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2 . PARTS IDENTIFICATION FREEZER COMPARTMENT Freezer Shelf Lamp Automatic Ice Maker Freezer Door Bin Ice Cube Box Freezer Temperature Door Cooling Control Dial On the refrigerator door , the cold air passageway is REFRIGERATOR installedto supply cold air to the doorside of COMPARTMENT the refrigerator compartment . Temperatureial Control D Egg Tray Lamp Can Server Shelves Dairy Corner Can Storage Egg Box nAdjustable Door Bi Snack Corner Refrigerator Door Crisper Rack Used to keep fruits and vegetables fresh and crisp . Leveling Screw ( Inside ) J Base Grille Push the grille toward the refrigerator until it snaps into place . - 5 -
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3 . DISASSEMBLY 3 - 1 DOOR 3 - 2 DOOR SWITCH • Freezer Door 1 . To remove the door switch , pull out it with a slotted type 1 , Remove the hinge cover by pulling it upwards , driver as shown in ( figure 9 ) , 2 , Disconnect the lead wire from the switch . 2 , Loosen hexagonal bolts fixing the upper hinge to the body and lift the freezer door . LEAD WIRE DOOR SWITCH HINGE COVER HINGE BOLT Figure 9 Figure 6 3 - 3 THERMOSTAT 3 . Pull out the door gasket to remove from the door foam assembly . 1 , Remove Control Box - R by loosening 2 screws attached to coiling of Refrigerator compartment ( Figure 10 ) 2 , Separate the thermostat and dial knob R 3 , Remove the thermostat by disconnecting the lead wire , GASKET Figure 7 • Refrigerator Door 1 . Loosen hexagonal bolts attaching the lower hinge to the body to remove the refrigerator door only . Figure 10 LOWER HINGE BOLT Figure 8 2 , Pull out the door gasket to remove from the door foam assembly . - 6 -
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3 - 4 FAN AND FAN MOTOR 3 - 6 LAMP 1 . Remove the freezer shelf . ( If your refrigerator have an Ice Maker , disassemble the Ice maker first ) REFRIGERATOR ROOM LAMP 2 . Remove the grille by pulling it out and by loosening a screw . 3 . Remove the Fan Motor assembly by loosening 4 screws and disassemble the shroud . 4 . Pull out the fan and separate the Fan Motor and Bracket . Figure 16 - 1 SHROUD _ ' _ , FANMOTOR 3 - 6 - 1 Refrigerator room lamp 1 . Unplug the power cord from the outlet . 2 . Remove refrigerator shelves . 3 . Release the hooks on both ends of the lamp shield and pull the shield downward to remove it . BRACKET 4 . Turn the lamp counterclockwise . FAN 5 . Assemble in reverse order of disassembly . Replacement I I bulb must be the same specification as original . ( Max 40 W ) FREEZER ROOM LAMP Figure 12 3 - 5 DEFROST CONTROL ASSEMBLY Defrost control assembly consists of Defrost Thermostat Figure 16 - 2 and FUSE - M Defrost Thermostat functions to defrost automatically and it is attached to metal side of the Evaporator and senses 3 - 6 - 2 Freezer room lamp Temp . 1 . Unplug refrigerator or disconnect power . Fuse - M is a safety device for preventing over - heating of the 2 . Reach behind light shield to remove bulb . Heater when defrosting . 3 . Replace bulb with a 25 - watt appliance bulb . At the temperature of 77 ° C , it stops the emission of heat 4 . Plug in refrigerator or reconnect power . from the Heater . 1 . Pull out the grille assembly . 2 . Separate the connector connected with the Defrost 3 - 7 CONTROL BOX - R Control assembly and replace the Defrost Control 1 . First , remove all shelves in the refrigerator and Control assembly after cutting the Tie Wrap . ( Figure 14 ) Box - R by loosening 2 screws . & I I COVER LAMP _ @ Figure 17 Figure 13 HOLDER FUSE Figure 14 2 . Remove the Control Box - R by pulling it downward . 3 . Disconnect the lead wire on the right position and seperate timer , themostat , Lamp socket , etc . - 7 -
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4 . ADJUSTMENT 4 - 1 COMPRESSOR 4 - 2 - 3 PTC - Applied Circuit Diagram • According to Starting Method for the Motor 4 - 14 Role The compressor intakes low temperature and low pressure gas evaporated from evaporator of the refrigerator , and OVERLOAD PROTECTOR ( O . L . P ) condenses this gas to high temperature and high pressure gas , and then plays delivering role to condenser . 4 - 1 - 2 Composition PTC _ < _ - _ a _ COMPRESSOR The compressor includes overload protection . The PTC starter and OLP ( overload protector ) are outside the compressor . Since the compressor is manufactured to tolerances of 1 micron , and is sealed in a dust - and moisture - free environment , use extreme caution when repairing it . PTC STARTER HERMETIC TERMINAL 4 - % 3 Note for Usage RSlR Figure 19 ( 1 ) Be careful not to allow over - voltage and over - current . ( 2 ) No Strike If applying forcible power or strike ( dropping or careless 4 - 2 - 4 Motor Restarting and PTC Cooling handling ) , poor operation and noise may occur . ( 1 ) For restarting after power off during normal ( 3 ) Use proper electric components appropriate to the Compressor Motor operation , plug the power cord after Compressor . 5 min . for pressure balance of Refrigerating Cycle and ( 4 ) Note to Keep Compressor . PTC cooling . If Compressor gets wet in the rain and rust in the pin of ( 2 ) During normal operation of the Compressor Motor , PTC Hermetic Terminal , the result may be poor operation elements generate heat continuously . Therefore , and poor contact may cause . if PTC isn't cooled for a while after the power has been ( 5 ) Be careful that dust , humidity , and welding flux don't shut off , the motor will not restart . contaminate the compressor inside when replacing the 4 - 2 - 5 Relation of PTC - Starter and OLP Compressor . Dust , humidity , and flux due to welding ( 1 ) If the power is off during operation of Compressor and which contaminates the cylinder may cause Iockage and noise . the power is on before the PTC is cooled , ( instant shut - off within 2 rain . or unplugging and reconnecting ) , the PTC isn't cooled and a resistance value grows . As a result , current can't flow to the sub - coil , the Motor can't 4 - 2 PTC - STARTER operate , and the OLP operates by flowing over current in only in the main - coil . 4 - 2 - 1 Composition of PTC - Starter ( 2 ) While the OLP repeats on and off operation about 3 - 5 ( 1 ) PTC ( Positive Temperature Coefficient ) is a no - contact times , PTC is cooled and Compressor Motor performs semiconductor starting device which uses ceramic normal operation . material consisting of BaTiO3 . If OLP doesn't operate when PTC is not cooled , ( 2 ) The higher the temperature is , the higher the resistance Compressor Motor is worn away and causes circuit - value . These features are used as starting device for short and fire . Therefore , always use a properly the Motor . attached OLR 4 - 2 - 2 Role of PTC - Starter 4 - 2 - 6 Note to Use PTC - Starter ( 1 ) PTC is attached to Hermetic Compressor used for ( 1 ) Be careful not to allow over - voltage and over - current , Refrigerator , Show Case , and starting Motor . ( 2 ) Do not strike ( 2 ) Compressor for household refrigerator applies to Don't apply a forcible power or strike , single - phase induction Motor . ( 3 ) Keep apart from any liquid , For normal operation of the single - phase induction motor , in the starting operation flows in both main coil if liquid , such as oil or water away enters the PTC , and sub - coil . After the starting is over , the current in PTC materials may fail due to insulation breakdown of the material itself , subcoil is cut off . The proper features of PTC play all the above roles . So , PTC is used as a motor starting ( 4 ) Don't change PTC at your convenience , device . Don't disassemble PTC and case , If the exterior to the PTC - starter is damaged , resistance value is altered and it may cause poor starting of the compressor motor may cause . ( 5 ) Use a properly attached PTC . - 8 -
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4 - 30LP ( OVERLOAD PROTECTOR ) CONTACTING 4 - 3 - 1 Definition of OLP POINT COVER ( 1 ) OLP ( OVERLOAD PROTECTOR ) is attached to the Compressor and protects the Motor by cutting the BIMETAL current to the Motor if the temperature rises and activates the bimetal spring in the OLR ONTACT , NG ( 2 ) When over - voltage flows to Compressor motor , the Bimetal works by heating the heater inside the OLP , q PO , NT I and the OLP protects Motor by cutting off current which flows to the Compressor Motor . l TERMINALS - I . / I 4 - 3 - 2 Role of the OLP ( 1 ) The OLP is attached to the Hermetic Compressor used for the Refrigerator and prevents the Motor Coil from BIMETAL being started in the Compressor , ADJUST ( 2 ) Do not turn the Adjust Screw of the OLP in any way for SCREW normal operation of the OLR ( Composition and connection diagram of OLP ) Figure 21 HEATER 5 . CIRCUIT DIAGRAM CIRCUITDIAGRAM 1 WAI _ RSUPPLYIN1G1MECONTROLI OPllON _ ERMQ6TAT DEFRO6T , TIMER ] " IL YL I _ CAUTION : PleaseunpluIglle powercord fromIhewallcuret . I i i ICEMAKER TIME 10.5 sec 9 sec 10sec 11sec 12sec CC 13sec 14sec 15sec ICE Mi _ R O _ pART BL E & R3H pART CAPACITORPART P . T . CSTARTER ' C " ONIi ; ; SWITCOHFF 2 3 * I . AMP - F PART , CAPACITORS , IH E PLUGl _ fPE , F . _ R _ ' I PART AND ICEMAI _ R OPTION PART ON CIRCUIT DIAGRAM ARE SUBJECT TO CHAN _ E IN DIFFERENT LOCALITIES . SWI SW2SW3 WH : WHI ' _ BL : BLUE RD : RED GY : GRAYPURPLEYL : YELLOW BO : BRIGHOTRANGE BK : BLACK BN : BROWN PR : PURPLE PK : PINK GN : GREEN 3854JD1046C - 9 -
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6 . TROUBLESHOOTING 6 - 1 COMPRESSOR AND ELECTRIC COMPONENTS _ _ Remove the PTC - Power Source . Starter from the _ , Y ( + R _ a1t0in % g ) ? Voltage i YES _ _ [ _ Compressor and measure the voltage between Terminal C of Compressor and Terminals 5 or 6 of PTC . - _ OLP disconnected ? Replace OLR _ - _ C ° hed _ kic ° nnecti ° n _ 1 Recon0eI ct . _ 1 Applied voltage isn't to use a sregulartomer in the range of Rating Advise the cu i _ - [ _ Voltage + 10 % . transformer . Check the resistance of among M - C , S - C and M - S in Motor Motor Replace Compressor . . heck the resistance N _ O YES } _ _ Compressor , Compressor , Check the resistance of of two terminals in PTC - Starter . F heck the resistance i YES PTC - Starter . NO _ ' - Replace PTC - Starter , YES Check OLR b Ca hreecgkulaifr aOppLlRying IL _ OLP30 sewc , orinksfowrciitbhlien OLP iI r YES _ - [ _ I I operation byturning _ Replace OLR i Hinstant power on and _ r NO Check starting state , starting voltage after 5 the voltage of Rating rain . for balancing cycle Voltage + _ 10 % pressure and cooling the Components start in p O . K . i b easure minimum below . NO _ ' [ _ PTC . - 10 -
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6 - 2 PTC AND OLP Observation value is Separate the PTC - Normal operation of [ _ _ _ _ Starter from Compressor is 220V / 50Hz : 22 £ 2 + _ 30 % Celheecctrkic acnoomthpeornents , i Compressor and 115V / 60Hz : 6.8D + _ 30 % impossible or poor . / measure the 240V / 50Hz : 33 £ 2 + _ 30 % resistance between 127 , 220V / 60Hz : 22 _ 2 No . 5 and 6 of PTC - + _ 30 % Starter with a Tester or Wheatstone Bridge , Replace PTC - The resistance value ( Figure 21 ) Starter i is 0 or several hundred £ 2 . The value is oo Check another _ ' Compressor and check I v electric components , the resistance value between two terminals . . . _ ofOLPwith aTester , I NO I Separate the OLP from YE _ Replace OLR ( Figure 22 ) _ 1 - ( _ gure 21 _ igure 22 6 - 3 DEFROST TIMER Position the Cam Shaft to Replace the Normal operation of the point of first click Defrost Timer , the Defrost Timer is The resistance is = . i _ I i sound and check the impossible , current flowing between terminals No . 1 ( brown ) and No . 2 ( bright orange ) . Next , position the Cam Replace the No defrosting , Shaft to the point of 0 £ 2or variable , Defrost Timer , The resistance is _ . _ i second click sound and check the current flowing between terminals No . 1 ( brown ) and Check the another Poor cooling , 220V / 50Hz : 20K _ No . 4 ( black ) i electric components , The resistance is about H i 115V / 60Hz : 7.8K _ ( Figure 23 ) . i Replace themer , Defrost Ti NO _ ' i Turn the Cam Shaft . I Replace themer . Defrost Ti with holding the Cam Loud click sound , i i Shake about 3 times b Shaft and Body softly . CamShaft _ _ ] _ Jk ' _ : _ _ F , , , re - 11 -
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6 - 4 OTHER ELECTRIC COMPONENTS • Cooling is impossible doesn't run . the hfollowingsesockri , CompI rCe , cuCrraeunst , e , owsto components . i I Poor contacting and a . Thermostat " - gas leakage . Shorted or broken . b . Starting devices Poor contacting c . OLP _ ' or shorted . Coil shorted . d . Compressor coil e . Defrost Timer , . _ Poor contacting = ; : > indicated component . Replace i _ or shorted . f . Circuit parts Compressor runs Check a starting Low voltage . Raise the voltage . poorly . voltage . i I - Replace to starting devices , and broken . indicated component . Check if current flows Poor contacting _ i Check current flowing Shorted . L in sub - coil of / P Compressor , Check capacity of OLE Lack of capacity . _ - - The items described above are normal . Compressor . the compressor , Coil of motor Replace i • Cooling ability is poor Fan motor Check current flowing doesn't run . of the door S / W . indicated component . Poor contacting . _ - - _ Replace i Check current flowing in the Fan Motor . Coil is shorted . _ - - Much frost is built upon Check the running the EVAPORATOR . condition of Timer . R ( Cuonilniinsgshiosrtpeodo . ) r , _ _ _ _ Rinedpiclaacteed component . i Check current flowing of the following Shorted . _ - - components , • Defrost Thermostat • Fuse - M of the following Replace components , indicated component . • L - cord Check current flowing • TE - Plate Heater - 12 -
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6 - 4 SERVICE DIAGNOSIS CHART COMPLAINT POINTS TO BE CHECKED REMEDY Cooling is • Is the power cord unplugged from the outlet ? * Plug to the outlet . impossible . • Check if the power S / W is set to OFF . * Set the switch to ON . • Check if the fuse of power S / W is shorted . * Replace fuse . • Measure the voltage of power outlet . * If voltage is low , correct wiring . Cooling ability • Check if the set is placed close to wall . • Place the set w _ the space of about 10 cm ( 4 inches ) . is poor . • Check if the set is placed close to stove , gas • Place the set apart from these heat cooker and direct rays . appliances . • Is the ambient temperature high or • Make the ambient temperature below . the room door closed ? • Put in foods after cooled down . • Check if put in is hot . • Did you open the door of the set too often • Don't open the door too often and close or check if the door is closed up ? it firmly . • Check if the Control is set to WARM . • Set the control to mid - position . Foods in the • Is food placed in cooling air outlet ? * Place foods in high temperature section . Refrigerator ( Front Part ) are frozen . • Check if the Dial is set to COLD . * Set the dial to MID . • Is the ambient temperature below 5 ° C ? * Set the dial to WARM . Dew or ice • Is liquid food stored ? * Seal up liquid foods with wrap . forms inside • Check if put in hot . * Put in foods after cooled down . the set . • Did you open the door of the set too * Don't open the door too often and close often or check if the door is closed , it firmly . Dew forms • Check if ambient temperature and humidity * Wipe dew with a dry cloth . This occurrence in the Exterior Case . of surroumcling air are high . is solved naturally in low temperature and humidity . • Is there gap in the door gasket ? * Fill up the gap . Abnormal • Is the set positioned in a firm and even place ? * Adjust the Adjust Screw , and position noise , in the firm place . • Are any unnecessary objects set * Remove the objects . in the back side of the set ? • Check if the Drip Tray is not firmly fixed . * Fix it firmly on the original position . • Check if the cover of mechanical room * Place the cover at the original position . in below and front side is taken out . Door does not • Check if the door packing is dirty * Clean the door packing . close well . with filth such as juice . • Is the set positioned in a firm and even place ? * Position in the firm place and level the Adjust Screw . • Is too much food putted in the set ? * Keep foods not to reach the door . Ice and foods • Check if the inside of the set is dirty . * Clean the inside of the set . smell unpleasant . • Did you keep fragrant foods without wrapping ? * Wrap fragrant foods . • It smells of plastic . * The new products smells of plastic , but it will go away after 1 - 2 weeks . • In addition to the items described left , refer to the followings to solve the complaint . Replace the Check if dew forms in Components of the freezer , _ " is poor . Defrosting defrosting circuit . The cycle Check Refrigerating Repair the cycle , is faulty . Cycle , Check the Replace the _ , the Thermistor is Thermistor Thermistor , The operation of poor , - 13 -
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6 - 5 REFRIGERATING CYCLE • Troubleshooting Chart CAUSE STATE OF STATE OF THE TEMPERATURE THE SET EVAPORATOR OF THE REMARKS COMPRESSOR PARTIAL Freezer Low flowing sound of A little higher • Refrigerant level is low due LEAKAGE compartment and Refrigerant is heard and than ambient to a leak . Refrigerator don't frost forms in inlet only temperature , • Normal cooling is possible r - cool normally , when injecting of Refrigerant m > the regular amount . _ > WHOLE Freezer Flowing sound of refrigerant Equal to ambient • No discharging of Refrigerant , m LEAKAGE compartment and is not heard and frost isn't temperature , • Normal cooling is possible Refrigerator don't formed , when injecting of Refrigerant cool normally , the regular amount . o PARTIAL Freeze Flowing sound of refrigerant A little higher • Normal discharging of CLOG compartment and is heard and frost forms than ambient refrigerant , o Refrigerator don't in inlet only , temperature , • The capillary tube is faulty . om cool normally . o WHOLE Freezer Flowing sound of refrigerant Equal to ambient • Normal discharging of CLOG compartment and is not heard and frost isn't temperature , Refrigerant . co . _ Refrigeratordon'tcooL formed , MOISTURE Cooling operation Flowing sound of refrigerant Lower than • Cooling operation restarts CLOG stops periodically , is not heard and frost melts , ambient when heating the inlet of temperature capillary tube . o COMP - Freezer and Low flowing sound of A little higher • Low pressure at high side O mo RESSlON Refrigerator refrigerant is heard and ambient of compressor due to low " _ 3 - nm ; : u don't cool , frost forms in inlet only . temperature , refrigerant level , mO 60 - 4 _ NO COMP - No compressing Flowing sound of refrigerant Equal to ambient • No pressure of high pressure O m RESSlON operation , is not heard and no frost , temperature , part in the compressor . Z • Leakage Detection • Observe discharging point of refrigerant which may be in the oil discharging part in the compressor and hole of evaporator . Check if frost Check if compressor YES forms or not in runs or not , No frost leaks or not , Check if oil Evaporator . or forms in inlet only | Frost formed normally Observe the discharged amount of Refrigerant , _ r Normal amount YES No or much amount Faulty inject refrigerant to compressor Moisture Clog Compressor , and check cooling operation , v Check Compressor _ Clogged by dust . j , , [ Gas leakage , Frost formed normally ( Check the leakage point ) - 14 -
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• General Control of Refrigerating Cycle NO . ITEMS UNIT STANDARDS PURPOSES REMARKS 1 Pipe and Min . Pipe : within 1 hour , To protect The opening time should be reduced moisture piping system Comp : within 10 minutes . to a half of the standards during rain Drier : within 20 minutes . opening time penetration . and rainy seasons ( the penetration of water into the pipe is dangerous ) , 2 Welding Nitrogen Weld under Nitrogen To protect oxide - Refer to repair note in each part . scale formation . pressure atmosphere . - R - 134a refrigerant is more ( N2 pressure : susceptible to leaks than R - 12 and 0.1 - 0,2 kg / cm 2 ) requires more care during welding . - Do not applyforce to pipes beforeand afterwelding to protect pipefrom cracking . N2sealed Confirm Confirm air leaking sounds To protect - In case of evaporator parts , if it moisture parts N2 leak when removing rubber cap . doesn't make sound when removing Sound : usable penetration . rubber cap , blow dry air or N2gas for No sound : not usable more than 1 rain and use the parts . Toremovemoisture , 4 Min . More than 40 minutes Refnge - Evacu _ ra [ _ n time Cycle Vacuum Torr Below 0.03 ( ref ) Note : Only applicable to the model degree equipped with reverse flow protect plate . Vacuum EA High and low pressure sides Vacuum efficiency can be improved are evacuated at the same by operating compressor during time for models above 200 l . evacuation , Vacuum EA Use R - 134a exclusive To protect mixing The rubber pipes for R - 12 refrigerant piping manifold , of mineral and shall be melted when they are used for ester oils , R - 134a refrigerant ( causes of leak , ) Pipe EA Use R - 134a exclusive , To protect R - 12 coupler refrigerant mixing , Outlet R - 134a exclusive , ( Socket ) R - 134a exclusive . Plug EA Do not mix with Refrigerant Use R - 134a exclusively , - Do not weigh the refrigerant at too hot or too cold an area . weighing Weighing allowance : ± 5g R - 12 refrigerant , Note : Winter : - 5g ( 77 ° F [ 25 ° C ] is adequate . ) Summer : + 5g - MakeCopperbombe ( Devicef _ Ilingrefrigerant ) Socket : 2SV Plug : 2PV R - 134a Note : Do not burn O - ring ( bushing ) during welding . 6 Drier To remove the - Use R - 134a exclusively for moisture from replacement R - 134a refrigerator . - Use R - 12 exclusively for pipe inside . R - 12 refrigerator , - Replace drierwhenever repairing refrigeratorcyclepiping . 7 Leak check Defect - Do not use soapy water for - Check oil leak at refrigerant leak area , Use electronic leak detector if check . It may be sucked into refrigerant leak oil leak is not found , the pipe by vacuum . area . - The electronic leak detector is very sensitive to halogen gas in the air . It also can detect R - 141b in urethane . Practice many times before using this type of detector , - 15
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7 . OPERATIOPNRINCIPLAENDREPAIRMETHODOFICEMAKER This manual describes function of models adhering Ice Maker , 7 - 1 OPERATION PRINCIPLE 7 - % 1 Operation principle of Ice Maker • Keep a level of ice - removing tray with " initial control " inputting power . • Wait until when water within ice - removing tray becomes cold Icing C _ after starting ice - making operation . Perform " ice check operation " to ensure that ice is filled at an ice bank by carrying out reverse turning and forward turning the ice - removing motor . Perform " icing - removing operation for dropping ices of ice - removing tray from the ice bank If ices are not fully filled . • Perform " ice - removing control " after supplying water to the ice - removing tray by operating solenoid of the ice valve . • As operation for the assembly line and service of refrigerator , pressing a " l / Maker Test Switch " allows to operate in the order of " initial _ ice - removing _ water supply " control step . 1 . Turning the ice - making stop switch off stops ice - making function of the ice - maker and thus no ice is made . 2 . Ice - making function stops at the time of selecting ice - making function and release of the ice - making function allows to perform the initial control function again . * Make sure the switch on the ice maker assy is turned " on " . - 16 -
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7 - 2 Function of Ice maker 7 - 2 - 1 Initial control function 1 . The level of the ice - removing tray ( ice - removing container ) after completing the MICOM initialization in the initial POWER ON , returning to electricity failure and turning - off of ice - making stop switches . Namely , detection lever operates up and down . 2 . The level of ice - removing container is detected with high / low output signal of hall sensor . In another words , operation is performed in order to keep a level by operating ice - removing motor so that high or low volt - age could be applied in the MICOM PIN . 3 . No signal change of hall sensors until a minute after operating the ice - removing motor should be considered as failure . In this case , stop the automatic ice - remover and then reset the ice - maker initialization if considered as normal after perform - ing continuous check in a cycle of an hour . 4 . Keeping of the ice - removing tray ( ice - removing container ) should be considered initial control is completed . 7 - 2 - 2 Water supply control function 1 . Supply water into the ice - removing tray by operating the ice solenoid placed at the machine room of refrigerator using the time check function if considered as the level is kept after performing a horizontal operation of the ice - making tray after the ice - removing control ( normal ice - removing control , ice - removing control of test function ) is completed . 2 . The quantity of water supply is determined by supplying water for a constant using the dip switch . < Water Supply Quantity Table > Remarks SWITCH NO SWtTH _ TIME O _ OFF OFF OFF O , Ss _ The quantity of water supply may differ depending on ON OFF OFF 9 sec OFF ON OFF 10 _ c the setting status of the dip switch or on water pressure ON ON OFF II SeC as water supply method is of a pattern of direct connec - OFF OFF ON 12 sec tion to water cock . SWf SW2 SW3 ON OFF ON 13 _ c SWtTH OFF OFF ON ON 14 sec ON ON ON 15 sec 3 . The change of the quantity of water supply setting may be done according to the changed time even after changing it without powering off . In the change of dip switch during water supply , it is done according to the water supply time previ - ously established and then done according to the additionally changed time from the next water supply . Water supply control switch _ _ * Adjust the water supply control switch to adjust the amount of water being supplied . * Make sure it is adjusted to meet the line indicating the adequate amount of water supply . 7 - 2 - 3 Ice - making control function 1 . Ice - making control is related with when considered as water within ice - making tray ( ice container ) turns into ice com - pletely after completing water supply operation and performs ice - making completion operation by detecting temperature of ice - making tray . ( ice - making sensor is mounted on the bottom of the ice - making tray ) . 2 . Ice - making control begins after completing water supply control or initial control . 3 . It is considered that ice - making is completed if temperature of ice - making sensor arrives at - 6 ° C after 60 minutes pass from the time water is supplied to the ice - making tray . 4 . It is considered that ice - making is completed if temperature of ice - making sensor arrives at below - 7 ° C after 10 minutes pass at the above status . - 17 -
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7 - 2 - 4 Ice - removing control function 1 . Ice - removing control means operation to separate ice within ice - making tray ( ice - making container ) after ice - making is completed . 2 . Step to check ices stored at the ice bank ( container for storing ice ) are fully filled . It is considered as they are fully filled if signals of the hall sensor are at the On status ( " high " ) before 3.6seconds after rotating positively the ice - making motor . In this case , the ice - making motor remains at the waiting status without performing ice - removing function . Perform ice - detecting operation after rotating positively the ice - making motor in the cycle of an hour if the full ice status is detected . Perform water supply control function after completing ice - removing function in the short of ices stored . Reversely rotating the ice - removing motor in the storage of full ices and then let the motor stop at the position of the ice - making or waiting status . 3 . Ice - removing control performs ice - removing operation immediately if ices stored at the ice bank ( container for storing ice ) are not fully filled ( the hall sensor are at the Off status ( " low " ) within 3.6seconds after rotating positively the ice - making motor ) . In this case , it positively rotates ( CW ) the ice - removing motor and keeps the ice - making tray at the maximum dis - tortion status and makes ices be separated from the ice - making tray . In this case , ice - detecting lever automatically oper - ates lifting operation with ice - removing operation . 4 . Ice - removing control positively rotates ( CW ) the ice - removing motor and stops it for a second as it considers as maximum distortion point ( ice - detecting axle = 160 ° ) if the sensor signal changes from the Off status ( ' low " ) to the On status ( " high " ) after 3.6 seconds pass . 5 . Ice - removing control positively rotates ( CW ) the ice - removing motor at the cycle of an hour if problems in ice - making motor or hall sensor are found and performs initial operation or operates initialization of product if normal . 6 . Ice - removing control stops for a second at the maximum distortion status of the ice - removing tray ( container for storing ice ) . 7 . Step that the ice - removing tray stops for a second and then returns to the level . It returns to the level status returns to the ice - removing tray by reversely rotating the ice - making motor . 8 . The cycle of " water supply _ ice - making _ ice - removing _ returning to the level " if becoming the level status . Maximum distortion point i i i i i In the short of _ : ( _ ' ' Output signal ON ' ' of hall sensor OFF _ [ _ 6 [ ON i Output signalr of hall senso i i Ice - detectionlevel 30 ° , ' , ' i i i I , Operation of . . . . iI _ I - - Ii . . . . . . . . . . . . II = I . I . . . . jlll - - - ll = II \ i i i i i - 8 " O " 10 " 32 " 41 " 53 " 58 " 80 " 160 " 170 " ice - removal lock Lock Lock Ice - making ice - detection ( or _ ina0 2 ± 1 sec _ 1 v I 9 _ 3 sec 8 ± 3 sec < Timing chart for ice - removal > - 18 -
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7 - 2 - 5 Test Function 1 . Function used compulsory operation for the purpose of performing operation test , service and cleaning . This test function is performed if pressing the test switch mounted on the automatic ice - maker itself for 0.5 second or more . 2 . The test button operates when the test function is not input but at the level status . It does not perform ice - removal control and water supply control if ices are full during operation of test function 3 . Pressing the test button for more than 0.5 seconds at the level the status immediately performs ice - removing operation irrespective of the ice generation conditions of the ice - making tray . Caution shall be exercised as water may overflow if operating the test function at the water status that ice - making is not done . A cycle of water supply is performed at the level adjusting operation after ice - removing operation . Therefore , the test button allows to check problems in ice - removing operation , level operation and water supply . 4 . The test function operates in the normal cycle of ice - making _ ice - removal _ returning to the level _ water supply if water supply is completed . TEST S / W * To check on the amount of water being supplied , press the Test button . ( Hold for 0.5 seconds ) - 19 -
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7 - 3 Failure diagnosis method of ice maker _ [ eplacement of Defect of power terminal • Check DC power ( 5V , 12V ) MAIN PCB Defect of ice - making sensor _ l Replacement nofsor ice - making se • Check resistance values of both ends of ice - making sensor ( Pin for PCB CON2 1,2 PIN ) Yes • Ice - making sensor ~ Defect between ( PIN NO # 4 of IC1 ) boards Defect of ice * making kit Replacement of ice - making kit Resistance values at both ends of ice - removing motor Replacement of ( # 7,8 pin of PCB CON2 7,8 ) MAIN PCB is 18 ° - 22 _ ? Drive circuit of ice - removing motor ( IC5 and auxiliary circuit ) is normal ? HALL IC ~ Defect between ( PIN NO # 20 of IC1 ) boards Be sure ice - removing and returning to the level when pressing the TEST S / W Defect of ice - making KIT TEST S / W Replacement of ice - making kit • Both ends of TEST S / W ( # 3,6 pin of PCB CON2 3,6 ) are at open status ? • TEST S / W - Defect between boards ( PIN NO # 19 of IC1 ) ice - l : naldng tray " " " - - . _ Defect of water supply Replacement aoflve water supply v the level with the _ • Water supply valve conduct current ? • Water supply pump normally operates ? • Water supply line is normally connected ? Normal j - 20 -
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7 - 4 Explanation of ice maker circuits 7 - 4 - 1 Power circuit D1 @ 4 CON1 roANS ICI ( MICOM ) TEST The secondary party of transformer consists of power ( 12Vdc ) for driving display and relay and power ( 5Vdc ) supplying power to MICOM and IC . In this case , voltage at each part is as follows : Part Both ends of VA1 Both ends of CE2 Both ends of CE3 Voltage 115Vac 12Vdc 5Vdc VA1 is parts for preventing over - voltage and noise and plays a role of protecting elements of the secondary part of trans - former as the inside of element becomes short and is broken and power fuse is cut off when power of more than 175V is applied . 7 - 4 - 2 Vibration circuit 2 * XIN I ici XOUT ( MICOM ) Circuit used for synchronous clock generation for transmitting / receiving information of the inside logic elements of IC and basic time generation for calculating time . Rated parts must be used as counting time is changed at the IO1 or the OSCl does not operate if SPEC would be changed . 7 - 4 - 3 Reset circuit CC6 27 RESET ] Cl _ 1o4 ( MICOM ) The reset circuit is a circuit that initializes various parts such as RAM , etc inside of the MICOM ( ICl ) and starts the whole of function from the initial status and ' low ' voltage is applied for a constant time ( 10ms ) at the reset terminal of the MICOM at the start of power input . The reset terminal is at 5V during general operation ( the MICOM does not operate in the defect of the reset IC ) . - 21 -
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7 - 4 - 4 Load drive circuit 1 . Load drive status check P4o IC1 : SCK ) ( MICOM ) Water Valve Load Type Measurement Location ON 1V below Condition 12V OFF - 22 -
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7 - 4 - 5 ICE MAKER drive / circuit / 2sv CON2 _ [ _ _ 0 % ( REVERSE ) 6 + _ , _ m _ € . 7KX2 ( FDRWARD ? 5 18 P # 3 8 I 4 B _ 3 7 CC8 _ _ ZT ICI 104 T CC91o4f _ 22 T I _ Loov ( MICOM ) / 77 ICE MAKER R7 . 7K lg PlO 6 TEST S / W CClOi _ " 1 5 2o R9 i : 2K Pll T oo . i _ " 3 Rll R6F2K1F 2 cc _ i ICE MAKER SENSBR I This circuit is a circuit used to embody functions such as ice - removing , full - ice detection , level noise , and ice - making tem - perature detection of ice - making tray ( ice - making container ) , - 23 -
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7 - 5 Main PWB Assembly and Parts List 7 - 5 - 1 MAIN PWB J - 24 -
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7 - 5 - 2 Replacement Part List NO . DWG NO 3ESCRIPTION SPEC ' MAKER REMARK 1 1870JB2059 > WBIMAIN _ I ( DS 1107A ) ] 00 SAn t 1.6 2 , 170JB2002 RANS PCB : 117V , O : 15V AESUN _ TRANS 3 630JBSOO1B JE2DI2T 03152P , 4 ) IAE EU _ CON1 4 WAFER 630JBBOO4G 5MW2bg 08 CON2 5 ( EONH ( 6 630JB80 _ 00 _ MW250 04 CON3 7 IIZZJB2OO4AAICOMCHIPTMPB7C4OgN OSHIB # ICI [ = BZZ _ 2 _ ' IRH178050B ' , 1 ) BA17805T ROHM IIKETBO5OO _ AEGULATOR _ , 2 ) KIA78SOSP KEG IC3 IIRH178120A I _ 1 ) BA17812T ROHM tEGULATOR IC2 11NE781200B JPC7812AHF NEC IIKE704200A " ZIA7042P ( . EC 10 RESET IC IC € IIKDOIOIOOA 3MR 0101D : ODENSHI g2OJB2OD3A GSN 1 ) MRON 11 RELAY RY1 570 O0012A CST ¢ OOMGW OSCl 12 _ ESONATOR AURAT _ , ( _ 212A _ OO2B ) 570 00012B 2ST4ODMGTWF01 dIN 572 00001C ] l ) INR14D471 13 = B1D2AQ9075 ] ' _ 2 ) SVC471D14A ; AMHWb 14 102JBSOO1B ' , 1 ) INR14D621 diN VARISTOR VA1 15 102JB6OOIA _ 2 ) SVC621D14A ; AMHWA 572 O0001D ' J ) SVC271D14A ; AMH _ 16 IO2JB8OO3A ' , 2 ) INR14D271 • JIK [ 1 ) P C D5 17 DD414809BB ; _ TCHINDGlO _ 1N # 148 2 ) ROAM 18 ] DD400409CC ) IODE , REO _ F1NIE € 0F0 € DI _ D4 3TAX SWl 600JBBOO33AIP S / W 3P , DIP 19 ROHM IC5 2O ' IRH622200A3RIVE IC BA6222 CE1 ' CE2286J618 2200uF / 35V 21 ICE10B1H618 I O00uF / 25V CE2 22 I ) S _ ail _ CE4 23 ' CE1071H636LF ¸ CAPACIT1O0R0uF / 25V , CE4771H618 ¢ 70uF / 25V 24 CE3 ' CE2271F636 220uF / 16V 25 26 CE4751H636 47uF / 25V CQ2231N ¢ 09I " _ C _ PAGI ] _ R223 / 100V _ EIL CMI _ CM3 27 28 OK1020H906 102 / 25V 2g CK2230HgOB _ ERC ' APA ¢ I ] _ R223 / 25V _ E YANC 3O CKIO ¢ OHg08 104 / 50V CC1 _ 12 31 32 RDO662H609 58J 1 / 2W R6 33 RD2OO1G608 2KJ 1 / 4W _ 7,7 , R9 _ 11 3ARBONRL _ R3 _ 5,8 34 @ 47010609 4.7K 1 / _ W R1 # _ 16 35 RDIOO # G608 1MJ 1 / 4W R2 36 IRNI612G40aWETALRLM16 2KF 1 / 4W RF1 37 58 3g K . E . ( Q1 mlOBOOgACRANSISTOR < RAlOB _ ( KRA22C _ ) 40 K . EC a2 , TRIO2OOgARBANSISTOR < RCID2M ( KRCI2O2 ) o 6 * 5mm JOI , JOCNJ06 o 6 * 8mm JOg ~ J11CCI . 41 dO2 , dO3 , d07 , F36O7O15 JUMP ) _ ] RE 0.6 * lOmm dOB , d12 ~ J14 0.6 ' 12 5ram 0 6 ' 15mm 42 ( IC2 ) _ 20JB3003AEAT _ NK ( 12 _ ( J572OOOO # A ) 45 920JB30 { ] IAtEATSINK ( 5IV , ( J572 OOOO2A ) 44 SBF0502418SCREW & SSEMBLE W ] H H / S / K HEE SING SOLD ' _ 9111001 SOLDER ALMITKR 19RMA 45 46 t911100 # _ LO _ LF _ B _ H63A 47 i9333105 : LUX AUTC JS71 KOKI 48 - 25 -
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7 - 6 PWB DIAGRAM 01 - D4 CON1 m , , Ns p Vss Vass TEST ( ICE ) co E _ GOD 0 XIN XOUT 27 RESET CC6 - 26 -
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CE4 lOOuF / 25v CON2 17 6 P42 ( SDA / SO ) 18 T R6 8 P43 ICE MAKER e81 / 2w IC5 ) MOTOR 4 BA6222 7 6 ICE MAKER PlO TEST S / W cosoi t _ 1o 20 R9 _ = K Pll 7 col _ _ " 3 _ RF1 Rll _ 162KF ICE MAKER SENSOR cc _ i _ 1 CON101 • • P12 22 P13 ( WATER SUPPLYING TIME CONTROL S / W ) ( DVO ) 23 P14 4 ~ 10,12,13,16,24,25,26 - 27 -
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8 . EXPLODED VIEW & REPLACEMENT PARTS LIST • The parts of refrigerator and the shape of each part are subject to change in different localities . • Capacitors and fuse are optional parts . GR - T622 , GR - T722 _ . L - 28 -
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ICE MAKER PART C - 31 -
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2001.06.01 160 / 120 CIRCUITDIAGRAM WATERSUPPLYIN " GlIMECONtrOL OPllON I " IHERMOSTAT DEFRC _ T , TIMER 1 I _ CALql0N : Pleaseunplutghepowercord IromthevmJolulbt . ) swrrcHNO TIME SW1 SW2 SW3 OFF OFF OFF 10.5 sec m I I I . _ ON OFF OFF g $ ec OFF ON OFF 10 sec ON ON OFF 11 sec OFF OFF ON 12 Sec ON OFF ON 13 flec I I I OFF ON ON 14 flec L _ MP _ I = _ : Rb s : / , ' fc \ , ON ON ON 15 sec BL ON _ P _ ITOR PART P . T . C _ K _ E _ R I SWITCHOFF _ " 1 2 3 , = LAMP - F PART , CAPACITOR _ , THE PLUG TYPE , EAWR4 PARTAND IOE MAI _ EROPTI0 _ pART ON CIRCUIT DIAI3RAM ARE SUBJECT10 CHANQE IN DIFFERENT LOCALtT _ S . SW1 SW2 SW3 WH : WHi _ BL : BLUE RD : RED GY : GRAYPURPLEYL : YELLOW BO : BRIGHOTRANGE 3854JD1046C BK : BLACK BN : BROWN PR : PURPLE PK : PINK GN : GREEN