LG LFCS25426 SERIES User manual

REFRIGERATOR
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE PRODUCT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
MODELS : LFC25776SW
LFC25776SB
LFC25776ST
WESTERN BLACK( SB )
COLORS : SUPER WHITE(SW)
STAINLESS(ST)
LFCS25426* Diamond Black

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CONTENTS
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.
SAFETY PRECAUTIONS ............................................................................................................................... ........................ 2
1. SPECIFICATIONS ............................................................................................................................... ............................... 3
2. PARTS IDENTIFICATION ........................................................................................................ .......................................... 4
4. ADJUSTMENT ..................................................................................................................
COMPRESSOR ............................................................................................................................... .................................. 13
5. CIRCUIT DIAGRAM ............................................................................................................. ............................................ 14
6. TROUBLESHOOTING ....................................................................................................................................................... 15
ERROR CODE SUMMARY ................................................................................................................................................ 15
7. PCB PICTURE ............................................................................................................................................................. 16-17
MAIN PCB .......................................................................................................................................................................... 16
DISPLAY PCB & SUB PCB ............................................................................................................................................... 17
8. TROUBLESHOOTING WITH ERROR DISPLAY ........................................................................................................ 18-25
9. TROUBLESHOOTING WITHOUT ERROR DISPLAY ................................................................................................ 26-31
10. REFERENCE ............................................................................................................................................................. 32-35
11. COMPONENT TESTING INFORMATION ................................................................................................................ 36-44
12. TROUBLESHOOTING ............................................................................................................................................... 45-56
13. ICE MAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR ................................................................ 57-60
14. EXPLODED VIEW & REPLACEMENT PARTS LIST ................................................................................................ 61-65
3.DISASSEMBLY---------------------------------------------------------------------------------------------------------------------------------------5-12
REMOVING AND REPLACING REFRIGERATOR DOORS -------------------------------------------------------------------------------5-6
DOOR -------------------------------------------------------------------------------------------------------------------------------------------------------7
DOOR ALIGNMENT -------------------------------------------------------------------------------------------------------------- -----------------------8
LAMP------------------------------------------------------------------------------------------------------------------------- --------------------------------8
MULTI DUCT------------------------------------------------------------------------------------------------------------------- ----------------------------8
MAIN PWB--------------------------------------------------------------------------------------------------------------------- -----------------------------8
HOW TO REMOVE AND REINSTALL THE PULLOUT DRAWER-----------------------------------------------------------------------9-10
WATER VALVE DISASSEMBLY METHOD-------------------------------------------------------------------------------------------------------11
FAN AND FAN MOTOR DISASSEMBLY METHOD--------------------------------------------------------------------------------------------11
PULLOUT DRAWER------------------------------------------------------------------------------------------------------------------------------------12
13
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1. SPECIFICATIONS
Opaque Drawer Type
Linear
Fin Tube Type
Spiral Condenser
R-134a (125 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 X 34 X 69 (WXDXH) 25cu.ft
324.18 (25cu.ft)
Fan Cooling
Micom Control
Full Automatic
Heater Defrost
PCM, 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
25cu.ft
SPECIFICATIONS
Description LFC25776**
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-
-3-

2. PARTS IDENTIFICATION
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Digital Sensor
Control
Refrigerator Light
Shelves
Modular Door Bin
Glide'N'Serve
Ice Bin
Durabase
Divider
Dairy Bin
Modular Door Bin
Bottle Holder
Modular Door Bin
Pullout Drawer
Optibin Crisper
Keeps fruits and
vegetable fresh
and crisp
AUTOMATIC
ICEMAKER
Mullion

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3. DISASSEMBLY
3-1 REMOVING AND REPLACING REFRIGERATOR DOORS
REFRIGERATOR DOOR REMOVAL (CONT.)
To remove the left refrigerator door:
Open the door. Remove the top hinge cover screw (1).
Use a flat blade screwdriver to lift the tabs
on the front underside of the cover(2).
Lift up the cover.
Disconnect all the wire harnesses (3).
Remove the grounding screw(4).
Rotate hinge lever (5) counterclockwise.
Lift the top hinge (6) free of the hinge lever latch (7).
IMPORTANT: When lifting the hinge free of
The latch, 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 nonscratching
surface.
To remove the right refrigerator door:
• Open the door. Remove the top hinge cover
screw (1).
• Use a flat blade screwdriver to lift the tabs
on the front underside of the cover(2).
Lift up the cover.
• Rotate hinge lever (3) clockwise.
Lift the top hinge (4) free of the hinge lever
latch (5).
IMPORTANT: When lifting the hinge free of
the latch, be careful that the door is heavy
and may 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.
2
(2)
(3) (4)
(5)
(1)
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REFRIGERATOR DOOR REINSTALLATION
Install the right-side door first.
Lower the door onto the middle hinge pin as
shown.
Make sure the plastic sleeve is inserted in the
bottom of the door.
Install the left-side door.
Lower the door onto middle hinge pin.
Fit the top hinge (1) over the hinge lever latch
(2) and into place. Rotate the lever (3)
clockwise to secure the hinge.
Install the grounding screw (4) and connect all
the wire harnesses (5).
• Fit the top hinge (1) over the hinge lever
latch (2) and into place. Rotate the lever (3)
counterclockwise to secure the hinge.
• Insert and tighten the cover screw (4).
2
(1) (2)
(3)
(4)
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-6-

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1. Remove gasket
Pull gasket free from gasket channel on the four
remaining sides of door.
3-2 DOOR
Mullion Removal
1. Remove 2 screws.
Door Gasket Removal
2. Lift Mullion 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.
2. Insert mullion into the channel.
Insert the cover assembly into bracket, door.
Mullion Replacement
1. Connect wire harness.
3. Assemble 2 screws.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
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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.)
3-6 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 15
Figure 16
Figure 13
1. Unplug refrigerator power cord form outlet.
2. Remove screw with driver.
3. Grasp the cover Lamp, pull the cover downward.
3-4-2 Freezer Compartment Lamp
3-5 MULTI DUCT
1. Romove the upper and
lower caps with a flat
screwdriver and remove
2 screws.
(Figure 19)
2. Disconnect the lead wire
on the bottom position.
Figure 14
Figure 10
3-4 LAMP
Unplug, or disconnect power at the circuit breaker.
If necessary, remove top shelf or shelves.
1) Release 2 screws.
2) Hold both ends and pull down to remove.
3-4-1 Refrigerator Compartment Lamp
4) Use a flat tool as shown below to remove the lamp
cover.
5) To remove the LED assembly, pull apart the cover.
3) To remove the lamp case and cover, release 2 screws
as shown.
Figure 9
Figure 11
Figure 12
Cover, lamp
Case, lamp
LED, Assembly
Figure 17

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- -
3-7HOW TO REMOVE AND REINSTALL THE PULLOUT DRAWER
3-7-1 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) Removal of the freezer door is done by lifting clear
of the rail support.
Fully extend both rails.
Step 6) Remove 2 screws of both side of supporter covers
tv and disassemble the supporter cover tv.
Step 5) Remove only 1 screw of gearice, and disassemble
the bar and gearice

3-7-2 FOLLOW STEPS TO REINSTALL
Step 1) Insert both side of supporter cover tv into
connector rails, and then screw them.
Step 3) Put gear ice assembled with the bar by screw into
connector rail’s hole.
Step 4) Insert opposite gear ice into connector rail and
screw them
Step 6) Reinstall the freezer door by inserting the rail tabs
into the guide rail.
Step 8) Reinstall the lower basket, and close the freezer
door.
Step 5) 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 7) Reinstall the two screws into the guide rails
(one from each side).
Step 2) ①Assemble a bar and gear ice with screw.
②Push the otherside of the gear to inside of the
bar.
* Assemble them like as pictures
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