LG LMX25964ST Service Manual Repair Guide

REFRIGERATOR SERVICE MANUAL CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. MODEL : LMX25964** COLOR : STAINLESS

CONTENTS -2- SAFETY PRECAUTIONS ....................................................................................................................................................... 2 1. SPECIFICATIONS .............................................................................................................................................................. 3 2. PARTS IDENTIFICATION .................................................................................................................................................. 4 3. DISASSEMBLY ............................................................................................................................................................. 5-14 REMOVING AND REPLACING REFRIGERATOR DOORS ............................................................................................... 5 DOOR INSTALLATION ....................................................................................................................................................... 6 DOOR .............................................................................................................................................................................. 7-8 TO REMOVE THE DISPENSER ......................................................................................................................................... 8 DOOR ALIGNMENT ........................................................................................................................................................... 8 FAN AND FAN MOTOR(Evaporator) .................................................................................................................................. 8 ICE FAN SCROLL ASSEMBLY REPLACEMENT ...............................................................................................................9 DEFROST CONTROL ASSEMBLY .................................................................................................................................... 9 LAMP .................................................................................................................................................................................. 9 CONTROL BOX-REFRIGERATOR .................................................................................................................................... 9 MULTI DUCT .................................................................................................................................................................... 10 MAIN PWB, DISPLAY PWB REPLACEMENT, FUNNEL REPLACEMENT ..................................................................... 10 SUB PWB FOR DISPENSER, DUCT DOOR REPLACEMENT, ICE CORNER DOOR REPLACEMENT, ICE MAKER ASSEMBLY ..................................................................................................................... 11 AUGER MOTOR COVER, AUGER MOTOR REPLACEMENT ........................................................................................ 12 DOOR ICE BIN ................................................................................................................................................................. 13 HOW TO REMOVE AND REINSTALL THE PULLOUT DRAWER .............................................................................. 14-17 4. ADJUSTMENT ............................................................................................................................................................ 18-19 COMPRESSOR ................................................................................................................................................................ 18 PTC-STARTER ................................................................................................................................................................. 18 OLP(OVERLOAD PROTECTOR) ..................................................................................................................................... 19 TO REMOVE THE COVER PTC ...................................................................................................................................... 19 5. CIRCUIT DIAGRAM ......................................................................................................................................................... 20 6. TROUBLESHOOTING ................................................................................................................................................ 21-25 COMPRESSOR AND ELECTRIC COMPONENTS .......................................................................................................... 21 OTHER ELECTRICAL COMPONENTS ............................................................................................................................ 22 SERVICE DIAGNOSIS CHART ........................................................................................................................................ 23 REFRIGERATION CYCLE .......................................................................................................................................... 24-25 7. OPERATION PRINCIPLE & REPAIR METHOD OF ICEMAKER .............................................................................. 26-28 8. DESCRIPTION OF FUNCTION, CIRCUITS & ERROR CODES ................................................................................ 29-45 9. EXPLODED VIEW 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 - Transparent Drawer Type Linear Fin Tube Type Spiral Condenser R-134a (145 g) FREOL 8G (180 ml) SHEATH HEATER LED Module(21) 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 308.65 (25cu.ft) Fan Cooling Micom Control Full Automatic Heater Defrost 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 LMX25964** 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 1/4 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

2. PARTS IDENTIFICATION - 4 - 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. LED INTERIOR LAMPS FIXED DOOR BIN INTERIOR LAMP UTILITY BIN (OPTIONAL) BOTTLE HOLDER (OPTIONAL) 1 2 3 4 5 6 7 4 5 7 2 3 1 6

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 (4).-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(3). 5. Disconnect the two wire harnesses (4). Remove the grounding screw (5). 6. Rotate hinge lever (6) counterclockwise. Lift top hinge (7) free of hinge lever latch (8). 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. 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. Disconnect wire harness (3). 4. Remove the grounding screw (4). 4. Rotate hinge lever (5) clockwise. Lift top hinge (6) free of hinge lever latch (7). CAUTION : When lifting hinge free of latch, be careful that door does not fall forward. 5. Lift door up from middle hinge pin door. 6. Place door, inside facing up, down onto a non-scratching surface. 3. DISASSEMBLY - 5 - 3-1 REMOVING AND REPLACING REFRIGERATOR DOORS (4) (5) (6) (7) (3) (1) (2) (4) (3) (6) (7) (8) (5) Figure 1 Figure 2 Figure 3 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 - 3-2 DOOR Door Gasket Removal 1. Remove door frame cover Starting at top of cover and working down, snap cover out and away from door. 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. 2. Insert gasket into channel 1) Snap gasket assembly into the door bracket. <Inserting the Gasket Assembly into the Bracket Door> 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. 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 prying back along seam until all clips snap out. 3. Remove gasket Pull gasket free from gasket channel on the three remaining sides of door. Figure 1 Frame Cover Handle Figure 4 Figure 5 Door Frame Correct Correct Incorrect Incorrect Figure 2 Door Frame Gasket Bracket Clip Gasket Bracket Flat Tip Screwdriver Figure 3 Spring Gasket Bracket Clip

- 7 - 3. Replace door frame cover Starting at top of cover and working down, snap cover back into door. 2) Press gasket into channels on the three remaining sides of door. Figure 6 Figure 8 Figure 9 Figure 7 3-3 DOOR ALIGNMENT 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. (Three snap rings are provided with unit.) 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!

- 8 - * 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) Figure 12 Figure 13 Figure 15 Figure 14 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 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 driver. 3. Grasp the cover Lamp, pull the cover downward. 3-6-2 Freezer Compartment Lamp (1) (2) CAUTION DO NOT ATTEMPT TO REMOVE THE MULLION : REFRIGERANT LINES! 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. 3-8 MAIN PWB 1) Loosen the 4 screws on the PWB cover. Figure 16 2) Remove the PWB cover 3) Disconnect wire harness and replace the main PWB in the reverse order of removal. - 9 - 3-9 DISPENSER 1) Disconnect funnel and button assembly by pulling down and forward. CAUTION : When 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. 2) Hold the left and right side of the “Cover Assembly, dispenser” as shown in the picture, and pull and remove it. The cover dispenser is attached with a hook. 3-10 DISPLAY PWB REPLACEMENT 1) Pull up and out on the dispenser cover to remove. 2) Follow the steps in the pictures

- 10 - 3-14 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. 3-15 ICEMAKER ASSEMBLY 1) Loosen two screws as shown in the first picture. 2) Disconnect the wire harness & ground screw replace theIcemaker assembly in the reverse order of removal. 3) It separates a ground connection screw. 3-11 FUNNEL REPLACEMENT 1) Pull up and out on the dispenser cover to remove. 2) Disconnect the wire harness. 3) Replace in reverse order. 3-12 SUB PWB FOR WORKING DISPENSER 1) Loosen the screw on the sub PWB. 2) Pull the sub PWB down. 3) Disconnect the wire harness and replace the sub PWB in the reverse order of removal. 3-13 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.

LG LMX25964ST Service Manual Repair Guide

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