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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.

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Error Code

Display

1

2

3

4

Faulty refrigerator
(R) sensor 

Faulty defrosting
sensor

Faulty Room
temperature sensor 
(in the main PCB)

Defrosting failure

r

d

when checking
LED, the error
code display all off.

H

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)

15 min ON/

15 min OFF

standard

RPM

standard

RPM

standard

RPM

standard

RPM

No defrosting

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 if the temp of

once while in the 

2. Freezer fan OFF

the defrosting sensor

TEST MODE 1.

3. Defrosting heater ON

is 10 °C or above.

4. Every display LED OFF

(except the refrigerator temp'
status 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 2.

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* LED Check Mode: When the refrigerator temp control button and the Super Cool button are pushed and held together for 1 sec

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

* FAN RPM VARIETY CHECK : Press super cool button and the refrigerator temp control button are pushed and held

together for 1 sec or longer, FAN RPM is reversed for 30 second (HIGH 

↔ 

STANDARD) and return to the previous condition.

<TEST MODE2 STATUS LED>

<TEST MODE1 STATUS LED>

TRANS 2nd part 

Ⓐ

is composed of the RELAY-operating POWER(12Vdc) and power (5Vdc) supplying POWER to MICOM

and IC.
TRANS 2nd part 

Ⓑ

is composed of the CIRCUIT supplying POWER(12Vdc) to DISPENSER PUMP MOTOR.

Voltage of each part is as follows.

VA1 is a part preventing from over-voltage and noise.

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PART 

Ⓐ

PART

both ends of VA1

both ends of CE1

both ends of CE2

both ends of CC2

VOLTAGE

220 Vac

17 Vdc

12 Vdc

5 Vdc

PART 

Ⓑ

PART

both ends of 2nd part

both ends of CE6

both ends of CE7

VOLTAGE

13 Vdc

15 Vdc

12 Vdc

This circuit is to generate the base clock for calculating time and the synchro clock for transmitting data from and to the
inside logic elements of the IC1(MICOM).  Be sure to use the authentic parts since the calculating time by the IC1 may be
changed or it will not work if the OSC1 SPEC is changed.

The RESET circuit is for allowing all the functions to start at the initial conditions by initializing various parts including the
RAM inside the MICOM (IC1) when the power is initially supplied or the power supply to the MICOM is restored after a
momentary power failure.  For the initial 10ms of power supply, ‘LOW’ voltage is applied to the MICOM RESET terminal.
During a normal operation, 5V is applied to the RESET terminal. (If a trouble occurs in the RESET IC, the MICOM will not
work.)

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