Lg Ga-b409u*qa User manual

REFRIGERATOR

SERVICE MANUAL

MODEL: GA-B409U*QA/B379U*QA

CAUTION

BEFORE SERVICING THE UNIT, READ

THE "SAFETY PRECAUTIONS" IN THIS MANUAL.

http://biz.lgservice.com

CONTENTS

-3-

SAFETY PRECAUTIONS .............................................................................................................................................. 2

SERVICING PRECAUTIONS ......................................................................................................................................... 3

SPECIFICATIONS ...........................................................................................................................................................4

PARTS IDENTIFICATION ...............................................................................................................................................6

REPLACEMENT OF DOOR OPENING TYPE ................................................................................................................8

DISASSEMBLY .............................................................................................................................................................. 9

DOOR.......................................... ................................................................................................................................ 9

DOOR SWITCH....................... .................................................................................................................................... 9

FAN AND FAN MOTOR..............................................................................................................................................10

DEF' CONTROL ASM ................................................................................................................................................10

LAMP........................................... ...............................................................................................................................10

ADJUSTMENT............................... ...............................................................................................................................11

COMPRESSOR.......................... ................................................................................................................................11

PTC-STARTER........................ ...................................................................................................................................11

OLP (OVER LOAD PROTECTOR) ... ........................................................................................................................ 12

CIRCUIT DIAGRAM.......... ........................................................................................................................................... 12

TROUBLESHOOTING........ ......................................................................................................................................... 13

COMPRESSOR AND ELECTRIC COMPONENTS ....................................................................................................13

PTC AND OLP........................... ................................................................................................................................ 14

ANOTHER ELECTRIC COMPONENT.........................................................................................................................15

SERVICE DIAGNOSIS CHART...... ........................................................................................................................... 16

REFRIGERATING CYCLE ........ ................................................................................................................................17

MICOM FUNCTION & PCB CIRCUIT EXPLANATION.................................................................................................20

EXPLODED VIEW ................... .....................................................................................................................................35

SERVICING PRECAUTIONS

Please read the following instructions before servicing your

refrigerator.

1. Check the set for electric losses.

2. Unplug prior to servicing to prevent electric shock.

3. Whenever testing with power on, wear rubber gloves to

prevent electric shock.

4. If you use any kind of appliance, check regular current,

voltage and capacity.

5. Don't touch metal products in the freezer with wet hands.

This may cause frostbite.

6. Prevent water from following to electric elements in the

mechanical parts.

7. When standing up after having checked the lower section of

the refrigerator with the upper door open, move with care to

avoid hitting the upper door.

8. When tilting the set, remove any materials on the set,

especially the thin plates(ex. Glass shelf or baskets).

9. When servicing the evaporator, wear cotton gloves. This is

to prevent injuries from the sharp evaporator fins.

10. Leave the disassembly of the refrigerating cycle to a

specialized service center. The gas inside the circuit may

pollute the environment.

11. When you discharge the refrigerant, wear the protective

safety glasses or goggle for eye safety.

12. When you repair the cycle system in refrigerator, the work

area is well ventilated.

Especially if the refrigerant is R600a, there are no fire or

heat sources. (No smoking)

After the refrigerant (R600a) is completely discharged, repair any defective

parts and replace the dryer. At any case you must use the LOKRING for

connecting or replacing any part in the cycle (No Fire, No Welding).

Connect the Schrader valve to pump with the coupler. And then turn the

pump on for vacuum state (Figure 3). Let the pump run until the low-

pressure gauge indicates the vacuum (gauge pressure 0, absolute

pressure -1atm or -760mmHg). Recommended vacuum time is 30 min.

Charge the N2gas in order to check for leakage from welding points and the

LOKRING. If leakages are found, repair the defects and repeat the vacuum

process.

After the system is completely vacuumed, fill it with the refrigerant R600a up

to what has been specified at your refrigerator Name Plate. The amount of

refrigerant (R600a) must be precisely measured within the error of ±2g by

an electron scale (Figure 4).

If you use the manifold connected with both the refrigerant (R600a)

cylinder and the vacuum pump simultaneously, make sure the

pump valve is closed (Figure 5).

Connect the charging hose (that is connected to the refrigerant (R600a)

cylinder) to the Schrader valve installed on the service tube. Then, charge

the refrigerant (R600a) by controlling the Throttle valve. When you do so,

do not fully open the Throttle valve because it may make damage to the

compressor. Gradually charge the refrigerant (R600a) by changing open

and close the Throttle Valve (5g at each time). The charging hose must use

a one-way valve to prevent the refrigerant refluence. Close the Schrader

valve cap after the refrigerant (R600a) is completely recharged.

After you completely recharge the refrigerant (R600a), perform the leakage

test by using a portable leakage detector or soapy water.

Test the low pressure (suction) parts in compressor off time and high

pressure parts in compressor on time. If the leakages are found, restart from

the refrigerant (R600a) discharging process and repairs defects of leaks.

After the leakage test, check the temperature of each parts of the cycle.

Check with hands if the CONDENSER and the case (HOT-LINE pipe) that

is contacted to the door gasket are warm. Confirm that frost is uniform

distributed on the surface of the EVAPORATOR.

SERVICING PRECAUTIONS

--4-

WEIGH SCALE

THROTTLE

VALVE

COUPLE

REFRIGERANT

(R600a)

CHARGING HOSE

FILLING OR

CHARGE TUBE

VALVE TO BE OPENED

WHEN REFILLING

VALVE TO BE CLOSED

AFTER VACUUM

TO THE VACUUM PUMP

TO THE

REFRIGERATION

SYSTEM

TO THE CHARGE

CYLINDER

TO THE

VACUUM

PUMP

PRESSURE

GAUGE

Features of refrigerant (R600a)

• Achromatic and odor less gas.

• Flammable gas and the ignition (explosion) at 494°C.

• Upper/lower explosion limit: 1.8%~8.4%/Vol.

Features of the R600a refrigerator

• Charging of 60% refrigerant compared with a R134a model

• The suction pressure is below 1bar (abs) during the operation.

• Because of its low suction pressure, the external air may flow in the

cycle system when the refrigerant leak, and it causes malfunction in

the compressor.

• The displacement of compressor using R600a must be at least

1.7 times larger than that of R134a.

• Any type of dryer is applicable (XH-5, 7, 9).

•

The EVAPORATOR or any other cycle part that has welding joint is

hidden in the foam. (If not hidden inside, the whole electric parts must be

tested with the LEAKAGE TEST according to the IEC Standard.)

• The compressor has label of the refrigerant R600a.

• Only the SVC man must have an access to the system.

Installation place

• Must be well ventilated.

• Must be 20 m

or larger.

• Must be no-smoking area.

• No ignitable factors must be present.

Utilities

• Refrigerant cylinder (MAX NET 300g)

• Manometer

• Vacuum pump (600l /min)

• Piercing Clamp

• Quick coupler

• Hoses (5m-1EA, 1m-3EA)

• LOKRING

• Portable Leakage detector (3g/year↓)

• Nitrogen cylinder (for leakage test)

• Concentration gauge

Make sure before Servicing

• Refrigerant

Confirm the refrigerant by checking Name Plate and the label on the

compressor, after opening the COVER ASSY, BACK-M/C.

•

If the refrigerant is R600a, you must not weld or apply a heat source.

Air Recharging in Compressor

Before refilling the refrigerant, you must perform the test according to

Chapter 5 (TROUBLESHOOTING CHART). When the defects are

found, you must discharge the residual refrigerant (R600a) in the

outdoor. For discharging the refrigerant R600a, break the narrow

portion of tube extension by hand or with a pipe cutter as shown in

Figure 1. Leave it for 30min in outside to stabilize the pressure with

ambient. Then, check the pressure by piercing the dryer part with

piercing pliers. If the refrigerant is not completely discharged, let the

refrigerator alone for more 30min in outside.

Attach the service tube installed with a Schrader valve (one-way valve)

by using the LOKRING (Figure 2). Then, connect the Schrader valve

(one-way valve) to the pump that is connected to the discharging hose

leading to the outside. When discharging the residual refrigerant, repeat

3 cycle that includes 3min of the pump running->pump off->30sec of

the compressor running.

Figure 3

Figure 4

Figure 5

POINT TO BE

BROKEN CHARGE TUBE

EXTENSION

SCHRADER VALVE

(ONE-WAY VALVE)

LOKRING

SERVICE TUBE

EXTENSION

Figure 1 Figure 2

SPECIFICATIONS

-5-

ITEMS SPECIFICATIONS

DIMENSIONS (mm) 595(W)X651(D)X1896(H)

NET WEIGHT (kg) 77

COOLING SYSTEM Fan Cooling

TEMPERATURE

REFRIGERATOR Knob Dial

CONTROL

FREEZER Button

DEFROSTING SYSTEM Full Automatic

Heater Defrost

DOOR FINISH

Pre-Coated Metal or Vinyl Coated Metal

OUT CASE Painted Steel Sheet

INNER CASE ABS

INSULATION Polyurethane Foam

DEFROSTING DEVICE Heater, Sheath

REFRIGERANT R600a(60g)

LUBRICATION OIL FREOL S10(280 cc)

1.Ref. No: GA-B409U*QA

ITEMS SPECIFICATIONS

Transparent Shelf(3 EA)

REFRIGERATOR Vegetable Container(1 EA)

COMPARTMENT Vegetable Container Cover(1 EA)

Tray Meat (1 EA)*

Dairy Pocket Cover(2 EA)

DOOR POCKET Egg Tray(2 EA)

Little Pocket 4 or 6 EA

Bottle Pocket(1 EA)

FREEZER Tray Drawer(3 EA)

COMPARTMENT Ice Tray(1 EA)

COMPRESSOR PTC Starting Type

EVAPORATOR Fin Tube Type

CONDENSER Side & Wire Condenser

* Optional Parts

ITEMS SPECIFICATIONS

DIMENSIONS (mm) 595(W)X651(D)X1726(H)

NET WEIGHT (kg) 69

COOLING SYSTEM Fan Cooling

TEMPERATURE

REFRIGERATOR Knob Dial

CONTROL

FREEZER Button

DEFROSTING SYSTEM Full Automatic

Heater Defrost

DOOR FINISH

Pre-Coated Metal or Vinyl Coated Metal

OUT CASE Painted Steel Sheet

INNER CASE ABS

INSULATION Polyurethane Foam

DEFROSTING DEVICE Heater, Sheath

REFRIGERANT R600a(60g)

LUBRICATION OIL FREOL S10(280 cc)

2.Ref. No: GA-B379U*QA

ITEMS SPECIFICATIONS

Transparent Shelf(2 EA)

REFRIGERATOR Vegetable Container(1 EA)

COMPARTMENT

Vegetable Container Cover(1 EA)

DOOR POCKET

Egg Tray(2EA)

Little Pocket (4 EA)

Bottle Pocket(1 EA)

FREEZER Tray Drawer(3 EA)

COMPARTMENT Ice Tray(1 EA)

COMPRESSOR PTC Starting Type

EVAPORATOR Fin Tube Type

CONDENSER Side & Wire Condenser

* Optional Parts

NOTE : This is a basic model. The shape of refrigerator is subject to change.

PARTS IDENTIFICATION

-6-

Removable

Glass Shelf(2 or 3)

Lamp

Multi-air Flow Duct

Tray Meat

(Optional)

Refrigerator

Temperature Control

Vegetable Drawer

Used to keep fruits

and vegetables, etc.

fresh and crisp.

Ice Cube Tray

Freezer

Compartment

Removable

Plinth

Rotatable

Door Basket

(3or 5)

Utility Corner

(movable)

Leveling Screw

Egg Tray

Handle

Door Basket

Bottle

Door Swich

REPLACEMENT OF DOOR OPENING TYPE

-7-

Precaution

Before reversing the door, first of all, you should take out food

and accessories like shelves or trays which arenot fixed in the

fridge-freezer.

Use Torque Wrench or Spanner to fix or remove the bolt.

Do not lay the fridge-freezer down. This will cause problems.

Be careful not to drop the doors in disassembling or assembling.

How to Reverse the Door

1. Separate the screw after separating the nut on the

left of the refrigerator door handle , then separate the

refrigerator door handle . Separate the freezer door

handle in the order in which you separating the refrigerator

door handle . (The hidden handle does not need this

procedure)

2. Separate the screw and bottom cover , then separate

the cap of bottom cover and install it on the

corresponding position on the right side. Separate the

hinge lower right and the pin after separating the

screw . Install the bolt into the corresponding left hole

on the hinge lower. Separate the freezer door , then

remove the CAP on the door and install it on the

corresponding position on the right side. Separate the door

stop after your separating the screw , then install the

door stop on the corresponding position on the left.

3. Separate the cover of hinge upper , separate the two

wire . Separate the screw , separate the hinge middle

, then separate the refrigerator door .Separate cap

and install it on the corresponding position on the right.

Separate the door stop after your separating the screw

, then install the door stop on the corresponding position

on the left. Separate the screw , then separate the hinge

upper right (Hinge Upper) .

16 17

18 19

11 8

28 29

4. Remove two small caps on the front of the cover front

with a screw driver, then separate the screw and . Separate

the cover front . Move the wire to left, install the cover

front and the screw. Take the small caps out of the alternate

bag, then install the small caps.

Note: It’s unnecessory to change door switch wire .

5. Remove the small cap of the refrigerator door , then

separate the small cap . Move the cable

from left to the

corresponding position on the right. Install the small cap ,

then install the small cap on the corresponding position on

the right.

10 11

18 34

26 29

31 32

6. Install the hinge lower and the freezer door , then install

the hinge middle . Separate the cap on the freezer. Install

the freezer door, take the hinge upper out of the alternate

bag and install it on upper left. Pull out the wire from the

individual holes and connect these cables. Take the small caps

out of the alternate bag, then install the small caps. Install

base cover .

31 32

26 29

7. Separate the cap on the right side of the door, then install it

into the left screw hole (you can see this hole after the left handle

is removed). Install the handle and the screw which previously

separated on the corresponding position on the right. (The

hidden handle does not need this procedure) Then Installation

completed.

Note: Reversing the doors is not covered by the

warranty.

DISASSEMBLY

-8-

1. DOOR

•

Freezer Door

1) Loosen 2 screws and pull the Cover Lower.

2) Loosen hexagonal bolts fixing the lower hinge to the body to

remove the freezer door only.

3) Pull out the Door Gasket to remove from the Door Foam Assy,

•

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

2) Loosen four screws in upper part and disconnect top cover.

1) Using the driver remove two small cap of the front.

3) Disconnect Lead Wire from switch.

4) Disengage hook behind the switch by pressing it with hands.

4. DISPLAY

3) After removing the lamp, you must check the O-RING, which is

made by rubber and prevent electric spark, in the socket.

2)Pry the display’s cover from the gap between the display and

display cover by using a (-) screw driver. Then pull out the display

circuit board to replace.

Tear the PC SHEET on the cover of the display.(OPTION)

Figure 9

Bolt

Lower Hinge

Figure 6

GASKET

Hinge, C

Bolt

Figure 8

Figure 10

Figure 7

3. REFRIGERATOR ROOM LAMP

1) Remove the Cover Lamp, R by pulling with a '–' type driver.

2) Remove the Lamp by turning.

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 wir

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 E

vaporator and senses temperature.

Fuse, Melting is a kind of safety device for preventing overheating

of the Heater when defrosting.

At the temperature of 77°C, it stops the emission of heat from the

Heate

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.

7 HEATER, SHEATH

In this refrigerator, Heater, Sheath is used for defrosting

heater. Du ring heating, the temper ature of heater rises

about 300~350°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

GUIDE FAN

FAN

SHROUD

FAN MOTOR

GRILLE

Figure 13

Figure 11

-9-

Figure 12

Figure 14

Thermister

Fuse, Melting

Heater, SheathHeater, Sheath

ADJUSTMENT

-10-

1. COMPRESSOR

1) Role

The compressor intakes low temperature and low

pressure gas evaporated from Evaporator of the

Refrigerator, and condenses this gas to high temperature

and high pressure gas, and then plays delivering role to

Condenser.

2) Composition

The Compressor is composed of Compressor Apparatus

compressing gas, Compressor Motor moving Compressor

Apparatus and Case which protecting Compressor Apparatus

and Motor. There are PTC-Starter, and Over Load

Protector (OLP) in the Compressor outside. On the other

hand, because the Compressor consists of 1/1000mm

processing precision components and is sealed after

production in absence of dust or humidity, deal and repair

with care.

3) Note for Usage

(1) Be careful not to allow over-voltage and over current.

(2) No Strike

If applying forcible power or strike (dropping or

careless dealing), poor operation and noise may occur

(3) Use proper electric components appropriate to the

Compressor.

(4) Note to Keep Compressor.

If Compressor gets wet in the rain and rust in the pin of

Hermetic Terminal, the result may be poor operation

and poor contact may cause.

(5) Be careful that dust, humidity, and flux welding don't

inflow in the Compressor inside in replacing the

Compressor. Dust, humidity, and flux due to welding

which inflows to Cylinder may cause lockage and

noise.

2. PTC-STARTER

1) Composition of PTC-Starter

(1) PTC (Positive Temperature Coefficient) is a no-contact

semiconductor starting device which uses ceramic

material and this material consists of BaTiO3.

(2) The higher the temperature is, the higher becomes the

resistance value. These features are used as starting

device for the Motor.

2) Role of PTC-Starter

(1) PTC is attached to Hermetic Compressor used for

Refrigerator, Show Case and starts Motor.

(2) Compressor for household refrigerator applies to

single-phase induction Motor.

For normal operation of the single-phase induction motor, in

the starting operation current flows in both main coil and sub-coil.

After the starting is over, the current in subcoil is cut off. The

proper features of PTC play all the above roles. So, PTC is

used as a motor starting device.

3) PTC-Applied Circuit Diagram

According to Starting Method for the Motor

4) Motor Restarting and PTC Cooling

(1) For restarting after power off during normal

Compressor Motor operation, plug the power cord

after 5 min. for pressure balance of Refrigerating Cycle

and PTC cooling.

(2) During normal operation of the Compressor Motor,

PTC elements generate heat continuously. Therefore,

if PTC isn't cooled for a while after the power has been

shut off, Motor can't operate again.

5) Relation of PTC-Starter and OLP

(1)

If the power is off during operation of Compressor and the

power is on before the PTC is cooled, (instant shut- off within

2 min. or reconnect a power plug due to misconnecting), the

PTC isn't cooled and a resistance value grows. As a result,

current can't flow to the sub- coil and the Motor can't operate

and the OLP operates by flowing over current only in the

main-coil.

(2)

While the OLP repeats on and off operation about 3-5 times,

PTC is cooled and Compressor Motor performs normal

operation.

If OLP doesn't operate when PTC is not cooled,

Compressor Motor is worn away and causes circuit short and

fire. Therefore, use a properly fixed OLP without fail.

6) Note to Use PTC-Starter

(1) Be careful not to allow over-voltage and over-current.

(2) No Strike

Don't apply a forcible power or strike.

(3) Keep apart from any liquid.

If liquid such as oil or water get to the PTC,

PTC materials may break due to insulation

breakdown of the material itself.

(4) Don't change PTC at your convenience.

Don't disassemble PTC and mold. If the exterior to the

PTC-starter is damaged, resistance value is altered

and it may cause poor starting of the compressor

motor.

(5) Use a properly fixed PTC.

PTC STARTER HERMETIC

TERMINAL

COMPRESSOR

MOTOR

PTC

OVERLOAD

PROTECTOR(O.L.P)

RSIR

RELAY ASSY

Figure 19

CIRCUIT DIAGRAM

-11-

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)

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.

3854JS8003X

TROUBLESHOOTING (Mechanical Part)

-12-

1. COMPRESSOR AND ELECTRIC COMPONENTS

YES

Power

Source.

Remove the Relay Assy

from the Compressor

and measure the voltage

between Terminal C of

Compressor and

Terminals M or S of

Relay Assy

No Voltage.

(Rating Voltage

±10%)

Replace

Relay Assy

Replace

Relay Assy

O.K.

Advise the customer

to use a regular

Trans.

Replace Compressor.

OLP works within

30 sec. in forcible

OLP operation by

turning instant power

on and off.

Components start in

the voltage of Rating

Voltage ±

Applied voltage isn't

in the range of Rating

Voltage

Check the resistance

among M-C, S-C and

M-S in Motor

Compressor.

Check the resistance of

two terminals in PTC-

Starter.

Check if applying

a regular OLP.

Measure minimum

starting voltage after 5

min. for balancing cycle

pressure and cooling the

PTC.

Check the

resistance of

Motor

Compressor.

Check the

resistance of

PTC-Starter.

Check OLP.

Check

starting state.

10% below

-13-

2. RELAY ASSY (PTC AND OLP)

L N

3 2

YES

Normal operation of

Compressor is

impossible or poor. Separate the Relay Assy

from Compressor and

measure the resistance

between M and S with a

Tester or Whistone Bridge.

(Figure 21)

Separate the Relay Assy

from the Compressor and

check the resistance value

between two terminals of

OLP with a Tester.

Observation value is

220V/50Hz : 22Ω ±30%

115V/60Hz : 6.8Ωｱ30%

240V/50Hz : 33Ω ±30%

127, 220V/60Hz :

22Ω±30%

The resistance value is 0

or serveral hundredsΩ.

The value is

∞

Check another

electric components.

Replace Relay Assy.

Check another

electric

components.

Replace

Relay Assy.

22erugiF12erugiF

-14-

3. ANOTHER ELECTRIC COMPONENTS

Cooling is impossible

Cooling ability is poor

Compressor

doesn't run.

Running state of

Compressor is poor.

Check a starting

voltage.

Check if current flows to

the following

components.

a. Thermistor

b. Starting devices

c. OLP

d. Compressor coil

e. Circuit Parts

Low voltage.

Poor contacting.

Shorted or broken.

Poor contacting

or shorted.

Coil shorted.

Poor contacting

or shorted.

Poor contacting

and broken.

Shorted.

Lack of capacit

Coil of motor

Compressor.

Replace

the compressor.

Replace

each component.

Raise the voltage.

Replace

each component.

Cause.

Check if current flows

to starting devices.

Check current flowing

in sub-coil of

Compressor.

Check capacity of OLP.

The items described

above are normal.

Much frost are sticked

to the EVAPORATOR. Shorted.

Replace

the Heater, Sheath

Replace

each component.

Check current flowing

of the following

components.

• THERMISTOR

• FUSE, MELTING

Check current flowing

of the following

components.

• HEATER, SHEATH

Fan motor

doesn't run. Poor contacting.

Coil is shorted.

Replace

each component.

Check current flowing

in SWITCH, DOOR.

Check current flowing in the

MOTOR[MECH], FAN.

-15-

YDEMERDEKCEHCEBOTSTNIOPTNIALPMOC

Cooling is

impossible.

Cooling ability is

poor.

Foods in the

Refrigerator are frozen.

Dew or ice forms in

the chamber of the set.

Dew forms in the

Exterior Case.

Abnormal noise

generates.

To close the door is

not handy.

Ice and foods smell

unpleasant.

• Is the power cord unplugged from the outlet?

• Check if the power switch is set to OFF.

• Check if the fuse of power switch is shorted.

• Measure the voltage of power outlet.

• Check if the set is placed close to wall.

• Check if the set is placed close to stove,

gas cooker and direct rays.

•

Is the ambient temperature high or the room door closed?

• Check if put in is hot.

• Did you open the door of the set too often or

check if the door is closed up?

• Check if the Damper Control is set to "cold-position".

• Are foods placed in cooling air outlet?

• Check if the control is set to "cold-position".

• Is the ambient temperature below 5°C?

• Is liquid food stored?

• Check if put in is hot.

• Did you open the door of the set too often or

check if the door is closed up.

• Check if ambient temperature and humidity

of surroumcling air are high.

• Is there gap in the door packed?

• Are the set positioned in a firm and even place?

• Are any unnecessary objects set in the back

side of the set?

• Check if the Tray Drip is not firmly fixed.

• Check if the cover of mechanical room in below

and front side is taken out.

• Check if the door packing is dirty with filth

such as juice.

• Is the set positioned in a firm and even place?

• Is too much food putted in the set?

• Check if the inside of the set is dirty.

• Did you keep smelly foods without wrapping?

• It smells of plastic.

• Plug to the outlet.

• Set the switch to ON.

• Replace a regular fuse.

• If voltage is low, wire newly.

• Place the set with the space of about 10cm.

• Place the set apart from these heat appliances.

• Make the ambient temperature below.

• Put in foods after cooled down.

• Don't open the door too often and close it firmly.

• Set the control to mid-position.

• Place foods in high temperature section.(Front Part)

• Set the control to "mid-position".

• Set the control to "warm-position".

• Seal up liquid foods with wrap.

• Put in foods after cooled down.

• Don't open the door too often and close it firmly.

• Wipe dew with a dry cloth. This occurrence is

solved naturally in low temperature and humidity.

• Fill up the gap.

• Adjust the Adjust Screw, and position in the firm place.

• Remove the objects.

• Fix it firmly on the original position.

• Place the cover at the original position.

• Clean the door packing.

• Position in the firm place and adjust the Adjust Screw.

• Keep foods not to reach the door.

• Clean the inside of the set.

• Wrap smelly foods.

• The new products smells of plastic, but it is eliminated

after 1-2 weeks.

4. SERVICE DIAGNOSIS CHART

•In addition to the items described left, refer to the followings to solve the complaint.

Check if dew forms in

the Freezer. Replace the

Components of

defrosting circuit.

Check Refrigerating

Cycle.

Check the

Damper Control

Defrosting

is poor.

The cycle

is faulty. Repair the cycle.

Replace the

Damper Control

The operation of

the Damper

Control is poor.

-16-

CAUSE STATE OF

THE SET TEMPERATURE

OF THE

COMPRESSOR

STATE OF THE

EVAPORATOR REMARKS

PARTIAL

LEAKAGE

WHOLE

LEAKAGE

PARTIAL

CLOG

WHOLE

CLOG

MOISTURE

CLOG

COMP-

RESSION

NO COMP-

RESSION

LEAKAGE CLOGGED BY

DUST

DEFECTIVE

COMPRESSION

Freezer room and

Refrigerator don't cool

normally.

Freezer room and

Refrigerator don't cool

normally.

Freeze room and

Refrigerator don't cool

normally.

Freezer room and

Refrigerator don't

cool.

Cooling operation

stops periodically.

Freezer and

Refrigerator don't

cool.

No compressing

operation.

Low flowing sound of Refrigerant

is heard and frost forms in inlet

only.