CAUTIONPLEASE READ CAREFULLY THE SAFETY PRECAUTIONS OF THIS MANUAL BEFORE CHECKING OR OPERATING THE REFRIGERATOR.
REFRIGERATORSERVICE MANUAL
LRSC26944SW, LRSC26944TTLRSC26930SW, LRSC26930TTLRSC26922SW, LRSC26922TTLRSC26920SW, LRSC26920TT
LRSC26911SW, LRSC26911TTLRSC26910SW, LRSC26910TT
LRSC26980TT
http://biz.lgservice.com
WARNINGS AND PRECAUTIONS FOR SAFETY ................................................................................................................ 3
SPECIFICATIONS................................................................................................................................................................... 4
PARTS IDENTIFICATION ....................................................................................................................................................... 9
HOW TO INSTALL THE REFRIGERATOR .......................................................................................................................... 14
HOW TO ADJUST DOOR HEIGHT.................................................................................................................................... 14
FILTER ............................................................................................................................................................................... 15
HOW TO CONTROL THE ICEMAKER WATER SUPPLY.................................................................................................. 16
MICOM FUNCTION .............................................................................................................................................................. 18
EXPLANATION OF MICOM CIRCUIT .................................................................................................................................. 32
EXPLANATION OF PWB CIRCUIT.....................................................................................................................................32
PWB PARTS DIAGRAM AND LIST.....................................................................................................................................47
PWB CIRCUIT DIAGRAM ...................................................................................................................................................54
OPERATION PRINCIPLE AND REPAIR METHOD OF ICEMAKER ................................................................................... 56
OPERATION PRINCIPLE................................................................................................................................................... 56
CONTROL METHOD ACCORDING TO FUNCTIONS....................................................................................................... 57
DEFECT DIAGNOSIS FUNCTION..................................................................................................................................... 59
CIRCUIT................................................................................................................................................................................ 60
TROUBLE DIAGNOSIS........................................................................................................................................................ 63
TROUBLESHOOTING ....................................................................................................................................................... 63
FAULTS .............................................................................................................................................................................. 73
COOLING CYCLE HEAVY REPAIR................................................................................................................................... 90
HOW TO DEAL WITH CLAIMS.......................................................................................................................................... 97
HOW TO DISASSEMBLE AND ASSEMBLE..................................................................................................................... 103
DOOR............................................................................................................................................................................... 103
HANDLE ........................................................................................................................................................................... 104
FAN SHROUD GRILLE .................................................................................................................................................... 105
ICEMAKER ASSEMBLY................................................................................................................................................... 105
DISPENSER..................................................................................................................................................................... 106
TV-RADIO ............................................................................................................................................................................107
EXPLODED VIEW............................................................................................................................................................... 113
REPLACEMENT PARTS LIST ........................................................................................................................................... 131
CONTENTS
- 2 -
Please observe the following safety precautions to use therefrigerator safely and correctly and to prevent accident orinjury when servicing.
1. Be careful of an electric shock. Disconnect power cordfrom wall outlet and wait for more than three minutesbefore replacing PWB parts. Disconnect the powerwhenever replacing and repairing electric components.
2. If disconnecting the power, wait at least 5 minutesbefore plugging the unit back in.
3. Before touching the power cord, make sure the cord isnot damaged. If the power cord is damaged, it cancause a fire or an electrical shock.
4. Make sure the unit has a dedicated circuit breaker.Overloading the circuit can cause a fire.
5. Please make sure the outlet is properly grounded.Particularly in a wet or damp area.
6. Use standard electrical components.
7. Remove dust and foreign materials from the housingand connecting parts.
8. Do not fray, damage, run over, kink, bend, pull out, ortwist the power cord.
9. Please check for evidence of moisture intrusion in theelectrical components. Replace the parts or mask withinsulation tape if moisture intrusion is confirmed.
10. Stay clear of the icemaker with hands or tools if the unithas power. Do not try to manually turn the ice makereven when turned off.
11. Customers should not repair the refrigeratorthemselves. This work requires special tools andknowledge. Non-professionals could cause fire, injury,or damage to the product.
12. Do not store flammable materials such as ether,benzene, alcohol, chemicals, or gas in the refrigerator.
13. Do not put anything on top of the refrigerator,especially something containing water, like a vase.
14. Do not put glass bottles of water into the freezer. Thecontents will freeze and break the bottles.
15. If you scrap or discard the refrigerator, remove thedoors and dispose of it where children are not likely toplay in or around it.
WARNINGS AND PRECAUTIONS FOR SAFETY
- 3 -
SPECIFICATIONS
- 4 -
ITEMS SPECIFICATIONS
DIMENSIONS 908 X 896 X 1771 mm
W X D X H (3511/16X355/16X6911/16 in.)
NET WEIGHT 149 kg (328.5 lbs.)
COOLING SYSTEM Fan Cooling
TEMPERATURE CONTROL Micom Control
DEFROSTING SYSTEM Full Automatic
Heater Defrost
INSULATION Cyclo-Pentane
COMPRESSOR PTC Starting Type
EVAPORATOR Fin Tube Type
CONDENSER Wire Condenser
REFRIGERANT R134a (185g) (61/2 oz.)
LUBRICATING OIL FREOL @10G (320 cc)
ITEMS SPECIFICATIONS
DRIER MOLECULAR SIEVE XH-7
CAPILLARY TUBE ID Ø0.83
FIRST DEFROST 4 - 5 Hours
DEFROST CYCLE 13 - 15 Hours
DEFROSTING DEVICE Heater, Sheath
ANTI-SWEAT HEATER Dispenser Duct Door Heater
Dispenser Heater
ANTI-FREEZING HEATER Water Tank Heater
Damper Heater
FREEZER LAMP 40W (2 EA)
REFRIGERATOR LAMP 40W (4 EA)
DISPENSER LAMP 15W (1 EA)
724
mm
(28
1 /2
in.)
1004 mm (391/2 in.)
908 mm (353/4 in.)
779
mm
(30
5 /8
in.)
829
mm
(32
5 /8
in.)
897
mm
(35
5 /16
in.)
1261
mm
(49
5 /8
in.)
1741
.5 m
m (
681 /
2 in
.)
1746
.5 m
m (
683 /
4 in
.)
1771
mm
(69
11/ 1
6 in
.)
1771
mm
(69
11/ 1
6 in
.)
Front View Top View
Ref No. : LRSC26944**
SPECIFICATIONS
- 5 -
724
mm
(28
1 /2
in.)
1004 mm (391/2 in.)
908 mm (353/4 in.)
779
mm
(30
5 /8
in.)
829
mm
(32
5 /8
in.)
897
mm
(35
5 /16
in.)
1261
mm
(49
5 /8
in.)
1741
.5 m
m (
681 /
2 in
.)
1746
.5 m
m (
683 /
4 in
.)
1771
mm
(69
11/ 1
6 in
.)
1771
mm
(69
11/ 1
6 in
.)
Ref No. : LRSC26930**
ITEMS SPECIFICATIONS
DIMENSIONS 908 X 896 X 1771 mm
W X D X H (3511/16X355/16X6911/16 in.)
NET WEIGHT 149 kg (328.5 lbs.)
COOLING SYSTEM Fan Cooling
TEMPERATURE CONTROL Micom Control
DEFROSTING SYSTEM Full Automatic
Heater Defrost
INSULATION Cyclo-Pentane
COMPRESSOR PTC Starting Type
EVAPORATOR Fin Tube Type
CONDENSER Wire Condenser
REFRIGERANT R134a (185g) (61/2 oz.)
LUBRICATING OIL FREOL @10G (320 cc)
ITEMS SPECIFICATIONS
DRIER MOLECULAR SIEVE XH-7
CAPILLARY TUBE ID Ø0.83
FIRST DEFROST 4 - 5 Hours
DEFROST CYCLE 13 - 15 Hours
DEFROSTING DEVICE Heater, Sheath
ANTI-SWEAT HEATER Dispenser Duct Door Heater
Dispenser Heater
ANTI-FREEZING HEATER Water Tank Heater
Damper Heater
FREEZER LAMP 40W (1 EA)
REFRIGERATOR LAMP 40W (4 EA)
DISPENSER LAMP 15W (1 EA)
Front View Top View
SPECIFICATIONS
- 6 -
ITEMS SPECIFICATIONS
DIMENSIONS 908 X 896 X 1771 mm
W X D X H (3511/16X355/16X6911/16 in.)
NET WEIGHT 149 kg (328.5 lbs.)
COOLING SYSTEM Fan Cooling
TEMPERATURE CONTROL Micom Control
DEFROSTING SYSTEM Full Automatic
Heater Defrost
INSULATION Cyclo-Pentane
COMPRESSOR PTC Starting Type
EVAPORATOR Fin Tube Type
CONDENSER Wire Condenser
REFRIGERANT R134a (185g) (61/2 oz.)
LUBRICATING OIL FREOL @10G (320 cc)
ITEMS SPECIFICATIONS
DRIER MOLECULAR SIEVE XH-7
CAPILLARY TUBE ID Ø0.83
FIRST DEFROST 4 - 5 Hours
DEFROST CYCLE 13 - 15 Hours
DEFROSTING DEVICE Heater, Sheath
ANTI-SWEAT HEATER Dispenser Duct Door Heater
Dispenser Heater
ANTI-FREEZING HEATER Water Tank Heater
Damper Heater
FREEZER LAMP 40W (1 EA)
REFRIGERATOR LAMP 40W (4 EA)
DISPENSER LAMP 15W (1 EA)
724
mm
(28
1 /2
in.)
1004 mm (391/2 in.)
908 mm (353/4 in.)
779
mm
(30
5 /8
in.)
829
mm
(32
5 /8
in.)
897
mm
(35
5 /16
in.)
1261
mm
(49
5 /8
in.)
1741
.5 m
m (
681 /
2 in
.)
1746
.5 m
m (
683 /
4 in
.)
1771
mm
(69
11/ 1
6 in
.)
1771
mm
(69
11/ 1
6 in
.)
Ref No. : LRSC26920**, LRSC26922**
Front View Top View
SPECIFICATIONS
- 7 -
ITEMS SPECIFICATIONS
DIMENSIONS 908 X 896 X 1771 mm
W X D X H (3511/16X355/16X6911/16 in.)
NET WEIGHT 149 kg (328.5 lbs.)
COOLING SYSTEM Fan Cooling
TEMPERATURE CONTROL Micom Control
DEFROSTING SYSTEM Full Automatic
Heater Defrost
INSULATION Cyclo-Pentane
COMPRESSOR PTC Starting Type
EVAPORATOR Fin Tube Type
CONDENSER Wire Condenser
REFRIGERANT R134a (185g) (61/2 oz.)
LUBRICATING OIL FREOL @10G (320 cc)
ITEMS SPECIFICATIONS
DRIER MOLECULAR SIEVE XH-7
CAPILLARY TUBE ID Ø0.83
FIRST DEFROST 4 - 5 Hours
DEFROST CYCLE 13 - 15 Hours
DEFROSTING DEVICE Heater, Sheath
ANTI-SWEAT HEATER Dispenser Duct Door Heater
Dispenser Heater
ANTI-FREEZING HEATER Water Tank Heater
Damper Heater
FREEZER LAMP 40W (1 EA)
REFRIGERATOR LAMP 40W (3 EA)
DISPENSER LAMP 15W (1 EA)
724
mm
(28
1 /2
in.)
1004 mm (391/2 in.)
908 mm (353/4 in.)
779
mm
(30
5 /8
in.)
829
mm
(32
5 /8
in.)
892
mm
(35
1 /8
in.)
1261
mm
(49
5 /8
in.)
1741
.5 m
m (
681 /
2 in
.)
1746
.5 m
m (
683 /
4 in
.)
1771
mm
(69
11/ 1
6 in
.)
1771
mm
(69
11/ 1
6 in
.)
Front View Top View
Ref No. : LRSC26910**, LRSC26911**
SPECIFICATIONS
- 8 -
ITEMS SPECIFICATIONS
DIMENSIONS 908 X 896 X 1771 mm
W X D X H (3511/16X355/16X6911/16 in.)
NET WEIGHT 154 kg (339.5 lbs.)
COOLING SYSTEM Fan Cooling
TEMPERATURE CONTROL Micom Control
DEFROSTING SYSTEM Full Automatic
Heater Defrost
INSULATION Cyclo-Pentane
COMPRESSOR PTC Starting Type
EVAPORATOR Fin Tube Type
CONDENSER Wire Condenser
REFRIGERANT R134a (185g) (61/2 oz.)
LUBRICATING OIL FREOL @10G (320 cc)
ITEMS SPECIFICATIONS
DRIER MOLECULAR SIEVE XH-7
CAPILLARY TUBE ID Ø0.83
FIRST DEFROST 4 - 5 Hours
DEFROST CYCLE 13 - 15 Hours
DEFROSTING DEVICE Heater, Sheath
ANTI-SWEAT HEATER Dispenser Duct Door Heater
Dispenser Heater
ANTI-FREEZING HEATER Water Tank Heater
Damper Heater
FREEZER LAMP 40W (2 EA)
REFRIGERATOR LAMP 40W (4 EA)
DISPENSER LAMP 15W (1 EA)
724
mm
(28
1 /2
in.)
1004 mm (391/2 in.)
908 mm (353/4 in.)
779
mm
(30
5 /8
in.)
829
mm
(32
5 /8
in.)
897
mm
(35
5 /16
in.)
1261
mm
(49
5 /8
in.)
1741
.5 m
m (
681 /
2 in
.)
1746
.5 m
m (
683 /
4 in
.)
1771
mm
(69
11/ 1
6 in
.)
1771
mm
(69
11/ 1
6 in
.)
Front View Top View
Ref No. : LRSC26980TT
PARTS IDENTIFICATION
- 9 -
Humidity SwitchOptiChill Display
Lamp
Shelf
Egg Box
Snack Drawer
Vegetable Drawer
OptiChill
Door Rack
Shelf
Grab and Go
Can Server
Lamp
Lower Cover
Dairy Products Corner
Water Filter
Door Rack
Drawer(Wire/Plastic)
Freezer Compartment
Refrigerator Compartment
AutomaticIcemaker
Door Rack
Shelf
Door Rack
Bottle Guide
Display Panel
Dispenser Lamp
Ice & WaterDispenser Button
PCB Cover
Water Tubes
Ref No. : LRSC26944**
Ref No. : LRSC26930**
PARTS IDENTIFICATION
- 10 -
Humidity Switch
Lamp
Shelf
Egg Box
Snack Drawer
Vegetable Drawer
OptiChill
Door Rack
Shelf
Grab and Go
Wine Holder
Lamp
Lower Cover
Dairy Products Corner
Door Rack
Drawer(Wire/Plastic)
Freezer Compartment
Refrigerator Compartment
AutomaticIcemaker
Door Rack
Shelf
Bottle Guide
Display Panel
Dispenser Lamp
Ice & WaterDispenser Button
OptiChill Display
Door Rack
Water Filter
PCB Cover
Water Tubes
PARTS IDENTIFICATION
- 11 -
Humidity Switch
Lamp
Shelf
Egg Box
Snack Drawer
Vegetable Drawer
Vegetable Drawer/Meat Drawer
Door Rack
Shelf
Door Rack
Wine Holder
Lamp
Lower Cover
Dairy Products Corner
Door Rack
Drawer(Wire/Plastic)
Freezer Compartment
Refrigerator Compartment
AutomaticIcemaker
Door Rack
Shelf
Bottle Guide
Display Panel
Dispenser Lamp
Ice & WaterDispenser Button
PCB Cover
Water Tubes
Door Rack
Water Filter
Ref No. : LRSC26920**, LRSC26922**
Ref No. : LRSC26910**, LRSC26911**
PARTS IDENTIFICATION
- 12 -
Lamp
Shelf
Egg Box
Snack Drawer
Vegetable Drawer
Vegetable Drawer/Meat Drawer
Door Rack
Shelf
Door Rack
Wine Holder
Lamp
Lower Cover
Dairy Products Corner
Door Rack
Drawer(Wire/Plastic)
Freezer Compartment
Refrigerator Compartment
AutomaticIcemaker
Door Rack
Shelf
PCB Cover
Water Tubes
Door Rack
Water Filter
Humidity Switch
Bottle Guide
Display Panel
Dispenser Lamp
Ice & WaterDispenser Button
PARTS IDENTIFICATION
- 13 -
Humidity SwitchOptiChill Display
Lamp
Shelf
Egg Box
Snack Drawer
Vegetable Drawer
OptiChill
Door Rack
Shelf
Grab and Go
Can Server
Lamp
Lower Cover
Dairy Products Corner
Water Filter
Door Rack
Drawer(Wire/Plastic)
Freezer Compartment
Refrigerator Compartment
AutomaticIcemaker
Door Rack
Shelf
Door Rack Bottle Guide
Display Panel
Dispenser Lamp
Ice & WaterDispenser Button
PCB Cover
Water Tubes
Ref No. : LRSC26980TT
How to Adjust Door Height of Refrigerator Level the refrigerator first. (If the refrigerator is not installed on a flat floor, the height of freezer and refrigerator doors
may not be the same.)
If the freezer door is lower than the refrigerator door: If the freezer door is higher than the refrigerator door:
Insert a driver into the groove of the adjustingscrew and turn in the direction of the arrow (clockwise)until the refrigerator is level.
Insert a driver into the groove of the adjustingscrew and turn in the direction of the arrow (clockwise)until the refrigerator is level.
HOW TO INSTALL REFRIGERATOR
- 14 -
AdjustingScrew
Driver
HeightDifference
HeightDifference
HeightDifference
HeightDifference
1
2
FilterReplace the filter when the indicator light comes on or theperformance of the icemaker or water dispenser decreasesnoticeably.
After changing the water filter cartridge, reset the waterfilter status display and indicator light by pressing andholding the BUTTON for 3 seconds.(page 18)
1. Remove the old cartridge.Twist the knob of the cartridge counter clockwise.
When the cartridge is removed, you will feel it click .
Pull out the cartridge.
NOTE: There will be some water(25cc) in the filtercartridge. Some spilling may occur. Catch it in abowl or towel.
2. Replace with a new cartridge.Take the new cartridge out of its packaging and remove theprotective cover from the o-rings.
With the cartridge knob in the vertical position, push thenew filter cartridge into the cover until it stops.
If you can’t turn the filter from side to side, it isn’t fullyinserted. Push it in firmly and twist it into place. You willhear the snap when it clicks into place.
Using the handle, twist the cartridge clockwise about 1/4turn.
3. After replacing filter, dispense water through the waterdispenser for 3 minutes to purge the system.There may be a little air in the line, causing noise orhissing. Run the water at the dispenser until the hissingstops.
NOTE: - To purchase replacement water filter cartridges,visit your local appliance dealer or part distributor,or call 1-877-714-7486.
- You can also visit our website :www.lgappliances.com
HOW TO INSTALL REFRIGERATOR
- 15 -
Ice Maker
1) How to Control the Amount of Water Supplied to Icemaker.Caution : • Do not put hands or tools into the chute to confirm the operation of geared motor.
It may damage the refrigerator or hurt your hands.
To gain access to the ice maker, remove the ice bin in the upper part of the freezer compartment. Then use the watercontrol switch to change the amount of water supplied to the ice maker.
Water supply amount TABLE
HOW TO INSTALL REFRIGERATOR
- 16 -
21
STAGE TIME TO SUPPLY INDICATIONS REMARKS
1
2
3
4
5
4 sec.
4.5 sec.
5 sec.
5.5 sec.
6 sec.
The water amount will vary depending
on the Water Control Switch setting as
well as the water pressure of the
connected water line.
ww WARNING Personal Injury Hazard Avoid contact with the moving parts of the ejectormechanism or with the heating element that releasesthe cubes. DO NOT place fingers or hands on theautomatic icemaking mechanism while the refrigeratoris plugged in.
2) Operating instructionsA newly-installed refrigerator may take up to 24 hoursto begin making ice.
The icemaker will produce eight cubes percycle—approximately 120–150 cubes in a 24-hour period,depending on freezer compartment temperature, roomtemperature, number of door openings and other operatingconditions.
If the refrigerator is used before the water connection ismade to the icemaker, set the power switch to O (off).
When the refrigerator has been connected to the watersupply, set the power switch to I (on).
The icemaker will fill with water when it cools to freezing. Anewly-installed refrigerator may take up to 24 hours tobegin making ice cubes.
Throw away the first few batches of ice to allow the waterline to clear.
Be sure nothing interferes with the sweep of the feeler arm.
When the bin fills to the level of the feeler arm, theicemaker will stop producing ice.
It is normal for several cubes to be stuck together.
If ice is not used frequently, old ice cubes will becomecloudy, taste stale, and shrink.
NOTE: If the cube size is smaller or larger than youexpected, you can regulate the size with the cube sizebutton. (normally caused by variations in water pressure.)
Every time you press the cube size button, the indicatorlight goes up. The higher the position indicated, the largerthe cubes will be. (1st step is the next after the 5th step.)
3) When you should set the icemaker powerswitch to O (off)
• When the water supply will be shut off for several hours.
• When the ice storage bin is removed for more than aminute or two.
• When the refrigerator will not be used for several days.
4) Normal sounds you may hear• The icemaker water valve will buzz as the icemaker fills
with water. If the power switch is in the I (on) position, itwill buzz even if it has not yet been hooked up to water.To stop the buzzing, move the power switch to O (off).
NOTE: Keeping the power switch in the I (on) positionbefore the water line is connected can damage theicemaker.
• You will hear the sound of cubes dropping into the binand water running in the pipes as the icemaker refills.
5) Preparing for VacationSet the icemaker power switch to O (off) and shut off thewater supply to the refrigerator.
If the ambient temperature will drop below freezing, have aqualified servicer drain the water supply system (on somemodels) to prevent serious property damage due toflooding from ruptured water lines or connections.
HOW TO INSTALL REFRIGERATOR
- 17 -
Feeler Arm
Icemaker
Cube SizeIndicator Light Water Supply
Control Switch
Power Switch
1. Monitor Panel
1-1. LRSC26944**, LRSC26980TT
1-2. LRSC26930**
1-3. LRSC26910**, LRSC26911**, LRSC26920**, LRSC26922**
MICOM FUNCTION
- 18 -
ICEBEAMCOOLING
OFF
CUBE FILTERMONTH
EXPRESS/JET FRZ DISPENSER FREEZER REFRIGERATOR FILTER/LIGHT LOOK
ROOM TEMP
DISPENSER & KEY
F
WATER 54321
CRUSH
F F
3 SECS
Dispenser selection button
Express Freezer/Jet Freezer function selection button
Dispenser and Button Lock button
Filter Timer Reset & Dispenser Light Toggle
Refrigerator Compartment Temperature Setting
Freezer Compartment Temperature Setting
EXPRESS DIGITAL CONTROL
FRZ TEMP REF TEMPJET
CUBE
FILTER RESETHOLD 3SECS
EXPRESS/JET FRZ DISPENSER FREEZER REFRIGERATOR FILTER RESET/LIGHT LOOK
ROOM TEMP
LOCK
DISPENSER & KEY
WATER
CRUSH3 SECS
FC
FC
FC
FILTER
ON DIGITAL CONTROL
FRZ TEMP REF TEMPOFF
CUBE
FILTER RESETHOLD 3SECS
EXPRESS FRZ DISPENSER FREEZER REFRIGERATOR FILTER RESET/LIGHT LOOK
ROOM TEMP
LOCK
DISPENSER & KEY
WATER
CRUSH3 SECS
FC
FC
FC
FILTER
2. Refrigerator Functions2-1-1. Temperature Selection (LRSC26944**, LRSC26980TT)
* The temperature can vary ±3 °C depending on the load condition.
Whenever pressing the button, setting is repeated in the order of (Medium) (Medium Cold) (Coldest) (Warmest) (Medium Warm).
• The actual inner temperature varies depending on the food status, as the indicated setting temperature is a targettemperature, not the actual temperature within the refrigerator.
• A newly installed refrigerator will take 24 hours minimum for temperatures to stabilize. The temperature should bechecked and adjusted as necessary after 2 or 3 days.
2-1-2. LCD Back Light Control (LRSC26944**, LRSC26980TT)
1. In order to see the LCD display more easily, the backlight is turned on for one minute at the initial application of power, for20 seconds when buttons are pressed, when a door is opened, and for 20 seconds after the door is closed.
2. When any display button is pressed while the backlight is off, the bell sounds and the backlight is turned on, but thebutton function is not performed. In other words, pressing any button turns on the backlight but does not cause anyfunction to be initiated.
3. To check the LCD graphic and back light ON/OFF status, press and hold the EXPRESS/JET FRZ and FREEZER buttons.This will turn the back light on and illuminate all of the graphics. When the buttons are released, the graphic displayreturns to its previous setting and the back light is turned off.
2-1-3. Room temperature display function
1. The sensor for the ROOM TEMP display is located under the upper right hinge cover. Factors such as air flow, lighting,and other appliances operating within the room, may cause the display to differ from other temperature displays in thesame room.
2. Ambient temperature is displayed between 16°F and 120°F. Temperatures 15°F and below are displayed as Lo andtemperatures 121°F and above are displayed as Hi. If the ambient temperature sensor fails, Er will be displayed.
MICOM FUNCTION
- 19 -
Division Power Initially On 1st Press 2st Press 3th Press 4th Press
Setting temperature
Temperature Control
Medium Medium Cold Coldest Warmest Medium Warm
Freezer Control -2 °F -5 °F -8 °F 7 °F 4 °F
Refrigeration 37 °F 34 °F 32 °F 46 °F 41 °F
Control
54321
54321
54321
54321
54321
2-1-4. Lock function (dispenser and display button lock)
1. When the refrigerator is first powered up, the Lock function is turned off.
2. To lock the display, the dispenser, and the control panel, press and hold the LOCK button for more than 3 seconds. TheLOCK text on the display will be turned on.
3. To unlock the controls, press and hold the lock button for more than 3 seconds. The LOCK text on the display will beturned off.
2-1-5. Filter condition display function
LCD (LRSC26944**, LRSC26980TT)
1. This units displays the months left before the water filter needs to be changed. It starts when the unit is first plugged in.
2. After 6 months have passed the filter change will appear on the display. It will show FILTER LIGHT 3 SECS.
3. Press and hold the filter button for 3 seconds to reset the filter timer.
LED (All models except LRSC26944**, LRSC26980TT)
1. There is a replacement indicator light for the water filter cartridge on the dispenser.
2. The water filter should be replaced every six months or about 28,000 seconds' filtering time.
3. The water filter light and FILTER RESET HOLD 3 SECS will show in the display to remind you to change the filter soon.
4. After replacing the filter, press and hold the lock button for more than 3 seconds. The FILTER RESET HOLD 3 SECS willturn off.
MICOM FUNCTION
- 20 -
DISPENSER & KEY
3 SECSLOCK
DISPENSER & KEY
3 SECS
LOCK CONTROL
DISPENSER & KEY
3 SECSLOCK
DISPENSER & KEY
3 SECS
LOCK CONTROL
Ex) SelectLOCK
Ex) SelectLOCK again
Ex) SelectLOCK
Ex) SelectLOCK again
In initialPower OnClassification
Filter StatusDisplay
Pass ofa month
Pass of2 months
Pass of3 months
Pass of4 months
Pass of5 months
Pass of6 months
3 SECS
FILTERMONTH
FILTERMONTH
FILTERMONTH
FILTERMONTH
FILTERMONTH
FILTERMONTH
FILTERMONTH
FILTER LIGHT
In initial Power On / Filter RESET
Replace indicator light onClassification
Filter StatusDisplay
FILTER
FILTER RESETHOLD 3SECS
FILTER
LCD (LRSC26944**, LRSC26980TT) LED (All models except LRSC26944**, LRSC26980TT)
3 SECSFILTER LIGHT
2-2. Dispenser use selectionYou can select water or ice.
Select water, crushed ice, or ice cubes by cycling through the selections whenpressing the DISPENSER button.
Hold your cup in the dispenser for a few seconds after dispensing ice or water toallow the last pieces of ice or drops of water to fall into the cup.
2-3. Express freezing/JET freezing selectionPlease select this function for prompt freezing.
• The functions are cycled in the order shown below when the EXPRESS/JET FRZ button is pressed.
• The arrow mark graphic remains at the On status after flickering 4 times when selecting Special Refrigeration EXPRESSFRZ or JET FRZ.
• EXPRESS FREEZE and JET FREEZE operate for a set time and then default to normal freezer operation.
2-4. Dispenser Light• Dispenser switch or dispenser light button turns the dispenser light in the dispenser on and off.
• The dispenser light turns off automatically after 7 minutes.
MICOM FUNCTION
- 21 -
DISPENSER
LCD LED
CUBE
WATER
CRUSH
CUBE
WATER
CRUSH
PressingSwitch
LCD (LRSC26944**, LRSC26980TT)
LED (LRSC26930**)
LED (LRSC26910**, LRSC26911**, LRSC26920**, LRSC26922**)
EXPRESS/JET FRZ
OFF
EXPRESS FRZ
JET FRZ
EXPRESS/JET FRZ EXPRESS
JET
EXPRESS FRZ ON
OFF
Dispenser Iight OFFLCD
Dispenser Iight ONLCD
Dispenser Iight ON/OFFLED
CN
2-5. Express freezing1. EXPRESS FREEZING improves the cooling speed of the freezer by running the compressor and the freezer fan.
2. In the event of power failure, EXPRESS FREEZING is cancelled and the freezer defaults to normal operation.
3. The temperature setting is not changed when EXPRESS FREEZING is selected.
4. The freezer compartment and refrigerator temperature settings can be changed even when EXPRESS FREEZING isselected and the cycle is underway.
5. The refrigerator compartment will operate at its usual setting even when EXPRESS FREEZING is selected or in progress.
6. If you select EXPRESS FREEZING, the refrigerator will default to its original setting at the end of the cycle.
7. If the defrost cycle is scheduled to come on while EXPRESS FREEZING is selected, EXPRESS FREEZING will operateonly for the time that is not used by the defrost setting.
8. If you press EXPRESS FREEZING during the defrost cycle, the EXPRESS FREEZING indicator will turn on but the cyclewill not run until the defrost cycle is completed.
9. If you press EXPRESS FREEZING within 7 minutes of the compressor’s last run cycle, the EXPRESS FREEZING cyclewill not begin until the 7 minute delay is complete.
10. The freezer fan runs at high speed when Express Freezing is selected.
2-6. Jet Freezing1. Jet Freezing improves the cooling speed of the Jet Freezing Compartment by running the compressor and the Jet
Freezing Compartment fan.
2. If there is a power failure, the Jet Freezing cycle is released and the freezer defaults to its original setting.
3. If Jet Freezing is selected, the compressor (after the compressor delay time has passed) and the freezer fan will beturned on. The temperature in the freezer will drop and the fan motor will be turned off for a set time, but the Jet Freezingfan will run for no more than two hours. After that, the Jet Freezing function is terminated and the freezer defaults to itsoriginal setting.
4. To keep the fan motor from freezing, it is switched on for 10 seconds once an hour.
5. The fan motor of jet freezing box will not be detected as a failure. (dc 12v operation)
6. When checking the Jet Freezing function, the Jet Freezing Compartment fan motor is switched on for 1 minute if thefreezer adjustment button or the Express Freeze button is pressed for more than one second.
MICOM FUNCTION
- 22 -
2-7. OptiChill Function
uu LRSC26944**, LRSC26980TT 2-7-1. OptiChill Temperature Control
1. The Optichill is positioned at the bottom of the refrigerator compartment. It allows the user to select a more specifictemperature based on the foods being stored, such as meat, fish, fruits and vegetables, etc.
2. The Optichill system consists of a sensor at the rear of the drawer, a damper, a fan motor between the Optichillcompartment and the freezer, a heater at the bottom of the Optichill compartment, and a temperature adjustment displayat the top.
3. The initial setting of the Optichill will be FRUIT VEGE.
4. Each time you press the SELECT button, the selection cycles through the settings in the order of FRUIT VEGE(39°F)CHILLED ROOM (30°F)PARTIAL FREEZING (27°F)WINE(50°F)FRUIT VEGE (39°F). The display will showthe target temperature. If EXPRESS CHILL or THAW is selected, the selected temperature and NOTCH LED are notshown, and the temperature can be adjusted.
5. The Optichill sensor detects the temperature and relays this information to the MICOM. Based on the temperature andsetting, The damper is opened or closed and the heater is on or off, as the conditions warrant.
6. If the Optichill damper hasn’t moved within an hour, it is automatically opened or closed and then returned to its previoussetting to keep it from freezing in one position.
7. In Display Check mode, the Optichill fan motor is turned on for one minute. To enter the Display Check mode, press andhold both the Freezer Adjust button and the Express Freezing button for three seconds.
8. If the Optichill fan motor hasn’t run within an hour, it is automatically run for ten seconds once every hour to keep it fromfreezing in one position.
MICOM FUNCTION
- 23 -
°F / SET TEMP
/ TIME REMAININGMINWINE3.0 1.5 0.5
EXPRESSCHILL
THAW(lbs)
FRUITVEGE
CHILEDROOM
PARTIALFREEZING
SELECT SELECT
HR
Display 27°F 30°F 39°F 50°F
NOTCHPartial
FreezingChilledRoom
FruitVEGE
Wine
12Hr 8Hr 4Hr 90Min 50°F
3.0lbs 1.5lbs
THAW
0.5lbs
ExpressChill
Function
2-7-2. OptiChill Thawing & Express Chill Control
1. When you press the SELECT button on the right, the THAW LED will light. The time for the selected function will beshown. You can cycle through the options in this order: EXPRESS CHILL/THAW OFFEXPRESS CHILL (90 Min.)THAW 0.5 lbs. (4 hours)THAW 1.5 lbs. (8 hours)THAW 3.5 lbs. (12 hours)EXPRESS CHILL/THAW OFF. If EXPRESS CHILL/THAW is selected, the NOTCH temperature in the Optichill will not be displayed.
2. If EXPRESS Chill is selected, the Optichill damper is opened and the fan motor is turned on. If the Optichill does notreach the set temperature after no more than ninety minutes, the setting is released.
3. The Optichill will count down from 90 minutes and show the remaining time in minutes.
4. When the EXPRESS CHILL cycle ends (or is released), the setting defaults to FRUIT VEGE (39°F).
5. If THAW is selected, the Optichill damper is closed and the time and temperature will be set according to the thawingfunction selected. The thawing function will be automatically terminated at the end of the set time.
6. When in THAW mode, the sensor controls the heater to keep the set temperature.
7. When in THAW mode, the display counts down the remaining time in minutes.
8. When the THAW mode is released, the Optichill automatically defaults to CHILLED ROOM (30°F).
uu LRSC26930**2-7-3. OptiChill Temperature Control
1. The Optichill is in the bottom of the refrigerator compartment and allows the user to select and adjust the temperaturebased on the type food stored there. Selections include meat, fish, fruits and vegetables, etc. Storing foods at the propertemperature allows them to be stored for longer periods.
2. The Optichill consists of a temperature sensor, a damper between the Optichill and the freezer, and a temperaturecontrol/display at the top.
3. At initial power-up, the Optichill defaults to FRUIT VEGE. If the refrigerator door is opened, the Optichill LED will be on.
4. When you press the SELECT button on the left, the LED will light and indicate the setting. The time for the selectedfunction will be shown. You can cycle through the options in this order: FRUIT VEGE (39°F)CHILLED ROOMPARTIALFREEZINGFRUIT VEGE. The display will indicate the temperature for the selected setting.
5. The Optichill sensor detects the temperature and relays that information to the MICOM. When the set temperature isreached, the Optichill damper is closed. If the temperature rises, the damper is opened to allow the temperature to fallagain.
6. If the Optichill damper hasn’t moved within an hour, it is automatically moved and returned to its original setting onceevery hour to keep it from freezing in one position.
MICOM FUNCTION
- 24 -
2-8. Variable freezing fan1. To increase the cooling speed and load response speed, the MICOM will switches the freezer compartment fan motor
between high and regular speeds.
2. The MICOM runs the freezer fan at high speed only at initial power-up, Express Freezing operation, or in response to ahigh load. The fan runs at the regular speed in all other circumstances.
3. When you open the refrigerator door while the fan is running at high speed, the MICOM will switch the fan to regularspeed. If you open the freezer door or the home bar door, the fan is switched off.
4. If the MICOM determines the fan is obstructed (the blade cannot turn) it switches the fan off. When there is no fan rotationsignal for 115 seconds, the MICOM displays an error on the display. To restart the fan, clear the obstruction and turn thepower off and back on.
2-9. Cooling fan motor1. The cooling fan is switched ON and OFF in conjunction with the compressor.
2. The cooling fan runs at a single speed.
3. The Failure sensing method is the same as in the fan motor of the freezing fan motor (refer to failure diagnosis functiontable for failure display).
2-10. Door alarm1. If the doors are left open for more than one minute, the buzzer sounds three 1/2-second tones at thirty second intervals for
four times.
2. If all the doors of freezing/cold storage room or home bar are closed during door open alarm, alarm is immediately turnsoff.
2-11. Button selection buzzer bell1. The DING sounds if you press any button on the front display.
MICOM FUNCTION
- 25 -
Doors of freezing / cold storage room
or home bar
BUZZER
Closing Opening
Withina minute
A minute 30seconds
30seconds
30seconds
OpeningClosing Closing
3 Times 3 Times 3 Times 3 Times
2-12. Automatic Defrost Signal1. The beep will sound if you press the test button on the main PCB.
2. The regular cycle sounds three short beeps one second apart.
3. When you select the automatic defrost cycle, the alarm sounds three series of three short beeps one minute apart.
2-13. Defrost Function1. Automatic defrost is performed whenever the compressor run time totals 71/2 hours.
2. At initial power-up, the defrost cycle will run when the total compressor runtime is 41/2 hours.
3. Defrost is completed when the defrost sensor temperature rises above 41°F (5°C) during the defrost cycle. The defrostcycle will terminate if the defrost sensor temperature does not achieve 41°F (5°C) within two hours.
4. The defrost cycle will not operate if the defrost sensor fails.
2-14. Refrigerator compartment lamp automatically off1. The refrigerator light is turned ON and OFF by the refrigerator door switch.
2. If the refrigerator light is on for more than 7 minutes, it will be turned off automatically. It will operate normally if you closethe door and re-open it.
MICOM FUNCTION
- 26 -
2-15. Sequential operation of componentsElectromechanical parts of the appliance, such as the compressor, defrost heater, freezer fan, cooling fan, and dampermotor, are operated sequentially as shown in the chart below to prevent noise and circuit overload from everything startingat once.
MICOM FUNCTION
- 27 -
Function Load Operation Sequence Remark
Inapplying
Initialpower
TE
ST
MO
DE
When temperatureof a defrost sensorbecomes morethan 45°C (initial setup,movement)
If error occursduring operation,initial operation isnot done.
Sequence of loadoperation whenclosing freezerand refrigerator.
The refrigeratorwill return tonormal operationif you press thetest switch onceagain while inTest Mode 2 or ifthe temperatureof the defrostsensor surpasses41°F (5°C). Thecompressor willrun after the 7-minute delay.
Whentemperature of adefrost sensorbecomes lessthan 45°C (power failure,service)
Test mode 1 (Compulsoryfunction)
Test mode 2 (Compulsorydefrost)
POWER
ON
COMP
ON
F-FAN&
C-FANON
R-STEPMOTOR
DAMPERON
OPTICHILLSTEP
DAMPERMOTOR
ON
DEFROSTHEATER
OFF
DEFROSTHEATER
ON
DAMPER&
DUCT DOOR& OPTICHILLHEATER ON
DAMPER&
DUCT DOOR& OPTICHILLHEATER OFF
0.3sec.
6.0sec.
0.3sec.
0.3sec.
0.3sec.
POWER
ON
0.3sec.
PIPE&
DISP'HEATER
OFF
0.3sec. COMP
ON
0.3sec. F-FAN
&C-FAN
ON
0.3sec. R-STEP
MOTORDAMPER
ON
0.3sec.
OPTICHILLSTEP
DAMPERMOTOR
ON
PIPE&
DISP'HEATER
ON
TESTSWITCH(PRESSOnce)
OTHERLOAD
OFF
COMP
ON
F-FAN&
C-FANON
R-STEPMOTOR
DAMPERON
OPTICHILLSTEP
DAMPERMOTORCLOSE
TESTSWITCH(PRESS2 Times)
COMP
OFF
F-FAN&
C-FANOFF
FROSTREMOVALHEATER
ON
R-STEPMOTOR
DAMPERCLOSE
0.3sec.
0.3sec.
0.3sec.
0.3sec.
0.3sec.
0.3sec.
0.3sec.
0.3sec.
0.3sec.
0.3sec.
0.3sec.
2-16. Failure Diagnosis 1. The failure diagnosis function indicates the area of a failure while the product is in operation.
2. When the appliance enters the failure mode, pressing buttons has no effect on the operation of the appliance.
3. If the error clears itself, the MICOM will reset and the appliance will operate as usual.
4. The failure code will be displayed as indicated in the drawings below. All other graphics and displays will be turned off.
MICOM FUNCTION
- 28 -
ICEBEAM
COOLING
OFF
CUBE FILTER
MONTH
ROOM TEMP
DISPENSER & KEY
F
WATER 5
4
3
2
1CRUSH
F F
3 SECS
EXPRESS(On)
DIGITAL CONTROL
FRZ TEMP REF TEMP(Off)JET
CUBE
FILTER RESETHOLD 3SECS ROOM TEMP
LOCK
DISPENSER & KEY
WATER
CRUSH3 SECS
F
CF
C
F
C
FILTER
C
E
A B D C
FAILURE CODE
INDICATION PART E
A B D
FAILURE CODE
INDICATION PART
LRSC26944**, LRSC26980TT All models except LRSC26944**, LRSC26980TT
All displays turn off other than freezer room notch temperature display and refrigerator room notch temperaturedisplay(failure code indication part) when indicating failure modes(except for Note1, Note2).
1
2
3
4
5
6
7
8
9
10
Er FS
Er rS
Normal display (Note 2)
Er dS
Er dH
Er FF
Er CF
Er CO
Normal display (Note 1)
Normal display(Note 2)
Failure code indication part
Freezer notchtemperature
display
Refrigerator notchtemperature
display
No. Item Contents of failure FreezingBLDC motorCompressor Stepping
motor damperDefrostHeater
CoolingBLDC motor
Product operation status in failure
Abnormalfreezer sensor
Abnormal refrigeratorsensor 1 (R1) (Upper part in therefrigeratorcompartment)
Abnormal refrigeratorsensor 2 (R2) (Middle part in therefrigeratorcompartment)
Abnormal defrostsensor
Failed defrosting
Abnormal freezingBLDC motor
Abnormal coolingBLDC motor
CommunicationErrors.
Abnormalambient sensor
Abnormal Optichill sensor
Freezer sensor short circuit
Refrigerator sensor1 short circuit
Refrigerator sensor2 short circuit
Abnormal short circuit
Defrost heater, temperature fuse shortcircuit, unplugged connector(indicated4 hour later after trouble)
Motor defect, hooked of lead wireto fan, contact of structures withfan, short or open of leadwire(there is no signal of BLDCmotor more than 115 seconds inoperation of fan motor)
Short or open of lead wireconnecting between main PCBand display PCB, transmission trand receiving part
Ambient sensor short circuit
Optichill sensor short circuit
StandardRPM
StandardRPM
StandardRPM
StandardRPM
StandardRPM
OFF
StandardRPM
StandardRPM
OFF
ON for 15minutes /OFF for 15minutes
No defrost
Full opening for10 minutes/
Full closing for15 minutes
: Proper operation
Note1) The freezer and refrigerator temperature displays are also used to display error codes. The exception is that whenthe ambient temperature sensor fails, it shows Er in the ambient temperature display. All other display elements willfunction normally.
Note2) The R2 sensor, Optichill sensor, and water tank sensor are not indicated in the error codes, but you can see theseerrors by entering the test mode by pressing and holding the Freezer Temperature and Express/Jet Freezer buttonssimultaneously.
R2-sensor (middle room)Normal: LED or LCD graphic on the (C) part turns on Abnormal: LED or LCD graphic on the (C) part turns off
Optichill sensorNormal: LED or LCD graphic on the (D) part turns onAbnormal: LED or LCD graphic on the (D) part turns off
Water tank sensorNormal: LEDs or LCDs graphic on the (E) part turns onAbnormal: LEDs or LCDs graphic on the (E) part turns off
LCD (LED) check function: LCD (LED) Press and hold the Express Freeze button and the Freezer Temperatureadjustment button to check the display. This will turn on the backlight and all display elements.Release the buttons and the display will return to its usual state.
MICOM FUNCTION
- 29 -
The other LED or LCD Graphics Turn On.
2-17. Test Function1. The test function is a self-diagnostic system designed to detect problems early and to make diagnosis and repair easier
and quicker.
2. The test button is on the main PCB. Test mode can run for up to 2 hours and will then default to the normal operationmode if not reset manually.
3. The function buttons are inoperable when the refrigerator is in test mode.
4. When you have finished using the test mode, reset the appliance manually by unplugging it for several seconds.
5. If nonconforming contents such as sensor failure are found during performance of test mode, release the test mode anddisplay the failure code.
6. The test button is inoperable if the display is showing failure codes. Reset the appliance manually to use the test button.
MICOM FUNCTION
- 30 -
Test 1
Test 2
NormalStatus
Mode Operation Contents Remarks
Press test button once(strong cold mode)
Press test button once atthe test mode 1 status(forced defrost mode)
Press test button once atthe test mode 2 status
1. Continuous operation of compressor2. Continuous operation of freezing BLDC motor
(high-speed RPM) and cooling BLDC motor3. Defrost heater turns off4. Stepping motor damper is completely opened
(baffle open)5. Optichill stepping motor damper is completely
closed.6. All display LEDs or LCD graphics turn on.
1. Compressor OFF2. Freezing BLDC motor and cooling BLDC
motor turn off3. Defrost heater turns on4. Stepping motor damper is completely closed
(baffle close)5. Optichill stepping motor damper is completely
closed.6. All display LEDs or LCD graphics turn off.
Except for (A), (B) LCD graphic.Except for (A): 22 (B): 22 LEDs.
Return to the initial status.
Freezer fan is off whendoor is open.
Return to the normal modewhen the defrost sensor isabove +5°C
Compressor will operateafter delay for 7 minutes
EXPRESS DIGITAL CONTROL
FRZ TEMP REF TEMPJET
CUBE
FILTER RESETHOLD 3SECS ROOM TEMP
LOCK
DISPENSER & KEY
WATER
CRUSH3 SECS
FC
FC
FC
FILTER
54321
ICEBEAMCOOLING
CUBE FILTERMONTH
ON
ROOM TEMP
DISPENSER & KEY
WATER 54321
CRUSH3 SECS
EXPRESS FRZ
FC
FC
LOCK
FC
JET
3 SECSFILTER LIGHT
TEST MODE1 STATUS DISPLAY
TEST MODE2 STATUS DISPLAY
2-18. Door-mounted Dispenser1. This feature allows dispensing of ice and water without having to open the refrigerator door.
2. Select CUBES, CRUSHED ICE, or WATER. Then press the dispenser switch. The duct door is operated by a solenoid.This door closes 5 seconds after ice is dispensed.
3. The dispenser does not work if the freezer door is open.
4. The dispenser will turn itself off after 3 minutes even if it does not receive an OFF signal. This prevents damage andoverheating of the motor. The duct door will close 5 seconds after ice is dispensed.
5. The dispenser lamp is turned on and off by the dispenser switch.
6. Selection of Cubes/Crushed/Water1) Select Cubes/Crushed/Water using the selection button2) The default at power-up is Crushed3) The geared motor operates when Cubes or Crushed is selected.
7. Water Dispenser Function1) Select Water using the selection button2) The water line must be connected to the household water supply. The solenoid at the bottom right rear of the
refrigerator operates to supply water. 3) Press the dispenser switch to dispense water.
MICOM FUNCTION
- 31 -
1. Circuit Descriptions
1-1. Power circuitLRSC269****The power circuit includes a Switched Mode Power Supply (SMPS). It consists of a rectifier (BD1 and CE1) converting ACto DC, a switch (IC2) switching the DC voltage, a transformer, and a feedback circuit (IC3 and IC4).
Caution : Since high voltage (160 Vdc) is maintained at the power terminal, wait at least 3 minutes after unplugging theappliance to allow the current to dissipate.
Voltage of every part is as follows:
EXPLANATION FOR MICOM CIRCUIT
- 32 -
Part VA1 CE1 CE2 CE3 CE4 CE5
Voltage 120 Vac 160 Vdc 14 Vdc 12 Vdc 15.5 Vdc 5 Vdc
1-2. Oscillation circuitThe oscillation circuit generates a basic clock signal for synchronization and time calculation related to the transmission ofdata and calculations made by the MICOM (IC1). The oscillator (OSC1) must always be replaced with an exact rated part,because if this spec is changes, the time calculations of the MICOM will be affected and it might not work at all.
1-3. Reset circuitThe RESET circuit allows various parts of the MICOM, such as RAM, defrosting, etc., to be restarted from the initial statewhen power is interrupted or restored. A LOW signal applied to the reset terminal for 10 ms causes the MICOM to resetitself. During normal operation, the voltage at the reset terminal is 5 Vdc. If the reset fails, the MICOM will not operate.
EXPLANATION FOR MICOM CIRCUIT
- 33 -
LRSC269****
LRSC269****
1-4. Load driving circuit The fan operates at the regular speed even if the door of the refrigerator or freezer is opened. When the doors are closed,
the fan reverts to its original speed. (A), (B), (C), and (D) of door switch for the freezer or refrigerator are connected to the door open sensing circuit in parallel
toward both ends of the switch. In the TEST mode, the fan will stop if any door is opened. It will resume operation when the door is closed.
LRSC269****
EXPLANATION FOR MICOM CIRCUIT
- 34 -
REF
REF
Measuring part (IC6) IC6-14 IC6-10 IC7-16 IC6-13 IC6-11 IC6-12
StatusON Within 1 V
OFF 12 V
Type of Load CompressorFrost Removal
HeaterAC Converting
RelayRefrigerator
LAMPDispensor
HeaterMagic room
Heater
1-5. Dispenser operation circuit
Check load driving status
Lever Switch sensing circuit
EXPLANATION FOR MICOM CIRCUIT
- 35 -
Measuring part
Lever S/WIC1(Micom) (No. 16)
On(Press)
OFF 5V
0 V(60 Hz)
5 V
Measuring part IC7-15 IC7-14 IC7-13 IC7-12
StatusON Within 1 V
OFF 12 V
Type of LoadGEAREDMOTOR
SOLENOIDCUBE
WATER VALVE
WATER
SOLENOIDDISPENSER
1-6. Door sensing circuitLRSC269****
Since door switches (A) and (B) are interconnected, if either fails, the other will not respond properly. If either switch fails, the light will not come on.
EXPLANATION FOR MICOM CIRCUIT
- 36 -
Closing 5 V ( A - B , C - D . Switch at both ends are at Off status)
Opening 5 V ( A - B , C - D . Switch at both ends are at On status)
Measuring partIC1 (MICOM) No. 47, 46 Pin
Door of Freezer / Refrigerator
1-7. Temperature sensing circuitLRSC269****
The circuits involving the freezer and refrigerator sensors control the temperature in both the freezer and the refrigerator.The Icemaker sensor detects when ice is made. The defrost sensor determines both the need for defrosting and theefficiency of the defrost operation. See the table below for voltages and checkpoints.
EXPLANATION FOR MICOM CIRCUIT
- 37 -
SENSOR CHECK POINT NORMAL(-30 °C ~ 50 °C) IN SHORT IN OPEN
Freezing sensor POINT A Voltage
Defrost sensor POINT B Voltage
Refrigerator sensor 1 POINT C Voltage
Refrigerator sensor 2 POINT D Voltage 0.5 V~4.5 V 0 V 5 V
Room temperature sensor POINT E Voltage
Water tank sensor POINT F Voltage
Optichill sensor POINT G Voltage
ROOM-SENSOR
WATER TANK-SENSOR
FRZ-SENSOR
DEFROST-SENSOR
REF-UPPER-SENSOR
REF-LOWER-SENSOR
OPTICHILL-SENSOR
1-8. Switch entry circuitThe following circuits sense signal from the test switch, damper motor reed switch for testing and diagnosing therefrigerator.
LRSC269****
1-9. Option designation circuit (model separation function)LRSC269****
The circuits shown above vary according to which features are included on your particular model.
uThese circuits are preset at the factory and cannot be altered.
EXPLANATION FOR MICOM CIRCUIT
- 38 -
P3437
R25
CC10223
R24
48 P47
P4647
Separation Connection Status Application Standard
Connection OptiChill existOP1
OUT OptiChill doesn’t exist
1-10. Stepping motor circuit
The motor is driven by magnetism formed in the areas of the coils and the stator. Rotation begins when a HIGH signal isapplied to MICOM Pin 33 of IC10 (TA7774F). This causes an output of HIGH and LOW signals on MICOM pins 34 and 35.
Explanation) The stepping motor is driven by sending signals of 3.33 mSEC via MICOM pins 33, 34, and 35, as shown inthe chart below. These signals are output via terminals 10, 11, 14, and 15 via input terminals 3, 6, and 8 ofIC10 (TA7774F), the motor drive chip. The output signals allow the coils wound on each phase of the stator toform a magnetic field, which causes rotation. Input to the terminals INA and INB of IC10 as shown in the chartbelow drives the motor.
EXPLANATION FOR MICOM CIRCUIT
- 39 -
TA7774F
CON9
R56 R57 R58
INA
INB
A
B
A
B
CCW (Reverse rotation) (Positive rotation) CW
1-11. Fan motor driving circuit (freezer, mechanical area)1. The circuit cuts all power to the fan drive IC, resulting in a standby mode.
2. This circuit changes the speed of the fan motor by varying the DC voltage between 7.5 Vdc and 16 Vdc.
3. This circuit stops the fan motor by cutting off power to the fan when it senses a lock-up condition.
LRSC269****
EXPLANATION FOR MICOM CIRCUIT
- 40 -
a , d part b part e part c , f part
Motor OFF 5V 2V or less 2V or less 0 V
Motor ON 2 ~ 3V 12 ~ 14V 8 ~ 16V 0 V
COMPRESSOR-FAN PWM
COMPRESSOR-FAN LOCK
FREEZER-FAN PWM
FREEZER-FAN LOCK
1-12. Temperature compensation circuitLRSC269****
u Temperature compensation table by adjustment value (difference value against current temperature) Ex) If you change compensation resistance of (RCR1) from 10 kΩ (current resistance) to 18 kΩ (modified resistance), the
temperature will increase by +1°C[+1.8°F].
EXPLANATION FOR MICOM CIRCUIT
- 41 -
Temperature compensation at refrigerator
Temperature compensation at freezer
R16 R17
Freezer Refrigerator
Resistance value Temperature Resistance value Temperature Remarks(RCF1) compensation (RCR1) compensation
180 kΩ +5 °C [+9°F] 180 kΩ +2.5 °C [+4.5°F] Warmer
56 kΩ +4 °C [+7.2°F] 56 kΩ +2.0 °C [+3.6°F]
33 kΩ +3 °C [+5.4°F] 33 kΩ +1.5 °C [+2.7°F]
18 kΩ +2 °C [+3.6°F] 18 kΩ +1.0 °C [+1.8°F]
12 kΩ +1 °C [+1.8°F] 12 kΩ +0.5 °C [+0.9°F]
10 kΩ 0 °C [0°F] 10 kΩ 0 °C [0°F] Reference temperature
8.2 kΩ -1 °C [-1.8°F] 8.2 kΩ -0.5 °C [-0.9°F]
5.6 kΩ -2 °C [-3.6°F] 5.6 kΩ -1.0 °C [-1.8°F]
3.3 kΩ -3 °C [-5.4°F] 3.3 kΩ -1.5 °C [-2.7°F]
2 kΩ -4 °C [-7.2°F] 2 kΩ -2.0 °C [-3.6°F]
470 Ω -5 °C [-9°F] 470 Ω -2.5 °C [-4.5°F] Cooler
u Temperature compensation table for the refrigerator is as follows:
u Temperature compensation for the freezer is performed the same as for the refrigerator. The value for the freezer is twicethat of the refrigerator.
u This circuit enters the necessary level of temperature compensation for adjusting the appliance. The method is the samefor every model in this appliance family.
EXPLANATION FOR MICOM CIRCUIT
- 42 -
470 Ω 2 kΩ 3.3 kΩ 5.6 kΩ 8.2 kΩ 10 kΩ 12 kΩ 18 kΩ 33 kΩ 56 kΩ 180 kΩ
No 0.5 °C 1 °C 1.5 °C 2 °C 2.5 °C 3 °C 3.5 °C 4 °C 4.5 °C 5 °C470Ω [0.9 °F] [1.8 °F] [2.7 °F] [3.6 °F] [4.5 °F] [5.4 °F] [6.3 °F] [7.2 °F] [8.1 °F] [9 °F]
change Up Up Up Up Up Up Up Up Up Up
0.5 °C No 0.5 °C 1 °C 1.5 °C 2 °C 2.5 °C 3 °C 3.5 °C 4 °C 4.5 °C2 kΩ [0.9 °F] [0.9 °F] [1.8 °F] [2.7 °F] [3.6 °F] [4.5 °F] [5.4 °F] [6.3 °F] [7.2 °F] [8.1 °F]
Down change Up Up Up Up Up Up Up Up Up
1 °C 0.5 °C No 0.5 °C 1 °C 1.5 °C 2 °C 2.5 °C 3 °C 3.5 °C 4 °C3.3 kΩ [1.8 °F] [0.9 °F] [0.9 °F] [1.8 °F] [2.7 °F] [3.6 °F] [4.5 °F] [5.4 °F] [6.3 °F] [7.2 °F]
Down Down change Up Up Up Up Up Up Up Up
1.5 °C 1 °C 0.5 °C No 0.5 °C 1 °C 1.5 °C 2 °C 2.5 °C 3 °C 3.5 °C5.6 kΩ [2.7 °F] [1.8 °F] [0.9 °F] [0.9 °F] [1.8 °F] [2.7 °F] [3.6 °F] [4.5 °F] [5.4 °F] [6.3 °F]
Down Down Down change Up Up Up Up Up Up Up
2 °C 1.5 °C 1 °C 0.5 ° No 0.5 °C 1 °C 1.5 °C 2 °C 2.5 °C 3 °C8.2 kΩ [3.6 °F] [2.7 °F] [1.8 °F] [0.9 °F] [0.9 °F] [1.8 °F] [2.7 °F] [3.6 °F] [4.5 °F] [5.4 °F]
Refrigerator Down Down Down Drop change Up Up Up Up Up Up
(RCR1) 2.5 °C 2 °C 1.5 °C 1 °C 0.5 °C No 0.5 °C 1 °C 1.5 °C 2 °C 2.5 °C10 kΩ [4.5 °F] [3.6 °F] [2.7 °F] [1.8 °F] [0.9 °F] [0.9 °F] [1.8 °F] [2.7 °F] [3.6 °F] [4.5 °F]
Down Down Down Down Down change Up Up Up Up Up
3 °C 2.5 °C 2 °C 1.5 °C 1 °C 0.5 °C No 0.5 °C 1 °C 1.5 °C 2 °C12 kΩ [5.4 °F] [4.5 °F] [3.6 °F] [2.7 °F] [1.8 °F] [0.9 °F] [0.9 °F] [1.8 °F] [2.7 °F] [3.6 °F]
Down Down Down Down Down Down change Up Up Up Up
3.5 °C 3 °C 2.5 °C 2 °C 1.5 °C 1 °C 0.5 °C No 0.5 °C 1 °C 1.5 °C18 kΩ [6.3 °F] [5.4 °F] [4.5 °F] [3.6 °F] [2.7 °F] [1.8 °F] [0.9 °F] [0.9 °F] [1.8 °F] [2.7 °F]
Down Down Down Down Down Down Down change Up Up Up
4 °C 3.5 °C 3 °C 2.5 °C 2 °C 1.5 °C 1 °C 0.5 °C No 0.5 °C 1 °C33 kΩ [7.2 °F] [6.3 °F] [5.4 °F] [4.5 °F] [3.6 °F] [2.7 °F] [1.8 °F] [0.9 °F] [0.9 °F] [1.8 °F]
Down Down Down Down Down Down Down Down change Up Up
4.5 °C 4 °C 3.5 °C 3 °C 2.5 °C 2 °C 1.5 °C 1 °C 0.5 °C No 0.5 °C56 kΩ [8.1 °F] [7.2 °F] [6.3 °F] [5.4 °F] [4.5 °F] [3.6 °F] [2.7 °F] [1.8 °F] [0.9 °F] [0.9 °F]
Down Down Down Down Down Down Down Down Down change Up
5 °C 4.5 °C 4 °C 3.5 °C 3 °C 2.5 °C 2 °C 1.5 °C 1 °C 0.5 °C No180 kΩ [9 °F] [8.1 °F] [7.2 °F] [6.3 °F] [5.4 °F] [4.5 °F] [3.6 °F] [2.7 °F] [1.8 °F] [0.9 °F]
Down Down Down Down Down Down Down Down Down Down change
Modificationresistance
Currentresistance
Compensation circuit for temperature of freezer
LRSC269****
u This circuit allows adjustment of the set temperature for compensation by changing jumpers at locations JCR1~JCR4.
EXPLANATION FOR MICOM CIRCUIT
- 43 -
R18
R19
R20
R21
R22
R23
Compensation Compensation for weak-cold for over-cold Temperature compensation value Remarks
JCR3 JCR4 JCR1 JCR2of refrigerator
0 °C (In shipment from factory)
CUT -1 °C [-1.8 °F]
CUT -1 °C [-1.8 °F]
CUT +1 °C [+1.8 °F]
CUT +1 °C [+1.8 °F]
CUT CUT -2 °C [-3.6 °F]
CUT CUT +2 °C [+3.6 °F]
CUT CUT 0 °C [0 °F]
CUT CUT 0 °C [0 °F]
CUT CUT 0 °C [0 °F]
CUT CUT 0 °C [0 °F]
CUT CUT CUT -1 °C [-1.8 °F]
CUT CUT CUT +1 °C [+1.8 °F]
CUT CUT CUT CUT 0 °C [0 °F]
Temperature compensation in CUT
JCR1 +1 °C [+1.8 °F]+2 °C [+3.6 °F]
JCR2 +1 °C [+1.8 °F]
JCR3 -1 °C [-1.8 °F]-2 °C [-3.6 °F]
JCR4 -1 °C [-1.8 °F]
1-13. Communication circuit The following communication circuit is used for exchanging information between the main MICOM of the Main PCB and thededicated MICOM of the LED (LCD) Display PCB.
A bi-directional lead wire assembly between the two boards is required for the display to function properly.
Poor communication occurs if a continuous information exchange fails to last more than 2 minutes between main MICOM ofmain PCB and LCD (LED) dedicated MICOM for LCD (LED) control of display PCB.
LRSC269****
EXPLANATION FOR MICOM CIRCUIT
- 44 -
ICEBEAMCOOLING
OFF
CUBE FILTERMONTH
EXPRESS/JET FRZ DISPENSER FREEZER REFRIGERATOR FILTER/LIGHT LOOK
ROOM TEMP
DISPENSER & KEY
F
WATER 54321
CRUSH
F F
3 SECS
PWBASSEMBLYDISPLAY
Main MICOM LCD(LED) dedicated MICOM
DC 12V
GND
Transmission (error status)
Reception (notch status)
Main PCB L/Wire FD/H(4-wires) Display PCB
Sensor resistance characteristics table
u Resistance value allowance of sensor is ±5%. u When measuring the resistance value of the sensor, allow the temperature of that sensor to stabilize for at least 3 minutes
before measuring. This delay is necessary because of the sense speed relationship. u Use a digital tester to measure the resistance. An analog tester has too great a margin of error.u Resistance of the cold storage sensor 1 and 2 should be measured with a digital tester after separating CON8 of the
PWB ASSEMBLY and the MAIN part. u Resistance of the freezing sensor shall be measured with a digital tester after separating CON7 of the PWB ASSEMBLY
and the MAIN part.
EXPLANATION FOR MICOM CIRCUIT
- 45 -
Measuring Temperature (°C) Freezing Sensor Cold storage sensor 1&2
Frost removal sensor, Outside sensor
-20 °C (-4 °F) 22.3 kΩ 77 kΩ
-15 °C (5 °F) 16.9 kΩ 60 kΩ
-10 °C (14 °F) 13.0 kΩ 47.3 kΩ
-5 °C (23 °F) 10.1 kΩ 38.4 kΩ
0 °C (32 °F) 7.8 kΩ 30 kΩ
+5 °C (41 °F) 6.2 kΩ 24.1 kΩ
+10 °C (50 °F) 4.9 kΩ 19.5 kΩ
+15 °C (59 °F) 3.9 kΩ 15.9 kΩ
+20 °C (68 °F) 3.1 kΩ 13 kΩ
+25 °C (77 °F) 2.5 kΩ 11 kΩ
+30 °C (86 °F) 2.0 kΩ 8.9 kΩ
+40 °C (104 °F) 1.4 kΩ 6.2 kΩ
+50 °C (122 °F) 0.8 kΩ 4.3 kΩ
1-14. OptiChill stepping MOTOR/DisplayLRSC26944**, LRSC26930**, LRSC26980TT
1-15. Jet freezing LRSC26944**, LRSC26930**
EXPLANATION FOR MICOM CIRCUIT
- 46 -
DAMPER HEATEROPTICHILL
OPTICHILLSTEPPINGMOTOR
OPTICHILLSENSOR
PWB ASSEMBLY DISPLAY
JET/FREEZERBOX FAN MOTOR
2. PWB parts diagram and list
2-1. PWB Assembly, main part diagramLRSC269****
EXPLANATION FOR MICOM CIRCUIT
- 47 -
2-2. Parts listLRSC269****
EXPLANATION FOR MICOM CIRCUIT
- 48 -
EXPLANATION FOR MICOM CIRCUIT
- 49 -
2-3. LRSC26944**, LRSC26980TTDISPLAY ASSEMBLY part diagram
EXPLANATION FOR MICOM CIRCUIT
- 50 -
DISPLAY circuit diagram
EXPLANATION FOR MICOM CIRCUIT
- 51 -
2-4. LRSC26910**, LRSC26911**, LRSC26920**, LRSC26922**, LRSC26930**DISPLAY ASSEMBLY part diagram
EXPLANATION FOR MICOM CIRCUIT
- 52 -
DISPLAY circuit diagram
EXPLANATION FOR MICOM CIRCUIT
- 53 -
PWB ASSEMBLY DISPLAY
3. PWB Circuit Diagram may vary according to model.
LRSC269****
EXPLANATION FOR MICOM CIRCUIT
- 54 -
REF-
REF-
EXPLANATION FOR MICOM CIRCUIT
- 55 -
ROOM-SENSOR
WATER TANK-SENSOR
FREEZER-SENSOR
DEFROST-SENSOR
FRZ-DOOR SWITCH
JET FREEZERBOX FAN MOTOR
PCB
ASS
EMB
LY D
ISPL
AY
PCB ASSEMBLY DISPLAY
REF-DOOR SWITCH
REF-UPPER-SENSOR
REF-LOWER-SENSOR
Only Models LRSC26944**, LRSC26980TTDAMPER HEATEROPTICHILL
OPTICHILL STEPPING MOTOR
OPTICHILL BOX FAN MOTOR
OPTICHILL SENSOR
1. Operation Principle
1-1. Operation Principle of Icemaker
1. Turning the Icemaker stop switch off (O) stops the icemaking function.2. Setting the Icemaker switch to OFF and then turning it back on will reset the icemaker control.
OPERATION PRINCIPLE AND REPAIR METHOD OF ICEMAKER
- 56 -
• Adjusts EJECTOR to Start Position with power on.
Power On
Start Position
IcemakingMode
DumpMode
Park Position
Fill
Test Mode
• Waits until water becomes cold after starting the ice making operation.
• Runs MOTOR to drop ice from the tray to the ICE BIN.
• Performs Icemaking Mode after supplying water by operating the SOLENOID in ICE VALVE.
• To operate LINE and SERVICE, press and hold the water supply control switch for 3 seconds. The icemaker will run through 3 stages: Dump Fill Icemaking.
• With the detect lever, checks if the ICE BIN is full.
2. Control Method
2-1. Start Position1. After POWER OFF or Power Outage, check the EJECTOR's position with MICOM initialization to restart. 2. How to check if it is in place:
- Check HIGH/LOW signals from HALL SENSOR in MICOM PIN. 3. Control Method to check if it is in place:
(1) EJECTOR is in place,- It is an initialized control, so the mode can be changed to ice making control.
(2) EJECTOR isn't in place:A. If EJECTOR is back in place within 2 minutes with the motor on, it is being initialized. If not, go to Step B.B. If EJECTOR is back in place within 18 minutes with the heater on (to control Heater on its OFF condition), it is being
initialized. If not, it is not functioning. Repeat Step B with Heater and Motor off.
2-2. Icemaking Mode1. Icemaking control refers to the freezing of supplied water in the ice trays. Complete Icemaking operations by measuring
the temperature of the Tray with Icemaking SENSOR. 2. Icemaking starts after completing fulfilled ice control and initial control.3. The Icemaking function is completed when the sensor reaches 19°F(-7°C), 60 to 240 minutes after starting.4. If the temperature sensor is defective, the Icemaking function will be completed in 4 hours.
2-3. Harvest with Dump Mode1. Harvest with Dump control refers to the operation of dropping cubes into the ice bin from the tray when Icemaking has
completed.2. Harvest with Dump control mode:
(1) Operates Heater for 30 seconds; then operate MOTOR.(2) After performing Step 1 (to control the Heater on its off condition), Ice-Removal control will be back in place wthin 18
minutes. (Hall SENSOR sign = OV). Ice removal is then complete. Then change the mode to the water supply control.If this control phase fails to start, it is not functioning. Put the Heater and Motor in the off position. Restart every 2hours. (Refer to fig.1)
NOTE : If the motor malfunctions and starts before the detect lever rises, MICOM regards the Ice-Removing phase ascompleted. Water then starts flowing. To prevent this, MICOM doesn’t switch to water-supply mode, but restarts the ice-removing mode. If this happens 3 times, the motor is malfunctioning and you should stop the loads (Heater, Motor). Thenrestart the Ice-Removing mode every 2 hours. (See Step 2 above.)
OPERATION PRINCIPLE AND REPAIR METHOD OF ICEMAKER
- 57 -
Heateron
off
on
0V
5V
off
30 sec.
10 sec.
Motor
Hall IC
Ice removingcompletion point
2 ms
Icemaking sensor temperature is 50°F(10˚C) or more Max. 18 minutesAfter detect LEVER rises
2-4. Fill / Park Position1. When Ice-Removing control (Normal Ice-Removing control, Ice-Removing control for test) has completed, and the
EJECTOR is in place, this control operates the ICE SOLENOID by time check in the compressor enclosure of therefrigerator. Then it supplies water to the ice making tray.
2. The water supply level is adjustable to 5 levels by pressing the water supply control switch. The selected level willdetermine the fill time.
Water supply amount TABLE
OPERATION PRINCIPLE AND REPAIR METHOD OF ICEMAKER
- 58 -
STAGE TIME TO SUPPLY INDICATIONS REMARKS
1
2
3
4
5
4 sec.
4.5 sec.
5 sec.
5.5 sec.
6 sec.
The water amount will vary depending
on the water control Switch setting as
well as the water pressure of the
connected water line.
2-5. Function TEST1. This is a compulsory operation for TEST, SVC, cleaning, etc. It is operated by pressing the water supply control KEY for 3 seconds.
2. It operates in the Icemaking mode, but not in the Ice-Removing mode or water supply process. (If there is an ERROR, itcan only be checked in the TEST mode.)
3. If the water supply control KEY is pressed for 3 seconds in the Icemaking mode (no matter what condition the Ice-Makingtray is in) the Ice-Removing operation starts immediately. Water is not yet frozen, so water is poured instead of ice. If thecontrol doesn’t operate normally in the TEST mode, check and repair as needed.
4. After water is supplied, the normal CYCLE is followed: Icemaking → Dump → Fill → Park Position.
5. When Stage 5 is completed in the TEST mode, minimize MICOM in 5 seconds, the time needed to supply water resets tothe previous status in the TEST mode.
Diagnosis TABLE
3. Defect diagnosis function
3-1. ERROR CODES shown on Ice Maker water supply control panel
ERROR indicators in table can be checked only in TEST mode.
OPERATION PRINCIPLE AND REPAIR METHOD OF ICEMAKER
- 59 -
STAGE ITEMS INDICATOR REMARKS
1
2
3
4
5
6
HEATER
MOTOR
HALL IC (detection
of position) I
VALVE (Detection of
ICE-FULL)
HALL IC (Detection
of ICE-FULL) II
reset
Five seconds after heater starts, heater willgo off if temperature recorded by sensor is10°C or lever is in up position.
Five seconds after heater starts, you canconfirm that motor is moving.
You can confirm Hall IC detection of position.
Two seconds after detection of initialposition, you can confirm that valve is on.
You can check whether hall is sensing Fullice condition. (If there is a ICE-FULL error,the fifth LED is not on.)
5 seconds after the last step is completed,the icemaker resets itself to its initial state.
NO DIVISION INDICATOR CONTENTS REMARKS
1
2
3
Normal
IcemakingSensor
malfunction
Icemaker Kitmalfunction
Mark time tosupply
Mark previous status on TEST mode
None
Cut or short-circuited wire
When ejector blades doesn’treach park position in 18 minutes
after Dump Mode starts.
Display switch operates properly
Make sure that the wireon each sensor is
connected.
Defects of HALL IC/MOTOR/HEATER/RELAY/
STALLED EJECTOR.
CIRCUIT
- 60 -
LRSC26944**, LRSC26980TT
CIRCUIT
- 61 -
LRSC26930**
FREEZER
FREEZER
FREEZER
COMPRESSOR
REF-UPPER
REF-LOWER
REF
REF-DOORSWITCH
ICEMAKERKIT
FREEZER-LAMP
FREEZER-DOORSWITCH
CIRCUIT
- 62 -
LRSC26920**, LRSC26922**
FREEZER
FREEZER
FREEZER
COMPRESSOR
REF-UPPER
REF-LOWER
REF
REF
DISPENSERLEVER SWITCH
FREEZER-DOORSWITCH
FREEZER-LAMP
Troubleshooting
TROUBLE DIAGNOSIS
- 63 -
PROBLEM CAUSE/CHECK POINTS REMARKS
1. Faulty start1) No power at outlet.2) No power on cord.
3) Shorted start circuit.
4) During defrost.
* Measuring instrument:Multi tester
Check the voltage.If the voltage is within ±85%of the rated voltage, it is OK.
Check the terminalmovement.
Check both terminals ofpower cord.Power conducts:OK.No power conducts:NG
Check both terminals of OLPIf power conducts:OK.If not:NG.
Check the resistance of bothterminals.At normal temperature 6:OK.If disconnected:∞.
Bad connection between adapter and outlet. (faulty adapter)The Inner diameter of adapter.The distance between holes.The distance between terminals.The thickness of terminal.
Bad connection between plug and adapter (faulty plug).The distance between pins.Pin outer diameter.
No power onpower cord.
OLP is off.
No electric power on compressor. - Faulty compressor.
Faulty PTC.
Disconnected copper wire.
Internal electrical short.
Faulty terminal contact.
Disconnected.
Capacity of OLP is small.
Characteristics of OLP is bad.
Bad connection.
Power is disconnected.
Inner Ni-Cr wire blows out.Bad internal connection.Faulty terminal caulking (Cu wire is cut).Bad soldering.
Weak connection.Short inserted cord length.Worn out tool blade.
Loose contact.- Large distance betweenmale terminal.
- Thin female terminal.
Terminal disconnected.
Bad sleeve assembly.
Power cord is disconnected.
Faulty soldering.
Start automatic defrost.Cycle was set at defrost when the refrigeratorwas produced.
Power does not conduct. - Damage.
Bad characteristics. - Initial resistance is big.
Bad connection withcompressor.
Bad terminal connection.
Too loose.Assembly is not possible.
TROUBLE DIAGNOSIS
- 64 -
PROBLEM CAUSE/CHECK POINTS REMARKS
2. No cooling. 2) Refrigeration system is clogged. Heat a clogged evaporator tocheck it. As soon as thecracking sound starts, theevaporator will begin tofreeze.
The evaporator does not coolfrom the beginning (no evidence of moistureattached).The evaporator is the sameas before even heat isapplied.
Moistureclogged.
No electricpower onthermo-stat.
Weld jointclogged.
Drier clogging.
Foreign material clogging.
Residual moisturein the evaporator.
Residual moisture.
Insufficient driercapacity.
Residual moisture in pipes.
Moisture penetration - Leave it in the air. - Moisture penetration.into the refrigeration oil.
Caps are missed.
Air blowing.
During transportation.During work.
Not performed.Performed.
Too short time.Low air pressure.Less dry air.
Air Blowing.
Leave it in the air.
Caps are missed.
Short pipe insert.
Pipe gaps.
Too much solder.
Too large.Damaged pipes.
Not dried in the compressor.Elapsed more than 6 months after dryingCaps are missed.No pressure when it is open.
During rest time.
After work.
Compressor cap is disconnected.Foreign materials are in the pipe.
Not performed.Too short.Impossible moistureconfirmation.Low air pressure.
Dry drier - Drier temperature.
Leave it in the air.
The capillary tube inserted depth. - Too much.
Capillary tube melts. - Over heat.
Clogged with foreign materials.
Reduced cross section by cutting. - Squeezed.
Desiccant powder.Weld oxides.Drier angle.
Check on packagecondition.Good storage afterfinishing.
TROUBLE DIAGNOSIS
- 65 -
PROBLEM CAUSE/CHECK POINTS REMARKS
3. Refrigeration is weak.
Plateheater
Cordheater
1) Refrigerant Partly leaked.
2) Poor defrosting capacity.
Drain path (pipe) clogged.
Defrost heater does not generate heat.
Weld joint leak.Parts leak.
Inject adiabatics into drainhose.
Foreign materialspenetration.
Cap drain is not disconnected.
Inject through thehole.Seal with drain.
Adiabatics lump input.Damage by a screw orclamp.Other foreign materials input.
Parts disconnected.
Wire is cut.- Heating wire.- Contact pointbetween heatingand electric wire.
Dent by fin evaporator.Poor terminal contacts.
Wire is cut.- Lead wire.- Heating wire.- Contact pointbetween heating andelectric wire.
Heating wire is corroded- Water penetration.Bad terminal connection.
Check visually.
Check terminal Conduction: OK.No conduction: NG.If wire is not cut, refer toresistance.P=PowerV=VoltageR=Resistance
V2P= —
R
V2R= —
P
- 66 -
TROUBLE DIAGNOSIS
PROBLEM CAUSE/CHECK POINTS REMARKS
3. Refrigeration is weak.
3) Cooling air leak.
4) No cooling air circulation.
Residualfrost.
No automatic defrosting.
Defrost does not return.
Bad gasket adhestion
Door sag.
Faulty fan motor.
Weak heat from heater.
Too short defrosting time. Defrost Sensor.
- Faulty characteristics.
Seat-D (missing, location. thickness).
Structural fault. Gasket gap.
Air inflow through the fan motor.
Bad insulation of case door.
Sheath Heater - rated.
Heater plate
Heater cord-L
Gap.Bad attachment.Contraction.
Bad adhesion.Weak binding force at hinge.
Fan motor.
Door switch.
Self locked.Wire is cut.Bad terminal contact.
Contact distance.Button pressure.Melted contact.Contact.
Poor doorattachment.Door liner(dimension).Contraction innerliner.Misalignment.Bad terminalconnection.Adiabatics liquidleak.
Faults.
Refrigerator and freezer switch reversed.Button is not pressed.
No contact to drain.Loosened stopper cord.
Not touching theevaporator pipe.Location of assembly(top and middle).
Check the fan motorconduction: OK.No conduction: NG.
TROUBLE DIAGNOSIS
- 67 -
PROBLEM CAUSE/CHECK POINTS REMARKS
3. Refrigeration is weak.
4) No cooling air circulation.
5) Compressor capacity.
6) Refrigerant too much or too little.
7) Continuous operation- No contact of temperature controller. - Foreign materials.
8) Damper opens continuously.Foreign materials jammed.
Failed sensor. - Position of sensor.Characteristics of damper.
9) Food storing place. - Near the outlet of cooling air.
Faulty fan motor.
Small cooling airdischarge.
Fan is constrained.
Insufficientmotor RPM
Faulty fan.
Shorud. Bent.
Ice and foreign materials on rotating parts.
Fan shroud contact. - Clearance.Damping evaporator contact.Accumulated residual frost.
Fan misuse.Bad shape.Loose connection. - Not tightly connected.Insert depth.
Rating misuse.Small capacity.Low valtage.
Malfunction of charging cylinder.Wrong setting of refrigerant.Insufficient compressor. - Faulty compressor.
Fan overload. - Fan misuse.Bad low termperature RPM characteristics.Rated power misuse.Low voltage.
Adiabatics liquid dump.The EPS (styrofoam) drip tray has sediment in it.A screw or other foreign material has fallen into the driptray or damper.
Bad characteristics of its own temperatue.Parts misuse.Charge of temperature - Impact.characteristics.
Check visually afterdisassembly.
Check visually afterdisassembly.
TROUBLE DIAGNOSIS
- 68 -
PROBLEM CAUSE/CHECK POINTS REMARKS
4. Warmrefrigeratorcompartmenttemperature.
5. No automaticoperation.(faulty contacts)
6. Condensation and ice formation.
1) Clogged cooling path.
2) Food storage.
1) Faulty temperature sensor in freezer or refrigerator compartment.
2) Refrigeration load is too much.
3) Poor insulation.4) Bad radiation.
5) Refrigerant leak.6) Inadequate of refrigerant.7) Weak compressor discharging power.
8) Fan does not work.9) Button is set at strong.
1) Ice in freeezer compartment.
2) Condensation in the refrigerator compartment.
3) Condensation on liner foam.
Adiabatics liquid leak.Foreign materials. –– Adiabatics dump liquid.
Faulty contact.Faulty temperature characteristics.
External air inflow. –– Bushing installed incorrectly.Door opens but not closes.
Gap around gasket. –– Contraction, distortion, loose, door twisted, corner notfully inserted.
Food vapor. –– Storing hot food. –– Unsealed food.
Door opensbut not closes.
Gasket gap.
Cool air leakand transmitted.
High ambient temperature.Space is secluded.
Different rating.Small capacity.
Store hot food.Store too much at once.Door open.Packages block air flow.
Food.
Frequent opening and closing.Cool air leak.Poor door closing. – Partially open.
Too much food.Hot food.
Weak door closing power.Stopper malfunction.Door sag.Food hinders door closing.
Insufficient closing.Door sag.Food hinders door closing.
Top table part.Out plate Ref/Lower part.
Not fully filled.
Flange gap. –– Not sealed.Gasket gap.
Inspect parts measurementsand check visually.
TROUBLE DIAGNOSIS
- 69 -
PROBLEM CAUSE/CHECK POINTS REMARKS
6. Condensation and ice formation.
7. Sounds
4) Condensation on door.Condensation on the duct door. - Duct door heater is cut.Condensation on thedispense recess.
Condensation on the Not fully filled. Surface.door surface. Corner.
Adiabatics liquid contraction.
Condensationon the gasketsurface.
5) Water on the floor.Condensation in the refrigerator compartment.Defrosted water overflows. Clogged discharging hose.Discharging hose Evaporation tray located at wrong place.location.Tray drip. Damaged.
Breaks, holes.Small Capacity.
Position of drain.
1) Compressor compartment operating sounds.Compressor sound Sound from machine itself.inserted. Sound from vibration.
Restrainer.Bushing Too hard.seat. Distorted.
Aged.Burnt.
Stopper. Bad Stopper Not fitassembly. (inner
diameterof stopper).Tilted.Not
Compressor base not connected.Bad welding compressor stand(fallen).Foreign materials in the compressor compartment.
OLP sound. Chattering sound.Insulation paper vibration.
Capacitor noise. Pipe contacts each other. – Narrow interval.Pipe sound. No vibration damper. Damping Bushing-Q.
Damping Bushing-S.Capillary tube unattached.
Recess Heater is cut.Duct door is open. / Foreign material clogging.
Bad wing adhesion. Wing sag(lower part).Door liner shape mismatch.
Corner. Too much notch.Broken.
Home Bar heater is cut.
Liquid shortage.Liquid leak.
TROUBLE DIAGNOSIS
- 70 -
PROBLEM CAUSE/CHECK POINTS REMARKS
7. Sounds 1) Compressor compartment operating sounds.Transformer sound.
Drip tray vibration sound.
Back cover machine sound.
Condenser drain sound.
2) Freezer compartment sounds.Fan motor sound.
Sounds from fancontact.
Unbalanced fan sounds.
Motor shaftcontact sounds.
Resonance.Evaporator noise.
3) Bowls and bottles make contact on top shelf.
4) Refrigerator roof contact.
5) Refrigerator side contact.
6) Insufficient lubricants on door hinge.
Its own fault. –– Core gap.Bad connection. –– Correct screw connection.
Bad assembly.Distortion.Foreign materials inside.
Bad connection.Partly damaged.
Not connected.Bad pipe caulking.
Normal operating sound.Vibration sound. Aged rubber seat.
Bad torque for assembling motorbracket.
Fan guide contact.Shroud burr contact.Damping evaporator contact.Residual frost contact.
Unbalanced
Ice on the fan. –– Air intake (opposite to motorbushing assembly.)
Supporter distorted.Tilted during motor assembly.
Evaporator pipe contact. –– No damping evaporator.Sound from refrigerant. –– Stainless steel pipe shape in
accumulator.Sound from fin evaporator and pipe during expansionand contraction.
Damaged heater cord.Narrow evaporator interval.
Surface machining conditions.Fan distortion.Misshappen.Burr.
TROUBLE DIAGNOSIS
- 71 -
PROBLEM CAUSE/CHECK POINTS REMARKS
8. Faulty lamp(freezer andrefrigeratorcompartment).
9. Faulty internal voltage (short).
1) Lamp problem. Filament blows out.Glass is broken.
2) Bad lamp assembly. Not inserted.Loosened by vibration.
3) Bad lamp socket.Disconnection. Bad soldering.
Bad rivet contact.Short. Water penetration. Low water
level in tray.
Bad elasticity of contact.Bad contact (corrosion).
4) Door switch. Defective.Refrigerator and freezer switches are reversed.Travel distance.Bad connection.Bad terminal contact.Adiabatics liquid leak..
1) Lead wire is damaged.Wire damage when assembling PTC Cover.Outlet burr in the bottom plate.Pressed by cord heater. lead wire, evaporator pipe.
2) Exposed terminal.Compressor Compartment terminal. - Touching other
components.Freezer compartment terminal. - Touching evaporator pipe.
3) Faulty parts.Transformer. Coil contacts cover.
Welded terminal parts contact cover.Compressor. Bad coil insulation.Plate heater.Melting fuse. Sealing is broken. Moisture penetration.Cord heater. Pipe damaged. Moisture penetration.
Bad sealing.Sheath heater.
Connect conduction andnon-conduction parts andcheck with tester. Conduction: NG.Resistance∞: OK.
TROUBLE DIAGNOSIS
- 72 -
PROBLEM CAUSE/CHECK POINTS REMARKS
10. Structure, appearance,and others.
1) Door foam.Sag.
Noise duringoperation.
Malfunction.
2) Odor.Temperature of refrigeratorcompartment.
Deodorizer.
Food Storage.
Others.
Hinge loose
Weak gasketadhesion.Fixed tape.
Hinge interference.
Not closed Interference between door liner and inner liner.Refrigeratorcompartment is opened when freezercompartment is closed (faulty stopper).
High. Faulty damper control.Button is set at weak.Door is open (interference byfood).
No deodorizer.Poor capacity.
Seal condition.Storage of fragrant foods.Long term storage.
Odors from cleaners or items which should notbe stored in a refrigerator.
Bigger door foam.Hinge-Pin tilted-Poor flatness.No washer.No grease.
Stopper worn out.Bad freezer compartment doorassembly.No stopper.
Bolt is loosened duringtransportation.Not tightly fastened.Screw worn out .Adhesion surface.
Not well fixed.
11. P
ow
er
12.
Co
mp
ress
or
TROUBLE DIAGNOSIS
- 73 -
Pro
ble
ms
Cau
ses
Ch
ecks
Mea
sure
sR
emar
ks
No
pow
er o
n -
Pow
er c
ord
cut.
- C
heck
the
volta
ge w
ith a
test
er.
-Rep
lace
the
com
pone
nts.
outle
t.-
Fau
lty c
onne
ctor
inse
rtio
n.-
Che
ck v
isua
lly.
-Rec
onne
ct th
e co
nnec
ting
part
s.
- F
aulty
con
nect
ion
betw
een
plug
- C
heck
vis
ually
.-R
econ
nect
the
conn
ectin
g pa
rts.
and
adap
ter.
Fus
e bl
ows
out.
- S
hort
circ
uit b
y w
rong
con
nect
ion.
- C
heck
the
fuse
with
test
er-
Fin
d an
d re
mov
e th
e ca
use
of
- R
epla
ce w
ith r
ated
- Lo
w v
olta
ge p
rodu
cts
are
or v
isua
lly.
prob
lem
(ex
. sho
rt, h
igh
volta
ge,
fuse
afte
r co
nfirm
ing
conn
ecte
d to
hig
h vo
ltage
.-
Che
ck th
e in
put v
olta
ge w
ith a
test
er.
low
vol
tage
).
its s
peci
ficat
ion.
- S
hort
circ
uit b
y in
sect
s.(b
etw
een
pow
er c
ord
and
prod
ucts
).-
Rep
lace
with
rat
ed fu
se.
- E
lect
ricity
leak
age.
- C
heck
the
resi
stan
ce o
f pow
er c
ord
If
fuse
blo
ws
out
- H
igh
volta
ge.
with
test
er (
if it
is 0
Ω, i
t is
shor
ted)
.fr
eque
ntly
, con
firm
- S
hort
circ
uit o
f com
pone
nts
the
caus
e an
d pr
even
t.
(tra
ckin
g du
e to
moi
stur
e an
d du
st
pene
trat
ion)
.
Pro
ble
ms
Cau
ses
Ch
ecks
Mea
sure
sR
emar
ks
Com
pres
sor
- F
aulty
PT
C.
- C
heck
the
resi
stan
ce.
- If
resi
stan
ce is
infin
ite, r
epla
ce it
does
not
V
laue
:∞is
def
ectiv
e.w
ith n
ew o
ne.
oper
ate.
- If
it is
not
infin
ite, i
t is
norm
al.
- C
heck
oth
er p
arts
.
- C
ompr
esso
r is
froz
en.
- If
com
pres
sor
asse
mbl
y pa
rts
are
- D
urin
g fo
rced
ope
ratio
n:
norm
al (
capa
cito
r, P
TC
, OLP
),
- O
pera
tes:
Che
ck o
ther
par
ts.
appl
y po
wer
dire
ctly
to th
e -
Not
ope
rate
: Rep
lace
the
froz
en
com
pres
sor
to fo
rce
oper
atio
n.co
mpr
esso
r w
ith n
ew o
ne, w
eld,
evac
uate
, and
rec
harg
e re
frig
eran
t.
OLP
It
sta
rts
as s
oon
as it
is•
Ref
er to
wel
d re
pair
proc
edur
es.
cont
acte
d.
Aux
iliar
y w
indi
ng
Mai
n w
indi
ng
Pow
er
13. T
emp
erat
ure
TROUBLE DIAGNOSIS
- 74 -
Pro
ble
ms
Cau
ses
Ch
ecks
Mea
sure
sR
emar
ks
Hig
h P
oor
cool
air
circ
ulat
ion
due
to fa
ulty
- Lo
ck –
– C
heck
res
ista
nce
with
a
- R
epla
ce fa
n m
otor
.
tem
pera
ture
fan
mot
or.
test
er.
in th
e fr
eeze
r0Ω
: sho
rt.
com
part
men
t.∞
Ω: c
ut.
- R
econ
nect
and
rei
nser
t.
- R
otat
e ro
tor
man
ually
and
che
ck
rota
tion.
- W
ire is
cut
.
- B
ad te
rmin
al c
onta
ct: C
heck
-
Mai
ntai
n cl
eara
nce
and
rem
ove
ice
term
inal
vis
ually
.(R
epai
r an
d/or
rep
lace
shr
oud
if fa
n
- F
an c
onst
rain
t. –
Fan
shr
oud
is c
onst
rain
ed b
y sh
roud
cont
act:
Con
firm
defo
rmat
ion)
.
visu
ally
.
– F
an ic
ing:
Con
firm
vis
ually
.
Fau
lty fa
n m
otor
due
to fa
ulty
doo
r -
Iced
but
ton
(fau
lty)
oper
atio
n:-
Con
firm
icin
g ca
uses
and
rep
air.
switc
h op
erat
ion.
Pre
ss b
utto
n to
che
ck-
Rep
lace
doo
r sw
itch.
- F
aulty
but
ton
pres
sure
and
con
tact
:
Pre
ss b
utto
n to
che
ck o
pera
tion.
- D
oor
cann
ot p
ress
doo
r sw
itch
- D
oor
sag:
fix
door
.
butto
n: C
heck
vis
ually
.-
Doo
r lin
er b
ent:r
epla
ce d
oor
or
atta
ch s
heet
s.
Bad
rad
iatio
n co
nditi
ons
in
- C
heck
the
clea
ranc
e be
twee
n th
e -
Kee
p cl
eara
nce
betw
een
- T
he fa
n m
ay b
e
com
pres
sor
com
part
men
t.re
frig
erat
or a
nd w
all (
50 m
m in
re
frig
erat
or a
nd w
alls
(m
inim
um
brok
en if
cle
anin
g
min
imum
).50
mm
).pe
rfor
ms
whi
le th
e
- C
heck
dus
t on
the
grill
in
- R
emov
e du
st a
nd c
onta
min
ants
re
frig
erat
or is
on.
com
pres
sor
com
part
men
t.fr
om g
rill f
or e
asy
heat
rad
iatio
n.
- C
heck
dus
t on
the
cond
ense
r co
ils.
- R
emov
e th
e du
st w
ith v
acuu
m
clea
ner
from
the
coils
con
dens
er
whi
le th
e re
frig
erat
or is
off.
14. C
oo
ling
TROUBLE DIAGNOSIS
- 75 -
Pro
ble
ms
Cau
ses
Ch
ecks
Mea
sure
sR
emar
ks
Hig
h R
efrig
eran
t lea
k.C
heck
seq
uenc
eW
eld
the
leak
ing
part
, rec
harg
e th
eD
rier
mus
t be
repl
aced
.
tem
pera
ture
1. C
heck
the
wel
ded
part
s of
the
refr
iger
ant.
in th
e fr
eeze
rdr
ier
inle
t and
out
let a
nd d
rier
com
part
men
t.au
xilia
ry in
the
com
pres
sor
com
part
men
t (hi
gh p
ress
ure
side
).
2. C
heck
the
end
of c
ompr
esso
r
seal
ing
pipe
(lo
w p
ress
ure
side
).
3. C
heck
silv
er s
olde
red
part
s.
(Cu
+ F
e / F
e +
Fe)
.
4. C
heck
ben
ding
are
a of
wire
cond
ense
r pi
pe in
com
pres
sor
com
part
men
t (cr
acks
can
happ
en d
urin
g be
ndin
g).
5. C
heck
oth
er p
arts
(co
mpr
esso
r
com
part
men
t and
eva
pora
tors
in
free
zer
com
part
men
t).
Sho
rtag
e of
ref
riger
ant.
Che
ck fr
ost f
orm
atio
n on
the
surf
ace
- F
ind
out t
he le
akin
g ar
ea, r
epai
r,D
rier
mus
t be
repl
aced
.
of e
vapo
rato
r in
the
free
zer
evac
uate
, and
rec
harg
e th
e
com
part
men
t.re
frig
eran
t.
- If
the
fros
t for
ms
even
ly o
n th
e -
No
leak
ing,
rem
ove
the
rem
aini
ng
surf
ace,
it is
OK
.re
frig
eran
t, an
d re
char
ge n
ew
- If
it do
es n
ot, i
t is
not g
ood.
refr
iger
ant.
TROUBLE DIAGNOSIS
- 76 -
Pro
ble
ms
Cau
ses
Ch
ecks
Mea
sure
sR
emar
ks
Hig
h C
ycle
pip
e is
clo
gged
.C
heck
seq
uenc
e.-
Hea
t up
com
pres
sor
disc
harg
ing
Dire
r m
ust b
e re
plac
ed.
tem
pera
ture
in1.
Che
ck te
mpe
ratu
re o
f con
dens
erw
eld
join
ts w
ith to
uch,
dis
conn
ect
the
free
zer
man
ually
.th
e pi
pes,
and
che
ck th
e cl
oggi
ng.
com
part
men
t.If
it is
war
m, O
K.
Rem
ove
the
caus
es o
f clo
ggin
g,
If it
is n
ot, c
ompr
esso
r di
scha
rgin
gw
eld,
eva
cuat
e, a
nd r
echa
rge
join
ts m
ight
be
clog
ged.
the
refr
iger
ant.
2. M
anua
lly c
heck
whe
ther
hot
line
- If
it's
war
m, O
K. I
f it's
not
,
pipe
is w
arm
.co
nden
ser
disc
harg
ing
line
wel
d
If it
is w
arm
, OK
.jo
ints
mig
ht b
e cl
ogge
d.
If it
is n
ot, c
onde
nser
out
let w
eld
Dis
conn
ect w
ith to
rch,
rem
ove
the
join
ts m
ight
be
colg
ged.
caus
es, e
vacu
ate,
and
rec
harg
e
seal
ref
riger
ant.
Leak
at l
oop
pipe
wel
d jo
int
Che
ck s
eque
nce.
Rep
lace
the
com
pres
sor,
wel
d,
Drie
r m
ust b
e re
plac
ed.
(dis
char
ge)
in c
ompr
esso
r.1.
Man
ually
che
ck w
heth
er
evac
uate
, and
rec
harg
e re
frig
eran
t.
cond
ense
r is
war
m, I
t is
not w
arm
and
the
fros
t for
ms
part
ly o
n th
e
evap
orat
or in
the
free
zer
com
part
men
t.
Fau
lty c
oolin
g fa
n in
the
com
pres
sor
Che
ck s
eque
nce.
- R
epla
ce if
mot
or d
oes
not o
pera
te.
com
part
men
t.1.
Che
ck c
oolin
g fa
n op
erat
ion.
- If
fan
is d
isco
nnec
ted,
che
ck fa
n
2. C
heck
that
coo
ling
fan
is
dam
age
and
reas
sem
ble
it.
disc
onne
cted
from
the
mot
or.
R
efer
to fa
n m
otor
dis
asse
mbl
y
and
asse
mbl
y se
quen
ce.
15. D
efro
stin
g f
ailu
re
TROUBLE DIAGNOSIS
- 77 -
Pro
ble
ms
Cau
ses
Ch
ecks
Mea
sure
sR
emar
ks
No
defr
ostin
g.H
eate
r do
es n
ot g
ener
ate
heat
as
1. C
heck
the
resi
stan
ce o
f hea
ter.
Hea
ting
wire
is s
hort
and
wire
is c
ut.
Sea
l the
lead
wire
with
the
heat
ing
wire
is c
ut o
r th
e ci
rcui
t0Ω
: Sho
rt. ∞
Ω: C
ut.
• P
arts
rep
lace
men
t: R
efer
to p
arts
insu
latio
n ta
pe a
nd h
eat
is s
hort
ed.
Ten
s to
thou
sand
s Ω
: OK
.ex
plan
atio
ns.
shrin
k tu
be if
the
cut
1) H
eatin
g w
ire is
dam
aged
whe
n 2.
Che
ck th
e re
sist
ance
bet
wee
n le
ad w
ire is
acc
essi
ble
to
inse
rtin
g in
to th
e ev
apor
ator
.ho
usin
g te
rmin
al a
nd h
eate
rre
pair.
2) L
ead
wire
of h
eate
r is
cut
.su
rfac
e.
3) H
eatin
g w
ire a
t lea
d w
ire c
onta
cts
0Ω: S
hort
. ∞Ω
: Cut
.
is c
ut.
Ten
s to
thou
sand
s Ω
: Sho
rt.
Suc
tion
tube
and
dis
char
ge o
rific
e:
1. C
onfir
m fo
reig
n m
ater
ials
. In
case
1) P
ush
out i
mpu
ritie
s by
inse
rtin
g
1. Im
purit
ies.
of ic
e, in
sert
the
copp
er li
ne
copp
er w
ire. (
Tur
n of
f mor
e th
an
2. Ic
e.th
roug
h th
e ho
le to
che
ck.
3 ho
urs
and
pour
in h
ot w
ater
if
2. P
ut h
ot w
ater
into
the
drai
nfr
ost i
s se
vere
.)
(che
ck d
rain
s ou
tsid
e).
2) P
ut in
hot
wat
er to
mel
t dow
n fr
ost.
3) C
heck
the
wat
er o
utle
t.
4) P
ush
the
heat
er p
late
to s
uctio
n
duct
man
ually
and
ass
embl
e th
e
disc
onne
cted
par
ts.
Gap
bet
wee
n S
uctio
n du
ct a
nd1.
Con
firm
in th
e S
uctio
n du
ct.
1) T
urn
off t
he p
ower
, con
firm
Hea
ter
plat
e (I
ce in
the
gap)
.im
purit
ies
and
ice
in th
e ga
p, a
nd
supp
ly h
ot w
ater
unt
il th
e ic
e in
the
gap
mel
ts d
own.
2) P
ush
the
Hea
ter
plat
e to
dra
in
botto
m w
ith h
and
and
asse
mbl
e
the
disc
onne
cted
par
ts.
Wro
ng h
eate
r ra
ting
(or
wro
ng
1. C
heck
hea
ter
labe
l.F
aults
:rep
lace
.
asse
mbl
y).
2. C
onfir
m th
e ca
paci
ty a
fter
- H
ow to
rep
lace
:
subs
titut
ing
the
resi
stan
ce v
alue
Ref
er to
mai
n pa
rts.
into
the
form
ula.
(V: R
ated
vol
tage
of u
ser c
ount
ry)
(R: R
esis
tanc
e of
test
er[Ω
])
Com
pare
P a
nd la
vel c
apac
ity.
Tole
ranc
e: ±
7%
V2
P=
–– R
TROUBLE DIAGNOSIS
- 78 -
Pro
ble
ms
Cau
ses
Ch
ecks
Mea
sure
sR
emar
ks
No
defr
ostin
gM
eltin
g fu
se b
low
s.-
Che
ck m
eltin
g fu
se w
ith te
ster
. -
Fau
llty
part
s: p
arts
rep
lace
men
t.
1) L
ead
wire
is c
ut.
If 0Ω
: OK
.-
Che
ck w
ire c
olor
whe
n m
aeas
urin
g
2) B
ad s
olde
ring.
If ∞
Ω: w
ire is
cut
.re
sist
ance
with
a te
ster
.
Ice
in th
e S
uctio
n du
ct.
1. C
heck
the
inne
r du
ct w
ith m
irror
.1)
Tur
n po
wer
off.
1) Ic
ing
by fo
reig
n m
ater
ials
in th
e2)
Rai
se th
e fr
ont s
ide
(doo
r si
de),
duct
.su
ppor
t the
fron
t sid
e le
gs, a
nd le
t
2) Ic
ing
by c
ool a
ir in
flow
thro
ugh
the
ice
mel
t nat
ural
ly. (
If po
wer
is
the
gap
of h
eate
r pl
ate.
on, m
elt t
he fr
ost b
y fo
rced
3) Ic
ing
by th
e ga
p of
hea
ter
plat
e.de
fros
ting.
)
2. C
heck
by
inse
rtin
g so
ft co
pper
3)
Rea
ssem
ble
the
heat
er p
late
.
wire
into
the
duct
(so
ft an
d th
in
copp
er n
ot to
impa
ir he
atin
g w
ire).
Bad
coo
l air
inflo
w a
nd d
isch
arge
, 1.
Tur
n on
pow
er, o
pen
or c
lose
the
1) C
heck
the
faul
ty c
onne
ctor
of
and
bad
defr
ostin
g du
e to
faul
tydo
or, c
heck
that
mot
or fa
n ho
usin
g an
d re
asse
mbl
e w
rong
ly
cont
act a
nd in
sert
ion
(bad
con
nect
orop
erat
es (
If it
oper
ates
, mot
or fa
nas
sem
bled
par
ts.
inse
rtio
n in
to h
ousi
ng o
f hea
ter,
is
OK
).2)
If th
e pa
rts
are
dam
aged
,
mel
ting,
fuse
, and
mot
or fa
n).
2. D
isco
nnec
t par
ts in
the
refr
iger
ator
rem
ove
the
part
s an
d re
plac
e it
com
part
men
t, ch
eck
the
conn
ectio
nw
ith a
new
one
.
arou
nd th
e ho
usin
g vi
sual
ly,
defr
ost,
and
conf
irm h
eat g
ener
atio
n
on th
e he
ater
. Do
not p
ut h
ands
on
the
shea
th h
eate
r.
3. C
heck
the
part
s w
hich
hav
e fa
ults
desc
ribed
in 1
& 2
(m
echa
nica
l
mod
el: d
isco
nnec
t the
rmos
tat
from
the
asse
mbl
y).
16. I
cin
g
TROUBLE DIAGNOSIS
- 79 -
Pro
ble
ms
Cau
ses
Ch
ecks
Mea
sure
sR
emar
ks
Icin
g in
the
1) B
ad c
ircul
atio
n of
coo
l air.
- C
heck
the
food
is s
tore
d pr
oper
ly-
Be
acqu
aint
ed w
ith h
ow to
use
.-
Che
ck th
e de
fros
t
refr
iger
ator
-
Clo
gged
inta
ke p
ort i
n th
e (c
heck
dis
char
ge a
nd in
take
por
t -
Sea
ling
on c
onne
ctin
g pa
rts.
rela
ted
part
s if
prob
lem
com
part
men
t.re
frig
erat
or c
ompa
rtm
ent.
are
clog
ged)
.-
Che
ck th
e da
mpe
r an
d re
plac
eis
cau
sed
by fa
ulty
- D
ampe
r ic
ing.
- S
ealin
g is
not
goo
d.-
Che
ck ic
ing
on th
e su
rfac
e of
it
if it
has
defe
cts.
defr
ostin
g.
- P
ipe
icin
g.-
Too
muc
h fo
od is
sto
red
and
clog
sba
ffle
and
cool
air
path
(pi
pe)
afte
r-
Che
ck d
efro
st. (
Afte
r fo
rced
- D
isch
argi
ngth
e di
scha
rge
port
.di
ssem
blin
g th
e co
ntai
ner
box.
defr
ostin
g, c
heck
ice
in th
e
pipe
icin
g.-
Bad
def
rost
ing.
- C
heck
icin
g at
inta
ke p
orts
of
evap
orat
or a
nd p
ipes
.)
free
zer
and
refr
iger
ator
com
part
men
t.
2) F
aulty
doo
r or
ref
riger
ator
- C
heck
gas
ket a
ttach
ed c
ondi
tions
.-
Cor
rect
the
gask
et a
ttach
men
t-
Rep
lace
men
t sho
uld
com
part
men
t.-
Che
ck d
oor
asse
mbl
y co
nditi
ons.
cond
ition
s an
d re
plac
e it.
be d
one
whe
n it
- F
aulty
gas
ket.
- D
oor
asse
mbl
y an
d re
plac
emen
t.ca
nnot
be
repa
ired.
- F
aulty
ass
embl
y.
3) O
verc
oolin
g in
the
refr
iger
ator
- C
heck
ref
riger
ator
com
part
men
t-
Rep
lace
faul
ty p
arts
.
com
part
men
t.is
ove
rcoo
led
(whe
n bu
tton
- F
aulty
dam
per
in th
e re
frig
erat
orpr
esse
d on
wea
k).
com
part
men
t.-
Che
ck p
arts
are
faul
ty.
- F
aulty
MIC
OM
(fa
ulty
sen
sor)
4) B
ad d
efro
stin
g-
Che
ck fr
ost o
n th
e ev
apor
ator
- C
heck
par
ts r
elat
ed to
def
rost
ing.
- M
oist
ure
does
not
free
ze
- H
eate
r w
ire is
cut
.af
ter
diss
embl
ing
shro
ud a
nd fa
n-
Che
ck d
efro
stin
g. (
Che
ck ic
e on
the
on th
e ev
apor
ator
but
- D
efec
tive
defr
ost s
enso
r.gr
ille.
evap
orat
or a
nd p
ipe.
)ca
n be
suc
ked
into
the
- D
efro
sing
cyc
le.
- C
heck
ice
on in
take
por
t of f
reez
erre
frig
erat
or, w
here
it
and
refr
iger
ator
com
part
men
t.co
nden
ses
and
free
zes.
Thi
s in
terf
eres
with
col
d
air
circ
ulat
ion
and
subl
imat
ion
of th
e ic
e.
5) C
usto
mer
s ar
e n
ot fa
mili
ar w
ith-
Che
ck fo
od in
terf
eres
with
doo
r-
Be
acqu
aint
ed w
ith h
ow to
use
.
this
mac
hine
.cl
osin
g.
- D
oor
open
s.-
Che
ck ic
e on
the
ceili
ngs.
- H
igh
tem
pera
ture
, hig
h m
oist
ure,
and
high
load
.
TROUBLE DIAGNOSIS
- 80 -
Pro
ble
ms
Cau
ses
Ch
ecks
Mea
sure
sR
emar
ks
Ice
in th
e fr
eeze
r 1)
Bad
coo
ling
air
circ
ulat
ion.
- C
heck
food
sto
rage
con
ditio
ns
- B
e ac
quai
nted
with
how
to u
se.
- C
heck
the
part
s re
late
d
com
part
men
t.-
Inta
ke p
ort i
s cl
ogge
d in
the
free
zer
visu
ally
.(C
heck
clo
ggin
g at
inta
ke
- C
heck
def
rost
(C
heck
ice
on th
eto
def
rost
ing
if th
e
- S
urfa
ce o
f fan
com
part
men
t.an
d di
scha
rgin
g po
rt o
f coo
ling
air.
)ev
apor
ator
and
pip
es a
fter
forc
edpr
oble
m is
cau
sed
by
grill
e.-
Dis
char
ging
por
t is
Clo
gged
.-
Che
ck fo
od o
ccup
atio
n ra
tio in
de
fros
ting)
.th
e fa
ulty
def
rost
ing.
- W
all o
f fre
ezer
- T
oo m
uch
food
is s
tore
d.vo
lum
e (L
ess
than
75%
).
com
part
men
t.-
Bad
def
rost
ing.
- C
heck
fros
t on
the
evap
orat
or a
fter
- C
ool a
irdi
ssem
blin
g sh
roud
and
fan
grill
e.
disc
harg
ing
port
.-
Che
ck ic
ing
at in
take
por
t of
- B
aske
t(ra
ck)
refr
iger
ator
com
part
men
t.
area
.
- F
ood
surf
ace.
2) B
ad fr
eeze
r co
mpa
rtm
ent d
oor
- C
heck
gas
ket a
ttach
men
t -
Cor
rect
the
gask
et a
ttach
emen
t-
Rep
lace
whe
n it
can
not
- Ic
ing
in th
e-
Fau
lty g
aske
tco
nditi
ons.
cond
ition
s an
d re
plac
e it.
be r
epai
red.
shut
e.-
Fau
lty a
ssem
bly
- C
heck
doo
r as
sem
bly
cond
ition
s.-
Doo
r as
sem
bly
and
repl
acem
ent.
3) O
ver
free
zing
in th
e fr
eeze
r -
Ref
riger
ator
ope
rate
s pu
ll do
wn.
-Rep
lace
def
ectiv
e pa
rts.
com
part
men
t.(C
heck
if it
is o
pera
ted
- F
aulty
MIC
OM
.in
term
itten
tly)
- T
he T
empe
ratu
re o
f fre
ezer
com
part
men
t is
satis
fact
ory,
but
over
free
zing
hap
pens
in th
e
refr
iger
ator
com
part
men
t eve
n
thou
gh th
e no
tch
is s
et a
t wea
k.
4) B
ad d
efro
stin
g.-
Che
ck fr
ost o
n th
e ev
apor
ator
afte
r-
Che
ck p
arts
rel
ated
to d
efro
stin
g.
- H
eate
r w
ire is
cut
.di
ssem
blin
g sh
roud
and
gril
le.
- C
heck
def
rost
ing.
Che
ck ic
e on
the
- F
aulty
def
rost
sen
sor.
- C
heck
ice
on th
e in
take
por
t in
the
evap
orat
or a
nd p
ipes
afte
r fo
rced
- D
efro
stin
g cy
cle
refr
iger
ator
com
part
men
t.de
fros
ting.
5) U
ser
is n
ot fa
mili
ar w
ith h
ow to
-
Che
ck fo
od h
olds
doo
r op
en.
- B
e ac
quai
nted
with
how
to u
se.
use.
- C
heck
ice
on th
e ic
e tr
ay.
- D
oor
open
s.
- H
igh
moi
stur
e fo
od w
ater
is s
tore
d.
17. S
ou
nd
TROUBLE DIAGNOSIS
- 81 -
Pro
ble
ms
Cau
ses
Ch
ecks
Mea
sure
sR
emar
ks
His
sso
und
1. L
oud
soun
d of
com
pres
sor
1.1
Che
ck th
e le
vel o
f the
1)
Mai
ntai
n ho
rizon
tal l
evel
.
oper
atio
n.re
frig
erat
or.
2) R
epla
ce b
ushi
ng a
nd s
eat i
f the
y
1.2
Che
ck th
e bu
shin
g se
at
are
sagg
ed a
nd a
ged.
cond
ition
s (s
aggi
ng a
nd a
ging
).3)
Tou
ch th
e pi
ping
at v
ario
us p
lace
alon
g its
rou
te. I
nsta
ll a
dam
per
at
2. P
ipes
res
onat
e so
und
whi
ch is
2.
1 C
heck
the
leve
l of p
ipes
the
poin
t whe
re y
our
tuch
red
uces
conn
ecte
d to
the
com
pres
sor.
conn
ecte
d to
the
com
pres
sor
the
nois
e.
and
thei
r in
terf
eren
ce.
4) A
void
pip
e in
terf
eren
ce.
2.2
Che
ck b
ushi
ng in
sert
ing
5) R
epla
ce d
efec
tive
fan
and
fan
cond
ition
s in
pip
es.
mot
or.
2.3
Tou
ch p
ipes
with
han
ds o
r sc
rew
6) A
djus
t fan
to b
e in
the
cent
er o
f
-driv
er (
chec
k th
e ch
ange
of
the
fan
guid
e.
soun
d).
7) L
eave
a c
lear
ance
bet
wee
n
inte
rfer
ing
part
s an
d se
al g
aps
in
3. F
an o
pera
tion
soun
d in
the
free
zer
3.1
Che
ck fa
n in
sert
ion
dept
h an
d th
e st
ruct
ures
.
com
part
men
t.bl
ade
dam
age.
8) R
eass
embl
e th
e pa
rts
whi
ch m
ake
3.2
Che
ck th
e in
terf
eren
ce w
ith
soun
d.
stru
ctur
es.
9) L
eave
a c
lear
ance
if e
vapo
rato
r
3.3
Che
ck fa
n m
otor
.pi
pes
and
suct
ion
pipe
touc
h
3.4
Che
ck fa
n m
otor
bus
hing
fr
eeze
r sh
roud
.
inse
rtio
n an
d ag
ing
cond
ition
s.
4. F
an o
pera
tion
soun
d in
the
4.1
Sam
e as
fan
conf
irmat
ion
in th
e
com
pres
sor
com
part
men
t.re
frig
erat
or.
4.2
Che
ck d
rip tr
ay le
g in
sert
ion.
4.3
Che
ck th
e sc
rew
fast
enin
g
cond
ition
s at
con
dens
er a
nd
drip
tray
.
TROUBLE DIAGNOSIS
- 82 -
Pro
ble
ms
Cau
ses
Ch
ecks
Mea
sure
sR
emar
ks
Vib
ratio
n so
und.
1. V
ibra
tion
of s
helv
es a
nd fo
ods
in1-
1. R
emov
e an
d re
plac
e th
e
1) R
eass
embl
e th
e vi
brat
ing
part
s
Cla
ck.
the
refr
iger
ator
.sh
elve
s in
the
refr
iger
ator
and
inse
rt fo
am o
r cu
shio
n w
here
2. P
ipes
inte
rfer
ence
and
cap
illar
y1-
2. C
heck
ligh
t foo
d an
d co
ntai
ner
vibr
atio
n is
sev
ere.
tube
touc
hing
in th
e co
mpr
esso
r.on
the
shel
ves.
2) L
eave
a c
lear
ance
whe
re p
arts
com
part
men
t.2-
1. T
ouch
pip
es in
the
com
pres
sor
inte
rfer
e w
ith e
ach
othe
r.
3. C
ompr
esso
r st
oppe
r vi
brat
ion.
com
part
men
t with
han
ds.
3) R
educ
e vi
brat
ion
with
bus
hing
4. M
ovin
g w
heel
vib
ratio
n.2-
2. C
heck
cap
illar
y tu
be to
uche
s an
d re
stra
iner
if it
is s
ever
e.
5. O
ther
str
uctu
re a
nd p
arts
co
ver
back
.(e
spec
ially
com
pres
sor
and
pipe
).
vibr
atio
n.3-
1. C
heck
com
pres
sor
stop
per
4) R
epla
ce c
ompr
esso
r st
oppe
r if
it
vibr
atio
n.vi
btat
es s
ever
ely.
4-1.
Che
ck v
ibra
tion
of fr
ont a
nd r
ear
mov
ing
whe
els.
5-1.
Tou
ch o
ther
str
uctu
res
and
part
s.
Irre
gula
r so
und.
1. It
is c
ause
d by
hea
t exp
ansi
on1-
1 C
heck
tim
e an
d pl
ace
of s
ound
1)
Exp
lain
the
prin
cipl
es o
f ref
riger
atio
n
Clic
k.an
d co
ntra
ctio
n of
eva
pora
tor,
sour
ces.
and
that
the
tem
pera
ture
diff
eren
ce
shel
ves,
and
pip
es in
the
betw
een
oper
atio
n an
d de
fros
ting
refr
iger
ator
.ca
n m
ake
soun
ds.
2) If
eva
pora
tor p
ipe
cont
acts
with
oth
er
stru
ctur
es, l
eave
a c
lear
ance
bet
wee
n
them
(fre
ezer
shr
oud
or in
ner c
ase)
.
TROUBLE DIAGNOSIS
- 83 -
Pro
ble
ms
Cau
ses
Ch
ecks
Mea
sure
sR
emar
ks
Sou
nd P
op
pin
gIt
happ
ens
whe
n re
frig
eran
t exp
ands
- C
heck
the
soun
d of
refri
gera
nt a
t the
- C
heck
the
rest
rain
er a
ttach
ed o
n th
e
(alm
ost t
he s
ame
at th
e en
d of
cap
illar
y tu
be.
initi
al in
stal
latio
n.ev
apor
ator
and
cap
illar
y tu
be w
eld
as a
nim
als
cryi
ng- C
heck
the
soun
d w
hen
the
refri
gera
tor
join
ts a
nd a
ttach
ano
ther
rest
rain
er.
soun
d).
star
ts o
pera
tion
afte
r for
ced
defro
stin
g.- I
f it i
s co
ntin
uous
and
ser
vere
, ins
ert
- Che
ck th
e re
stra
iner
atta
chm
ent
capi
llary
tube
aga
in (d
epth
15±
3mm
)
cond
ition
s on
the
evap
orat
or a
nd- F
aste
n th
e ca
pilla
ry tu
be to
suc
tion
capi
llary
tube
wel
d jo
ints
.pi
pes
or d
etac
h in
the
com
pres
sor
com
partm
ent.
- Exp
lain
the
prin
cipl
es o
f fre
ezin
g
cycl
es.
Wat
er b
oilin
g or
It ha
ppen
s w
hen
refri
gera
nt p
asse
s- C
heck
the
soun
d w
hen
com
pres
sor i
s- E
xpla
in th
e pr
inci
ples
of f
reez
ing
cycl
es
flow
ing
soun
d.or
ifice
in a
ccum
ulat
or in
tern
al p
ipes
by
turn
ed o
n.an
d re
frige
rant
flow
ing
phen
omen
on b
y
the
pres
sure
diff
eren
ce b
etw
een
- Che
ck th
e so
und
whe
n co
mpr
esso
r is
inte
rnal
pre
ssur
e di
ffere
nce.
cond
ense
r and
eva
pora
tor.
turn
ed o
ff.- I
f sou
nd is
ser
vere
, wra
p th
e
accu
mul
ator
with
foam
and
rest
rain
er.
Sou
nd o
f whi
stle
Whe
n do
or c
lose
s, th
e in
tern
al p
ress
ure
- Che
ck th
e so
und
by o
peni
ng a
nd
- Bro
aden
the
cap
of d
isch
arge
hos
e fo
r
whe
n do
or
of th
e re
frige
rato
r dec
reas
es s
harp
lycl
osin
g th
e re
frige
rato
r or f
reez
er d
oors
.de
frost
ing
in th
e co
mpr
esso
r
clos
es.
belo
w a
tom
osph
ere
and
suck
s ai
r int
oco
mpa
rtmen
t.
the
refri
gera
tor,
mak
ing
the
whi
stle
- S
eal t
he g
ap w
ith s
eala
nt b
etw
een
out
soun
d.an
d in
ner c
ases
of h
inge
in d
oor.
18. O
do
r
TROUBLE DIAGNOSIS
- 84 -
Pro
ble
ms
Cau
ses
Ch
ecks
Mea
sure
sR
emar
ks
Foo
d O
dor.
Foo
d (g
arlic
, kim
chi,
etc)
- C
heck
the
food
is n
ot w
rapp
ed.
- D
ry th
e de
odor
izer
in a
sun
ny p
lace
- C
heck
the
shel
ves
or in
ner
with
ade
quat
e ve
ntila
tion.
wal
l are
sta
ined
with
food
juic
e.-
Sto
re th
e fo
od in
the
clos
ed
- B
e su
re fo
od is
sec
urel
y co
vere
dco
ntai
ner
inst
ead
of v
inyl
wra
ps.
with
pla
stic
wra
p.-
Cle
an th
e re
frig
erat
or a
nd s
et
- C
hedk
food
cle
anlin
ess.
butto
n at
str
on
g.
Pla
stic
Odo
r.O
dors
of m
ixed
food
and
pla
stic
-
Che
ck w
et fo
od is
wra
pped
with
-
Cle
an th
e re
frig
erat
or.
odor
s.pl
astic
bow
l and
bag
.-
Per
suad
e cu
stom
ers
not t
o us
e
- It
happ
ens
in th
e ne
w r
efrig
erat
or.
plas
tic b
ag o
r w
raps
with
wet
food
or o
doro
us fo
ods.
Odo
r fr
om th
eO
dor
from
the
old
deod
oriz
er.
- C
heck
the
deod
oriz
er o
dors
.-
Dry
the
deod
oriz
er w
ith d
ryer
and
*D
eodo
rizer
: op
tion
deod
oriz
er.
then
in th
e sh
iny
and
win
dy p
lace
.
- R
emov
e an
d re
plac
e th
e
deod
oran
ts.
19. M
ico
m
TROUBLE DIAGNOSIS
- 85 -
Pro
ble
ms
Sym
pto
mC
ause
sC
hec
ksM
easu
res
Rem
arks
Bad
PC
B
All
disp
lay
Bad
con
nect
ion
Bad
con
nect
orV
isua
l che
ck o
n co
nnec
tor
Rec
onne
ct
elec
tric
pow
er.
LCD
are
off.
betw
een
Mai
n P
CB
co
nnec
tion
from
mai
n co
nnec
tion.
conn
ecto
r.
and
disp
lay
circ
uit.
PC
B to
dis
play
PC
B.
Def
ectiv
e P
CB
P
CB
tran
sfor
mer
C
heck
res
ista
nce
of P
CB
R
epla
ce P
CB
A
pplic
able
to
tran
sfor
mer
.w
indi
ng is
cut
.tr
ansf
orm
er in
put a
nd o
utpu
t tr
ansf
orm
er o
r P
CB
.m
odel
with
out
PC
B tr
ansf
orm
er
term
inal
s w
ith a
test
er.
disp
ense
r.
tem
pera
ture
fuse
is
(If r
esis
tanc
e is
infin
ity, t
rans
burn
t out
.w
indi
ng is
cut
).
Def
ectiv
ePC
B e
lect
ricD
efec
tive
regu
lato
r IC
Che
ck v
olta
ge a
t inp
ut/o
utpu
tR
epla
ce r
egul
ator
.R
efer
to e
lect
ric
circ
uit p
arts
.(7
812,
780
5).
term
inal
s.ci
rcui
t in
circ
uit
expl
anat
ion.
PC
B e
lect
ric te
rmin
alC
heck
fuse
in P
CB
ele
ctric
R
epla
ce P
CB
fuse
.
fuse
is b
urnt
out
.te
rmin
al w
ith a
test
er.
ST
R P
arts
are
C
heck
if S
TR
No.
2 a
nd 3
pin
sR
epla
ce p
arts
.A
pplic
able
to
dam
aged
.ar
e cu
t whe
n po
wer
is o
ff.m
odel
with
disp
ense
r.
Abn
orm
al
Bad
con
nect
ion
Lead
Wire
con
nect
ing
Che
ck L
ead
Wire
term
inal
s R
econ
nect
Lea
d
disp
lay
LCD
betw
een
Mai
n P
CB
m
ain
PC
B a
nd d
ispl
ayco
nnec
ting
Mai
n P
CB
and
W
ire a
nd d
irect
ly
oper
atio
nan
d di
spla
y ci
rcui
t.P
CB
is c
ut o
r co
nnec
tor
disp
lay
PC
B w
ith a
test
er.
conn
ect d
efec
tive
term
inal
con
nect
ion
isco
ntac
t ter
min
al to
bad.
Lead
Wire
.
Def
ectiv
e LC
D.
Def
ectiv
e LC
D.
Che
ck if
all
LCD
are
on
whe
n R
epla
ce d
ispl
ay
Ref
er to
dis
play
Mai
n P
CB
Tes
t sw
itch
is
PC
B.
circ
uit i
n ci
rcui
t
pres
sed
(or
whe
n bo
th fr
eeze
rex
plan
atio
n.
key
and
pow
er fr
eeze
r ke
y ar
e
pres
sed
at th
e sa
me
time
for
mor
e th
an o
ne s
econ
d.)
TROUBLE DIAGNOSIS
- 86 -
Pro
ble
ms
Sym
pto
mC
ause
sC
hec
ksM
easu
res
Rem
arks
Bad
coo
ling.
Fre
ezer
C
ompr
esso
r do
esC
ompr
esso
r Le
ad W
ireC
heck
com
pres
sor
Lead
Wire
R
econ
nect
Lea
d
tem
pera
ture
isno
t sta
rt.
is c
ut.
with
a te
ster
.W
ire.
high
.D
efec
tive
com
pres
sor
Mea
sure
vol
tage
at P
CB
CO
N2
Rep
lace
rel
ay R
Y1
Ref
er to
load
driv
ing
rela
y.(3
&9)
afte
r pr
essi
ng m
ain
PC
Ban
d R
Y2
or P
CB
.dr
ivin
g ci
rcui
t in
test
sw
itch
once
. It i
s O
K if
ci
rcui
t
volta
ge is
nor
mal
.ex
plan
atio
n.
Def
ectiv
e fr
eeze
r D
efec
tive
Fre
ezer
C
heck
res
ista
nce
of fr
eeze
r R
epla
ce fr
eeze
r R
efer
to
sens
or.
sens
or p
arts
.se
nsor
with
a te
ster
.se
nsor
.re
sist
ance
char
acte
ristic
s
tabl
e of
sen
sor
in
circ
uit.
Ref
er to
tabl
es o
n pa
ges
40, 4
1, a
nd 4
3.
The
wro
ng s
enso
rC
onfir
m th
e co
lor
of s
enso
r in
R
epai
r m
ain
PC
Bex
plan
atio
n.
has
been
inst
alle
d.ci
rcui
ts (
mai
n P
CB
sen
sor
sens
or h
ousi
ng
Ord
er b
y m
odel
num
ber
hous
ing)
.
and
part
num
ber.
Def
ectiv
e fr
eeze
r fa
nF
an m
otor
lead
wire
C
heck
fan
mot
or le
ad w
ire
Rec
onne
ct le
ad
mot
or.
is c
ut.
with
a te
ster
.w
ire.
• D
efec
tive
door
sw
itch
Mea
sure
the
volta
ge b
etw
een
• R
epla
ce d
oor
Ref
er to
load
(fre
ezer
, ref
riger
ator
,P
CB
pow
er b
lue
line
and
fan
switc
h (f
reez
er,
driv
ing
circ
uits
in
hom
e ba
r).
mot
or a
fter
pres
sing
test
sw
itch
refr
iger
ator
, and
ci
rcui
t
• D
efec
tive
fan
mot
or.
of M
ain
PC
B. I
f the
vol
tage
is
hom
e ba
r).
expl
anat
ion.
• D
efec
tive
fan
mot
orno
rmal
, it i
s O
K.
• R
epla
ce fa
n m
otor
.
driv
ing
rela
y.•
Rep
lace
rel
ay R
Y5
& R
Y6
or P
CB
.
Fau
lty d
efro
st.
Ref
er to
faul
ty d
efro
st it
ems
in tr
oubl
e di
agno
sis
Ref
er to
trou
ble
func
tions
.di
agno
sis
func
tion.
TROUBLE DIAGNOSIS
- 87 -
Pro
ble
ms
Sym
pto
mC
ause
sC
hec
ksM
easu
res
Rem
arks
Bad
coo
ling
Wro
ng
Def
ectiv
e S
tep
Mot
or
Che
ck S
tep
Mot
or
Che
ck if
Ste
p M
otor
dam
per
Rec
onne
ct le
ad
Ref
riger
ator
Dam
per.
dam
per
mot
or a
nd
mot
or a
nd r
eed
switc
h le
ad
wire
.
tem
pera
ture
.re
ed s
witc
h an
d le
ad
wire
are
cut
with
a te
ster
.
wire
are
cut
. Che
ck
Ref
er to
Ste
p M
otor
dam
per
Rep
lace
Ste
p M
otor
Ste
p M
otor
dam
per
in p
arts
rep
air
guid
e.da
mpe
r or r
efrig
erat
or
part
.co
ntro
l box
Ass
embl
y.
Che
ck S
tep
Mot
or
Ref
er to
Ste
p M
otor
dam
per
Rep
lace
rel
ay o
r R
efer
to s
ingl
e
dam
per
Mot
or d
rivin
g in
par
ts r
epai
r gu
ide.
PC
B.
mot
or d
ampe
r
rela
y in
PC
B.
driv
ing
circ
uits
in c
ircui
t
expl
anat
ion.
For
eign
mat
eria
ls in
Ste
p C
heck
Ste
p M
otor
dam
per
Rem
ove
fore
ign
Mot
or d
ampe
r ba
ffles
.ba
ffle
visu
ally
.m
ater
ials
.
Ice
form
atio
n on
C
heck
if S
tep
Mot
or d
ampe
r R
epla
ce S
tep
Mot
or
Ste
p M
otor
dam
per
Hea
ter
wire
is c
ut w
ith a
da
mpe
r or
ref
riger
ator
baffl
es.
test
er.
cont
rol B
ox A
ssem
bly.
Def
ectiv
e re
frig
erat
orD
efec
tive
refr
iger
ator
Che
ck th
e re
sist
ance
of
Rep
lace
ref
riger
ator
Ref
er to
sen
sor
sens
orse
nsor
par
ts.
refr
iger
ator
sen
sor
with
a te
ster
.se
nsor
.re
sist
ance
char
acte
ristic
tabl
e in
circ
uit
expl
anat
ion.
Ref
riger
ator
sen
sor
isC
heck
the
sens
or c
olor
in th
e R
epai
r m
ain
PC
B
subs
titut
ed fo
r ot
her
circ
uit.
(mai
n P
CB
sen
sor
sens
or h
ousi
ng.
sens
or.
hous
ing.
)
Def
ectiv
e re
frig
erat
orC
heck
if r
efrig
erat
or s
enso
rF
ix a
gain
the
sens
or a
ssem
bly
is n
ot fi
xed
at c
over
sen
sor
but
refr
iger
ator
sen
sor.
cond
ition
.in
ner
case
vis
ually
.
TROUBLE DIAGNOSIS
- 88 -
Pro
ble
ms
Sym
pto
mC
ause
sC
hec
ksM
easu
res
Rem
arks
Bad
def
rost
.D
efro
st is
not
Def
rost
lead
wire
is c
ut.
Che
ck if
def
rost
lead
wire
is c
ut w
ith a
R
econ
nect
Lea
d
wor
king
.te
ster
.W
ire.
Def
ectiv
e de
fros
t driv
ing
rela
y.C
heck
the
volta
ge o
f CO
N2
(1 a
nd 7
) R
epla
ce r
elay
(R
Y 7
Ref
er to
load
with
a te
ster
afte
r pr
essi
ng m
ain
and
RY
3)
or P
CB
.dr
ivin
g co
nditi
ons
PC
B te
st s
witc
h tw
ice.
ch
eck
in c
ircui
t
If th
e vo
ltage
is n
orm
al th
en it
is O
K.
expl
anat
ion.
Def
ectiv
e de
fros
t sen
sor
part
s.C
heck
the
resi
stan
ce o
f def
rost
sen
sor
Rep
lace
def
rost
R
efer
to s
enso
r
with
a te
ster
.se
nsor
.re
sist
ance
char
acte
ristic
tabl
e of
circ
uit
expl
anat
ion.
Def
ectiv
e B
uzze
r D
efec
tive
conn
ectin
g le
ad w
ire fr
om
Che
ck le
ad w
ire r
elat
ed to
doo
r R
epai
r le
ad w
ire.
buzz
erco
ntin
uous
lym
ain
PC
B to
doo
r sw
itch.
switc
h w
ith a
test
er.
rings
or
door
Def
ectiv
e do
or s
witc
h pa
rts.
Ref
er to
doo
r sw
itch
in p
arts
rep
air
Rep
lace
doo
r sw
itch.
open
ing
alar
m
guid
e.
does
not
wor
k.
Def
ectiv
e B
uzze
r do
es
Key
inpu
t wire
is c
ut o
r ba
d co
nnec
tor
Che
ck in
put w
ire w
ith a
test
er.
Rec
onne
ct le
ad
Ref
er to
dis
play
disp
lay
butto
nno
t sou
nd
term
inal
con
tact
in m
ain
PC
B a
nd
wire
and
rep
lace
or
circ
uit i
n ci
rcui
t
and
butto
nsdi
spla
y P
CB
con
nect
ing
lead
wire
.di
rect
ly c
onne
ct b
adex
plan
atio
n.
do n
otco
ntac
t ter
min
al to
oper
ate.
le
ad w
ire.
Key
is c
ontin
uous
ly d
epre
ssed
due
to
Dis
asse
mbl
e fr
ame
disp
lay
and
conf
irm
Adj
ust o
r re
plac
e
stru
ctur
al in
terf
eren
ce.
visu
ally
.in
terf
erin
g
stru
ctur
es.
TROUBLE DIAGNOSIS
- 89 -
Pro
ble
ms
Sym
pto
mC
ause
sC
hec
ksM
easu
res
Rem
arks
Def
ectiv
eB
uzze
r do
es
Tro
uble
mod
e in
dica
tion.
Che
ck tr
oubl
e di
agno
sis
func
tion.
Rep
air
trou
bles
Ref
er to
mod
e
disp
lay
butto
n.no
t sou
nd
indi
catio
n in
and
butto
nsfu
nctio
n
do n
ot o
pera
te.
expl
anat
ions
.
Doo
r B
uzze
rB
uzze
r D
efec
tive
conn
ectin
g le
ad w
ire fr
om
Che
ck le
ad w
ire a
ssoc
iate
d w
ith d
oor
Rep
air
lead
wire
.C
heck
mod
el
cont
inuo
usly
mai
n P
CB
to d
oor
switc
h.sw
itch.
with
dis
pens
er.
rings
or
door
Def
ectiv
e fr
eeze
r co
mpa
rtm
ent d
oor
Ref
er to
doo
r sw
itch
in p
arts
rep
air
Rep
lace
Fre
ezer
open
ing
alar
msw
itch
part
s.gu
ide.
com
part
men
t doo
r
does
not
wor
k.sw
itch.
Bad
wat
er/ic
eIc
e an
d w
ater
Def
ectiv
e co
nnec
ting
lead
wire
from
C
heck
Lea
d W
ire a
ssoc
iate
d w
ith le
ver
Rep
air
lead
wire
.
disp
ense
r.ar
e no
tM
ain
PC
B to
leve
r sw
itch.
switc
h w
ith a
test
er.
disp
ense
d.D
efec
tive
leve
r sw
itch
part
sR
efer
to d
oor
switc
h in
par
ts r
epai
r gu
ide.
Rep
lace
leve
r sw
itch.
Def
ectiv
e ph
oto
coup
ler
IC p
arts
.C
heck
vol
tage
cha
nge
at p
hoto
cou
pler
Rep
lace
pho
to
outp
ut te
rmin
als
with
leve
r sw
itch
coup
ler
IC o
r P
CB
.
pres
sed.
It is
OK
if v
olta
ge c
hang
e is
betw
een
0V
- 5
V.
Def
ectiv
e re
lay
asso
ciat
ed w
ith ic
e C
heck
rel
ay (
RY
4, R
Y5,
RY
12)
Rep
lace
def
ectiv
e
disp
ense
(ge
ared
mot
or, c
ube,
and
with
a te
ster
.re
lay.
disp
ense
r so
leno
id).
Def
ectiv
e pa
rts
asso
ciat
ed w
ith ic
e C
heck
res
ista
nce
of p
arts
with
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Cooling Cycle Heavy Repair
1. The Heavy Repair Standards for Refrigerator with R134a Refrigerant
TROUBLE DIAGNOSIS
- 90 -
NO. Items Unit Standards Purposes Remarks1 Pipe and piping Min. Pipe:within 1 hour. To protect The opening time should be reduced to a
system opening time. Comp:within Moisture half of the standards during rain and 10 minutes. Penetration. rainy seasons (the penetration of water
Drier:within into the pipe is dangerous).20 minutes.
2 Welding. Nitrogen Weld under To protect - Refer to repair note in each part.Pressure. Nitrogen oxide scale - R134a refrigerant is more susceptible to
atmosphere formation. leaks than R12 and requires more care(N2 pressure: during welding.0.1~0.2 kg/cm2) - Do not apply force to pipes before and
after welding to protect pipe from cracking.
3 N2 sealed parts. Confirm N2 Confirm air leaking To protect - In case of evaporator parts, if it doesn't leak. sounds when moisture make noise when removing bushing
removing bushing penetration. cap blow dry air or N2 gas for more than cap. 1 min use the parts.Sound:usableNo sound:not usable
4 Refrigeration Evacuation Min. More than To removeCycle. time 40 minutes. moisture.
Vacuum Torr Below 0.03(ref) Note:Only applicable to the model degree equipped with reverse flow protect
plate.Vacuum EA High and low Vacuum efficiency can be improved by
Pressure sides are operating compressor during evacuation.evacuated at thesame time formodels above 200L
Vacuum EA Use R134a To protect The bushing pipes for R12 refrigerant shall piping exclusive mixing of be melted when they are used for R134a
manifold. mineral and refrigerant causes of leak.ester oils.
Pipe EA Use R134a To protectcoupler cxclusive. R12 Refri-
gerant mixing.Outlet R134a exclusive. ˝
(Socket)Plug R134a exclusive ˝
5 Refrigerant weighing. EA Use R134a Do not mix - Do not weigh the refrigerant at too hot or exclusively. with R12 too cold an area. (25°C[77°F] is adequate.)Weighing refrigerant. - Use copper charging canister allowance:±5g Socket:2SV Plug: 2PV R134aNote:Winter:-5g Note : Do not burn O-ring (rubber) during
Summer:+5g welding.
6 Drier replacement. -Use R134a exclusively To removefor R134a refrigerator the moisture-Replace drier whenever from pipe.repairing refrigeratorcycle piping.
7 Leak check. -Do not use soapy Detect -Check oil leak at refrigerant leak area. water for check. refrigerant Use electronic leak detector if oil leak is It may be sucked leak area. not found.into the pipe. -The electronic leak detector is very
sensitive to halogen gas in the air. It also can detect R141b in urethane. Please practice, therefore, many times before use.
2. Summary Of Heavy Repair
TROUBLE DIAGNOSIS
- 91 -
Process Contents Tools
- Cut charging pipe ends and discharge refrigerant from Filter, side cutters
drier and compressor.
- Use R134a oil and refrigerant for compressor and drier Pipe Cutter, Gas welder, N2 gas
- Confirm N2 sealing and packing conditions before use.
Use good one for welding and assembly.
- Weld under nitrogen gas atmosphere. (N2 gas pressure:
0.1-0.2kg/cm2).
- Repair in a clean and dry place.
- Evacuate for more than forty minutes after connecting Vacuum pump R134a
manifold gauge hose and vacuum pump to high (drier) exclusively, Manifold gauge.
and low (compressor refrigerant discharging parts)
pressure sides.
- Evacuation Speed:113 liters/minute.
- Weigh and control the allowance of R134a charging R134a exclusive charging canister
canister in a vacuum conditions to be ±5 g with (mass cylinder), refrigerant
electronic scales and charge through compressor inlet R134a manifold gauge,
(Charge while compressor operates). electronic scales, pinch-off
- Weld carefully after pinching off the inlet pipe. plier, gas welding machine
- Check leak at weld joints. Electronic Leak Detector,
Minute leak : Use electronic leak detector Driver (Ruler).
Big leak : Check visually.
Note:Do not use soapy water for check.
- Check cooling capacity
➀ Check radiator manually to see if warm.
➁ Check hot line pipe manually to see if warm.
➂ Check frost formation on the whole surface of the
evaporator.
- Remove flux from the silver weld joints with soft brush Copper brush, Rag, Tool box
or wet rag. Flux may be the cause of corrosion and
leaks.
- Clean R134a exclusive tools and store them in a clean
tool box or in their place.
- Installation should be conducted in accordance with the
standard installation procedure. Leave space of more
than 5 cm (2 inches) from the wall for compressor
compartment cooling fan mounted model.
Troublediagnosis
Remove refrigerantResiduals
Partsreplacementand welding
Compressorcompartment
and toolsarrangement
Transportationand
installation
Checkrefrigerant leak
and coolingcapacity
Vacuum
Refrigerantcharging and
charginginlet welding
3. Precautions During Heavy Repair
TROUBLE DIAGNOSIS
- 92 -
Items Precautions
1. Use of tools. 1) Use special parts and tools for R134a.
2. Recovery of refrigerant. 1) Continue to recover the refrigerant for more than 5 minutes after turning the refrigerator off.
2) Install a piercing type valve on the high pressure line (drier side). Then use the appropriate
recovery equipment to recover the refrigerant from the system. When the refrigerant has
been recovered, install a piercing type valve on the low pressure side. IT IS IMPORTANT
TO OPEN THE SYSTEM IN THIS ORDER TO KEEP THE OIL FROM BEING FORCED OUT.
The use of piercing type valves will allow future servicing and eliminates the possibility of a
defective pinch off.
3. Replacement of drier. 1) Be sure to replace drier with R134a only when repairing pipes and injecting refrigerant.
4. Nitrogen blowing 1) Use pressurized nitrogen to prevent oxidation inside the piping.
welding. (Nitrogen pressure : 0.1~0.2 kg/cm2.)
5. Others. 1) Only nitrogen or R134a should be used when cleaning the inside of piping of the sealed
system.
2) Check leakage with an electronic leakage tester.
3) Be sure to use a pipe cutter when cutting pipes.
4) Be careful not the water let intrude into the inside of the cycle.
1
2
Compressor
Low pressure side CondenserHigh pressure side
Drier
Evaporator
Hot Line
4. Practical Work For Heavy Repair
TROUBLE DIAGNOSIS
- 93 -
Items Precautions
1. Removal of residual
refrigerant.
1) Continue to recover the refrigerant for more than 5 minutes after turning the refrigerator off.
2) Install a piercing type valve on the high pressure line (drier side). Then use the appropriate
recovery equipment to recover the refrigerant from the system. When the refrigerant has
been recovered, install a piercing type valve on the low pressure side. IT IS IMPORTANT
TO OPEN THE SYSTEM IN THIS ORDER TO KEEP THE OIL FROM BEING FORCED OUT.
The use of piercing type valves will allow future servicing and eliminates the possibility of a
defective pinch off.
2. Nitrogen blowing
welding.
When replacing a drier:
Weld and parts by blowing nitrogen (0.1~0.2kg/cm2) to high pressure side after
assembling a drier.
When replacing a compressor:
Weld and parts by blowing nitrogen to the low pressure side.
Note) For other parts, nitrogen blowing is not necessary because it does not produce oxidized
scales inside pipe because of its short welding time.
3. Replacement of drier.
Inserting a capillary tube
Measure distance with a ruler and put a mark(12+3/-0)on the capillary tube. Insert tube to the
mark and weld it
KEY POINTObserve the sequence forremoval of refrigerant.(If not, compressor oil mayleak.)
KEY POINTWelding without nitrogenblowing produces oxidizedscales inside a pipe, whichaffect performance andreliability of a product.
KEY POINTBe sure to check theinserted length of capillarytube when it is inserted. (If inserted too far, thecapillary tube will beblocked by the filter.)
Compressor
Low pressure side
CondenserHigh pressure side
Drier
Evaporator
ReleaseRefrigentIntake
Suction
Hot Line
1 2 1
2
Evaporator
Drier
High pressure sideCondenserRefrigent
Intake
Hot Line
12+3-0
Filter
* Unit : mm
TROUBLE DIAGNOSIS
- 94 -
Items Precautions
4. Vacuum degassing.
Pipe Connection
Connect the red hose to the high pressure side and the blue hose to the
low pressure side.
Vacuum Sequence
Open valves and and evacuate for 40 minutes. Close valve .
5. Refrigerant charging.
Charging sequence
1) Check the amount of refrigerant supplied to each model after completing vacuum
degassing.
2) Evacuate charging canister with a vacuum pump.
3) Measure the amount of refrigerant charged.
- Measure the weight of an evacuated charging canister with an electronic scale.
- Charge refrigerant into a charging canister and measure the weight. Calculate the weight
of refrigerant charged into the charging canister by subtracting the weight of an
evacuated charging canister.
KEY POINT- If power is applied
during vacuumdegassing, vacuumdegassing shall bemore effective.
- Run the compressorwhile charging thesystem. It is easierand works better.
KEY POINT- Be sure to charge therefrigerant at around25°C [77°F].
- Be sure to keep -5g inthe winer and +5g insummer.
the amount of refrigerant charged= weight after charging -weight before charging (weight of an evacuated cylinder)
Calculation of amount of refrigerant charged
2 1
3
Compressor
Lowpressure
Condenser
Highpressure
Drier
Evaporator
RedYellow
Blue
VacuumPump
Suction pipe
Hot Line
R134a
Indicate the weight of an evacuated charging canister
5. Standard Regulations For Heavy Repair
TROUBLE DIAGNOSIS
- 95 -
Items Precautions
4) Refrigerant Charging
Charge refrigerant while operating a compressor as shown above.
5) Pinch the charging pipe with a pinch-off plier after completion of charging.
6) Braze the end of a pinched charging pipe with copper brazer and take a gas leakage test
on the welded parts.
6. Gas-leakage test * Test for leaks on the welded or suspicious area with an electronic leakage tester.
7. Pipe arrangement When replacing components, be sure
in each cycle each pipe is replaced in its original
position before closing the cover of the
mechanical area.
Compressor
Condenser
Drier
Hot Line
Evaporator
Charging Canister
Bushing
1) Observe the safety precautions for gas handling.
2) Use JIG (or a wet towel) in order to prevent electric wires from burning during welding. (In order to prevent insulationbreak and accident.)
3) The inner case will melt and the insulation will burn.
4) The copper piping will oxidize.
5) Do not allow aluminum and copper pipes to touch. (In order to prevent corrosion.)
6) Observe that the inserted length of a capillary tube into a drier should be 12 mm.
7) Make sure that the inner diameter is not distorted while cutting a capillary tube.
8) Be sure that the suction pipe and the filling tube should not be substituted each other during welding. (High efficiencypump.)
12 mm+3-0
DrierMolecular PipeMolecular
Sieves
+3-0
6. Brazing Reference Drawings
TROUBLE DIAGNOSIS
- 96 -
PIPE ASSEMBLY, JOINT
PIPE ASSEMBLY, HOT LINE
(Freezer)
PIPE ASSEMBLY,
JOINT
CONDENSER ASSEMBLY, WIRE
PIPE ASSEMBLY, SUCTION
DRIER ASSEMBLYCAPI - TUBE
Copper BrazerCopper
Brazer
Silver Brazer
Copper
Brazer
Copper BrazerCopper Brazer Coppper Brazer
Silver Brazer
Copper
Brazer
HOW TO DEAL WITH CLAIMS
1. Sound
TROUBLE DIAGNOSIS
- 97 -
Problems Checks and Measures
Hiss sounds Explain general principles of sounds.• All refrigerators make noises when they run.
The compressor and fan produce sounds.There is a fan in the freezer compartment which blows cool air to freezer andrefrigerator compartments. Hiss sounds are heard when the air passes throughthe narrow holes into the freezer and refrigerator compartments.
Cooling Fan sound in the compressor compartment.• There is a fan on the back of the refrigerator which cools the compressor
compartment. If there is a small space between the refrigerator and the wall, theair circulation sounds may be noticeable.
Noise of Compressor.• This operating sound happens when the compressor compresses the
refrigerant. The compressor rotates at 3600 RPM. The sound of compressorlarge refrigerators make more noise than small ones
Click sounds Explain the principles of temperature change.• The sounds happens when pipes and internal evaporator in the refrigerator
compartment expand and contract as the temperature changes during therefrigerator operation. This sound also happens during defrosting, twice a day,when the ice on the evaporator melts.
Clunk sound Explain that it comes from the compressor when the refrigerator starts.• When the refrigerator operates, the piston and motor in the compressor rotate
at 3600 RPM. This sound is caused by the vibration of motor and piston whenthey start and finish their operation. This phenomenon can be compared withthat of cars. When an automobile engine starts, it is loud at first but quiets down quickly. When the engine stops, so does the vibration.
Vibration sound Check the sound whether it comes from the pipes vibration and friction.• Insert bushing or leave a space between pipes to avoid the noise.• Fix the fan blade if it is hitting on the shroud• Fix the drip tray if it is loosened.
Sound depends on the installation location.• Sound becomes louder if the refrigerator is installed on a wooden floor or near
a wooden wall. Move it to the another location.• If the refrigerator is not leveled properly, a small vibration can make a loud
sound. Please adjust the level of the refrigerator.
TROUBLE DIAGNOSIS
- 98 -
Problems Checks and Measures
Sounds of water flowing Explain the flow of refrigerant.• When the refrigerator stops, the water flowing sound happens.
This sound happens when the liquid or vapor refrigerant flows from theevaporator to compressor.
Click sounds Explain the characteristics of moving parts.• This noise comes from the MICOM controller's switch on the top of the
refrigerator when it is turned on and off.
Noise of Icemaker operation Explain the procedure and principles of Icemaker operation.(applicable to model with Icemaker). • Automatic Icemaker repeats the cycle of water supplying icemaking ice - Noise produced by ice dropping ejection. When water is supplied, the water supply valve in the machine room and hitting ice bin. makes sounds like Hiss and water flowing also makes sound. When water
- Noise from motor sounds Hiss. freezes, clicking sounds are heard. When ice is being ejected, sounds like Hissproduced by a motor to rotate an ice tray and ice dropping and hitting ice binsounds are also heard.
Noise when supplying water. Explain the principles of water supplied to dispenser.• When the water supply button in the dispenser is pressed, the water supply
valve in the compressor compartment opens and let the water flow to the watertank in the lower part of the refrigerator compartment. The water is dispensedby this pressure. When this happens, motor sound and water flowing sound areheard.
Noise when supplying ice. Explain the principles of ice supply and procedure of crushed icemaking in adispenser.• When ice cube button is pressed, ice stored in the ice bin is moved by an auger
and dispensed. If crushed ice button is pressed, the ice cube is crushed. When this happens, ice crushing and hitting ice bin sounds are heard.
2. Measures for Symptoms on Temperature
TROUBLE DIAGNOSIS
- 99 -
Problems Checks and Measures
Refrigeration is weak. Check temperature set in the temperature control knob.• Refrigerator is generally delivered with the button set at normal use (MID).
But customer can adjust the temperature set depending on their habit and taste.If you feel the refrigeration is weak, then set the temperature control button atstrong position. If you adjust the button in the freezer compartment as well, the refrigeration is stronger than adjusting refrigerator only.
The food in the chilled drawer is The chilled drawer does not freeze food.not frozen but defrosted • Use chilled drawer for storing fresh meat or fish for short periods. For storing for
a long period or freezing food, use a freezer compartment. It is normal thatfrozen foods thaw above the freezing temperature (in the chilled drawer).
Refrigerator water is not cool. Check the water storage location.• If water is kept in the door rack, move it to a refrigerator shelf. It will then
become cooler.
Ice cream softens. Explain the characteristics of ice cream.• The freezing point of ice cream is below -15°C[5°F]. Therefore ice cream may
melt if it is stored in the door rack.• Store ice cream in a cold place or set the temperature control button of a freezer
at strong position.
Refrigeration is too strong. Check the position of temperature control button.• Check if refrigeration is strong in whole area of the refrigerator or partly near the
outlet of the cooling air. If it is strong in whole area, set the control button atweak. If it is strong only near the outlet of cool air, keep food (especially dampfoods and easily frozen foods) away from the outlet.
Vegetables are frozen. Check the vegetables storage.• If vegetables are stored in the refrigerator shelf or chilled drawer instead of
vegetable drawer, they will be frozen. Set the control button at weak if they arealso frozen in the vegetable drawer.
The food stored at inside of Check if food is stored near the outlet of the cooling air. the shelf freezes even the • The temperature at cooling air outlet is always below the freezing point. control button is set at MID. Do not store food near the outlet of the cooling air as it block the air circulation.
Do not block the outlet. If the outlet of the cooling air is blocked, the refrigeratorcompartment will not be cooled.
3. Odor and Frost
TROUBLE DIAGNOSIS
- 100 -
Problems Checks and Measures
Odor in the refrigerator compartment. Explain the basic principles of food odor.• Each food has its own particular odor. Therefore it is impossible to prevent or
avoid food odor completely when food is stored in the completely sealedrefrigerator compartment. The deodorizer can absorb some portions of the odorbut not completely. The intensity of odor depends on refrigerator conditions andenvironments.
Check the temperature control button and set at strong.• Clean inside of the refrigerator with detergent and remove moisture. Dry inside
the refrigerator by opening the door for about 3 or 4 hours and then set thetemperature control button at strong.
Frost in the freezer compartment Explain the basic principles of frost formation.• The main causes for frosting:
- Door was left open.- Air penetration through the gasket- Too frequent door opening. (parties. etc.)- Hot foods are stored before they are cooled down. The temperature of freezer
is -19°C[-2.2°F]. if temperature is set at MID. If hot air comes into therefrigerator, fine frost forms as cold air mixes with hot air. If this happens quiteoften, much frost forms inside of the refrigerator. If the door is left open inSummer, ice may form inside of the refrigerator.
Frost in ice tray. Explain basic principles of frost formation.• When ice tray with full of water is put into a freezer compartment, the water
evaporates. If cool air fan operates, the moisture attached to the jaw (protrudedpart) of ice mold will freeze and form frost. If warm water was put into the icemold, the situation will become worse.
4. Others
TROUBLE DIAGNOSIS
- 101 -
Problems Checks and Measures
The refrigerator case is hot. Explain the principles of radiator.• The radiator pipes are installed in the refrigerator case and partition plate
between the refrigerator and the freezer compartment in order to preventcondensation formation. Particularly in summer or after installation ofrefrigerator, it may feel hot but it is normal. If there is not enough space todissipate heat, it can be hotter due to lack of heat radiation. Please install arefrigerator in a well-ventilated place and leave the clearance betweenrefrigerator and wall:
Small holes in a door liner Explain that the hole is for releasing gas.• A small hole in the door liner is for releasing gas during insulation materials
lining work. With a releasing hole, forming can be easily done .
Electric bills are too much. Explain that the hole is to allow the air to escape when vacuum forming plasticparts and pumping foam insulation into cavities. NOTE! Holes and releasing gas appear to be very crude and would not be
acceptable in a manual.There are small holes in the plastic liner of some parts of the refrigerator. These holes allow plastic parts to be injection molded and vacuum formed by allowing air bubbles to be expelled. They also allow foam insulation to be pumped into cavities where air bubbles may build up.
Condensation on the inside Explain how to store foodswall of the refrigerator • Condensation forms when refrigerator is installed at damp area, door is compartment and the cover of frequently opened, and wet foods are not stored in the air tight container orproperly vegetable drawer. wrapped. Be sure to store wet foods in airtight containers or securely covered in
plastic wrap.
When is the power connected? When should the power be connected ?• You can connect the power immediately after installation. However, if the
refrigerator was laid flat before or during installation, you must stand it uprightfor 6 hours before plugging it in. This allows the refrigerant oils to return to thesump in the compressor. If you operate the refrigerator before the oil has had achance to settle, you could damage the compressor.
Door does not open properly. Refrigerator compartment door does not open properly.• When the door is open, warm open air comes into the compartment and is mixed up with cool air. This mixed air shall be compressed and increase theinternal pressure when door is closed. This causes the door sticked closely tothe refrigerator in a moment. (If the refrigerator is used for a long time, it willopen smoothly.)
When the refrigerator compartment door is opened and closed, the freezercompartment door moves up and down.• When the refrigerator compartment door is opened and closed, fresh air comes into
the freezer compartment and moves up and down the freezer compartment door.
Door opens too easily.• There is a magnet in the gasket so it closes securely without a gap. It can be
held open easily if something is in the way and obstructs the door’s closing.
A door does not close properly. • If the refrigerator is not properly leveled, the doors will not close easily. Adjust
the level using the leveling screws under the front of the refrigerator.
The front side shouldbe a little bit higherthan the rear side.
TROUBLE DIAGNOSIS
- 102 -
1. DOOR
1) Remove lower cover and then disconnect watersupply tube in the lower part of freezer door.
• Pull the water supply tube forward while pressing onthe coupling as shown in the drawing.
w Disconnecting the tube under the door causes about1.5 litters water to flow out. Please put up a bigcontainer to prevent it.
2) Remove a freezer door.(1) Loosen hinge cover screw of freezer door and remove
cover. Disconnect all connecting lines except grounding cord.
(2) Turn hinge lever in arrow A direction until it isloosened and take it out in arrow B direction.
Note : • When disconnecting refrigerator door, turn hingelever counterclockwise.
• If the hinge or bracket are bent during assembly,use two extra screws (Tap Tite M6, Left Hingeattaching screw) in the holes of the upper hinge.
(3) Disconnect upper hinge from the hinge supporter by grasping the front part of upper hinge and lifting up(Hinge Assembly, U) in arrow direction A and pullforward in arrow B direction. Be careful because thedoor may fall, damaging the door, the floor, or injuringyou.
(4) Lift up the freezer door in arrow direction anddisconnect the door from the lower hinge . Don’t pullthe door forward.
Note : • Lift up the freezer door until a water supply tube isfully taken out.
(5) Assembly is the reverse order of disassembly
HOW TO DISASSEMBLE AND ASSEMBLE
- 103 -
2
1A A B
1
2
1
2
2Connecting
Line
EarthingCord
Hinge Cover
Hinge Lever
A
B
2. HANDLE
1. Aluminum Handle Model1) Use a small screwdriver blade in the groove at the side
of the Deco Handle to lift and separate the cover. Twistdown in the direction of arrow and lift the cover in thedirection of arrow .
2) Use a small screwdriver blade in the groove at the sideof the Deco Handle to lift and separate the cover. Twistdown in the direction of arrow and lift the cover in thedirection of arrow .
3) Push the handle piece in the direction of the arrowand disconnect it.
4) Turn screw in arrow direction with a philips driver anddisconnect.
2. Plastic handle Model1) Use a small screwdriver blade in the groove at the side of
the Deco Handle to push it down slightly and separate thecover. Push down in the direction of arrow and pushthe cover down in the direction of arrow .
2) Turn screw in arrow direction with a cross driver andlift up a little bit in arrow and pull it up in arrow .
HOW TO DISASSEMBLE AND ASSEMBLE
- 104 -
1
Deco Handle
2
3
4
1
2
Screw
1
2
3
Handle Piece
Screw
3. Fan Shroud Grille1) Loosen two screws after disconnecting a cap screw of a
grille fan (U) with a screwdriver balde.
2) Disassembly of a grille fan (U) : Pull forward afteropening hook at part with a screwdriver blade.
3) Disconnect housing A of a grille fan (L) from the mainbody.
4) Disassembly of a grille fan (L) : Hold upper part of agrille fan (L) and pull forward carefully.
5) Loosen two screws.
6) Disassembly of shroud. F (U) : Disconnect housing of Bafter removing two rail guides with a screwdriver blade.
7) Disassembly of shroud. F (U) : Hold upper part and pullforward.
8) Check foam sticking conditions around a shroud, F (U)and F (L) during assembling. If damaged, torn, or badlystuck, assemble with a new one after sealing well.
4. ICEMAKER ASSEMBLY
1. Dispenser Model1) How to disassemble:
(1) Remove ice bin and shelf from the freezercompartment.
(2) Loosen four screws under part of icemaker.
(3) Disconnect icemaker housing.
(4) Loosen a screw on the bracket and lift up the Icemaker.
2) How to assemble:The assembly is the reverse order ofthe above disassembly.
Note : When the ice tray is not horizontal after assembly,assembly must be wrong. Check and assembleagain.
HOW TO DISASSEMBLE AND ASSEMBLE
- 105 -
5. DISPENSER1) Disconnect funnel and button assembly by pulling down
and forward.
2) Remove display frame Assembly by making a gapbetween a display frame Assembly and funnelAssembly. with a balde screwdriver and pulling itforward. The cover dispenser is attached with a hook.
3) The Display Assembly can be connected by pressingthe top of the dispenser cover and pushing it afterseparating the Display Frame from its housing.
4) Loosen four screws with a phillips screwdriver and pullthe funnel Assembly to disconnect.
5) The Duct Cap Assembly can be disconnected if the holdlever connecting screw is loosened with a phillips driver.
6) To install the Duct Cap Assembly, insert one end of thespring into the right hole of the dispenser lever andinsert the other end into the right hole in the top part ofthe dispenser. Then attach the holder at the solenoidswitch.
HOW TO DISASSEMBLE AND ASSEMBLE
- 106 -
Button
Funnel Assembly
Funnel
Assembly
HolderLever
Solenoid Assembly
Cap Assembly,Duct
Spring
Sheet Heater
Dispenser Lever
Solenoid Assembly
1. SAFETY PRECAUTIONS
1-1. Warning1. Be sure to make a safety check, if circuit is found,
components that appear to have overheated or areotherwise damaged should be replaced with newcomponents.
2. After servicing, be sure that the protected equipment isassembled.
3. When you don’t watch TV, use the POWER button turn itoff.
1-2. Notes1. When inserting the instrument or circuit board, fix the
leads to the jack, before soldering.
2. Insert higher voltage resistors with a 10mm gap abovethe PWB.
3. Don’t touch hot chassis leads.
2. FEATURE
2-1. Auto Program tuningAll stations that can be received are stored.
2-2. Auto SleepTV will automatically switch itself to standby modeapproximately ten minutes after TV station stopsbroadcasting.
2-3. Auto Search (FM RADIO)Press the TV/RADIO button and then hold CH or CH
button for more than 1 second to select RADIO Menu.
TV-RADIO
- 107 -
3. CONTROLS
TV-RADIO
- 108 -
MENU ENTER VOL TV/RADIO POWERCHA/TUN
MENU/PRESET ENTER/MEMORY VOLUME TV/RADIO POWERCH/TUNE
Menu/Preset Button
Enter/Memory Button TV/Radio Button
Remote Control Sensor
Power/Standby IndicatorGlows red in Standby mode,
Glows green when the TV is turned on.
Channel/Tune Button Volume Button
Power Button Antenna Jack
MHz
4. REMOTE CONTROL KEY FUNCTIONS
- When using the remote control, aim it at the remote control sensor on the TV.
TV-RADIO
- 109 -
powertv/radio
mute mts
fcr
ch
ch
volentermem
1 2 3
4 5 6
7 8 9
0
vol
exit menu
preset
dasp
flashbkcc sleep
apc
MUTESwitches the sound on or off.
ENTER/MEM
CH / (Channel button)
VOL / (Volume button)
POWER
MTS
EXIT
MENUPRESET
APC
SLEEP
FLASHBKPress the FLASHBK button to
Lets you select the amount of time beforeyour TV turns itself off automatically.
Adjusts the factory preset pictureaccording to the room.
Activates the on-screen menu, togglesthrough the menus, and toggles throughpreset radio station.
Selects MTS sound: Mono, Stereo, or SAP.
return to the last channel you werewatching.
• Open the battery compartment cover on the back side and insert the batteries with correct polarity.
• Install two 1.5V batteries of AAA type. Don't mix used batteries with new batteries.
DASP
CC
TV/RADIOSelects: TV or Radio.
FCR
NUMBER buttons
Installing Batteries
Use to scroll the Favorite channel list.
Selects the sound appropriate for the program's character.
Select a closed caption:Off, EZ Mute, or On.
5. TROUBLESHOOTING
5-1. General
5-2. TV
5-3. FM Radio
TV-RADIO
- 110 -
No. Poor Symptoms Adjustment
1
2
No Picture
Poor Picture
1) No P1, P51, P52, P53, P54 connector
2) Poor TV Main PCB
1) Poor LCD Lamp
2) LCD Connector
1) Check P1 connector and switched on
2) Change the TV Main PCB
1) Change the LCD
2) Check connector and switched on
No. Poor Symptoms Adjustment
1
2
No Sound
Poor Display LCD
1) Poor FM Radio Tuner
1) Poor Text Display
2) No Backlight
1) Charge FM Radio Tuner.
1, 2) Charge FM Radio LCD ASSEMBLY
& Check Connector
No. Poor Symptoms Adjustment
1
2
3
4
5
No Sound
Poor Radiant heat
Fan
No TV broadcast
Button does not
work
Remote Control
does not work
1) No P601, P602 connector
2) Poor speaker
3) Poor TV Main PCB
1) Fan turning abrades wire and tape.
2) Poor Fan
1) No TV connection
(Hinge Cover, Back TV)
1) No P101 connector
2) Poor switch
1) No P101 connector
2) Poor Remote Control sensor
3) Poor Remote Control
1) Check connector and switched on
2) Change the speaker
3) Change the TV Main PCB
1) Detach Fan and remove the
interference.
2) Change the Fan
1) Check connection and switch on
1) Check connector and switch on
2) Change the Button PCB
1) Check connector and switched on
2) Change the Button PCB
3) Change the Remote Control
6. BLOCK DIAGRAM
TV-RADIO
- 111 -
7. TV PART DISASSEMBLE
TV-RADIO
- 112 -
Place tape on the outer edge of the TV case toprotect the soft plastic from damage (2 or 3 layers isrecommended).
❶
Using a flat bladed screwdriver, carefully pry the trimloose from the frame.
❷
Carefully remove the trim.
❸
Remove two phillips head screws located at the topof the TV.
❹
Tip the TV forward and disconnect all wires.
❺
Carefully remove the TV.
❻
DISPENSER RELATED PARTS
EXPLODED VIEWS
- 113 -
1821
19
7
8
11
14
17 15
16
277A
9
10
2325
22
4
1
2
24
11
1 FRAME ASSEMBLY, DISPLAY
2 DISPENSER COVER
4 PWB(PCB) ASSEMBLY, DISPLAY
7 FUNNEL ASSEMBLY
8 MICRO SWITCH
9 FUNNEL FRAME
10 LEVER(SWITCH)
11 FUNNEL
12 FUNNEL GUIDE
13 ROCKER SWITCH
14 SOLENOID ASSEMBLY
15 SPRING
16 LEVER HOLDER
17 DUCT CAP
19 DISPENSER LEVER
20 BUSHNIG CAP
21 BUTTON ASSEMBLY
22 BUTTON
23 BUTTON HOLDER
24 DRAIN GRILLE
17 Cap Assembly, Duct Detailed Drawings
FREEZER DOOR PART: LRSC26920**, LRSC26922**, LRSC26930**, LRSC26944**, LRSC26980TT
* : Optional part
EXPLODED VIEWS
- 114 -
202A
200A
210A
203A201A
210B
210C
205F
205B
205E
205A
205C
205D
210B*
*
REFRIGERATOR DOOR PART: LRSC26920**, LRSC26922**, LRSC26930**, LRSC26944**
* : Optional part
EXPLODED VIEWS
- 115 -
240A
232A
240C
233A
230A
239A
231A
241B
241C
241A
205F
205B
205E
205A
205C
205D
243A
242D
147A
147B
147C*
242C
242A
242B
242D
242C
242A
242B
*
REFRIGERATOR DOOR PART: LRSC26980TT
* : Optional part
EXPLODED VIEWS
- 116 -
240A
232A
240C
233A
230A
239A
231A
241B
241C
241A
243A
240A
242D
147A
147B
147C*
242C
242A
242B
205F
205B
205E
205A
205C
205D
260B
238A
FREEZER COMPARTMENT: LRSC26920**, LRSC26922**, LRSC26930**, LRSC26944**,LRSC26980TT
* : Optional part
EXPLODED VIEWS
- 117 -
271B271A
103A
400A
312A
152A
128C*
128D*
128D
128F
128H
128C
128E
128G
403C139B
105B
272A
135B
137A
136D
329A
135A136B403A
136C
401A
408A
302B
130A
126A
125A
121A
120C
403D
127B
120B
270A
402A
*
*
*
*
*
*
*
*
*
*
*
*
270C
REFRIGERATOR COMPARTMENT: LRSC26920**, LRSC26922**, LRSC26930**, LRSC26944**
* : Optional part
EXPLODED VIEWS
- 118 -
271B
271C
145A
145A
103A
152A
152A
177A
170A
166B
166A
165A
272B
155A
146A
146B*
177B
166B
150B
409B
116A
401A
115A
150A
168A
120E
162A
162B
142D
142A
270D
402A
270B
151A
171B
171A
141C
141B
140A
140C
140B
142C
142B
624D
624B
624C
624A
504A
167A
167B
167C
*
*
**
*
*
*
*
*
141A
REFRIGERATOR COMPARTMENT: LRSC26980TT
* : Optional part
EXPLODED VIEWS
- 119 -
271B
271C
145A
145A
103A
152A
152A
177A
170A
166B
166A
165A
272B
155A
146A
146B*
177B
166B
150B
409B
116A
401A
115A
150A
168A
120E
162A
162B
142D
142A
151A
171B
171A
141C
141B
140A
140C
140B
142C
142B
624D
624B
624C
624A
504A
167A
167B
167C
*
*
**
*
*
*
*
*
141A
270D
207B
402A
270B
ICE & WATER PART: LRSC26920**, LRSC26922**, LRSC26930**, LRSC26944**, LRSC26980TT
* : Optional part
EXPLODED VIEWS
- 120 -
614A
613A
600B
606A
610A
621B
600A
612A
612B
612C
616E
618A
616D
404A
625A
616G
621C
616F
611B
611A
611C
611D
404B
627A
619A
MACHINE COMPARTMENT: LRSC26920**, LRSC26922**, LRSC26930**, LRSC26944**,LRSC26980TT
* : Optional part
EXPLODED VIEWS
- 121 -
300A310B
307A
304A
306A
310A
317B
317A
305C 305B
313A
301A
307A
104A
305C
305B
303C
303B
303D
303A
305A
500A
502B
411A
101B
101A
308A308C
308B
309B
403B
309C
309A
502A
410G
410H
DISPENSER PART: LRSC26920**, LRSC26922**, LRSC26930**, LRSC26944**, LRSC26980TT
* : Optional part
EXPLODED VIEWS
- 122 -
278A
402C
405A
275A 276A
275C
275B
401C
275D
276B
277A
278B
278C
280C280G
280B
501A*
279D
279A
279B
279C
280E
280D
279E
278F
281A
280F
278G
FREEZER DOOR PART: LRSC26910**, LRSC26911**
EXPLODED VIEWS
- 123 -
202A
200A
210A
203A201A
210C
210C
210C
205C
205A
205E
REFRIGERATOR DOOR PART: LRSC26910**, LRSC26911**
EXPLODED VIEWS
- 124 -
240A
232A
240C
147A
233A
230A
239A
231A
241B
241C
241A
243A
240A
243A
240A
205D
205B
205E
FREEZER COMPARTMENT: LRSC26910**, LRSC26911**
EXPLODED VIEWS
- 125 -
271B
270C
271A
103A
400A
312A
152A
128C*
128D*
128D
128F
128C
128E
105B
272A
135B
137A
136D
329A
135A136B403A
136C
401A
408A
302B
130A
126A*
*
*
125A
120C
120B
120B
270A
402A
REFRIGERATOR COMPARTMENT: LRSC26910**, LRSC26911**
EXPLODED VIEWS
- 126 -
166B
160A
271B
271C
145A
145A
103A
152A
177A
170A
166B
166A
165A
272B
155A*
177B
166B
150B
409B
116A
401A*
115A
150A
140C
140D140A
140C
140D140A
162A
162B
270D
402A
270B
151A
141A
171B
171A
141C
141B
624D
624B
624C
624A
ICE & WATER PART: LRSC26910**, LRSC26911**
EXPLODED VIEWS
- 127 -
614A
613A
600B
606A
610A
621B
600A
612A
612B
612C
616E
618A
616D
404A
625A
616G
621C
616F
611B
611A
611C
611D
404B
627A
619A
MECHANICAL COMPARTMENT: LRSC26910**, LRSC26911**
EXPLODED VIEWS
- 128 -
300A310B
307A
304A
306A
310A
317B
317A
305C 305B
313A
301A
306C
307A
104A
305C
305B
303C
303B
303D
303A
305A
308A308C
308B
309B
403B
309C
309A
500A
502B
411A
502A
410G
410H
101B
101A
DISPENSER PART: LRSC26910**, LRSC26911**
EXPLODED VIEWS
- 129 -
278A
402C
278G
405A
275A 276A
275C
275B
401C
275D
276B
277A
278B
278C
280C280G
280B
501A*
279D
279A
279B
279C
280E
280D
279E
278F
281A
280F
278G
TV PART: LRSC26980TT
EXPLODED VIEWS
- 130 -
628C
628A
628B
628U62
8T
628R
628P
628Q
628S
628E
628F
628D
628L
628J
628H
628I
628G
628K
pow
ertv
/radi
o
mut
em
ts
fcr
ch ch
vol
enter
mem
12
3
45
6
78
9
0
vol
exit
men
u
pres
et
dasp
flash
bkcc
slee
p
apc
628U
628V
P/No. 3828JD8646A FEB., 2004 Printed in Korea