LG LRSC26944SW User manual
CAUTION
PLEASE READ CAREFULLY THE SAFETY PRECAUTIONS OF THIS MANUAL
BEFORE CHECKING OR OPERATING THE REFRIGERATOR.
REFRIGERATOR
SERVICE MANUAL
LRSC26944SW, LRSC26944TT
LRSC26930SW, LRSC26930TT
LRSC26922SW, LRSC26922TT
LRSC26920SW, LRSC26920TT
LRSC26911SW, LRSC26911TT
LRSC26910SW, LRSC26910TT
LRSC26980SB, 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 the
refrigerator safely and correctly and to prevent accident or
injury when servicing.
1. Be careful of an electric shock. Disconnect power cord
from wall outlet and wait for more than three minutes
before replacing PWB parts. Disconnect the power
whenever replacing and repairing electric components.
2. If disconnecting the power, wait at least 5 minutes
before plugging the unit back in.
3. Before touching the power cord, make sure the cord is
not damaged. If the power cord is damaged, it can
cause 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 housing
and connecting parts.
8. Do not fray, damage, run over, kink, bend, pull out, or
twist the power cord.
9. Please check for evidence of moisture intrusion in the
electrical components. Replace the parts or mask with
insulation tape if moisture intrusion is confirmed.
10. Stay clear of the icemaker with hands or tools if the unit
has power. Do not try to manually turn the ice maker
even when turned off.
11. Customers should not repair the refrigerator
themselves. This work requires special tools and
knowledge. 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. The
contents will freeze and break the bottles.
15. If you scrap or discard the refrigerator, remove the
doors and dispose of it where children are not likely to
play 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 (3511/16
X
355/16
X
6911/16 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) (61/2oz.)
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 (281/2in.)
1004 mm (391/2in.)
908 mm (353/4in.)
779 mm (305/8in.)
829 mm (325/8in.)
897 mm (355/16 in.)
1261 mm (495/8in.)
1741.5 mm (681/2in.)
1746.5 mm (683/4in.)
1771 mm (6911/16 in.)
1771 mm (6911/16 in.)
Front View Top View
Ref No. : LRSC26944**
SPECIFICATIONS
- 5 -
724 mm (281/2in.)
1004 mm (391/2in.)
908 mm (353/4in.)
779 mm (305/8in.)
829 mm (325/8in.)
897 mm (355/16 in.)
1261 mm (495/8in.)
1741.5 mm (681/2in.)
1746.5 mm (683/4in.)
1771 mm (6911/16 in.)
1771 mm (6911/16 in.)
Ref No. : LRSC26930**
ITEMS SPECIFICATIONS
DIMENSIONS 908
X
896
X
1771 mm
W
X
D
X
H (3511/16
X
355/16
X
6911/16 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) (61/2oz.)
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 (3511/16
X
355/16
X
6911/16 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) (61/2oz.)
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 (281/2in.)
1004 mm (391/2in.)
908 mm (353/4in.)
779 mm (305/8in.)
829 mm (325/8in.)
897 mm (355/16 in.)
1261 mm (495/8in.)
1741.5 mm (681/2in.)
1746.5 mm (683/4in.)
1771 mm (6911/16 in.)
1771 mm (6911/16 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 (3511/16
X
355/16
X
6911/16 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) (61/2oz.)
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 (281/2in.)
1004 mm (391/2in.)
908 mm (353/4in.)
779 mm (305/8in.)
829 mm (325/8in.)
892 mm (351/8in.)
1261 mm (495/8in.)
1741.5 mm (681/2in.)
1746.5 mm (683/4in.)
1771 mm (6911/16 in.)
1771 mm (6911/16 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 (3511/16
X
355/16
X
6911/16 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) (61/2oz.)
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 (281/2in.)
1004 mm (391/2in.)
908 mm (353/4in.)
779 mm (305/8in.)
829 mm (325/8in.)
897 mm (355/16 in.)
1261 mm (495/8in.)
1741.5 mm (681/2in.)
1746.5 mm (683/4in.)
1771 mm (6911/16 in.)
1771 mm (6911/16 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
Automatic
Icemaker
Door Rack
Shelf
Door Rack
Bottle Guide
Display Panel
Dispenser Lamp
Ice & Water
Dispenser 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
Automatic
Icemaker
Door Rack
Shelf
Bottle Guide
Display Panel
Dispenser Lamp
Ice & Water
Dispenser Button
OptiChill Display
Door Rack
Water Filter
PCB Cover
Water Tubes
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