LG LFX25976 Refrigerators (LFX25976ST/LFX25976WB/LFX25976SW) OEM Service Manual

REFRIGERATOR SERVICE MANUAL CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. MODEL: LFX25976ST LFX25976WB LFX25976SW COLOR : STAINLESS(ST) WESTERN BLACK SUPER WHITE

CONTENTS - 2 - SAFETY PRECAUTIONS ....................................................................................................................................................... 2 1. SPECIFICATIONS ............................................................................................................................................................. 3 2. PARTS IDENTIFICATION ................................................................................................................................................. 4 3. DISASSEMBLY ............................................................................................................................................................ 5-16 REMOVING AND REPLACING REFRIGERATOR DOORS ............................................................................................. 5 DOOR ................................................................................................................................................................................ 6 DOOR ALIGNMENT .......................................................................................................................................................... 7 FAN AND FAN MOTOR(EVAPORATOR) ......................................................................................................................... 7 DEFROST CONTROL ASSEMBLY ................................................................................................................................... 7 LAMP ................................................................................................................................................................................. 8 MULTI DUCT ..................................................................................................................................................................... 8 MAIN PWB ......................................................................................................................................................................... 9 DISPENSER ...................................................................................................................................................................... 9 DISPLAY PCB ................................................................................................................................................................... 9 ICE BUTTON ASSEMBLY ................................................................................................................................................. 9 WATER BUTTON ASSMEBLY ........................................................................................................................................ 10 ICE CORNER DOOR REPLACEMENT ........................................................................................................................... 10 ICEMAKER REPLACEMENT ..................................................................................................................................... 10-11 SUB PWB FOR WORKING DISPENSER ....................................................................................................................... 11 CAP DUCT MOTOR REPLACEMENT ............................................................................................................................ 11 HOW TO REMOVE A ICE BIN ........................................................................................................................................ 12 HOW TO INSERT A ICE BIN ........................................................................................................................................... 12 HOW TO REMOVE AND REINSTALL THE PULLOUT DRAWER ............................................................................. 13-14 WATER VALVE DISASSEMBLY METHOD .................................................................................................................... 15 FAN AND FAN MOTOR DISASSEMBLY METHOD ........................................................................................................ 15 PULL OUT DRAWER ...................................................................................................................................................... 16 4. ADJUSTMENT ........................................................................................................................................................... 17-19 COMPRESSOR ................................................................................................................................................................ 17 INTRODUCTION OF E-LINEAR COMPRESSOR ...................................................................................................... 17-19 5. CIRCUIT DIAGRAM ........................................................................................................................................................ 20 6. TROUBLESHOOTING .................................................................................................................................................... 21 7. PCB PICTURE ........................................................................................................................................................... 22-23 8. Troubleshooting With Error Display ....................................................................................................................... 24-32 9. Troubleshooting Without Error Display ................................................................................................................. 33-41 10. Reference .................................................................................................................................................................. 42-47 11. COMPONENT TESTING INFORMATION ................................................................................................................. 48-56 12. TROUBLESHOOTING .............................................................................................................................................. 57-63 13. ICEMAKER OPEARTING AND TROUBLE SHOOTING METHOD ......................................................................... 64-67 14. DESCRIPTION OF FUNCTION & CIRCUIT OF MICOM ........................................................................................... 68-71 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.

1. SPECIFICATIONS - 3 - Opaque Drawer Type Linear Fin Tube Type Spiral Condenser R-134a (140 g) ISO10 (280 ml) SHEATH HEATER LED Module(27) Bulb Lamp VEGETABLE TRAY COMPRESSOR EVAPORATOR CONDENSER REFRIGERANT LUBRICATING OIL DEFROSTING DEVICE REFRIGERATOR FREEZER LAMP ITEMS SPECIFICATIONS Side Rounded 35 3/ 4 X 34 1/ 4 X 69 3/ 4 (WxDxH) 25cu.ft 324.18 (25cu.ft) Fan Cooling Micom Control Full Automatic Heater Defrost Embossed Metal, VCM, Stainless Bar ABS Resin Polyurethane Foam DOOR DESIGN DIMENSIONS (inches) NET WEIGHT (pounds) COOLING SYSTEM TEMPERATURE CONTROL DEFROSTING SYSTEM DOOR FINISH HANDLE TYPE INNER CASE INSULATION ITEMS SPECIFICATIONS Description LFX25976 Depth w/ Handles Depth w/o Handles Depth w/o Door Depth (Total with Door Open) Height 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) A B C D E F G H I 34 1/4 in. 31 3/4 in. 27 7/8 in. 46 1/2 in. 68 3/8 in. 69 3/4 in. 35 3/4 in. 39 1/4 in. 44 1/4 in. DIMENSIONS 25 cu. ft.

- 4 - 2. PARTS IDENTIFICATION ADJUSTABLE REFRIGERATOR SHELVING The refrigerator compartment shelves are adjustable to allow flexibility for storage needs. 1 GALLON STORAGE BINS Three interchangeable bins can be arranged to suit your storage needs. 2 REMOVABLE ICE STORAGE BIN The ice storage bin can be removed to fill ice buckets, coolers, or pitchers. 3 LED INTERIOR LAMPS Refrigerator interior is lit by the LED array. 4 CAN STORAGE BIN 5 FIXED DOOR BINS 6

3. DISASSEMBLY - 5 - 3-1 REMOVING AND REPLACING REFRIGERATOR DOORS Removing Refrigerator Door CAUTION: Before you begin, unplug the refrigerator. Remove food and bins from doors. Left Door -FIG. 2 1. Disconnect water supply tube by pushing back on the disconnect ring (3).-FIG. 1 2. Open door. Loosen top hinge cover screw (1). Use flat tip screwdriver to pry back hooks on front underside of cover (2). Lift up cover. 3. Disconnect door switch wire harness. Remove cover. 4. Pull out the tube. 5. Disconnect the three wire harnesses (4). Remove the grounding screw (5). 6. Rotate hinge lever (6) counterclockwise. Lift top hinge (7) free of hinge lever latch (8). 7. Lift door from middle hinge pin and remove door. 8. Place door, inside facing up, down onto a non-scratching surface. CAUTION: When lifting hinge free of latch, be careful that door does not fall forward. Right Door -FIG. 3 1. Open door. Loosen top hinge cover screw (1). Lift up cover (2). 2. Disconnect door switch wire harness. Remove cover. 3. Rotate hinge lever (3) clockwise. Lift top hinge (4) free of hinge lever latch (5). 4. Lift door from middle hinge pin and remove door. 5. Place door, inside facing up, down onto a non-scratching surface. CAUTION: When lifting hinge free of latch, be careful that door does not fall forward. Figure 2 Figure 3 Figure 1 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.

- 6 - 1. Remove gasket Pull gasket free from gasket channel on the four remaining sides of door. Figure 3 3-2 DOOR Pillar Removal 1. Remove 2 screws. Door Gasket Removal 2. Lift pillar up carefully. 3. Disconnect wire harness. Door Gasket Replacement 1. Insert gasket into channel Press gasket into channels on the four remaining sides of door. Figure 6 2. Insert pillar into channel. Inserting pillar assy’ into bracket, door Pillar Replacement 1. Connect wire harness. 3. Assemble 2 screws.

- 7 - Figure 8 Figure 9 3-3 Door Alignment If the space between your doors is uneven, follow the instructions below to align the doors: Remove the Base Grillie. Turn the leveling legs (CCW) to raise or (CW) to lower the height of the front of the refrigerator by using flat blade screw driver or 11/32" wrench. Use the wrench (Included with the User Manual) to adjust the bolt in the door hinge to adjust the height. (CCW to raise or CW to lower the height.) 3-4 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. BRACKET MOTOR GRILLE FAN FAN MOTOR CAUTION DO NOT ATTEMPT TO REMOVE THE MULLION : REFRIGERANT LINES! * Ice 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) (4) 3-5 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 Control assembly after cutting the Tie Wrap. (Figure 11) Figure 10 Figure 11 GRILLE ASSEMBLY DEFROST-CONTROL ASSEMBLY (1) (2) CAUTION DO NOT ATTEMPT TO REMOVE THE MULLION : REFRIGERANT LINES!

- 8 - Figure 12 Figure 13 Figure 15 Figure 14 Cover, Lamp LED, Assembly Case Lamp 3-6 LAMP Unplug Refrigerator, or disconnect power at the circuit breaker. If necessary, remove top shelf or shelves. 1) Release 2 screws. 2) Hold both ends with your both hands and pull it downward to remove it. 3) Use a flat tool as shown below to remove the cover lamp. 3-6-1 Refrigerator Compartment Lamp 1. Unplug refrigerator power cord form outlet. 2. Remove screw with direver. 3. Grasp the cover Lamp,pull the cover downward. 3-6-2 Freezer Compartment Lamp 4) As shown below, use a flat tool to remove the cover lamp. 3-7 MULTI DUCT 1. Remove the upper and lower Caps by using a flat screwdriver, and remove 2 screws. (Figure 16) 2. Disconnect the lead wire on the bottom position. Figure 16

- 9 - - 9 - 3-8 MAIN PWB 1) Loosen the 3 screws on the PWB cover. 3-9 DISPENSER 1) Pull out the darin 2) Hold the inner side of cover dispenser with both hands at the handle side to pull it out forward. 2) Remove the PWB cover 3) Disconnect wire harness and replace the main PWB in the reverse order of removal. 3-10 DISPLAY PCB As shown below, remove 1 case PCB fixing screw. Remove the display PCB fixing screw. 3-11 ICE BUTTON ASSEMBLY 1) Remove the screw fixing the button lever. 2) Push the spring from the hanging hook to remove it. 3) Apply some pressure to the rib in direction and lift the button in direction. 3) If nozzle is interfered with button, push and pull out the bottom of button. 4) Rmove the connected part of Lead wire. CAUTION: When replacing the dispensor 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 dispensor. Case, PCB Button Lever Display PCB

- 10 - 3-13 ICE CORNER DOOR REPLACEMENT 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. 3-12 WATER BUTTON ASSMEBLY 1) Romove screws. 2) Grasp the Button assembly and lift up. Button Lever hinge 3-14 ICEMAKER REPLACEMENT 1) Remove the stainless screws marked in the picture below. 2) Grasp the bottom of motor cover assembly and pull it out slowly. 3) Disconnect wire harness from wall of compartment. In-door motor

LG LFX25976 Refrigerators (LFX25976ST/LFX25976WB/LFX25976SW) OEM Service Manual

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