LG GR-B197WVS User manual

CAUTION
PLEASE READ CAREFULLY THE SAFETY PRECAUTIONS OF THIS BOOK
BEFORE CHECKING OR OPERATING THE REFRIGERATOR.
REFRIGERATOR
SERVICE MANUAL
MODEL: GR-B197WVS
COLOR: SUPER WHITE
http://biz.lgservice.com
Ref. No.
GR-B197GVCA

WARNINGS AND PRECAUTIONS FOR SAFETY ................................................................................................................ 3
SPECIFICATIONS................................................................................................................................................................... 4
PARTS IDENTIFICATION..................................................................................................................................................... 17
HOW TO INSTALL THE REFRIGERATOR.......................................................................................................................... 25
HOW TO ADJUST DOOR HEIGHT OF THE REFRIGERATOR........................................................................................ 25
HOW TO INSTALL WATER PIPE........................................................................................................................................26
HOW TO CONTROL THE AMOUNT OF WATER SUPPLIED TO THE ICEMAKER......................................................... 30
MICOM FUNCTION .............................................................................................................................................................. 32
MICOM CIRCUIT DESCRIPTION......................................................................................................................................... 38
DESCRIPTION OF PWB CIRCUIT
SENSOR RESISTANCE CHARACTERISTIC TABIE
PWB PARTS DRAWING AND LIST
PWB CIRCUIT DRAWING
ICE MAKER AND DISPENSER WORKING PRINCIPLES AND REPAIR ...........................................................................60
WORKING PRINCIPLES
FUNCTION OF ICE MAKER
ICE MAKER TROUBLESHOOTING
ICE MAKER CIRCUITS
CIRCUIT................................................................................................................................................................................ 65
TROUBLE DIAGNOSIS........................................................................................................................................................ 67
TROUBLE SHOOTING ...................................................................................................................................................... 67
FAULTS .............................................................................................................................................................................. 77
COOLING CYCLE HEAVY REPAIR................................................................................................................................... 94
HOW TO DEAL WITH CLAIMS........................................................................................................................................ 101
HOW TO DISASSEMBLE AND ASSEMBLE..................................................................................................................... 106
DOOR............................................................................................................................................................................... 106
HANDLE........................................................................................................................................................................... 107
SHROUD, GRILLE FAN................................................................................................................................................... 107
ICEMAKER....................................................................................................................................................................... 107
DISPENSER..................................................................................................................................................................... 108
WATER TANK AND WATER LINE.................................................................................................................................... 110
HOME BAR....................................................................................................................................................................... 110
EXPLODED VIEW............................................................................................................................................................... 111
REPLACEMENT PARTS LIST ........................................................................................................................................... 120
CONTENTS
- 2 -

Please observe the following safety precautions in order to
use safely and correctly the refrigerator and to prevent
accident and danger during repair.
1. Be care of an electric shock. Disconnect power cord
from wall outlet and wait for more than three minutes
before replacing PWB parts. Shut off the power
whenever replacing and repairing electric components.
2. When connecting power cord, please wait for more than
five minutes after power cord was disconnected from the
wall outlet.
3. Please check if the power plug is pressed down by the
refrigerator against the wall. If the power plug was
damaged, it may cause fire or electric shock.
4. If the wall outlet is over loaded, it may cause fire. Please
use its own individual electrical outlet for the refrigerator.
5. Please make sure the outlet is properly earthed,
particularly in wet or damp area.
6. Use standard electrical components when replacing
them.
7. Make sure the hook is correctly engaged.
Remove dust and foreign materials from the housing
and connecting parts.
8. Do not fray, damage, machine, heavily bend, pull out,
or twist the power cord.
9. Please check the evidence of moisture intrusion in the
electrical components. Replace the parts or mask it
with insulation tapes if moisture intrusion was
confirmed.
10. Do not touch the icemaker with hands or tools to
confirm the operation of geared motor.
11. Do not let the customers repair, disassemble, and
reconstruct the refrigerator for themselves. It may
cause accident, electric shock, or fire.
12. Do not store flammable materials such as ether,
benzene, alcohol, chemicals, gas, or medicine in the
refrigerator.
13. Do not put flower vase, cup, cosmetics, chemicals,
etc., or container with full of water on the top of the
refrigerator.
14. Do not put glass bottles with full of water into the
freezer. The contents shall freeze and break the glass
bottles.
15. When you scrap the refrigerator, please disconnect the
door gasket first and scrap it where children are not
accessible.
WARNINGS AND PRECAUTIONS FOR SAFETY
- 3 -

SPECIFICATIONS
- 4 -
ITEMS SPECIFICATIONS
DIMENSIONS (mm) 890(W) X 840(D) X 1750(H)
NET WEIGHT (kg) 128
COOLING SYSTEM Fan Cooling
TEMPERATURE CONTROL Micom Control
DEFROSTING SYSTEM Full Automatic
Heater Defrost
INSULATION Cyclo-Pentane
COMPRESSOR P.T.C. Starting Type
EVAPORATOR Fin Tube Type
CONDENSER Wire Condenser
REFRIGERANT R134a (180g)
LUBRICATING OIL FREOL @10G (310 cc)
CAPILLARY TUBE ID 0.83
DRIER MOLECULAR SIEVE XH-7
ITEMS SPECIFICATIONS
FIRST DEFROST 4 - 5 Hours
DEFROST CYCLE 13 - 15 Hours
DEFROSTING DEVICE Heater, Sheath
ANTI SWEAT HEATER Dispenser Duct Door Heater
Dispenser Heater
Home Bar Heater
ANTI-FREEZING HEATER Water Injection Heater
Damper Heater
FREEZER LAMP 40W (1 EA)
REFRIGERATOR LAMP 40W (1 EA)
DISPENSER LAMP 15W (1 EA)
1750 1720 1750
685
948
890
745
796
840
1218.5
<Front View> <Plane View>
1. Ref No. : GR-P247

SPECIFICATIONS
- 5 -
ITEMS SPECIFICATIONS
DIMENSIONS (mm) 890(W) X 755(D) X 1750(H)
NET WEIGHT (kg) 123
COOLING SYSTEM Fan Cooling
TEMPERATURE CONTROL Micom Control
DEFROSTING SYSTEM Full Automatic
Heater Defrost
INSULATION Cyclo-Pentane
COMPRESSOR P.T.C. Starting Type
EVAPORATOR Fin Tube Type
CONDENSER Wire Condenser
REFRIGERANT R134a (180g)
LUBRICATING OIL FREOL @10G (310 cc)
CAPILLARY TUBE ID 0.83
DRIER MOLECULAR SIEVE XH-7
1750 1720 1750
600
948
890
660
711
755
1133.5
<Front View> <Plane View>
2. Ref No. : GR-P207
ITEMS SPECIFICATIONS
FIRST DEFROST 4 - 5 Hours
DEFROST CYCLE 13 - 15 Hours
DEFROSTING DEVICE Heater, Sheath
ANTI SWEAT HEATER Dispenser Duct Door Heater
Dispenser Heater
Home Bar Heater
ANTI-FREEZING HEATER Water Injection Heater
Damper Heater
FREEZER LAMP 40W (1 EA)
REFRIGERATOR LAMP 40W (1 EA)
DISPENSER LAMP 15W (1 EA)

SPECIFICATIONS
- 6 -
ITEMS SPECIFICATIONS
DIMENSIONS (mm) 890(W) X 725(D) X 1750(H)
NET WEIGHT (kg) 113
COOLING SYSTEM Fan Cooling
TEMPERATURE CONTROL Micom Control
DEFROSTING SYSTEM Full Automatic
Heater Defrost
INSULATION Cyclo-Pentane
COMPRESSOR P.T.C. Starting Type
EVAPORATOR Fin Tube Type
CONDENSER Wire Condenser
REFRIGERANT R134a (180g)
LUBRICATING OIL FREOL @10G (310 cc)
CAPILLARY TUBE ID 0.83
ITEMS SPECIFICATIONS
DRIER MOLECULAR SIEVE XH-7
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 Injection Heater
Damper Heater
FREEZER LAMP 40W (1 EA)
REFRIGERATOR LAMP 40W (1 EA)
DISPENSER LAMP 15W (1 EA)
1750 1720 1750
600
948
890
660
711
725
1133.5
<Front View> <Plane View>
3. Ref No. : GR-L197

SPECIFICATIONS
- 7 -
ITEMS SPECIFICATIONS
DIMENSIONS (mm) 890(W) X 840(D) X 1750(H)
NET WEIGHT (kg) 125
COOLING SYSTEM Fan Cooling
TEMPERATURE CONTROL Micom Control
DEFROSTING SYSTEM Full Automatic
Heater Defrost
INSULATION Cyclo-Pentane
COMPRESSOR P.T.C. Starting Type
EVAPORATOR Fin Tube Type
CONDENSER Wire Condenser
REFRIGERANT R134a (180g)
LUBRICATING OIL FREOL @10G (310 cc)
CAPILLARY TUBE ID 0.83
ITEMS SPECIFICATIONS
DRIER MOLECULAR SIEVE XH-7
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 Injection Heater
Damper Heater
FREEZER LAMP 40W (1 EA)
REFRIGERATOR LAMP 40W (1 EA)
DISPENSER LAMP 15W (1 EA)
1750 1720 1750
685
948
890
745
796
840
1218.5
<Front View> <Plane View>
4. Ref No. : GR-L247

SPECIFICATIONS
- 8 -
ITEMS SPECIFICATIONS
DIMENSIONS (mm) 890(W) X 755(D) X 1750(H)
NET WEIGHT (kg) 120
COOLING SYSTEM Fan Cooling
TEMPERATURE CONTROL Micom Control
DEFROSTING SYSTEM Full Automatic
Heater Defrost
INSULATION Cyclo-Pentane
COMPRESSOR P.T.C. Starting Type
EVAPORATOR Fin Tube Type
CONDENSER Wire Condenser
REFRIGERANT R134a (180g)
LUBRICATING OIL FREOL @10G (310 cc)
CAPILLARY TUBE ID 0.83
ITEMS SPECIFICATIONS
DRIER MOLECULAR SIEVE XH-7
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 Injection Heater
Damper Heater
FREEZER LAMP 40W (1 EA)
REFRIGERATOR LAMP 40W (1 EA)
DISPENSER LAMP 15W (1 EA)
1750 1720 1750
600
948
890
660
711
755
1133.5
<Front View> <Plane View>
5. Ref No. : GR-L207

SPECIFICATIONS
- 9 -
ITEMS SPECIFICATIONS
DIMENSIONS (mm) 890(W) X 840(D) X 1750(H)
NET WEIGHT (kg) 117
COOLING SYSTEM Fan Cooling
TEMPERATURE CONTROL Micom Control
DEFROSTING SYSTEM Full Automatic
Heater Defrost
INSULATION Cyclo-Pentane
COMPRESSOR P.T.C. Starting Type
EVAPORATOR Fin Tube Type
CONDENSER Wire Condenser
REFRIGERANT R134a (180g)
ITEMS SPECIFICATIONS
LUBRICATING OIL FREOL @10G (310 cc)
CAPILLARY TUBE ID 0.83
DRIER MOLECULAR SIEVE XH-7
FIRST DEFROST 4 - 5 Hours
DEFROST CYCLE 13 - 15 Hours
DEFROSTING DEVICE Heater, Sheath
ANTI SWEAT HEATER Home Bar Heater
ANTI-FREEZING HEATER Damper Heater
FREEZER LAMP 40W (1 EA)
REFRIGERATOR LAMP 40W (1 EA)
DISPENSER LAMP 15W (1 EA)
1750 1720 1750
685
948
890
745
796
840
1218.5
<Front View> <Plane View>
1. Ref No. : GR-C247

SPECIFICATIONS
- 10 -
ITEMS SPECIFICATIONS
DIMENSIONS (mm) 890(W) X 755(D) X 1750(H)
NET WEIGHT (kg) 112
COOLING SYSTEM Fan Cooling
TEMPERATURE CONTROL Micom Control
DEFROSTING SYSTEM Full Automatic
Heater Defrost
INSULATION Cyclo-Pentane
COMPRESSOR P.T.C. Starting Type
EVAPORATOR Fin Tube Type
CONDENSER Wire Condenser
REFRIGERANT R134a (180g)
1750 1720 1750
600
948
890
660
711
755
1133.5
<Front View> <Plane View>
2. Ref No. : GR-C207
ITEMS SPECIFICATIONS
LUBRICATING OIL FREOL @10G (310 cc)
CAPILLARY TUBE ID 0.83
DRIER MOLECULAR SIEVE XH-7
FIRST DEFROST 4 - 5 Hours
DEFROST CYCLE 13 - 15 Hours
DEFROSTING DEVICE Heater, Sheath
ANTI SWEAT HEATER Home Bar Heater
ANTI-FREEZING HEATER Damper Heater
FREEZER LAMP 40W (1 EA)
REFRIGERATOR LAMP 40W (1 EA)
DISPENSER LAMP 15W (1 EA)

SPECIFICATIONS
- 11 -
ITEMS SPECIFICATIONS
DIMENSIONS (mm) 890(W) X 840(D) X 1750(H)
NET WEIGHT (kg) 114
COOLING SYSTEM Fan Cooling
TEMPERATURE CONTROL Micom Control
DEFROSTING SYSTEM Full Automatic
Heater Defrost
INSULATION Cyclo-Pentane
COMPRESSOR P.T.C. Starting Type
EVAPORATOR Fin Tube Type
CONDENSER Wire Condenser
REFRIGERANT R134a (180g)
ITEMS SPECIFICATIONS
LUBRICATING OIL FREOL @10G (310 cc)
CAPILLARY TUBE ID 0.83
DRIER MOLECULAR SIEVE XH-7
FIRST DEFROST 4 - 5 Hours
DEFROST CYCLE 13 - 15 Hours
DEFROSTING DEVICE Heater, Sheath
ANTI-FREEZING HEATER Damper Heater
FREEZER LAMP 40W (1 EA)
REFRIGERATOR LAMP 40W (1 EA)
DISPENSER LAMP 15W (1 EA)
1750 1720 1750
685
948
890
745
796
840
1218.5
<Front View> <Plane View>
3. Ref No. : GR-B247

SPECIFICATIONS
- 12 -
ITEMS SPECIFICATIONS
DIMENSIONS (mm) 890(W) X 755(D) X 1750(H)
890(W)
X 725(D) X
1750(H)
NET WEIGHT (kg) 109 106
COOLING SYSTEM Fan Cooling
TEMPERATURE CONTROL Micom Control
DEFROSTING SYSTEM Full Automatic
Heater Defrost
INSULATION Cyclo-Pentane
COMPRESSOR P.T.C. Starting Type
EVAPORATOR Fin Tube Type
CONDENSER Wire Condenser
REFRIGERANT R134a (180g)
ITEMS SPECIFICATIONS
LUBRICATING OIL FREOL @10G (310 cc)
CAPILLARY TUBE ID 0.83
DRIER MOLECULAR SIEVE XH-7
FIRST DEFROST 4 - 5 Hours
DEFROST CYCLE 13 - 15 Hours
DEFROSTING DEVICE Heater, Sheath
ANTI-FREEZING HEATER Damper Heater
FREEZER LAMP 40W (1 EA)
REFRIGERATOR LAMP 40W (1 EA)
DISPENSER LAMP 15W (1 EA)
1750 1720 1750
600
948
890
660
711
755
1133.5
<Front View> <Plane View>
4. Ref No. : GR-B207 / GR-B197

SPECIFICATIONS
- 13 -
ITEMS SPECIFICATIONS
DIMENSIONS (mm) 890(W) X 840(D) X 1750(H)
NET WEIGHT (kg) 117
COOLING SYSTEM Fan Cooling
TEMPERATURE CONTROL Micom Control
DEFROSTING SYSTEM Full Automatic
Heater Defrost
INSULATION Cyclo-Pentane
COMPRESSOR P.T.C. Starting Type
EVAPORATOR Fin Tube Type
CONDENSER Wire Condenser
REFRIGERANT R134a (180g)
ITEMS SPECIFICATIONS
LUBRICATING OIL FREOL @10G (310 cc)
CAPILLARY TUBE ID 0.83
DRIER MOLECULAR SIEVE XH-7
FIRST DEFROST 4 - 5 Hours
DEFROST CYCLE 13 - 15 Hours
DEFROSTING DEVICE Heater, Sheath
ANTI SWEAT HEATER Home Bar Heater
ANTI-FREEZING HEATER Damper Heater
FREEZER LAMP 40W (1 EA)
REFRIGERATOR LAMP 40W (1 EA)
DISPENSER LAMP 15W (1 EA)
1750 1720 1750
685
948
890
745
796
840
1218.5
<Front View> <Plane View>
1. Ref No. : GR-C247

SPECIFICATIONS
- 14 -
ITEMS SPECIFICATIONS
DIMENSIONS (mm) 890(W) X 755(D) X 1750(H)
NET WEIGHT (kg) 112
COOLING SYSTEM Fan Cooling
TEMPERATURE CONTROL Micom Control
DEFROSTING SYSTEM Full Automatic
Heater Defrost
INSULATION Cyclo-Pentane
COMPRESSOR P.T.C. Starting Type
EVAPORATOR Fin Tube Type
CONDENSER Wire Condenser
REFRIGERANT R134a (180g)
1750 1720 1750
600
948
890
660
711
755
1133.5
<Front View> <Plane View>
2. Ref No. : GR-C207
ITEMS SPECIFICATIONS
LUBRICATING OIL FREOL @10G (310 cc)
CAPILLARY TUBE ID 0.83
DRIER MOLECULAR SIEVE XH-7
FIRST DEFROST 4 - 5 Hours
DEFROST CYCLE 13 - 15 Hours
DEFROSTING DEVICE Heater, Sheath
ANTI SWEAT HEATER Home Bar Heater
ANTI-FREEZING HEATER Damper Heater
FREEZER LAMP 40W (1 EA)
REFRIGERATOR LAMP 40W (1 EA)
DISPENSER LAMP 15W (1 EA)

SPECIFICATIONS
- 15 -
ITEMS SPECIFICATIONS
DIMENSIONS (mm) 890(W) X 840(D) X 1750(H)
NET WEIGHT (kg) 114
COOLING SYSTEM Fan Cooling
TEMPERATURE CONTROL Micom Control
DEFROSTING SYSTEM Full Automatic
Heater Defrost
INSULATION Cyclo-Pentane
COMPRESSOR P.T.C. Starting Type
EVAPORATOR Fin Tube Type
CONDENSER Wire Condenser
REFRIGERANT R134a (180g)
ITEMS SPECIFICATIONS
LUBRICATING OIL FREOL @10G (310 cc)
CAPILLARY TUBE ID 0.83
DRIER MOLECULAR SIEVE XH-7
FIRST DEFROST 4 - 5 Hours
DEFROST CYCLE 13 - 15 Hours
DEFROSTING DEVICE Heater, Sheath
ANTI-FREEZING HEATER Damper Heater
FREEZER LAMP 40W (1 EA)
REFRIGERATOR LAMP 40W (1 EA)
DISPENSER LAMP 15W (1 EA)
1750 1720 1750
685
948
890
745
796
840
1218.5
<Front View> <Plane View>
3. Ref No. : GR-B247

SPECIFICATIONS
- 16 -
ITEMS SPECIFICATIONS
DIMENSIONS (mm) B207 890(W) X 755(D) X 1750(H)
B197 890(W)
X 725(D)
X 1750(H)
NET WEIGHT (kg) 109
COOLING SYSTEM Fan Cooling
TEMPERATURE CONTROL Micom Control
DEFROSTING SYSTEM Full Automatic
Heater Defrost
INSULATION Cyclo-Pentane
COMPRESSOR P.T.C. Starting Type
EVAPORATOR Fin Tube Type
CONDENSER Wire Condenser
ITEMS SPECIFICATIONS
REFRIGERANT R134a (180g)
LUBRICATING OIL FREOL @10G (310 cc)
CAPILLARY TUBE ID 0.83
DRIER MOLECULAR SIEVE XH-7
FIRST DEFROST 4 - 5 Hours
DEFROST CYCLE 13 - 15 Hours
DEFROSTING DEVICE Heater, Sheath
ANTI-FREEZING HEATER Damper Heater
FREEZER LAMP 40W (1 EA)
REFRIGERATOR LAMP 40W (1 EA)
DISPENSER LAMP 15W (1 EA)
1750 1720 1750
600
948
890
660
711
755
1133.5
<Front View> <Plane View>
4. Ref No. : GR-B207 / GR-B197

PARTS IDENTIFICATION
- 17 -
Cover Hinge
Home Bar
Frame Display
Cover PWB
Water Tube
Dispenser Lamp
Ice & Water
Dispenser Button
Freezer
Compartment Refrigerator Compartment
Conversion Switch
(Meats/Vegetables) Humidity Switch Vegetable
drawer/Meat drawer
Door rack
Refreshment center
(optional)
Door rack
(1 piece or 2 piece)
Door rack
(1 piece or 2 piece)
Milk product corner
Cover, Lamp-R/U
Shelf
Egg Box
Snack Corner
Vegetable Box
Folding Shelf
Wine Rack
Lamp
Lower Cover
Door rack
Automatic
ice maker
Door rack
Shelf
(Steel,
T/Glass)
Drawer
1. Ref No. : GR-P247, GR-P207 (Internal Filter)

2. Ref No. : GR-P247, GR-P207 (External Filter)
PARTS IDENTIFICATION
- 18 -
Cover Hinge
Home Bar
Frame Display
Cover PWB
Water Tube
Dispenser Lamp
Ice & Water
Dispenser Button
Freezer
Compartment Refrigerator Compartment
Conversion Switch
(Meats/Vegetables) Humidity Switch Vegetable
drawer/Meat drawer
Door rack
Refreshment center
(optional)
Door rack
(1 piece or 2 piece)
Door rack
(1 piece or 2 piece)
Milk product corner
Cover, Lamp-R/U
Shelf
Egg Box
Snack Corner
Vegetable Box
Folding Shelf
Wine Rack
Lamp
Lower Cover
Door rack
Automatic
ice maker
Door rack
Shelf
(Steel,
T/Glass)
Drawer

PARTS IDENTIFICATION
- 19 -
Cover Hinge Cover PWB
Frame Display
Water Tube
Dispenser Lamp
Ice & Water
Dispenser Button
Lamp
Shelf
(Steel,
T/Glass)
Lower Cover Humidity Switch
Door rack
Drawer
Freezer
Compartment Refrigerator Compartment
Automatic
ice maker
Door rack
Conversion Switch
(Meats/Vegetables)
Shelf
Egg Box
Snack Corner
Vegetable Box
Vegetable
drawer/Meat drawer
Guide bottle
Milk product corner
Door rack
Door rack
(1 piece or 2 piece)
Door rack
(1 piece or 2 piece)
Cover, Lamp-R/U
Folding Shelf
Wine Rack
3. Ref No. : GR-L247, GR-L207, GR-L197 (Internal Filter)

4. Ref No. : GR-L247, GR-L207 (External Filter)
PARTS IDENTIFICATION
- 20 -
Cover Hinge Cover PWB
Frame Display
Water Tube
Dispenser Lamp
Ice & Water
Dispenser Button
Lamp
Shelf
(Steel,
T/Glass)
Lower Cover Humidity Switch
Door rack
Drawer
Freezer
Compartment Refrigerator Compartment
Automatic
ice maker
Door rack
Conversion Switch
(Meats/Vegetables)
Shelf
Egg Box
Snack Corner
Vegetable Box
Vegetable
drawer/Meat drawer
Guide bottle
Milk product corner
Door rack
Door rack
(1 piece or 2 piece)
Door rack
(1 piece or 2 piece)
Cover, Lamp-R/U
Folding Shelf
Wine Rack