LG LFX25960 Service Manual

REFRIGERATOR

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

MODEL: LFX25960ST LFX21960ST

LFX25960SW LFX21960SW LFX25960SB LFX21960SB LFX25960TT LFX21960TT

COLOR: TITANIUM

WESTERN BLACK SUPER WHITE STAINLESS

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.................................................................................................................................... 8

LAMP .................................................................................................................................................................................. 8

CONTROL BOX-REFRIGERATOR .................................................................................................................................... 8

MULTI DUCT ...................................................................................................................................................................... 9

MAIN PWB, DISPLAY PWB REPLACEMENT, FUNNEL REPLACEMENT........................................................................9

SUB PWB FOR DISPENSER, DUCT DOOR REPLACEMENT, ICE CORNER DOOR

REPLACEMENT, ICE MAKER ASSEMBLY ......................................................................................................................10

AUGER MOTOR COVER, AUGER MOTOR REPLACEMENT .........................................................................................11

DOOR ICE BIN ..................................................................................................................................................................12

HOW TO REMOVE AND REINSTALL THE PULLOUT DRAWER...............................................................................13-16

4. ADJUSTMENT............................................................................................................................................................. 17-18

COMPRESSOR................................................................................................................................................................ 17

PTC-STARTER ................................................................................................................................................................. 17

OLP(OVERLOAD PROTECTOR)......................................................................................................................................18

TO REMOVE THE COVER PTC .......................................................................................................................................18

5. CIRCUIT DIAGRAM.......................................................................................................................................................... 19

6. TROUBLESHOOTING................................................................................................................................................. 20-24

COMPRESSOR AND ELECTRIC COMPONENTS.......................................................................................................... 20

OTHER ELECTRICAL COMPONENTS ........................................................................................................................... 21

SERVICE DIAGNOSIS CHART........................................................................................................................................ 22

REFRIGERATION CYCLE .......................................................................................................................................... 23-24

7. OPERATION PRINCIPLE & REPAIR METHOD OF ICEMAKER .............................................................................. 25-27

8. DESCRIPTION OF FUNCTION, CIRCUITS & ERROR CODES..................................................................................28-42

9. EXPLODED VIEW & REPLACEMENT PARTS LIST ..................................................................................................... 43-

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.

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1. SPECIFICATIONS

21 cu. ft. / 25 cu. ft.

ITEMS SPECIFICATIONS

DOOR DESIGN Side Rounded

X 34

/4 (WX

X 69

21cu.ft)

25cu.ft)

DXH) 21cu.ft

(WXDXH) 25cu.ft

DIMENSIONS (inches)

NET WEIGHT (pounds)

COOLING SYSTEM Fan Cooling

TEMPERATURE CONTROL Micom Control

DEFROSTING SYSTEM

DOOR FINISH Embossed Metal, VCM, Stainless

HANDLE TYPE Bar

INNER CASE ABS Resin

INSULATION Polyurethane Foam

35 3/4 X 30

35 3/4

302.58 (

324.18 (

Full Automatic

Heater Defrost

DIMENSIONS

ITEMS SPECIFICATIONS

VEGETABLE TRAY Opaque Drawer Type

COMPRESSOR Recipro

EVAPORATOR Fin Tube Type

CONDENSER Wire Condenser

REFRIGERANT R-134a (125 g)

LUBRICATING OIL ISO10 (280 ml)

DEFROSTING DEVICE SHEATH HEATER

REFRIGERATOR 60 W (2EA)

LAMP

FREEZER 60 W (1EA)

Description LFX21960** LFX25960**

Depth w/ Handles A 30 in. 34 1/4 in. Depth w/o Handles B 27 1/2 in. 31 3/4 in. Depth w/o Door C 23 5/8 in. 27 7/8 in. Depth (Total with Door Open) D 42 1/4 in. 46 1 /2 in. Height to Top of Case E 68 3/8 in. 68 3/8 in. Height to Top of Door Hinge F 69 3/4 in. 69 3/4 in. Width G 35 3/4 in. 35 3/4 in. Width (door open 90 deg. w/o handle) H 39 1/4 in. 39/1/4 in. Width (door open 90 deg. w/ handle) I 44 1/4 in. 44 1/4 in.

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2. PARTS IDENTIFICATION

Ice Bank

Ice Door

Refrigerator Light

Filter (Inside)

B C

Modular Door Bins

Refrigerator Shelves

Supra Fresh Crisper with Tilt-Out Compartment

Ice Room

(Ice Maker and Ice Bank)

Pull out Drawer

Turbo Motor

Tilt-Out Door Basket

Durabase

Divider

Ice Bin

Water Tank Cover

Snack Pan

Egg Box

Dairy Bin

Bottle Holder

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3. DISASSEMBLY

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 (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 (3). Lift up cover.

3. Disconnect door switch wire harness (2). Remove cover.

4. Pull out the tube.

5. Disconnect the three wire harnesses (5). Remove the grounding screw (6).

6. Rotate hinge lever (7) counterclockwise and remove. Lift top hinge (8) free of hinge lever latch (9).

CAUTION: When lifting hinge free of latch, be careful that door does not fall forward.

7. Lift door up from middle hinge pin and remove door.

8. 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 (3).

2. Disconnect door switch wire harness (2). Remove cover.

3. Disconnect wire harness (5). Remove the grounding screw (6).

4. Rotate hinge lever (7) clockwise and remove. Lift top hinge (8) free of hinge lever latch (9).

CAUTION: When lifting hinge free of latch, be careful that door does not fall forward.

5. Lift door up from middle hinge pin (10) and remove door.

6. Place door, inside facing up, down onto a non-scratching surface.

Figure 2 Figure 3

Figure 1

- 5 -

3-2 DOOR

Frame Cover

Handle

Door

Frame

Gasket Bracket Clip

Spring

IncorrectCorrect

● 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.

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 prying back along seam until all clips snap out.

Gasket

Door

Bracket Clip

Frame

Flat Tip

Screwdriver

Gasket

Bracket

Figure 2

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.

Correct

3. Remove gasket

Pull gasket free from gasket channel on the three remaining sides of door.

Figure 3

- 6 -

Incorrect

Figure 5

2) Press gasket into channels on the three remaining

GRILLE

FAN MOTOR

FAN

BRACKET

MOTOR

sides of door.

Figure 6

3. Replace door frame cover

Starting at top of cover and working down, snap cover back into door.

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.)

Figure 7

Figure 10

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.

Figure 11

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* Ice Fan Scroll Assembly Replacement

GRILLE ASSEMBLY

DEFROST-CONTROL ASSEMBLY

CONTROL BOX

COVER 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

(1) (2)

(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 72°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 12)

2. Separate the connector with the Defrost Control assembly and replace the Defrost Control assembly after cutting the Tie Wrap. (Figure 13)

3-6 LAMP

Figure 14

3-6-1 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. 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 15

3-6-2 Freezer Compartment Lamp

1. Unplug refrigerator power cord form outlet.

2. Using a flat instrument, gently pry the lamp cover

loose in the front as shown. Rotate downward to remove the rear tabs.

3. Make sure the bulb is cool to the touch. Turn the

bulb counterclockwise to remove.

4. Replace with a new 60-watt appliance bulb.

5. Insert tabs on back of cover into slots in freezer

ceiling. Push cover up to snap front into place.

Figure 12

3-7 CONTROL BOX-REFRIGERATOR

1. First, remove all shelves in the refrigerator, than remove

Figure 13

Figure 16

the Refrigerator control Box by loosening 2 screws.

2. Remove the Refrigerator Control Box by pulling it downward.

3. Disconnect the lead wire on the right position and separate the lamp sockets.

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3-8 MULTI DUCT

1. Remove the upper and lower Caps by using a flat screwdriver, and remove 2 screws. (Figure 17)

2. Disconnect the lead wire on the bottom position.

3-9 MAIN PWB

1) Loosen the 3 screws on the PWB cover.

Figure 17

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.

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) Remove the PWB cover

3) Disconnect wire harness and replace the main PWB in the reverse order of removal.

3-10 DISPENSER

1) Disconnect funnel and button assembly by pulling down and forward.

3-11 DISPLAY PWB REPLACEMENT

1) Pull up and out on the dispenser cover to remove.

2) Follow the steps in the pictures

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.

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3-13 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.

3-15 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.

hinge

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 & ground screw replace theIcemaker assembly in the reverse order of removal.

3) It separates a ground connection screw.

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3-17 AUGER MOTOR COVER

1) After removing the icemaker remove the (5) stainless screws holding the auger motor cover, shown in the picutres below.

2) Grip the bottom of motor cover assembly and pull out it.

3) Disconnect wire harness of motor cover assembly. There is a auger motor on the back, as shown in the picture.

Auger Motor

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3-18 HOW TO REMOVE A DOOR ICE BIN

1) Grip the handles, as shown in the picture.

2) Lift the lower part slightly.

3-19 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 contacing the automatic shut off arm.

3) Take the Ice Bin out slowly.

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3-20 HOW TO REMOVE AND REINSTALL THE PULLOUT DRAWER

3-20-1 Follow Steps to Remove

Step 1) Open the freezer door.

Step 3) Remove the two screws from the guide rails (one

from each side).

Step 2) Remove the lower basket.

Step 4) Lift the freezer door up to unhook it from the rail

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 TAB MUST BE PUSHED IN TO RELEASE THE GEAR.

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3-20-2 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

need to be perpendicular to each other.

Step 4) The rail system will align itself by pushing the rails

all the way into the freezer section. Pull the rails back out to full extension.

Step 3) Insert the rail into the left side gear, and insert the

gear into the clip.

Step 5) Reinstall the freezer door by inserting the rail tabs

into the guide rail.

Step 6) Reinstall the two screws into the guide rails

(one from each side).

Step 7) Reinstall the lower basket, and close the freezer

door.

- 14 -

3-20. WATER VALVE DISASSEMBLY METHOD

Collet

Tube

Insert Line

Clip

1) Turn off the water. Then separate the water line from the valve.

3-21. FAN AND FAN MOTOR DISASSEMBLY

METHOD

1) Using a short screwdriver, loosen one SCREW in DRAIN PIPE ASSEMBLY and one connected to the MOTOR COVER.

MOTOR COVER

→

2). Separate the Mechanical Cover and Valve Screw.

Mechanical Cover

3) Separate the housing and pull out the valve.

Housing

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.

2) Pull and separate the FAN ASSEMBLY and MOTOR turning counterclockwise based on the MOTOR SHAFT.

FAN ASSEMBLY MOTOR

→

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 DISPENSER 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.)

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