REFRIGERATOR SERVICE MANUAL
Contents
1. Best Model 1 6 1 Tose CON3 4 EN 18 i 18 5 4 hz 2 14 B 5 i 5 m 7 4 12 5 td 14 P73 DH 5 11 990 pH ad cr i pa AD Ic7 Gl CON4 2 P70 8 8 13 87 De 270 por 115 7 14 3 51 15 1 6 Dor A 3 7 pef id eft iHi pos 18 52 4 Po4 12 4 Do 17 RI3 7 2705 pos 5 ols M 8 2 AP 817 9 1 Rise Ice 270 1 02 30 Better Model o 54563 CON3 hz p74 lt 1 1 s T HH 2 lr 2 2 p76 2 al gt he 3 3 ICT 2885 ar 4 4 McoM 7 D _ iit 5 7 14 P73 H gt 5 ba 8 13 6 bd j 127 CON4 2 P70 8 8 Do 13 R7 1 2704 15 7 14 R8 i Do 2701 2 14 6 15 R9 P02 F T 10 2 po 19 RIO 4 270 7 9 1 20 RH gt o 5 5 2704 pos 11 3 Do 18 12 6 6 2701 4 12 4 17 RIS gt 270 8 3 RESISTANCE SPECIFICATION OF SENSOR TEMPERATURE RESISTANCE OF FREEZER RESISTANCE OF REFRIGERATOR SENSOR amp DEFROST SENSOR 20 C 4 F 22 3 KQ 77 KO 15 5 F 16 9 KQ 60 KQ 10 14 F 13 0 KQ 47 3 5 C 23 F 10 1 KO 382. You can confirm Hall le detection of position co co 1 co Ss E eu ni ES 1 3 gt of position I Two seconds after detection of initial 4 VALVE position you can confirm that valve is on HALL IC detection You can check whetherl_ is sensing Full 5 ice condition If there is a full filled error the of full filled Ice II fifth LED is not on 6 reset Five seconds after fifth stage is completed Mark previous status on TEST mode the Icemaker reset at initial status 7 3 DEFECT DIAGNOSIS FUNCTION 7 3 1 ERROR CODES shown on Maker water supply control panel NO DIVISION INDICATOR REMARKS Display switch 1 Normal Ice Making Sow Make sure that the wire 2 Sensor Open or short circuited wire on each sensor is malfunction connected Ice Maker Kit When ejector blades don t Defecis of 3 malfunction park position over 18 minutes HALL IC MOTOR since Harvest Mode starts HEATER RELAY ERROR indicators in table can be checked only in TEST mode 20 8 DESCRIPTION OF FUNCTION amp CIRCUIT OF MICOM 8 1 FUNCTION 8 1 1 Function 1 When the appliance is plugged in it is set to 37 F for the Refrigerator and 0 F for the Freezer set to 4 for Refr
3. Tester Figure 13 Replace PTC Starter The resistance value is 0Q short or open Shows continuity Separate OLP from Compressor and check resistance value between two terminals of OLP with a Tester Figure 14 Check another electric component Replace OLP Figure 14 D 6 3 OTHER ELECTRIC COMPONENTS Not cooling at all Compressor Check for open short or doesn t run E incorrect resistance readings in the following components a Starting devices Short open or broken Poor contact or shorted b OLP c Compressor coil Coil open or shorted d Wiring harness Poor contact p Replace or shorted indicated component Poor cooling performance Compressor runs poorly Check voltage at Poor or broken or starting devices M adi Low voltage Raise voltage voltage Replace indicated component open contact Check current at Shorted Compressor Check rating of OLP Lack of capacity Replace indicated component Coil is shorted or open Check Fan Motor Fan motor Check wiri ircuit Wire is open or doesn t run SEK SIKON shorted Heavy frost buildup on Check current flow in EVAPORATOR the
4. 2 gt SA lt E al 15 Lp B nw a BK as LEY 2 x 292 5 Y 5 c E QY n RD 23 2 Ea n TE x GY lt oc 5 M E PR RD o so uz lt 8 c Bs JES 4 oI a 7 e ILS ho OJ EISE d E 72890 Ore x ula Ofa I lo ole 5 BL BL BL e PWB PCB ASSEMBLY ICE MAKER I BL Itm con EARTH Ll Al ICE MAKER PART CAPACITOR PART ICE MAKER PART PLUG TYPE AND COMP EARTH PART ON CIRCUIT DIAGRAM ARE SUBJECT TO CHANGE IN DIFFERENT LOCALITIES AND MODEL TYPE 3854 1003 BK BLACK BN BROWN RD RED BOBRIGHT ORANGE YL YELLUW GN GREEN BL BLUE WH WHITE PK PINK GY GREY PR PURPLE SB SKY BLUE BETTER MODEL PWB PCB ASSEMBLY DISPLAY R 01 91817 6 5 1 21314 2 AT 2131415
5. ELECTRIC COMPONENTS Power Sus Remove PTC Starter Reated Voltage YES from Compressor and 10 measure voltage between Terminal C of Compressor and Terminals 5 or 6 of PTC YES No Voltage OLP disconnected ES Replace OLP 5 gt Check connection condition Reconnect in range of Applied voltage isn t Advise customer that D 5 Voltage 10 Readi OK Check Check resistance 7 3 resistance of between M C S C and Motor M S in Motor Open or short Replace Compressor Compressor Compressor 5 Check Check resistance of 4 4 resistance of two terminals in E Open or short Replace PTC Starter PTC Starter PTC Starter 5 Readings OK Check resistance of gt ENGKO two terminals in OLP Open or short Replace OLP Check Check the power supply Supply Did Compressor starting state under load voltage compressor is OK Compressor attempting rating with start to re start after being off NO Replace th for 5 minutes the compressor it 2341s 6 2 AND OLP Check another electric component Observation value is 115V 60Hz 6 803096 Normal operation of Compressor is impossible or poor Separate PTC Starter from Compressor and measure resistance between No 5 and 6 of PTC Starter with a
6. Ice Dumps Water Valve Ont6 10sec Motor On Heater Ejector Park Start Position Detection zone for Park position Motor On Heater On 14sec 76 Feeler Rises Ejector stalls on Ice Motor On Heater 5 to 2min Motor On Heater Dn 19 7 2 5 Function TEST 1 This is a compulsory operation for TEST SVC cleaning etc It is operated by pressing the water supply control KEY for 3 seconds 2 It operates in the Icemaking mode but notin the Ice Removing mode or water supply process If there is an ERROR it can only be checked in the TEST mode 3 If the water supply control KEY is pressed for 3 seconds in the Ice Making mode no matter what condition the Ice Making tray is in the Ice Removing operation starts immediately Water is not yet frozen so water is poured instead of ice 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 ice making Harvest Fill Park position 5 When Stage 5 is completed in the TEST mode minimize MICOM in 5 seconds the time needed to supply water resets to Diagnosis TABLE STAGE ITEMS INDICATOR REMARKS Five seconds after heater starts heater will 1 HEATER go off if temperature recorded by sensor is 50 F 10 C or lever is in up position Five seconds after heater starts you can 2 MOTOR confirm that motor is moving HALL IC detection
7. PANEL FRZ TEMP PANEL CONTENTS REMARKS F 1 cm Er FS Open or short circuited wire Refrigerator 2 sensor E 5 Open or short circuited wire malfunctions Inspect 3 Defrost sensor M connecting wires malfunctions Br a5 Open or short circuited wire on each sensor Room On LED CHECK mode emperature ERROR CODE si NE 4 dakan ange ide Open or short circuited wire malfunctions Ef Kur 2 hours after defrosting Temperature FUSE cuts off 5 Defrosting E EE starts the sensor is not HEATER cuts off DRAIN is above 50 F 10 C clogged HEATER starts RELAY malfunctions REFRIGERATOR TEMPERATURE LOCK ADJUST HOLD 3 SECONDS eS mem gt 006666 415 RECOMMENDED 4377876 7 12 3 oOoooeee lt WARMER COLDER A 415 RECOMMENDED FREEZER TEMPERATURE ADJUST Defect code Panel ERROR CODE on Freezer Temperature panel ON OFF DEFECT SIGNS NO ITEM F1 F2 F3 F4 F5 F6 F7 CONTENTS REMARKS Freezer sensor DOE 1 ralfancti ns Open or short circuited wire Refrigerator sensor uL 5 2 O O Open or short circuited wire Defrost 202 connecting wires 3 O short circuited wire onsen sensor On LED CHECK mode 4 sensor Open or short circuited wire malfunctions 60600009 2 hours after Temperature FUSE cuts off 5 Defrosting e o o O defrosting starts HEATER cuts off DRAIN is malfunctio
8. PIG AAND OLP iiie eae En E n e ES 12 OTHER EEECTRICAL COMPONENTS trii rte e eee Ere ad REY 18 SERVICE BIAGNOSIS CHART gunah et to EH t be a ithe eal wid ain Se i 14 REFRIGERATION CYCLE wc on md ederet e e ete rate itum e eitis 15 16 OPERATION PRINCIPLE amp REPAIR METHOD OF ICEMAKER 17 20 DESCRIPTION OF FUNCTION amp CIRCUIT OF 21 33 EXPLODED VIEW amp REPLACEMENT PARTS LIST 34 39 SAFETY PRECAUTIONS Please read the following instructions before servicing your refrigerator 1 Check the refrigerator for electrical faults 7 Close the top door before opening the bottom door 2 To prevent electric shock unplug before servicing Otherwise you might hit your head when you stand up 3 Always check line voltage and amperage 8 When tilting the refrigerator remove any materials on the refrigerator especially the glass shelves and stored 4 Use standard electrical components or cause your skin food to freeze and stick to the surfaces inside the freezer 5 Don t touch metal products in the freezer with wet hands This may cause frostbite 9 When servicing the evaporator wear cotton gloves This is to prevent injuries fr
9. R 8 2 3 Temperature Sensor Circuit Voltage supplied to each sensor wil range between 0 5 volts 22 F 30 C and 4 5 volts 122 F 50 C depending upon the temperature in the compartments A measurement of 0 volts indicates a short in the sensor circuit A measurement of 5 volts indicates an open in the sensor circuit CON4 NE 22 01 R SENSOR jg GONS 10 D F SENSOR 9 8 evo RT SENSOR 9 17 6 AD D SENSOR 5 777 28 8 2 4 Motor Damper A reversible DC motor is used to open and close the damper To open the damper push test button once To close the damper push test button twice CONS gt PI 001 ze UJ CONO 8 2 5 Damper Heater The damper heater is attached to the baffle and always will be on if the unit is powered on The damper heater uses 12VDC fa DAMPER HEATER iti CONG 29 8 2 6 Key Button Input 4 Display Light On Circuit LED CHECK MODE When the COLDER ADJUST button in the refrigerator temperature control and the COLDER ADJUST button in the freezer temperature control are pushed and held for 1 second or longer every LED on the display turns on at the same time When the buttons are released the previous mode is restored
10. ft 468 kWh yr Energy star 1 4 NO LOAD PERFORMANCE CON POSITION MID MID And Monet 0 Fresh Food F SOME ere 33 41 Frozen Food F 4 4 4 4 Percent Running Time 25 35 n nies 45 60 1 5 REFRIGERATION SYSTEM Minimum Compressor Capacity Vacuum 21 in Minimum Equalized Pressure TOIR pc 49 PSIG 56 PSIG Refrigerant 134a 5 47 02 Compressor nennen anana aana nana nenen 649 BTU hr 1 6 INSTALLATION Clearance must be provided at top sides and rear of the refrigerator for air circulation AT TOP aaa aguna 1in AT SIDES leet iiber es 1 8 in REAR SERA 1in 1 7 REPLACEMENT PARTS 6748C 0004D 6750 00045 6615JB2005B 19 ft 5300JK1003D 22 ft 5300JK1003J 4681JB1016J OCZZJB2003H 2521C A62A8 19 ft 5421JJ0003A 22 ft 5421JJ0002A Evaporator Fan Motor Capacitor Compressor Hi Side Evaporator Lo Side GCOnRdenser 5403 91003 Dryer ceteri gan i aa 5851JJ2002K Condenser Fan Motor 4681JK1001B Temperature Control 6871JB2043A B Main Control esee 6871JB1185A 1 8 AIR FLOW CI
11. hall sensor is reading OV water fill will be initiated NOTE If no movement is detected from the shut off arm detect lever that a Harvest mode will be attempted every 2 hours Heater OFF condition Ice making sensor temperature is 50 F 10 C or more Max 18 minutes 1 9 After detect LEVER rises on 1 1 1 1 bol Heater pon off i 1 T 10 Sec 208 gt lt Motor on Harvest mode WA end poing off 1 110 sec 1 01019 OV fig1 Harvest mode process 18 7 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 water supply control Switch This changes the time allowed for fill as illustrated in the chart Water supply amount TABLE STAGE TIME TO SUPPLY INDICATIONS REMARKS 1 6 sec mn 2 7 sec Co The water amount will vary depending LLL on the water control Switch setting 3 8 sec well as the water pressure of the connected water line KH 4 9 sec Co eS Cy 5 10 sec Co NOTE Below is an example used by another vendor as an explanation of what is taking place Feeler Arm Drops Motor On Heater Heater Off thru detection of Hall IC Motor On Heater Off
12. it out Ee reverse order of disassembly 5 CIRCUIT DIAGRAM BEST MODEL PWB PCB ASSEMBLY DISPLAY R 0 101 11121514151617 8 9 15 114131211110 CoN102 1 2T 3 4 5 6 7 8 9 10111112 GYBL BOJRDJBN Bk PK RRB vea ras rs _ 5 BL BKBNRoBoBL cy 5 12111019 81716151413 1211 PWB PCB ASSEMBLY DISPLAY F 5 10 BL R SENSDR WHWHSBPRNYL GYBLIBORD BNBK 9 F SENSUR 1110191817 161514131211 11213141516 8 CON4 RT SENSOR PWB PCB ASSEMBLY MAIN 7 6 5 mm DEF SENSUR e 5 F R DOOR S W 2 91 TERR 2 lo SPER CORD 5 3 716151 4 3 2 1 a _ 1 m cont YUBL BK Donga CON2 Nu EN L BK GY BN s eas N BL BL
13. part number to order part not the position number DOOR PARTS CAUTION Use the part number to order part not the position number some models ICE MAKER PARTS CAUTION Use the part number to order part not the position number V N 38 ICE MAKER PARTS LOC 600A NON SERVICEABLE PARTS 39 LG Electronics Inc P No 3828JL8008A Elrzo 2003 Printed in M xico
14. same time at initial power on and are turned off together when TEST is completed OPERATING Temperature of Defrost Sensor is 113 F 45 C or POWER in1 2second COMP 1 2 second Freezer FAN more when unit is newly ON gt purchased when moved 9 POWER 1 2 second Defrost in 10 second Defrost Temperature of defrost ON r heater heater OFF 15 lower than 113 F 45 C when power cuts SERVICE in1 2second COMP __ in 1 2 second Freezer FAN ON Reset to normal operation Totalload in7 minute COMP in1i 2secod Freezer FAN from TEST MODE OFF gt gt ON 22 8 3 When the defect CODE removes the sign it returns to normal operation RESET and the other LED turns off 4 The defect CODE shows on the REFRIGERATOR amp TEMPERATURE LOCK VIN COLDER WARMER 37 F IS RECOMMENDED VIN 1 9 Defect Diagnosis Function 1 AI aT 2 When a defect occurs the buttons will not operate but the tones such as ding will sound E FREEZER FC TEMPERATURE COLDER WARMER IS RECOMMENDED HOLD 3 SECONDS Defect code signs Defect code signs Show ERROR CODE on Refrigerator Temperature Panel and Freezer Temperature panel malfunctions ERROR CODE NO REF TEMP
15. 1617 SBPRYLIY BL PK PKIRDIBLIGYYLPRISB PRISB 112 5 4 5 6 7 PWB PCB ASSEMBLY DISPLAY F R SENSUR wiegen T a 7 CONS 10 BL F SENSOR 11101918171615141312111 1 2 3 4 5 6 cons 9 BL 7 PWB PCB ASSEMBLY MAIN 8 RT SENSOR PCB 7 pm 6 BO 5 BO fame DEF SENSOR 4 CY _ 3 PK R DOOR S W 2 A lb lub LI coe POWER CONG SUPPLY 4 YL CORD 3 RD Di 3 7 6 5 4 312 2 BK cont YUBL conz 1 BK DAMPER HEATER L 1 BL GY SB TL w t gt N BL BL 15 rnm Ls GN YL TO M a GN ws gt no LL MW a ze Age v SL CAPACITOR PART n Q k n PK RD uU LL I tem er Yo Li 9 4 z I me ac 255 lt MET R ER o IN oo I Oc 9 T gt RD vE 5 ar RS H TOO i O rlz Oja OL JA 2 APSE 5E Ze x e SE HS SE sbi Se BL LEG BL BL Bb 5 PWB PCB ASSEMBLY ICE MAKER BL EARTH ICE MAKER PART CAPACITOR PART ICE MAKER PART PLUG TYPE AND COMP EARTH PART ON CIRCUIT DIAGRAM ARE SUBJECT TO CHANGE IN DIFFERENT LOCALITIES AND MODEL TYPE 3854JK100284A BK BLACK BN BROWN RD RED BOBRIGHT ORANGE YL YELLUW GN GREEN BL BLUE PR PURPLE WH WHITE PK PINK GY GREY SB SKY BLUE 10 6 TROUBLESHOOTING 6 1 COMPRESSOR AND
16. 4 0 32 F 7 8 KO 30 KO 5 C 41 F 6 2 KO 241 10 50 F 4 9 19 5 KQ 15 59 F 3 9 KQ 15 9 KO 20 C 68 F 3 1 13 KQ 25 C 77 F 2 5 KO 11 KO 30 C 86 F 2 0 KO 8 9 40 C 104 F 14 6 2 KO 50 C 122 F 0 8 KO 4 3 KO The resistance of the SENSOR has a 5 common difference Measure the resistance of the SENSOR after leaving it for over 3 minutes in the measuring temperature This delay is necessary due to sensor response speed 91 8 4 TROUBLESHOOTING COMPLAINT SYMPTOM POSSIBLE CAUSES SOLUTION Electronic Display 1 No Display at all Supply voltage not within specifications Check supply voltage to refrigerator not operating 2 Open in wiring harness from PWB board 2 Check wiring and connectors to PWB board correctly 3 Open in door monitor switch circuit 3 Check door monitor circuit 2 Partial or 1 Supply voltage not within specifications 1 Check supply voltage to refrigerator abnormal display 2 Open in wiring harness from PWB board 2 Check wiring and connectors to and from PWB board Not Cooling 1 Display on but 1 Compressor not operating 1 Check for compressor operation by using the test compressor not 2 Open in compressor circuit key on main circuit board operating 2 Check for open on OLP PTC compressor wiring etc Not cold enough 2 Display on 1 Condenser fan motor not operating 1 Check c
17. LG REFRIGERATOR CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL models LRTN22330 LRTN22320 LRTN19330 LRTN19320 x CONTENTS SAFETY PRECAUTIONS 544555555869 2 SPECIFICATIONS i EE 3 PARTS IDENTIFICATION m 4 DISASSEMBLY oe 5 6 Bele OEE 5 DOOR SWITEHE EEE 5 FAN AND FAN MOTOR unen eh ime ee it ba DE ga aka sena Gan eu m a kaeh La Naga ah ees 6 DEFROST it saha pice eei en dun edet 6 LAMP onn 6 CONTROL BOX REFHIGERATOR ea eee ANRE 6 ADJUSTMENT icit atten cii bana ean uocis da e c NG E aa Gan Aa a ada da naa a dan GENG NG FA ER Rd n Rd Saka ka 7 8 COMPRESSOR ditt ine tede tee telle c lC e en ud od e etl Du 7 ui tesa iR ett ted a ER eite to le Hed cd ee d d 7 OLP OVERLOAD PROTECTOR iiec cedo cfe cc tni c Hd d Ufer tec EC nb oe ecce ede 8 TO REMOVE THE COVER certet tuuc cedet t e t Ge os c ee E ne E V eC eec trc ied ces 8 CIRCUIT DIAGRAM na an kis qa ke d A gc Mx Curam DUO D A a a CAS RN CR RR Rn Du i i 9 10 TROUBLESHOOTING agawa NA GG EN daw GAK UN end a RR dn A DNA RE 11 16 COMPRESSOR AND ELECTRICAL COMPONENTS 11
18. RCULATION D AIR EVAPORATOR FAN EVARORATEUR EVAPORATEUR DE L EVAPORATEUR HOTLOOP DRYER BOUCLE DE DESHYDRATEUR GAZ CHAUD LL CONDENSER VENTILATEUR DE 100 8 LA CONDENSEUR COMPRESSOR CONDENSER COMPRESSEUR CONDENSEUR 4 EVAPORATOR CONTROL mew COLD AIR MIXED AIR FRESH FOOD AIR RETURN TO RS EVAPORATOR 2 PARTS IDENTIFICATION eN 0 Pizza Nook Leveling Screw inside CustomCube Ice maker Refrigerator Door Bin Q CustomFit QE Box FlexiFloor Design A Door Digital Sensor Control ieeveam Door Cooling Q Refrigerator Light Door Cooling Chef Fresh Snack Pan Q Dairy Bin Q Shelves O Freezer Door Bin Can Dispenser Light OptiBin Crisper on some models Grille 3 DISASSEMBLY 3 1 DOOR e Freezer Door 1 Remove the hinge cover by pulling it upwards 2 Loosen hexagonal bolts attaching the upper hinge to the body and lift the freezer door 3 2 DOOR SWITCH 1 To remove the door switch pry it out with a slotted type driver as shown in Figure 4 2 Disconnect the lead wire from the switch xx HINGE COVER HINGE Figure 1 3 Pull out the door gasket to remove from the door foam assembly LEAD WIRE DOOR SWITCH Figure 4 GASKET Figure 2 e Re
19. ating the bimetal spring in the OLP 2 When high current flows to the Compressor motor the Bimetal works by heating the heater inside the OLP and the OLP protects the Motor by cutting off the current flowing to the Compressor Motor 4 3 2 Role of the OLP 1 The OLP is attached to the Sealed Compressor used for the Refrigerator It prevents the Motor Coil from being started in the Compressor 2 For normal operation of the OLP do not turn the Adjust Screw of the OLP in any way OVERLOAD PROTECTOR cross section Part D Customer part No Name number Base phenolic fot UL 94 V 0 rated 330 FBYY late code 2 Movable am support plated steel Electrical Physical i characteristics Hih na d contact support part number part number plated steel Heater support plated steel Heater resistance alloy Disc thermostatic alloy Movable am spring temper copper alloy Contact movable silver on copper 9 Contact stationary silver on copper 40 Slug plated steel Cover polyester UL 94V 0 rated 49 Pin connector plated copper alloy To engage 2 33 2 66 mm dia pin 49 Quick connect terminal brass conforms to UL 310 MEMA DC 2 DIN 46344 Figure 12 4 4 TO REMOVE 8 Remove two Housings on upper part dm 4 Take out the cover PTC from upper to lower position b Turn 45 in the direction of 2 and take
20. ator shelves 3 Release the hooks on both ends of the lamp shield and pull the shield downward to remove it 4 Turn the lamp counterclockwise 5 Assemble in reverse order of disassembly Replacement bulb must be the same specification as the original Max 60 W 2EA Figure 9 3 5 2 Freezer Compartment Lamp 1 Unplug refrigerator or disconnect power 2 Reach behind light shield to remove bulb 3 Replace bulb with a 40 watt appliance bulb 4 Plug in refrigerator or reconnect power 3 6 CONTROL BOX REFRIGERATOR 1 First remove all shelves in n amm remove the Refrigerator Control Box by loosening 2 screws Figure 10 2 Remove the Refrigerator Control Box by pulling it downward 3 Disconnect the lead wire on the right position and separate the lamp sockets 4 ADJUSTMENT 4 1 COMPRESSOR 4 1 1 Role The compressor intakes low temperature and low pressure gas from the evaporator of the refrigerator and compresses this gas to high temperature and high pressure gas It then delivers the gas to the condenser 4 1 2 Composition The compressor includes overload protection The PTC starter and OLP overload protector are attached to the outside of the compressor Since the compressor is manufactured to tolerances of 1 micron and is hermetically sealed in a dust and moisture free environment use extreme caution when repairing it 4 1 3 Note for Usage 1 B
21. e careful not to allow over voltage and over current 2 If compressor is dropped or handled carelessly poor operation and noise may result 3 Use proper electric components appropriate to the Particular Compressor in your product 4 Keep Compressor dry If Compressor gets wet in the rain or a damp environment and rust forms in the pin of the Hermetic Terminal poor operation and contact may result 5 When replacing the Compressor be careful that dust humidity and soldering flux don t contaminate the inside of the compressor Dust humidity and solder flux contaminate the cylinder and may cause 4 2 PTC STARTER 4 2 1 Composition of PTC Starter 1 PTC Positive Temperature Coefficient is a no contact semiconductor starting device which uses ceramic material consisting of BaTiOs 2 The higher the temperature is the higher the resistance value These features are used as a starting device for the Motor 4 2 2 Role of PTC Starter 1 The PTC is attached to the Sealed Compressor and is used for starting the Motor 2 The compressor is a single phase induction motor Durign the starting operation the PTC allows current flow to both the start winding and main winding 4 2 3 PTC Applied Circuit Diagram e Starting Method for the Motor OVERLOAD PROTECTOR COMPRESSOR MOTOR M 3 502 E E PTC STARTER SEALED TERMINAL RSCR Figure 11 4 2 4 Motor Restarting and PTC Coo
22. efrigerant Socket 28V Plug 2PV R 134a Note Do not burn O ring bushing during welding 6 Drier Use R 134a exclusively for To remove the replacement R 134a refrigerator moisture from Replace drier whenever repairing pipe inside refrigerator cycle piping 7 Leak check Do not use soapy water for Defect in Check for an oil leak at the refrigerant check It may be sucked refrigerant leak leak area Use an electronic leak into the pipe by a vacuum area detector if an oil leak is not found 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 to avoid false readings 16 7 OPERATION PRINCIPLE AND REPAIR METHOD OF ICE MAKER 7 1 OPERATION PRINCIPLE 7 1 1 Operation Principle of Icemaker Power On 1 Start Position Adjusts EJECTOR to Start Position with power on Ice Making Waits until water becomes cold after starting ice making operation Harvest a Runs MOTOR to drop ice on tray from ICE BIN Performs Ice Making Mode after supplying water by operating SOLENOID in ICE VALVE Park Position With the detect lever checks if the ICE BIN is full ww ww v wv for 3 seconds The ice maker will run through 3 stages Test Mode D To operate LINE and SERVICE press and hold the Fill Key Harvest Fill Icemaking 1 Turning the icemaking stop switch
23. emperature below 41 F 5 C Set the control to Warm position Condensation or ice forms inside the unit 15 liquid food sealed Check if food put in the refrigerator is hot Did you open the door of the unit too often or check if the door is sealed properly Seal liquid foods with wrap Put in foods after they have cooled down Don t open the door too often and close it firmly Condensation forms in the Exterior Case Check if the ambient temperature and humidity of the surrounding air are high s there a gap in the door gasket Wipe moisture with a dry cloth It will disappear in low temperature and humidity Fill up the gap There is abnormal noise 15 the unit positioned in a firm and even place Are any unnecessary objects placed in the back side of the unit Check if the Drip Tray is not firmly fixed Check if the cover of the compressor enclosure in the lower front side is taken out Adjust the Leveling Screw and position in a firm place Remove the objects Fix the Drip Tray firmly in the original position Place the cover in its original position Door does not close well Check if the door gasket is dirty with an item like juice 15 the refrigerator level s there too much food in the refrigerator Clean the door gasket Position in the firm place and level the Leveling Screw Make sure food stored in shelves does not p
24. following Check current flow in the Defrost Heater Replace indicated component Replace Defrost Heater 6 4 SERVICE DIAGNOSIS CHART COMPLAINT POINTS TO BE CHECKED REMEDY No Cooling s the power cord unplugged from the outlet Plug into the outlet Check if the power Switch is set to OFF Set the switch to ON Check if the fuse of the power Switch is shorted Replace the fuse Measure the voltage of the power outlet f the voltage is low correct the wiring Cools poorly Check if the unit is placed too close to the wall Place the unit about 10 cm from the wall Check if the unit is placed too close to the stove Place the unit away from these heat sources gas cooker or in direct sunlight s the ambient temperature too high or Lower the ambient temperature the room door closed Check if food put in the refrigerator is hot Put in foods after they have cooled down Did you open the door of the unit too often Don t open the door too often and close or check if the door is sealed properly it firmly Check if the Control is set to Warm position Set the control to Recommended position Foods in the s food placed in the cooling air outlet Place foods in the high temperature section Refrigerator front part are frozen Check if the control is set to colder position Set the control to Recommended position 5 the ambient t
25. frigerator Door 1 Loosen hexagonal bolts attaching the lower hinge to the body to remove the refrigerator door only Figure 3 2 Pull out the door gasket to remove from the door foam assembly 3 3 FAN AND FAN MOTOR 1 Remove the freezer shelf If your ref yjrator has icemaker remove the icemaker 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 s FAN MOTOR SHROUD Figure 5 3 4 DEFROST CONTROL ASSEMBLY Defrost Control assembly consists of Defrost Sensor and FUSE M Defrost sensor functions to defrost automatically It is attached to metal side of the Evaporator and senses Temperature At the temperature of 162 F 72 C it stops the emission of heat from the Heater Fuse M is a safety device for preventing over heating of the Heater when defrosting 1 Pull out the grille assem igure 6 2 Separate the connector he Defrost Control assembly and replace the Defrost Control assembly after cutting the Tie Wrap Figure 7 DEFROST CONTROL ASSEMBLY GRILLE ASSEMBLY Figure 6 Figure 7 3 5 LAMP Figure 8 3 5 1 Refrigerator Compartment Lamp 1 Unplug the power cord from the outlet 2 Remove refriger
26. frost isn t temperature Normal cooling is possible by Refrigerator don t formed restoring the normal amount of cool normally refrigerant and repairing the leak PARTIAL Freezer Flowing sound of refrigerant A little higher Normal discharging of the 92 RESTRICTION compartment and is heard and frost forms than ambient refrigerant Refrigerator don t in inlet only temperature The capillary tube is faulty normally WHOLE Freezer Flowing sound of refrigerant Equal to ambient Normal discharging of the RESTRICTION compartment and is not heard and frost isn t temperature Refrigerant e Refrigerator don t cool formed MOISTURE Cooling operation Flowing sound of refrigerant Lower than Cooling operation restarts RESTRICTION stops periodically is not heard and frost melts ambient when heating the inlet of the temperature capillary tube Freezer and Low flowing sound of A little higher Low pressure at high side 2 CO RESSION Refrigerator refrigerant is heard and ambient of compressor due to low 70 7 don t cool frost forms in inlet only temperature refrigerant level D O 5 NO COMP compressing Flowing sound of refrigerant Equal to ambient No pressure in the high an RESSION operation is not heard and there is temperature pressure part of the 2 frost compressor V Leakage Detection e Observe the discharging point of the refrigeran
27. igerator and 4 for Freezer You can adjust the Refrigerator and the Freezer control temperature by pressing the COLDER button or the COLD button 2 When the power is initially applied or restored after a power failure it is automatically reset to 37 F and F set to and 4 Sears Best Model REFRIGERATOR 9 V A opp FREEZER MIN 7 TEMPERATURE TEMPERATURE LOCK COLDER WARMER COLDER WARMER HOLD 3 SECONDS 37 F IS RECOMMENDED 0 F IS RECOMMENDED Control range 32 F 47 F Control range 6 F 8 F 0 C 8 C 21 C 13 C Sears Better Model is REFRIGERATOR 5 gt 10000000 COLDER LOCK ADJUST 41S RECOMMENDED HOLD 3 SECONDS 86660600 lt or FREEZER _ WARMER COLDER TEMPERATURE TEMPERATURE 41S RECOMMENDED ADJUST 8 1 2 How to Change the Temperature Mode to F 1 The setting temperature mode can be changed to F by pressing the button 2 The initial setting is on F When the mode is changed the LED lights come on 8 1 3 Key Lock 1 The key pads can be locked by pressing and holding the KEY LOCK button for 3 seconds 2 The lock light will be displayed and the key pads will be inoperable 3 Pressing and holding the KEY LOCK button for 3 seconds will reactivated the key pads 8 1 4 OFF Function 1 To turn off the Best model press and hold the F C button for 3 seconds To turn
28. ling 1 It requires approximately 5 minutes for the pressure to equalize before the compressor can start 2 The PTC device generates heat during operation Therefore it must be allowed to cool before the compressor can restart 4 2 5 Relation of PTC Starter and OLP 1 If the compressor attempts to restart before the PTC device is cooled the PTC device will allow current to flow only to the main winding 2 The OLP will open because of the over current condition This same process will continue 3 to 5 times when the compressor attempts to restart until the PTC device has cooled The correct OLP must be properly attached to prevent damage to the compressor 4 2 6 Note for Using the PTC Starter 1 Be careful not to allow over voltage and over current 2 Do not drop or handle carelessly 3 Keep away from any liquid If liquid such as oil or water enters the PTC PTC materials may fail due to breakdown of their insulating capabilities 4 If the exterior of the PTC is damaged the resistance value may be altered This can cause damage to the compressor and result in a no start or hard to start condition 5 Always use the PTC designed for the compressor and make sure it is properly attached to the compressor 4 3 OLP OVERLOAD PROTECTOR 4 3 1 Definition of OLP 1 OLP OVERLOAD PROTECTOR is attached to the Compressor and protects the Motor by opening the circuit to the Motor if the temperature rises and activ
29. ns the sensor is not above 50 F 10 C clogged HEATER starts RELAY malfunctions 23 8 1 10 TEST Mode 1 The Test mode allows checking the PCB and the function of the product as well asl ng out the Defective part in case of an error 2 The test button is on the main PCB of the refrigerator Test S W The test mode will be cleared in 2 hours regardless of the type of test mode 3 While in the test mode the function control button will not operate though the recognition tone beep sounds 4 After exiting the test mode be sure to reset by unplugging and then plugging in the appliance 5 If an error such as a sensor failure is detected while in the test mode the test mode is cleared and the error code is displayed 6 While an error code is displayed the test mode will not be activated even if the test button is pushed MODE MANIPULATION CONTENTS REMARKS TEST1 Push the test button 1 Continuous operation of the COMP once 2 Continuous operation of the freezer fan 3 STEPPING DAMPER OPEN 4 Defrosting Heater OFF 5 Every DISPLAY LED ON TEST2 Push the test button 1 COMP OFF Reset if the once while in 2 Freezer FAN OFF temperature of the TEST MODE 1 3 STEPPING DAMPER CLOSE 4 Defrostina heater ON Defrosting sensor is pd 50 F 10 C or more 5 DISPLAY LED shows 222 Reset Push the test button Reset to the default setting The compressor will once while in Start after a 7 min
30. off O stops the icemaking function 2 Setting the icemaker switch to OFF and then turning it back on will reset the icemaker control x47 7 2 CONTROL METHOD ACCORDING TO FUNCTIONS 7 2 1 Start Position 1 After POWER OFF or Power Cut check EJECTOR s position with MICOM initialization to restart 2 Control Method to check if it s in place 1 EJECTOR is in place The ejector must be in the park position before a new cycle can be initiated 2 EJECTOR isn t in place A If there is no ice formed in the ice maker it should take approximately 2 minutes for the ejector blades to cycle through the harvest mode and return to the park position B If there is ice formed in the ice maker it can take up to 18 minutes for the ejector blades to cycle through the harvest mode and return to the park position 7 2 2 Ice Making Mode 1 The Ice Making Mode starts once the ejector is in the park position and the ice maker mold is filled with water 2 The Ice Making Mode is terminated when the ice maker sensor reaches 19 F 7 C This may take between 1 and 4 hours 7 2 3 Harvest Mode 1 The Harves mode is initiated when the temperature is satisfied with the shut off arm in the down position 2 Once the Harvest mode is initiated the heater is operated for 30 seconds 3 After 30 seconds the ejector blades are operated Pin 10 of micom from the hall sensor will read 5V 4 Once the ejector blades have reached the park position and the
31. off the Better model press OFF key for 3 seconds 2 In the Off mode the Best model will display OFF in the control panel The OFF light will be displayed on the Vetter model 3 To cancel the OFF function press the same keys and hold for 3 seconds 21 8 1 5 Alarm for Open Door 1 This feature sounds buzzer when the freezer or refrigerator door is not closed within 1 minute after it is opened 2 One minute after the door is opened the buzzer sounds three times each for 0 5 seconds These tones repeat every 30 seconds 3 The alarm is cancelled when the freezer or the refrigerator is closed while the buzzer sounds Freezer Door Closed or Refrigerator Door Closed 3 Times 3 Times 3 Times 3 Times Buzzer Within 1 min 1 min 4 gt lt gt lt 30 sec 30 sec 30 sec 8 1 6 Buzzer Sound When the button on the front Display is pushed a Ding sound is produced 8 1 7 Defrost Cycle 1 A defrost cycle will be initiated after 4 hours of accumulated compressor run time after the initial power up or a power failure 2 After the initial defrost the defrost cycle is initiated after Eb accumulated compressor run time 3 The defrost cycle will be terminated once the defrost sensor reaches 50 F 10 C 8 1 8 Electrical Parts Electrical parts such as COMP defrost heater freezer FAN etc operate in the following order to prevent noise and parts damage Several parts are started at the
32. om the sharp evaporator fins 10 Service on the refrigerator should be performed by a qualified technician Sealed system repair must be performed by a CFC certified technician 6 Prevent water from spiling onto electric elements or the machine parts 1 SPECIFICATIONS 1 1 DISCONNECT POWER CORD BEFORE SERVICING IMPORTANT RECONNECT ALL GROUNDING DEVICES All parts of this appliance capable of conducting electrical current are grounded If grounding wires screws straps clips nuts or washers used to complete a path to ground are removed for service they must be returned to their original position and properly fastened 1 2 IMPORTANT NOTICE This information is intended for use by individuals possessing adequate backgrounds of electrical electronic and mechanical experience Any attempt to repair a major appliance may result in personal injury and property damage The manufacturer or seller cannot be responsible for the interpretation of this information nor can it assume any liability in connection with its use 1 3 ELECTRICAL SPECIFICATIONS Temperature Control Position MID 8 6 F Defrost Control 7 hrs Defrost Thermostat 50 F Electrical Rating 115V 60 Hz 1 5 Amp Maximum Current Leakage 0 5 mA Maximum Ground Path Resistance Energy Consumption 19 cu ft 443 KWh yr Energy star 22 cu
33. ondenser fan motor and wiring circuit compressor is 2 Condenser coils blocked 2 Check air flow across condenser operating 3 Evaporator fan motor not operating 3 Check evaporator fan motor and wiring circuit 4 Damper not opening or internal air flow blocked 4 Check damper motor circuit 5 Sensor not operating properly 5 Check refrigerator and freezer sensors 6 Door not sealing 6 Check for proper door 7 Evaporator Frosted up 7 Check defrost circuit components 8 Sealed System related problem Not defrosting 1 Freezer has too 1 Open in defrost circuit 1 Check defrost heater and circuit using Test Key much frost 2 Defrost sensor not operating correctly 2 Check sensor 3 Defrost drain clogged 3 Check drain 32 8 5 MAIN PWB ASSEMBLY AND PARTS LIST 8 5 1 Main PWB Assembly connector 1 SAVING F FAN DEF HTR DOOR S W F R connector 2 connector 4 118510 585 3 RI7 J05 eo O 10 Q O RI RB RI RIO RI RIZ RIS RH pese KEER KEEN CES J08 819 R20 R21 R23 RD 4 00000000 CET connector 5 connector 6 DISPLAY SCAN connector 3 33 9 EXPLODED VIEW amp REPLACEMENT PARTS LIST CAUTION Use the part number to order part not the position number CASE PARTS 34 FREEZER PARTS CAUTION Use the part number to order part not the positi REFRIGERATOR PARTS CAUTION Use the
34. revent the door from closing Ice and foods smell unpleasant Check if the inside of the unit is dirty Are foods with a strong odor unwrapped The unit smells of plastic Clean the inside of the unit Wrap foods that have a strong odor New products smell of plastic but this will go away after 1 2 weeks e Other possible problems the freezer Check the refrigeration system Check the Thermistor Check if frost forms in Not x gt defrosting ofthe defrosting circuit The system Perform sealed gt is faulty system repair The operation of Replace the gt the Thermistor is gt Thermistor incorrect 14 Check Components 6 5 REFRIGERATING CYCLE Troubleshooting Chart STATE OF STATE OF THE TEMPERATURE THE UNIT EVAPORATOR OF THE MERE 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 by In cool normally restoring the normal amount of refrigerant and repairing the leak gt COMPLETE Freezer Flowing sound of refrigerant Equal to ambient No discharging of Refrigerant LEAKAGE compartment and is not heard and
35. rotect pipe from cracking 3 Nesealed Confirm Confirm the sound of To protect In case of evaporator parts if it doesn t parts leak pressure relief when moisture make sound when removing rubber removing the rubber cap penetrati cap blow dry air or gas for more Sound usable than 1 min and use the parts No sound not usable 4 Refrige Evacuation Min More than 40 minutes To remove moisture ration time 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 evacuation Vacuum EA Use R 134a manifold To protect mixing The rubber pipes for R 12 refrigerant piping exclusively of mineral and will be melted when they are used for ester oils R 134a refrigerant causes of leak Pipe EA Use R 134a manifold To protect R 12 coupler exclusively refrigerant mixing Outlet R 134a manifold exclusively To protect R 12 Socket refrigerant mixing Plug R 134a manifold exclusively To protect R 12 refrigerant mixing 5 Refrigerant EA Use R 134a exclusively Do not mix with Do not weigh the refrigerant at too weighing Weighing allowance 50 R 12 refrigerant hot or too cold an area Note Winter 5g 77 25 C is adequate Summer 59 Make Copper charging canister Device filling r
36. t which may be in the oil discharging part of the compressor and in a hole in the evaporator runs Check if compressor YES Y Frost formed normally 2 if frost Check if orms in gt leaks Evaporator frost forms in inlet only Normal amount Moisture Clog Faulty Compressor Check Compressor Clogged by dust Observe the discharged amount of Refrigerant None or too much Inject refrigerant in compressor and check cooling operation Y Frost formed normally 15 YES y Gas leakage Find the leak and repair it 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 piping system Comp within 10 minutes to a half of the standards during rain opening time Drier within 20 minutes 77 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 pressure atmosphere scale formation R 134a refrigerant is more pressure susceptible to leaks than R 12 and 0 1 0 2 kg cm requires more care during welding Do not apply force to pipes before and after welding to p
37. ute TEST MODE 2 delay 24 8 2 PCB FUNCTION 8 2 1 Power Circuit 1 Power is supplied to the control board at pins 1 and 3 of connector 1 CON1 POWER 25 8 2 2 Load Buzzer Drive amp Open Door Detection Circuit 1 Load Drive Condition Check Neutral POWER MP 4 Line Voltage 9 2 RY2 ALET5BI2 16A WI Condenser fan motor Evaporator fan motor Eee DEF HEATER FUSE M LAMP F LAMP R DOOR S W F R To measure outputs of the control board check voltages between the pins for the following components Circuit Pin Number Pin Number Output Voltage Compressor Con2 pin7 Cont pini 115 VAC Condenser fan Con2 pin7 pini 115 VAC Evaporator fan Con2 pin5 pini 115 VAC Defrost heater Con2 pin3 pini 115 VAC F R lamp Con2 pin1 Cont pini 115 VAC NOTE When the door of the freezer refrigerator is left open for 7 minutes or longer the lamp of the freezer refrigerator turns off automatically 26 2 Open Door Circuit Door Monitor Circuit CONS 4 LAMP F F IR DOOR S W LAMP R Freezer or Refrigerator Measurement between pins 4 and 3 at Con 5 Both Closed O volts One door open 5 volts 27 DOOR S W F
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