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1. Trouble diagnosis function provides easy service when refrigerator is out of order during use.

2. When the refrigerator is out of order, the function does not carry on  even function control button is pressed but

recognition sound (bell sounds) shall be heard.

3. If troubles are solved, it returns to normal operation. (reset)

4. Trouble code is shown in the freezer temperature indicator LED in the refrigerator control display and all LEDs except

trouble code are off.

- 33 -

F4
F3
F2
F1

F

R

Trouble Code

Index

Trouble Code Index

Operation Status During Trouble

No.

Trouble Items

Troubles

Freezer

Defrost

Electronic single

F1      F2     F3     F4

Compressor

Fan

Heater

Damper

1

Abnormal freezer (F) 

Freezer sensor is cut or short-circuited

15 min on/ Standard

●

●

●

●

sensor 

15 min off

RPM

2

Abnormal refrigerator 

Upper shelf refrigerator sensor is cut or 

●

●

Standard

●

●

Note 2)

sensor 1 (R1) (upper 

short-circuited.

RPM

shelf in the refrigerator)

3

Abnormal refrigerator 

Note 1)

Lower shelf refrigerator sensor is cut or

●

●

Standard

●

●

●

●

sensor 2 (R2) (lower 

short-circuited.

RPM

shelf in the refrigerator)

4

Abnormal defrost 

Defrost sensor is cut or short-circuited

●

●

Standard No defrost

●

●

sensor

RPM

5

Faulty defrost

Defrost heater and temperature fuse are 

●

●

Standard

●

●

●

●

cut and disconnected. (indicates after at 

RPM

least four hours when troubles occur)

6

Abnormal electronic 

Faulty damper motor.  Lead wire of 

●

●

Standard

●

●

single motor damper

damper lead switch is cut or short-circuited. 

RPM

Interference of foreign materials in damper 
baffle or EPS

7

Abnormal room 

Note 1)

Room temperature  sensor is cut or 

●

●

●

●

●

●

●

●

temperature    

short-circuited.

sensor.

8

Abnormal home bar 

Note 1)

Home bar sensor is cut or short-circuited.

●

●

●

●

●

●

●

●

sensor

9

Abnormal icemaker 

Note 1)

Icemaker sensor is cut or short-circuited.

●

●

●

●

●

●

●

●

sensor

10

Abnormal icemaker 

Note 1)

Faulty motor or hall IC in icemaker unit. 

●

●

Standard

●

●

●

●

unit.

Lead wire is cut or short-circuited. 

RPM

Faulty motor driving circuits

:On

:Off

Check
operation
every hour
and reset
when it is
normal.

Note 1) The abnormality of room temperature sensor, refrigerator sensor 2, Home Bar 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 power freeze button for more than one second at the same time).

Room Temperature Detection Sensor

Normal :  A  LED On

Abnormal :  A  LED Off

Refrigerator Sensor 2 (lower shelf)

Normal :  B  LED On

Abnormal :  B  LED Off

Home Bar Sensor

Normal :  C  LED On

Abnormal :  C  LED Off

Ice maker Unit

Normal :  D  LED On

Abnormal :  D  LED Off

Icemaker Sensor

Normal :  E  LED On

Abnormal :  E  LED Off

Note 2) If upper shelf refrigerator sensor is faulty, it is opened for 10 minutes and closed for 10 minutes.

1. Test function is to check functions of PWB and products and to find faulty parts in the refrigerator.

2. Test switch is on the main PWB in the refrigerator. Test mode completes and returns to the normal conditions after two

hours in maximum. 

3. During the test mode, function control button is not detected but button recognition sounds (bell sounds) are heard.

4. Please unplug power cord and then plug into the wall outlet to get normal conditions after test mode is completed.

5. If abnormal sensor is detected during test mode, test mode is canceled  and trouble code is indicated.

6. Test mode does not work even test switch is pressed when it indicates trouble code.

- 34 -

Test 1

Press test switch once.

1. Compressor continuously operates.

2. Freezer fan (high speed RPM) continuously 

operates.

3. Defrost Heater is off.

4. All display LEDs are on.

5. Electronic single motor damper is in open 

conditions.(baffle is open.)

Test 2

Press test switch once at 

1. Compressor is off.

It returns to normal 

test mode 1 conditions.

2. Freezer fan is off.

conditions when the 

3. Defrost heater is on.

temperature of defrost 

4. All display LEDs are off.

sensor is above 10

°

C.

(Freezer room  A  and Refrigerator room  B  

are only on.)

5. Electronic single motor  damper is all closed. 

(baffle is closed.)

Normal

Press test switch once 

Returns to the initial conditions.

Compressor starts after 

Conditions

at test mode 2 conditions.

seven minutes delay.

* Lead Check Function: If both freezer temperature control button and power freeze button are pressed at the same time for

more than one second, all LEDs in control display are on and return to its previous normal conditions when buttons are
released.

* Freezer Fan RPM Variable Check: In case of freezer fan is in operation, when both freezer temperature control button and

power freeze button are pressed for more than one second at the same time, freezer fan RPM changes from high speed to
normal speed for thirty seconds. After thirty seconds, it returns to its original RPM. Freezer fan motor does not require
twenty seconds delay. 

1. It is possible to get ice and water without opening the refrigerator door.

2. Ice or water will be dispensed when dispenser switch (rubber button) is pressed after selecting ice (cube or crushed) or

water. If ice is selected, duct door will open by duct door solenoid when dispenser press switch is pressed. Duct door
shall be closed five seconds after press switch is released.

3. Ice and water shall not be dispensed when refrigerator door is open.

4. Geared motor and solenoid (cube and water) shall be automatically off if there is no off signals in three minutes after

dispenser switch is pressed. Solenoid (duct door) shall stop five seconds after it is off. (to prevent coil cut due to solenoid
overheating)

5. Dispenser Lamp On/Off Functions

Dispenser lamp shall be on and off when dispenser press switch is pressed and released respectively. 

6. Water/Crushed Ice/Ice Cube selection functions

1) Water/Crushed Ice/Ice Cube shall be selected by user in the control display and indicated in the display by pressing

selection button.

2) When power is first on, crushed ice is automatically selected.
3) If crushed ice is selected and there is ice in the ice bank, geared motor shall operate to dispense crushed ice when

dispenser switch is pressed.

4) If Ice Cube is selected and there is ice in the ice bank, geared motor and ice solenoid shall operate to dispense 

Ice Cube when dispenser press switch is pressed.

7. Water Dispenser Functions

1) If user selects water in the control display, LED is indicated and selected.
2) As water dispenser is directly connected to the water tap, water shall be supplied by opening water solenoid valve

which is fixed at right side of machine room when user select water in the control display and press dispenser press
switch. 

- 35 -

- 55 -

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 thermostat
terminals.
Power conducts : OK.
If not : 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.

No electric
power on
thermostat.

O.L.P is off.

No electric power on compressor. - Faulty compressor.

Faulty PTC.

Disconnected copper wire.

Faulty terminal contact.

Disconnected. 

Thermostat is off.- Gas leaks completely.

Faulty terminal connection.

Capacity of O.L.P is small.

Characteristics of O.L.P is bad.

Bad connection.

Power is 
disconnected.

Sensor breakage.
Sealed part leak.
Bellows leak.

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.

Terminal 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.

Too loose.
Assembly is not possible.