LG LRSPC2341xx Service Manual

Please observe the following safety precautions in order to
use safely and correctly the refrigerator and to prevent
accident and danger during repair.

1. Be care 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 over loaded, it may cause fire. Please
use its own individual electrical outlet for the refrigerator.

5. Please make sure the outlet is properly earthed,
particularly in wet or damp area.

6. Use standard electrical components when replacing
them.

7. Make sure the hook is 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 the evidence of moisture intrusion in the
electrical components. Replace the parts or mask it
with insulation tapes 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 let the customers repair, disassemble, and

reconstruct the refrigerator for themselves. It may
cause accident, electric shock, or fire.

12. Do not store flammable materials such as ether,
benzene, alcohol, chemicals, gas, or medicine in the
refrigerator.

13. Do not put flower vase, cup, cosmetics, chemicals,
etc., or container with full of water on the top of the
refrigerator.

14. Do not put glass bottles with full of water into the
freezer. The contents shall freeze and break the glass
bottles.

15. When you scrap the refrigerator, please disconnect the
door gasket first and scrap it where children are not
accessible.

WARNINGS AND PRECAUTIONS FOR SAFETY

- 3 -

SPECIFICATIONS

- 6 -

ITEMS SPECIFICATIONS

DIMENSIONS (mm) 890(W)X840(D)X1750(H)
NET WEIGHT (kg) 125
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 (185g)
LUBRICATING OIL FREOL @15G (320 cc)
DRIER 1Ø0.83

ITEMS SPECIFICATIONS

CAPILLARY TUBE MOLECULAR SIEVE XH-7
FIRST DEFROST 4 - 5 Hours
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 (1 EA)
REFRIGERATOR LAMP 40W (1 EA)
DISPENSER LAMP 15W (1 EA)

<Front View> <Plane View>

3. Ref No. : GR-L247

948
890

1750

1720

685

745

796

840

1218.5

1750

SPECIFICATIONS

- 7 -

ITEMS SPECIFICATIONS

DIMENSIONS (mm) 890(W)X755(D)X1750(H)
NET WEIGHT (kg) 120
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 (185g)
LUBRICATING OIL FREOL @15G (320 cc)
DRIER 1Ø0.83

ITEMS SPECIFICATIONS

CAPILLARY TUBE MOLECULAR SIEVE XH-7
FIRST DEFROST 4 - 5 Hours
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 (1 EA)
REFRIGERATOR LAMP 40W (1 EA)
DISPENSER LAMP 15W (1 EA)

<Front View> <Plane View>

4. Ref No. : GR-L207

948
890

1750

1720

600

660

711

755

1133.5

1750

PARTS IDENTIFICATION

- 14 -

Cover PWB

Water Tube

Humidity Switch

Lamp

Shelf

Egg Box
Snack drawer

Vegetable drawer

Vegetable
drawer/Meat drawer

Door rack

Guide bottle

Shelf

Door rack
Wine holder (optional)

Lamp

Shelf

(Steel,

T/Glass)

Drawer

or Shelf

(optional)

Lower Cover

Milk product corner

Door rack

Drawer

Freezer

Compartment

Refrigerator

Compartment

Automatic

ice maker

Door rack

Conversion Switch

(Meats/Vegetables)

Cover Hinge

Frame Display

Dispenser Lamp

Ice & Water

Dispenser Button

3. Ref No. : GR-L247, GR-L207

4. Ref No. : GR-L247, GR-L207

PARTS IDENTIFICATION

- 15 -

Conversion Switch

(Meats/Vegetables)

Cover PWB

Water Tube

Humidity Switch

Lamp

Shelf

Egg Box
Snack drawer

Vegetable drawer

Vegetable
drawer/Meat drawer

Door rack

Guide bottle

Shelf

Door rack
Wine holder (optional)

Lamp

Shelf

(Steel,

T/Glass)

Drawer

or Shelf

(optional)

Lower Cover

Milk product corner

Door rack

Drawer

Freezer

Compartment

Refrigerator

Compartment

Automatic

ice maker

Door rack

Cover Hinge

Frame Display

Dispenser Lamp

Ice & Water

Dispenser Button

1. Monitor Panel

1-1. GR-P247, GR-P207, GR-L247, GR-L207 1-2. GR-C247, GR-C207, GR-B247, GR-B207

2. Description of Function

2-1. Funnction of Temperature Selection

* The temperature can vary ±3 °C depending on the load condition. *( ) : 127V/60Hz, 110~115V/60Hz, 115V/60Hz Rating ONLY.

*< > : TAIBEI

1. When power is initially applied or reapplied after power cut, “Medium” is automatically selected.

2. When the temperature selection switch in the freezer and refrigerator compartments is pressed, the light is on in the
following sequence:
"Medium"

➝ "Medium Max" ➝ "Max" ➝ "Min" ➝ "Medium Min" ➝ "Medium"

3. The temperature setting condition of freezer and refrigerator compartments shall not be indicate in the standard model
(GR-P247, GR-P207, GR-L247, GR-L207, GR-C247, GR-C207, GR-B247, GR-B207) when refrigerator or home bar
door is closed.

MICOM FUNCTION

- 25 -

FRZ

Temp

REF

Temp

SELECT

Max

Min

Function Monitor

Freezer compartment

temperature control Button

Refrigerator compartment

temperature control Button

Dispenser selection button

123455

Max MaxMin

4321

FRZ

Temp

REF

Temp

Division Power Initially On 1st Press 2nd Press 3th Press 4th Press

Change of
Indication Lamp

Temperature
Control

Medium Medium Max Max Min Medium Min

Freezer -19 °C -22 °C -23 °C

-15 °C -17 °C

Control (-18 °C) (-20.5 °C) (-22 °C)

<-19 °C> <-20.5 °C> <-22 °C> <-16.5 °C> <-18 °C>

Refrigeration

3 °C 1.5 °C 0°C

6 °C

4.5 °C

Control (7 °C)

<2 °C> <1 °C> <0 °C> <4.5 °C> <3 °C>

FRZ

Temp

Max

Min

REF

Temp

FRZ

Temp

Max

Min

REF

Temp

FRZ

Temp

Max

Min

REF

Temp

FRZ

Temp

Max

Min

REF

Temp

FRZ

Temp

Max

Min

REF

Temp

2-2. Automatic ice maker

• The automatic ice maker can automatically make 8 pieces of ice cube at a time, 80 pieces a day. But these quantities may

be varied according to various conditions including how many times the refrigerator door opens and closes.

• Ice making stops when the ice storage bin is full.

• If you don’t want to use automatic ice-maker, change the ice-maker switch to ON-OFF.

If you want to use automatic ice-maker again, change the switch to OFF-ON.

NOTE : It is normal that a noise is produced when ice made is dropped into the ice storage bin.

2-3. When ice maker does not operate smoothly

Ice is lumped together

• When ice is lumped together, take the ice lumps out of the ice storage bin, break them into small pieces, and then place

them into the ice storage bin again.

• When the ice maker produces too small or lumped together ice, the amount of water supplied to the ice maker need to

adjusted. Contact the service center.

✻ If ice is not used frequently, it may lump together.

Power failure

• Ice may drop into the freezer compartment. Take the ice storage bin out and discard all the ice then dry it and place it

back. After the machine is powered again, crushed ice will be automatically selected.

The unit is newly installed

• It takes about 12 hours for a newly installed refrigerator to make ice in the freezer compartment.

MICOM FUNCTION

- 26 -

2-4. Control of variable type of freezing room fan

1. To increase cooling speed and load response speed, MICOM variably controls freezing room fan motor at the high speed
of RPM and standard RPM.

2. MICOM only operates in the input of initial power or special freezing operation or load response operation for the high
speed of RPM and operates in the standard RPM in other general operation.

3. If opening doors of freezing / cold storage room or home bar while fan motor in the freezing room operates, the freezing
room fan motor normally operates (If being operated in the high speed of RPM, it converts operation to the standard
RPM). However, if opening doors of freezing room or home bar, the freezing room fan motor stops.

4. As for monitoring of BLDC fan motor error in the freezing room, MICOM immediately stops the fan motor by determining
that the BLDC fan motor is locked or poor if there would be position signal for more than 65 seconds at the BLDC motor.
Then it displays failure (refer to failure diagnosis function table) at the display part of refrigerator, performs re-operation in
the cycle of 30 minutes. If normal operation is performed, poor status is released and refrigerator returns to the initial
status (reset).

2-5. Control of M/C room fan motor

1. The M/C room fan motor performs ON/OFF control by linking with the COMP.

2. It controls at the single RPM without varying RPM.

3. Failure sensing method is same as in fan motor of freezing fan motor (refer to failure diagnosis function table for failure
display).

2-6. Door opening alarm

1. Buzzer generates alarm sound if doors are not closed even when more than a minute consecutively has passed with
doors of freezing / cold storage room or home bar opened.

2. Buzzer rings three times in the interval of 0.5 second after the first one-minute has passed after doors are opened and
then repeats three times of On/Off alarm in the cycle of every 30 seconds.

3. If all the doors of freezing / cold storage room or home bar are closed during door open alarm, alarm is immediately
released.

2-7. Ringing of button selection buzzer

1. If pressing the front display button, “Ding ~ “ sound rings.

2-8. Ringing of compulsory operation, compulsory frost removal buzzer

1. If pressing the test button in the main PCB, “Phi ~ “ sound rings.

2. In selecting compulsory operation, alarm sound is repeated and completed in the cycle of On for 0.2 second and Off for

1.8 second three times.

3. In selecting compulsory frost removal, alarm sound is repeated and completed in the cycle of On for 0.2 second , Off for

0.2 second, On for 0.2 second and Off for 1.4 second three times.

MICOM FUNCTION

- 27 -

Doors of freezing /
cold storage room

or home bar

BUZZER

Closing

Opening

Within

a minute

A minute

30

seconds30seconds30seconds

Opening

Closing Closing

3 Times 3 Times 3 Times 3 Times

2-9. Frost removal function

1. Frost removal is performed whenever total operation time of compressor becomes 7 ~ 7.5 hour.

2. In providing initial power (or returning power failure), frost removal starts whenever total operation time of compressor
becomes 4 ~ 4.5 hour.

3. Frost removal is completed if temperature of a frost removal sensor becomes more than 5°C after starting frost removal.
Poor frost removal is not displaced if it does not arrive at 5°C even if two hours have passed after starting frost removal.

4. No removal is done if frost removal sensor becomes poor (snapping or short-circuit).

2-10. Sequential operation of built-in product

Built-in products such as compressor, frost removal heater, freezing room fan, Cooling Fan and step motor damper are
sequentially operated as follows for preventing noise and part damage occurred due to simultaneous operation of a lot of
parts in applying initial power and completing test.

MICOM FUNCTION

- 28 -

Function Load Operation Sequence Remark

In applying Initial power TEST MODE

When temperature
of a frost removal
sensor becomes
more than 25°C
(In purchase,
movement)

If error occurs
during operation,
initial operation is
not done.

If pressing switch
once more in the
test mode 2 or
temperature of a
frost removal
sensor is more
than 5°C, it
immediately
returns to the test
mode for initial
operation
(COMP operates
after 7 minutes).

When
temperature of a
frost removal
sensor becomes
less than 25°C
(In power failure,
service)

Test mode 1
(Compulsory
function)

Test mode 2
(Compulsory frost
removal)

POWER

ON

COMP

ON

COMP

ON

WATER

TANK

HEATER

ON

F-FAN

&

C-FAN

ON

F-FAN

&

C-FAN

ON

F-FAN

&

C-FAN

ON

F-FAN

&

C-FAN

OFF

WATER

TANK

HEATER

OFF

STEP

MOTOR

DAMPER

ON

STEP

MOTOR

DAMPER

OPEN

STEP

MOTOR

DAMPER

CLOSE

HOME

BAR

HEATER

ON

POWER

ON

FROST

REMOVAL

HEATER

ON

HOME

BAR

HEATER

OFF

HOME

BAR

HEATER

ON

TEST

S/W

(Press

Once)

COMP

ON

TEST

S/W

(Press

2 times)

COMP

OFF

0.5

sec.

0.3

sec.

0.3

sec.

0.3

sec.

0.5

sec.

8

sec.

0.3

sec.

5

sec.

FROST

REMOVAL

HEATER

OFF

FROST

REMOVAL

HEATER

ON

5

sec.

0.3

sec.

WATER

SUPPLY

&

DISPENSE

HEATER

ON

5

sec.

0.3

sec.

0.3

sec.

0.3

sec.

0.3

sec.

0.3

sec.

0.3

sec.

0.3

sec.

0.3

sec.

OTHER

LOAD

OFF

2-15. Failure Diagnosis Function

1. Failure diagnosis function is function to facilitate service when nonconforming matters affecting performance of product
during use of product.

2. In occurrence of failure, pressing the function adjustment button does not perform function and only alarm sound (“Ding~”) rings.

3. If nonconforming matters occurred are released during display of failure code, MICOM returns to the original state (Reset).

4. Failure code is displayed on the display part of setting temperature for the freezing room and the display part of setting
temperature for the cold storage room of LED, which are placed at the display part of a refrigerator. All the LED graphics
other than a failure code are turned off.

MICOM FUNCTION

- 29 -

: On : Off ●● : Normal

1

2

3

4

5

6

7

8

9

10

Note 1)

Note 1)

Note 1)

Note 1)

Trouble Code Indicator

F4 F3 F2 F1

No. Trouble items

Troubles

Freezer

Fan

Compressor

Stepping

Motor Damper

Defrost

Heater

Cooling

Fan

Operation Status During Trouble

Abnormal freezer(F)
sensor

Abnormal
refrigerator sensor
1(R1) (upper shelf
in the refrigerator)

Abnormal
refrigerator sensor
2(R2) (lower shelf in
the refrigerator)

Abnormal defrost
sensor

Faulty defrost

Abnormal freezer
BLDC fan motor

Abnormal cooling
BLDC fan motor

Abnormal room
temperature sensor

Abnormal icemaker
sensor

Abnormal icemaker
unit

Freezer sensor is cut or short­circuited

Upper shelf refrigerator sensor is
cut or short-circuited.

Lower shelf refrigerator sensor is
cut or short-circuited.

Defrost sensor is cut or short­circuited

Defrost heater and temperature
fuse are cut and disconnected.
(Indicates after at least four hours
when troubles occur)

No position-signal over 65s when
fan motor operate

No position-signal over 65s when
fan motor operate

Room temperature sensor (RT­Sensor) is cut or short-circuited.

Icemaker sensor is cut or short­circuited.

Fauity motor or hall IC in
icemaker unit. Lead wire is cut or
shotr-circuited. Faulty motor
driving circuits

Standard

RPM

Standard

RPM

Standard

RPM

Standard

RPM

Standard

RPM

OFF (check

opeation per
30min. If normal
condition, reset)

●●

●●

●●

Standard

RPM

●●

●●

●●

●●

●●

●●

OFF (check
opeation per

30min. If normal

condition, reset)

●●

●●

●●

15 min on/

15 min off

●●

●●

●●

●●

●●

●●

●●

●●

●●

●●

●●

●●

No defrost

●●

●●

●●

●●

●●

●●

●●

●●

●●

●●

●●

●●

●●

●●

●●

Open for
10min

Close for

15min

Note1) The abnormality of RT-Sensor, R2-Sensor Icemaker Unit, and Icemaker-Sensor is not indicated in trouble code but it

is indicated when checking LED (when pressing both freezer temperature control button and refrigerator temperature
control button for more than 1 second at the same time).

RT-Sensor Normal : A LED on, Abnormal : A LED Off.
R2-Sensor Normal : B LED on, Abnormal : B LED Off.
Icemaker Unit Normal : C LED on, Abnormal : C LED Off.
Icemaker Sensor Normal : D LED on, Abnormal : D LED Off.

2-16. Test Function

1. The purpose of test function is to check function of the PCB and product and to search for the failure part at the failure
status.

2. Test button is placed on the main PCB of refrigerator (test switch), and the test mode will be finished after maximum 2
hours irrespective of test mode and then is reset to the normal status.

3. Function adjustment button is not perceived during performance of test mode but only warning sounds ring.

4. In finishing test mode, always pull the power cord out and then plug-in it again for the normal state.

5. If nonconforming contents such as sensor failure are found during performance of test mode, release the test mode and
display the failure code.

6. Even if pressing the test button during failure code display, test mode will not be performed.

MICOM FUNCTION

- 30 -

The rest of LEDs
are all on.

Test 1

Test 2

Normal

Conditions

MODE HANDLING CONTENTS REMARKS

Press TEST s/w once.

Press TEST s/w once at
TEST1 conditions.

Press TEST s/w once at
TEST2 conditions.

1. Compressor continuously operates.

2. Freezer fan (high speed RPM), Cooling fan
continuously operates.

3. Defrost heater is off.

4. All display LEDs are on.

5. Stepping motor damper is in open
conditions. (baffle is open)

1. Compressor is off

2. Freezer fan, Cooling fan are off.

3. Defrost heater is on.

4. All display LEDs are off. (Freezer room “2”
LED and Refrigerator room “2” LED are
only ON.)

5. Stepping motor damper is in closed. (baffle
is closed).

Returns to the initial conditions.

- Forced operate.

- Freezer fan is off when
door is opened.

- It returns to normal
conditions when the
temperature of defrost
sensor is above 5°C.

- Forced defrost.

Compressor starts after
seven minutes delay.

3. PWB parts diagram and list

3-1. PWB Ass’y, main part diagram

1. GR-P247, L247, P207, L207

EXPLATION FOR MICOM CIRCUIT

- 50 -

3-2. Parts list

1. GR-P247, L247, P207, L207

EXPLATION FOR MICOM CIRCUIT

- 52 -

EXPLATION FOR MICOM CIRCUIT

- 53 -

WATER

SUPPLY

S/W

3-3. DISPLAY ASSY part diagram

1. GR-P247, L247, P207, L207

EXPLATION FOR MICOM CIRCUIT

- 56 -

DOUBLE SIDE TAPE
SPREAD SHEET

3-4. DISPLAY circuit diagram

1. GR-P247, L247, P207, L207

- 58 -

Parts without ( ) mark means SMD parts.

Reception

Transmission

4. PWB circuit diagram - PWB circuit diagram may vary a little bit depending on actual condition.

1. GR-P247, L247, P207, L207

EXPLATION FOR MICOM CIRCUIT

- 60 -

EXPLATION FOR MICOM CIRCUIT

- 61 -

1. TROUBLE SHOOTING

TROUBLE DIAGNOSIS

- 72 -

CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK

1. Faulty start

1) No power on outlet.

2) No power on cord.

3) Shorted start circuit.

4) During defrost.

* Measuring instrument :

Multi tester

■Check the voltage.
If the voltage is within ±85%
of the rated voltage, it is OK.

■ Check the terminal
movement.

■

Check both terminals of
power cord.
Power conducts : OK.
No power conducts : NG

■ Check both terminals of
O.L.P.
If power conducts : OK.
If not : NG.

■ Check the resistance of both

terminals.
At normal temperature 6 :
OK.
If disconnected : ∞.

Bad connection between adapter and outlet. (faulty adapter)

The Inner diameter of adapter.
The distance between holes.
The distance between terminals.
The thickness of terminal.

Bad connection between plug and adapter (faulty plug).

The distance between pins.
Pin outer diameter.

No power on
power cord.

O.L.P is off.

No electric power on compressor. - Faulty compressor .

Faulty PTC.

Disconnected copper wire.

Internal electrical short.
Faulty terminal contact.

Disconnected.

Capacity of O.L.P is small.
Characteristics of O.L.P is bad.
Bad connection.

Power is
disconnected.

Inner Ni-Cr wire blows out.
Bad internal connection.
Faulty terminal caulking (Cu wire is cut).
Bad soldering.

Weak connection.
Short inserted cord length.
Worn out tool blade.

Loose contact.

- Large distance between
male terminal.

- Thin female terminal.

T erminal disconnected.
Bad sleeve assembly .

Power cord is disconnected.
Faulty soldering.

Start automatic defrost.
Cycle was set at defrost when the refrigerator

was produced.

Power does not conduct. - Damage.
Bad characteristics. - Initial resistance is big.
Bad connection with

compressor.
Bad terminal connection.

T oo loose.
Assembly is not possible.

TROUBLE DIAGNOSIS

- 73 -

CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK

2. No cooling.

2) Refrigeration system is clogged.

■Check the clogged
evaporator by heating (as
soon as the cracking sound
begins, the evaporator start
freezing)

■ The evaporator does not cool

from the beginnig (no evidece
of misture attached).
The evaporator is the same
as before even heat is
applied.

Moisture
clogged.

No electric
power on
therm­ostat.

Weld joint
clogged.

Drier cloggeing.

Foreign material clogging.

Residual moisture

in the evaporator.

Residual moisture.

Insufficient drier
capacity.

Residual moisture
in pipes.

Moisture penetration - Leave it in the air. - Moisture penetration.
into the refrigeration oil.

Caps are missed.

Air blowing.

During transportation.
During work.

Not performed.
Performed.

T oo short time.
Low air pressure.
Less dry air.

Air Blowing.

Leave it in the air.
Caps are missed.

Short pipe insert.
Pipe gaps.

T oo much solder .

T oo large.
Damaged pipes.

Not dried in the compressor.
Elapsed more than 6 months after drying
Caps are missed.
No pressure when it is open.

During rest time.
After work.

Compressor cap is disconnected.
Foreign materials are in the pipe.

Not performed.
T oo short.
Impossible moisture

confirmation.
Low air pressure.

Dry drier - Drier temperature.
Leave it in the air.

The capillary tube inserted depth. - T oo much.
Capillary tube melts. - Over heat.
Clogged with foreign materials.

Reduced cross section by cutting. - Squeezed.

Desiccant powder.
Weld oxides.
Drier angle.

Check on package
condition.

Good storage after
finishing.

TROUBLE DIAGNOSIS

- 74 -

CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK

3. Refrigeration
is weak.

Plate
heater

Cord
heater

1) Refrigerant Partly leaked.

2) Poor defrosting capacity.
Drain path (pipe) clogged.

Defrost heater does not
generate heat.

Weld joint leak.
Parts leak.

Inject P/U into drain hose.

Foreign materials
penetration.

Cap drain is not disconnected.

Inject through the
hole.

Seal with drain.

P/U lump input.
Screw input.
Other foreign materials

input.

Parts
disconnected.

Wire is cut.

- Heating wire.

- Contact point
between heating
and electric wire.

Dent by fin evaporator.
Poor terminal contacts.

Wire is cut.

- Lead wire.

- Heating wire.

- Contact point
between heating and
electric wire.

Heating wire is corroded

- Water penetration.

Bad terminal connection.

■Check visually.

■Check terminal

Conduction: OK.
No conduction: NG.
If wire is not cut, refer to
resistance.
P=Power
V=Voltage
R=Resistance

V

2

P= —

R

V

2

R= —

P

- 75 -

TROUBLE DIAGNOSIS

CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK

3. Refrigeration
is weak.

3) Cooling air leak.

4) No cooling air circulation.

Residual
frost.

No automatic defrosting.
Defrost does not return.

Bad gasket adhestion

Door sag.

Faulty fan motor.

Weak heat from heater.

Bad heater assembly .

T oo short defrosting time. Defrost Sensor.

- Faulty characteristics.
Seat-D(missing, location. thickness).

Structural fault. Gasket gap.

Air inflow through the fan motor.
Bad insulation of case door.

Sheath Heater - rated.
Heater plate - rated.
Heater cord-L - rated.

Heater plate

Heater cord-L

Gap.
Bad attachment.
Contraction.

Bad adhesion.
Weak binding force at hinge.

Fan motor.

Door switch.

Self locked.
Wire is cut.
Bad terminal contact.

Contact distance.
Button pressure.
Melted contact.
Contact.

Poor door
attachment.
Door liner
(dimension).
Contraction inner
liner.
Misalignment.
Bad terminal
connection.
P/U liquid leak.

Faults.

Refrigerator and freezer switch reversed.
Button is not pressed.

No contact to drain.
Loosened stopper cord.

Not contact to the
evaporator pipe.

Location of assembly
(top and middle).

■Check the fan motor
conduction: OK.
No conduction: NG.

TROUBLE DIAGNOSIS

- 76 -

CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK

3. Refrigeration
is weak.

4) No cooling air circulation.

5) Compressor capacity.

6) Refrigerant
too much or too little.

7) Continuous operation

- No contact of temperature controller. - Foreign materials.

8) Damper opens continuously.

Foreign materials
jammed.

Failed sensor. - Position of sensor.
Characteristics

of damper.

9) Food storing place. - Near the outlet of cooling air.

Faulty fan motor.

Small cooling air
discharge.

Fan is
constrained.

Insufficient
motor RPM

Faulty fan.

Shorud. Bent.
Ice and foreign materials on rotating parts.

Fan shroud contact. - Clearance.
Damping evaporator contact.
Accumulated residual frost.

Fan misuse.
Bad shape.
Loose connection. - Not tightly connected.
Insert depth.

Rating misuse.
Small capacity.
Low valtage.

Malfunction of charging cylinder.
Wrong setting of refrigerant.
Insufficient compressor. - Faulty compressor .

Fan overload. - Fan misuse.
Bad low termperature RPM characteristics.
Rated power misuse.
Low voltage.

P/U liquid dump.
EPS water sediment.
Screw.

Bad characteristics of its own temperatue.
Parts misuse.
Charge of temperature - Impact.

characteristics.

■Check visually after
disassembly.

■Check visually after
disassembly.

TROUBLE DIAGNOSIS

- 77 -

CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK

4. Warm
refrigerator
compartment
temperature.

5. No automatic
operation.
(faulty

contacts.)

6. Dew and
ice formation.

1) Colgged cooling path.

2) Food storate.

1) Faulty temperature sensor in freezer or refrigerator compartment.

2) Refrigeration load is too much.

3) Poor insulation.

4) Bad radiation.

5) Refrigerant leak.

6) Inadequate of refrigerant.

7) Weak compressor discharging power.

8) Fan does not work.

9) Button is positioned at "strong."

1) Ice in freeezer compartment.

2) Condensation in the refrigerator compartment.

3) Condensation on liner foam.

P/U liquid leak.
Foreign materials. –– P/U dump liquid.

Faulty contact.
Faulty temperature characteristics.

External air inflow. –– Rubber motor assembly direction(reverse).
Door opens
but not closes.

Gap around gasket. –– Contraction, distortion, loose, door twisted, corner not

fully inserted.

Food vapor. –– Storing hot food. –– Unsealed food.

Door opens
but not closes.

Gasket gap.

Cool air leak
and transmitted.

High ambient temperature.
Space is secluded.

Different rating.
Small capacity.

Store hot food.
Store too much at once.
Door open.
Packages block air flow.

Food.
Frequent opening and closing.

Cool air leak.
Poor door close. – Partly opens.

T oo much food.
Hot food.

Weak door closing power.
Stopper malfunction.
Door sag.
Food hinders door closing.

Insufficient closing.
Door sag.
Food hinders door closing.

T oop table part.
Out plate R/L part.

Not fully filled.

Flange gap. –– Not sealed.
Gasket gap.

■Inspect parts measurements
and check visually.

TROUBLE DIAGNOSIS

- 78 -

CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK

6. Dew and
ice formation.

7. Sounds

4) Dew on door.
Dew on the duct door. - Duct door heater is cut.
Dew on the dispense

recess.

Dew on the door surface. Not fully filled. Surface.

Cormer.

P/U liquid contraction.

Dew on the
gasket surface.

5) Water on the floor.
Dew in the refrigerator compartment.
Defrosted water overflows. Clogged discharging hose.
Discharging hose Evaporation tray located at wrong place.
location.
Tray drip. Damaged.

Breaks, holes.
Small Capacity.

Position of drain.

1) Compressor compartment operating sounds.
Compressor sound Sound from machine itself.

inserted. Sound from vibration.

Restrainer.
Rubber Too hard.
seat. Distorted.

Aged.
Burnt.

Stopper. Bad Stopper Not fit

assembly. (inner

diameter

of stopper).
Tilted.
Not

Compressor base not connected.
Bad welding compressor stand(fallen).
Foreign materials in the compressor

compartment.

O.L.P.

sound.

Chattering

sound.

Insulation paper vibration.

Capacitor noise.

Pipe contacts each other. – Narrow interval.

Pipe sound. No vibration damper. Damping rubber-Q.

Damping rubber-S.

Capillary tube unattached.

Recess Heater is cut.
Duct door is open. / Foreign material clogging.

Bad wing adhesion. Wing sag(lower part).

Door liner shape mismatch.

Corner. T oo much notch.

Broken.

Home Bar heater is cut.

Liquid shortage.
Liquid leak.

TROUBLE DIAGNOSIS

- 79 -

CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK

7. Sounds

1) Compressor compartment operating sounds.
Transformer

sound.

Drip tray vibration sound.

Back cover machine sound.

Condenser drain sound.

2) Freezer compartment sounds.
Fan motor sound.

Sounds from fan
contact.

Unbalance fan sounds.

Motor shaft
contact sounds.

Resonance.
Evaporator noise.

3) Bowls and bottles make contact on top shelf.

4) Refrigerator roof contact.

5) Refrigerator side contact.

6) Insufficient Lubricants on door hinge.

Its own fault. –– Core gap.
Bad connection. –– Correct screw connection.

Bad assembly.
Distortion.
Foreign materials inside.

Bad connection.
Partly damaged.

Not connected.
Bad pipe caulking.

Normal operating sound.
Vibration sound.

Aged rubber seat.
Bad torque for assembling motor
bracket.

Fan guide contact.
Shroud burr contact.
Damping evaporator contact.
Residual frost contact.

Unbalance.

Ice on the fan. –– Air intake (opposite to motor

rubber assembly.)

Supporter disorted.
Tilted during motor assembly .

Evaporator pipe contact. –– No damping evaporator.
Sound from refrigerant. –– Stainless steel pipe shape in

accumulator.
Sound from fin evaporator and pipe during expansion
and contraction.

Poor treatment Cord heater.
Narrow evaporator interval.

Surface machining conditions.
Fan distortion.
Misshappen.
Burr.

TROUBLE DIAGNOSIS

- 80 -

CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK

8. Faulty lamp
(freezer and

refrigerator
compartment).

9. Faulty internal
voltage(short).

1) Lamp problem. Filament blows out.
Glass is broken.

2) Bad lamp assembly. Not inserted.
Loosened by vibration.

3) Bad lamp socket.

Disconnection. Bad soldering.

Bad rivet contact.

Short. Water penetration. Low water

level in tray.

Bad elasticity of contact.
Bad contact(corrosion).

4) Door switch. Its own defect.

Refrigerator and freezer switch is reversed.
Travlel distance.
Bad connection.
Bad terminal contact.
P/U liquid leak..

1) Lead wire is damaged.

Wire damage when assembling P.T.C. Cover.
Outlet burr in the bottom plate.
Pressed by cord heater. lead wire, evaporator pipe.

2) Exposed terminal.

Compressor Compartment terminal. - Touching other

components.

Freezer compartment terminal. - Touching evaporator pipe.

3) Faulty parts.

Transformer. Coil contacts cover.

Welded terminal parts contact cover.
Compressor. Bad coil insulation.
Plate heater.
Melting fuse. Sealing is broken. Moisture penetration.
Cord heater. Pipe damaged. Moisture penetration.

Bad sealing.
Sheath heater.

■Connect conduction and
non-conduction parts and
check with tester.
Conduction: NG.
Resistance∞: OK.

TROUBLE DIAGNOSIS

- 81 -

CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK

10. Structure,
appearance
and others.

1) Door foam.
Sag.

Noise during
operation.

Malfunction.

2) Odor.
Temperature of

refrigerator
compartment.

Deodorizer.

Food Storage.

Others.

Weak torque of
hinge connection.

Weak gasket
adhesion.
Fixed tape.

Hinge interference.

Not closed Interference between door liner and inner liner.
Refrigerator
compartment is
opened when freezer
compartment is
closed (faulty stopper).

High. Faulty damper control.

Button is set at "weak".
Door is open (interference by
food).

No deodorizer.
Poor capacity.

Seal condition.
Store special odorous food.
Long term storage.

Odors from chemical procucts.

Bigger door foam.
Hinge-Pin tilted-Poor flatness.
No washer.
No grease and not enough
quantity.

Stopper worn out.
Bad freezer compartment door
assembly.
No stopper.

Bolt is loosened during
transportaion.
Not tightly fastened.
Screw worn out .
Adhesion surface.

Not well fixed.

2. Faults

2-1. Power

2-2. Compressor

TROUBLE DIAGNOSIS

-82-

Problems Causes Checks Measures Remarks

No power on - Power cord cut. - Check the voltage with tester. -Replace the components.

outlet. - Faulty connector insertion. - Check visually. -Reconnect the connecting parts.

- Faulty connection between plug - Check visually. - Reconnect the connecting parts.

and adapter.

Fuse blows out. - Short circuit by wrong connection. - Check the fuse with tester - Find and remove the cause of - Replace with rated

- Low voltage products are or visually. problem(ex. short, high voltage, fuse after confirming

connected to high voltage. - Check the input volt are with tester low voltage). its specification.

- Short circuit by insects. (between power cord and products). - Replace with rated fuse.

- Electricity leakage. - Check the resistance of power cord

■ If fuse blowns out

- High voltage. with testerf (if it is 0Ω, it is shorted). frequently, reconfirm

- Short circuit of components the cause and prevent.

(tracking due to moisture and dust

penetration).

Problems Causes Checks Measures Remarks

Compressor - Faulty PTC. - Check the resistance. - If resistance is infinite, replace it

does not Vlaue:∞ is defective. with new one.

operate. - If it is not infinite, it is normal.

- Check other parts.

- Compressor is frozen. - If compressor assembly parts are - During forced operation:

normal(capacitor, PTC, OLP), - Operates: Check other parts.

apply power directly to the - Not operate: Replace the frozen

compressor to force operation. compressor with new one, weld,

evacuate, and recharge refrigerant.

OLP It starts as soon as it is • Refer to weld repair procedures.

contacted.

Auxiliary winding

Main winding

Power

2-3. Temperature

TROUBLE DIAGNOSIS

-83-

Problems Causes Checks Measures Remarks

High Poor cool air circulation due to faulty - Lock –– Check resistance with a - Replace fan motor.

temperature fan motor. tester.

in the freezer 0Ω: short.

compartment. ∞Ω: cut. - Reconnect and reinsert.

- Rotate rotor manually and check

rotation.

- Wire is cut.

- Bad terminal contact: Check - Maintain clearance and remove ice

terminal visually. (Repair and/or replace shroud if fan

- Fan constraint. – Fan shroud is constrained by shroud

contact: Confirm deformation).

visually.

– Fan icing:

Confirm visually.

Faulty fan motor due to faulty door - Iced button (faulty) operation: - Confirm icing causes and repair.

switch operation. Press button to check - Replace door switch.

- Faulty button pressure and contact:

Press button to check operation.

- Door cannot press door switch - Door sag: fix door.

button: Check visually. - Door liner bent:replace door or

attach sheets.

Bad radiation conditions in - Check the clearance between the - Keep clearance between - The fan may be

compressor compartment. refrigerator and wall (50 mm in refrigerator and walls (minimum broken if cleaning

minimum). 50mm). performs while the

- Check dust on the grill in - Remove dust and contaminants refrigerator is on.

compressor compartment. from grill for easy heat radiation.

- Check dust on the coils condenser. - Remove the dust with vacuum

cleaner from the coils condenser

while the refrigerator is off.

2-4. Cooling

TROUBLE DIAGNOSIS

-84-

Problems Causes Checks Measures Remarks

High Refrigerant leak. Check sequence

Weld the leaking part, recharge the Drier must be replaced.

temperature 1. Check the welded parts of the refrigerant.

in the freezer drier inlet and outlet and drier

compartment. auxiliary in the compressor

compartment (high pressure side).

2. Check the end of compressor

sealing pipe (low pressure side).

3. Check silver soldered parts.

(Cu + Fe / Fe + Fe).

4. Check bending area of wire

condenser pipe in compressor

compartment (cracks can

happen during bending).

5. Check other parts (compressor

compartment and evaporators in

freezer compartment).

Shortage of refrigerant. Check frost formation on the surface - Find out the leaking area, repair, Drier must be replaced.

of evaporator in the freezer evacuate, and recharge the

compartment. refrigerant.

- If the frost forms evenly on the - No leaking, remove the remaining

surface, it is OK. refrigerant, and recharge new

- If it does not, it is not good. refrigerant.

TROUBLE DIAGNOSIS

-85-

Problems Causes Checks Measures Remarks

High Cycle pipe is clogged. Check sequence. - Heat up compressor discharging Direr must be replaced.

temperature in 1. Check temperature of condenser weld joints with touch, disconnect

the freezer manually. the pipes, and check the clogging.

compartment. If it is warm, it is OK. Remove the causes of clogging,

If it is not, compressor discharging weld, evacuate, and recharge

joints might be clogged. the refrigerant.

2. Manually check whether hot line - If it's warm, it's OK. If it's not,

pipe is warm. condenser discharging line weld

If it is warm, it's OK. joints might be clogged.

If it is not, condenser outlet weld Disconnect with torch, remove the

joints might be colgged. causes, evacuate, and recharge

seal refrigerant.

Leak at loop pipe weld joint Check sequence. Replace the compressor, weld, Drier must be replaced.

(discharge) in compressor. 1. Manually check whether evacuate, and recharge refrigerant.

condenser is warm, It is not warm

and the frost forms partly on the

evaporator in the freezer

compartment.

Faulty cooling fan in the compressor Check sequence. - Replace if motor does not operate.

compartment. 1. Check cooling fan operation. - If fan is disconnected, check fan

2. Check that cooling fan is damage and reassemble it.

disconnected from the motor. ■ Refer to fan motor disassembly

and assembly sequence.

2-5. Defrosting failure

TROUBLE DIAGNOSIS

-86-

Problems Causes Checks Measures Remarks

No defrosting. Heater does not generate heat as 1. Check the resistance of heater. Heating wire is short and wire is cut. Seal the lead wire with

the heating wire is cut or the circuit 0Ω: Short. ∞Ω: Cut. • Parts replacement: Refer to parts insulation tape and heat

is shorted. Tens to thousands Ω: OK. explanations. contraction tube if the cut

1) Heating wire is damaged when 2. Check the resistance between lead wire is accessible to

inserting into the evaporator. housing terminal and heater repair.

2) Lead wire of heater is cut. surface.

3) Heating wire at lead wire contacts 0Ω: Short. ∞Ω: Cut.

is cut. Tens to thousands Ω: Short.

Sucking duct and discharging hole 1. Confirm foreign materials. In case 1) Push out impurities by inserting

are clogged: of ice, insert the copper line copper wire.(Turn off more than

1. Impurities. through the hole to check. 3hours and pour in hot water if

2. Ice. 2. Put hot water into the drain frost is severe.)

(check drains outside). 2) Put in hot water to melt down frost.

3) Check the water outlet.

4) Push the heater plate to sucking

duct manually and assemble the

disconnected parts.

Gap between Sucking duct and 1. Confirm in the Sucking duct. 1) Turn off the power, confirm

Heater plate(Ice in the gap). impurities and ice in the gap, and

supply hot water until the ice in the

gap melts down.

2) Push the Heater plate to drain

bottom with hand and assemble

the disconnected parts.

Wrong heater rating (or wrong 1. Check heater label. Faults:replace.

assembly). 2. Confirm the capacity after - How to replace: Refer to main parts.

substituting the resistance value

into the formula.

(V: Rated voltage of user country)

(R: Resistance of tester[Ω])

Compare P and lavel capacity.

Tolerance: ±7%

V

2

P= ––

R

TROUBLE DIAGNOSIS

-87-

Problems Causes Checks Measures Remarks

No defrosting Melting fuse blows out. - Check melting fuse with tester. - Faullty parts: parts replacement.

1) Lead wire is cut. If 0Ω: OK. - Check wire color when maeasuring

2) Bad soldering. If ∞Ω: wire is cut. resistance with a tester.

Ice in the Sucking duct. 1. Check the inner duct with mirror. 1) Turn power off.

1) Icing by foreign materials in the 2) Raise the front side(door side),

duct. support the front side legs, and let

2) Icing by cool air inflow through the ice melt naturally. (If power is

the gap of heater plate. on, melt the frost by forced

3) Icing by the gap of heater plate. defrosting.)

2. Check by inserting soft copper 3) Reassemble the heater plate.

wire into the duct (soft and thin

copper not to impair heating wire).

Bad cool air inflow and discharge, 1. Turn on power, open or close the 1) Check the faulty connector of

and bad defrosting due to faulty door, check that motor fan housing and reassemble wrongly

contact and insertion (bad connector operates (If it operates, motor fan assembled parts.

insertion into housing of heater, is OK). 2) If the parts are very damaged,

melting, fuse and motor fan). 2. Disconnect parts in the refrigerator remove the parts and replace it

compartment, check the connection

with a new one.

around the housing visually,

defrost, and confirm heat generation

on the heater. Do not put hands on

the sheath heater.

3. Check the parts which have faults

described in 1, 2 (mechanical

model: disconnect thermostat

from the assembly).

2-6. Icing

TROUBLE DIAGNOSIS

-88-

Problems Causes Checks Measures Remarks

Icing in the 1) Bad circulation of cool air. - Check the food is stored properly - Be acquainted with how to use. - Check the defrost

refrigerator - Clogged intake port in the (check discharge and intake port - Sealing on connecting parts. related parts if problem

compartment. refrigerator compartment. are clogged). - Check the damper and replace is caused by faulty

- Damper icing. - Sealing is not good. - Check icing on the surface of it if it has defects. defrosting.

- Pipe icing. - Too much food is stored and clogs baffle and cool air path (pipe) after - Check defrost. (After forced

- Discharging the discharge port. dissembling the container box. defrosting, check ice in the

pipe icing. - Bad defrosting. - Check icing at intake ports of evaporator and pipes.)

freezer and refrigerator

compartment.

2) Faulty door or refrigerator - Check gasket attached conditions. - Correct the gasket attachment - Replacement should

compartment. - Check door assembly conditions. conditions and replace it. be done when it

- Faulty gasket. - Door assembly and replacement. cannot be repaired.

- Faulty assembly.

3) Overcooling in the refrigerator - Check refrigerator compartment - Replace faulty parts.

compartment. is overcooled (when button

- Faulty damper in the refrigerator pressed on "weak").

compartment. - Check parts are faulty.

- Faulty MICOM (faulty sensor)

4) Bad defrosting - Check frost on the evaporator - Check parts related to defrosting. - Moisture cannot frost

- Heater wire is cut. after dissembling shroud and fan - Check defrosting. (Check ice on the on the evaporator but

- Defective defrost sensor. grille. evaporator and pipe.) can be sucked into the

- Defrosing cycle. - Check ice on intake port of freezer refrigerator, being

and refrigerator compartment. condensed and iced,

interferes with cool air

circulation, and

suppresses sublimation.

5) Customers are not familiar with - Check food interferes with door - Be acquainted with how to use.

this machine. closing.

- Door opens. - Check ice on the ceilings.

- High temperature, high moisture,

and high load.

TROUBLE DIAGNOSIS

-89-

Problems Causes Checks Measures Remarks

Ice in the freezer 1) Bad cooling air circulation. - Check food storage conditions - Be acquainted with how to use. - Check the parts related

compartment. - Intake port is colgged in the freezer visually.(Check clogging at intake - Check defrost (Check ice on the to defrosting if the

- Surface of fan compartment. and discharging port of cooling air.) evaporator and pipes after forced problem is caused by

grille. - Discharging port is Clogged. - Check food occupation ratio in defrosting). the faulty defrosting.

- Wall of freezer - Too much food is stored. volume(Less than 75%).

compartment. - Bad defrosting. - Check frost on the evaporator after

- Cool air dissembling shroud and fan grille.

discharging port.

- Check icing at intake port of

- Basket(rack) refrigerator compartment.

area.

- Food surface. 2) Bad freezer compartment door - Check gasket attachment - Correct the gasket attachement - Replace when it can not

- Icing in the - Faulty gasket conditions. conditions and replace it. be repaired.

shute. - Faulty assembly - Check door assembly conditions. - Door assembly and replacement.

3) Over freezing in the freezer - Refrigerator operates pull down. -Replace defective parts.

compartment. (Check if it is operated

- Faulty MICOM. intermittently)

- The Temperature of freezer

compartment is satisfactory, but

over freezing happens in the

refrigerator compartment even

though the notch is set at "weak".

4) Bad defrosting. - Check frost on the evaporator after - Check parts related to defrosting.

- Heater wire is cut. dissembling shroud and grille. - Check defrosting.(Check ice on the

- Faulty defrost sensor. - Check ice on the intake port in the evaporator and pipes after forced

- Defrosting cycle refrigerator compartment. defrosting.)

5) User is not familiar with how to - Check food holds door open. - Be acquainted with how to use.

use. - Check ice on the ice tray.

- Door opens.

- High moisture food(water) is stored.

2-7. Sound

TROUBLE DIAGNOSIS

-90-

Problems Causes Checks Measures Remarks

"Whizz" sound 1. Loud sound of compressor 1.1 Check the level of the 1) Maintain horizontal level.

operation. refrigerator. 2) Replace rubber and seat if they

1.2 Check the rubber seat are sagged and aged.

conditions (sagging and aging). 3) Insert rubber where hand contact

reduces noise in the pipe.

2. Pipes resonat sound which is 2.1 Check the level of pipes 4) Avoid pipe interference.

connected to the compressor. connected to the compressor 5) Replace defective fan and fan

and their interference. motor.

2.2 Check rubber inserting 6) Adjust fan to be in the center of

conditions in pipes. bell mouth of the fan guide.

2.3 Touch pipes with hands or screw 7) Leve a clearance between

-driver (check the change of interfering parts and seal gaps in

sound). the structures.

8) Reassemble the parts which make

3. Fan operation sound in the freezer 3.1 Check fan insertion depth and sound.

compartment. blade damage. 9) Leave a clearance if evaporator

3.2 Check the interference with pipes and suction pipe touch

structures. freezer shroud.

3.3 Check fan motor.

3.4 Check fan motor rubber insertion

and aging conditions.

4. Fan operation sound in the 4.1 Same as fan confirmation in the

compressor compartment. refrigerator.

4.2 Check drip tray leg insertion.

4.3 Check the screw fastening

conditions at condenser and

drip tray.

TROUBLE DIAGNOSIS

-91-

Problems Causes Checks Measures Remarks

Vibration sound. 1. Vibration of shelves and foods in 1-1. Remove and replace the 1) Reassemble the vibrating parts

("Cluck") the refrigerator. shelves in the refrigerator and insert foam or cushion where

2. Pipes interference and capillary 1-2. Check light food and container vibration is severe.

tube touching in the compressor. on the shelves. 2) Leave a clearance where parts

compartment. 2-1. Touch pipes in the compressore interfere with each other.

3. Compressor stopper vibration. compartment with hands. 3) Reduce vibration with rubber

4. Moving wheel vibration. 2-2 Check capillary tube touches and restrainer if it is severe.

5. Other structure and parts cover back. (especially, compressor and pipe).

vibration. 3-1 Check compressor stopper 4) Replace compressor stopper if it

vibration. vibtates severely.

4-1 Check vibration of front and rear

moving wheels.

5-1 Touch other structures and parts.

Irregular sound. 1. It is caused by heat expansion 1-1 Check time and place of sound 1)

Explain the principles of refrigeration

("Click"). and contraction of evaporator, sources.

and that the temperature difference

shelves, and pipes in the

between operation and defrosting

refrigerator.

can make sounds.

2)

If evaporator pipe contacts with other

structures, leave a clearance between

them (freezer shroud or inner case).

TROUBLE DIAGNOSIS

-92-

Problems Causes Checks Measures Remarks

Sound "Burping" It happens when refrigerant expands

- Check the sound of refrigerant at the - Check the restrainer attached on the

(almost the same at the end of capillary tube. initial installation. evaporator and capillary tube weld

as animals crying - Check the sound when the refrigerator joints and attach another restrainer.

sound). starts operation after forced defrosting. - If it is continuous and servere, insert

- Check the restrainer attachment capillary tube again (depth:15±3mm)

conditions on the evaporator and - Fasten the capillary tube to suction

capillary tube weld joints. pipes or detach in the compressor

compartment.

- Explain the principles of freezing

cycles.

Water boiling or It happens when refrigerant passes - Check the sound when compressor is - Explain the principles of freezing cycles

flowing sound. orifice in accumulator internal pipes by turned on. and refrigerant flowing phenomenon by

the pressure difference between - Check the sound when compressor is internal pressure difference.

condenser and evaporator. turned off. - If sound is servere, wrap the

accumulator with foam and restrainer.

Sound of whistle When door closes, the internal pressure - Check the sound by opening and - Broaden the cap of discharge hose for

when door of the refrigerator decreases sharply closing the refrigerator or freezer doors. defrosting in the compressor

closes. below atomosphere and sucks air into compartment.

the refrigerator, making the whistle - Seal the gap with sealant between out

sound. and inner cases of hinge in door.

2-8. Odor

TROUBLE DIAGNOSIS

-93-

Problems Causes Checks Measures Remarks

Food Odor. Food (garlic, kimchi, etc) - Check the food is not wrapped. - Dry deodorizer in the shiny and

- Check the shelves or inner windy place.

wall are stained with food juice. - Store the food in the closed

- Check the food in the vinyl wraps. container instead of vinyl wraps.

- Chedk food cleanliness. - Clean the refrigerator and set

button at "strong".

Plastic Odor. Odors of mixed food and plastic - Check wet food is wrapped with - Clean the refrigerator.

odors. plastic bowl and bag. - Persuade customers not to use

- It happens in the new refrigerator. plastic bag or wraps with wet food

or odorous foods.

Odor from the Odor from the old deodorizer. - Check the deodorizer odors. - Dry the deodorizer with dryer and *Deodorizer : option

deodorizer. then in the shiny and windy place.

- Remove and replace the

deodorants.

2-9. Micom

TROUBLE DIAGNOSIS

-94-

Problems Symptom Causes Checks Measures Remarks

Bad PCB All display Bad connection Bad connector Visual check on connector Reconnect

electric power. LCD are off. between Main PCB connection from main connection. connector.

and display circuit. PCB to display PCB.

Defective PCB trans. PCB Trans winding is Check resistance of PCB Trans Replace PCB Trans Applicable to

cut. input and output terminals with or PCB. model without

PCB Trans temperature a tester. (If resistance is infinity, dispenser.

fuse is burnt out. trans winding is cut).

DefectivePCB electric Defective regulator IC Check voltage at input/output Replace regulator. Refer to electric

circuit parts. (7812, 7805). terminals. circuit in circuit

explanation.

PCB electric terminal Check fuse in PCB electric Replace PCB fuse.

fuse is burnt out. terminal with a tester.

STR Parts are Check if STR No. 2 and 3 pins Replace parts. Applicable to

damaged. are cut when power is off. model with

dispenser.

Abnormal Bad connection Lead Wire connecting Check Lead Wire terminals Reconnect Lead

display LCD between Main PCB main PCB and display connecting Main PCB and Wire and directly

operation and display circuit. PCB is cut or connector display PCB with a tester. connect defective

terminal connection is contact terminal to

bad. Lead Wire.

Defective LCD. Defective LCD. Check if all LCD are on when Replace display Refer to display

Main PCB Test switch is PCB. circuit in circuit

pressed (or when both freezer explanation.

key and power freezer key are

pressed at the same time for

more than one second.)

TROUBLE DIAGNOSIS

-95-

Problems Symptom Causes Checks Measures Remarks

Bad cooling. Freezer Compressor does Compressor Lead Wire Check compressor Lead Wire Reconnect Lead

temperature is not start. is cut. with a tester. Wire.

high. Defective compressor Measure voltage at PCB CON2 Replace relay(RY1 Refer to load

driving relay. (3&9) after pressing main PCB and RY2) or PCB. driving circuit in

test switch once. It is OK if circuit

voltage is normal. explanation.

Defective freezer Defective Freezer Check resistance of freezer Replace freezer Refer to

sensor. sensor parts. sensor with a tester. sensor. resistance

characteristics

table of sensor in

circuit

Freezer sensor is Confirm the color of sensor in Repair main PCB explanation.

substituted for other circuits (main PCB sensor sensor housing

sensor. housing).

Defective freezer fan Fan motor lead wire Check fan motor lead wire Reconnect lead

motor. is cut. with a tester. wire.

• Defective door switch Measure the voltage between • Replace door Refer to load

(freezer, refrigerator, PCB power blue line and fan switch

(freezer,

driving circuits in

home bar). motor after pressing test switch

refrigerator

and circuit

• Defective fan motor. of Main PCB. If the voltage is home bar). explanation.

• Defective fan motor normal, it is OK. • Replace fan motor.

driving relay.

Faulty defrost. Refer to faulty defrost items in trouble diagnosis Refer to trouble

functions. diagnosis

function.

TROUBLE DIAGNOSIS

-96-

Problems Symptom Causes Checks Measures Remarks

Bad cooling Wrong Defective Step Motor Check Step Motor Check if Step Motor damper Reconnect lead

Refrigerator Damper. damper motor and motor and reed switch lead wire.

temperature. reed switch and lead wire are cut with a tester.

wire are cut. Check Refer to Step Motor damper Replace Step Motor

Step Motor damper in parts repair guide. damperor refrigerator

part. control box Assy.

Check Step Motor Refer to Step Motor damper Replace relay or Refer to single

damper Motor driving in parts repair guide. PCB. motor damper

relay in PCB. driving circuits

in circuit

explanation.

Foreign materials in Step

Check Step Motor damper Remove foreign

Motor damper baffles. baffle visually. materials.

Ice formation on Check if Step Motor damper Replace Step Motor

Step Motor damper Heater wire is cut with a

damper or refrigerator

baffles. tester. control Box Assy.

Defective refrigerator Defective refrigerator Check the resistance of Replace refrigerator Refer to sensor

sensor sensor parts. refrigerator sensor with a tester. sensor. resistance

characteristic

table in circuit

explanation.

Refrigerator sensor is Check the sensor color in the Repair main PCB

substituted for other circuit. (main PCB sensor sensor housing.

sensor. housing.)

Defective refrigerator Check if refrigerator sensor Fix again the

sensor assembly is not fixed at cover sensor but refrigerator sensor.

condition. inner case visually.

TROUBLE DIAGNOSIS

-97-

Problems Symptom Causes Checks Measures Remarks

Bad defrost. Defrost is not Defrost lead wire is cut. Check if defrost lead wire is cut with a Reconnect Lead

working. tester. Wire.

Defective defrost driving relay. Check the voltage of CON2 (1 and 7) Replace relay (RY 7 Refer to load

with a tester after pressing main and RY 3) or PCB. driving conditions

PCB test switch twice. check in circuit

If the voltage is normal then it is OK. explanation.

Defective defrost sensor parts. Check the resistance of defrost sensor Replace defrost Refer to sensor

with a tester. sensor. resistance

characteristic

table of circuit

explanation.

Defective Buzzer Defective connecting lead wire from Check lead wire related to door Repair lead wire.

buzzer continuously main PCB to door switch. switch with a tester.

rings or door Defective door switch parts. Refer to door switch in parts repair Replace door switch.

opening alarm guide.

does not work.

Defective Buzzer does Key input wire is cut or bad connector Check input wire with a tester. Reconnect lead Refer to display

display button not ring and terminal contact in main PCB and wire and replace or circuit in circuit

key does not display PCB connecting lead wire. directly connect bad explanation.

sense even contact terminal to

button is lead wire.

pressed.

Key is continuously depressed due to Disassemble frame display and confirm Adjust or replace

structural interference. visually. interfering

structures.

TROUBLE DIAGNOSIS

-98-

Problems Symptom Causes Checks Measures Remarks

Defective Buzzer rings Trouble mode indication. Check trouble diagnosis function. Repair troubles Refer to mode

display button. but key does indication in

not sense even function

button is explanations.

pressed.

Door Buzzer Buzzer Defective connecting lead wire from Check lead wire associated with door Repair lead wire. Check model

continuously main PCB to door switch. switch. with dispenser.

rings or door Defective freezer compartment door Refer to door switch in parts repair Replace Freezer

opening alarm switch parts. guide. compartment door

does not work. switch.

Bad water/ice Ice and water Defective connecting lead wire from Check Lead Wire associated with lever Repair lead wire.

dispenser. are not Main PCB to lever switch. switch with a tester.

dispensed. Defective lever switch parts Refer to door switch in parts repair guide. Replace lever switch.

Defective photo coupler IC parts. Check voltage change at photo coupler Replace photo

output terminals with lever switch coupler IC or PCB.

pressed. It is OK if voltage change is

between 0V - 5V.

Defective relay associated with ice Check relay (RY4, RY5, RY12) Replace defective

dispense (geared motor, cube and with a tester. relay.

dispenser solenoid).

Defective parts associated with ice Check resistance of parts with a tester. Replace defective

dispense (geared motor, cube and parts.

dispenser solenoid).

Defective relay associated with water Check relay (RY7) with a tester Replace defective

dispense. relay.

Defective parts associated with water Check resistance of parts with a tester. Replace defective

dispenser. parts.

3. Cooling Cycle Heavy Repair

3-1. The Heavy Repair Standards for Refrigerator with R134a Refrigerant

NOTE) Please contact Songso company on [phone] if you have inquiry on heavy repair special facility.

TROUBLE DIAGNOSIS

- 99 -

NO. Items Unit Standards Purposes Remarks

1 Pipe and piping Min. Pipe:within 1 hour. To protect The opening time should be reduced to a

system opening time. Comp:within Moisture half of the standards during rain and

10 minutes. Penetration. rainy seasons (the penetration of water

Drier:within into the pipe is dangerous).

20 minutes.

2 Welding. Nitrogen Weld under To protect - Refet to repair note in each part.

Pressure. Nitrogen oxide scale - R134a refrigerant is more susceptible to

atmosphere formation. leaks than R12 and requires more care
(N

2 pressure: during welding.

0.1~0.2 kg/cm

2

) - Do not apply force to pipes before and

after welding to protect pipe from
cracking.

3N

2 sealed parts. Confirm N2 Confirm air leaking To protect - In case of evaporator parts, if it doesn't

leak. sounds when moisture noise when removing rubber cap blow

removing rubber penetration. dry air or N

2 gas for more than 1 min

cap. use the parts.
Sound:usable
No sound:

not usable

4

Refrigeration

Evacuation

Min. More than To remove

Cycle. time 40 minutes. moisture.

Vacuum Torr Below 0.03(ref) Note:Only applicable to the model

degree equipped with reverse flow protect

plate.

Vacuum EA High and low Vaccum efficiency can be improved by

Pressure sides are operating compressor during evacuation.
evacuated at the
same time for
models above 200

L

Vacuum EA Use R134a To protect The rubber pipes for R12 refrigerant shall

piping exclusive mixing of be melted when they are used for R134a

manifold. mineral and refrigerant(causes of leak).

ester oils.

Pipe EA Use R134a To protect

coupler cxclusive. R12 Refri-

gerant mixing.

Outlet R134a exclusive.

˝

(Socket)

Plug R134a exclusive

˝

5 Refrigerant weighing. EA Use R134a Do not mix - Do not weight the refrigerant at too hot or

exclusively. with R12 too cold an area.(25°C is adequate.)
Weighing refrigerant. - Use copper bombe
allowance:±5g Socket:2SV Plug: 2PV R134a
Note:Winter:-5g Note:Do not burn O-ring (rubber) during

Summer:+5g welding.

6 Drier replacement. -

Use R134a exclusively

To remove

for R134a refrigerator

the moisture

-

Use R12 exclusively

from pipe.

for R12 refrigerator

-

Replace drier whenever
repairing refrigerator
cycle piping.

7 Leak check. -Do not use soapy Detect -Check oil leak at refrigerant leak area.

water for check. refrigerant Use electronic leak detector if oil leak is
it may be sucked leak area. not found.
into the pipe by. -The electronic leak detector is very

sensitive to halogen gas in the air. It also
can detect R141b in urethane. Please
practice, therfore, many times before use.

3-2. Summary Of Heavy Repair

TROUBLE DIAGNOSIS

- 100 -

Process Contents Tools

- Cut charging pipe ends and discharge refrigerant from Filter, side cutters
drier and compressor.

- Use R134a oil and refrigerant for compressor and drier Pipe Cutter, Gas welder, N

2 gas

- Confirm N

2 sealing and packing conditions before use.

Use good one for welding and assembly.

- Weld under nitrogen gas atmosphere.(N

2 gas pressure:

0.1-0.2kg/cm

2

).

- Repair in a clean and dry place.

- Evacuate for more than forty minutes after connecting Vacuum pump(R134a
manifold gauge hose and vacuum pump to high (drier) exclusively), Manifold gauge.
and low (compressor refrigerant discharging parts)
pressure sides.

- Evacuation Speed:113

l/min.

- Weigh and control the allowance of R134a bombe in a R134a exclusive bombe(mass
vacuum conditions to be ±5 g with electronic scales and cylinder), refrigerant(R134a)
charge through compressor inlet manifold gauge, electronic
(Charge while refrigerator operates). scales, punching off flier,

- Weld carefully after inlet pinching. gas welding machine

- Check leak at weld joints. Electronic Leak Detector,

Minute leak: Use electronic leak detector Driver(Ruler).
Big leak: Check visually or fingers.

Note:Do not use soapy water for check.

- Check cooling capacity

➀ Check radiator manually to see if warm.
➁ Check hot line pipe manually to see if warm.
➂ Check frost formation on the whole surface of the

evaporator.

- Remove flux from the silver weld joints with soft brush Copper brush, Rag, Tool box

or wet rag.(Flux may be the cause of corrosion and
leaks.)

- Clean R134a exclusive tools and store them in a clean
tool box or in their place.

- Installation should be conducted in accordance with the

standard installation procedure.(Leave space of more
than 5 cm from the wall for compressor compartment
cooling fan mounted model.)

Trouble

diagnosis

Remove refrigerant

Residuals

Parts
replacement
and welding

Compressor

compartment

and tools

arrangement

Transportation

and

installation

Check

refrigerant leak

and cooling

capacity

Vacuum

Refrigerant

charging and

charging

inlet welding

3-3. Precautions During Heavy Repair

TROUBLE DIAGNOSIS

- 101 -

Items Precautions

1. Use of tools. 1) Use special parts and tools for R134a.

2. Removal of retained 1) Remove retained refrigerant more than 5 minutes after turning off a refrigerator.
refrigerant. (If not, oil will leak inside.)

2) Remove retained refrigerant by cutting first high pressure side (drier part) with a nipper and
then cut low pressure side. (If the order is not observed, oil leak will happen.)

3. Replacement of drier. 1) Be sure to replace drier with R134a only when repairing pipes and injecting refrigerant.

4. Nitrogen blowing 1) Weld under nitrogen atmosphere in order to prevent oxidation inside a pipe.
welding. (Nitrogen pressure : 0.1~0.2 kg/cm

2

.)

5. Others. 1) Nitrogen or refrigerant R134a only should be used when cleaning inside of cycle pipes

inside and sealing.

2) Check leakage with an electronic leakage tester.

3) Be sure to use a pipe cutter when cutting pipes.

4) Be careful not the water let intrude into the inside of the cycle.

Compressor

Evaporator

Drier

2

Low pressure side

Condenser

1

High pressure side

3-4. Practical Work For Heavy Repair

TROUBLE DIAGNOSIS

- 102 -

Items Precautions

1. Removal of residual

refrigerant.

1) Remove residual refrigerant more than 5 minutes later after turning off the refrigerator.
( If not, compressor oil may leak inside.)

2) Remove retained refrigerant slowly by cutting first high pressure side (drier part) with a
nipper and then cut low pressure side.

2. Nitrogen blowing
welding.

When replacing a drier:

Weld

a and b parts by blowing nitrogen(0.1~0.2kg/cm2) to high pressure side after

assembling a drier.

When replacing a compressor:

Weld a and b parts by blowing nitrogen to the low pressure side.
Note) For other parts, nitrogen blowing is not necessary because it does not produce oxidized

scales inside pipe because of its short welding time.

3. Replacement of drier.

Inserting a capillary tube

Measure distance with a ruler and put a mark(12

+3/-0

)on the capillary tube. Insert tube to the

mark, and weld it

KEYPOINTING

Observe the sequence for
removal of refrigerant.
(If not, compressor oil may
leak.)

KEYPOINTING

Welding without nitrogen
blowing produces oxidized
scales inside a pipe, which
affect on performance and
reliability of a product.

KEYPOINTING

Be sure to check the
inserted length of capillary
tube when it is inserted. (If
too much inserted, a
capillary tube is clogged by
a filter.)

Compressor

Low pressure side

Condenser

High pressure side

Drier

Evaporator

Release

Refrigent

Intake

Suction

1 2 1

2

Evaporator

Drier

High pressure side

Condenser

Refrigent

Intake

12

+3

-0

Filter

* Unit : mm

TROUBLE DIAGNOSIS

- 103 -

Items Precautions

4.Vacuum degassing.

Pipe Connection

Connect a red hose to the high pressure side and a blue hose to the
low pressure side.

Vacuum Sequence

Open a, b valves and evacuate for 40 minutes. Close valve a.

5.Refrigerant charging.

Charging sequence

1) Check the amount of refrigerant supplied to each model after completing vacuum
degassing.

2) Evacuate bombe with a vacuum pump.

3) Measure the amount of refrigerant charged.

- Measure the weight of an evacuated bombe with an electronic scale.

- Charge refrigerant into a bombe and measure the weight. Calculate the weight of

refrigerant charged into the bombe by subtracting the weight of an evacuated bombe.

KEYPOINTING

- If power is applied
during vacuum
degassing, vacuum
degassing shall be
more effective.

- Operate compressor
while charging
refrigerant. (It is
easier and more
certain to do like
this.)

KEYPOINTING

- Be sure to charge
the refrigerant at
around 25°C.

- Be sure to keep -5g
in the winer and
+5g in summer

the amount of refrigerant charged= a weight after charging ­a weight before charging (a weight of an evacuated cylinder)

Calculation of amount of refrigerant charged

Blue

Evaporator

Drier

2 1

Low

pressure

Yellow

Compressor

3

Suction pipe

Condenser

Vaccum

Pump

High

pressure

Red

Indicate the weight of
an evacuated bombe

R134a

3-5. Standard Regulations For Heavy Repair

TROUBLE DIAGNOSIS

- 104 -

Items Precautions

4) Refrigerant Charging
Charge refrigerant while operating a compressor as shown above.

5) Pinch a charging pipe with a pinch-off plier after completion of charging.

6) Braze the end of a pinched charging pipe with copper brazer and take a gas leakage test

on the welded parts.

6. Gas-leakage test * Take a leakage test on the welded or suspicious area with an electronic leakage tester.

7. Pipe arrangement Check each pipe is placed in its original
in each cycle place before closing a cover back-M/C

after completion of work. Particularly
control the size of Joint Drain Pipe

1) Observe the safety precautions for gas handling.

2) Use JIG (or wet towel) in order to prevent electric wires from burning during welding. (In order to prevent insulation
break and accident.)

3) The inner case shall be melted and insulation material (polyurethane) shall be burnt if not cared during welding inner
case parts.

4) The copper pipe shall be oxidized by overheating if not cared during welding.

5) Not allow the aluminum pipes to contact to copper pipes. (In order to prevent corrosion.)

6) Observe that the inserted length of a capillary tube into a drier should be 12 mm.

7) Make sure that the inner diameter should not be distorted while cutting a capillary tube.

8) Be sure that a suction pipe and a filling tube should not be substituted each other during welding. ( High efficiency
pump.)

+3

-0

Evaporator

Compressor

Drier

Condenser

Bombe

Rubber

Molecular
Sieves

12 mm

Drier

Molecular Pipe

+3

-0

3-6. Brazing Reference Drawings

TROUBLE DIAGNOSIS

- 105 -

PIPE ASSY, JOINT

PIPE ASSY, HOT LINE

(Freezer)

PIPE ASSY, HOT LINE

(Refrigerator)

PIPE ASSY, JOINT

CONDENSER ASSY, WIRE

PIPE ASSY, SUCTION

DRIER ASSYCAPI - TUBE

Copper Brazer

Copper
Brazer

Silver Brazer

Copper
Brazer

Copper Brazer

Copper Brazer

Coppper Brazer

Silver Brazer

Copper
Brazer

4. HOW TO DEAL WITH CLAIMS

4-1. Sound

TROUBLE DIAGNOSIS

- 106 -

Problems Checks and Measures

"Whizz" sounds ■ Explain general principles of sounds.

• All refrigerator when functioning properly have normal operating sound. The
compressor and fan produce sounds.
There is a fan in the freezer compartment which blows cool air to freezer and
refrigerator compartments. "Whizz" sounds are heard when the air passes
through the narrow holes into the freezer and refrigerator compartments.

■ Cooling Fan sound in the compressor compartment.

• There is a fan on the back of the refrigerator, which cools the compressor
compartment. If there is a small space between the refrigerator and the wall, the
air circulation sounds may be noticeable.

■ Noise of Compressor.

• This operating sound happens when the compressor compresses the
refrigerant. The compressor rotates at 3600RPM. The sound of compressor
operation becomes louder as the refrigerator capacity increases.

"Click" sounds ■Explain the principles of temperature change.

• The sounds happens when pipes and internal evaporator in the refrigerator
compartment expand and contract as the temperature changes during the
refrigerator operation. This sound also happens during defrosting, twice a day,
when the ice on the evaporator melts.

"Clunk" sound ■ Explain that it comes from the compressor when the refrigerator starts.

• When the refrigerator operates, the piston and motor in the compressor rotate
at 3600RPM. This sound is caused by the vibration of motor and piston when
they start and finish their operation. This phenomena can be compared with that
of cars. When the car engine ignites and starts to rotate, the loud sound
becomes gradually quiet. When the engine stops, it stops with vibration.

Vibration sound ■ Check the sound whether it comes from the pipes vibration and friction.

• Insert rubber or leave a space between pipes to avoid the noise.

• Fix the fan blade if the noise is due to the collision of fan and shroud.

• Fix the drip tray if it is loosened.

■ Sound depends on the installation location.

• Sound becomes louder if the refrigerator is installed on a wooden floor or near a
wooden wall. Move it to the another location.

• If the refrigerator is not leveled properly, a small vibration can make a loud
sound. Please adjust the level of the refrigerator.

TROUBLE DIAGNOSIS

- 107 -

Problems Checks and Measures

Sounds of water flowing ■ Explain the flow of refrigerant.

• When the refrigerator stops, the water flowing sound happens.
This sound happens when the liquid or vapor refrigerant flows from the
evaporator to compressor.

"Click" sounds ■Explain the characteriistics of moving parts.

• This noise comes from the MICOM controller's switch on the top of the
refrigerator when it is turned on and off.

Noise of ice maker operation ■ Explain the procedure and principles of ice maker operation.
(applicable to model with ice maker). • Automatic ice maker repeats the cycle of water supplying ➝ icemaking ➝ ice

- Noise produced by ice dropping ejection. When water is supplied, the water supply valve in the machine room
and hitting ice bank. makes sounds like “Whizz” and water flowing also makes sound. When water

- Noise from motor sounds “Whizz”. freezes to ice, freezing sounds such as “click, click” are heard. When ice is

being ejected, sounds like “Whizz” produced by a motor to rotate an ice tray
and ice dropping and hitting ice bank sounds are also heard.

Noise when supplying water. ■ Explain the principles of water supplied to dispenser.

• When the water supply button in the dispenser is pressed, the water supply
valve in the compressor compartment opens and let the water flow to the water
tank in the lower part of the refrigerator compartment. The water is dispensed
by this pressure. When this happens, motor sound and water flowing sound are
heard.

Noise when supplying ice. ■ Explain the principles of ice supply and procedure of crushed ice making in a

dispenser.

• When ice cube button is pressed, ice stored in the ice bank is moved by a Helix
Pusher and dispensed. If crushed ice button is pressed, the cube ice is
crushed. When this happens, ice crushing and hitting ice bank sounds are
heard.

4-2. Measures for Symptoms on Temperature

TROUBLE DIAGNOSIS

- 108 -

Problems Checks and Measures

Refrigeration is weak. ■ Check temperature set in the temperature control knob.

• Refrigerator is generally delivered with the button set at “normal use” (MID).
But customer can adjust the temperature set depending on their habit and taste.
If you feel the refrigeration is weak, then set the temperature control button at
“strong” position. If you adjust the button in the freezer compartment as well,
the refrigeration is stronger than adjusting refrigerator only.

The food in the chilled drawer is . ■ The chilled drawer does not freeze food.
not frozen but defrosted • Use chilled drawer for storing fresh meat or fish for short periods. For storing for

a long periods or freezing food, use a freezer compartment. It is normal that
frozen foods thaw above the freezing temperature (in the chilled drawer).

Refrigerator water is not cool. ■ Check the water storage location.

• If water is kept in the door rack, please ask to keep it in the refrigerator
compartment shelf. It will then become cooler.

Ice cream softens. ■ Explain the characteristics of ice cream.

• The freezing point of ice cream is below -15°C. Therefore ice cream may melt if
it is stored in the door rack.

• Store ice cream in a cold place or set the temperature control button of a freezer
at “strong” position.

Refrigeration is too strong. ■ Check the position of temperature control button.

• Check if refrigeration is strong in whole area of the refrigerator or partly near the
outlet of the cooling air. If it is strong in whole area, set the control button at
“weak”. If it is strong only near the outlet of cool air, keep food (particularly wet
and easy to frozen such as bean curd and vegetables) away from the outlet.

Vegetables are frozen. ■ Check the vegetables storage.

• If vegetables are stored in the refrigerator shelf or chilled drawer instead of
vegetable drawer, they will be frozen. Set the control button at “weak” if they are
also frozen in the vegetable drawer.

The food stored at inside of ■ Check if food is stored near the outlet of the cooling air.
the shelf freezes even the • The temperature at cooling air outlet is always below the freezing point.
control button is set at “MID”. Do not store food near the outlet of the cooling air as it block the air circulation.

And do not block the outlet. If the outlet of the cooling air is blocked, the
refrigerator compartment will not be cooled.

4-3. Odor and Frost

TROUBLE DIAGNOSIS

- 109 -

Problems Checks and Measures

Odor in the refrigerator compartment.

■ Explain the basic principles of food odor.

• Each food has its own peculiar odor. Therefore it is impossible to prevent or
avoid food odor completely when food is stored in the completely sealed
refrigerator compartment. Deodorizer can absorb some portions of the odor but
not completely. The intensity of odor depends on refrigerator conditions and
environments.

■ Check the temperature control button and set at “strong”.

• Clean inside of the refrigerator with detergent and remove moisture. Dry inside
the refrigerator by opening the door for about 3 or 4 hours and then set the
temperature control button at “strong”.

Frost in the freezer compartment ■ Explain the basic principles of frost formation.

• The main causes for frosting:

- Door was left open.

- Air penetration through the gasket

- Too frequent door opening. (parties. etc.)

- Hot foods are stored before they are cooled down. The temperature of freezer

is -19°C. if temperature is set at “MID”. If hot air comes into the refrigerator,
fine frost forms as cold air mixes with hot air. If this happens quite often, much
frost forms inside of the refrigerator. If the door is left open in Summer, ice may
form inside of the refrigerator.

Frost in ice tray. ■ Explain basic principles of frost formation.

• When ice tray with full of water is put into a freezer compartment, the water
evaporates. If cool air fan operates, the moisture attached to the jaw (protruded
part) of ice mold shall freeze and form frost. If warm water was put into the ice
mold, the situation will become worse.

4-5. Others

TROUBLE DIAGNOSIS

- 110 -

Problems Checks and Measures

The refrigerator case is hot. ■ Explain the principles of radiator.

• The radiator pipes are installed in the refrigerator case and partition plate
between the refrigerator and the freezer compartment in order to prevent
condensation formation. Particularly in summer or after installation of
refrigerator, it may feel hot but it is normal. If there is no enough space to
dissipate heat, it can be hotter due to lack of heat radiation. Please install a
refrigerator in a well-ventilated place and leave a clearance between refrigerator
and wall:

Small holes in a door liner ■ Explain that the hole is for releasing gas.

• A small hole in the door liner is for releasing gas during insulation materials
lining work. With a releasing hole, forming can be easily done .

Electric bills are too much. ■ Check the use conditions.

• Too frequent door opening and hot food storing cause the compressor to
operate continuously and hence increase the electric consumption and bills.

Condensation on the inside ■ Explain how to store foods
wall of the refrigerator • Condensation forms when refrigerator is installed at damp area, door is
compartment and the cover of frequently opened, and wet foods are not stored in the air tight container or
properly vegetable drawer. wrapped. Be sure to store wet foods in the air tight container or in the wrap.

When is the power connected? ■ When should the power be connected ?

• You can connect the power right after the installation. But if the refrigerator was
laid flat during transportation for a long period of time and the refrigerant and
compressor oils are mixed up, then this will affect badly the performance of a
refrigerator. Be sure to connect the power 2~3 hours after refrigerator is
installed.

Door does not open properly. ■ Refrigerator compartment door does not open properly.

• When the door is open, warm open air comes into the compartment and is
mixed up with cool air. This mixed air shall be compressed and increase the
internal pressure when door is closed. This causes the door sticked closely to
the refrigerator in a moment. (If the refrigerator is used for a long time, it will
then open smoothly.)

■ When the refrigerator compartment door is open and close, the freezer
compartment door moves up and down.

• When the refrigerator compartment door is open and close, fresh air comes into

the freezer compartment and moves up and down the freezer compartment
door.

■ Door opens too easily.

• There is a magnet in the gasket rubber so that it is ok. if door is securely closed

without a gap. It can be open easily if the foods in the refrigerator or freezer
compartments hold the door open.

■ A door does not close properly.

• If the rear side of the refrigerator is raised higher than front side, door shall not

be easily closed. Adjust the level of refrigerator with levelling screws.

The front side should

be raised a little bit higher

than the rear side.

1. DOOR

1) Remove lower cover and then disconnect water
supply tube in the lower part of freezer door.

• Pull a water supply tube b forward while pressing a part

to disconnect water supply tube as shown below.

2) Remove a freezer door.

(1) Loosen hinge cover screw of freezer door and remove

cover.
Disconnect all connecting lines except earthing cord.

(2) Turn hinge lever in arrow A direction until it is

loosened and take it out in arrow B direction.

Note :

• When disconnecting refrigerator door, turn hinge
lever counterclockwise.

• If hinge lever or bracket hinge pin is deformed
during assembling freezer and refrigerator doors,
fix two screws (Tap Tite Screw, M6: Hinge, L fixing
screw) in the hole of upper hinge.

(3) Disconnect upper hinge a from a hinge supporter b

by grasping the front part of upper hinge and lifting up
(Hinge Assy, U) in arrow direction A and pull forward
in arrow B direction. Be careful as the door may be
fallen down.

(4) Lift up the freezer door a in arrow direction and

disconnect the door from the lower hinge b. Don’t pull
a door forward.

Note :

• Lift up a freezer door until a water supply tube is
fully taken out.

(5) Assembly is the reverse order of disassembly

HOW TO DISASSEMBLE AND ASSEMBLE

- 111 -

2

1

A

A

B

1

2

1

2

Cover, Hinge

2

Connecting

Line

Earthing

Cord

Lever, Hinge

A

B

2. HANDLE

1) Put blade screwdriver into a groove on the side of a
Deco handle and lift up a little bit in arrow a direction
and push up with hand in arrow b direction and
disconnect.

2) Put blade screwdriver into a groove on the side of a
DECO handle and lift up in arrow direction c and push
down with hand in arrow direction d and disconnect.

3) Push up a piece handle c in arrow direction with hand
and disconnect.

4) Turn screw in arrow direction with a cross driver and
disconnect.

3. SHROUD, GRILLE FAN

1) Loosen two screws after disconnecting a cap screw of a
grille fan(U) with a balde screwdriver.

2) Disassembly of a grille fan(U) : Pull forward after
opening hook at ➝ part with a blade screwdriver.

3) Disconnect housing A of a grille fan (L) from the main
body.

4) Disassembly of a grille fan (L) : Hold upper part of a
grille fan(L) and pull forward carefully.

5) Loosen two screws.

6) Disassembly of shroud. F(U) : Disconnect housing of B
after removing two rail guides with a blade screwdriver.

7) Disassembly of shroud. F(U) : Hold upper part and pull
forward.

8) Check foam PU sticking conditions around a shroud,
F(U) and F(L) during assembling. If damaged, torn or
badly sticked, assemble with a new one after sealing
well.

4. ICEMAKER ASSY

1. Dispenser Model

1) How to disassemble:
(1) Remove ice bank from the freezer compartment.
(2) Loosen two screws on the upper part of icemaker

bracket.

(3) Disconnect icemaker bracket so that it can slide

forward.
(4) Disconnect icemaker housing and sensor housing.
(5) Disconnect icemaker horizontally by pressing bracket

hook part. ( Don’t disassemble further. The set value

may be changed.)

2) How to assemble : The assembly is the reverse order of
the above disassembly.

Note :

When the ice tray is not horizontal after assembly,
assembly must be wrong. Check and assemble
again.

HOW TO DISASSEMBLE AND ASSEMBLE

- 112 -

1

Handle, Deco

2

3

4

Handle, Piece

Screw

Bracket, Ice Maker

Hook

Ice Maker Unit

Lever

Tray, Ice

Sensor

Insulation

Cover, Sensor

5. DISPENSER

1) Disconnect button assembly by pulling down until it
stops and then pulling forward.

2) Remove display frame Assy by making a gap between a
display frame Assy. and funnel Assy. with a balde
screwdriver and pulling it forward. The cover dispenser
is fixed with a hook.

3) Display Assy can be disconnected by pressing the
upper part of a cover dispenser and pushing a display
Assy. after disconnecting display frame Assy. housing.

4) Loosen four screws with a phillips screwdriver and pull a
funnel Assy to disconnect.

5) Duct cap Assy is disconnected if hold lever connecting
screw is loosened with a phillips screwdriver.

6) For assembling a duct cap Assy., insert one end of a
spring into the right hole of dispenser lever, and insert
the other end into the right hole in upper part of
dispenser. And then assemble a holder lever after fixing
a holder at a solenoid Assy working part.

HOW TO DISASSEMBLE AND ASSEMBLE

- 113 -

Button

Funnel Assy

Funnel
Assy

Holder

Lever

Solenoid Assy

Cap Assy,Duct

Spring

Heater, Sheet

Lever,Dispenser

Solenoid Assy

7) Dispenser Related Parts

HOW TO DISASSEMBLE AND ASSEMBLE

- 114 -

7

12

13

8

11

14

17

15

24

16

23

21

1

22

9

10

2

4

18

21

19

1 FRAME ASSY, DISPLAY
2 COVER, DISPENSER
4

PWB(PCB) ASSY, DISPLAY
7 FUNNEL ASSY
8 SWITCH, MICRO
9 FRAME, FUNNEL

10 LEVER(SWITCH)
11 FUNNEL
12 RUBBER, FUNNEL
13 SWITCH, ROCKER
14 SOLENOID ASSY
15 SPRING
16 HOLDER, LEVER
17 CAP, DUCT
19 LEVER, DISPENSER
20 RUBBER, CAP
21 BUTTON ASSY
22 BUTTON
23 HOLDER, BUTTON
24 DECO, DRAIN

< 17 Cap Assy, Duct Detailed Drawings>

6. WATER TANK AND WATER LINE

u The water tank at back and lower part of a refrigerator is

fixed by one screw and has a capacity containing 7
glasses (180cc per glass) of cold water. It will take time
to make more cold water in the tank.

*

The first portion of dispensed water is not cold even
though the refrigerator is working. In this case,
dispense ice first in the cup and then water to make a
cold water.

7. HOME BAR

7-1. Home Bar related parts

7-2. Home Bar parts disassembly and assembly

1) Disconnect H/Bar Door Assy a.

2) Loosen two screws g attached on the refrigerator
compartment door with a phillips screwdriver. And
loosen 4 screws b and two screws c. Pull H/Bar door
Assy a. forward to disassemble.

3) Loosen two screws j, i fixed on H/Bar door Assy. and
two screws k with a cross driver to disassemble arm
Assy.

4) Assemble parts by performing the disassembly in
reverse order.

Note :

• Assemble carefully parts g, j, kuntil they are
fixed firmly when assembling them.

• Adjust exterior gap by adjusting parts

b, g

and

when assembling.

HOW TO DISASSEMBLE AND ASSEMBLE

- 115 -

1

8

6

7

5

11

10

9

8

7

6

4

3

11

10

9

2.05.0

1.8 1.8

1 DOOR ASSY, H/BAR 7 SCREW TAP TITE(ARM)
2

SEREW, TAP TITE(HINGE-H/B)

8 ARM ASSY

3

SCREW MACHINE(HINGE-H/B)

9 STOPPER

4 HINGE ASSY H/BAR 10

SCREW, MACHINE(STOP ARM-H/B)

5 HINGE ASSY H/BAR 11

SCREW MACHINE(HINGE-H/B)

6 CAP, ARM

Ref No. : GR-L247, GR-L207, GR-B247, GR-B207

REFRIGERATOR DOOR PART

*: Optional part

EXPLODED VIEW

- 119 -

233A

232A

240C

240C

240A

240A

147A

231A

230A

234A

243A

243A

241B

241A

147B

*

147C

*

236A

*

206B

*

206D

*

206F

*

205C

*

205B

*

205D

*

205C

*

205A

*

205B

205A

205F

ICE & WATER PART

*: Optional part

EXPLODED VIEW

- 122 -

404B

614A

606A

610A

621B

612A

612B

612C

615A

616B

616C

616A

613A

616E

623A

*

623A

or

623B

618A

622A

616D

*

404A

620A 620B

616A

611A

625A

*

616G

*

619A

*

601A

605A

602A

607A

600A

603A

510B

603B

604A

616F

*

627A

*

617A

624B

619A

*

MACHINE COMPARTMENT

*: Optional part

EXPLODED VIEW

- 123 -

300A

310B

307A

304A

306A

310A

317B

317A

305C

305B

313A

301A

306C

306D

307A

104A

305C

305B

303C

303B

303D

303A

305A

407B

500A

502B

502A

411A

308A

308C

308B

309B

403B

309B

309A

306C

105C

105D

105E

505A

*

105F

407A

*

DISPENSER PART

EXPLODED VIEW

- 124 -

278A

278E

278F

402C

278D

405A

275A

276A

275C

401C

275D

275B

281A

276B

280C

280A

207A

277A

280B

278B

278C

279A

501A