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REFRIGERATOR SERVICE MANUAL

1. Lower cover Milk product corner Lamp Door Rack Shelf Can Server Optional Wine holder Plastic or wire Refreshment cente Optional Shelf Folding or Normal Egg Box Vegetable Drawer Humidity Switch Miracle Zone Optional Fresh compartment Optional Door Rack Conversion switch Meats Vegetables Optional PARTS IDENTIFICATION 3 Ref No GC L227 INTERNAL FILTER Cover PWB Frame Display Water Tube Dispenser Lamp Ice amp Water Dispenser Button Freezer Refrigerator compartment compartment Milk product corner Lamp Automatic Icemaker Shelf Door Rack Lamp Shelf Can Server Optional Wine holder Plastic or wire Shelf Refreshment cente Optional Shelf Folding or Normal Egg Box Drawer Vegetable Drawer Door rack Drawer Humidity Switch Miracle Zone Optional Fresh compartment Optional D k bn Door Rack Conversion switch Meats Vegetables Optional PARTS IDENTIFICATION 4 Ref No GC L227 EXTERNAL FILTER Frame Display Dispenser Lamp Ice amp Water Dispenser Button Cover PWB Freezer Refrigerator compartment compartment
2. part D part amp part Motor OFF 5V 2 or less 2V or less Motor ON 2 12 14V 8 16V 1 GC P227 L227 E R4l 330 5 eik b Amo D CON7 Ra R42 4 7K m 9 P54 53 Ro C FAN AN ba 05 R40 Kreaigg TT 25V 10K 4 D PSI rh C FAN LOCK 50 R43 Rade x 4 7K C Rage 2 06 330 2 KTBIISI Sa IT R45 mH d 102 E T Am Fu 1 5K 14 P53 52 3 1 29 ja F FAN 7 AN L ccio R47 KTC3198 TA 10K 4 777 R50 P50 49 LOCK 2 34 FOR MICOM CIRCUIT 1 12 Temperature compensation and temperature compensation circuit 1 Temperature compensation in freezer and refrigerator 1 GC P227 L227 RI6 RI7 IK Temperature compensation at refrigerator 56 MICOM ko Temperature compensation at freezer 57 Pel i d IES Freezer Refrigerator Resistance value Temperature Resistance value Temperature Remarks RCF1 compensation RCR1 compensation 180 kQ 5 C 9 F 180 2 5 4 5 F Warmer 56 4 C 7 2 F 56 2 0 3 6 F 33 3 C 5 4 F 33 1 5 C 2 7 F 18 2 C 3 6 F 18 1 0 C 1 8 F 12 1 C 1 8 F 12 kQ 0 5 C 0 9 F 10 0 C 0 F
3. Compensation Compensation for too warm for too cold Temperature compensation value Remarks JCR3 JCR4 JCRI JCR2 BEI TAN 6 6 0 6 0 C In shipment from factory CUT 1 C 1 8 F 96 6 6 1 C 1 8 F 6 66 i 1 C 41 8 F 96 5 5 1 C 41 8 F 6 6 2 C 3 6 F 6 5 CUT CUT 2 C 3 6 F CUT CUT 6 0 C 0 F CUT 5 5 0 C 0 F 66 6 0 0 0 F 6 0 CUT 5 0 C 0 F CUT CUT CUT 6 1 1 8 F 6 CUT CUT CUT 1 C 41 8 F CUT CUT CUT CUT 0 C 0 F gt This circuit allows adjustment of the set temperature for compensation by changing jumpers at locations JCR1 JCR4 FOR MICOM CIRCUIT 1 13 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
4. Automatic Icemaker Shelf Lamp Shelf Drawer Door rack Drawer Door rack Lower cover Milk product corner Lamp Door Rack Shelf Can Server Optional Wine holder Plastic or wire Refreshment cente Optional Shelf Folding or Normal Egg Box Vegetable Drawer Humidity Switch Miracle Zone Optional Fresh compartment Optional Door Rack Conversion switch Meats Vegetables Optional HOW INSTALL REFRIGERATOR 1 How to Adjust Door Height of Refrigerator Make the refrigerator level first If the refrigerator is not installed on the flat floor the height of freezer and refrigerator door may not be the same 1 If the height of freezer door is lower than that of 2 If the height of freezer door is higher than that of refrigerator compartment refrigerator compartment Height Difference Height Difference Difference Insert a driver into the groove of adjusting screw Insert a driver into the groove of adjusting screw and rotate driver in arrow direc
5. 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 To protect 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 Do not apply force to pipes before and after welding to protect pipe from cracking 3 Ne sealed parts Confirm Na Confirm air leaking To protect In case of evaporator parts if it doesn t leak sounds when moisture noise when removing rubber cap blow removing rubber penetration dry air or N2 gas for more than 1 min cap 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 op
6. 1 GC P227 L227 BDI D358460 1 na e E Sa eri de 4009 EON be 2 Di 12 FRIO7 2 EO ba T Zo R5 68 1 40 5 V RI IIK W R4 2 C2 FUSEZ 250V 5 5 1 48 TOY e gt 4 4 u 38 OO SA C2 IC2 OO T 3 bra 3300 Z7BVAC SIR 64 VD 651 7805 5 vre CCA EE CC6 104 NM er E lt L HAH oz VAI 221 2KV 32 Vss I 54 Voss ed m FUSEI EH 26 TEST EO I5 28 4i d 42 4148 TABI N 1 2 1 CONI A POWER 26 FOR MICOM CIRCUIT 1 2 Oscillation circuit The oscillation circuit generates a basic clock signal for synchronization and time calculation related to the transmission of data and calculations made by the MICOM IC1 The oscillator OSC1 must always be replaced with an exact replacement part If this specification is changed the change will affect the time calculations of the MICOM and it might not work at all 1 GC P227 L227 CSTS4 00MG03 1 XOUT 1 3 Reset circuit The RESET circuit allows various parts of the MICOM such as RAM defrosting etc to be restarted from the initi
7. 9 2 4 Cooling Problems Causes Checks Measures Remarks High Refrigerant leak Check sequence Weld the leaking part recharge the Drier must be replaced temperature 1 Check the welded parts of the refrigerant in 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 Cu 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 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 SISONSVIG Problems Causes Checks Measures Remarks High temperature in the freezer compartment Cycle pipe is clogged Check sequence 1 Check temperature of condenser manually If it is warm it is OK If it is not compressor discharging joints might be clogged 2 Manually check whethe
8. 55 COOLING CYCLE HEAVY REPAIR EAE 72 HOW TO DEAL WITH CLAIMS rient eret ett aaa E aar araeo 79 HOW TO DISASSEMBLE AND ASSEMEBLEE rreren 84 DOOR C 84 ub cp 85 SHROUD GRILLE SE 85 WATER VALVE DISASSEMBLY METHOD nti ntt Reden hierba tnt ke rr Rte repre 86 FAN AND FAN MOTOR DISASSEMBLY 86 DISPENSER nid n PERDE IP e EE rea ba Ee L 87 EXPLODED VIEW M 89 WARNINGS AND PRECAUTIONS FOR SAFETY Please observe the following safety precautions in order to use safely and correctly the refrigerator and to prevent accident and danger during repair Be care 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 When connecting power cord please wait for more than five minutes after power cord was disconnected from the wall outlet Please check if the power plug is pressed down by the refrigerator against the wall If the power plug was damaged it may cause fire or electric shock If the wall outlet is over loaded it may cause fire Please use its own individual electrical outlet for the refrigerator Please make sure the outlet is properly earthed particularly in wet or damp ar
9. HOW INSTALL REFRIGERATOR B Install Water Filter Applicable to some models only H Before Installing water filter 1 Before installing the filter take out the top shelf of the refrigerator after tilting it to the direction and lifting it to the direction 2 and move it to the lower part 2 Remove the lamp cover by pressing the protrusion under the cover and pulling the cover to the front E Installing water filter 1 Initial installation of water filter Remove the filter substitute cap by turning it counterclockwise 7 by 90 degrees and pulling it down Note Keep it safe to use it later when you do not use the filter Remove the red cap from the filter and attach the sticker Insert the upper part of the filter after aligning with the guideline marked on the control box and fasten it by turning it clockwise by 90 degrees Note Check that the guideline and the fastening indication line are aligned WE cL fa Substitute cap Separation of red cap 4 SAN Adhesion sticker 2 Replacement of water filter While holding the lower part of the filter turn it counterclockwise 7 by 90 degrees and pull it down Note Check that the guideline and the loosening indication line are aligned Control box Aligning with the guide line and the fastening indication line Control box Aligning with the guide line and the loosening indication line W Af
10. ZONE once more in the function SW LOAD sec sec amp sec MOTOR sec STEP test mode 2 or PRESS un ON C FAN 7 DAMPER DAMPER temperature of a E OFF ON ON pe frost removal than 5 it Test mode 2 immediately TEST comp 28 Fran 03 FROST 03 RSTEP da y n removal SW sec amp sec REMOVAL sec motor Oe forinta PRESS OFF GEAN HEATER DAMPER operation 2 Times OFF ON CLOSE COMP operates after 7 minutes 22 MICOM FUNCTION 2 16 Failure Diagnosis Function 1 Failure diagnosis function is function to facilitate service when nonconforming matters affecting performance of product during use of product 2 In occurrence of failure pressing the function adjustment button does not perform function 3 If nonconforming matters occurred are released during display of failure code MICOM returns to the original state Reset 4 Failure code is displayed on the display part of setting temperature for the freezing room and the display part of setting temperature for the cold storage room of LCD which are placed at the display part of a refrigerator All the LCD graphics other than a failure code are turned off DELUXE FAILURE CODE INDICATION PART y Hn Iq F 5 ROOMTEMPERATURE DOOR ALARM I FILTER
11. HRD CON101 11 GY WATER TANK SENSOR GY AMBIENT WH SENSOR KO RD RD BN EN BO A 2 BOT 3 1 pw KH HEATER SHEET DUCT DOOR LATIN SB PK FUSE PART FUSE PART APPLICATION OPTIONAL FUSE 100 127V NO FUSE 220 240V 250VAC 15A PIPE HEATER UL DISP HEATER DEF HEATER FUSE MELTING 72 C Ea EE Bo C Oso eea SWITCH Id PK BO XOPK BO j SWITCH RD rk F DOOR IOPTIONAL 7 ICE MAKER KIT AUGER MOTOR 5 DI DISPENSER Cor SOLENOID CUBE LEVER S W gt z SCR WATER 2 D E4 Q o EEE 2 HEATER CORD H BAR NAN H BAR PARTS E E s o o z E SOLENOID DISPENSER 2 Re RUNNING PK CAPACITOR STARTING 5 ES ES 9252 CAPACITOR 5 6 6 5 3 2 d COMPRES
12. MONTH OLD 3SECS O PROPER OPERATION FAILURE CODE PRODUCT OPERATION STAUS IN FAILURE INDICATION PART NO ITEM FREEZER ROOM NOTCH REFRIGERATOR ROOM NOTCH CONTENTS OF FAILURE COMPRESSOR FREEZING BLDC COOLING BLDC DEFROST STEPPING MOTOR TEMPERATURE DISPLAY TEMPERATURE DISPLAY MOTOR MOTOR HEATER DAMPTER ABNORMAL FREEZER SENSOR ON FOR 15 MINUTES 1 FREEZER SENSOR Er FS SHORT CIRCUIT OFF FOR 15 MINUTES STANDARD RPM ABNORMAL REFRIGERATOR amp OREER PART Er 16 REFRIGERATOR SENSOR1 FULL OPENING FOR 10 MINUTES REFRIGERATOR SHORT CIRCUIT FULL CLOSING FOR 15 MINUTES COMPARTMENT ABNORMAL REFRIGERATOR SENSOR2 R2 3 LOWER PART IN THE NORMAL DISPLAY NOTE2 Baa SENSOR STANDARD RPM REFRIGERATOR COMPARTMENT ABNORMAL 4 DEFROST SENSOR Er 95 ABNORMAL SHORT CIRCUIT STANDARD RPM NO DEFROST DEFROST HEATER TEMPERATURE FUSE SHORT 5 5 FAILED DEFROSTING CIRCUIT UNPLUGGED STANDARD RPM CONNECTOR INDICATED O 4 HOUR LATER AFTER TROUBLE MOTOR DEFECT HOOKED OF LEAD Er FF WIRE TO FAN CONTACT OF O OFF O O O STRUCTURES WITH FAN SHORT OR OPEN OF LEAD WIRE THERE IS NO SIGNAL OF BLDC MOTOR MORE 7 eia Mak Er CF THAN 115 SECONDS IN OPERATION STANDARD RPM OFF O O OF FAN MOTOR SHORT OR OPEN OF LEAD WIRE ABNORMAL CONNECTING BETWEEN MAIN PCB 8 COMMUNICATION Er AND DISPLAY PCB TRANSMISSIO
13. Seal with drain Foreign materials P U lump input Screw input Other foreign materials input Cap drain is not disconnected r Wire is cut Lead wire Heating wire Contact point between heating and electric wire Dent by fin evaporator Heating wire is corroded Water penetration Bad terminal connection Check visually li Check terminal Conduction OK No conduction NG If wire is not cut refer to resistance P Power V Voltage R Resistance p S 47 TROUBLE DIAGNOSIS CLAIMS CAUSES AND CHECK POINTS HOW TO CHECK 3 Refrigeration is weak Residual Weak heat from heater Sheath Heater rated frost Heater plate rated Too short defrosting time Defrost Sensor Air inflow through the fan motor Structural fault Bad insulation of case door r No automatic defrosting L Defrost does not retum 3 Cooling air leak Bad gasket adhestion Gap F Bad attachment Contraction Door Bad adhesion Weak binding force at hinge 4 No cooling air circulation Faulty fan motor p Fan motor Self locked Wire is cut Bad terminal contact m Button pressure Melted contact Contact Faulty characteristics Seat D missing location thickness Door switch Faults
14. ABNORMAL 5 NORMAL WATER TANK SENSOR Erara r NORMAL L MAGIC ROOM SENSOR ABNORMAL 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 DISPLAY PART GRAPHIC ON THE E PART TURNS OFF DISPLAY PART GRAPHIC ON THE PART TURNS ON DISPLAY PART GRAPHIC ON THE PART TURNS OFF DISPLAY PART GRAPHIC ON THE D PART TURNS ON DISPLAY PART GRAPHIC ON THE D PART TURNS OFF THE OTHER DISPLAY GRAPHICS TURN ON DISPLAY PART GRAPHIC ON THE E PART TURNS ON 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 strong cold mode 1 Continuous operation of compressor 2 Continuous operation of freezing bldc motor high speed RPM and cooling bldc motor 3 Defrost heater t
15. http eic lgservice com EXE REFRIGERATOR CAUTION PLEASE READ CAREFULLY THE SAFETY PRECAUTIONS OF THIS BOOK BEFORE CHECKING OR OPERATING THE REFRIGERATOR MODEL GC P227 L227 COLOR TITANIUM CONTENTS WARNINGS AND PRECAUTIONS FOR SAFETY rre ea 3 SPECIFICATIONS 4 PARTS IDENTIFICATION m 6 HOW TO INSTALL THE REFRIGERATOR sr ee 10 HOW TO ADJUST DOOR HEIGHT OF THE sr 10 ROW TOIINSTALL WATER EURE ERR etc EEE 11 HOW TO CONTROL THE AMOUNT OF WATER SUPPLIED TO THE esee 15 MICOM FUNCTION em 16 EXPLATION FOR MICOM 26 EXPLANATION FOR PWB CIRCUIT 4 22 82 2 HERO Lm eerte ipe Pee atarra 26 ICE MAKER AND DISPENSER OPERATION PRINCIPLE AND REPAIR METHOD sr 41 Aa aa bere bec eite erect cen I EE ee trt 41 IGEMAKER FUNGTION EEA 42 DEFECT DIAGNOSIS FUNCTION nee do koka ik 43 CIRCUIT AAO 44 TROUBLE DIAGNOSIS iisvsscscisadestsscnasianinsiasnarssansinsitnsanancasatosnasaiacnainahassnadesnsdabatdsinnansatngasaanadastadabececaaasinsassananssnnnideageaoaiaansne 45 TROUBLESHOOTING tee Pe edd dt iUm ide denm ire 45 AU ERI
16. 2 12 Ringing of button selection buzzer 1 If pressing the front display button Ding sound rings 2 13 Ringing of compulsory operation compulsory 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 14 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 21 MICOM FUNCTION 2 15 Sequential operation of built in product Built in products such as compressor frost removal heater freezing room fan Cooling Fan and step motor damper are sequentially operated as follows for preventing noise and part damage occurr
17. 6 3 F 5 4 F 4 5 F 3 6 F 2 7 F 1 8 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 35 C 3 C 25 C 2 C 15 C 1 C 10 5 No 0 5 C 56 8 1 F 7 2 F 6 3 F 5 4 F 4 5 F 8 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 C 4 C 3 5 3 C 2 5 C 2 C 1 5 1 C 105 C No 180 KQ 9 F 8 1 F 7 2 F 6 3 F 5 4 F 4 5 F 8 6 F 2 7 F 1 8 F 0 9 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 gt 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 36 FOR MICOM CIRCUIT 2 Compensation circuit for temperature at freezer 1 GC P227 L227 R20 OK Rises FL em S 1 1 RI9 JCR2 PH OK ESO R22 ko OK 1 1 70 AINIO OK e JCR4 m Temperature compensation in CUT JCR1 1 C 1 8 F JCR2 41 C 1 8 F id JCR3 1 C 1 8 F 2 C 3 6 F JCR4 1 C 1 8 F
18. Refrigerator and freezer switch is reversed Travlel distance Bad connection Bad terminal contact P U liquid leak 1 Lead wire is damaged Wire damage when assembling P T C Cover r Outlet burr the bottom plate Pressed by cord heater lead wire evaporator pipe 2 Exposed terminal r Compressor Compartment terminal Touching other components Freezer compartment terminal Touching evaporator pipe 3 Faulty parts Transformer Coil contacts cover Welded terminal parts contact cover Bad sealing L Sheath heater Compressor Bad coil insulation Plate heater Melting fuse Sealing is broken Moisture penetration m Cord heater ER Pipe damaged Moisture penetration CLAIMS CAUSES AND CHECK POINTS HOW TO CHECK 8 Faulty lamp 1 Lamp problem Filament blows out freezer and Glass is broken refrigerator 2 Bad lamp assembly Not inserted compartment E Connect conduction and non conduction parts and check with tester Conduction Resistance OK 53 TROUBLE DIAGNOSIS Food Storage Seal condition Long term storage H Store special odorous food Others Odors from chemical procucts CLAIMS CAUSES AND CHECK POINTS HOW TO CHECK 10 Structure 1 Door foam appearance
19. 1 GC P227 L227 1 p Sed FE eiu AA 0 4 10K 2 10K 10K 33 11 11 p31 d ki B 4 5 7 2 2 35 1213 es le T TA7774P 13 The 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 IC10 TA7774F the motor drive chip The output signals allow the coils wound on each phase of the stator to form a 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 4 Positive rotation CW INA INB PI 33 FOR MICOM CIRCUIT 1 11 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
20. Check cooling capacity Check radiator manually to see if warm 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 arrangeme 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 tools and store them in a clean tool box or in their place Copper brush Rag Tool box Transportation and installation Installation should be conducted in accordance with the standard installation procedure Leave space of more than 5 cm from the wall for compressor compartment cooling fan mounted model 73 TROUBLE DIAGNOSIS 3 3 Precautions During Heavy Repair Items Precautions 1 Use of tools 1 Use special parts and tools for R134a 2 Removal of retained 1 Remove retained refrigerant more than 5 minutes after turning off a refrigerator refrigerant If not oil will leak inside 2 Remove retained refrigerant by cutting first high pressure side drier part with a nipper and then cut low pressure side If the order is not observed oil leak will happen Evaporator Compressor Drier Low pressure side Condenser High pressure side 3 Replacement of drier 1 Be sure to replace drier with R134a only when repairing pipes and injecting refrigerant
21. 10 kQ 0 C 0 F Reference temperature 8 2 kQ 1 1 8 F 8 2 kQ 0 5 C 0 9 F 5 6 KQ 2 C 3 6 F 5 6 kQ 1 0 C 1 8 F 3 3 3 C 5 4 F 3 3 kQ 1 5 C 2 7 F 2 kQ 4 C 7 2 F 2 kQ 2 0 C 3 6 F 470 Q 5 C 9 F 470 Q 2 5 C 4 5 F Cooler gt Temperature compensation table by adjustment value difference value against current temperature Ex If you change compensation resistance at a refrigerator RCR1 from 10 kQ current resistance to 18 kQ modified resistance the temperature at the refrigerator will increase by 1 C 1 8 F 35 EXPLATION FOR MICOM CIRCUIT gt Temperature compensation table at the refrigerator is as follows Modification resistance Curent 4700 2 3 3kQ 5 6 8 2kQ 10kQ 12kQ 18kQ 33kO 56 180 resistance No 05 C 1 C 1 5 2 C 2 5 C 3 C 3 5 4 C 145 C 5 C 470Q 0 9 F 1 8 F 2 7 F 8 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 4 C 45 C 2kQ 0 9 F 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 Down change Up Up Up Up Up Up Up Up Up 1 C 0 5 C No 05 C 1 C 1 5 C 2 C 2 5 C 3 C 35 C 4 C 1 8
22. 4 Nitrogen blowing 1 Weld under nitrogen atmosphere in order to prevent oxidation inside a pipe welding Nitrogen pressure 0 1 0 2 kg cm 5 Others 1 Nitrogen or refrigerant R134a only should be used when cleaning inside of cycle pipes inside and sealing 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 74 TROUBLE DIAGNOSIS 3 4 Practical Work For Heavy Repair Items Precautions 1 Removal of residual refrigerant Evaporator Low pressure side KEYPOINTING Observe the sequence for removal of refrigerant If not compressor oil may leak Compressor N TAKE Release Condenser Refrigen Intake 1 Remove residual refrigerant more than 5 minutes later after turning off the refrigerator If not compressor oil may leak inside 2 Remove retained refrigerant slowly by cutting first high pressure side drier part with a nipper and then cut low pressure side 2 Nitrogen blowing welding Evaporator 5 9 KEYPOINTING Welding without nitrogen blowing produces oxidized scales inside a pipe which affect on performance and reliability of a product High pressure side Condenser Refrigen Intake When replacing a drier Weld and 2 parts by blowing nitrogen 0 1 0 2kg cm to high pressure side after assembli
23. F 0 9 F 0 9 F 1 8 F 2 7 F 3 6 F 4 5 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 0 5 C No 05 C 1 C 15 C 2 C 2 5 C 3 C 3 5 5 6 kQ 2 7 F 1 8 F 0 9 F 0 9 F 1 8 F 2 7 F 9 6 F 4 5 F 5 4 F 6 3 F Down Down Down change Up Up Up Up Up Up Up 2 C 15 C 1 C 0 5 No 0 5 C 1 C 15 C 2 C 25 C 3 C 8 2 3 6 F 2 7 F 1 8 F 0 9 F 0 9 F 1 8 F 2 7 F 3 6 F 4 5 F 5 4 F Refrigerator Down Down Down Drop change Up Up Up Up Up Up RCR1 2 5 C 2 C 1 5 C 1 C 0 5 No 0 5 C 1 C 1 5 2 C 2 5 10 4 5 F 3 6 F 2 7 F 1 8 F 0 9 F 0 9 F 1 8 F 2 7 F 3 6 F 4 5 F Down Down Down Down Down change Up Up Up Up Up 3 C 2 5 2 C 15 C 1 C 0 5 No 05 C 1 C 1 5 2 C 12 5 4 F 4 5 F 3 6 F 2 7 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 2 5 2 C 15 C 1 C 0 5 C No 0 5 1 C 1 5 18 6 3 F 5 4 F 4 5 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 9 3 C 25 C 2 C 1 5 C 1 C 0 5 C No 0 5 1 C 33 7 2 F
24. Checks and Measures The refrigerator case is hot W 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 no enough space to dissipate heat it can be hotter due to lack of heat radiation Please install a refrigerator in a well ventilated place and leave a clearance between refrigerator and wall Small holes in a door liner W Explain that the hole is for releasing gas A small 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 Check the use conditions e Too frequent door opening and hot food storing cause the compressor to operate continuously and hence increase the electric consumption and bills Condensation on the inside wall of the refrigerator compartment and the cover of properly vegetable drawer 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 the air tight container or in the wrap When is the power connected E When should the power be connected
25. Condenser REFRIGERANT R134a 1809 Plane View PARTS IDENTIFICATION 1 Ref No GC P227 INTERNAL FILTER Cover PWB Frame Display Water Tube Dispenser Lamp Ice amp Water Dispenser Button Home Bar Freezer Refrigerator compartment compartment Milk product corner Lamp Automatic Icemaker Shelf Door Rack Lamp Shelf Can Server Optional Wine holder Plastic or wire Shelf Refreshment cente Optional Shelf Folding or Normal Egg Box Drawer Vegetable Drawer Door rack Drawer Humidity Switch Miracle Zone Optional Fresh compartment Optional D k bn Door Rack Conversion switch en Meats Vegetables Optional PARTS IDENTIFICATION 2 Ref No GC P227 EXTERNAL FILTER Frame Display Dispenser Lamp Ice amp Water Dispenser Button Home Bar Cover PWB Automatic Icemaker Shelf Lamp Shelf Drawer Door rack Freezer Refrigerator compartment compartment a ESE E e 4 ye Y f E e Be 6 e
26. Hours NET WEIGHT kg 132 DEFROST CYCLE 13 15 Hours COOLING SYSTEM Fan Cooling DEFROSTING DEVICE Heater Sheath TEMPERATURE CONTROL Micom Control ANTI SWEAT HEATER Dispenser Duct Door Heater DEFROSTING SYSTEM Full Automatic Dispenser Heater Heater Defrost Home Bar Heater INSULATION Cyclo Pentane ANTI FREEZING HEATER Damper Heater COMPRESSOR P T C Starting Type FREEZER LAMP 40W 1 EA EVAPORATOR Fin Tube Type REFRIGERATOR LAMP 40W 1 EA 30W 1 EA CONDENSER Wire Condenser REFRIGERANT R134a 1809 LUBRICATING OIL FREOL 0106 310 cc CAPILLARY TUBE ID 0 83 DRIER MOLECULAR SIEVE XH 7 Plane View SPECIFICATIONS 2 Ref No GC L227 ITEMS SPECIFICATIONS ITEMS SPECIFICATIONS DIMENSIONS mm 894 W x790 D x1753 H DRIER MOLECULAR SIEVE XH 7 NET WEIGHT kg 129 FIRST DEFROST 4 5 Hours COOLING SYSTEM Fan Cooling DEFROST CYCLE 13 15 Hours TEMPERATURE CONTROL Micom Control DEFROSTING DEVICE Heater Sheath DEFROSTING SYSTEM Full Automatic Heater Defrost ANTI SWEAT HEATER Dispenser Duct Door Heater Dispenser Heater LUBRICATING OIL FREOL 10G 310 cc CAPILLARY TUBE ID 0 83 1753 lt Front View gt INSULATION Cyclo Pentane ANTI FREEZING HEATER Damper Heater COMPRESSOR P T C Starting Type FREEZER LAMP 40W 1 EA EVAPORATOR Fin Tube Type REFRIGERATOR LAMP 40W 1 EA 30W 1 EA CONDENSER Wire
27. 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 Water dispenser function 1 LCD 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 M C room is opened so that water can be supplied if selecting Water from the function adjustment part and then pressing the press switch 25 FOR MICOM CIRCUIT 1 Explanation for PWB circuit 1 1 Power circuit The power circuit includes a Switched Mode Power Supply SMPS It consists of a rectifier BD1 and CE1 converting AC to DC a switch IC2 switching the DC voltage a transformer and a feedback circuit IC3 and IC4 Caution Since high voltage 310 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 VA1 CE1 CE2 CE3 CE4 CE5 Voltage 230 Vac 310 16 12 16 5 Vdc
28. LCD Back Light Control 1 In order to easily view display status on the LCD LCD Back Light is turned on for a minute in application of initial power for a minute in button manipulation and for a minute after closing time from opening time of door 2 If pressing any display button once with the backlight turned off buzzer rings and button function is not performed but only backlight is turned on If pressing the first button with the back light turned off only back light ON function is performed 3 If pressing the special freezing button and the freezing temperature adjustment button for more than a second the back light is turned on and all the graphics of LCD are turned on If releasing the button the LCD graphic is displayed in the previous status and the back light is turned off check LCD graphic and back light ON OFF status 2 1 3 Outside temperature display function 1 Outside temperature sensor at the left U of refrigerator senses ambient temperature and displays the outside temperature in the left side of Outside temperature text on the LCD of the display part 2 Ambient temperature is displayed up to 9 C 49 C and displayed as Lo for less than 10 C and as HI for more than 50 C 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 freezing room it may differ from the outside
29. Micom No 16 Lever S W 5V On 60 Hz OV OFF 5V 29 FOR MICOM CIRCUIT 1 6 Door opening sensing circuit 1 GC P227 L227 el gc ZE L 5 F poor sw MICOM m2 is gl E 5 R DOOR S W Measuring part Hek No 44 45 45 46 47 48 Pin Door of Freezer and Refrigerator Closing 5 V A B 0 Switch at both ends are at Off status Opening OV A B D Switch at both ends are at On status Since door switches A and B are interconnected if either fails the other will not respond properly If either switch fails the light will not come on 30 FOR MICOM CIRCUIT 1 7 Temperature sensing circuit 1 GC P227 L227 an Sa d CON7 e pes 62 F SENSOR LAINS cce L zer 5 en AF 6 m R32 ay Z T Y T5 Org D SENSOR xr AINSI ES L ze 4 5 N pep 58 R53 26 IKF CONS LEZ 5 evo RI SENSOR QO Hen 22 6 DE 223 PRZ e 59 EEA MES t AIN3 EE EN Lan 71 69 R2 SENSOR 223 T ES 8 s 60 R59 ve EE il P64 3 EO AIN4 EEI v EO ETI FRESH 104 T gud The circuits involving the freezer and refrigerator
30. Water Tube Water Tube Nut HOW INSTALL REFRIGERATOR 3 When customer uses bottled water If customer wants to use bottled water extra pump should be installed as shown below 1 The pump system should not be on the floor it may cause noise and vibration Securely fasten the inlet and outlet nuts of pump 2 If there is any leakage after installation cut the water tube at right angle and reassemble 3 When put the water tube end into the bottle leave a clearance between bottle bottom and water tube end 4 Check water coming out and any leakage Caution If feed tube is more than 4m less water will come out due to pressure drops Use standard feed tube to prevent leaking Bi Outternal Filter 1 Filter Fixation 1 There are two types of filter One is nut type and the other is connector type 2 Connect feed tube to the filter outlet and water valve connecting tube 3 Fix the filter at proper place around the sink where it is easy to replace the filter and to receive the cleaning water Please consider the length of tube shall be less than 8m when locating filter Nut Nut H Inlet Connector Type Nut Type Outlet Hot Water 2 Filter Cleaning Cold Water 1 Connect feed tube to the inlet of feed valve and filter 2 Clean the main valve and feed valve with water for at least one minute until clean water comes out Filter Inlet Feed Valve Filter
31. You can connect the power right after the installation But if the refrigerator was laid flat during transportation for a long period of time and the refrigerant and compressor oils are mixed up then this will affect badly the performance of a refrigerator Be sure to connect the power 2 3 hours after refrigerator is installed Door does not open properly 7 ME The front side should be raised 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 then open smoothly E When the refrigerator compartment door is open and close the freezer compartment door moves up and down When the refrigerator compartment door is open and close fresh air comes into the freezer compartment and moves up and down the freezer compartment door E Door opens too easily There is a magnet in the gasket rubber so that it is ok if door is securely closed without a gap It can be open easily if the foods in the refrigerator or freezer compartments hold the door open door does not close properly f the rear side of the refrigerator is raised higher than front si
32. 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 whistle 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 SISONSVIG 99 2 8 Problems Causes Checks Measures Remarks Food Odor Food garlic kimchi etc Check the food is not wrapped Dry deodorizer in the shiny and Check the shelves or inner windy place wall are stained with food juice Store the food in the closed Check the food in the vinyl wraps container instead of vinyl wraps Chedk food cleanliness Clean the refrigerator and set button at strong Plastic Odor Odors of mixed food and plastic Check wet food is wrapped with Clean the refrigerator odors plastic bowl and bag It happens in
33. 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 diagnosis 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 20 MICOM FUNCTION 2 10 Control of M C room fan motor 1 The M C room 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 11 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 3Times 3 Times BUZZER A p p b Within minute 90 GO 30 a minute Seconds seconds seconds
34. during welding In order to prevent insulation break and accident 3 The inner case shall be melted and insulation material polyurethane shall be burnt if not cared during welding inner case parts 4 The copper pipe shall be oxidized by overheating if not cared during welding 5 Not allow the aluminum pipes to contact to copper pipes In order to prevent corrosion 6 Observe that the inserted length of a capillary tube into a drier should be 12 2 mm Drier Molecular Molecular Pipe Sieves hm 7 Make sure that the inner diameter should not be distorted while cutting a capillary tube 8 Be sure that a suction pipe and a filling tube should not be substituted each other during welding High efficiency pump ee TROUBLE DIAGNOSIS 3 6 Brazing Reference Drawings 1 Asia Middle East Africa PIPE ASSEMBLY HOT LINE PIPE ASSEMBLY HOT LINE Refrigerator Freezer Copper Silver Copper Brazer Brazer Copper Silver Brazer Silver Brazer PIPE ASSEMBLY SUCTION Copper Brazer PIPE ASSEMBLY CONDENSER S JOINT ASSEMBLY WIRE Copper Brazer 7 Silver Brazer 2 Europe amp CIS America PIPE ASSEMBLY HOT LINE Freezer Copper Silver Copper Brazer Brazer 0000 CAPI TUBE DRIER ASSEMBLY Silver Brazer PIPE ASSEMBLY SUCTION Copper Brazer PIP
35. into the formula P V V Rated voltage of user country Resistance of tester Q Compare P and lavel capacity Tolerance 7 Faults replace How to replace Refer to main parts SISONSVIG 318nou8 L 09 Problems Causes Checks Measures Remarks No defrosting Melting fuse blows out 1 Lead wire is cut 2 Bad soldering Check melting fuse with tester If 00 If wire is cut Faullty parts parts replacement Check wire color when maeasuring resistance with a tester Ice in the Sucking duct 1 Icing by foreign materials in the duct 2 Icing by cool 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 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 connec
36. 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 gt Resistance of the cold storage sensor 1 and 2 shall be measured with a digital tester after separating CONS of the PWB ASSEMBLY and the MAIN part gt Resistance of the freezing sensor shall be measured with a digital tester after separating CON7 of the PWB ASSEMBLY and the MAIN part 39 FOR MICOM CIRCUIT 1 14 Miracle Zone STEPPING MOTOR Display Miracle zone stepping motor damper is same as 1 8 stepping motor operation circuit and the miracle zone display turns on only when the R door opens ETA AIZEAN GREAT E AT DS E LIED E EE EL MCA E P64 60 T AINA Sou x ad OF 4 1 1 m ICI 50 a 2 1 eu 9 16 7774 1 5 1 l tOI 2 3 Aw ws C LF ng TEA 4 4 STEPPING p 2 spo T MOTOR CO dde 8 5 RIO2 B pis 23 5 6 berko E 1 pad EE une PUR ee 1 Fo be P
37. 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 testerf if it is 00 it is 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 f fuse blowns out frequently reconfirm the cause and prevent 2 2 Compressor Check other parts Problems Causes Checks Measures Remarks Compressor Faulty PTC Check the resistance resistance is infinite replace it does not Vlaue ee is defective with new one operate If it is not infinite it is normal Compressor is frozen If compressor assembly parts are normal capacitor PTC 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 Refer to weld repair procedures SISONSVIG 318noug8 L 99 2 3 Temperature Rotate rotor manually and check rotation Wire is cut Bad
38. m Sag r Weak torque of Bolt is loosened during and others hinge connection transportaion Not tightly fastened Screw wom out Weak gasket Adhesion surface adhesion Fixedtape Not well fixed Noise during Hinge interference Bigger door foam operation Hinge Pin tilted Poor flatness No washer No grease and not enough quantity Malfunction Not closed Interference between door liner and inner liner Refrigerator Stopper worn out compartment is r Bad freezer compartment door opened when freezer assembly compartment is No stopper closed faulty stopper 2 Odor Temperature of High Faulty damper control refrigerator Button is set at weak compartment Door is open interference by food m Deodorizer deodorizer Poor capacity 54 99 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
39. open for ice x If the EJECTOR does not rotate once within 5 minutes in B mode separate heater control mode starts operating to prevent the EJECTOR from being constrained It is recommended that the user open for ice to return to normal mode 2 4 Fill Park Position 1 Once a normal harvest mode has been completed the water solenoid will be activated 2 The amount of water is adjusted by pressing the Fill Key repeatedly This changes the time allowed for fill as illustrated in the table below Water supply amount TABLE STAGE TIME TO SUPPLY INDICATIONS REMARKS 1 5 mm The water amount will vary depending 2 5 5 sec on the water control switch setting as FIRST STAGE well as the water pressure of the connected water line 3 6 sec 42 ICEMAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR 2 5 Function TEST 1 This is a forced operation for TEST Service cleaning etc It is operated by pressing and holding the Water amount selection button for 3 seconds 2 The test works only in the Icemaking Mode It cannot be entered from the Harvest or Fill mode If there is an ERROR it can only be checked in the TEST mode 3 Caution If the test is performed before water in the ice tray is frozen the ejector will just pass through the water When the Fill mode begins Stage 4 unless the water supply has been shut off added water will overflow into the
40. temperature display of other household electrical appliances 2 1 4 Lock function 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 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 2 1 5 Filter condition display 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 replacing 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 LIGHT FILTER IZ mm D num 821 MONT AL MONTH HOLD 3SECS 18 MICOM FUNCTION 2 2 Dispenser use selection You can select water or ice dE DISPENSER Please select water slice ice and square ic
41. that it comes from the compressor when the refrigerator starts When the refrigerator operates the piston and motor in the compressor rotate at 3600RPM This sound is caused by the vibration of motor and piston when they start and finish their operation This phenomena can be compared with that of cars When the car engine ignites and starts to rotate the loud sound becomes gradually quiet When the engine stops it stops with vibration Vibration sound H Check the sound whether it comes from the pipes vibration and friction Insert rubber or leave a space between pipes to avoid the noise Fix the fan blade if the noise is due to the collision of fan and shroud Fix the drip tray if it is loosened E Sound depends on 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 f the refrigerator is not leveled properly a small vibration can make loud sound Please adjust the level of the refrigerator 79 TROUBLE DIAGNOSIS Problems Checks and Measures Sounds of water flowing B 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 characteriistics of moving parts This noise comes from the MICOM controller s switc
42. to disconnect 1 Disconnect funnel and button assembly by pulling down 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 flat blade screwdriver and pulling it forward The cover dispenser is attached with a hook Solenoid Assembly Duct Cap Assembly 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 the dispenser Then attach the holder at the solenoid 3 The display assembly can be connected by pressing the itch switch top of the dispenser cover and pushing it after separating the display frame from its housing Sheath Heater 87 HOW DISASSEMBLE AND ASSEMBLE 7 Dispenser Related Parts FRAME ASSEMBLY DISPLAY COVER DISPENSER DECO FRAME DISPLAY PWB PCB ASSEMBLY DISPLAY FUNNEL ASSEMBLY MICRO SWITCH 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 NOTE Not every model includes e
43. 1JA3004D Packing e23x3t 3920JA3001A 2 4932JA3003C Conversion Connector W28 6631JA3004E No Holes Balance Conector W28 6631JA3004F Packing e26x3t 3920JA3001C Connector MECH Pipe 4932JA3003D Conversion Connector 1 2 6631JA3004G No Holes Balance Conector 1 2 6631JA3004H Packing e19x3t 3920JA3001D sq HOW INSTALL REFRIGERATOR 1 Connection of Pipe Connector A and Caution Feed pipe should be connected to cold water 1 Turn off main valve of water pipe line If it is connected to hot water line trouble 2 Disconnect water tap from piping by loosening nuts MAISON 3 Connect pipe connector A to piping after sealing ki Please check rubber packing when connecting the pipe connector with sealing tapes feed pipe 4 Connect feed valve to pipe connector A 5 If there is only one tap water pipe connect pipe connector A only and install feed pipe Single Lever Type Faucet General Type general Single Lever Type Faucet one hole tech type and hand spray How to wind Sealing Tapes 2 Water Supply 1 After the installation of feed water plug the refrigerator 2 Check leakage at connecting part then arrange water to the earthered wall outlet press the water dispenser tube and locate the refrigerator at its regular place if button for 2 3 minutes and confirm that the water there is no leaking comes out
44. 2 Freezer compartment sounds rr Fan motor sound Normal operating sound Vibration sound Aged rubber seat Bad torque for assembling motor bracket contact Shroud burr contact Damping evaporator contact Residual frost contact JE Poor treatment Cord heater Narrow evaporator interval Sounds from fan Fan guide contact Unbalance fan sounds Unbalance Surface machining conditions m Fan distortion Misshappen Burr Ice on the fan Air intake opposite to motor rubber assembly I Motor shaft Supporter disorted contact sounds Tilted during motor assembly m 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 52 TROUBLE DIAGNOSIS 9 Faulty internal voltage short Loosened by vibration 3 Bad lamp socket m Disconnection Bad soldering Bad rivet contact Short Water penetration Low water level in tray r Bad elasticity of contact Bad contact corrosion 4 Door switch Its own defect
45. 2 1 Start Position 1 After POWER OFF or power outage check the EJECTOR s position with MICOM initialization to restart 2 How to check if it is in place Check HIGH LOW signals from HALL SENSOR in MICOM PIN 3 Control Method to check if it is in place 1 EJECTOR is in place Itis an initialized control so the mode can be changed to icemaking mode 2 EJECTOR isn t in place A If EJECTOR is back in place within 2 minutes with the motor on it is being initialized If not go to Step B B Control the heater using the temperature sensor until the EJECTOR reaches the correct location 2 2 Icemaking Mode 1 Icemaking refers to the freezing of supplied water in the ice tray Complete freezing is assured by measuring the temperature of the Tray with Icemaking SENSOR 2 Icemaking starts after completion of the water fill operation 3 The Ice Making function is completed when the sensor reaches 19 F 7 C 55 minutes after starting NOTE After Icemaker Power is ON the Icemaker heater will be on for test for 6 sec 2 3 Harvest Mode 1 Harvest Ice removing refers to the operation of dropping ices into the ice bin from the tray when icemaking has completed 2 Harvest mode 1 The Heater is ON for 30 seconds then the motor starts 2 The feeler arm senses the quantity of ice in the ice bin while rotating with the EJECTOR A ice bin is full The EJECTOR stops heater off B ice bin is not full The EJECTOR rotates twice to
46. Contact distance m Refrigerator and freezer switch reversed Button is not pressed Poor door attachment Door liner dimension Contraction inner liner r Misalignment Bad terminal connection P U liquid leak W Check the fan motor conduction OK No conduction NG 48 TROUBLE DIAGNOSIS CLAIMS CAUSES AND CHECK POINTS HOW TO CHECK 3 Refrigeration is weak 4 No cooling air circulation Faulty fan motor Fan is constrained Small cooling air Insufficient discharge motor RPM Shorud and forei Fan shroud contact Clearance Damping evaporator contact Accumulated residual frost r Fan overload Fan misuse Rated power misuse Low voltage Faulty fan Fan misuse shape Loose connection Not tightly connected Insert depth Bent ign 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 nsufficient compressor Faulty compressor No contact of temperature controller Foreign materials 8 Damper opens continuously Foreign materials P U liquid dump jammed EPS water sediment Screw Failed sensor Posi
47. E ASSEMBLY CONDENSER gt JOINT ASSEMBLY WIRE Copper Brazer Copper Brazer Coppper Brazer Silver Brazer 78 TROUBLE DIAGNOSIS 4 HOW TO DEAL WITH CLAIMS 4 1 Sound Problems Checks and Measures Whizz sounds E Explain general principles of sounds All refrigerator when functioning properly have normal operating sound The compressor and fan produce sounds There is a fan in the freezer compartment which blows cool air to freezer and refrigerator compartments Whizz sounds are heard when the air passes through the narrow holes into the freezer and refrigerator compartments E 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 3600RPM The sound of compressor operation becomes louder as the refrigerator capacity increases Click sounds E 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
48. H 4 wires Display PCB DC 12V Main MICOM LCD LED dedicated MICOM GND Transmission error status Reception notch status 1 GC P227 L227 r 4 HEATER SHEET 2 DUCT DOOR erd 314 MICOM 412 5 43 R26 P42 T Y 54 a EE ZDI 5 23 104 5 6V 0 5W a i x LX 6 lt 44 1 3 P43 7 Hm 9 06 re Zea GG TNT 1 ROOM TEMPERATURE ly ANAE __ DOOR ALARM HIRA TAT GE 5 HOLD 3SECS EXPRESS FRZ DISPENSER FREEZER REFRIGERATOR LIGHT FILTER ALARM LOCK 38 EXPLATION FOR MICOM CIRCUIT 2 Sensor resistance characteristics table Measuring Temperature C Freezing Sensor alk a E Defrost sensor Ambient sensor 20 C 22 3 77 15 C 16 9 KQ 60 15 C 13 0 KQ 47 3 KQ 5 C 10 1 KQ 38 4 KQ 0 C 7 8 KQ 30 5 6 2 24 1 10 4 9 19 5 kQ 15 C 3 9 kQ 15 9 kQ 20 C 3 1 KQ 13 25 C 2 5 11 30 C 2 0 kQ 8 9 kQ 40 C 1 4 6 2 KQ 50 C 0 8 kQ 4 3 gt Resistance value allowance of sensor is 5 gt When measuring the resistance value of the sensor allow the temperature of that sensor to stabilize for at least minutes before measuring This delay
49. MBLY 4 Separate the Mechanical Cover and Valve Screw METHOD 1 Turn off the power of the refrigerator pull out the plug Open the FREEZER and REFRIGERATOR Door and disassemble the Lower Cover ou 2 Lay a dry towel on the floor and get ready to spill water from the water tank Pull out the Clip Then press the collet to separate the tube from the connector and pour out the water until emptied Refer to the label attached on Front L on how to separate the tube 5 FAN AND FAN MOTOR DISASSEMBLY Collet METHOD Tube 1 Using a short screwdriver loosen one SCREW in DRAIN PIPE ASSEMBLY and one connected to the MOTOR COVER Insert Line DRAIN PIPE ASSEBLY MOTOR COVER Clip 2 Pull and separate the FAN ASSEMBLY and MOTOR turning counterclockwise based on the MOTOR SHAFT FAN ASSEMBLY MOTOR 3 Turn off the water Then separate the water line from the valve The assembly is in the reverse order of the disassembly and take special care for the following details 1 Be careful not to bend the tube during assembly 2 Press the WATER DISPENSER button until water pours out and check for leakage in the CONNECTOR TUBE It differs by the water pressure but usually takes about 2 minutes until water pours out 86 HOW DISASSEMBLE AND ASSEMBLE 6 DISPENSER 4 Loosen four screws with a phillips screwdriver and pull the funnel assembly
50. N O STANDARD RPM O O TR AND RECEIVING PART ABNORMAL AMBIENT SENSOR SHORT 9 AMBIENT SENSOR NORMALIDISPLAY NOTET CIRCUIT ABNORMAL WATER TANK SENSOR 10 WATER TANK SENSOR NORMAL DISPLAY NOTE2 SHORT CIRCUIT O 9 ABNORMAL MAGIC ROOM SENSOR 11 magic ROOM SENSOR NORMAL DISPEAY NOTE SHORT CIRCUIT All LCDs 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 Note1 Note2 23 MICOM FUNCTION ALL DISPLAY PARTS TURN OFF OTHER THAN FREEZER ROOM NOTCH TEMPERATURE DISPLAY AND REFRIGERATOR ROOM NOTCH IN CASE OF INDICATING FAILURE MODES EXCEPT FOR NOTE1 NOTE2 NOTE1 FREEZER ROOM NOTCH TEMPERATURE DISPLAY AND REFRIGERATOR ROOM NOTCH TEMPERATURE DISPLAY FAILURE CODE INDICATION PART ARE NORMALLY INDICATED IN ABNORMAL AMBIENT SENSOR AND Er INDICATED ON THE AMBIENT TEMPERATURE DISPLAY EXCEPT FOR THE AMBIENT TEMPERATURE DISP NOTE 2 R2 SENSOR WATER TANK SENSOR AND MAGIC ROOM SENSOR 15 NOT INDICATED ON THE FAILURE INDICATING PART BUT IN URE DISPLAY FAILURE CODE INDICATION PART LAY OTHER DISPLAY PARTS ARE INDICATED NORMALLY DICATED IN CHECKING ALL DISPLAY PARTS WHEN PRESSING FOR MORE THAN THE BUTTON OF FREEZING TEMPERATURE AND QUICK FREEZING BUTTON FOR MORE THAN 1 SECOND r R2 SENSOR MIDDLEROOM NORMAL
51. N4004 2 3 P72 T 1 RY2 712812 Whee red TANG C R LAMP LOWER pura CON3 ALDIIZ PIPE HEATER IE 5 O 1 2 lt pm LI Pa CO b EO a 9 1 1 6 DISP HEATER Zes d ALEISBIZ 25 lt 7 me ik DI DEEI SSI 7 id SZ ol gle ie GE 5 un LI ALZIZBIZ O 3 iP ol 11 _ Pr 8 KA Ja 09 9 KID65003AF LJ 1 l y INM004 ox 1 9 PO 8 28 FOR MICOM CIRCUIT 1 5 Dispenser operation circuit 1 GC P227 L227 93 POWER EI MA 5 EI d 6 2 ae loc CON4 RYB LLL ALEISBIZI AUGER MOTOR LI i i ix 00 7 A UT 1 004 2 Hie ite NR EEE TE Z i and lt WATER CO i PILOT Q_ gt 7 lt L SOLENOID cn DISPENSER EE Cf peep tateetako 1 H BAR HEATER POON ee E a h a ES d 10 i dB INMo07 148 1 Check load driving status WATER VALVE dar GEARED SOLENOID PILOT SOLENOID MOTOR BE DISPENSER OTO CU Wate VALVE SPENS Measuring part 1 7 15 1 7 14 IC7 13 IC7 12 IC7 11 ON Within 1 V Status OFF 12V 2 Lever Switch sensing circuit Measuring part IC1
52. OMTEMPERATURE KO 71 719 DOOR ALARM a a an LLA OF LL OF H IE HOLD 3SECS DISPENSER FREEZER REFRIGERATOR LIGHT FILTER ALARM LOCK Expres Freezer o Door Alarm Button Selection Button Lock Button Dispenser Dispenser Light On Off Button Selection Button Filter Status Display RESET Button Temperature Adjust Button Temperature Adjust Button For Freezer Compartment For Refrigerator Compartment 1 2 Display Second Function So F moe Wo uu up ROOM TEMPERATURE uj ve DT DOOR ALARM Gy E bebe I KONIN EAE Go a HOLD 3SECS EXPRESS FRZ DISPENSER FREEZER REFRIGERATOR LIGHT FILTER ALARM LOCK Buzzer Mute Mode Display Power Saving Mode 1 Door Alarm Buzzer Mute Mode Press ALARM LOCK to turn the buzzer on or off 2 Display Power saving Mode It places display in standby mode until door is opened Press FREEZER and EXPRESS FRZ buttons simultaneously to turn all LEDs ON and then OFF with the recognition sound of Ding after 5 seconds Be sure not to press only one button to work 16 MICOM FUNCTION Once the mode activates the display is always OFF Until door is opened or display button is pressed When 20 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 Exhibit
53. ROUBLE DIAGNOSIS 3 2 Summary Of Heavy Repair Process Contents Tools Trouble diagnosi Remove beti Residuals Cut charging pipe ends and discharge refrigerant from drier and compressor Filter side cutters Parts replacement and welding Use R134a oil and refrigerant for compressor and drier Confirm N2 sealing and packing conditions before use Use good one for welding and assembly Weld under nitrogen gas atmosphere N2 gas pressure 0 1 0 2kg cm Repair in a clean and dry place Pipe Cutter Gas welder Nz 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 min Vacuum pump R134a exclusively Manifold gauge Refrigerant charging and charging inlet welding Weigh and control the allowance of R134a bombe ina vacuum conditions to be 5 g with electronic scales and charge through compressor inlet Charge while refrigerator operates Weld carefully after inlet pinching R134a exclusive bombe mass cylinder refrigerant R134a manifold gauge electronic scales punching off flier gas welding machine Check refrigerant leak cooling Check leak at weld joints Minute leak Use electronic leak detector L Big leak Check visually or fingers Note Do not use soapy water for check
54. SOR EARTH PART ASSEMBLY R LAMP R LAMP BK BLACK YL YELLOW SB SKY BLUE BN BROWN GN GREEN PK PINK BO BRIGHT ORANGE PR PURPLE GN YN GREEN YELLOW A4 GY GRAY RD RED WH WHITE WH BK WHITE BLACK BL WH BLUE WHITE RD WH RED WHITE TROUBLE DIAGNOSIS 1 Trouble Shooting CLAIMS CAUSES AND CHECK POINTS HOW TO CHECK 1 Faulty start 1 No power on 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 connection between plug and adapter faulty plug The distance between pins Pin outer diameter 3 Shorted start circuit power cord Faulty soldering Internal electrical short Faulty terminal contact Loose contact Large distance between male terminal Thin female terminal Terminal disconnected Bad sleeve assembly L Disconnected Weak connection Short inserted cord length Wom out tool blade LOLPisof Capacity of O L P is small L Characteristics of O L P is bad Bad connection Poweris Inner Ni Cr wire blows out disconnected Bad internal connection Faulty terminal caulking Cu wire is cut Bad soldering r No electric power on compressor Faulty compressor Power does
55. ST MODE 2 STATUS LCD gt 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 Function allowing ice and water to come stops if freezing room doors are opened If there is no Off signal even when 3 minutes have passed while pressing the 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 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 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
56. al state 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 GC P227 L227 OW MICOMI l urne 3 2 RESET 2 Gi CCB 104 d 77 d 27 FOR MICOM CIRCUIT 1 4 Load dispenser operation door opening circuit 1 LOAD DRIVING CIRCUIT 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 B and D of door switch for the freezer or refrigerator are connected to the door open sensing circuit in parallel 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 of Load Defrost AC Converting Refrigerator Dispenser yP Relay LAMP Heater Measuring part IC6 IC6 16 IC6 13 IC6 12 IC6 15 IC6 14 2 ON Within 1 V tatus OFF 12V 1 GC P227 L227 eea A CON2 ices 9 KID65003AF ALEISBI2 29 ik 5 EA 1T I
57. de door shall not be easily closed Adjust the level of refrigerator with levelling screws 83 HOW DISASSEMBLE AND ASSEMBLE 1 DOOR 1 Remove lower cover and then disconnect water supply tube in the lower part of freezer door Pull a water supply tube forward while pressing 1 part to disconnect water supply tube as shown below A 2 Remove a freezer door 1 Loosen hinge cover screw of freezer door and remove cover Disconnect all connecting lines except earthing cord Cover Hinge Connecting Line Earthing Cord 2 Turn hinge lever in arrow direction until it is loosened and take it out in arrow direction Lever Hinge Note e When disconnecting refrigerator door turn hinge lever counterclockwise e If hinge lever or bracket hinge pin is deformed during assembling freezer and refrigerator doors fix two screws Tap Tite Screw M6 Hinge L fixing screw in the hole of upper hinge 3 Disconnect upper hinge from a hinge supporter 2 by grasping the front part of upper hinge and lifting up Hinge Assembly U in arrow direction and pull forward in arrow B direction Be careful as the door may be fallen down 4 Lift up the freezer door 1 in arrow direction and disconnect the door from the lower hinge 2 Don t pull a door forward Note Lift up a freezer door until a water supply tube is fully taken out 5 Assembly is the re
58. der of veg gt cheeze gt meat gt veg Provided that selected notch LED turns off if opening doors of the R room and it turns off if closing doors of R room 2 Temperature of the miracle zone is controlled with a stemping damper at the left side of the miracle zone and controlled with a miracle zone at the rear side of miracle zone 3 Change of the notch by temperature control S W at the miracle zone is controlled after 10 seconds have passed after selecting final notches 4 Miracle zone damper is forcedly closed during test mode or defrost mode 2 9 Control of variable type of freezing room fan Miracle Zone NOTCH meat cheeze veg Setting Indication 1 C 2 C 4 C 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 super freezing 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
59. e by pressing O button as you desire Please press the push button lightly by catching and pushing in cup The border line 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 EG 55 Bag Pressing REFERENCE Please wait for 2 3 seconds in order to take final ice slices or drops of mum water when taking out cup from pressing switches after taking ice or water 2 3 Automatic ice maker The automatic ice maker can automatically make 8 pieces of ice cube at a time 80 pieces a day But these quantities may be varied according to various conditions including how many times the refrigerator door opens and closes Ice making stops when the ice bin is full If you don t want to use automatic ice maker change the ice maker switch to ON OFF If you want to use automatic ice maker again change the switch to OFF ON NOTE It is normal that a noise is produced when ice made is dropped into the ice bin 2 4 When ice maker does not operate smoothly Ice is lumped together When ice is lumped together take the ice lumps out of the ice bin break them into small pieces and then place them into the ice bin again When ice maker produces too small or lumped together ice the amount of water supplied to the ice maker need to adjusted Contact the service center If ice is not used frequently it may lu
60. e crushing and hitting ice bank sounds are heard 80 TROUBLE DIAGNOSIS 4 2 Measures for Symptoms on Temperature Problems Checks and Measures Refrigeration is weak H Check temperature set in 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 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 The food in the chilled drawer is not frozen but defrosted Bi The chilled drawer does not freeze food Use chilled drawer for storing fresh meat or fish for short periods For storing for a long 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 H Check the water storage location f water is kept in the door rack please ask to keep it in the refrigerator compartment shelf It will then become cooler Ice cream softens E Explain the characteristics of ice cream The freezing point of ice cream is below 15 C 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 s
61. e the weight of an evacuated bombe with an electronic scale Charge refrigerant into a bombe and measure the weight Calculate the weight of refrigerant charged into the bombe by subtracting the weight of an evacuated bombe Indicate the weight of KEYPOINTING an evacuated bombe Be sure to charge the refrigerant at around 25 C Be sure to keep 5g in the winer and 5g in summer Calculation of amount of refrigerant charged the amount of refrigerant charged a weight after charging a weight before charging a weight of an evacuated cylinder 76 TROUBLE DIAGNOSIS Items Precautions Evaporator Compressor Condenser 4 Refrigerant Charging Charge refrigerant while operating a compressor as shown above 5 Pinch a 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 Take a leakage test on the welded or suspicious area with an electronic leakage tester 7 Pipe arrangement Check each pipe is placed in its original in each cycle place before closing a cover back M C after completion of work Particularly control the size of Joint Drain Pipe 3 5 Standard Regulations For Heavy Repair 1 Observe the safety precautions for gas handling 2 Use JIG or wet towel in order to prevent electric wires from burning
62. ea Use standard electrical components when replacing them Make sure the hook is correctly engaged Remove dust and foreign materials from the housing and connecting parts 8 10 11 12 13 14 Do not fray damage machine heavily bend pull out or twist the power cord Please check the evidence of moisture intrusion in the electrical components Replace the parts or mask it with insulation tapes if moisture intrusion was confirmed Do not touch the icemaker with hands or tools to confirm the operation of geared motor Do not let the customers repair disassemble and reconstruct the refrigerator for themselves It may cause accident electric shock or fire Do not store flammable materials such as ether benzene alcohol chemicals gas or medicine in the refrigerator Do not put flower vase cup cosmetics chemicals etc or container with full of water on the top of the refrigerator Do not put glass bottles with full of water into the freezer The contents shall freeze and break the glass bottles When you scrap the refrigerator please disconnect the door gasket first and scrap it where children are not accessible SPECIFICATIONS 1 Ref No GC P227 1753 lt Front View gt ITEMS SPECIFICATIONS ITEMS SPECIFICATIONS DIMENSIONS mm 894 W x790 D x1753 H FIRST DEFROST 4 5
63. ead wire associated with door Repair lead wire Check model continuously rings or door opening alarm does not work main PCB to door switch switch Defective freezer compartment door switch parts Refer to door switch in parts repair guide Replace Freezer compartment door switch Bad water ice dispenser Ice and water are not dispensed Defective connecting lead wire from Main PCB to lever switch Check Lead Wire associated with lever switch with a tester Repair lead wire with dispenser 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 SISONSVIG
64. ead wire of heater is cut 3 Heating wire at lead wire contacts is cut Check the resistance of heater 00 Short 0 Cut Tens to thousands O OK 2 Check the resistance between housing terminal and heater surface 00 Short 0 Cut Tens to thousands Q Short Heating wire is short and wire is cut Parts replacement Refer to parts explanations Seal the lead wire with insulation tape and heat contraction tube if the cut lead wire is accessible to repair Sucking duct and discharging hole are clogged 1 Impurities 2 Ice Confirm foreign materials In case of ice insert the copper line through the 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 3hours 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 sucking duct manually and assemble the disconnected parts Gap between Sucking duct and Heater plate Ice in the gap 1 Confirm in the Sucking 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
65. ed due to simultaneous operation of a lot of parts in applying initial power and completing test Function Load Operation Sequence Remark B Siete If error occurs of a frost remova during operation sensor becomes POWER 03 COMP 03 CAN 93 03 Ze 03 mtel operation more than 45 C 4 ON CFAN DAMPER gt DAMPER gt HEATER not done In purchase ON ON MOTOR ON movement ON 5 2 geie S 0 3 6 0 3 5 0 3 DAMPER 5 DAMPER i frost removal POWER sec FROST ea FROST sec HOME sec HOME sec a load operaron 2 s REMOVAL REMOVAL BAR gt BAR gt eda when closing sensor becomes DUCT DOOR DUCT DOOR 5 ON HEATER HEATER HEATER HEATER HEATER HEATER F room and less than 45 C ON OFF ON OFF ON OFF R room In power failure 8 service a MIRACLE 03 PIPE 5 PIPE 03 0 3 0 3 0 3 03 sec amp sec amp sec COMP sec FFAN sec R STEP sec ZONE sec HOME gt DISP DISP gt amp 1 5 MOTOR gt STEP HEATER HEATER ON C FAN DAMPER DAMPER HEATER ON OFF ON ON dk ON Test mode 1 MIRACLE If pressing switch Compulsory TEST OTHER 03 comp 03 FFAN RSTEP
66. er overflows Clogged discharging hose Discharging hose Evaporation tray located at wrong place location m Tray drip _ Damaged 1 Breaks holes Small Capacity Position of drain 1 Compressor compartment operating sounds r Compressor sound Sound from machine itself inserted Sound from vibration r Restrainer m Rubber Too hard seat er Distorted Aged Burnt m Stopper Bad Stopper Not fit assembly inner diameter of stopper Tilted Not m Compressor base not connected Bad welding compressor stand fallen Foreign materials in the compressor compartment O L P sound Chattering sound Insulation paper vibration Capacitor noise Pipe contacts each other Narrow interval Pipe sound No vibration damper Damping rubber Q Damping rubber S Capillary tube unattached 51 TROUBLE DIAGNOSIS CLAIMS CAUSES AND CHECK POINTS HOW TO CHECK 7 Sounds 1 Compressor compartment operating sounds p Transformer sound Its own fault Core gap Bad connection Correct screw connection Drip tray vibration sound Bad assembly m Distortion Foreign materials inside Back cover machine sound Bad connection L Partly damaged L Condenser drain sound Not connected Bad pipe caulking
67. erating compressor during evacuation evacuated at the same time for models above 2000 Vacuum EA Use R134a To protect The rubber pipes for R12 refrigerant shall piping exclusive mixing of be melted when they are used for R134a manifold mineral and refrigerant causes of leak ester oils Pipe EA Use R134a To protect coupler exclusive R12 Refri gerant mixing Outlet R134a exclusive Socket Plug R134a exclusive 5 Refrigerant weighing EA Use R134a Do not mix Do not weight the refrigerant at too hot or exclusively with R12 too cold an area 25 C is adequate Weighing refrigerant Use copper bombe 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 Use R12 exclusively from pipe for R12 refrigerator Replace drier whenever 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 leak area not found into the pipe by The electronic leak detector is very sensitive to halogen gas in the air It also can detect R141b in urethane Please practice therfore many times before use NOTE Please contact Songso company on 82 53 554 2067 if you have inquiry on heavy repair special facility 2705 T
68. f it is severe especially compressor and pipe 4 Replace compressor stopper if it vibtates severely Irregular sound Click a 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 SISONSVIG 99 Problems Causes Checks Measures Remarks Sound Burping 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 it is 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 boiling or flowing sound It happens when refrigerant passes orifice in
69. h on the top of the refrigerator when it is turned on and off Noise of ice maker operation applicable to model with ice maker Noise produced by ice dropping and hitting ice bank Noise from motor sounds Whizz E Explain the procedure and principles of ice maker operation e Automatic ice maker repeats the cycle of water supplying gt icemaking gt ice ejection When water is supplied the water supply valve in the machine room makes sounds like Whizz and water flowing also makes sound When water freezes to ice freezing sounds such as click click are heard When ice is being ejected sounds like Whizz produced by a motor to rotate an ice tray and ice dropping and hitting ice bank sounds are also heard Noise when supplying water E 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 W Explain the principles of ice supply and procedure of crushed ice making in a dispenser When ice cube button is pressed ice stored in the ice bank is moved by a Helix Pusher and dispensed If crushed ice button is pressed the cube ice is crushed When this happens ic
70. he completely sealed refrigerator compartment Deodorizer can absorb some portions of the odor but not completely The intensity of odor depends on refrigerator conditions and environments H 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 E Explain the basic principles of frost formation The 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 if temperature is 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 B 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 shall freeze and form frost If warm water was put into the ice mold the situation will become worse 82 TROUBLE DIAGNOSIS 4 5 Others Problems
71. heck 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 grille 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 cannot frost on the evaporator but can be sucked into the refrigerator being condensed and iced interferes with cool air circulation and suppresses sublimation 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 SISONSVIG Z9 Problems Causes Checks Measures Remarks Ice in the freezer compartment Surface of fan grille Wall of freezer compartment Cool air discharging port Baske
72. ic Insufficient drier KO drier Drier temperature poweron capacity Leave itin the air Check on package therm conn ostat L Good storage after finishing p Residual moisture Caps are missed During transportation Tipos During work Air blowing Not performed Performed Too short time Low air pressure Less dry air Moisture penetration Leave it in the air Moisture penetration into the refrigeration oil E The evaporator does not cool Short pipe insert from the beginnig no evidece GE GO Pipe gaps Too large of misture attached c oggea rda pipes The evaporator is the same Too much solder as before even heat is applied The capillary tube inserted depth Too much Drier cloggeing 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 Foreign materials are in the pipe 46 TROUBLE DIAGNOSIS CLAIMS CAUSES AND CHECK POINTS HOW TO CHECK 3 Refrigeration is weak 1 Refrigerant Partly leaked Weld joint leak Parts leak 2 Poor defrosting capacity r Drain path pipe clogged generate heat Inject P U into drain hose penetration HDefrost heater does not Parts Heater disconnected Sheath m Inject through the hole
73. ice bin If the control doesn t operate normally in the TEST mode check and repair as needed 4 After water is supplied the normal CYCLE is followed icemaking Harvest Fill Park Position 5 After Stage 5 is completed the Ice Maker returns to MICOM control The time needed to supply water resets to the pre test setting 6 This icemaker function test takes about 90 seconds in case there aren t ices in the ice tray If there are ices in the ice tray it can take more than 90 seconds Diagnosis TABLE STAGE ITEMS INDICATOR REMARKS 5 Five seconds after heater starts 1 HEATER heater will go off if the temperature by sensor is higher than 10 C E 2 MOTOR Five seconds after heater staris you can confirm that a motor is moving HALL IC I After the icemaker detects that ice has been 3 detection of made the motor and heater are off but on position standby until the cycle is cancelled HALL IC II You can confirm HALL IC detection of 4 detection of position position 5 VALVE Two seconds after detection of initial position you can confirm that valve is on 6 Reset Return to Status prior to Five seconds after fifth stage is completed TEST MODE The icemaker resets to initial status 3 Defect diagnosis function 3 1 ERROR CODES shown on Icemaker water supply control panel NO DIVISION INDICATOR CONTENTS REMARKS Ma
74. ion Mode Demo mode is available for displaying the refrigerator in a sales setting or similar condition It allows the display dispenser lights and fan to operate without running the compressor To enter the DEMO mode press and hold the REFRIGERATOR and EXPRESS FRZ buttons simultaneously for 5 seconds until the Ding sounds To exit the DEMO mode and return to normal operation press and hold the REFRIGERATOR and EXPRESS FRZ buttons simultaneously for 5 seconds until the Ding sounds again The refrigerator will default to the NORMAL mode DEMO mode OFF if the power fails 2 Description of Function 2 1 1 Funnction of Temperature Selection Division Power Initially On 1st Press 2st Press 3th Press 4th Press Temperature Medium Medium Max Max Min Medium Min Control Freezer Control 19 C 22 C 23 15 17 Refrigeration 3 C 2 C 0 C 6 C 4 C Control The temperature can vary 3 C depending on the load condition Whenever pressing button setting is repeated in the order of Medium Medium Max Max Min Medium Min e 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 17 MICOM FUNCTION 2 1 2
75. ire terminals Reconnect Lead display LCD between Main PCB main PCB and display connecting Main PCB and Wire and directly operation and display circuit PCB is cut or connector display PCB with a tester connect defective terminal connection is contact terminal to bad Lead Wire Defective LCD Defective LCD Check if all LCD are on when Replace display Refer to display Main PCB Test switch is PCB circuit in circuit pressed or when both freezer key and power freezer key are pressed at the same time for more than one second explanation SISONSVIG 3 18nou8 L 89 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 389 after pressing main PCB and 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 Freezer sensor is substituted for other sensor Confirm the color of sensor in circuits main PCB sensor housing Repair main PCB
76. lo d OO SEO 7 ZO 1 1 1 1 1 18 AI06S OO Fr 8 102 RI 1 1 012 19 ADE 2 9 103 RIO3 l ie 1 1 eiz T 1 1 1 Cf O 1 I I I I 1 1 1 1 1 1 1 1 1 1 1 1 I 40 ICEMAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR 1 Operation Principle 1 1 Operation Principle of Icemaker Power On Start Position Adjusts EJECTOR to Start Position with power on Icemaking Harvest Mode Waits until water becomes ice after starting the icemaking operation Runs MOTOR to drop ice from the tray into the ICE BIN During harvest mode check if the ice bin is full Performs Ice Making Mode after supplying water by operating the SOLENOID in ICE VALVE Park Position ww vy vy p With the detect lever checks if the ICE BIN is full amount selection button for 3 seconds The icemaker will run through 3 stages Harvest Fill Icemaking Test Mode b operate LINE and SERVICE press and hold the Water 1 Turning the Icemaker switch off O stops the ice making function 2 Setting the Icemaker switch to OFF and then turning it back on will reset the icemaker control EJECTOR Water Amount Indic ator Light Water Amount Power Feeler Selection Button Switch Arm 41 ICEMAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR 2 ICEMAKER FUNCTIONS
77. mp together Power failure may drop into the freezer compartment Take the ice bin out and discard all the ice then dry it and place it back After the machine is powered again crushed ice will be automatically selected The unit is newly installed It takes about 12 hours for a newly installed refrigerator to make in the freezer compartment 2 5 Express Freezer Please select this function for prompt freezer s s raz e On or Off is repeated whenever pressing O button e The arrow mark graphic remains at the On status after flickering 4 times when selecting Special Refrigeration On e Super freezer function automatically turns off if a fixed time passes EXPRESS FRZ 2 6 Lock This button stops operation of different button ALARMILOCK Locking or Release is repeated whenever pressing the Pressing the other button when selecting ALARM LOCK the button does not operate ALARM LOCK 19 MICOM FUNCTION 2 7 Super freezing 1 EXPRESS FRZ freezing is a function to increase the cooling speed of the freezer compartment by running both the compressor and the fan simultaneously 2 EXPRESS FRZ is cancelled and the refrigerator returns to its default setting in the event of a power interruption 3 SelectingEXPRESS FRZ changes only the speed of the cooling without affecting the set temperature 4 The temperature can be adjusted even when EXPRESS FRZ has been selected a
78. nd is in progress 5 The freezer operates at whatever temperature was set at the time EXPRESS FRZ was selected 6 If you select EXPRESS FRZ the compressor and fan will run until it is deselected or the cycle time has elapsed 3 hours compressor and fan run 3 24 hours COLDEST operation 7 If a defrost cycle occurs while an EXPRESS FRZ is already running EXPRESS FRZ runs for its remaining cycle time after the defrost cycle is completed If the defrost cycle takes longer than 30 minutes EXPRESS FRZ will run for only 2 hours at the end of the defrost cycle 8 If you press EXPRESS FRZ during a defrost cycle the EXPRESS FRZ indicator LCD or LED depending upon the model will illuminate but the compressor will not operate until the defrost cycle is complete 9 If you press EXPRESS FRZ within 7 minutes of compressor cut off the compressor will not operate until the 7 minute delay has passed 10 The freezer fan motor runs at high speed during the EXPRESS FRZ cycle 2 8 Miracle Zone function 1 Miracle Zone is located at the bottom room of R room and maintains optimum temperature depending on foods through selection of desired foods kept in the Miracle Zone from vegetables to meat with a display Set temperature in the Miracle Zone by using a separate selection button at the right side of the Miracle Zone Initial notch is in veg status in application of power Whenever pressing buttons notch changes while LED is displayed in the or
79. ng a drier When replacing a compressor Weld 2 parts by blowing nitrogen to the low pressure side Note For other parts nitrogen blowing is not necessary because it does not produce oxidized scales inside pipe because of its short welding time 3 Replacement of drier KEYPOINTING Be sure to check the inserted length of capillary tube when it is inserted If too much inserted a capillary tube is clogged by a filter Filter Inserting a capillary tube Measure distance with a ruler and put a mark 12 3 0 on the capillary tube Insert tube to the mark and weld it 75 TROUBLE DIAGNOSIS Items Precautions 4 Vacuum degassing Evaporator Suction pipe EZ Compressor Drier 1 Condenser High Blue pressure Wy A KEYPOINTING If power is applied during vacuum degassing vacuum degassing shall be more effective A f Operate compressor Connect a red hose to the high pressure side and a blue hose to the while charging low pressure side refrigerant It is easier and more certain to do like Open D valves and evacuate for 40 minutes Close valve 1 this Pipe Connection Vacuum Sequence 5 Refrigerant charging Charging sequence 1 Check the amount of refrigerant supplied to each model after completing vacuum degassing 2 Evacuate bombe with a vacuum pump 3 Measure the amount of refrigerant charged Measur
80. not conduct Damage Bad characteristics Initial resistance is big Bad connection with 9 loose compressor Assembly is not possible Bad terminal connection Faulty PTC 4 During defrost pou automatic defrost Cycle was set at defrost when the refrigerator was produced m power on p Disconnected copper wire Power cord is disconnected Measuring instrument Multi tester E Check the voltage If the voltage is within 85 of the rated voltage it is OK li Check the terminal movement E Check both terminals of power cord Power conducts OK No power conducts NG E Check both terminals of O L P If power conducts OK If not NG E Check the resistance of both terminals At normal temperature 6 OK If disconnected co 45 TROUBLE DIAGNOSIS CLAIMS CAUSES AND CHECK POINTS HOW TO CHECK 2 No cooling 2 Refrigeration system is clogged E Check the clogged pj Moisture Residual moisture Air Blowing Not performed evaporator by heating as clogged in the evaporator Too short soon as the cracking sound BIN begins the evaporator start Impossible moisture freezing confirmation 9 Low air pressure Leave it in the air During rest time After work Caps are missed Residual moisture Not dried in the compressor r Elapsed more than 6 months after drying Caps are missed No pressure when it is open No electr
81. r hot line pipe is warm If it is warm it s OK If it is not condenser outlet weld joints might be colgged Heat up compressor discharging weld joints with touch disconnect the pipes and check the clogging Remove the causes of clogging weld evacuate and recharge the refrigerant If it s warm it s OK If it s not condenser discharging line weld joints might be clogged Disconnect with torch remove the causes evacuate and recharge seal refrigerant Direr must be replaced Leak at loop pipe weld joint discharge in compressor Check sequence 1 Manually check whether condenser is warm It is 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 Refer to fan motor disassembly and assembly sequence SISONSVIG 69 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 L
82. rials 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 Assembly 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 SISONSVIG 318nou8 L 0 4 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 RY 3 or PCB driving conditions PCB test switch twice check in circuit If the voltage is normal then it is OK explanation Defec
83. rk time to Display switch 1 Normal supply None operates properly Icemaking Make sure that the wire 2 Sensor Open or short circuited wire on each sensor is malfunction connected ERROR indicators in table can be checked only in TEST mode 49 CIRCUIT 1 GC P227 L227 CIRCUIT DIAGRAM DELUXE H BAR PART H BAR HEATER DOOR S W CAPACITOR PART PLUG TYPE P T C ASSEMBLY PART COMPRESSOR EARTH PART PILOT VALVE S W PART MIRACLE ZONE WATER TANK SENSOR ON CIRCUIT DIAGRAMS ARE SUBJECT TO CHANGE IN DIFFERENT LOCALITES AND ACCORDANCE WITH MODEL TYPE N NEUTRAL H BAR DOOR SWITCH PWB ASSEMBLY MAIN F FAN M MOTOR BLDC C FAN MOTOR BLDC WE F DOOR OPEN PERCEPTION DEFROST SENSOR lf F SENSOR MAGIC ROOM DISPLAY CON102 WH PK 6 5 2 SB 1 3 4 PWB ASSEMB EEI DISPLAY MAGIC ROOM Oz STEPPING MOTOR MAGIC ROOM SENSOR STEPPING MOTOR M R2 SENSOR R1 SENSOR GO R DOOR OPEN PERCEPTION DE HEATER SHEET DAMPER DISPENSER LIGHT BLWH 2 CON6 12
84. 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 Main PCB If the voltage is normal it is OK Replace door switch freezer refrigerator and home bar Replace fan motor Refer to load driving circuits in circuit explanation Faulty defrost Refer to faulty defrost items in trouble diagnosis functions Refer to trouble diagnosis function SISONSVIG 3 18nou8 L 69 Problems Symptom Causes Checks Measures Remarks Bad cooling Wrong Defective Step Motor Check Step Motor Check if Step Motor damper Reconnect lead Refrigerator Damper damper motor and motor and reed switch lead wire temperature reed switch and lead wire are cut with a tester wire are cut Check Step Motor damper part Refer to Step Motor damper in parts repair guide Replace Step Motor damperor refrigerator control box Assembly Check Step Motor damper Motor driving relay in PCB Refer to Step Motor damper in parts repair guide Replace relay or PCB Refer to single motor damper driving circuits in circuit explanation Foreign mate
85. sensors control the temperature in both freezer and the refrigerator The icemaker sensor detects when ice is made The defrost sensor determines both the need for defrosting and the efficiency of the defrost operation See the table below for voltages and checkpoints SENSOR CHECK POINT NORMAL 22 F 122 F IN SHORT IN OPEN Freezing sensor POINT Voltage Defrost sensor POINT Voltage Refrigerator sensor 1 POINT 0 5 V 4 5 V ov 5V Refrigerator sensor 2 POINT D Voltage Magic room Opti Fresh Sensor POINT E Voltage s s EXPLATION FOR MICOM CIRCUIT 1 8 Switch entry circuit The following circuits are sensing signal form the damper motor reed switch for testing and diagnosing the refrigerator 1 GC P227 L227 R25 P35 38 4 7K swi O IMICOM B 1 9 Option designation circuit model separation function 1 GC P227 L227 ex OPI erro i 6 C 2 02 2 3 37 P24 IMICOM The circuits shown above vary according to which features are included on your particular model Separation Connection Status Application Standard Connection Miracle Zone exist OP1 OUT Miracle Zone don t exist P These circuits are preset at the factory and cannot be altered 32 FOR MICOM CIRCUIT 1 10 Stepping motor operation circuit
86. ser and drip tray 1 Maintain horizontal level 2 Replace rubber and seat if they are sagged and aged 3 Insert rubber where hand contact reduces noise in the pipe 4 Avoid pipe interference 5 Replace defective fan and fan motor 6 Adjust fan to be in the center of bell mouth of the fan guide 7 Leve 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 SISONSVIG FJTaNOUL Y9 Problems Causes Checks Measures Remarks Vibration sound Cluck Vibration of shelves and foods in the refrigerator Pipes interference and capillary tube touching in the compressor compartment 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 compressore 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 rubber and restrainer i
87. t 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 SISONSVIG 69 2 7 Sound Problems Causes Checks Measures Remarks Whizz sound 1 Loud sound of compressor operation 1 1 Check the level of the refrigerator 1 2 Check the rubber seat conditions sagging and aging 2 Pipes resonat sound which is connected to the compressor 2 1 Check the level of pipes connected to the compressor and their interference 2 2 Check rubber 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 rubber 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 conden
88. t rack area Food surface Icing in the shute 1 Bad cooling air circulation Intake port is colgged 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 after 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 attachement 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 set at weak Replace defective parts 4 Bad defrosting Heater wire is cut Faulty defrost sensor Defrosting cycle Check fros
89. ter installing water filter Reassemble the lamp cover and the top shelf of the refrigerator To place the top shelf of the refrigerator raise the front part of the shelf a bit so that the hook of the shelf is fit into the groove In order to clean the water filter system drain water for about 3 min Note Then open the door of the refrigerator and check for water droppings on the shelf under the filter a TOI N 14 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 Water Amount Indicator Light Feeler Arm Power Water Amount Switch Selection Button 1 The automatic icemaker can automatically make 6 cubes at a time 70 120 pieces per day This quantity may vary by circumstance including ambient temperature door opening freezer load etc 2 Icemaking stops when the ice bin is full 3 If you don t want to use the automatic icemaker turn the icemaker switch to OFF If you want to use automatic icemaker again change the switch to ON 4 The water amount will vary depending on the water amount selection button Setting as well as the water pressure of the connected water line NOTE t is normal that a noise is produced when ice drops into the ice storage bin 15 MICOM FUNCTION 1 Monitor Panel 1 1 GC P227 Hu lt IG e Q RO
90. 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 Q cut Reconnect and reinsert Faulty fan motor due to faulty door switch operation Iced button faulty operation Press button to check 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 coils condenser 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 SISONSVIG
91. the new refrigerator Persuade customers not to use plastic bag or wraps with wet food or odorous foods Odor from the deodorizer Odor from the old deodorizer Check the deodorizer odors Dry the deodorizer with dryer and then in the shiny and windy place Remove and replace the deodorants Deodorizer option SISONSVIG 318nou8 L 19 2 9 Micom Problems Symptom Causes Checks Measures Remarks Bad PCB All display Bad connection Bad connector Visual check 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 trans PCB Trans winding is Check resistance of PCB Trans Replace PCB Trans Applicable to cut input and output terminals with or PCB model without PCB Trans temperature a tester If resistance is infinity dispenser fuse is burnt out trans 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 W
92. tion 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 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 very damaged remove the parts and replace it with a new one SISONSVIG 3 18nou8 L 9 2 6 Icing freezer and refrigerator compartment Problems Causes Checks Measures Remarks Icing in the 1 Bad circulation of cool air Check the food is stored properly Be acquainted with how to use Check the defrost refrigerator Clogged intake port in the check discharge and intake port Sealing on connecting parts related parts if problem compartment refrigerator compartment are clogged Check the damper and replace is caused by faulty Damper icing Sealing is not good Check icing on the surface of it if it has defects defrosting Pipe icing Too much food is stored and clogs baffle and cool air path pipe after Check defrost After forced Discharging the discharge port dissembling the container box defrosting check ice in the pipe icing Bad defrosting Check icing at intake ports of evaporator and pipes 2 Faulty door or refrigerator compartment Faulty gasket Faulty assembly Check gasket attached conditions C
93. tion clockwise until the and rotate driver in arrow direction clockwise until the refrigerator becomes horizontal refrigerator becomes horizontal 10 HOW INSTALL REFRIGERATOR 2 How to Install Water Pipe H Before Installation a The icemaker requires the water pressure of 1 5 8 5kgf cm2 It is acceptable if city water fills a cup of 180cc with water for 3 seconds Install booster pump where the city water pressure is below 1 5kgf cm for normal operation of water and ice dispenser 3 The total length of water pipe shall be less than 12m Do not bend the pipe at right angle If the length is more than 12m there will be troubles on water supply due to water pressure drop 4 Please install water pipe where there is no heat around 2 1 When connecting directly to the water tap Bi Please confirm the following installation parts Valve Feed O e Rubber Packing Connector Pipe Mi Connector Pipe Tape Teflon Class Shape and Spec Nomenclature P No Remarks Conve Valve Feed 5221JA3001A Common Use rtible Water Valve Water Connector MECH Pipe 4932JA3003A Conn Conversion Connector 3 4 6631JA3004A No Holes ector Balance Conector 3 4 6631JA3004B Packing o24x3t 3920JA3001B Connector MECH Pipe 4932JA3003B Conversion Connector W25 6631JA3004C No Holes Balance Conectoor W25 663
94. tion of sensor 7 Characteristics Bad characteristics of its own temperatue of damper Parts misuse Charge of temperature Impact characteristics 9 Food storing place Near the outlet of cooling air Bad low termperature RPM characteristics Check visually after disassembly Check visually after disassembly 49 TROUBLE DIAGNOSIS CLAIMS CAUSES AND CHECK POINTS HOW TO CHECK 4 Warm 1 Colgged cooling path refrigerator P U liquid leak compartment Foreign materials P U dump liquid temperature 5 No automatic operation faulty contacts 6 Dew and ice formation 2 Food storate Store hot food Store too much at once Door open L 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 much food Hot food r Frequent opening and closing Cool air leak Poor door close Partly opens 3 Poor insulation 4 Bad radiation 7 High ambient temperature Space is secluded 5 Refrigerant leak 6 Inadequate of refrigerant 7 Weak compressor discharging power Different rating Small capacity 8 Fan does not work 9 Button is positioned at strong 1 Ice in freeezer compartment r Extemal air inflo
95. tive 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 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 display button not ring and key does not sense even button is pressed 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 visually Adjust or replace interfering structures SISONSVIG LZ Problems Symptom Causes Checks Measures Remarks Defective display button Buzzer rings but key does not sense even Trouble mode indication Check trouble diagnosis function Repair troubles Refer to mode indication in function button is explanations pressed Door Buzzer Buzzer Defective connecting lead wire from Check l
96. trong position Refrigeration is too strong H 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 particularly wet and easy to frozen such as bean curd and vegetables away from the outlet Vegetables are frozen H Check the vegetables storage f vegetables 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 H 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 And do not block the outlet If the outlet of the cooling air is blocked the refrigerator compartment will not be cooled 81 TROUBLE DIAGNOSIS 4 3 Odor and Frost Problems Checks and Measures Odor in the refrigerator compartment E Explain the basic principles of food odor Each food has its own peculiar odor Therefore it is impossible to prevent or avoid food odor completely when food is stored in t
97. urns off 4 Stepping motor damper is completely opened open of baffle 5 Miracle zone stepping motor damper is completely closed 6 All display LCD graphics turns on Freezing fan turns off in door opening Test 2 Press test button once at the test mode 1 status forced defrost mode 1 Compressor OFF 2 Freezing bldc motor and cooling bldc motor turn off 3 Defrost heater turns on 4 Stepping motor damper is completely closed closing of baffle 5 Miracle zone stepping motor damper is completely closed 6 All display LCD graphics turns off only LCD turns on for A MIDIUM status B MIDIUM status Return to the normal mode when the defrost sensor is above 5 C Normal Status Press test button once at the test mode 2 status Return to the initial status Compressor will operate after delay for 7 minutes 24 MICOM FUNCTION LCD check function If simultaneously pressing super freezer button and freezing temperature adjustment button for a second a back light is turned on and all display LCD graphics on If releasing the button the LCD graphic displays the previous status the back light is turned off LCD graphic and back light ON OFF check TEST MODE 1 STATUS LCD ei amm oC 2 ami E a o a ero i 0 ROOM TEMPERATURE 121121 C muc 7v DOOR ALARM SEI g HIRA THAT m HOLD 3SECS D lt TE
98. verse order of disassembly 84 HOW DISASSEMBLE AND ASSEMBLE 2 HANDLE 1 Put blade screwdriver into a groove on the side of a Deco handle and lift up a little bit in arrow direction and push up with hand in arrow 2 direction and disconnect Handle Deco 2 Put blade screwdriver into a groove on the side of a DECO handle and lift up in arrow direction 3 and push down with hand in arrow direction 4 and disconnect 3 Push up a piece handle 3 in arrow direction with hand and disconnect 4 Turn screw in arrow direction with a cross driver and disconnect Handle Piece 85 3 SHROUD GRILLE FAN 1 Loosen two screws after disconnecting a cap screw of a grille fan U with a balde screwdriver 2 Disassembly of a grille fan U Pull forward after opening hook at gt part with a blade screwdriver 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 blade screwdriver 7 Disassembly of shroud F U Hold upper part and pull forward 8 Check foam PU sticking conditions around a shroud F U and F L during assembling If damaged torn or badly sticked assemble with a new one after sealing well HOW DISASSEMBLE AND ASSEMBLE 4 WATER VALVE DISASSE
99. very option 88 EXPLODED VIEW FREEZER DOOR PART GC P227 L227 EXPLODED VIEW PART Ref No GC P227 REFRIGERATOR DOOR EXPLODED VIEW FREEZER COMPARTMENT Optional part 92 EXPLODED VIEW REFRIGERATOR COMPARTMENT Optional part 93 EXPLODED VIEW Ref No GC P227K ICE amp WATER PART Optional part 612C 605A 145 EXPLODED VIEW MACHINE COMPARTMENT Optional part es 4 4 SAA EXPLODED VIEW DISPENSER PART Optional part 2 7 Y 7 LG Electronics Inc P No 3828JS8041Z MAR 2006 Printed in China
100. w Rubber motor assembly direction reverse rDooropens Weak door closing power butnotcloses Stopper malfunction Door sag Food hinders door closing r 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 rDooropens Insufficient closing but not closes Door sag Food hinders door closing Gasket gap 3 Condensation on liner foam Coolairleak Not fully filled Toop table part and transmitted Out plate R L part m Flange gap Not sealed Gasket gap E Inspect parts measurements and check visually 50 TROUBLE DIAGNOSIS CLAIMS CAUSES AND CHECK POINTS HOW TO CHECK 6 Dew and ice formation 7 Sounds 4 Dew on door r Dew on the duct door Duct door heater is cut Dew on the dispense Recess Heater is cut recess Duct door is open Foreign material clogging Dew on the door surface Not fully filled T Surface Liquid shortage Cormer 1 Liauidleak P U liquid contraction q Dew on the Bad wing adhesion pwa sag lower gasket surface Door liner shape mismatch Comer qe much notch Broken Home Bar heater is cut 5 Water on the floor r Dew in the refrigerator compartment Defrosted wat

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