REFRIGERATOR SERVICE MANUAL
Contents
1. ao a TRES D EZ 6 4006 6 99 9 9 005 84186824 FUCEL CSET 70a 44 8 4 2 Dispenser Drive PWB Assembly MS Ww Bm asio ania 7 S Z 7 7 7 ZEN 7 7 7 7 7 7 7 7 6 8 e uoo GHB OMS 39 w LON TONS 300 OT de i LA 45 9 EXPLODED VIEW amp REPLACEMENT PARTS LIST CASE PARTS CAUTION Use the part number to order part not the position number FREEZER PARTS CAUTION Use the part number to order part not the position number REFRIGERATOR PARTS mber CAUTION Use the part number to order part not the position nu DOOR PARTS CAUTION Use the part number to order part not the position number DISPENSER PARTS CAUTION Use the part number to order part not the position number ICE amp MAKER PARTS CAUTION Use the part number to order part not the position number 4 ICE BANK PARTS CAUTION Use the part number to order part not the position number P No MFL62. 3 It separates ground connection screw 10 3 16 AUGER MOTOR COVER 1 After removing the icemaker remove the 5 stainless screws holding the auger motor cover shown in the picutres below 3 Disconnect wire harness of motor cover assembly There is a auger motor on the back as shown in the picture Icemaker Power amp Full detection Signal 11 3 17 HOW TO REMOVE A DOOR ICE BIN 1 Grip the handles as shown in the picture 12 3 18 HOW TO INSERT A DOOR ICE BIN 1 Insert the Ice Bin slightly tilting it to avoid touching the Icemaker especially ice maker lever Insert the ice bucket carefully avoid contacting the automatic shut off arm a 3 19 HOW TO REMOVE AND REINSTALL THE PULLOUT DRAWER 3 19 1 Follow Steps to Remove Step 1 Open the freezer door Step 2 Remove the lower basket Step 3 Remove the two screws from the guide rails one Step 4 Lift the freezer door up to unhook it from the rail from each side support and remove Pull both rails to full extension Step 5 First Remove the gear from the left side first by releasing the tab behind the gear place a screwdriver between the gear and the tab and pull up on the gear Second Remove the center rail Third Remove the gear from the right side by following the same steps for the left side NOTE THIS T
3. D D Normal status When dispenser is operated DISPENSER LIGHT is ON 2 ON status DISPENSER LIGHT is on continuously 8 1 8 CONTROL OF FREEZER FAN MOTOR 1 Freezer fan motor has high and standard speeds 2 High speed is used at power up for Ice Plus and when refrigerator is overloaded Standard speeds is used for general purposes 3 To improve cooling speed the RPM of the freezer fan motor change from normal speed to high 4 High speed 2700RPM Initial power on or load corresponding operation Ice Plus Normal speed 2400RPM General working conditions 5 Fan motor stops when refrigerator or freezer door opens 8 1 9 Cooling Fan Motor 1 The cooling fan is switched ON and OFF in conjunction with the compressor 2 he cooling fan runs at a single speed 3 The failure sensing method is the same as in the fan motor of the freezing fan motor refer to failure diagnosis function table for failure display 8 1 10 Icing Fan 1 The Icing Fan is controlled by the the sensor on the top of the ice room 2 The failure sensing method is the same as in the fan motor of the freezer refer to failure diagnosis function table for failure display 29 8 1 11 Ice Plus 1 The purpose of this function is to intensify the cooling speed of freezer and to increase the amount of ice 2 Whenever selection switch is pressed selection release the LED will turn ON or OFF 3 If there is a power outage and the refrigerator is
4. E Physical characteristics termination part number part number 2 Pin connector plated copper alloy To engage 2 33 2 66 mm dia pin 3 Quick connect terminal brass conforms to UL 310 MEMA DC 2 DIN 46344 4 4 TO REMOVE THE COVER PTC 1 Remove the Cover Back M C 2 Disconnect two housing upper side of comp connected in 3 Loosen two screws on comp base 4 Use a L shaped flap tool to pry off the cover 5 Assembly in reverse order of disassembly 18 5 CIRCUIT DIAGRAM DISPENSER LEVER S W PILOT VALVE eg WH N WH N AUGER MOTOR SOLENOID DISPENSER WATER VALVE SOLENOID CUBE STEPPING MOTOR ERN TI RD PR BKI 2 1 5 6 7 8 CON PWB ASSEMBLY DISPENSER 12 m o 9 e 3 efi VAVAVAVA WAL VATE SE Eae eie GNYL GN START DISPENSER LAMP WHRO BUH YL BL BOJRD BN 13 12 11 10 9 8 7 6 5 41 3 2 1 iciNc sENson 8 1941 2 PWB ASSEMBLY DISPLAY HER RT SENSOR ii E EIS o OP EARTH ERES CON101 _ STARTER z UJ gt 62 2 lt 0 ze lt gt Z PLUG TYPE COMP THERMOSTAT CAPACITOR PART AND COMP GROUND PART FUSE ON CIRCUIT DIAGRAM ARE SUBJECT TO CHANGE IN DIFFERENT LOCALITIES AND MODEL TYPE P LC START OPTION LG COMP MATSUSHITA COMP BROWN BO
5. Perform sealed system repair the Thermistor 6 4 REFRIGERATION CYCLE v Troubleshooting Chart PARTIAL LEAKAGE COMPLETE LEAKAGE J9V Vv11l PARTIAL CLOG O G G m UJ lt OD MOISTURE CLOG COMP RESSION NO COMP RESSION NOISSSYdNOO JAILLO333Gd STATE OF THE UNIT Freezer compartment and Refrigerator don t cool normally Freezer compartment and Refrigerator don t cool normally Freezer compartment and Refrigerator don t cool normally Freezer compartment and Refrigerator don t cool Cooling operation stops periodically Freezer and Refrigerator don t cool No compressing operation STATE OF THE EVAPORATOR Low flowing sound of Refrigerant is heard and frost forms in inlet only Flowing sound of refrigerant is not heard and frost isn t formed Flowing sound of refrigerant is heard and frost forms in inlet only Flowing sound of refrigerant is not heard and frost isn t formed Flowing sound of refrigerant is not heard and frost melts Low flowing sound of refrigerant is heard and frost forms in inlet only Flowing sound of refrigerant is not heard and there is no frost 23 TEMPERATURE OF THE COMPRESSOR A little higher than ambient temperature Equal to ambient temperature A little higher than ambient temperature Equal to ambient temperature Lower than ambient temperatur
6. 5 2 19 TROUBLESHOOTING PC 20 24 7 OPERATION PRINCIPLE AND REPAIR METHOD OF 25 27 8 DESCRIPTION OF FUNCTION amp CIRCUITS OF nnn n nnn nnn anas nnne nnn nnn nnns 28 43 9 EXPLODED VIEW amp REPLACEMENT PARTS LIST etre 44 50 SAFETY PRECAUTIONS Please read the following instructions before servicing your refrigerator 1 Unplug the power before handling any elctrical componets 2 Check the rated current voltage and capacity 3 Take caution not to get water near any electrical components 4 Use exact replacement parts 5 Remove any objects from the top prior to tilting the product 2 1 SPECIFICATIONS 25 cu ft DOOR DESIGN Side Rounded VEGETABLE TRAY Opaque Drawer Type SPECIFICATIONS SPECIFICATIONS NET WEIGHT pounds 324 18 25cu ft Fin Tube Type TEMPERATURE CONTROL R 134a 145 g Heater Defrost Full Automati ISO10 280 ml DEFROSTING SYSTEM DIMENSIONS PE T f G S i i i 1 Y Lu L 5 lt LFX25961 02 34 1 4 in 31 3 4 in Depth Total with Door Open H
7. 39 Push FREEZER KEY and LOCK KEY at the same 1 COMPRESSOR and the Freezer fan time over 5 seconds in OFF TEST MODE 2 OR Push 2 Stepping DAMPER CLOSE TEST Switch once in 3 Defrosting HEATER ON TEST MODE2 4 DISPLAY LED shows no 3 See page 39 Reset if the Temperature of the Defrosting Sensor is 46 F 8 C or more Push FREEZER KEY and LOCK KEY at the same time over 5 seconds in The compressor will TEST MODE 3 OR Push Reset to the previously setting Start TEST Switch once in ecole TEST MODE Delay TEST MODE3 See page 39 299 8 1 17 Display Mode 1 Press the REFRIGERATOR and ICE PLUS buttons simultaneously and hold them for 5 seconds until the ding sounds 2 To release from the display mode press the REFRIGERATOR and ICE PLUS buttons simultaneously and hold them for 5 seconds until the ding sounds NOTE The display mode is designed not to operate while all doors are closed 3 Display condition ICE PLUS DISPENSER FREEZER REFRIGERATOR LIGHT FILTER ALARM LOCK 3secs NOTE For the external temperature the display changes according to the room temperature 4 Operating condition 1 Display operation Buttons for ICE PLUS DISPENSER LIGHT FILTER ALARM LOCK operate normally But when you press the FREEZER button and REFRIGERATOR button it just generates a Ding sound but the temperature display part does not change 2 Load operation All loads are turned off except for Refri
8. DUCT DOOR REPLACEMENT no e Poeti Ca battu Do Poder 10 IGE CORNER DOOR REPLACEMENT Oui SU M oco 10 IGEMAKER ASSEMBLY deccm 10 AUGER MOTOR COVER a a HU 11 HOW TOSREMOVE A DOOR ACE BIN arieni nubit tle gum 12 HOW TOVINSERTADOORB IOEIN 12 HOW TO REMOVE AND REINSTALL THE PULLOUT DRAWER 13 14 WARWE VALVE DISASSEMBLY METHOD ae 15 FAN AND FAN MOTOR DISASSEMBLY 15 FOL ODTIBRAVEE dese att usa 16 A M 17 18 COMPRES 0 M E 17 e 17 OBPIOVEREOAD PROTECTOR 18 TOXHEMOVE THE COVER T TG 3 5 Gus ciet 18
9. ON 13V 15V 2965 2 3 Machine compartment fan Pin8 amp 9 of con4 MOTOR OFF 2V or less MOTOR ON 13V 15V 2 4 Icing compartment fan Pind amp 6 of con4 MOTOR OFF 2V or less MOTOR ON 13V 15V 27 3 Open Door Detection Circuit Check CON4 CON6 REFRIGERATOR DOOR FREEZER DOOR SWITCH 6 SWITCH Measurement Freezer Location Refrigerator Door Pin 11 amp 12 of con4 Ref Door Pin 5 amp 6 of con6 Fre Door 8 2 3 Temperature Sensor Circuit CONG z gt nex erm X Lan 25 R23 ICI eK m H a F SENSOR s o N 52 a 52 538 MICOM EE 3 4 008 Y 23 By m CAD AD 1 2 we PJs CONIOI CCIO7 ICING SENSOR ICING SENSOR is located on the Display The upper circuit reads refrigerator temperature freezer temperature Icing sensor temperature and defrost sensor temperature for defrosting and the indoor temperature for compensating for the surrounding temperature into MICOM Opening or short state of each temperature sensor are as follows CHECK POINT NORMAL 30 C 50 SHORT CIRCUITED OPEN Refrigerator sensor POINT Voltage Defrosting sensor POINT Voltage 0 5V 4 5V 5V Room Temperature sensor POINT Voltage 38 8 2 3 RESISTANCE SPECIFICATION OF SENSOR RESISTANCE OF FREEZER ICING RESISTANCE OF REFRIGERATOR amp SENSOR DEFROST
10. SENSOR amp ROOM SENSOR TEMPERATURE The resistance of the SENSOR has a 5 tolerance 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 39 8 2 4 Refrigeration Compartment Stepping Motor Damper Circuit 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 12V e IC18 5V 946 7774 CONG R28 R29 R30 10KJ 410KJ 410KJ 8 2 5 Dispenser Drive Circuit SOLENOID CUBE DOOR WATER VALVE LEVER S W Gru PmWumbe Output vonage 40 8 2 6 LED in Refrigerator Freezer room Apply for LED Model CONG LED Module Con6 Pin14 Con6 Pin15 41 8 3 TROUBLESHOOTING CHECKING PROBLEM INDICATED BY CHECK METHOD CAUSE SOLUTION 1 FREEZER Check if FREEZER POWER Replace Main PWB REFRIGERAT REFRIGERATOR iS poor POWER 1 The whole SOURCE is OR DOOR IS OPEN and check display 2 If LAMP is dim Check visually Applied voltage Replace Main PWB 2 DISPLAY LED error 3 The Check connection of CONNECTOR Reconnect connection of CONNECTOR connection is poor CONNECTOR the MAIN PWB CONNECTOR TRANS FUSE is Replace Main PWB open COOLING is NO COOLING 1 If the USE TEST MODE1 COMPRESSOR Replace OLP PTC COMPRESSOR forced COOLI
11. in the freezer Check the refrigeration system Check the Thermistor Not defrosting The system is faulty The operation of the Thermistor is incorrect 22 Plug into the outlet Set the switch to ON Replace the fuse If the voltage is low correct the wiring Place the unit about 4 inches 10 cm from the wall Place the unit away from these heat sources Lower the ambient temperature Put in foods after they have cooled down Don t open the door too often and close it firmly Set the control to Recommended position Place foods in the high temperature section front part Set the control to Recommended position Set the control to Warm position Seal liquid foods with wrap Put in foods after they have cooled down Don t open the door too often and close it firmly Wipe moisture with a dry cloth It will disappear in low temperature and humidity Fill up the gap Adjust the Leveling Screw and position the refrigerator in a firm place Remove the objects Fix the Drip Tray firmly in the original position Place the cover in its original position Clean the door gasket Position in a firm place and level the Leveling Screw Make sure food stored in shelves does not prevent the door from closing 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 Check Components of the defrosting circuit
12. of hinge lever latch 9 CAUTION When lifting hinge free of latch be careful that door does not fall forward 7 Place door inside facing up down onto a non scratching surface gt Right Door FIG 3 1 Disconnect door switch wire harness Remove cover Disconnect wire harness 3 Remove the grounding screw 4 Rotate hinge lever 5 clockwise Lift top hinge 6 free of hinge lever latch 7 AON Open door Loosen top hinge cover screw 1 Lift up cover 2 CAUTION When lifting hinge free of latch be careful that door does not fall forward 6 7 Lift door up from middle hinge pin door Place door inside facing up down onto a non scratching surface Figure 2 Figure 3 Figure 1 TUZ S 1 Insert the tube until you can see only one of the lines printed on the tube 2 After inserting pull the tube to ascertain that it is secure 3 Assemble clip Incorrect 3 2 DOOR e Removing Refrigerator Door 1 Remove door frame cover Starting at top of cover and working down snap cover out and away from door Frame Cover Handle Figure 1 2 Remove gasket bracket clips There are two clips on each door Start bracket removal near one of the middle clips 1 Pull gasket back to expose gasket bracket clip and door frame 2 Insert a flat tip screwdriver into seam between gasket bracket and door frame and pry back until clips snap out 3 Continue
13. powered on again Ice Plus will be canceled 4 To activate this function press the Ice Plus key and the LED will turn ON This function will remain activated for 24 hours The first three hours the compressor and Freezer Fan will be ON The next 21 hours the freezer will be controlled at the lowest temperature After 24 hours or if the Ice Plus key is pressed again the freezer will return to its previous temperature 5 During the first 3 hours 1 Compressor and freezer fan HIGH RPM run continuously 2 If a defrost cycle begins during the first 90 minutes of Ice Plus the Ice Plus cycle will complete its cycle after defrosting has ended If the defrost cycle begins when Ice Plus has run for more than 90 minutes Ice Plus will run for two hours after the defrost is completed 3 If Ice Plus is pressed during defrost Ice Plus LED is on but this function will start seven minutes after defrost is completed and it shall operate for 3 hours 4 If Ice Plus is selected within 7minutes after compressor has stopped the compressor compressor delays 7 minutes shall start after the balance of the delay time b The fan motor in the freezer compartment runs at high speed during Ice Plus 6 For the rest of the 21 hours the freezer will be controlled at the lowest temperature 8 1 12 FREEZER amp REFRIGERATOR LAMP AUTO OFF 1 To avoid heat damage caused by the lamp it is turned off automatically when the refrigerator door is open for more t
14. prying back along seam until all clips snap out Gasket Bracket Clip Door Frame Flat Tip Screwdriver Gasket Bracket Figure 2 3 Remove gasket Pull gasket free from gasket channel on the three remaining sides of door Figure 3 Door Gasket Replacement 1 Insert gasket bracket clips 1 Insert gasket bracket edge beneath door frame edge 2 Turn upper gasket bracket spring so that the spring ends are in the door channel 3 Push in clip until you hear it Snap securely into place Gasket Bracket Clip Fr Spring Door Frame Correct Incorrect Figure 4 4 Push in remaining clip until you hear it snap securely into place Note Make sure that no part of gasket bracket edge protrudes from beneath door frame edge 2 Insert gasket into channel 1 Snap gasket assembly into the door bracket lt Inserting the Gasket Assembly into the Bracket Door gt mune Correct Figure 5 Incorrect 2 Press gasket into channels on the three remaining sides 3 4 DOOR ALIGNMENT f of doo If the space between your doors is uneven follow the instructions below to align the doors 1 With one hand lift up the door you want to raise at middle hinge 2 With other hand use pliers to insert snap ring as shown 3 Insert additional snap rings until the doors are aligned 3 Three snap rings are provided with unit Figure 6 3 Replace door frame cover Starting at top of cover and worki
15. readings in the following components Starting devices y Short open or broken Poor contact or shorted Compressor coil Coil open or shorted Wiring harness gt Poor contact or shorted gt Replace indicated component v Poor cooling performance Compressor runs Check starting voltage Low voltage Advise customer that poorly the Power supply Check voltage at Poor or broken or open starting devices contact Check current flowing Shorted in sub coil of Compressor Lack of capacity Check rating of OLP Check wiring circuit Wire is open or shorted Coil is shorted or open needs to be checked by an electrician Replace indicated component Fan motor doesn t run Replace indicated component Check Fan Motor Heavy frost buildup on Check current flow in Replace indicated EVAPORATOR the following psi component components Sensor Fuse M Check current flow in O Replace Defrost the Defrost Heater pet Heater 21 6 3 SERVICE DIAGNOSIS CHART POINTS TO BE CHECKED REMEDY Is the power cord unplugged from the outlet COMPLAINT No Cooling Cools poorly Food in the Refrigerator is frozen Condensation or ice forms inside the unit Condensation forms in the Exterior Case There is abnormal noise Door does not close well Ice and foods smell unpleasant Check if t
16. 2259503 JAN 2010 Printed in Korea
17. 6 sec 7 2 2 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 storage bin while rotating with the EJECTOR A storage bin is full The EJECTOR stops heater off B Ice storage bin is not full The EJECTOR rotates twice to open for ice f 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 7 2 3 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 5 sec The water amount will vary 5 5 sec depending on the water control FIRST STAGE owitch setting as well as the water pressure of the connected water line 26 7 2 4 Function TEST 1 This is a forced operation for TEST Service cleaning etc It is operated by pressing and holding the Fill Key for 3 seconds 2 The test works only in the Icemaking Mode It cannot be entered from the Harvest
18. AB MUST BE PUSHED IN TO RELEASE THE GEAR 3 19 2 Follow Steps to Reinstall Step 1 Reinstall the right side gear into the clip Step 2 Insert the rail into the right side gear Gears do not Step 3 Insert the rail into the left side gear and insert the need to be perpendicular to each other gear into the clip Step 4 The rail system will align itself by pushing the rails Step 5 Reinstall the freezer door by inserting the rail tabs all the way into the freezer section into the guide rail Pull the rails back out to full extension AUTERA LEAN Lv msemmmmvwe LI E 4 Step 6 Reinstall the two screws into the guide rails Step 7 Reinstall the lower basket and close the freezer one from each side door 14 3 20 WATER VALVE DISASSEMBLY METHOD 3 21 FAN AND FAN MOTOR DISASSEMBLY 1 Turn off the water Then separate the water line from the METHOD valve 1 Using a short screwdriver loosen one SCREW in DRAIN PIPE ASSEMBLY and one connected to the MOTOR COVER MOTOR COVER 2 Pull and separate the FAN ASSEMBLY and MOTOR turning counterclockwise based on the MOTOR SHAFT FAN ASSEMBLY MOTOR 3 Separate the housing and pull out the valve 25 Housing 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 DI
19. BRIGHT ORANGE GY GRAY WH BK WHITE BLACK YELLOW PINK PR PURPLE WH WHITE RD WH RED WHITE SB SKY BLUE GN YL GREEN YELLOW BL WH BLUE WHITE GN GREEN 19 6 TROUBLESHOOTING 6 1 COMPRESSOR AND ELECTRIC COMPONENTS Remove PTC Starter Rated Voltage YES OWer source from Compressor and 10 measure voltage between Terminal C of Compressor and Terminal 5 or 6 of PTC YES No Voltage OLP disconnected Replace OLP 5 NO Check connection condition Reconnect Applied voltage isn t in Advise customer that power acceptable range supply needs to be checked 115V 10 by an electrician Th f resi 1 50 Check Chacleresistanca e range of resistance is between Q ok resistance of between M C S C and Motor M S in Motor Open or short Replace Compressor Compressor Compressor 4 b WYN Check Check resistance of two resistance of terminals in PTC Reference 12 PTC Starter Starter Check OLP Check resistance of two Reference Page12 terminals in OLP YES YES Did Compressor compressor is OK Replace the Compressor gt Check starting Check the power supply Supply state under load voltage rating Compressor attempting with 10 start to re start after being off for 5 minutes 20 6 2 OTHER ELECTRICAL COMPONENTS v Not cooling at all Compressor doesn t run Check for open short or C incorrect resistance
20. D OF ICEMAKER 7 1 OPERATION PRINCIPLE 7 1 1 Operation Principle of IceMaker gt Adjusts EJECTOR to Start Position with power on Start Position e Waits until water becomes ICE after starting the Mode icemaking operation Harvest Mode Park Position Runs MOTOR to drop ice from the tray into the ICE BIN During harvest mode check if the ice bin is full gt Reaches Start Position Performs Ice Making Mode after supplying water by operating the SOLENOID in ICE VALVE To operate LINE and SERVICE press and hold the Test Mode Fill Key for 3 seconds The icemaker will run through stages Harvest Fill Icemaking 1 Turning the Icemaker stop 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 Power Switch Ejector Cube Size Indicator Light Test Button Automatic Hole use tool Shut off Arm like pin end of tool have to smooth 25 7 2 ICE MAKER FUNCTIONS 7 2 1 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
21. LG REFRIGERATOR CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL COLOR STAINLESS ST ILLUMINA AV WESTERN BLACK SB SUPER WHITE SW MODEL LFX25961 CONTENTS 5 ww 2 QE J2elle depre 3 2 PARES IDENTIFICATION MCI eie CS dui 4 3 Eu tete isa ite occu iid Ecchi eeu 5 14 REMOVING AND REPLACING REFRIGERATOR DOORS eee eee eater eee ee eee eee aaa nnn 5 DOOR usto E ea a det tad tei ace 6 7 BLY m mcam EL E 7 FAN AND FAN MOTOR GVAPORA TOR tes va PR 7 DEFROST CONTROL ASSEMBLY a 2c iom S 8 eee 8 9 NM NACE PEERS 9 DISPENSE hit dtc e tabe eia set m ihm eee ere ere 9 DISPLAY EWB REPLACEMENT ERR Re E be ea DL 9 10
22. NG locked or blocked te If less than 7 operate d OLP PTC is poor Replace MAIN PWB minutes pass after COMPRESSOR m hut 21 2 RELAY is poor off don t press the KEY and wait poor THE Check the connection CONNECTING of the black wire of WIRE is poor the MAIN PWB CONNECTOR CONS If refrigerant is Measure the leaking amount of frost sticking on EVAPORATOR and the surface temperature of the condenser pipe FREEZER If FAN MOTOR USE TEST MODE FAN MOTOR is Replace the FAN TEMPERATURE operates forced COOLING poor MOTOR CONNECTING Certify the MOTOR WIRE is poor and the connection of the black wire of the MAIN PWB CONNECTOR If Check the amount DEFROSTING is See DEFROSTING is DEFROSTING of frost sticking on poor poor is normal the EVAPORATOR Refrigerant Replace the leaking leakage part and replace any lost refrigerant If SENSOR is Of the Refrigerator SENSOR Replace SENSOR normal SENSOR RESISTANCE is poor Door Line Check the seal Door liner Replace door liner contact when the damaged door is closed 42 CHECKING PROBLEM INDICATED BY CHECK METHOD CAUSE SOLUTION If 1 COOLING is IFFREEZER Check is FREEZER Make sure the DOOR poor REFRIGERATOR TEMPERATU TEMPERATURE is isattached TEMPERATURE HE is normal too low is too low Make sure that the FAN MOTOR is Replace amount and speed poor MOTOR of co
23. R of and Display Micom Transmitter and Receiver Communication Error Abnormality of It is caused when F B signal EL P DE BLOC FAN nar operata M 295 8 1 16 TEST Mode 1 The Test mode allows checking the PCB and the function of the product as well as finding out the defective part in case of an error The test mode is operated by pressing two buttons at Display panel While in the test mode the function control button is not recognized but the recognition tone sounds After exiting the test mode be sure to reset by unplugging and then plugging in the appliance 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 NOTE The test mode is designed not to operate while all doors are closed Table 1 Function Test MODE OPERATION FUNCTION 1 Continuous operation the iei ne ases COMPRESSOR and the Freezer fan time over 5 seconds OR Push Test Switch in the 2 Stepping DAMPER OPEN main Board once 3 Defrosting HEATER OFF 4 DISPLAY LED all ON See page 39 Push FREEZER KEY and LOCK KEY at the same 1 Continuous operation of the time over 5 seconds in COMPRESSOR and the Freezer fan TEST MODE 1 OR Push 2 Stepping DAMPER CLOSE TEST Switch once in 3 Defrosting HEATER OFF TEST MODEt1 4 DISPLAY LED shows no 2 See page
24. RMINAL 3 PTC STARTER Resistance Starter Capacitor Running 4 2 4 Motor Restarting and Cooling 1 It requires approximately 5 minutes for the pressure to equalize before the compressor can restart 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 Parts may appear physically identical but could have different electrical ratings Replace parts by part number and model number Use only approved substitute parts 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 designe
25. Refrigerator and Freezer Display K B LL IE TES moo 2 am MONTH PI LED check function If simultaneously pressing Ice Plus button and freezing temperature adjustment button for a second display LED graphics on If releasing the button the LED graphic displays the previous status 31 ERROR CODE on display panel Error Display Freezer Ref Error Generation Factors Temperature Temperature Freezer Sensor Short or Disconnection of Error Freezer Sensor Refrigerator Short or Disconnection of Sensor Error Refrigerator Sensor Genser have to check Defrosting Sensor Short or Disconnection of disconnection Error Defrosting Sensor Icing Sensor Short or Disconnection of Error Icing Sensor Even though it is passed 1 Temperature Fuse hour since then Defrosting Disconnection Heater if Defrosting sensor is not disconnection DRAIN Jam over 8 C it is caused Poor Relay for Heater Error Detection Category Poor Defrosting It is caused when F B signal isn t over 65 seconds during BLDC FAN motor operating Abnormality of BLDC FAN Motor for Ice Making Poor BLDC Motor connection DRIVE IC and TR for Freezer BLDC FAN motor operating DRIVE IC and TR Abnormality of BLDC FAN Motor for Mechanic Hoom cn Poor BLDC Motor connection isn t over 65 seconds during DRIVE IC and j BLDC FAN motor operating Communication Error Poor Communication between Micom of Main PCB connection Poor T
26. SPENSER 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 4 Lay a dry towel on the floor and get ready to spill water from the water filter Pull out the Cilp Then press te collet to separate the tube from the connector and pour out the water until emptied Em Collet Tm Tube Insert Line Clip 15 3 22 PULL OUT DRAWER To remove the drawer push the tabs located on the front inside surface of each rail Next gently lift the rear left and right sides of the drawer and pull it out To reinstall pull out both rails to full extension Insert the end of rib in the bracket at left and right Making sure that the guides at the front are lined up properly gently push down on both sides Bracket 16 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 perfo
27. d for the compressor and make sure it is properly attached to the compressor Parts may appear physically identical but could have different electrical ratings Replace parts by part number and model number Use only approved substitute parts 247 4 3 OLP OVERLOAD PROTECTOR 4 5 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 activating 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 5 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 B Customer part No Name number D Base phenolic oaan UL 94 V 0 rated ate code 2 Movable arm support plated steel 3 Stationary contact support plated steel 4 Heater support plated steel 5 Heater resistance alloy Disc thermostatic alloy Movable spring temper copper alloy Contact movable silver on copper 9 Contact stationary silver on copper Slug plated steel 1 Cover polyester UL 94V 0 rated Electrical
28. e A little higher than ambient temperature Equal to ambient temperature Refrigerant level is low due to a leak Normal cooling is possible by restoring the normal amount of refrigerant and repairing the leak No discharging of Refrigerant Normal cooling is possible by restoring the normal amount of refrigerant and repairing the leak Normal discharging of the refrigerant The capillary tube is faulty Normal discharging of the Refrigerant Cooling operation restarts when heating the inlet of the capillary tube Low pressure at high side of compressor due to low refrigerant level No pressure in the high pressure part of the compressor 6 4 1 SEALED SYSTEM DIAGNOSIS Not Cooling Complaint All components operating No airflow problems Not frosted up as a defrost problem problem has been isolated to sealed system area Frost None Pattern Partial Equalization Equalization Very Fast Very Slow Very Slow Fast Very Fast Inefficient Partial Complete Compressor Restriction Restriction Condenser Cap Tube Temperature Sound Hotter than Normal Room Temperature Air Low Side Leak Yes None to Weak Loss of Change Compressor Not Pumping Trace of Oil No Undercharge The equalization test is trying to restart a compressor using a start kit after it has been operating 24 7 OPERATION PRINCIPLE AND REPAIR METHO
29. eight to Top of Case Height to Top of Door Hinge width Width door open 90 deg w o handle Width door open 90 deg w handle 44 1 4 in 2 PARTS IDENTIFICATION 1 ADJUSTABLE REFRIGERATOR SHELVING The refrigerator compartment shelves are adjustable to allow flexibility for storage needs MODULAR DOOR BINS Three interchangeable bins can be arranged to suit your storage needs REMOVABLE ICE STORAGE BIN The ice storage bin can be removed to fill ice buckets coolers or pitchers INTERIOR LAMPS Ice Bank Ice Door SS 3 DISASSEMBLY 3 1 REMOVING AND REPLACING REFRIGERATOR DOORS e Removing Refrigerator Door CAUTION Before you begin unplug the refrigerator Remove food and bins from doors gt Left Door FIG 2 1 2 Disconnect water supply tube by pushing back on the disconnect ring 4 FIG 1 Open door Loosen top hinge cover screw 1 Use flat tip screwdriver to pry back hooks on front underside of cover 3 Lift up cover Disconnect door switch wire harness 2 Pull out the tube Disconnect the three wire harnesses 5 Remove the grounding screw 6 Rotate hinge lever 7 counterclockwise Lift top hinge 8 free
30. gerator Freezer lamp 24 8 2 PCB FUNCTION 8 2 1 Power Circuit CONI a L Ewa i 2 SVC33l ICI MICOM 1 7 HINGE EARTH The secondary part of the TRANSFORMER is composed of the power supply for the display the BLDC FAN Motor drive 15 5 V the relay drive 12 Vdc and the MICOM and IC 5 Vdc The voltage for each part is as follows VA1 is a part for preventing over voltage and noise When 385V or higher power is applied the inside elements are short circuited and broken resulting in blowout of the fuse in order to protect the elements of the secondary part of the TRANSFORMER VOLTAGE vac Im TE 205 8 2 2 Load Fan amp Open Door Detection Circuit 1 Load Drive Condition Check ICE MAKER PCB HINGE EARTH HE DISPENSER CON3 N L 1 FUSE Ml 1 DEF HEATER FUSE M CEA V H WATER PILOT VALVE ou i C ST 1 3 ICE MAKER PILOT VALVE To measure outputs of the control board check voltages between the pins for the following components Cu PmMumbe Pin Number Output Voltage Compressor Con3 Pin12 NOTE When the door of the freezer refrigerator is left open for 7 minutes or longer the lamp of the freezer refrigerator turns 2 1 Freezing compartment fan MOTOR OFF 2V or less MOTOR
31. han 7 minutes 8 1 13 Alarm for Open Door 1 This feature sounds a 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 1 2 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 Opened Closed Opened Closed or Refrigerator 3 Door 3 Times 3 Times 3 Times 3 Times Buzzer gt 30 sec 30 sec 30SEC Within 1 min 1 min 30 8 1 14 Defrosting removing frost 1 Defrosting starts each time the COMPRESSOR running time reaches 7 hours 2 For initial power on or for restoring power defrosting starts when the compressor running time reaches 4 hours 3 Defrosting stops if the sensor temperature reaches 46 4 F 8 C or more If the sensor doesn t reach 46 4 F 8 C in 2 hours the defrost mode is malfunctioning Refer to the defect diagnosis function 8 1 15 4 Defrosting won t function if its sensor is defective wires are cut or short circuited 8 1 15 Defect Diagnosis Function 1 Automatic diagnosis makes servicing the refrigerator easy 2 When a defect occurs the buttons will not operate but the tones such as ding will sound 3 When the defect CODE removes the sign it returns to normal operation RESET 4 The defect CODE shows on the
32. he power switch is set to OFF Check if the fuse of the power switch is shorted Measure the voltage of the power outlet Check if the unit is placed too close to the wall Check if the unit is placed too close to the stove gas cooker or in direct sunlight Is the ambient temperature too high or the room door closed 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 Check if the Control is set to Warm position Is food placed in the cooling air outlet Check if the control is set to colder position Is the ambient temperature below 41 F 5 C Is 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 Check if the ambient temperature and humidity of the surrounding air are high Is there a gap in the door gasket Is 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 Check if the door gasket is dirty with an item like juice Is the refrigerator level Is there too much food in the refrigerator Check if the inside of the unit is dirty Are foods with a strong odor unwrapped The unit smells of plastic Other possible problems Check if frost forms
33. malfunction Make sure that the wire on each sensor is connected 257 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 Refrigerator and O F for Freezer You can adjust the Refrigerator and the Freezer control temperature by pressing the ADJUST button 2 When the power is initially applied or restored after a power failure it is set to Control temperature Previously LL IE LILA TE Jl secs am MONTH Luc ICE PLUS DISPENSER FREEZER REFRIGERATOR LIGHT FILTER ALARM LOCK 3secs 8 1 2 How to Toggle the Display between F amp C 1 The initial setting is F and the display temperature mode can be changed from F to C or C to F by pressing and holding the FRZ TEMP and the REF TEMP keys at the same time for over 5 seconds 8 1 3 Lock function dispenser and display button lock 1 When the refrigerator is first turned on the buttons are not locked The display panel shows the padlock unlocked icon 2 To lock the display the dispenser and the control panel press and hold the LOCK button for 3 seconds The locked pad lock icon is displayed 3 The LOCK button is the only control feature that remains active in the Press amp Hold Press amp Hold locked state The buzzer sound other control buttons and the dispenser are deactivated 4 To release from the locked state press and hold the LOCK b
34. ng down snap cover back into door Figure 8 3 5 FAN AND FAN MOTOR EVAPORATOR 1 Remove the freezer shelf If your refrigerator has an icemaker remove the icemaker first 2 Remove the plastic guide for slides on left side by unscrewing phillips head screws 3 Remove the grille by removing one screw and pulling the grille forward 4 Remove the Fan Motor assembly by loosening 2 screws and disassembling the shroud 5 Pull out the fan and separate the Fan Motor and Bracket MC Figure 7 FAN MOTOR D BRACKET MOTOR GRILLE Figure 9 CAUTION DO NOT ATTEMPT TO REMOVE THE MULLION REFRIGERANT LINES ce Fan Scroll Assembly Replacement 1 Remove the plastic guide for slides on left side by unscrewing phillips head screws 2 Pull the grille forward as shown in the second picture 3 Disconnect wire harness of the grille 4 Remove the scroll assembly by loosening all screws 3 3 6 DEFROST CONTROL ASSEMBLY Defrost Control assembly consists of Defrost Sensor and FUSE M The Defrost Sensor works to defrost automatically It is attached to the metal side of the Evaporator and senses its temperature At 46 F 8 C it turns the Defrost Heater off Fuse M is a safety device for preventing over heating of the Heater when defrosting 1 Pull out the grille assembly Figure 10 2 Separate the connector with the Defrost Control assembly and replace the Defrost Contr
35. ol air are sufficient by Passage of cool air Remove impurities touching the check S blocked supplied on the EVA frozen See DEFROSTING is REFRIGERATOR poor Check door seal Door liner damaged Replace Door liner when door is closed USE TEST MODES HEATER Replace HEATER forced disconnection TEMPERATURE Replace FUSE disconnection TEMPERATURE FUSE If amount of cool air from FAN MOTOR is sufficient Door Line contact DEFROSTI NO If HEATER NG is poor DEFROSTING emits heat DEFROSTING Connection is poor Check EVAPORATOR connection and wire of MAIN PWB CONNECTOR DEFROST Replace DEFROST SENSOR is poor SENSOR HEATER RELAY is Replace RY4 of poor MAIN PWB If DRAIN PIPE Check DRAIN PIPE DRAIN PIPE is Remove ice and is blocked blocked impurities Check HEATER PLATE resistance 3 If ice remains Make sure that Connection is poor Reassemble the after DEFROST DEFROST SENSOR DEFROSTING SENSOR is connected Make sure that DOOR does not Reassemble DOOR FREEZER close properly REFRIGERATOR Replace GASKET DOOR is closed 43 8 4 MAIN PWB ASSEMBLY AND PARTS LIST 8 4 1 Main PWB Assembly uae my A nmt S ay Li a A a _ LI D ame 8A oem mica am qQaooooooooo 2002000 goooooooooooo0o0o
36. ol assembly after cutting the Tie Wrap Figure 11 GRILLE ASSEMBLY Figure 10 DEFROST CONTROL ASSEMBLY Figure 11 3 LAMP Figure 12 3 7 1 Refrigerator Compartment Lamp 1 Unplug Refrigerator or disconnect power at the circuit breaker 2 If necessary remove top shelf or shelves 3 Using a flat instrument gently pry the cover loose in the front as shown Figure12 Rotate downward to remove rear tabs 4 Make sure the bulbs are cool to the touch Turn bulbs counterclockwise to remove 5 Assemble in reverse order by snapping the Lamp Cover in engaging the rear tabs followed by the front tabs Max 60 W 2EA Figure 13 3 7 2 Freezer Compartment Lamp 1 Unplug refrigerator power cord form outlet 2 Pull light bulb cover down to remove Figure13 3 Remove old bulb Replace with 60 watt appliance bulb 4 Insert tabs on back of cover into slots in freezer ceiling Push cover up to snap front into place 3 8 MULTI DUCT 2 Remove display frame assembly by making a gap between a display frame assembly and door with a flat blade screwdriver and pulling it forward The cover dispenser is attached with a hook 1 Remove the upper and lower Caps by using a flat screwdriver and remove 2 screws Figure 15 2 Disconnect the lead wire on the bottom position CAUTION When
37. or Fill mode 3 Caution If the test is performed before water in the icemaker is frozen the ejector will 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 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 Park Position Fill 5 Five seconds after Stage 5 is completed the Ice Maker returns to MICOM control The time needed to supply water resets to the pre test setting Diagnosis TABLE ITEMS INDICATOR REMARKS Five seconds after heater starts a heater 1 HEATER will go off if the temperature by sensor is higher than 10 C Five seconds after heater starts you can MOTOR confirm that a motor is moving Check if Ice Bin is full or not HALL IC If Ice bin is full the motor and heater are off and on stand by until Ice bin is empty HALL IC II You can confirm HALL IC detection of Start position VALVE Two seconds after detection of start position you can confirm that valve is on Stat TE Five seconds after fifth stage is Heset s 1 completed The icemaker resets to initial status 7 3 DEFECT DIAGNOSIS FUNCTION 7 3 1 ERROR CODES shown on Ice Maker water supply control panel DIVISION INDICATOR CONTENTS REMARKS properly Icemaking Sensor Open or short circuited wire
38. replacing the dispenser cover in the reverse order of removal be careful that the lead wire does not come out and the water tube is not pinched by the dispenser cover as shown in the picture below 3 9 MAIN PWB 1 Loosen the 3 screws on the PWB cover 3 11 DISPLAY PWB REPLACEMENT 1 Pull up and out on the dispenser cover to remove 2 Follow the steps in the pictures 3 Disconnect wire harness and replace the main PWB in the reverse order of removal 3 12 FUNNEL REPLACEMENT 1 Pull up and out on the dispenser cover to remove 2 Disconnect the wire harness 3 Replace in reverse order 3 10 DISPENSER 1 Disconnect funnel and button assembly by pulling down and forward 3 13 SUB PWB FOR WORKING DISPENSER 3 15 ICE CORNER DOOR REPLACEMENT 1 Loosen the screw on the sub PWB 1 Loosen the front screw as shown in the picture 2 Lift up the hinge with one hand 3 Pull out the Ice Corner Door with the other hand 2 Pull the sub PWB down 3 Disconnect the wire harness and replace the sub PWB in the reverse order of removal 3 16 ICEMAKER ASSEMBLY 1 Loosen two screws as shown in the first picture 3 14 DUCT DOOR REPLACEMENT 1 Pull up and out on the dispenser cover to remove 2 Disconnect the wire harness 3 Remove the funnel 4 Replace in reverse order 2 Disconnect the wire harness amp ground screw replace thelcemaker assembly in the reverse order of removal a
39. rming repairs 4 1 3 Note for Usage 1 Be 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 the 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 noise improper operation or even cause it to lock up 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 Compressor Motor 2 The compressor is a single phase induction motor 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 S C SEALED TE
40. utton Ex In selecting Ex In selecting again for 3 seconds LOCK LOCK again 8 1 4 Filter condition display function 1 There is a replacement indicator icon for the filter cartridge on the dispenser Classification In initial Power On Replace indicator 2 Water filter needs replacement once six months or of Filter RESET light on using water filter 3 Water Filter icon turn on to tell you need to replace the It jp o filter soon Filter Status FA vont m MONTH 4 After replacing the filter press and hold the lock button Display more than 3 seconds Water Filter icon turn off with reset status 28 8 1 5 Ice Plus selection Please select this function for quick freezing Function is repeat Ice Plus Icon whenever pressing Ice Plus button ce Plus function automatically turns off after a fixed time passes 8 1 6 Dispenser use selection You can select water or ice Select water crushed ice or ice cubes by cycling through the selections when pressing the DISPENSER button Hold your cup in the dispenser for a few seconds after dispensing ice or water to allow the last pieces of ice or drops of water to fall into the cup When after initially establishing the water comes out the water tank inside fills and until at the time of quality the hour is caught Pressing Switch s 8 1 7 DISPENSER LIGHT Whenever pressed the LIGHT button DISPLAY is changed as belows A 27 7
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