GR-349SQF — LG Refrigerator Service Manual (repair manual)

Model
GR-349SQF
Pages
44
Size
6.37 MB
Type
PDF
Document
Service Manual
Brand
Device
Refrigerator
File
gr-349sqf.zip
Date

View LG GR-349SQF Service Manual online

3 OLP (OVER LOAD PROTECTOR)
1) Definition of OLP
(1) OLP (OVER LOAD PROTECTOR) is attached to the
Hermetic Compressor and protects the Motor by cutting
off current in Compressor Motor in case of over-rising
temperature by Bimetal in the OLP.
(2) When over-voltage flows to Compressor motor, the
Bimetal works by heating the heater inside the OLP, 
and the OLP protects Motor by cutting off current which
flows to the Compressor Motor.
2) Role of the OLP
(1) The OLP is attached to the Hermetic Compressor used
for the Refrigerator and Show Case and prevents the
Motor Coil from being started in the Compressor.
(2) Do not turn the Adjust Screw of the OLP in any way for
normal operation of the OLP.
(Composition and connection Diagram of OLP)
CIRCUIT DIAGRAM
CONTACTING
POINT
COVER
BIMETAL
CONTACTING
POINT
HEATER
TERMINALS
ADJUST
SCREW
HEATER
BIMETAL
Figure  20
NOTE : 1. This is a basic diagram and specifications vary in different localities.
- 10 -
C
N
L
3
6
5
2
S
BK
PK
RD
BL
BL
BL
BK
BL
CAPACITOR
PART
EARTH PART
COMPRESSOR
P.T.C
STARTER
RUNNING
BL
BL
BL
BK
PR
GN/YL
POWER
SUPPLY
CORD
RT-SENSOR
YL
BL
DEF-SENSOR
F-SENSOR
DOOR OPEN
PERCEPTION
BL
BL
BO
BO
GY
RD
GY PR BL YL
RD BN WH WH
BO
YL
BK
GY
BN
BK
OVERLOAD
PROTECTOR
STARTING
COOLING      
FAN MOTOR
DOOR SW-R
R-LAMP
M
C
M
FAN MOTOR
PWB ASSY, MAIN
DISPLAY CONTROL P.W.B
CIRCUIT DIAGRAM
1 2 3 4 5 6 7 8 9
GY
A
PR BL YL
RD BN WH WH
BO
1 2 3 4 5 6 7 8 9
• THE PLUG TYPE,
CAPACITOR PART,
COMPRESSOR EARTH
PART ON CIRCUIT
DIAGRAM ARE SUBJECT
TO CHANGE IN DIFFERENT
LOCALITIES AND ACCORDANCE
WITH MODEL TYPE
• WHEN STARTING CAPACITOR
IS NOT USED, NO.3,4 OF PTC
START IS CONNECTED
INTERNALLY
M
3854JD1026A
BK:BLACK
YL:YELLOW
SB:SKY BLUE
BN :BROWN
GN:GREEN
PK :PINK
RD:RED
BL :BLUE
GN/YL:GREEN/YELLOW
BO:BRIGHT ORANGE
PR:PURPLE
GY:GRAY
WH/BK:WHITE/BLACK
WH:WHITE
B
9 8 7 6
4 3 2 1
5
BL
YL
BK
GY
BN
BL
FUSE-M
( 72
˚C
)
SHEATH HEATER
GY
RD
B
A
1. PRECAUTION
1) Before reversing the door, first of all, you should take 
out food and accessories like shelves or trays which are
not fixed in the refrigerator.
2) Use Torque Wrench or Spanner to fix or remove the
bolt.
3) Don't lay the refrigerator down in working with it, it will
cause to get out of order.
4) Be careful not to drop the door in disassembling or
assembling the freezer or the refrigerator door.
2. HOW TO REVERSE THE DOORS
1) Seperate screw 
and remove lower cover 
and move
cap lower cover 
. And, seperate screw 
, lower hinge
, and remove pin 
. Separating the freezer door     in
opening, and more the position the cap 
2) Separating screw     and remove the center hinge     
and the refrigerator door    . Move the position of cap    .
3) Move the position of upper hinge pin    , and cap    .
Assemble the refrigerator door    . Assemble center
hinge     and bolt    . Assemble freezer door    .
Assemble the lower hinge 
, bolt 
and lower cover 
.
REPLACEMENT OF DOOR OPENING TYPE
- 6 -
21
7
2
3
1
21
4
6
5
14
15
12
11
5
4
21
10
2
1
12
13
10
11
11
10
12
13
15
12
11
10
21
14
1 DOOR
● 
Freezer Door
1) Loosen 2 screws and pull the Lower Cover. 
2) Loosen hexagonal bolts fixing the lower hinge to the
body to remove the freezer door only.
3) Pull out the Door Gasket to remover from the 
Door Foam Assy, F.
Refrigerator Door
1) Loosen hexagonal bolts fixing the center hinge(Hinge,C)
to the body to remove the refrigerator door only.
2) Pull out the Door Gasket to remove from the 
Door Foam Assy, R.
2 DOOR SWITCH
1) Loosen four screws in upper part and disconnect top
cover.
2) Disconnect Lead Wire from switch.
3) Disengage hook behind the switch by pressing it with
hands.
3 REFRIGERATOR ROOM LAMP
1) Remove the Cover Lamp, R by pulling with a '–' type
driver.
2) Remove the Lamp by turning.
Bolt
Lower Hinge
Figure  6
GASKET
Figure  7
Hinge, C
Bolt
Figure  8
Figure  9
DISASSEMBLY
- 7 -
Figure  10
4 FAN AND FAN MOTOR
1) Remove freezer drawers.
2) Remove two cap, screws and loosen two screws in Grille Fan.
3) Pull out the Grille Fan and Shroud, F.
4) Disconnect the housing of lead wire.
5) Separate the Fan Assy.
6) Losse 2 screw fixed to the Bracket.
7) Pull out Shroud, F remove the Fan Motor Assy.
8) Separate the Motor Bracket and Rubber.
5 DEFROST CONTROL ASSY
Defrost Control Assy consists of Thermistor and Fuse, Melting.
Thermistor functions to defrost automatically and it is attached to
metal side of the Evaporator and senses temperature.
Fuse, Melting is a kind of safety device for preventing overheating
of the Heater when defrosting. 
At the temperature of 72
°
C, it stops the emission of heat from the
Heater.
1) Pull out the Shroud, F after removing the Grille.
2) Separate the connector connected with the Defrost Control
Assy and replace new one.
6 DAMPER CONTROL
1) Remove the Cover Lamp, R and loosen 2 screw.
2) Pull the Control Box, R and separate the lead wire
housing.
3) Remove the Cover Lamp, R.
4) Separate the Insulation Multi Duct and Control Box, R.
5) Disassemble the Knob.
6) Separate the Damper Control and Control Box, R.
7) Separate the Damper Control and Resistor.
8) Disconnect the lead wire.
7 HEATER, SHEATH
In this refrigerator, Heater, Sheath is used for defrosting
heater. During heating, the temperature of heater rises
about 300~500
°
C. Therefore, be careful not to burn while
servicing.
1) After removing the Grille and Shroud, separate the
Heater, Sheath by disconnecting the connectors.
2) Exchanged Heater, Sheath and connected the housing.
REFRIGERATOR ROOM LAMP
Heater, Sheath
GUIDE FAN
FAN
SHROUD
FAN MOTOR
GRILLE
Fuse, Melting
Thermistor
Figure  13
Figure  14
Figure  11
Figure  12
- 8 -
Page of 44
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Here you can view online or download LG GR-349SQF Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair LG GR-349SQF Refrigerator. Information contained in LG GR-349SQF service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).