LG LFX25992ST User manual

CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
MODEL : LFX25992** COLOR : STAINLESS(ST)
REFRIGERATOR
SERVICE MANUAL

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CONTENTS
SAFETY PRECAUTIONS ....................................................................................................................................................... 2
1. SPECIFICATIONS ............................................................................................................................................................. 3
2. PARTS IDENTIFICATION ................................................................................................................................................. 4
3. DISASSEMBLY ................................................................................................................................................................ 5-
REMOVING AND REPLACING REFRIGERATOR DOORS ............................................................................................. 5
DOOR ................................................................................................................................................................................. 6
DOOR ALIGNMENT .......................................................................................................................................................... 7
FAN AND FAN MOTOR...................................................................................................................................................... 7
DEFROST CONTROL ASSEMBLY ................................................................................................................................... 8
REFRIGERATOR LIGHT (TOP) ........................................................................................................................................ 9
MULTI DUCT ................................................................................................................................................................... 10
DISPENSER .................................................................................................................................................................... 11
DISPLAY PCB ................................................................................................................................................................. 11
ICE BUTTON ASSEMBLY ............................................................................................................................................... 11
WATER BUTTON ASSMEBLY ........................................................................................................................................ 11
ICE CORNER DOOR REPLACEMENT ........................................................................................................................... 11
ICEMAKER REPLACEMENT .......................................................................................................................................... 12
SUB PCB FOR WORKING DISPENSER ........................................................................................................................ 12
CAP DUCT MOTOR REPLACEMENT ............................................................................................................................ 13
HOW TO REMOVE A ICE BIN ........................................................................................................................................ 14
HOW TO INSERT A ICE BIN ........................................................................................................................................... 14
HOW TO REMOVE AND REINSTALL THE PULLOUT DRAWER .................................................................................. 15
WATER VALVE DISASSEMBLY METHOD .................................................................................................................... 17
FAN AND FAN MOTOR DISASSEMBLY METHOD......................................................................................................... 17
PULL OUT DRAWER ...................................................................................................................................................... 18
CAUTION : SEALED SYSTEM REPAIR ......................................................................................................................... 19
HOW TO REMOVE AND REINSTALL THE HOMEBAR..............................................................................................20-21
COVER FRONT.................................................................................................................................................................21
HOW TO REMOVE AND REINSTALL THE DOOR FOAM ASSEMBLY,REFRIGERATOR .............................................22
HOW TO REMOVE FRAME DOOR SWITCH OF DOOR FOAM......................................................................................23
HOW TO REMOVE THE HOME BAR DOOR....................................................................................................................24
4. ADJUSTMENT ................................................................................................................................................................ 25
COMPRESSOR ................................................................................................................................................................ 25
5. CIRCUIT DIAGRAM ........................................................................................................................................................ 26
6. TROUBLESHOOTING .................................................................................................................................................... 27
7. PCB PICTURE ........................................................................................................................................................... 28-29
8. Troubleshooting With Error Display ....................................................................................................................... 30-41
9. Troubleshooting Without Error Display ................................................................................................................. 42-50
10. Reference .................................................................................................................................................................. 51-56
11. COMPONENT TESTING INFORMATION ................................................................................................................. 57-66
12. COMPRESSOR TROUBLESHOOTING ................................................................................................................... 67-79
13. ICEMAKER OPEARTING METHOD AND TROUBLE SHOOTING ......................................................................... 80-83
14. DESCRIPTION OF FUNCTION & CIRCUIT OF MICOM ........................................................................................... 84-87
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
1-1 LFX25992**
DOOR DESIGN
DIMENSIONS (inches)
NET WEIGHT (pounds)
COOLING SYSTEM
TEMPERATURE CONTROL
DEFROSTING SYSTEM
DOOR FINISH
HANDLE TYPE
INNER CASE
INSULATION
ITEMS
Side Rounded
35 3/4 X 30 7/8 X 70 1/4 (WXDXH) 25cu.ft.
148kg (326lb)
Fan Cooling
Micom Control
Full Automatic
Heater Defrost
Stainless
Bar
ABS Resin
Polyurethane Foam
SPECIFICATIONS
25 cu.ft.
VEGETABLE TRAY
COMPRESSOR
EVAPORATOR
CONDENSER
REFRIGERANT
LUBRICATING OIL
DEFROSTING DEVICE
ITEMS
Clear Drawer Type
Linear
Fin Tube Type
Spiral Condenser
R-134a (135 g)
ISO10 (280 ml)
SHEATH HEATER
LED Module
LED Module
SPECIFICATIONS
LAMP REFRIGERATOR
FREEZER
DIMENSIONS
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
30 7/8 in
28 3/8 in
24 1/8 in
42 3/4 in
68 3/4 in
70 1/4 in
35 3/4 in
40 in
45 in
Description LFX25992**

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2. PARTS IDENTIFICATION
Water filter
The water filter purifies
water.
The filter should be replaced
every 6 months. Please refer
to°Replacing the filter°
in this manual for details.
* This function may not be
available, depending on
the model.
NOTE
Indoor ice bin
100 ice cubes are
automatically produced over
per 24-hour period.
Crisper
The crisper controls humidity
and helps vegetables and
fruit to stay crisp.
Fixed door bin
The fixed door bin is used
to preserve chilled food or
drinks that are of a suitable
size for storing in this bin.
Pull out Drawer
It is a convenient feature
that allows you to fill large
containers such as the extra
bin and It is useful to store. Dura Base¤ Divider
This is a convenient feature that
allows you to fill large containers,
such as an ice chest, cooler or
pitcher, with ice.
F-Basket
This is a convenient
feature that allows you
to fill small frozen food,
beverage to needed
quick cooling.
Glide’N’Serve
When you want to store
food items at a much
lower temperature, you
can use the temperature
controller to maintain the
lowest possible chilling
temperature (without
freezing).
LED interior lamps
The interior lamps light up the
inside of the refrigerator.
Grab-N-Go Case
The convenience of a "soft cool"
storage area and ease in spreading
product stored in this area.
Condiment Bin
Cheese &Butter Bin
Cheese & Butter and
Condiment bins, that
are specially designed
for food that can be
stored at a warmer
temperature. This makes
spreading butter and
slicing cheese easier.
Adjustable refrigerator
shelf
The refrigerator
compartment shelves
are adjustable to allow
flexibility for storage
needs. Preserve large
size food or containers.

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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 (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).
7. Lift door from middle hinge pin and remove door.
8. Place the door with the insides facing up, on a not scratch surface.
CAUTION: When lifting hinge free from the latch, be careful that door does not fall forward.
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.
5. Place the door with the insides facing up, on a not scratch surface.
CAUTION: When lifting hinge free from the latch, be careful that the door does not fall forward.
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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.