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LG LSC27926 Service Manual
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LG LSC27926 Service Manual

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REFRIGERATOR
SERVICE MANUAL
CAUTION
PLEASE READ CAREFULLY THE SAFETY PRECAUTIONS OF THIS MANUAL
BEFORE CHECK ING OR OPERATING THE REFRIGERATOR.
MODEL : LSC27926**

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Summary of Contents for LG LSC27926

  • Page 1 REFRIGERATOR SERVICE MANUAL CAUTION PLEASE READ CAREFULLY THE SAFETY PRECAUTIONS OF THIS MANUAL BEFORE CHECK ING OR OPERATING THE REFRIGERATOR. MODEL : LSC27926**...

  • Page 2: Table Of Contents

    CONTENTS WARNINGS AND PRECAUTIONS FOR SAFETY ........................ 3 SPECIFICATIONS................................... 4 PARTS IDENTIFICATION ............................... 5 HOW TO INSTALL THE REFRIGERATOR .......................... 6 HOW TO ADJUST DOOR HEIGHT............................ 6 FILTER....................................7 HOW TO CONTROL THE ICEMAKER WATER SUPPLY....................8 MICOM FUNCTION ................................10 EXPLANATION OF MICOM CIRCUIT ..........................

  • Page 3: Warnings And Precautions For Safety

    WARNINGS AND PRECAUTIONS FOR SAFETY Please observe the following safety precautions to use the 8. Do not fray, damage, run over, kink, bend, pull out, or refrigerator safely and correctly and to prevent accident or twist the power cord. injury when servicing. 9.

  • Page 4: Specifications

    SPECIFICATIONS ITEMS SPECIFICATIONS ITEMS SPECIFICATIONS DIMENSIONS 1771 mm (35.9x32.6x69.7in) ID Ø0.8 5 CAPILLA R Y TUBE ) . s FIRST DEFROST 4-5 Hours 286.6 COOLING SYSTE Fan Cooling DEFROST CYCLE 13-15 Hours TEMPERATURE CONTROL DEFROSTING DEVICE Micom Control Heater, Sheath Full Automatic DEFROSTING SYSTEM ANTI-SWEAT HEATER...

  • Page 5: Parts Identification

    PARTS IDENTIFICATION PWB Cover Frame Display Water Tubes Dispenser Lamp Ice & Water Dispenser Button Freezer Refrigerator Water Filter Compartment Compartment Dairy Product Corner Door Rack Lamp Shelf Automatic Door Rack Icemaker Wine Holder Lamp Egg Box Shelf Snack Drawer Bottle Guide Door Rack Shelf...

  • Page 7: How To Install The Refrigerator

    HOW TO INSTALL REFRIGERATOR 2. Filter 2. Replace with a new cartridge. Replace the filter when the indicator light comes on or the Take the new cartridge out of its packaging and remove performance of the icemker or water dispenser decreases protective cover from the o-rings.
  • Page 8 HOW TO INSTALL REFRIGERATOR 3. How to Control the Amount of Water Supplied to Icemaker. 3-1. Confirm the amount of water supplied to the icemaker. 1. Pull out the ice bin shelf in the upper part of the freezer compartment. Caution : •...
  • Page 9 (+) Driver 1. Disconnect PWB cover from the upper part of the refrigerator. 2. Adjust the amount of water supplied by using DIP switch. Water Supplying Time Control Option LSC27926** REMARKS DIP SWITCH SETTING WATER * The quantity of water...

  • Page 10: Micom Function

    MICOM FUNCTION 1. Monitor Panel ° °F ICE PLUS DISPENSER FREEZER REFRIGERATOR LIGHT/FILTER ALARM/LOCK 3SECS Ice Plus Alarm button and function selection button Lock button Dispenser selection Lamp On/O button/ button Filter status display RESET button Temperature adjustment button Temperature adjustment button for freezer compartment for refrigerator compartment - 10 -...
  • Page 11 MICOM FUNCTION 1-3. Display Second Function ° °F ICE PLUS/JET FRZ DISPENSER FREEZER REFRIGERATOR FILTER/LIGHT LOCK Buzzer sound mute Mode Exhibition Mode Display Power Change Display Degree from saving Mode Fahrenheit to Centigrade Mode 1. Buzzer sound mute Mode The buzzer sound is set to OFF. It activates by sounding the recognition sound of “Ding~”...
  • Page 12 MICOM FUNCTION 2. Description of Function 2-1-1. Function of Temperature Selection Division Power Initially On 1st Press 2st Press 3th Press 4th Press Setting temperature Temperature Medium Medium Max Medium Min Control Freezer Control -2 °F -5 °F -8 °F 7 °F 1 °F Refrigeration...
  • Page 13 MICOM FUNCTION 2-1-3. Lock function (dispenser and display button lock) 1. In power application of refrigerator, the “LOCK” text is turned o at the right side of lock graphic of display with the lock replease status. 2. If desiring to lock the dislay the dispenser and control panel, push on the LOCK button more than 3 seconds. LOCK text is turned on at the right side of lock graphic of display with lock status.
  • Page 14 MICOM FUNCTION 2-2. Dispenser use selection You can select water or ice. DISPENSER Please select water, slice ice and square ice by pressing button as you DISPENSER desire. Please press the push button lightly by catching and pushing in cup. •...
  • Page 15 MICOM FUNCTION 2-5. ICE PLUS 1. ICE PLUS is function to improve cooling speed of the freezing room by consecutively operating compressors and freezing room fan. 2. ICE PLUS is released if power failure occurs and then returns to the original status. 3.
  • Page 16 MICOM FUNCTION 2-8. Control of variable type of freezing fan 1. To increase cooling speed and load response speed, MICOM variably controls freezing room fan motor at the high speed of RPM and standard RPM. 2. MICOM only operates in the input of initial power or ICE PLUS operation or load response operation for the high speed of RPM and operates in the standard RPM in other general operation.
  • Page 17 MICOM FUNCTION 2-12. Ringing of compulsory operation, compulsory frost removal buzzer 1. If pressing the test button in the main PCB, “Phi ~” sound rings. 2. In selecting compulsory operation, alarm sound is repeated and completed in the cycle of On for 0.2 second and Off for 1.8 second three times.
  • Page 18 MICOM FUNCTION 2-15. Sequential operation of built-in product Built-in products such as compressor, frost removal heater, freezing room fan, Cooling Fan and step motor damper are sequentially operated as follows for preventing noise and part damage occurred due to simultaneous operation of a lot of parts in applying initial power and completing test.
  • Page 20 MICOM FUNCTION Note1) R2-sensor, OptiChill sensor and water tank sensor, Ice maker-sensor, Ice maker Unit are not indicated on the failure indicating part but indicated in checking Display(When pressing for more than the button of freezing temperature and super freezer button for more than 1 second). R2-sensor (middle room) Normal: LED or LCD graphic on the (C) part turns on or Abnormal Drive Micom...
  • Page 21 MICOM FUNCTION 2-17. Test Function 1. The purpose of test function is to check function of the PWB and product and to search for the failure part at the failure status. 2. Test button is placed on the main PCB of refrigerator (test switch), and the test mode will be nished after maximum 2 hours irrespective of test mode and then is reset to the normal status.
  • Page 22 MICOM FUNCTION 2-18. Function of dispenser and water dispenser built-in 1. This is function allowing ice and water to come outside without opening door. 2. If pressing the dispenser switch (rubber button) after selecting ice (cube ice, crushed ice) or water, ice and water equivalent to each come out.

  • Page 23: Explanation Of Micom Circuit

    EXPLANATION FOR MICOM CIRCUIT 1. Explanation for PWB circuit 1-1. Power circuit The power circuit includes a Switched Mode Power Supply (SMPS). It consists of a recti er (BD1 and CE1) converting AC to DC, a switch (IC2) switching the DC voltage, a transformer, and a feedback circuit (IC3 and IC4). Caution : Since high voltage (160 Vdc) is maintained at the power terminal, wait at least 3 minutes after unplugging the appliance to check the voltages to allow the current to dissipate.
  • Page 24 1-3. Reset circuit The RESET circuit allows various parts of the MICOM, such as RAM, defrosting, etc., to be restarted from the initial state when power is interrupted or restored. A LOW signal applied to the reset terminal for 10 ms causes the MICOM to reset itself.
  • Page 25 EXPLANATION FOR MICOM CIRCUIT -25-...
  • Page 26 EXPLANATION FOR MICOM CIRCUIT 3. Door opening sensing circuit Measuring part IC1 (MICOM) No. (44, 45) / (45, 46) / (47, 48) Pin Door of Freezer / Refrigerator c t i c t i Since door switches (A) and (B) are interconnected, if either fails, the other will not respond properly. If either switch fails, the light will not come on.
  • Page 27 EXPLANATION FOR MICOM CIRCUIT 1-5. Temperature sensing circuit 10KF CE18 CC32 1-6. Switch entry circuit The following circuits are sensing signal form the test switch, damper motor reed switch for testing and diagnosing the refrigerator. - 27 -...
  • Page 28 EXPLANATION FOR MICOM CIRCUIT 1-7. Option designation circuit (model separation function) The circuits shown above vary according to which features are included on your particular model. • These circuits are preset at the factory and cannot be altered. NOTE: The chart makes absolutely no sense. You have Optichill no matter which way the connection is set. c i l o i t l i h...
  • Page 29 EXPLANATION FOR MICOM CIRCUIT The motor is driven by magnetism formed in the areas of the coils and the stator. Rotation begins when a HIGH signal is applied to MICOM Pin 33 of IC10 (TA7774F). This causes an output of HIGH and LOW signals on MICOM pins 34 and 35. Explanation) The stepping motor is driven by sending signals of 3.33 mSEC via MICOM pins 33, 34, and 35, as shown in the chart below.
  • Page 30 EXPLANATION FOR MICOM CIRCUIT 1-9. Fan motor driving circuit (freezer, mechanical area) 1. The circuit cuts all power to the fan drive IC, resulting in a standby mode. 2. This circuit changes the speed of the fan motor by varying the DC voltage between 7.5 Vdc and 16 Vdc. 3.
  • Page 31 EXPLANATION FOR MICOM CIRCUIT ► Temperature compensation table at the refrigerator is as follows: Modi cation resistance 470 Ω 2 k Ω 3.3 k Ω 5.6 k Ω 8.2 k Ω 10 k Ω 12 k Ω 18 k Ω 33 k Ω...
  • Page 32 EXPLANATION FOR MICOM CIRCUIT 2. Compensation circuit for temperature at freezer Temperature compensation in CUT JCR1 +1 °C [+1.8 °F] +2 °C [+3.6 °F] JCR2 +1 °C [+1.8 °F] JCR3 -1 °C [-1.8 °F] -2 °C [-3.6 °F] JCR4 -1 °C [-1.8 °F] Compensation Compensation Temperature compensation value...
  • Page 33 EXPLANATION FOR MICOM CIRCUIT 1-11. Communication circuit and connection L/Wire between main PCB and display PCB The following communication circuit is used for exchanging information between the main MICOM of the Main PCB and the dedicated MICOM of the LED (LCD) Display PCB. A bi-directional lead wire assembly between the two boards is required for the display to function properly.
  • Page 34 EXPLANATION FOR MICOM CIRCUIT 2) Sensor resistance characteristics table Cold storage sensor 1&2 Measuring Temperature ( ° C) Freezing Sensor Frost removal sensor, Outside sensor Ω 77 k Ω -20 ° -15 ° Ω 60 k Ω Ω 47.3 k Ω -15 °...
  • Page 36 EXPLANATION FOR MICOM CIRCUIT -36-...
  • Page 37 EXPLANATION FOR MICOM CIRCUIT -37-...
  • Page 38 -38-...
  • Page 39 EXPLANATION FOR MICOM CIRCUIT -39-...
  • Page 40 -40-...
  • Page 41 -41-...

  • Page 42: Ice Maker And Dispenser Working Principles And Repair

    1-2. Dispenser Working Principles 1. This function is available in Models LSC27926**, where water and ice are available without opening freezer compartment door. 2. “Crushed Ice ” is automatically selected when power is initially applied or reapplied after power cut.

  • Page 43: Function Of Ice Maker

    1. This is to supply water into the ice maker cube mould by operating water valve in the machine room when ice ejection control is completed and ice maker mould is even. 2. The quantity of water supplied is determined by DIP switch and time. <Water Supply Quantity Table> LSC27926** REMARKS DIP SWITCH SETTING WATER...
  • Page 44 ICE MAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR 2-4. Ice Ejection Control Function 1. This is to eject ice from ice maker cube mould after ice making is completed. 2. If Hall IC signal is on within 3.6 seconds after ice ejection motor rotates in normal direction, it does not proceed ice ejection but waits.
  • Page 45 ICE MAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR 2-5 Test Function 1. It is to force the operation during operation test, service, and cleaning. The test switch is mounted under the automati c ice maker. The test function starts when the test switch is pressed for more than 0.5 second. 2.

  • Page 46: Ice Maker Troubleshooting

    ICE MAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR 3. Ice Maker Troubleshooting * Troubleshooting: it is possible to con rm by pressing freezer and refrigerator temperature control buttons for more than 1 second. (ice maker is normal if all leds are on): refer to trouble diagnposis function in MICOM function 2-8 Is DC Power (5V and 12V) Failed DC Power...

  • Page 47: Ice Maker Circuit

    ICE MAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR 4. Ice Maker Circuits -47-...
  • Page 48 ICE MAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR The above ice maker circuits are applied to LSC27926** and composed of ice maker unit in the freezer and ice maker driving part of main PWB. Water is supplied to the ice maker cube mould through the solenoid relay for ice valve of solenoid valve in the machine room by opening valve for the set time.

  • Page 49: Circuit

    CIRCUIT 3854JK1010C -49-...
  • Page 50 TROUBLE DIAGNOSIS 1. TroubleShooting * Measuring instrument: 1) No power at outlet. 1. Faulty start 2) No power on cord. Multi tester Bad connection between adapter and outlet. (faulty adapter) Check the voltage. The Inner diameter of adapter. If the voltage is within ±85% The distance between holes.
  • Page 51 TROUBLE DIAGNOSIS 2. No cooling. Heat a clogged evaporator to 2) Refrigeration system is clogged. check it. As soon as the Moisture Residual moisture Air Blowing. Not performed. cracking sound starts, the clogged. in the evaporator. Too short. evaporator will begin to Impossible moisture freeze.
  • Page 52 TROUBLE DIAGNOSIS 3. Refrigeration 1) Refrigerant Partly leaked. Weld joint leak. is weak. Parts leak. 2) Poor defrosting capacity. Check visually. Drain path (pipe) clogged. Inject adiabatics into drain Inject through the hose. hole. Seal with drain. Adiabatics lump input. Foreign materials penetration.
  • Page 53 TROUBLE DIAGNOSIS 3. Refrigeration Residual Weak heat from heater. Sheath Heater - rated. is weak. frost. Heater plate No contact to drain. Loosened stopper cord. Heater cord-L Not touching the evaporator pipe. Location of assembly (top and middle). Too short defrosting time. Defrost Senso r.

  • Page 54: Trouble Diagnosis

    TROUBLE DIAGNOSIS 3. Refrigeration 4) No cooling air circulation. is weak. Faulty fan motor. Fan is Fan shroud contact. - Clearance. constrained. Damping evaporator contact. Accumulated residual frost. Fan overload. - Fan misuse. Small cooling air Insu cient discharge. motor RPM Bad low termperature RPM characteristics.
  • Page 55 TROUBLE DIAGNOSIS 4. Warm 1) Colgged cooling path. refrigerator Adiabatics liquid leak. compartment Foreign materials. –– Adiabatics dump liquid. temperature. 2) Food storate. Store hot food. Store too much at once. Door open. Packages block air ow. 5. No automatic 1) Faulty temperature sensor in freezer or refrigerator compartment.
  • Page 56 TROUBLE DIAGNOSIS 6. Condensation 4) Condensation on door. and ice Condensation on the duct door. - Duct door heater is cut. formation. Condensation on the Recess Heater is cut. dispense recess. Duct door is open. / Foreign material clogging. Not fully lled Condensation on the Surface.
  • Page 57 TROUBLE DIAGNOSIS 7. Sounds 1) Compressor compartment operating sounds. Transformer sound. Its own fault. –– Core gap. Bad connection. –– Correct screw connection. Drip tray vibration sound. Bad assembly. Distortion. Foreign materials inside. Back cover machine sound. Bad connection. Partly damaged. Condenser drain sound.
  • Page 58 TROUBLE DIAGNOSIS 8. Faulty lamp 1) Lamp problem. Filament blows out. (freezer and Glass is broken. refrigerator 2) Bad lamp assembly. Not inserted. compartment). Loosened by vibration. 3) Bad lamp socket. Disconnection. Bad soldering. Bad rivet contact. Short. Water penetration. Low water level in tray.
  • Page 59 TROUBLE DIAGNOSIS 10. Structure, 1) Door foam. appearance, Sag. Hinge loose Bolt is loosened during and others. transportation. Not tightly fastened. Screw worn out . Weak gasket Adhesion surface. adhesion. Fixed tape. Not well xed. Hinge interference. Bigger door foam. Noise during Hinge-Pin tilted-Poor atness.

  • Page 60: Faults

    2. Faults 2-1. Power No power on - Power cord cut. - Check the voltage with tester. -Replace the components. outlet. - Faulty connector insertion. - Check visually. -Reconnect the connecting parts. - Faulty connection between plug - Check visually. -Reconnect the connecting parts.
  • Page 61 2-3. Temperature High Poor cool air circulation due to faulty - Lock –– Check resistance with a - Replace fan motor. Ω: short. compartment. ∞Ω: cut. - Reconnect and reinsert. - Rotate rotor manually and check rotation. - Wire is cut. - Bad terminal contact: Check - Maintain clearance and remove ice terminal visually.
  • Page 62 2-4. Cooling High Refrigerant leak. Check sequence Weld the leaking part, recharge the Drier must be replaced. s t r . t n e l t . t n a i l compartment (high pressure side). 2. Check the end of compressor sealing pipe (low pressure side).
  • Page 63 High Cycle pipe is clogged. Check sequence. - Heat up compressor discharging Direr must be replaced. . y l . t n If it is not, compressor discharging weld, evacuate, and recharge joints might be clogged. the refrigerant. 2. Manually check whether hot line - If it's warm, OK.
  • Page 64 2-5. Defrosting failure No defrosting Heater does not generate heat as 1. Check the resistance of heater Heating wire is short and wire is cut Seal the lead wire with the heating wire is cut or the circuit 0 Ω: Short. ∞Ω: Cut. •...
  • Page 65 No defrosting Melting fuse blows. - Check melting fuse with tester. - Faullty parts: parts replacement. 1) Lead wire is cut. If 0 Ω ∞Ω: wire is cut. resistance with a tester. Ice in the Suction duct. 1. Check the inner duct with mirror. 1) Turn power o .
  • Page 66 2-6. Icing Icing in the 1) Bad circulation of cool air. - Check the food is stored properly - Be acquainted with how to use. - Check the defrost refrigerator - Clogged intake port in the (check discharge and intake port - Sealing on connecting parts.
  • Page 67 Problems Causes Checks Measures Remarks Ice in the freezer 1)Bad cooling air circulation -Check food storage conditions -Be acquainted with how to use -Check the parts related compartment. - Intake port is clogged in the freezer visually.(Check clogging at intake - Check defrost (Check ice on the to defrosting if the .
  • Page 68 2-7. Sound Hiss sound 1. Loud sound of compressor 1.1 Check the level of the 1) Maintain horizontal level. o i t 1.2 Check the bushing seat are sagged and aged. conditions (sagging and aging). 3) Touch the piping at various place along its route.
  • Page 69 Vibration sound 1. Vibration of shelves and foods in 1-1. Remove and replace the 1) Reassemble the vibrating parts Clack 2. Pipes interference and capillary 1-2. Check light food and container vibration is severe. tube touching in the compressor. on the shelves. 2) Leave a clearance where parts compartment.
  • Page 70 Sound Popping It happens when refrigerant expands - Check the sound of refrigerant at the - Check the restrainer attached on the l i p r a l i n i a i t a l l o i t a l l i i y r i r f...
  • Page 71 2-8. Odor Food Odor. Food (garlic, kimchi, etc) - Check the food is not wrapped. - Dry the deodorizer in a sunny place - Check the shelves or inner with adequate ventilation. wall are stained with food juice. - Store the food in the closed - Be sure food is securely covered container instead of vinyl wraps.
  • Page 72 2-9. Micom Bad PCB All display Bad connection Bad connector Visual check on connector Reconnect LCD are o . between Main PCB connection from main connection. connector. electric power. and display circuit. PCB to display PCB. Defective PCB PCB transformer Check resistance of PCB Replace PCB Applicable to...
  • Page 73 Bad cooling. Freezer Compressor does Compressor Lead Wire Check compressor Lead Wire Reconnect Lead temperature is not start. is cut. with a tester. Wire. i t c a t l driving relay. (3&9) after pressing main PCB and RY2 or PCB. driving circuit in c t i c r i...
  • Page 74 Problems Symptom Causes Check s Measures Remarks Wrong Defective Step Motor Check Step Motor Check if Step Motor damper Reconnect lead Bad cooling Refrigerator Damper. damper motor and motor and reed switch lead wire. c t i wire are cut. Check Refer to Step Motor damper Replace Step Motor Step Motor damper...
  • Page 75 Bad defrost Defrost is not Defrost lead wire is cut Check if defrost lead wire is cut with a Reconnect lead Defective defrost driving relay. Check the voltage of CON2 (1 and 7) Replace relay (RY 7 Refer to load with a tester after pressing main and RY 3) or PCB.
  • Page 76 Defective Buzzer does Trouble mode indication. Check trouble diagnosis function. Repair troubles Refer to mode display button. not sound indication in and buttons function do not operate. explanations. Buzzer Defective connecting lead wire from Check lead wire associated with door Repair lead wire.

  • Page 77: Cooling Cycle Heavy Repair

    TROUBLE DIAGNOSIS 3. Cooling Cycle Heavy Repair 3-1. The Heavy Repair Standards for Refrigerator with R134a Refrigerant Items Unit Standards Purposes Remarks Pipe and piping Min. Pipe:within 1 hour. To protect The opening time should be reduced to a system opening time. Comp:within Moisture half of the standards during rain and...
  • Page 78 TROUBLE DIAGNOSIS 3-2. Summary Of Heavy Repair Trouble diagnosis Remove refrigerant - Cut charging pipe ends and discharge refrigerant from Filter, side cutters Residuals drier and compressor. - Use R134a oil and refrigerant for compressor and drier Pipe Cutter, Gas welder, N - Con rm N sealing and packing conditions before use.
  • Page 79 TROUBLE DIAGNOSIS 3-3. Precautions During Heavy Repair 1. Use of tools. 1) Use special parts and tools for R134a. 2. Recovery of refrigerant. 1) Continue to recover the refrigerant for more than 5 minutes after turning the refrigerator o . 2) Install a piercing type valve on the high pressure line (drier side).
  • Page 80 TROUBLE DIAGNOSIS 3-4. Practical Work For Heavy Repair Evaporator 1. Removal of residual Low pressure side refrigerant. KEY POINT Hot Line Compressor Observe the sequence for removal of refrigerant. Drier Suction (If not, compressor oil may leak.) High pressure side Release Condenser Refrigent...
  • Page 81 TROUBLE DIAGNOSIS Evaporator 4. Vacuum degassing. Suction pipe Hot Line Compressor Drier Condenser pressure High Blue pressure Yellow KEY POINT - If power is applied Vaccum Pump during vacuum degassing, vacuum degassing shall be more e ective. Pipe Connection - Run the compressor Connect the red hose to the high pressure side and the blue hose to the while charging the system.
  • Page 82 TROUBLE DIAGNOSIS Evaporator Hot Line Compressor Drier Condenser Charging Canister 4) Refrigerant Charging Charge refrigerant while operating a compressor as shown above. 5) Pinch the charging pipe with a pinch-o plier after completion of charging. 6) Braze the end of a pinched charging pipe with copper brazer and take a gas leakage test on the welded parts.
  • Page 83 TROUBLE DIAGNOSIS 3-6. Brazing Reference Drawings -83-...

  • Page 84: How To Deal With Claims

    TROUBLE DIAGNOSIS 4. HOW TO DEAL WITH CLAIMS 4-1. Sound Hiss sounds Explain general principles of sounds. • All refrigerators make noises when they run. The compressor and fan produce sounds. There is a fan in the freezer compartment which blows cool air to freezer and refrigerator compartments.
  • Page 85 TROUBLE DIAGNOSIS Sounds of water owing Explain the ow of refrigerant. • When the refrigerator stops, the water owing sound happens. This sound happens when the liquid or vapor refrigerant ows from the evaporator to compressor. Click sounds Explain the characteristics of moving parts. •...
  • Page 86 TROUBLE DIAGNOSIS 4-2. Measures for Symptoms on Temperature Refrigeration is weak. Check temperature set in the temperature control knob. • Refrigerator is generally delivered with the button set at normal use (MID). But customer can adjust the temperature set depending on their habit and taste. If you feel the refrigeration is weak, then set the temperature control button at strong position.
  • Page 87 TROUBLE DIAGNOSIS 4-3. Odor and Frost Odor in the refrigerator compartment. Explain the basic principles of food odor. • Each food has its own particular odor. Therefore it is impossible to prevent or avoid food odor completely when food is stored in the completely sealed refrigerator compartment.
  • Page 88 TROUBLE DIAGNOSIS 4-5. Others The refrigerator case is hot. Explain the principles of radiator. • The radiator pipes are installed in the refrigerator case and partition plate between the refrigerator and the freezer compartment in order to prevent condensation formation. Particularly in summer or after installation of refrigerator, it may feel hot but it is normal.

  • Page 89: How To Disassemble And Assemble

    HOW TO DISASSEMBLE AND ASSEMBLE 1. DOOR (3) Disconnect upper hinge from the hinge supporter by grasping the front part of upper hinge and lifting up 1) Remove lower cover and then disconnect water (Hinge Assembly, U) in arrow direction A and pull forward in arrow B direction.

  • Page 90: Handle

    HOW TO DISASSEMBLE AND ASSEMBLE 2. HANDLE 1. Aluminum short handle Model 1) Grasp the handle by both hands and hold it upward. -90-...

  • Page 91: Fan Shroud Grille

    3. FAN SHROUD GRILLE 4. ICEMAKER ASSEMBLY 1) Loosen two screws after disconnecting a cap screw of a 1. Dispenser Model grille fan (U) with a screwdriver balde. 1) How to disassemble: 2) Disassembly of a grille fan (U) : Pull forward after (1) Remove ice bank from the freezer compartment.

  • Page 92: Dispenser

    HOW TO DISASSEMBLE AND ASSEMBLE 5. DISPENSER 4) Loosen four screws with a phillips screwdriver and pull the funnel Assembly to disconnect. 1) Disconnect funnel and button assembly by pulling down and forward. Funnel Assembly Funnel Assembly Button 5) The Duct Cap Assembly can be disconnected if the hold lever connecting screw is loosened with a phillips driver.
  • Page 93 HOW TO DISASSEMBLE AND ASSEMBLE 7) Dispenser Related Parts 277A FRAME ASSEMBLY, DISPLAY COVER, DISPENSER DECO, FRAME DISPLAY PWB(PCB) ASSEMBLY, DISPLAY BUTTON ASSEMBLY BUTTON DECO FUNNEL ASSEMBLY MICRO SWITCH FRAME, FUNNEL 10 LEVER(SWITCH) 11 FUNNEL 12 BUTTON LEVER 13 HOLLDER BUTTON 14 SOLENOID ASSEMBLY 15 SPRING 16 LEVER HOLDER...

  • Page 94: Exploded View

    #EV# EXPLODED VIEW FREEZER DOOR PART 200A 203A 201A 241F 212J 241G 700A 241G 241E 243A -94-...
  • Page 95 #EV# EXPLODED VIEW REFRIGERATOR DOOR PART 241A 241C 230A 241B 231A 233A 212G 241H 237A 212J 241H 700A 237A 241H 241D 243B -95-...
  • Page 96 #EV# EXPLODED VIEW FREEZER COMPARTMENT 281A 271B 271A 330B 405G 404A 405A 332A 610E 329A 903E 128C 316B 409B 301A 128C 128D 158C 128E 128D 128F 149A 401A 281G 149B 106A 418A 136A 332B 103C 319B 136B -96-...
  • Page 97 #EV# EXPLODED VIEW REFRIGERATOR COMPARTMENT 140A 146A 281B 271B 611A 271C 128G 611E 141A 611C 140B 128H 610E 120B 120A 903D 170A 610E 409B 604H 161A 128J 158A 128K 161B 281K 151A 281H 154A 106A 409A 128A 151B 128B 158B -97-...
  • Page 98 #EV# EXPLODED VIEW ICE & WATER PART 622B 625A 616E 627D 616D 627D 627C 627A 412A 619A 612A 612C 612B 600A 131A 607A 149D 602A 128L 600B 131C 406D 149E 125A 303B 610A 412B 614A 110B 621B 606A -98-...
  • Page 99 #EV# EXPLODED VIEW MACHINE COMPARTMENT 501F 103B 411A 410G 410H 501A 308A 310A 103A 309A 501K 412D 304A 316A 307A 317A 328A 323B 105A 312A 319C 329C 315A 404B 305B 419A 405C 305C 319A 319E 305C 305B -99-...
  • Page 100 #EV# EXPLODED VIEW DISPENSER PART 161C 278A 113E 282G 405H 113F 409B 617A 276C 279B 501B 279A *Only model: LSC27926ST 280F 279B 276C 501B 279A 280F 281F 276B 276A 281F 278G 276A 276B -100-...
  • Page 101 MFL62215904 February, 2009...

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