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NOTE 1)  When the Freezer temp control button and Super freezing button are pushed and hold for 1 second or longer,

ERROR CODE of each sensor is expressed.

 Failure of RT sensor :  Refrigerator temperature OFF

Freezer temperature 1st and 3rd LED OFF

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NOTE 1)  When the Refrigerator temp control button and ON/OFF button are pushed and hold for 1 second or longer,

ERROR CODE of RT sensor is expressed.

 Failure of RT sensor :  Refrigerator temperature 1st and 3rd LED OFF

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1

2

3

4

Failure of Freezer sensor

Failure of Refrigerator sensor

Failure of Refrigerator Eva sensor

Failure of RT sensor

All LED

off

All LED

off

All LED

off

All LED on but

1st LED off

All LED on but

2nd LED off

All LED on but

3rd LED off

Cut or short circuit wire

Cut or short circuit wire

Cut or short circuit wire

Cut or short circuit wire

* Inspect

connecting
wires on
each sensor

NOTE 1)

1

2

3

Failure of Refrigerator sensor

Failure of Refrigerator Eva sensor

Failure of RT sensor

Cut or short circuit wire

Cut or short circuit wire

Cut or short circuit wire

* Inspect

connecting
wires on
each sensor

NOTE 1)

(1) Function to check the testing function of PCB and refrigerator and to find where the trouble.

(2) The test switch is on the MAIN PCB of refrigerator.

TEST FUNCTION is released and RESET after MAX. 2hours regardless of TEST MODE.

(3) If the buttons on TOP COVER is pushed during TEST MODE, Function is not operated and only BUZZER ring with

"DING~"

(4) After the end of TEST MODE, pull out the power cord and plug it in again(RESET).

(5) If a ERROR occurs during the TEST MODE, TEST FUNCTION is released and DISPLAY represent ERROR CODE.

(6) If the TEST swithch is pushed during ERROR CODE, TEST FUNCTION is not operated.

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- 26 -

Inspect freezer Room
operation

Inspect fresh Room
operation

Inspect refrigerator
Room and Fan
operation

Inspect Froast Removal
heater operation.

1) Continuous operation of the compressor
2) Continuous operation of the freezer fan
3) Show t1 on the freezer temp display

1) Continuous operation of the compressor
2) Continuous operation of the freezer fan
3) Continuous operation M-F Cycle
4) Show t2 on the freezer temp display

1) Continuous operation of the compressor
2) Continuous operation of the freezer fan
3) Continuous operation R-F Cycle
4) Show t3 on the freezer temp display

1) Compressor OFF
2) Freezer fan is turned OFF
3) Froast Removal heater ON
4) Show t4 on the freezer temp display

Return to the initial condition (RESET)

Press TEST button once

Press TEST button once
in the state of 
TEST MODE 1

Press TEST button once
in the state of 
TEST MODE 2

Press TEST button once
in the state of 
TEST MODE 3

Press TEST button once
in the state of 
TEST MODE 3

TEST 1

TEST 2

TEST 3

TEST 4

RESET

Inspect freezer Room
operation

Inspect refrigerator
Room operation

1) Continuous operation of the compressor
2) Continuous operation of the freezer fan
3) All LEDs are on, but all Refrigerator temp
LEDs are off

1) Continuous operation of the compressor
2) Continuous operation of the freezer fan
3) Continuous operation R-F Cycle
4) All LEDs are on

Return to the initial condition (RESET)

Press TEST button once

Press TEST button once
in the state of 
TEST MODE 1

Press TEST button once
in the state of 
TEST MODE 2

TEST 1

TEST 2

RESET

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- 27 -

Inspect freezer And
Refrigerator Room
operation

1) Continuous operation of the compressor
2) Continuous operation R-F Cycle
3) 1st, 3rd and 5th LED of Refrigerator temp

are on, other LEDs are off

1) Continuous operation of the Heater

If a R-EVA sensor temperature is over 10°C
or 10 minutes later, then Heater is off

2) 2nd and 4th LED of Refrigerator temp is on,

other LEDs are off

Return to the initial condition (RESET)

Press TEST button once

Press TEST button once
in the state of 
TEST MODE 1

Press TEST button once
in the state of 
TEST MODE 2

TEST 1

TEST 2

RESET

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TRANS secondary side is composed of electric power circuits for RELAY driving electricity (12Vdc) and for supplying
electricity to MICOM and IC (5Vdc). The voltage in each part is as follows.

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- 28 -

PARTS

VA1

CE5

CE6

VOLTAGE

230Vac

12Vdc

5Vdc