Service Manuals, User Guides, Schematic Diagrams or docs for : LG Refrigerator LFXS30726 lg_LFXS30726_sm

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

MODEL : LFXS30726* COLOR : STAINLESS(ST)
CONTENTS

SAFETY PRECAUTIONS ....................................................................................................................................................... 2
1. SPECIFICATIONS ............................................................................................................................................................. 3
2. PARTS IDENTIFICATION ................................................................................................................................................. 4
3. DISASSEMBLY ................................................................................................................................................................. 5
REMOVING AND REPLACING REFRIGERATOR DOORS .......................................................................... 5
DOOR .............................................................................................................................................................. 6
SUB PCB FOR WORKING DISPENSER .........................................................................................................7
DOOR ALIGNMENT ....................................................................................................................................... 8
FAN AND FAN MOTOR................................................................................................................................... 8
DEFROST CONTROL ASSEMBLY ................................................................................................................ 8
REFRIGERATOR LIGHT (TOP) ................................................................................................................ 9-10
MULTI DUCT ................................................................................................................................................ 10
DISPENSER ................................................................................................................................................. 11
DISPLAY PCB .............................................................................................................................................. 11
ICE BUTTON ASSEMBLY ............................................................................................................................ 11
WATER BUTTON ASSMEBLY ..................................................................................................................... 11
ICE CORNER DOOR REPLACEMENT ........................................................................................................ 11
ICEMAKER REPLACEMENT ....................................................................................................................... 12
CAP DUCT MOTOR REPLACEMENT ......................................................................................................... 12
HOW TO REMOVE A ICE BIN ..................................................................................................................... 13
HOW TO PLACE ICE BIN IN POSITION........................................................................................................13
HOW TO REMOVE AND REINSTALL THE PULLOUT DRAWER ......................................................... 14-15
WATER VALVE DISASSEMBLY METHOD .................................................................................................................... 16
FAN AND FAN MOTOR DISASSEMBLY METHOD......................................................................................................... 16
PULL OUT DRAWER ...................................................................................................................................................... 17
CAUTION : SEALED SYSTEM REPAIR ......................................................................................................................... 18
3WAY VALVE SERVICE ...................................................................................................................................................18
4. ADJUSTMENT ................................................................................................................................................................ 19
COMPRESSOR ................................................................................................................................................................ 19
5. CIRCUIT DIAGRAM ........................................................................................................................................................ 20
6. TROUBLESHOOTING ............................................................................................................................................... 21-22
7. PCB PICTURE ........................................................................................................................................................... 23-24
8. Trouble Shooting ...................................................................................................................................................... 25-64
9. Reference .................................................................................................................................................................. 65-67
10. COMPONENT TESTING INFORMATION .................................................................................................................. 68-80
11. COMPRESSOR TROUBLESHOOTING ................................................................................................................... 81-95
12. ICEMAKER OPEARTING METHOD AND TROUBLE SHOOTING .......................................................................... 96-97
13. DESCRIPTION OF FUNCTION & CIRCUIT OF MICOM ......................................................................................... 98-101
14.EXPLODE VIEW & REPLACEMENT PARTS LIST ........................................................................................................102

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.

-2-
1. SPECIFICATIONS
1-1 LFXS30726*
29.8 cu.ft.
ITEMS SPECIFICATIONS ITEMS SPECIFICATIONS
DOOR DESIGN Side Rounded VEGETABLE TRAY Clear Drawer Type
DIMENSIONS (inches) 35 3/4 X 36 1/4X 70 1/4 (WXDXH) 29.8cu.ft. COMPRESSOR Linear
NET WEIGHT (pounds) 150kg (331lb) EVAPORATOR Fin Tube Type
COOLING SYSTEM Fan Cooling CONDENSER Spiral Condenser
TEMPERATURE CONTROL Micom Control REFRIGERANT R-134a (135 g)
DEFROSTING SYSTEM Full Automatic LUBRICATING OIL ISO10 (280 ml)
Heater Defrost DEFROSTING DEVICE SHEATH HEATER
DOOR FINISH PCM, VCM, Stainless REFRIGERATOR LED Module
LAMP
HANDLE TYPE Bar FREEZER LED Module
INNER CASE ABS Resin
INSULATION Polyurethane Foam

DIMENSIONS

Description LFXS30726*
Depth w/ Handles A 36 1/4 in
Depth w/o Handles B 33 3/4 in
Depth w/o Door C 29 1/2 in
Depth (Total with Door Open) D 48 1/8 in
Height to Top of Case E 68 7/8 in
Height to Top of Door Hinge F 70 1/4 in
Width G 35 3/4 in
Width (door open 90 deg. w/o handle) H 40 in
Width (door open 90 deg. w/ handle) I 44 1/4 in

-3-
2. PARTS IDENTIFICATION

Modular Door Bin
Interchangeable bins can
be arranged to suit your
storage needs.

Icemaker
Ice Bin

Ice Compartment Door

-4-
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 (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 and remove the cover.
4. Pull out the tube.
5. Disconnect all 3 wiring 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 from the latch, be careful that door does not fall forward.
7. Lift door from middle hinge pin and remove door.
8. Place the door with the insides facing up, on a not scratch surface.
Right Door -FIG. 3
1. Open the door, remove 1 screw on the top of the hinge cover. Loosen top hinge cover screw (1). Lift up cover (2).
2. Disconnect door switch wire harness and remove the 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.
CAUTION: When lifting hinge free from the latch, be careful that the door does not fall forward.
5. Place the door with the insides facing up, on a not scratch surface.

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.

Correct Incorrect

-5-
3-2 DOOR Door Gasket Replacement
Mullion Removal 1. Insert gasket into channel
Insert and press gasket into channels at doorliner.
1. Remove 2 screws.

2. Lift mullion up carefully.

Mullion Replacement
1. Connect wire harness.

3. Disconnect wire harness.

2. Insert mullion into channel.
Insert the mullion into channel at door as shown below.

Door Gasket Removal
1. Remove gasket
Remove the gasket from gasket channel at doorliner as 3. Assemble 2 screws.
shown in the illustration below.

Gasket
Channel

Gasket

-6-
-7-
3-4 Door Alignment * Ice Fan Assembly Replacement
If the level of refrigerator doors is uneven, follow the
1) Remove the plastic guide for slides on left side by
instructions below to align the doors:
unscrewing phillips head screws.
Turn the leveling legs (CCW) to raise or (CW) to lower the
2) Pull out the cover sensor to disassemble by using tools
height of the front of the refrigerator by using flat blade
shown in the figure.
screw driver or 11/32" wrench. Use the wrench (Included
3) Pull out the cover grille to disassemble by using tools
with the User Manual) to adjust the bolt in the door hinge to
shown in the figure.
adjust the height. (CW to raise or CCW to lower the height.)
4) Put your hand into the inside of grille to disassemble
shown in the figure.
5) Disconnect wire harness of the grille assembly.
6) Remove the Ice fan assembly by loosening all screws.

Down
(1) (2)

(3) (4)

3-5 FAN AND FAN MOTOR
1. Remove the freezer drawer.
2. Remove the plastic guide for slides on left side by (5) (6)
unscrewing phillips head screws.
3. Remove the grille assembly by removing four screws
and pulling the grille assembly forward.
4. Remove the Fan Motor assembly by loosening 3 screws 3-6 DEFROST CONTROL ASSEMBLY
and disassembling the shroud. Defrost Control assembly consists of Defrost Sensor and
5. Pull out the fan and separate the Fan Motor and Bracket FUSE-M.
Motor. The Defrost Sensor works to defrost automatically. It is
attached to the metal side of the Evaporator and senses its
temperature. At 46F(8

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