LG GR-B197GVQ User manual

CAUTION
PLEASE
READ
CAREFULLY
THE
SAFETY PRECAUTIONS OF THIS BOOK
BEFORE CHECKING OR OPERATING
THE
REFRIGERATOR.
REFRIGERATOR
SERVICE MANUAL
MODEL: GR-B197GT
Q
COLOR: TITANIUM
http://biz.lgservice.com
Ref.No.
GR-B197GTQ
GR-B197GVQ
GR-B197GVQ
SUPER
WHITE

WARNINGS
AND
PRECAUTIONS FOR SAFETY
................................................................................................................
3
SPECIFICATIONS...................................................................................................................................................................
4
PARTS IDENTIFICATION
..................................................................................................................................................... 12
HOW TO INSTALL
THE
REFRIGERATOR
..........................................................................................................................
18
HOW TO ADJUST DOOR HEIGHT OF
THE
REFRIGERATOR
........................................................................................
18
HOW TO CONTROL
THE
AMOUNT OF
WATER
SUPPLIED TO
THE
ICEMAKER
.........................................................
20
MICOM FUNCTION
.............................................................................................................................................................. 22
EXPLANATION FOR MICOM CIRCUIT
...............................................................................................................................
28
EXPLANATION FOR
PWB
CIRCUIT
.................................................................................................................................
28
COMPENSATION CIRCUIT FOR TOO
WARM,
TOO COLD
AT FREEZER......................................................................
43
PWB
PARTS DRAWING
AND
LIST
................................................................................................................................... 44
PWB
CIRCUIT DIAGRAM
..................................................................................................................................................
54
ICEMAKER
AND
DISPENSER OPERATION PRINCIPLE
AND REPAIR
METHOD........................................................... 58
WORKING PRINCIPLES.................................................................................................................................................... 58
FUNCTION OF ICEMAKER
...............................................................................................................................................
59
ICEMAKER TROUBLESHOOTING.................................................................................................................................... 62
ICEMAKER CIRCUIT
PART ...............................................................................................................................................
63
CIRCUIT
................................................................................................................................................................................
64
TROUBLE DIAGNOSIS
........................................................................................................................................................
66
TROUBLESHOOTING
.......................................................................................................................................................
66
FAULTS
..............................................................................................................................................................................
76
COOLING CYCLE
HEAVY REPAIR ...................................................................................................................................
93
HOW TO
DEAL WITH
CLAIMS
........................................................................................................................................
100
HOW TO DISASSEMBLE
AND
ASSEMBLE
.....................................................................................................................
105
DOOR
...............................................................................................................................................................................
105
HANDLE ...........................................................................................................................................................................
106
SHROUD,
GRILLE
FAN ...................................................................................................................................................
106
ICEMAKER
.......................................................................................................................................................................
106
DISPENSER
.....................................................................................................................................................................
107
WATER TANK AND WATER LINE....................................................................................................................................
109
HOME
BAR ......................................................................................................................................................................
109
EXPLODED
VIEW...............................................................................................................................................................
110
REPLACEMENT PARTS LIST............................................................................................................................................ 119
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.
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
overloaded,
it
may
cause fire. Please
use a dedicated circuit for the
refrigerator.
5. Please make sure the outlet is
properly grounded,
particularly
in
a wet or
damp
area.
6. Use standard electrical
components.
7.
Make sure hooks are
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 for evidence of moisture intrusion
in
the
electrical
components. Replace
the
parts
or mask with
insulation
tape
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
suggest
that customers
repair
their
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,
gas,
or medicine
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 with full of water into the
freezer. The contents
will
freeze and break the
glass
bottles.
15. When
you
scrap
or discard the
refrigerator, please
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
890(W)X840(D)X1750(H)mm
(35X33
1
/8X68
7
/8
in.)
NET
WEIGHT 128
kg
(282
1
/
2
lbs.)
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
(185
g)
(6
1
/
2
oz.)
LUBRICATING OIL FREOL
@15G
(320 cc)
DRIER
1Ø0.83
CAPILLARY TUBE MOLECULAR SIEVE
XH-7
ITEMS SPECIFICATIONS
FIRST DEFROST 4-5Hours
DEFROST CYCLE 13
-
15 Hours
DEFROSTING DEVICE
Heater,
Sheath
Heater,
L
-
Cord
ANTI
SWEAT
HEATER
Dispenser
Duct Door Heater
Dispenser
Heater
Home Bar Heater
ANTI-FREEZING
HEATER
Water Tank Heater
Damper
Heater
FREEZER LAMP
40W(1EA)
REFRIGERATOR
LAMP
40W(1EA)
DISPENSER
LAMP
15W(1EA)
1750 (68
7
/
8
)
1720 (67
3
/
4
)
1750 (68
7
/
8
)
685 (27)
948
(37
3
/
8
)
890
(35)
745 (29
3
/
8
)
796 (31
3
/
8
)
840 (33
1
/
8
)
1218.5 (48)
1.
Ref No.
:
GR-P247
Front View
Top
View

SPECIFICATIONS
-5-
1750 (68
7
/
8
)
1720 (67
3
/
4
)
1750 (68
7
/
8
)
600 (23
5
/
8
)
948
(37
3
/
8
)
890
(35)
660 (26)
711 (28)
755 (29
3
/
4
)
1133.5 (44
5
/
8
)
Front View
Top
View
2.
Ref No.
:
GR-P207
ITEMS SPECIFICATIONS
FIRST DEFROST 4-5Hours
DEFROST CYCLE 13
-
15 Hours
DEFROSTING DEVICE
Heater,
Sheath
Heater,
L
-
Cord
ANTI
SWEAT
HEATER
Dispenser
Duct Door Heater
Dispenser
Heater
Home Bar Heater
ANTI-FREEZING
HEATER
Water Tank Heater
Damper
Heater
FREEZER LAMP
40W(1EA)
REFRIGERATOR
LAMP
40W(1EA)
DISPENSER
LAMP
15W(1EA)
ITEMS SPECIFICATIONS
DIMENSIONS
890(W)X755(D)X1750(H)mm
(35X29
3
/4X68
7
/8
in.)
NET
WEIGHT 123
kg
(271
1
/
8
lbs.)
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
(185
g)
(6
1
/
2
oz.)
LUBRICATING OIL FREOL
@15G
(320 cc)
DRIER
1Ø0.83
CAPILLARY TUBE MOLECULAR SIEVE
XH-7

SPECIFICATIONS
-6-
ITEMS SPECIFICATIONS
DIMENSIONS
890(W)X840(D)X1750(H)mm
(35X33
1
/8X68
7
/8
in.)
NET
WEIGHT 125
kg
(275
5
/
8
lbs.)
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
(185
g)
(6
1
/
2
oz.)
LUBRICATING OIL FREOL
@15G
(320 cc)
DRIER
1Ø0.83
ITEMS SPECIFICATIONS
CAPILLARY TUBE MOLECULAR SIEVE
XH-7
FIRST DEFROST 4-5Hours
DEFROST CYCLE 13
-
15 Hours
DEFROSTING DEVICE
Heater,
Sheath
Heater,
L-Cord
ANTI
SWEAT
HEATER
Dispenser
Duct Door Heater
Dispenser
Heater
ANTI-FREEZING
HEATER
Water Tank Heater
Damper
Heater
FREEZER LAMP
40W(1EA)
REFRIGERATOR
LAMP
40W(1EA)
DISPENSER
LAMP
15W(1EA)
685 (27)
948
(37
3
/
8
)
890
(35)
745 (29
3
/
8
)
796 (31
3
/
8
)
840 (33
1
/
8
)
1218.5 (48)
1750 (68
7
/
8
)
1720 (67
3
/
4
)
1750 (68
7
/
8
)
Front View
Top
View
3. Ref No.
:
GR-L247

SPECIFICATIONS
-7-
ITEMS SPECIFICATIONS
DIMENSIONS
890(W)X755(D)X1750(H)mm
(35X29
3
/4X68
7
/8
in.)
NET
WEIGHT 120
kg
(264
1
/
2
lbs.)
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
(185
g)
(6
1
/
2
oz.)
LUBRICATING OIL FREOL
@15G
(320 cc)
DRIER
1Ø0.83
ITEMS SPECIFICATIONS
CAPILLARY TUBE MOLECULAR SIEVE
XH-7
FIRST DEFROST 4-5Hours
DEFROST CYCLE 13
-
15 Hours
DEFROSTING DEVICE
Heater,
Sheath
Heater,
L-Cord
ANTI
SWEAT
HEATER
Dispenser
Duct Door Heater
Dispenser
Heater
ANTI-FREEZING
HEATER
Water Tank Heater
Damper
Heater
FREEZER LAMP
40W(1EA)
REFRIGERATOR
LAMP
40W(1EA)
DISPENSER
LAMP
15W(1EA)
1750 (68
7
/
8
)
1720 (67
3
/
4
)
1750 (68
7
/
8
)
600 (23
5
/
8
)
948
(37
3
/
8
)
890
(35)
660 (26)
711 (28)
755 (29
3
/
4
)
1133.5 (44
5
/
8
)
Front View
Top
View
4.
Ref No.
:
GR-L207

SPECIFICATIONS
-8-
ITEMS SPECIFICATIONS
DIMENSIONS
890(W)X840(D)X1750(H)mm
(35X33
1
/8X68
7
/8
in.)
NET
WEIGHT
117
kg
(257
7
/
8
lbs.)
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
(185
g)
(6
1
/
2
oz.)
LUBRICATING OIL FREOL
@15G
(320 cc)
DRIER
1Ø0.83
CAPILLARY TUBE MOLECULAR SIEVE
XH-7
ITEMS SPECIFICATIONS
FIRST DEFROST 4-5Hours
DEFROST CYCLE 13
-
15 Hours
DEFROSTING DEVICE
Heater,
Sheath
Heater,
L
-
Cord
ANTI
SWEAT
HEATER
Home Bar Heater
ANTI-FREEZING
HEATER
Damper
Heater
FREEZER LAMP
40W(1EA)
REFRIGERATOR
LAMP
40W(1EA)
DISPENSER
LAMP
15W(1EA)
1750 (68
7
/
8
)
1720 (67
3
/
4
)
1750 (68
7
/
8
)
685 (27)
948
(37
3
/
8
)
890
(35)
745 (29
3
/
8
)
796 (31
3
/
8
)
840 (33
1
/
8
)
1218.5 (48)
Front View
Top
View
1.
Ref No.
:
GR-C247

SPECIFICATIONS
-9-
ITEMS SPECIFICATIONS
DIMENSIONS
890(W)X755(D)X1750(H)mm
(35X29
3
/4X68
7
/8
in.)
NET
WEIGHT
112
kg
(246
7
/
8
lbs.)
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
(185
g)
(6
1
/
2
oz.)
LUBRICATING OIL FREOL
@15G
(320 cc)
DRIER
1Ø0.83
CAPILLARY TUBE MOLECULAR SIEVE
XH-7
1750 (68
7
/
8
)
1720 (67
3
/
4
)
1750 (68
7
/
8
)
600 (23
5
/
8
)
948
(37
3
/
8
)
890
(35)
660 (26)
711 (28)
755 (29
3
/
4
)
1133.5 (44
5
/
8
)
Front View
Top
View
2.
Ref No.
:
GR-C207
ITEMS SPECIFICATIONS
FIRST DEFROST 4-5Hours
DEFROST CYCLE 13
-
15 Hours
DEFROSTING DEVICE
Heater,
Sheath
Heater,
L
-
Cord
ANTI
SWEAT
HEATER
Home Bar Heater
ANTI-FREEZING
HEATER
Damper
Heater
FREEZER LAMP
40W(1EA)
REFRIGERATOR
LAMP
40W(1EA)
DISPENSER
LAMP
15W(1EA)

SPECIFICATIONS
-10-
ITEMS SPECIFICATIONS
DIMENSIONS
890(W) X840(D)X1750(H)mm
(35X33
1
/8X68
7
/8
in.)
NET
WEIGHT
114
kg
(251
3
/
8
lbs.)
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
(185
g)
(6
1
/
2
oz.)
LUBRICATING OIL FREOL
@15G
(320 cc)
DRIER
1Ø0.83
ITEMS SPECIFICATIONS
CAPILLARY TUBE MOLECULAR SIEVE
XH-7
FIRST DEFROST 4-5Hours
DEFROST CYCLE 13
-
15 Hours
DEFROSTING DEVICE
Heater,
Sheath
Heater,
L-Cord
ANTI-FREEZING
HEATER
Damper
Heater
FREEZER LAMP
40W(1EA)
REFRIGERATOR
LAMP
40W(1EA)
DISPENSER
LAMP
15W(1EA)
1750 (68
7
/
8
)
1720 (67
3
/
4
)
1750 (68
7
/
8
)
685 (27)
948
(37
3
/
8
)
890
(35)
745 (29
3
/
8
)
796 (31
3
/
8
)
840 (33
1
/
8
)
1218.5 (48)
Front View
Top
View
3. Ref No.
:
GR-B247