LG GR-L258 Service Manual
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LG GR-L258 Service Manual

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REFRIGERATOR
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
MODEL: GR-L258
GR-L218
COLOR: TITANIUM
WESTERN BLACK
SUPER WHITE
STAINLESS

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Summary of Contents for LG GR-L258

  • Page 1 REFRIGERATOR SERVICE MANUAL CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. COLOR: TITANIUM MODEL: GR-L258 WESTERN BLACK GR-L218 SUPER WHITE STAINLESS...

  • Page 2: Table Of Contents

    CONTENTS SAFETY PRECAUTIONS ............................... 2 1. SPECIFICATIONS................................3 2. PARTS IDENTIFICATION ..............................4 3. DISASSEMBLY................................5-13 REMOVING AND REPLACING REFRIGERATOR DOORS ....................5 DOOR ....................................6-7 TO REMOVE THE DISPENSER ............................7 DOOR ALIGNMENT ................................7 FAN AND FAN MOTOR(Evaporator) ..........................7 ICE FAN SCROLL ASSEMBLY REPLACEMENT ......................8 DEFROST CONTROL ASSEMBLY ............................

  • Page 3: Specifications

    Embossed Metal, VCM, Stainless HANDLE TYPE INNER CASE ABS Resin INSULATION Polyurethane Foam DIMENSIONS Description GR-L218 GR-L258 Depth w/ Handles 30 in. 34 1/4 in. Depth w/o Handles 27 1/2 in. 31 3/4 in. Depth w/o Door 23 5/8 in.

  • Page 4: Parts Identification

    2. PARTS IDENTIFICATION Refrigerator Light Tilt-Out Door Basket Ice Bank Filter (Inside) Durabase Ice Door Modular Door Bins Divider Refrigerator Shelves Ice Bin Supra Fresh Crisper with Water Tank Cover Tilt-Out Compartment Snack Pan Ice Room Egg Box (Ice Maker and Ice Bank) Dairy Bin Pull out Drawer Bottle Holder...

  • Page 5: Disassembly

    3. DISASSEMBLY 3-1 REMOVING AND REPLACING REFRIGERATOR DOORS Removing Refrigerator Door w w CAUTION: Before you begin, unplug the refrigerator. Remove food and bins from doors. u u Left Door -FIG. 2 1. Disconnect water supply tube by pushing back on the disconnect ring (4).-FIG. 1 2.

  • Page 6: Door

    3-2 DOOR Door Gasket Replacement 1. Insert gasket bracket clips Door Gasket Removal 1) Insert gasket bracket edge beneath door frame edge. 1. Remove door frame cover 2) Turn upper gasket bracket spring so that the spring Starting at top of cover and working down, snap cover ends are in the door channel.

  • Page 7: To Remove The Dispenser

    2) Press gasket into channels on the three remaining 3-4 DOOR ALIGNMENT sides of door. 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.

  • Page 8: Ice Fan Scroll Assembly Replacement

    * Ice Fan Scroll Assembly Replacement 3-7 LAMP 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 2 screws Figure 14 3-7-1 Refrigerator Compartment Lamp...

  • Page 9: Multi Duct

    3-9 MULTI DUCT 2) Remove display frame assembly by making a gap 1. Remove the upper and between a display frame lower Caps by using a flat assembly and door with a screwdriver, and remove 2 screws. (Figure 17) flat blade screwdriver and pulling it forward.

  • Page 10: Sub Pwb For Dispenser, Duct Door Replacement, Ice Corner Door Replacement, Ice Maker Assembly

    3-14 SUB PWB FOR WORKING DISPENSER 3-16 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. hinge 2) Pull the sub PWB down.

  • Page 11: Auger Motor Cover, Auger Motor Replacement

    3-18 AUGER MOTOR COVER 3-19 AUGER MOTOR REPLACEMENT 1) After removing the icemaker remove the (6) white 1) Remove the Ice Bin. screws holding the auger motor cover, shown in the 2) Remove the (2) screws on the front cover & the auger picutres below.

  • Page 12: Door Ice Bin

    3-20 HOW TO REMOVE A DOOR ICE BIN 3-21 HOW TO INSERT A DOOR ICE BIN 1) Grip the handles, as shown in the picture. 1) Insert the Ice Bin, slightly tilting it to avoid touching the Icemaker. (especially, ice maker lever) 2) Lift the lower part slightly.

  • Page 13: How To Remove And Reinstall The Pullout Drawer

    3-22 HOW TO REMOVE AND REINSTALL THE PULLOUT DRAWER 3-22-1 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).
  • Page 14 3-22-2 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.

  • Page 15: Adjustment

    4. ADJUSTMENT 4-1 COMPRESSOR 4-2-3 PTC-Applied Circuit Diagram Starting Method for the Motor 4-1-1 Role The compressor intakes low temperature and low pressure gas from the evaporator of the refrigerator and compresses OVERLOAD PROTECTOR this gas to high-temperature and high-pressure gas. It then delivers the gas to the condenser.

  • Page 16: Water Valve Disassembly Method

    4-3. WATER VALVE DISASSEMBLY METHOD 4). Separate the Mechanical Cover and Valve Screw. 1) Turn off the power of the refrigerator (pull out the plug). Mechanical Cover Open the FREEZER and REFRIGERATOR Door and disassemble the Lower Cover. 5) Separate the housing and pull out the valve. Housing 2) Lay a dry towel on the floor and get ready to spill water from the water tank.

  • Page 17: Olp(Overload Protector)

    4-5 OLP (OVERLOAD PROTECTOR) 4-6 TO REMOVE THE COVER PTC 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...

  • Page 18: Circuit Diagram

    5. CIRCUIT DIAGRAM - 18 -...

  • Page 19: Troubleshooting

    6. TROUBLESHOOTING 6-1 COMPRESSOR AND ELECTRIC COMPONENTS (Rated Voltage Remove PTC-Starter Power Source. ±10%)? from Compressor and measure voltage between Terminal C of Compressor and Terminal 5 or 6 of PTC. OLP disconnected? No Voltage. Replace OLP. Check connection condition. Reconnect.

  • Page 20: Other Electrical Components

    6-2 OTHER ELECTRICAL COMPONENTS M Not cooling at all Check for open short or Compressor Cause incorrect resistance readings doesn't run. in the following components a. Starting devices Short, open, or broken. Poor contact b. OLP or shorted. Coil open or shorted. c.

  • Page 21: Service Diagnosis Chart

    6-3 SERVICE DIAGNOSIS CHART COMPLAINT POINTS TO BE CHECKED REMEDY No Cooling. • Is 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. •...

  • Page 22: Refrigeration Cycle

    6-4 REFRIGERATION CYCLE M Troubleshooting Chart TEMPERATURE STATE OF STATE OF THE CAUSE REMARKS OF THE THE UNIT EVAPORATOR COMPRESSOR PARTIAL Freezer Low flowing sound of A little higher • Refrigerant level is low due LEAKAGE compartment and Refrigerant is heard and than ambient •...
  • Page 23 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 Partial Pattern? Equalization Equalization Test Test Very Fast Very Slow Very Slow Fast Very Fast...

  • Page 24: Operation Principle & Repair Method Of Icemaker

    7. OPERATION PRINCIPLE AND REPAIR METHOD OF ICEMAKER 7-1 OPERATION PRINCIPLE 7-1-1 Operation Principle of IceMaker Power On Start Position • Adjusts EJECTOR to Start Position with power on. Icemaking • Waits until water becomes ICE after starting the Mode icemaking operation.
  • Page 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.
  • Page 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 or Fill mode. 3.

  • Page 27: Description Of Function, Circuits & Error Codes

    8. DESCRIPTION OF FUNCTION & 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 0°F for freezer. You can adjust the Refrigerator and the Freezer control temperature by pressing the ADJUST button. 2.
  • Page 28 8-1-4 EXPRSS FREEZING selection Please select this function for quick freezing. • Function is repeat Express Freezing Icon whenever pressing Express Freezing button. • Express Freezing function automatically turns off after a fixed time passes. 8-1-5 Dispenser use selection You can select water or ice. Pressing ∗...
  • Page 29 8-1-9 Express Freezing 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 powered on again, Express Freezing will be canceled. 4.
  • Page 30 8-1-12 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.

  • Page 31: Error Code On Display Panel

    ERROR CODE on display panel Error Display Error Detection Error Generation Factors Remark Freezer Ref. Category Temperature Temperature Normality Normal operation of None Display Short or Disconnection Freezer Sensor Error of Freezer Sensor Short or Disconnection Refrigerator of Refrigerator Sensor Sensor Error Each Sensor have to check Short or Disconnection...
  • Page 32 8-1-14 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. 2. The test mode is operated by pressing two buttons at Display panel. 3.
  • Page 33 8-2 PCB FUNCTION 8-2-1 Power Circuit 1. Power is supplied to the control board at pin1 and 3 of connector #1. - 33 -...
  • Page 34 8-2-2 Load / Fan & Open Door Detection Circuit 1. Load Drive Condition Check To measure outputs of the control board, check voltages between the pins for the following components: Circuit Pin Number Pin Number Output Voltage I/Maker Pilot Valve Con3 Pin3 Con3 Pin2 115 VAC...
  • Page 35 2-2. Machine compartment fan Pin7 & 8 of con4 MOTOR OFF 2V or less MOTOR ON 13V~15V 2-3. Icing compartment fan Pin4 & 5 of con4 MOTOR OFF 2V or less MOTOR ON 13V~15V - 35 -...
  • Page 36 3. Open Door Detection Circuit Check Measurement Pin 4 & 5 of con4 Ref.Door Location Freezer/ Pin 5 & 6 of con5 Fre.Door Refrigerator Door Closed Open 8-2-3 Temperature Sensor Circuit RESISTANCE OF FREEZER/Icing RESISTANCE OF REFRIGERATOR & TEMPERATURE SENSOR DEFROST SENSOR &...
  • Page 37 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. 8-2-5 Dispenser Drive Circuit Circuit Pin Number Pin Number Output Voltage...
  • Page 38 8-3 TROUBLESHOOTING PROBLEM INDICATED BY CHECK CHECKING METHOD CAUSE SOLUTION POWER 1. The whole 1. FREEZER/ Check if POWER SOURCE is Replace Main PWB SOURCE is REFRIGERATOR. FREEZER/REFRIGERA poor. poor. TOR DOOR IS OPEN and check display. 2. If LAMP is dim. Check visually.
  • Page 39 PROBLEM INDICATED BY CHECK CHECKING METHOD CAUSE SOLUTION COOLING is 1. If FREEZER Check is FREEZER Make sure the DOOR poor. REFRIGERATOR TEMPERATURE is TEMPERATURE is too isattached. TEMPERATURE normal. low. is too low. 2. If amount of cool air Make sure that the FAN MOTOR is poor.
  • Page 40 8-4 MAIN PWB ASSEMBLY AND PARTS LIST 8-4-1 Main PWB Assembly Connector7 Connector6 Connector5 Connector4 Test Switch Connector1 Connector2 Connector3 - 40 -...
  • Page 41 8-4-2 Dispenser Drive PWB Assembly Connector1 Connector2 Connector4 Connector3 - 41 -...

  • Page 42: Exploded View & Replacement Parts List

    9. EXPLODED VIEW & REPLACEMENT PARTS LIST CASE PARTS CAUTION: Use the part number to order part, not the position number. 607A 207B 626A 624D 402A 103B 271C 271B 624C 103A 410A 207A 207C 624A 409D 406D 501F 402A 271B 271A 503D 282F...
  • Page 43 FREEZER PARTS CAUTION: Use the part number to order part, not the position number. 250C 250D 145C 250A 250D 250C 136B 131A 145F 237C 136A - 43 -...
  • Page 44 REFRIGERATOR PARTS CAUTION: Use the part number to order part, not the position number. 141B 141A 141B 141A 141C 141B 141A 141C 141B 140A 141C 141D 167B 161E 140C 140B 161A 154A 140D 161C 160B 161D 154B 248A 161D 161C 151C 161F 161A...

  • Page 45: Door Parts

    DOOR PARTS CAUTION: Use the part number to order part, not the position number. 241A 241C 241B 230B 230A 231B 233B 233C 233D 233A 231A 234A 212G 234B 147C 147B 147A 241D 146A 241E 237A 262C 262C 241F 241G 243A 243A 243B 243B...
  • Page 46 DISPENSER PARTS CAUTION: Use the part number to order part, not the position number. 278A 278C 402C 278B 276A 275A 278F 405A 278D 501A 276B 279D 279E 279B 280B 280C 281A 279A - 46 -...
  • Page 47 ICE & MAKER PARTS CAUTION: Use the part number to order part, not the position number. 617A 625A 616G 616D 616G 623B 616F 616H 623B 616H 627A 603A 616F 619A 603B - 47 -...
  • Page 48 ICE BANK PARTS CAUTION: Use the part number to order part, not the position number. 606A 630J 600A 611A 630F 630B 630C 630A 630K 630M 630H 614A 630E 630N 630D 630G 630L - 48 -...
  • Page 49 P/No. MFL30300501 APR., 2006 Printed in Korea...

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Gr-l218

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