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1. This feature is to shorten the cooling time of the refrigerator by keeping the comp fan running for a while.  When the Quick

Cooling button is pushed, the Quick Cooling LED turns on in order and the comp keeps on running.  In 2 hours, the Quick
Cooling mode will be cleared.

2. When the Defrosting mode starts while in the Quick Cooling mode, defrosting is performed.  After that, the Quick Cooling

mode resumes for the remaining time.

3. When the Quick Cooling button is pushed while in the Defrosting mode, the Quick Cooling mode starts in 7 minutes after

the completion of the defrosting even though the Quick Cooling LED turns on.

4. If a power failure occurs while in the Quick Cooling mode, the Quick Cooling mode will be cancelled when the power is

restored.

5. If the Quick Cooling mode is selected when it has not passed 7 minutes since the comp stopped, the comp will start

running after the remaining time elapses.

1. For 2 minutes while the door of the freezer or the refrigerator is open or after it is

closed, the LED turns on in the order of       

→

→

→

→

→

→

→

→

and then the all LEDs are kept on.

2. While the LED turns on as described above, the sensor detects the location of the

food and so on.

1. This feature is to alarm by the buzzer when the door of the freezer or the refrigerator is not closed in 1 minute after it is

opened.

2. In 1 minute after the door is opened, the buzzer sounds three times at the interval of 0.5 second.  After that, every 30

seconds, the buzzer sounds three times with 0.5 sec ON/OFF.

3. The alarming is cancelled when the door of the freezer or the refrigerator is closed while the buzzer sounds.

1. When the button on the front Display is pushed, “ring-” sound is produced and it works as follows.

- 17 -

FREEZER OR

REFRIGERATOR

DOOR

BUZZER

CLOSE

OPEN

CLOSE

OPEN

CLOSE

three

times

three

times

three

times

three

times

within

1 minute

1 minute

30

seconds

30

seconds

(EX.)

1. The defrosting is performed each time when the total running time of the compressor reaches 7 hours.

2. After the power is turned on (or restored after a power failure), the defrosting starts when the total running time of the

compressor reaches 4 hours.

3. When the temperature of the defrosting sensor reaches 13 °C or above, the defrosting stops.  If the temperature does not

reach 13 °C in 2 hours after the defrosting starts, the defrosting error code is displayed. 
(Refer to 1-8. Error Diagnostic Mode.)

4. With the defective defrosting sensor (cut or short-circuited wire), the defrosting will not be performed.

The electric components, such as the comp, defrosting heater, and cooling fan, start sequentially to avoid the noise and
damage to the part, which may result from the simultaneous start of various components on turning the power on or after
the completion of a test.

If the temp of the defrosting 
sensor is 13 °C or above
(For the initial use after the 
purchase or grounding)

If the temp of the defrosting 
sensor is below 13 °C
(After a power failure or SVC)

When returned from the Test mode

- 18 -

in 0.5 sec

in 7 min

in 0.5 sec

in 10 sec

in 0.5 sec

1. The error diagnostic mode allows the SVC when a fault that may affect the performance of the product occurs while

operating the product.

2. Even if the function control button is pushed when an error occurs, the function will not be performed. However, the

recognition tone (beep~) sounds.

3. When the error is cleared while the error code is displayed due to a fault, the appliance returns to the normal condition

(Reset).

4. The error code is displayed by the refrigerator temp indication LED on the display of the refrigerator while the remaining

LEDs are off.

- 19 -

R4 R3 R2 R1

▼ 

FOR R-B52DZ/R-B55DZ

: ON

: OFF

: NORMAL

1.

2.

3.

4.

5.

Faulty freezer (F) sensor 
(on the ceiling of the freezer)

Faulty refrigerator(R) sensor 
(on the ceiling of the
refrigerator)

Faulty defrosting sensor

Faulty intake air
temperature sensor 
(in the main PCB)

Defrosting failure

Cut or short-circuited wire of
freezer sensor

Cut or short-circuited wire of
refrigerator sensor

Cut or short-circuited wire of
defrosting sensor

Cut or short-circuited wire of
intake air temperature sensor

Cut or disconnected wire of
defrosting heater or temperature
fuse(indicated at least 4 hours
later after the error occurs)

v

15 min ON/

15 min OFF

v

v

v

v

v

No defrosting

v

v

1. The test mode allows checking the PCB and the function of the product as well as finding out the defective part in case of

an error.

2. The test button is on the main PCB of the refrigerator (Test S/W).  The test mode will be cleared in 2 hours regardless of

the type of the test mode and then reset.

3. While in the test mode, the function control button is not recognized though the recognition tone (beep~) sounds.

4. After exiting the test mode, be sure reset by unplugging and then plugging in the appliance.

5. If an error, such as a sensor failure, is detected while in the test mode, the test mode is cleared and the error code is

displayed.

6. While an error code is displayed, the test mode will not be activated even if the test button is pushed.

TEST 1

Push the test button 

1. Continuous operation of the comp

once.

2. Continuous operation of the freezer fan
3. Defrosting heater OFF
4. Every display LED ON

TEST 2

Push the test button 

1. Comp OFF

Reset when the door

once while in the 

2. Freezer fan OFF

is opened.

TEST MODE 1.

3. Defrosting heater OFF
4. Every display LED OFF

(except the refrigerator “Medium” LED)

TEST 3

Push the test button

1. Comp OFF

Reset if the temp of

once while in the 

2. Freezer fan OFF

the defrosting sensor

TEST MODE 2.

3. Defrosting heater ON

is 13 °C or above.

4. Every display LED OFF

(except the refrigerator “High, Medium,

Low” LEDs)

Reset

Push the test button

Reset to the default setting

The compressor will

once while in the

start in 7 minute-delay.

TEST MODE 3.

- 20 -

* LED Check Mode: When the refrigerator temp control button and the quick cooling button are pushed and held together for

1 min or longer, every LED on the display turns on simultaneously.  When the buttons are released, the previous mode is
restored.