LG GR-P247C Manual de usuario

GR-P247C

REFRIGERATOR

SERVICE MANUAL

GR-L247C

Table of Contents

Chapter 1 Safety Warning and Cautions ........................................................................................ 3

Chapter 2 Product Standards ......................................................................................................... 8

Chapter 3 Circuit Diagram ............................................................................................................... 9

Chapter 4 Appearance Size of Refrigerator and Name of Every Part ....................................... 10

1. Appearance Size of Refrigerator .................................................................................................. 10

2. Main Name ................................................................................................................................... 11

3. Flower Lamp Operation (Applicable to some models only) ......................................................... 12

Chapter 5 Micom Function ............................................................................................................ 13

1. Operation Panel Figure ................................................................................................................ 13

2. Description of Function ................................................................................................................ 13

Chapter 6 Explanation of Micom Circuit ...................................................................................... 20

1. Explanation of PWB Circuit .......................................................................................................... 20

2. Sensor Resistance Characteristics Table .................................................................................... 25

3. Door open Detection Circuit ......................................................................................................... 36

4. PWB Circuit Diagram ................................................................................................................... 39

Chapter 7 Operation Principle and Repair Method of Ice Maker & Dispenser ......................... 41

1. Operation Principle ...................................................................................................................... 41

2. Function of Ice Maker .................................................................................................................. 42

3. Diagnosis of Ice Maker & Failure ................................................................................................. 45

4. Circuit Part of Ice Maker .............................................................................................................. 46

Chapter 8 Compressor .................................................................................................................. 47

1. Inverter Linear Compressor ......................................................................................................... 47

Chapter 9 Heavy Repair Method of Refrigerator Applying R600a Refrigerant ........................ 51

1. Outline .......................................................................................................................................... 51

2. Heavy Repair SVC Method .......................................................................................................... 52

EXPLODED VIEW ........................................................................................................................... 58

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 cautious of electric shock.

Control board (PWB Main and Sub)

uses power supply of about 310V.

Check that power plugs are not

pressed by the rear side of

refrigerator.

Damage of power plugs

could result in fire or

electric shock.

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.

Do not allow consumers to directly

repair, disassemble or modify

refrigerator.

Harm, electric shock

or fire could occur.

Chapter 1 Safety Warning and Cautions

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)

Safety warnings and cautions

Warning

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.

Grounding nut

Grounding wire

More than

75cm

Copper

plate

Do not allow to restore

inflammable ether, benzene,

alcohol, chemical drugs, LP gas,

etc in a refrigerator.

There is danger of

explosion and fire.

EtherBenzene

Chemical

drugs

LP gas

Don allow to keep drugs or

academic data, etc in a refrigerator.

in change of quality

or danger due to

unexpected

reaction.

Inputting products requiring strict

temperature control may result

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

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.

Safety warnings and cautions

Warning

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

when opening or closing

doors may injury.

Do not hang to the door of a

refrigerator.

The refrigerator may

upset 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 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.

Safety warnings and cautions

Caution

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 5 minutes pass

when taking out plugs and

then inserting them again.

Unreasonable operation of a

compressor may cause failure.

Do not put the hands or tools, etc into the

ice discharging outlet to check proper

operation of the ice feeding motor.

Damage of parts or injury of the hands may occur.

Safety warnings and cautions

Caution

power plugs catching with the end

of plugs without catching cords.

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 insulation.

Do not 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.

damaged since the hands

are slipped. Danger of fire

can be prevented from

tracking, short, etc.

If not catching with handles, you can be

Do not touch foods or vessels

(made of metal) in the freezing

room with the wet hands.

You may be frostbitten.

Be caution since a person near the

refrigerator may be damaged when

opening or closing the doors.

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 tha

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.

Product Standards

Chapter 2 Product Standards

617

205

412

910 X 788 X 1785

AC220~240/50~60Hz

135

90 ±15%[W]

200 ±15%[W]

160 ±15%[W]

Indirect cooling(F/R Control)

Micom(Outside)

Forced method

Auto

Forced method

Cyclo-Pentane

IPM operation

Pin tube type

Forced convection method

HTS60MT(190 cc)

R600a(75 g)

0.85

0.9

MOLECULAR SIEVE XH-9

4~5 hours (vary depending on condition)

9~11hours (vary depending on condition)

F-Room: 3Min, R-Room: 5Min

F-Room: 5℃, R-Room: Returned to defrost function when reaching to 10℃

250/72℃

AC240V (F-Room:200W, R-Room:150W)

DC 12V/0.5W

AC220V / 4.3W

AC230V / 8W

DC 0.8W

MRA12300-9201

DC 13V

DC 14V

12V / 8.7W

250V/0.5A

250V/9A

12.25 ㎟

DC 12V

230V~240V 50Hz

20RPM

240V/50Hz

DC12V

220V~240V/50~60Hz

DC12V

Effective inner

capacity

Heater

Rated consumption power

Temperature control

Defrost

F-Room

R-Room

F-Room

R-Room

F-Room

R-Room

Method

Start

End

Evaporation

Type of heat shield

Shelf

Auto door ice-maker

door ice-maker

-35℃special R-Room

Fixed drawer

Shelf

Egg container

Vacuum shielding vegetable room

Vegetable room

Outer dimension (W x D x H)

Rated voltage and frequency

Product weight (kg)

Rated consumption power of motor

Cooling method

Total inner capacity(L)

F-Room

R-Room

GR-P247C

Model Name

Divison

Freezing cycle

Electrical

parts

standard

Ice and water

dispenser

Compressor driving method

Evaporator

Condenser

F-Room oil

Type of refrigerant

Dryer (drying tube)

Overload protective device

Cold/freezing fan motor

Fan motor for cooling condenser

Inside lamp at F-Room

Inside lamp at R-Room

Flower lamp switch

Door switch (F-Room/R-Room)

Home bar door switch

Flower lamp

Main Fuse

Power cord

Icemaker unit

Ice feeding and clashing motor

(Motor, Geared)

Solenoid cube

Duct door Motor

Water Valve

Pump(Option)

Capillary tube

Product

-related parts

Parts related

with dewing

prevention

For preventing

ice making

F-Room

R-Room

Initial defrost

Defrost cycle

Rest time

Defrost sensor

Temp. fuse (rated/ operation temperature)

Heater sheath

Dispenser duct door heater

Chute heater

R-Room home bar heater

F-Room home bar heater

Dispenser heater

Water supply heater

Product Standards

Chapter 2 Product Standards

617

205

412

910 X 788 X 1785

AC220~240/50~60Hz

135

90 ±15%[W]

200 ±15%[W]

160 ±15%[W]

Indirect cooling(F/R Control)

Micom(Outside)

Forced method

Auto

Forced method

Cyclo-Pentane

IPM operation

Pin tube type

Forced convection method

HTS60MT(190 cc)

R600a(75 g)

0.85

0.9

MOLECULAR SIEVE XH-9

4~5 hours (vary depending on condition)

9~11hours (vary depending on condition)

F-Room: 3Min, R-Room: 5Min

F-Room: 5℃, R-Room: Returned to defrost function when reaching to 10℃

250/72℃

AC240V (F-Room:200W, R-Room:150W)

DC 12V/0.5W

AC230V / 8W

DC 0.8W

MRA12300-9201

DC 13V

DC 14V

12V / 8.7W

250V/0.5A

250V/9A

12.25 ㎟

DC 12V

230V~240V 50Hz

20RPM

240V/50Hz

DC12V

220V~240V/50~60Hz

DC12V

Effective inner

capacity

Heater

Rated consumption power

Temperature control

Defrost

F-Room

R-Room

F-Room

R-Room

F-Room

R-Room

Method

Start

End

Evaporation

Type of heat shield

Shelf

Auto door ice-maker

door ice-maker

-35℃special R-Room

Fixed drawer

Shelf

Egg container

Vacuum shielding vegetable room

Vegetable room

Outer dimension (W x D x H)

Rated voltage and frequency

Product weight (kg)

Rated consumption power of motor

Cooling method

Total inner capacity(L)

F-Room

R-Room

GR-L247C

Model Name

Divison

Freezing cycle

Electrical

parts

standard

Ice and water

dispenser

Compressor driving method

Evaporator

Condenser

F-Room oil

Type of refrigerant

Dryer (drying tube)

Overload protective device

Cold/freezing fan motor

Fan motor for cooling condenser

Inside lamp at F-Room

Inside lamp at R-Room

Flower lamp switch

Door switch (F-Room/R-Room)

Home bar door switch

Flower lamp

Main Fuse

Power cord

Icemaker unit

Ice feeding and clashing motor

(Motor, Geared)

Solenoid cube

Duct door Motor

Water Valve

Pump(Option)

Capillary tube

Product

-related parts

Parts related

with dewing

prevention

For preventing

ice making

F-Room

R-Room

Initial defrost

Defrost cycle

Rest time

Defrost sensor

Temp. fuse (rated/ operation temperature)

Heater sheath

Dispenser duct door heater

Chute heater

R-Room home bar heater

F-Room home bar heater

Dispenser heater

Water supply heater

Circuit Diagram

MODEL : GR-P247C / GR-L247C

Chapter 3 Circuit Diagram

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