REFRIGERATOR
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
MODEL : LFX31945** 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
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.
-2-
,1. SPECIFICATIONS
1-1 LFX31945**
● 31 cu.ft.
ITEMS SPECIFICATIONS ITEMS SPECIFICATIONS
DOOR DESIGN Side Rounded VEGETABLE TRAY Clear Drawer Type
DIMENSIONS (inches) 35 3/4 X 30 1/4 X 70 1/4 (WXDXH) 31cu.ft. COMPRESSOR Linear
NET WEIGHT (pounds) 158kg (348lb) 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 LFX31945**
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 3/4 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 45 in
-3-
, 2. PARTS IDENTIFICATION
Adjustable refrigerator
shelf
The refrigerator
LED interior lamps compartment shelves
The interior lamps light up the are adjustable to allow
inside of the refrigerator. flexibility for storage
needs. Preserve large
Water filter size food or containers.
The water filter purifies
water. Grab-N-Go Case
The convenience of a "soft cool"
NOTE storage area and ease in spreading
The filter should be replaced product stored in this area.
every 6 months. Please refer
to°Replacing the filter° Cheese &Butter Bin
in this manual for details. Cheese & Butter and
* This function may not be Condiment bins, that
available, depending on are specially designed
the model. for food that can be
stored at a warmer
temperature. This makes
spreading butter and
Indoor ice bin slicing cheese easier.
100 ice cubes are
automatically produced.
Condiment Bin
Crisper
The crisper controls humidity
and helps vegetables and
fruit to stay crisp. Auto closing hinge
The refrigerator doors
and freezer drawers
close automatically when
Fixed door bin you push them slightly.
The fixed door bin is used (The door only closes
to preserve chilled food or automatically when it is
drinks that are of a suitable open at an angle of less
size for storing in this bin. than 30 .)
Pull out Drawer
It is a convenient feature Glide’N’Serve
that allows you to fill large When you want to store
containers such as the extra food items at a much
bin and It is useful to store. lower temperature, you
can use the temperature
Dura Base¤ Divider controller to maintain the
This is a convenient feature that lowest possible chilling
allows you to fill large containers, temperature (without
such as an ice chest, cooler or freezing).
pitcher, with ice.
F-Basket
This is a convenient
feature that allows you
to fill small frozen food,
beverage to needed
quick cooling.
-4-
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
MODEL : LFX31945** 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
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.
-2-
,1. SPECIFICATIONS
1-1 LFX31945**
● 31 cu.ft.
ITEMS SPECIFICATIONS ITEMS SPECIFICATIONS
DOOR DESIGN Side Rounded VEGETABLE TRAY Clear Drawer Type
DIMENSIONS (inches) 35 3/4 X 30 1/4 X 70 1/4 (WXDXH) 31cu.ft. COMPRESSOR Linear
NET WEIGHT (pounds) 158kg (348lb) 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 LFX31945**
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 3/4 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 45 in
-3-
, 2. PARTS IDENTIFICATION
Adjustable refrigerator
shelf
The refrigerator
LED interior lamps compartment shelves
The interior lamps light up the are adjustable to allow
inside of the refrigerator. flexibility for storage
needs. Preserve large
Water filter size food or containers.
The water filter purifies
water. Grab-N-Go Case
The convenience of a "soft cool"
NOTE storage area and ease in spreading
The filter should be replaced product stored in this area.
every 6 months. Please refer
to°Replacing the filter° Cheese &Butter Bin
in this manual for details. Cheese & Butter and
* This function may not be Condiment bins, that
available, depending on are specially designed
the model. for food that can be
stored at a warmer
temperature. This makes
spreading butter and
Indoor ice bin slicing cheese easier.
100 ice cubes are
automatically produced.
Condiment Bin
Crisper
The crisper controls humidity
and helps vegetables and
fruit to stay crisp. Auto closing hinge
The refrigerator doors
and freezer drawers
close automatically when
Fixed door bin you push them slightly.
The fixed door bin is used (The door only closes
to preserve chilled food or automatically when it is
drinks that are of a suitable open at an angle of less
size for storing in this bin. than 30 .)
Pull out Drawer
It is a convenient feature Glide’N’Serve
that allows you to fill large When you want to store
containers such as the extra food items at a much
bin and It is useful to store. lower temperature, you
can use the temperature
Dura Base¤ Divider controller to maintain the
This is a convenient feature that lowest possible chilling
allows you to fill large containers, temperature (without
such as an ice chest, cooler or freezing).
pitcher, with ice.
F-Basket
This is a convenient
feature that allows you
to fill small frozen food,
beverage to needed
quick cooling.
-4-
