grams of R 134a to the refrigerant system Remember that every system has an exact quantity of R 134a with a tolerance of 5 grams that can be added Figure 4 POINT TO BE BROKEN CHARGE TUBE EXTENSION FEMALE HANSEN MALE HANSEN SERVICE TUBE EXTENSION SOLDERING POINT Figure 1 Figure 2 TO THE R 134a CYLINDER THE REFRIGERATION SYSTEM lt jas Figure 4 It is necessary to execute the soldering operation with valve open so that the fumes caused by oil residue can come out freely without blowholes between two tubes during heating the point to be soldered The extension fitted with the male Hansen is connected to the female fitting of the vacuum pump tube Figure 3 Before performing this operation if the vacuum pump and refilling cylinder are connected make sure that the valve placed between the vacuum pump and refilling tube are closed to keep the Freon for adding to the system Figure 5 TO THE VACUUM PUMP PRESSURE GAUGE Figure 3 FILLING OR VALVE TO BE OPENED CHARGE TUBE WHEN REFILLING 4 TO THE REFRIGERATION TO THE CHARGE SYSTEM CYLINDER VALVE TO BE CLOSED AFTER VACUUM TO THE VACUUM PUMP 4 5 Air evacuating from the system begins so soon as the pump starts The refrigeration system mu

REFRIGERATOR SERVICE MANUAL

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