LG GF-5D906SL GR-J31FWSHL Service Manual & Repair Guide
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REFRIGERATOR
SERVICE MANUAL
GF-5D906SL
GR-J31FWSHL
Chapter 1 Safety Warning and Cautions ..........................................................................................3
Chapter 2 Product Standards ...........................................................................................................8
Chapter 3 Circuit Diagram ...............................................................................................................10
Chapter 4 Appearance Size of Refrigerator and Name of Every Part .........................................11
1. Appearance Size of Refrigerator ...............................................................................................11
2. Major Names ............................................................................................................................12
Chapter 5 Micom Function ...............................................................................................................13
1. Operating panel drawing ..........................................................................................................13
2. Function description .................................................................................................................14
Chapter 6 PCB Picture......................................................................................................................21
Chapter 7 Trouble Shooting .............................................................................................................23
1. Error code summary .................................................................................................................23
2. Function description .................................................................................................................25
Chapter 8 Description of MICOM circuit. .......................................................................................81
1. Under/Overcooling compensation circuit of refrigerator ............................................................81
2. Undercooling compensation circuit of freezer ..........................................................................82
3. Sensor resistance characteristics table ....................................................................................84
Chapter 9 COMPRESSOR ...............................................................................................................85
1. How to judge A-inverter linear compressor error ......................................................................85
Chapter 10 How to replace refrigerator handle and display ........................................................87
1. Display service method ............................................................................................................87
Chapter 11 How to service the refrigerator home bar ..................................................................91
1. Family Home bar Model ...........................................................................................................91
How to replace Reed Switch......................................................................................................94
2. Wide Home bar Model ...............................................................................................................96
Chapter 12 How to replace refrigerator Cover TV Assembly .......................................................97
1. Cover TV service method .........................................................................................................97
Chapter 13 How to disassemble refrigerator Multi Duct Assembly ............................................98
1. Multi duct service method .........................................................................................................98
Chapter 14 How to adjust the refrigerator door level difference ................................................99
1. When the door height is different ..............................................................................................99
Chapter 15 How to adjust the door front and rear level difference ..........................................100
1. When the bottom part of refrigerator door unleveled ..............................................................100
Chapter 16 How to Replace Water Valve & Fan ..........................................................................101
Chapter 17 How to Replace Ice Module .......................................................................................103
1. Ice maker Replacement ..........................................................................................................103
2. Ice bin Replacement................................................................................................................104
3. Module Filter Replacement ......................................................................................................105
Chapter 18 Heavy Repair Method of Refrigerator with R600a Refrigerant ..............................107
1. Outline ....................................................................................................................................107
2. Heavy repair SVC method ......................................................................................................109
Chapter 19 Exploded view and service parts list ........................................................................115
2
Table of Contents
3
Safety Warning and Cautions
▶ 'Cautions for safety ’ should be observed since they are for previously prevent accidents and
dangers when properly use or repair products in a safe manner.
▶ Cautions are classified into ‘Warning ’ and ‘Caution ’ and meaning of them are as follows
Warning
Warning
Warning means symbol to inform any accidents that may result in large danger such
as death or severe injury,etc when violating instructions.
Caution
Caution means symbol to inform any accidents that may result in injury or physical
damage of houses or furniture,etc when violating instructions.
Be cautions of air ventilation in case of repairing refrigerator cycle.
Remove heat source or fire appliance for working since R600a
refrigerant is inflammable. (Absolute no-smoking)
Be cautious of electric shock.
Control board uses power supply of
about 310V.
During the replacement of PWB
parts,make sure to pull out
the power plug and wait for
at least 3 min.,and first
pull out the power plug before
replacing or repairing other electric parts.
Check that power plugs are not
pressed by the rear side of
refrigerator.
Damage of power
plugs could result in
fire or electric shock.
Do not allow consumers to directly
repair,disassemble or modify
refrigerator.
Harm,electric shock
or fire could occur.
Use dedicate socket for power
socket.
Inserting various products
into a power socket at the
same time for use could
result in fire due to
overheat of the socket part.
Chapter 1 Safety Warning and Cautions
Inputting products requiring strict temperature
control may result in change
of quality or
dangerdue to
unexpected
reaction.
4
Safety warnings and cautions
If grounding is required,be sure to
perform grounding.
Be sure to perform grounding if deemed there
is danger of
electric shock
by water or
moisture.
Do not allow to store inflammable
ether, benzene, alcohol, chemical
drugs, LP gas, etc in a refrigerator.
There is danger of
explosion and fire.
Ether
Benzene
LP gas
Do not allow to keep drugs or
academic data, etc.in a refrigerator.
DRUG
academic
data
When getting refrigerator away,
remove its door
and do not leave
refrigerator at a place
where children play.
If children go in it and are
entrapped in it,it is
dangerous.
Take power plugs from socket for
cleaning or repair.In addition,plug
out or plug in with the wet hands.
Electric shock or
harm may occur.
Firstly take power socket out for
replacement of indoor lamp.
Electric shock may occur.
Check that dusts are adhered to the
power socket and securely insert
plugs by the end of pin so that
shaking may not occur.
Dust or incomplete connection
may result in fire.
When dusts etc are stained to the
pin part of the power socket,cleanly
wipe out them.
Fire may occur.
Warning
Grounding nut
Grounding wire
More than
75cm
Copper
plate
5
Safety warnings and cautions
Do not expand or modify length of
power plugs to use.
Electric shock or fire
may occur due to
electrical damage of
power cables.
Do not place heavy objects on a
refrigerator.
Dropping of objects during
opening or closing doors
may cause injury.
Do not hang to the door of a
refrigerator.
The refrigerator may fall
down or the hands may be
held between doors and
damaged.Especially,
be cautious of children.
Do not use an inflammable spray
near a refrigerator.
There is danger of fire since
it is inflammable material.
Leave fire appliances at a remote
location.
There is danger of fire.
Do not touch a refrigerator or socket
when gas leaks and open the door
for ventilation.
There is danger of
burning due to
explosion and
sparking.
Do not spray water inside or outside
of the refrigerator.
Bad insulation of electrical
part may result in electric
shock or fire.
Do not use a refrigerator for other
purpose than for home purpose
(keeping of medical drugs or
experimental materials,
for vessel)
Unexpected danger
such as fire,electric
shock or deterioration
of objects kept.
Always use inundated
refrigerator after service.
Electric shock or fire may occur.
Warning
6
Safety warnings and cautions
Do put the vessel that flower
base,cup,cosmetics or
drugs,etc are contained
on the refrigerator.
Fire or electric shock may occur,or
injury due to dropping may occur.
Do not accumulate objects on a
refrigerator or do not keep
foods in random method.
Dropping of objects when
opening or closing the door may
cause physical injury.
Do not put bottles,etc in the freezing
room.
There is injury danger due
to icing and breaking of
contents.
Be sure to rated parts for
replacement of electric parts.
Check marking of model,rated
voltage,rated current,operation
temperature,etc of electrical parts.
Accurately arrange wiring of the
housing part for failure repair.
Check that the hanging part
of the housing part is firmly
suspended.
Do not damage,process or forcedly
bend,take out or twist power cords.
Damage of power cords may
cause fire or electric shock.
Entirely remove dusts or foreign
materials from housing part,wiring
part and checking part,etc
for failure repair.
Danger of fire can be
prevented from
tracking,short,etc.
Check assembling status of parts
after failure repair.
Parts should show same status
before repair.
Check that there is a track that
moisture is penetrated into electric
parts.
If there is a track that moisture is
penetrated,replace parts or take a necessary
step such as insulation tapping.
Insert power plug into a socket after
more than 3 minutes pass when
taking out plugs and then
inserting them again.
Unreasonable operation of a
compressor may cause failure.
Caution
7
Safety warnings and cautions
While you pull out the power
plugs,hold the end of the plug,not
the cord.
Fire may occur due to electric
shock or short-circuit.
Do not use power cords or power
plugs when they are damaged or
holes of power plugs are loose.
Fire may occur due to electric
shock or short-circuit.
Take power plugs from the socket
when not using them for a long time.
Electric shock,electrical leakage
or fire may occur due to weaken
insul ati on.
Install the product at the place where
the floor is strong and horizontal.
If installing the product at
unstable place,the refrigerator
may upset due to closing or
opening of doors of refrigerator
and user may be damaged.
Do not install product at a place with
much moisture and where water
spatters.
Deterioration of insulation
may cause electrical
leakage.
Transport product catching with
handles on the bottom side and the
top side when transporting.
If not catching with handles,
you can be damaged since
the hands are slipped.
Do not touch foods or vessels (made
of metal)in the freezing room with
the wet hands.
You may be frostbitten.
Be careful when opening or closing
refrigerator door since a person near
the refrigerator may be injured.
Be cautious since the hands or
foots are lay between door gaps
and children beside the doors
may be damaged by the corners
of product.
Do not put the hands under the
bottom of the refrigerator.
The bottom side of the
refrigerator is made of iron plate
and so you may be damaged.
Do not put live animals in the
refrigerator.
Caution
8
Product Standard
Chapter 2 Product Standard
±
± ± ±
9
Product Standard
10
Circuit Diagram
Chapter 3 Circuit Diagram
â–¶ MODEL : GR-J31FWSHL
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The LG GF-5D906SL + GR-J31FWSHL French Door Refrigerator official service manual is an essential resource for both professional technicians and DIY enthusiasts. This comprehensive manual provides in-depth information on product specifications, parts identification, installation procedures, disassembly and assembly instructions, troubleshooting and diagnosis, adjustment procedures, circuit diagrams, description of functions and circuits, as well as exploded views.
Featuring high-resolution illustrations and step-by-step instructions, this official service manual ensures the best possible guidance for repairing and servicing the refrigerator. It is available in a convenient format, allowing for easy printing from any computer and printer. With instant access upon payment, there are no shipping fees or waiting for postal delivery, enabling immediate commencement of repairs.
- Product Specification
- Parts Identification
- Installation Procedures
- Disassembly & Assemble Instructions
- Troubleshooting & Diagnosis
- Adjustment Procedures
- Circuit Diagrams
- Description of Functions & Circuits
- Exploded Views
Language: English
Format: .PDF
Pages: 124
