LG LFC24770ST Manuel utilisateur

CAUTION

BEFORE SERVICING THE UNIT,

READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

REFRIGERATOR

SERVICE MANUAL

Models:

LFC22770**

LFC24770**

LFC24786**

Colors:

Stainless (ST)

Smooth Black (SB)

Super White (SW)

CONTENTS

SAFETY PRECAUTIONS ………………………………………………………………… …..

1. Specifications …………………………………………………………………………

2. Parts Identification …………………………………………………………………….........................

3. Disassembly ………………………………………………………………………….................……....

4. Adjustment ……………………………………………………………………..................……………..

5. Circuit Diagram …………………………………………………………..................…………………..

6. PCB Picture ………………………………………………………...............……………………………

7. Troubleshooting with error display ………………………................................…………………..

8. Troubleshooting without error display …………………..............................……………………..

9. Reference ………………………………………………………………….............……………………..

10. Component Testing Information …………………………………….............................………….

11. Troubleshooting …………………………………………………....................………………………

12. Ice Maker and Dispenser working principles and repair …................................……………..

13. Description of function & Circuit Micom ………………………..............................…………….

……………

………………....

Removing and Replacing the refrigerator door …………………………..................................

Door …………………………………………………………………………………………………..

Door Alignment ………………………………………………………………………........………..

Fan and Fan Motor (Evaporator) ………………………………………………................………

Defrost Control Assembly ………………………………………………………………................

Lamp …………………………………………………………………………………………….……

Multi Duct ………………………………………………………………………………….....………

Main PWB …………………………………………………………………………………....………

How to remove and reinstall the pullout drawer ………………………..............................……

Pull out drawer ……………………………………………………………........……………………

Cover Assembly T/V ...............................................................................................................

Compressor ……………………………………………………………….....………………………

Introduction of e-linear compressor …………………………………….....................…………..

3-4

6-11

9-10

14-15

16-25

26-31

32-35

36-39

40-51

52-51

56-60

SAFETY PRECAUTIONS

Please read the following instructions before

servicing your refrigerator.

1. Unplug the power before handling any electrical

components.

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

LFC22770SB /00

LFC22770ST /00

LFC22770SW /00

LFC24770SB /00

LFC24770ST /00

LFC24770SW /00

LFC24786SB /00

LFC24786ST /00

LFC24786SW /00

Smooth

Black

Stainless

Steel

Super

White

Smooth

Black

Stainless

Steel

Super

White

Smooth

Black

Stainless

Steel

Super

White

PCM Stainless PCM PCM Stainless PCM PCM Stainless PCM

(29 3/4 x 35 1/2 x 68 1/2) in

237.4 Lb

22cuft 24cuft

(32 3/4 x 35 1/2 x 69 7/8) in

252.9 Lb

FREEZER

Basket, Quantity No

Lamp LED (Capsule)

Shelf No

Ice Maker Twisting

Ice Tray & Bank

Tray Drawer (F/U) Yes (Full Width)

Tray Drawer (F/C) No

Ice Bin

Tray Vegetable Yes (2)

Pantry Yes

Tray Drawer (F/L) Yes (plastic)

Ice Tray (2) + Ice Bin

4 fix

Tray meat No

Tray Egg No

Heater, Sheath

Anti-freezing Heater Water Tank Heater

REFRIGERATOR

Case Material Embo (normal)

Door Material

Handle Type Vista-Handle(Al)

Basket, Quantity 5full + 2small

Cover, T/V Optibin Crisper + Humidity Control

Lamp High Brightness LED

Shelf

ID Ø0.75

First Defrost 4 Hours

Defrost Cycle 7 - 40 Hours

Wire Condenser

Lubricanting Oil Polyol Ester (POE) RL-7H/7 cst 220 ± 10 cc

Drier MOLECULAR SIEVE XH-7

Polyurethan

Compressor FC75LBNA

Evaporator Fin Tube Type

Fan Cooling

Temperature Control MICOM control

Defrosting System Full Automatic

Heater Defrost

R134a

Climate class Temperate (N)

Rated Rating 115V~ / 60Hz

SPECIFICATIONS

MODELS

GENERAL FEATURES

Color

Dimensions (W*D*H)

Net Weight

Capacity

Refrigerant

Cooling System

Insulation

Condenser

Capillary Tube

Desfrosting Device

22cuft 24cuft

Depth with Handles A 35 1/2 35 1/2

Depth w/o Handles B 33 33

Depth w/o Doors C 29 29

Depth (Total with door open) D 44 3/4 46

Height to Top of Door Hinge E 68 1/2 69 7/8

Height to Top w/out Hinge F 67 1/4 68 5/8

Width G 29 3/4 32 3/4

Width (door open 90 deg. w/o handle) H 33 1/4 36 1/4

Width (door open 90 deg. with handle) I 38 1/4 41 1/4

Description

2. PARTS IDENTIFICATION

LED interior lamps

The interior lamps light up the

inside of the refrigerator.

Adjustable Refrigerator Shelf

The shelves in your refrigerator

are adjustable to meet your

individual storage needs.

Dairy Product Bin

Used to preserve

dairy products.

Modular Door Bins

Interchangeable

bins can be

arranged to suit

your storage needs.

Auto Closing Hinge

The refrigerator doors and freezer

drawers close automatically when

you push them slightly.

(The door only closes

automatically when it is open at an

angle of less than 30°).

Glide'N'Serve

Used for large party trays,

deli items and beverages.

Pullout Drawer

Used for extra storage within the

freezer compartment.

Ice Bin

Ice cubes are automatically

produced.

Crisper

Controls humidity and helps

vegetables and fruit to stay crisp.

**Replace the cover assembly imply as first

step remove the door refrigerator.

Fixed Door Bin

Used to preserve

chilled food or

drinks.

Durabase® and Durabase® Divider

The Durabase is a storage space

recommended for the preservation of

large food items. The Durabase Divider

is used to organize the Durabase area

into sections.

It can be adjusted from side to side to

accommodate items of different sizes.

3. DISASSEMBLY

3-1 REMOVING AND REPLACING REFRIGERATOR

To remove and replace the refrigerator door:

CAUTION: Before you begin, remove food and

bins from the doors.

• Open the door. Remove the top hinge cover screw (1) and

screw (1) and lift up the cover(2).

• Remove the cover.

• Disconnect wire harnesses (3).

• Remove the grounding screw (4).

• Using 10mm or 13/32-inch socket wrench, remove the 3 bolts

and lift off the Top Hinge(5). Set parts aside.

: When removing the bolts, be careful that the

door does not fall forward.

• Lift the door from the middle hinge pin and remove the door.

• Place the door, inside facing up, on a non-scratching surface.

• Replace in the reverse order.

IMPORTANT

• Mullion Removal

1. Remove 2 screws.

2. Lift mullion up carefully.

3. Disconnect wire harness.

• Door Gasket Removal

• Door Gasket Replacement

• Mullion Replacement

1. Remove gasket.

Pull gasket free from gasket channel of the four remaining

sides of door.

1. Insert gasket into channel

Press gasket into channels on the four remaining

sides of door.

1. Connect wire harness.

2. Insert mullion into channel.

Inserting mullion assy’ into bracket, door.

3. Assemble 2 screws.

DOOR

To remove the right refrigerator door:

• Open the door. Remove the top hinge cover screw (1) and

screw (1) and lift up the cover(2).

• Remove the cover.

• Disconnect wire harnesses (3).

• Remove the grounding screw (4).

• Using 10mm or 13/32-inch socket wrench, remove the 3 bolts

and lift off the Top Hinge(5). Set parts aside.

: When removing the bolts, be careful that the

door does not fall forward.

• Lift the door from the middle hinge pin and remove the door.

• Place the door, inside facing up, on a non-scratching surface.

• Replace in the reverse order.

IMPORTANT

3-2 DOOR

• Mullion Replacement

3-3 DOOR ALIGNMENT

1. Connect wire harness.

2. Insert mullion into channel.

Inserting mullion assy’ into bracket, door.

3. Assemble 2 screws.

<24cu.ft>

If the space between your doors is uneven, follow the

instructions below to align the doors:

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).

<22cu.ft>

If the space between your doors is uneven, follow the

instructions below to align the doors

With one hand, lift up the door that you would like to raise at

the middle hinge. With your other hand, use pliers to insert

snap ring as shown. Insert additional snap rings until the doors

are aligned.

(Three snap rings are provided with the refrigerator in the Use

& Care Guide packet).

1. Remove the freezer drawer. (If your refrigerator has an

icemaker, remove the icemaker first).

2. Remove the grille by pulling the grille forward.

3. Remove the Fan Motor assembly by loosening 3 screws

and disassembling the shroud.

4. Pull out the fan and separate the Fan Motor and Bracket.

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 46F(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 1)

2. Separate the connector with the Defrost Control assembly

and replace the Defrost Control assembly after cutting the Tie

Wrap. (Figure 2)

3-4 FAN AND FAN MOTOR(EVAPORATOR)

3-5 DEFROST CONTROL ASSEMBLY

FAN MOTOR

Shroud

Figure 1 Figure 2

GRILLE ASSEMBLY DEFROST-CONTROL

ASSEMBLY

3-6 LAMP

3-6-1 Refrigerator Compartment Lamp

3-6-2 Freezer Compartment Lamp

3-7 MULTI DUCT

Unplug Refrigerator, or disconnect power at the circuit

breaker.

If necessary, remove top shelf or shelves.

1) Unplug refrigerator power cord from electric outlet.

2) Put flat screwdriver into service hole and remove cover

of refrigerator light.

3) Remove the LED assembly from connector.

4) Replace the LED assembly.

1. Unplug refrigerator power cord form outlet.

2. Remove screw with driver.

3. Grasp the cover Lamp, pull the cover downward.

1. Remove the upper and lower

caps by using a flat screwdriver,

and remove 2 screws.

(Figure 3)

2. Disconnect the lead wire on

the bottom position.

3-8 MAIN PWB

1) Loosen 3 screws on the PWB cover.

2) Remove the PWB cover.

3) Disconnect wire harness and replace the main PWB in the

reverse order of removal.

Figure 3

3-9 HOW TO REMOVE AND REINSTALL THE PULLOUT DRAWER

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.

3-9-2 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 6) Reinstall the two screws into the guide rails

(one from each side).

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 7) Reinstall the lower basket, and close the freezer

door.

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