LG Electronics SKSWK245RS User Manual

SERVICE MANUAL

BUILT IN WINE CELLAR

MODEL : SKSCW181RP

SKSCW241RP

CONFIDENTIAL

www.signaturekitchensuite.com

MFL67262420

Any reproduction, duplication, distribution (including by way of email, facsimile or other electronic means), publication,

modication, copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you have obtained

the prior written consent of the SIGNATURE KITCHEN SUITE entity from which you received this Service Manual.

The material covered by this prohibition includes, without limitation, any text, graphics or logos in this Service Manual.

- 2 -

CONTENTS

1. SAFETY PRECAUTIONS ............................................................................................................................................................ 3

2. PRODUCT STANDARDS ............................................................................................................................................................ 4

3. CIRCUIT DIAGRAM .................................................................................................................................................................5-6

4. SPECIFICATIONS ....................................................................................................................................................................7-9

5. MICOM FUNCTION ..............................................................................................................................................................10-11

6. TROUBLE SHOOTING.........................................................................................................................................................12-24

7. TROUBLE SHOOTING WITH ERROR DISPLAY ................................................................................................................ 25-43

8. HOW TO DISASSEMBLE AND ASSEMBLE

1. Door ........................................................................................................................................................................................44

2. Knock-on ..........................................................................................................................................................................45-46

3. Top Cover ..............................................................................................................................................................................47

4. Door Switch / SDS PCB / Temperature sensor ..................................................................................................................48

5. Machine Room Cover ........................................................................................................................................................... 49

6. Machine Room Cycle.......................................................................................................................................................50-53

7. Wi-Fi .......................................................................................................................................................................................54

8. Power Cord ............................................................................................................................................................................55

9. Main PCB ..........................................................................................................................................................................56-57

10. Control Panel ......................................................................................................................................................................58

11. Shelf .....................................................................................................................................................................................59

12. Slide Rail ............................................................................................................................................................................. 60

13. Holder Rail .......................................................................................................................................................................... 61

14. Top Duct ...............................................................................................................................................................................62

15. Grille Fan .............................................................................................................................................................................63

16. Multi Duct ............................................................................................................................................................................64

17. Defrost Sensor ...................................................................................................................................................................65

18. Barrier ..................................................................................................................................................................................66

9. SEALED SYSTEM REPAIR METHOD OF REFRIGERATOR WITH R600A REFRIGERANT ...........................................67-73

10. EXPLODED VIEW .............................................................................................................................................................74-81

- 3 -

1. SAFETY PRECAUTIONS

Please read the following instructions before servicing your refrigerator.

1. Unplug the powr before handing any electrical componets.

2. Check the rated current, voltage, and capacity.

3. Take caution not to get water near any electrical components.

4. Use exact replacement parts.

5. Remove any objects from the top prior to tilting the product.

- 4 -

2. PRODUCT STANDARDS

Model Name

SKSCW181RP SKSCW241RP

Effective inner capacity 274L (9.7 Cu.ft) 385L (13.6 Cu.ft)

Outer dimension (W x D x H)

"445 × 607× 2121 mm

(17 1/2 x 23 7/8 x 83 1/2 inch)"

"603 × 607× 2121 mm

(23 3/4 x 23 7/8 x 83 1/2 inch)"

Rated voltage and frequency 115V / 60Hz 115V / 60Hz

Product weight (kg) 139kg (306lb) 162kg (357lb)

Cooling method Fan Cooling Fan Cooling

Defrost system Natural Defrost system Natural Defrost system

Lay-out

Room 2 (1 Barrier) 3 (2 Barrier)

Shelf 9 (Upper:4EA, Lower:5EA) 8 (Upper:4EA, Mid:2EA, Lower:2EA)

Temperature

control

Upper-Room Micom Control Micom Control

Middle-Room - Micom Control

Lower-Room Micom Control Micom Control

Cycle

Compressor driving method

Linear Linear

Evaporator Rollbond Type Rollbond Type

Condenser Micro Channel Condenser (Al) Micro Channel Condenser (Al)

Compressor Oil Mineral / Freol Alpha 3G (3cst) (120cc) Mineral / Freol Alpha 3G (3cst) (120cc)

Type of refrigerant R 600a (42g) R 600a (44g)

Capillary tube 0.75 0.75

Dryer (Capillary Tube) Molecular-sieves XH-9 Molecular-sieves XH-9

Valve 3Way Valve 4Way Valve

"Electrical parts

standard"

Heater AC 115V / 33W * 2EA AC 115V / 33W * 3EA

Overload protective device 4MPS41F9-01 4MPS41F9-01

Cold Fan motor DC 12V DC 12V

Fan motor for cooling

condenser

DC 12V DC 12V

Inside lamp

15.4W 28.2W

Main Fuse 125V / 10A 125V / 10A

Valve DC 12V DC 12V

Model Name

- 5 -

3. CIRCUIT DIAGRAM

MBM6633

5905

24” : W1(Upper)/W2(Middle)/W3(Lower)

18” : W1(Upper)/W2(Lower)

CON1/

CON1_1

2

4

6

8

10

12

14

16

18

20

1

3

5

7

9

11

13

15

17

22

21

19

WATER PIPE HEATER

DEW HEATER

HALL IC

ICE MAKER SENSOR

ICE MAKER MOTOR

POWER

CORD

FUSE

ICE MAKER MOTOR TEST SWITCH

DISPENSER SWITCH

ICE MAKER MOTOR ON-OFF SWITCH

WH

BK

RD

BO

BL

SB

GY/RD

WH/BK

YL

PK

BO/BL

1

3

5

7

9

11

13

15

17

19

21

23

2

4

6

8

10

12

14

16

18

20

22

24

VCC

GND

VCC

GND

VCC

GND

COM

A

B

B-

A-

1

2

5

6

3.4

3WAY/4WAY

VALVE

1

3

5

7

2

4

6

8

9

11

13

15

17

19

21

23

25

26

10

12

14

16

18

20

22

24

W1 FAN

MACHINE ROOM FAN

HYGIENE LED LIGHT

HYGIENE FAN MOTOR

W1 LED PWM LIGHT

W2 FAN

W3 FAN

YL

GY

BO

RD

BL

PK

RD/YL

YL/BL

WH/BN

PR/WH

BK

BN

PR

WH

WH/RD

BL/RD

SB/BK

BO/WH

BO/BL

YL/BK

WH/BK

BL/WH

W2 LED PWM LIGHT

W3 LED PWM LIGHT

SMART

BUZZER

H_SENSOR

DOOR 1 SWITCH

DOOR 2 SWITCH

DOOR 3 SWITCH

DAMPER

HEATER

H_SENSOR

BK

SB

PK

BL/WH

1

2

3

5

7

9

11

13

15

17

19

21

A

5V

GND

A-

B-

5V

GND

SIG

B

23

25

27

29

31

33

4

2

6

8

10

12

14

16

18

20

22

24

26

28

30

32

34

OUTDOOR SENSOR

RD

GY/WH

BL

BO

WH/RD

BN

STEPPING

MOTOR DAMPER

STEPPING

MOTOR DAMPER

A

A-

B-

B

KNOCK ON

SENSOR 1

YL

BK

RD

1

2

3

5V

GND

SIG

KNOCK ON

SENSOR 2

YL

BK

RD

PR

BO/WH

12V

5V

TX

RX

GND

RX

TX

LINEAR

COMPRESSOR

GROUNDING

OVERLOAD

PROTECTION

DEVICE

OVERLOAD

PROTECTION

DEVICE

BL

RD

BK

1

2

3

4

5

6

7

CIRCUIT DIAGRAM

8.0 SEC

9.0 SEC

10.0 SEC

11.0 SEC

D-N※ D-N : Defrosting Heater- N

GROUNDING

1

2

3

4

5

6

7

FUSE-M

W2

DEFROSTING

HEATER

W2 DEFROSTING HEATER

W3 DEFROSTING HEATER

W1 DEFROSTING HEATER

W1

DEFROSTING

HEATER

W3

DEFROSTING

HEATER

1

2

3

4

5

6

7

8

9

10

11

PK

BN

WH

BK

GR/YL

WH

BK

W1 SENSOR

W1 DEFROSTING SENSOR

W2 SENSOR

W2 DEFROSTING SENSOR

W3 SENSOR

W3 DEFROSTING SENSOR

W1 LED LIGHT

W2 LED LIGHT

W3 LED LIGHT

- 6 -

3. CIRCUIT DIAGRAM

MBM66335905

24” : W1(supérieur)/W2(Moyen)/W3(*OG¨SJFVS)

18” : W1(supérieur)/W2(*OG¨SJFVS)

CON1/

CON1_1

2

4

6

8

10

12

14

16

18

20

1

3

5

7

9

11

13

15

17

22

21

19

CHAUFFAGE DE LA CONDUITE D’EAU

CHAUFFAGE DE LA ROSÉE

CIRCUIT INTÉGRÉ EFFET HALL

CAPTEUR DE L’APPAREIL À GLAÇONS

MOTEUR DE L’APPAREIL À GLAÇONS

FICHE

SECTEUR

FUSIBLE

INTERRUPTEUR DE TEST MOTEUR DE L’APPAREIL À GLAÇONS

INTERRUPTEUR DU DISTRIBUTEUR

INTERRUPTEUR MARCHE/ARRÊT MOTEUR DE L’APPAREIL À GLAÇONS

WH

BK

RD

BO

BL

SB

GY/RD

WH/BK

YL

PK

BO/BL

1

3

5

7

9

11

13

15

17

19

21

23

2

4

6

8

10

12

14

16

18

20

22

24

CAPTEUR W1

CAPTEUR DE DÉGIVRAGE W1

CAPTEUR W2

CAPTEUR DE DÉGIVRAGE W2

CAPTEUR W3

CAPTEUR DE DÉGIVRAGE W3

ÉCLAIRAGE LED W1

ÉCLAIRAGE LED W2

ÉCLAIRAGE LED W3

VCC

GND

VCC

GND

VCC

GND

COM

A

B

B-

A-

1

2

5

6

3.4

SOUPAPE

3 VOIES/4 VOIES

1

3

5

7

2

4

6

8

9

11

13

15

17

19

21

23

25

26

10

12

14

16

18

20

22

24

VENTILATEUR W1

VENTILATEUR LOCAL TECHNIQUE

LAMPE LED HYGIÈNE

MOTEUR VENTILATEUR HYGIÈNE

LAMPE LED PWM W1

VENTILATEUR W2

VENTILATEUR W3

YL

GY

BO

RD

BL

PK

RD/YL

YL/BL

WH/BN

PR/WH

BK

BN

PR

WH

WH/RD

BL/RD

SB/BK

BO/WH

BO/BL

YL/BK

WH/BK

BL/WH

LAMPE LED PWM W2

LAMPE LED PWM W3

ALARME

INTELLIGENTE

CAPTEUR

D’HUMIDITÉ

INTERRUPTEUR PORTE 1

INTERRUPTEUR PORTE 2

INTERRUPTEUR PORTE 3

CHAUFFAGE

DU REGISTRE

Capteur d’humidité

BK

SB

PK

BL/WH

1

2

3

5

7

9

11

13

15

17

19

21

A

5V

GND

A-

B-

5V

GND

SIG

B

23

25

27

29

31

33

4

2

6

8

10

12

14

16

18

20

22

24

26

28

30

32

34

CAPTEUR EXTÉRIEUR

RD

GY/WH

BL

BO

WH/RD

BN

REGISTRE DU

MOTEUR PAS À PAS

AFFICHER

REGISTRE DU

MOTEUR PAS À PAS

A

A-

B-

B

TAPER SUR

LE CAPTEUR 1

YL

BK

RD

1

2

3

5V

GND

SIG

TAPER SUR

LE CAPTEUR 2

YL

BK

RD

PR

BO/WH

12V

5V

TX

RX

GND

RX

TX

COMPRESSEUR

LINÉAIRE

DISPOSITIF DE

PROTECTION

CONTRE LES

SURCHARGES

DISPOSITIF DE

PROTECTION

CONTRE LES

SURCHARGES

BASES DU

COMPRESSEUR

BL

RD

BK

1

2

3

4

5

6

7

SCHÉMA DE CIRCUIT

D-N

※ D-N : CHAUFFAGE DE DÉGIVRAGE- N

MISE À TERRE

1

2

3

4

5

6

7

FUSIBLE-M

1

2

3

4

5

6

7

8

9

10

11

PK

BN

WH

BK

GR/YL

WH

BK

RÉACTEUR

NEUTRE

SOUS

TENSION

CHAUFFAGE DE

DÉGIVRAGE W2

CHAUFFAGE DE

DÉGIVRAGE W3

CHAUFFAGE DE

DÉGIVRAGE W1

CHAUFFAGE DE DÉGIVRAGE W2

CHAUFFAGE DE DÉGIVRAGE W3

CHAUFFAGE DE DÉGIVRAGE W1

8.0 SEC

9.0 SEC

10.0 SEC

11.0 SEC

- 7 -

4. SPECIFICATIONS

● SPECIFICATIONS

● DIMENSIONS

ITEMS SPECIFICATIONS

DOOR DESIGN Side Rounded

DIMENSIONS

18W

17 1/2 x 23 7/8 x 83 1/2 (W X D X H)

24W

23 4/3 x 23 7/8 x 83 1/2 (W X D X H)

NET WEIGHT

18W 139kg (306lb)

24W 162kg (357lb)

COOLING SYSTE M Fan Cooling

TEMPERATURE CONTROL Micom Control

DEFROSTING SYSTEM

Natural Defrost System

DOOR FINISH GI

HANDLE TYPE Bar

INNER CASE Aluminum

INSULATION Polyurethane Foam

Description SKSCW181RP SKSCW241RP

Width Width (A) 17 1/2"(445mm) 23 3/4"(603mm)

Depth

Depth with 3/4"(19mm) Door panel (B) 24 3/4"(629mm) 24 3/4"(629mm)

Depth with door (No panel) ( C ) 23 7/8"(607mm) 23 7/8"(607mm)

Cabinet depth without Door (D) 22"(558mm) 22"(558mm)

Door Open 90º (E) 21 7/8"(556m) 28 1/8"(713mm)

Door Open 115º (F) 20 1/2"(520mm) 26 1/2"(659mm)

Height

Min (G) 83 1/2"(2121mm) 83 1/2"(2121mm)

Max (H) 84 1/2"(2146mm) 84 1/2"(2146mm)

ITEMS SPECIFICATIONS

COMPRESSOR Linear

EVAPORATOR Rollbond Type

CONDENSER Micro channel Condenser (Al)

REFRIGERANT

18W R 600a (42g)

24W R 600a (44g)

LUBRICATING OIL

Mineral / Freol Alpha 3G (3cst)

(120cc)

LAMP LED Module

(E)

DOOR OPEN 90˚

FRONT VIEW

SIDE VIEW

TOP VIEWS

DOOR OPEN 115˚

(F)

(A)

(B)

(C)

(D)

(G)

min.

(H)

max.

(G)

min.

(H)

max.

- 8 -

Control Panel

LED Interior

Lighting

Storage Rack

Zone Divider

LED Interior

Lighting

● Parts

MODEL : SKSCW181RP

- 9 -

Control Panel

LED Interior

Lighting

Storage Rack

Zone Divider

LED Interior

Lighting

Zone Divider

LED Interior

Lighting

● Parts

MODEL : SKSCW241RP

- 10 -

5. MICOM FUNCTION

● Operating panel drawing (Applied display is different for each model)

- MODEL : SKSCW181RP

- MODEL : SKSCW241RP

NOTCH

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1 2 3 4 5 6 7 8 9

Upper/

Lower

Set

Temper

ature

55˚F 54˚F 53˚F 52˚F 51˚F 50˚F 49˚F 48˚F 47˚F 46˚F 45˚F 44˚F 43˚F 42˚F 41˚F 64˚F 63˚F 62˚F 61˚F 60˚F 59˚F 58˚F 57˚F 56˚F

NOTCH

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1 2 3 4 5 6 7 8 9

Upper/

Middle

Lower/

Set

Temper

ature

55˚F 54˚F 53˚F 52˚F 51˚F 50˚F 49˚F 48˚F 47˚F 46˚F 45˚F 44˚F 43˚F 42˚F 41˚F 64˚F 63˚F 62˚F 61˚F 60˚F 59˚F 58˚F 57˚F 56˚F

- 11 -

- Model : SKSCW241RP

● Description of Function

- MODEL : SKSCW181RP



Temperature setting

: Indicates the set temperature of the Refrigerator compartment in Celsius or Fahrenheit.



Humidity

: The FAN motor for humidity in the refrigerator will be activated or deactivated whenever pressing the button.



Light

: Inner LED turns on/off whenever pressing the button



Wi-Fi

: The Wi-Fi Icon is blinked when press and hold the button for 3 sec. And then,

- Wi-Fi Connecting : Wi-Fi Icon turns on.

- Wi-Fi Disconnecting : Wi-Fi Icon turns off after 3 min.



Power

: The Power Icon always on. If the power button is pressed and hold for 3 sec., it turns off.











- 12 -

6. TROUBLE SHOOTING

Open the PCBA Cover

Check the LED blinking times

(Refer to the next chapter for LED blinking and actions.)

If the Comp is normal,

the LED does not blink.

Open the PCBA Cover

Check the LED blinking times

(Refer to the next chapter for LED blinking and actions.)

If the Comp is normal,

the LED does not blink.

1. COMP Bad Operation

- 13 -

2. Simple Check Flow Chart

- Not Cooling (LED Blinking)

- Not Cooling (LED No Blinking)

Check Comp.

Y

N

PCBA

Output

> 60V?

N

Y

LED 7 Blinks

LED 2 Blinks

LED 1 Blinks

Replace PCB

Comp.

Action?

Replace PCB

Y

LED6 Blinks

Comp.

Action?

Harness

wiring?

Y

Repair Harness

N

LED 8 Blinks

Replace PCBReset

LED 7 Blinks

LED 1 Blinks

LED 2 Blinks

LED 6 Blinks

LED 8 Blinks

LED 3 Blinks LED 3 Blinks

LED 5 Blinks

Comp.

Action?

LED 5 Blinks

Check C

omp.

Check Comp.

Check

Cycle leakage

Cycle

Cycle leakage

Check

Cycle leakage

About 5min

LED 4 Blinks

Replace PCB

LED 4 Blinks

About 5min

Reset

Test Mode

1 Input

Test Mode

1 Input

Test Mode

1 Input

Test Mode

1 Input

Test Mode

1 Input

Test Mode

1 Input

Test Mode

1 Input

Test Mode

1 Input

PCBA

Output

> 60V

Replace PCB

Y

N

Y

N

LED Trip Information

1 Current/Voltage Sensing Error

2 Over Stroke

3 Comp Connection Error

4 Over Voltage Error

5 Comp Lock Error

6 Over Current Error

7 IPM Error

8 Communication Error

Comp.

Action?

PCBA

Output

> 60V

Replace PCB

N

Test Mode

1 Input

About 5min

- 14 -

3. What to do per LED Blinking and Trip protection logic

(1) FCT0 Trip and LED Blinking 1 time (FCT0 Fault)

→ Purpose : To detect the compressor voltage and current sensing error.

→ Restart every 30 seconds after compressor off.

Blink BlinkOFF OFF

LED 1 Blinks

Replace PCB

LED 1 Blinks

About 5minReset

Test Mode

1 Input

- 15 -

3. What to do per LED Blinking and Trip protection logic

(2) Stroke Trip and LED Blinking 2 times (Stroke Trip)

→ Purpose : Protection piston crash by abnormally large Stroke.

→ Case 1. Do not operate Comp.

: Harness connection failure between the PCB, Comp, Capacitor.

→ Case 2. Do operate Comp. intermittently

: Condenser Fan or Freezer Fan Error.

System Error like water-clogging, capillary-clogging, refrigerant-leakage

→ Logic: After the Comp. Off every 1 minute restart Comp.

Blink Blink Blink BlinkOFF OFF

Y

Check

the Protection Logic

Check Stroke or

LED Blinking 2 times

(Stroke Trip)

Do not operate

Comp.?

Y

N

Compressor is operate

intermittently

Check Comp.

Replace

Compressor

N

Reset

Stroke Trip

occur?

Check the

leakage and cycle

Y

Recheck

Check

Harness connection

Repair Harness

N

- 16 -

3. What to do per LED Blinking and Trip protection logic

(3) No Connect Trip and LED Blinking 3 times (No Connection Trip)

→ Purpose : Prevention Over-Voltage and Over-Current by detecting connection error check.

→ Harness connection failure between PCB, Comp, Capacitor.

Comp. insulation breakdown.

→ Logic : After the Comp. Off every 40 seconds restart Comp.

Blink Blink Blink BlinkBlinkBlink OFF OFF

Y

Check

the Protection Logic

Check

No Connect or

LED blinking 3 times

(No Connect Trip)

Do not operate

Comp.?

Y

N

Check Comp.

Replace

Compressor

N

Reset

No Connect Trip

occur?

Replace PCB

Y

Recheck

Check

Harness connection

Repair Harness

N

- 17 -

3. What to do per LED Blinking and Trip protection logic

(4) Over Voltage Trip and LED Blinking 4 times (Over Voltage Trip)

→ Purpose : Protection the PCB by Over Voltage

→ Cause : Applying the Over Voltage to DC Link(450VDC or higher)

→ Logic: Restart every 90 seconds after compressor off.

Blink Blink Blink Blink BlinkBlinkBlink Blink OFF OFF

LED 4 Blinks

Replace PCB

LED 4 Blinks

About 5minReset

Test Mode

1 Input

- 18 -

3. What to do per LED Blinking and Trip protection logic

(5) L/Piston Trip and LED Blinking 5 times (Locked Piston)

→ Purpose : Detect locked piston.

→ Cause : Oil shortage of the cylinder, Cylinder or Piston damage, clogging the discharge,

Comp. internal debris.

→ Logic : After the Comp. Off every 2 min 30 seconds restart Comp.

Blink Blink BlinkBlink Blink OFF

Check

the Protection Logic

Check the L/Piston or

LED blinking 5 times

(Locked Piston Trip)

Do not operate

Comp.?

Recheck

Reset

Do not operate

Comp.?

N

Y

Replace

Compressor

Clogging the Cycle?

N

Y

Repair

Sealed system

- 19 -

3. What to do per LED Blinking and Trip protection logic

(6) Current Trip and LED Blinking 6 times (Current Trip)

→ Purpose : Protection Over-Current(Over-Load)

→ Cause : Abnormally ambient temperature(Over 43°C), Abnormally conditions like

Shield machine room etc. Condenser Fan failure, Comp. failure, PCB failure

(IPM breakdown)

Oil shortage of the cylinder, Cylinder or Piston damage, clogging the discharge,

Comp. internal debris.

→ Logic : After the Comp. Off every 6 minutes restart Comp.

Blink Blink Blink BlinkBlinkBlink OFF

Check

the Protection Logic

Check the Current or

LED blinking 6 times

(Current Trip)

Compressor is operate

intermittently

Y

Check the

Compressor failure

Replace

Compressor

N

Reset

Y

Current trip

occur?

Check the

leakage and cycle

Recheck

Check the

PCB output

Y

Replace PCB

N

Y

Replace

Compressor

Repair

Sealed system

Y

Do not operate

Comp.?

Clogging the Cycle?

N

Y

- 20 -

3. What to do per LED Blinking and Trip protection logic

(7) IPM Fault Trip and LED Blinking 7 times (IPM Fault)

→ Purpose : Protection Over-Current by failure IPM(IPM short)

→ Cause : IPM Short and failure

→ Logic : After the Comp. Off every 20 seconds restart Comp.

Blink Blink Blink

Blink Blink

BlinkBlink OFF

LED 7 Blinks

Replace PCB

LED 7 Blinks

About 5minReset

Test Mode

1 Input

- 21 -

3. What to do per LED Blinking and Trip protection logic

(8) Comp Tx Error Trip and LED Blinking 8 times (Communication Error)

→ Purpose : Detection communication error with the Micom of the refrigerator control.

→ Cause : Communication Error

→ Logic : Only LED blinking without the Comp. Off

(Comp. is operate command before communication error)

Blink Blink Blink

BlinkBlink OFF

LED 8 Blinks

Replace PCBReset

LED 8 Blinks

About 5min

Test Mode

1 Input

- 22 -

4. Check the PCB Output

→ Check output voltage from PCB to Compressor.

→ To judge whether there is any issue with the PCB operation, check the PCB output voltage.

Normal: Voltage 80[V] or higher output at (COMMON,POWER) or (COMMOM,SAVE)

IPM Output check

SAMPLE

Multi

Tester

①

②

- 23 -

5. Check the Compressor & Harness

(1) Check the Harness connection → Step 1. Power off.

(2) Check the Compressor Step 2. Check the Resistance(point A)

Step 3. Check the Harness(INF ohm).

Step 4. Check the Resistance(point B)

Step 5. Check the Resistance(point D)

Power

off

Check the

Resistance

(point A)

Harness Connection

OK

A~B

Connection error

Check

the Resistance

(point B)

Check

the Resistance

(point D)

Replace

Compressor

B~D

Connection error

Check

the Harness

Y

N

Y

N

Check

Comp.

terminal

Harness

failure

Y

N

Y

- 24 -

5. Check the Compressor & Harness

→ Comp Terminal resistance measurement (Power & Common, Save & Common)

→ Check the broken-down insulation : Comp. Save - Earth resistance measurement

Sa: Save

Po: Power

Co: Common

Point A

Point B

Point D

Multi

Tester

Multi

Tester

①

②

①

②

FMA102NAMA

Co

Sa

Po

The resistance can differ by few depending on

the surrounding temperature or operating condition.

Mode Resistance

Power(①) 14 ~17

Save(②) 20 ~23

Check insulation break-down

Multi

Tester

Multi

Tester

Earth

②

①

- 25 -

7. TROUBLE SHOOTING WITH ERROR DISPLAY

7-1. Error Code

18 Wine 24 Wine Failure Details

1

Abnormal Internal

Temp. Sensor

ES1/ES2 ES1/ES2/ES3

Internal Temp. Sensor Short or Open

Circuit

2

Abnormal Defrost

Sensor

Ed1/Ed2 Ed1/Ed2/Ed3 Defrost Sensor Short or Open Circuit

3

Abnormal Ambient

Sensor

E rt E rt

Ambient Sensor Short or Open

Circuit

4 Abnormal Wi-Fi E Od E Od

Communication Short or Open Circuit

(Display ↔ Wi-Fi Module)

5

Abnormal Internal Fan

Motor

EF1/EF2 EF1/EF2/EF3

There No Signal Of BLDC Fan Motor

More Then 65 Seconds In Operation

Of Fan Motor (BLDC Motor

Connection, Drive IC Or TR Defect)

6

Abnormal Condenser

Fan Motor

E CF E CF

7

Abnormal

Communication

E CO E CO

Communication Short ior Open

Circuit (Display ↔ Main PCB)

18 Wine

24 Wine

- 26 -

7. TROUBLE SHOOTING WITH ERROR DISPLAY

7-2. PCB Picture - Main PCB

( P/N : EBR867025)

7-3. PCB Picture - Display PCB

P/N : EBR850083

EBR852442

EBR852443

CON202

CON200

CON4

CON2 CON1

CON5

CON6

CON7

CON8

CON10

CON201

18inch 24inch

- 27 -

CON202

WH

BK

RD

BO

BL

SB

GY/RD

WH/BK

YL

PK

BO/BL

1

3

5

7

9

11

13

15

17

19

21

23

2

4

6

8

10

12

14

16

18

20

22

24

VCC

GND

VCC

GND

VCC

GND

COM

A

B

B-

A-

1

2

5

6

3.4

3WAY/4WAY

VALVE

W1 SENSOR

W1 DEFROSTING SENSOR

W2 SENSOR

W2 DEFROSTING SENSOR

W3 SENSOR

W3 DEFROSTING SENSOR

W1 LED LIGHT

W2 LED LIGHT

W3 LED LIGHT

7-4. Refrigerator Sensor Error (S1/S2/S3)

Symptom Check Point

1. S1/S2/S3(Option) 1. Check for a loose connection

2. Check Sensor Resistance

Resistance [Ω]

CON202

[S1]1 pin&3pin

[S2]9 pin&11pin

[S3]17 pin&19pin

Short 0

Open OFF

Other Normal

CON202

[S1]1 pin&3pin

[S2]9 pin&11pin

[S3]17 pin&19pin

Resistance [Ω]

23ºF / -5ºC 38k

32ºF / 0ºC 30k

41ºF / 5ºC 24k

50ºF / 10ºC 19.5k

59ºF / 15ºC 16k

W1 Sensor W2 Sensor

W3 Sensor

- 28 -

RRefrigerator Sensor Error (S1/S2/S3)

Is the Connector disconnected

or loose between Main PCB and

sensor?

Check the Sensor resistance.

Is resistance 0Ω (Sensor short)?

Check the Sensor resistance.

Is resistance OFF (Sensor open)?

Change the

Sensor

Go to 6

Explain to customer

Check the sensor connection.

Is the sensor connection normal?

Reconnect or repair

the connector

Reconnect

or repair the

connector

Change the

Sensor

Replace the

refrigerator

CON202

[S1]1 pin&3pin

[S2]9 pin&11pin

[S3]17 pin&19pin

Resistance [Ω]

23ºF / -5ºC 38k

32ºF / 0ºC 30k

41ºF / 5ºC 24k

50ºF / 10ºC 19.5k

59ºF / 15ºC 16k

Check the Temperature and

resistance refer to the table.

No problem?

CON202

1 4

2

3

5

6

7

- 29 -

7-5. Defrost Sensor Error (d1/d2/d3)

Symptom Check Point

1. d1/d2/d3(Option) 1. Check for a loose connection

2. Check Sensor Resistance

Resistance [Ω]

CON202

[d1]5 pin&7pin

[d2]13 pin&15pin

[d3]21 pin&23pin

Short 0

Open OFF

Other Normal

CON202

[d1]5 pin&7pin

[d2]13 pin&15pin

[d3]21 pin&23pin

Resistance [Ω]

23ºF / -5ºC 38k

32ºF / 0ºC 30k

41ºF / 5ºC 24k

50ºF / 10ºC 19.5k

59ºF / 15ºC 16k

CON202

Defrost Controller

WH

BK

RD

BO

BL

SB

GY/RD

WH/BK

YL

PK

BO/BL

1

3

5

7

9

11

13

15

17

19

21

23

2

4

6

8

10

12

14

16

18

20

22

24

VCC

GND

VCC

GND

VCC

GND

COM

A

B

B-

A-

1

2

5

6

3.4

3WAY/4WAY

VALVE

W1 SENSOR

W1 DEFROSTING SENSOR

W2 SENSOR

W2 DEFROSTING SENSOR

W3 SENSOR

W3 DEFROSTING SENSOR

W1 LED LIGHT

W2 LED LIGHT

W3 LED LIGHT

- 30 -

Defrost Sensor Error (d1/d2/d3)

Is the Connector disconnected

or loose between Main PCB,

Defrost controller and Sensor?

Check the Sensor resistance.

Is resistance 0Ω (Sensor short)?

Check the Sensor resistance.

Is resistance OFF (Sensor open)?

Change the

Sensor

Go to 7

Check the Sensor resistance.

Is resistance normal?

Explain to customer

Reconnect

or repair the

connector

CON202

1

CON7

CON202

[d1]5 pin&7pin

[d2]13 pin&15pin

[d3]21 pin&23pin

Resistance [Ω]

23ºF / -5ºC 38k

32ºF / 0ºC 30k

41ºF / 5ºC 24k

50ºF / 10ºC 19.5k

59ºF / 15ºC 16k

Check the Temperature and

resistance refer to the table.

No problem?

5

2

3

4

6

Check the sensor connection.

Is the sensor connection normal?

Replace the

refrigerator

7

Reconnect or repair the connector

8

Orange & Orange

- 31 -

7-6. Refrigerator Fan Error (F1/F2/F3)

Symptom Check Point

1. F1/F2/F3(Option) 1. Check the air ow

2. Check the PCB Fan motor voltage

TEST MODE 2 Voltage [V]

CON7

[F1]3 pin & 5 pin

[F2]4 pin & 6 pin

[F3]20 pin & 22 pin

11.4 ~ 12.6V

TEST MODE 1 Voltage [V]

CON7

[F1]3 pin & 7 pin

[F2]4 pin & 8 pin

[F3]20 pin & 24 pin

Not 0V, 5V

CON7

1

3

5

7

2

4

6

8

9

11

13

15

17

19

21

23

25

26

10

12

14

16

18

20

22

24

W1 FAN

MACHINE ROOM FAN

HYGIENE LED LIGHT

HYGIENE FAN MOTOR

W1 LED PWM LIGHT

W2 FAN

W3 FAN

YL

GY

BO

RD

BL

PK

RD/YL

YL/BL

WH/BN

PR/WH

BK

BN

PR

WH

WH/RD

BL/RD

SB/BK

BO/WH

BO/BL

YL/BK

WH/BK

BL/WH

W2 LED PWM LIGHT

W3 LED PWM LIGHT

Grille Fan

- 32 -

Refrigerator Fan Error (F1/F2/F3)

Check the Fan Motor voltage

Is Fan Motor voltage 8~12V?

Check the Fan Motor voltage

Is Fan Feed Back voltage 0V, 5V?

Reset the unit and Input

Test1 Mode.

(Push the button 1 time)

Go to 3

Change the

Fan motor

Replace

Main PCB

Replace

Main PCB

2

3

4

5

1

Open the Wine door and Check

for air ow

Check the Fan motor.

Rotate fan using hand.

It feel sticky?

Yes

TEST MODE 2 Voltage [V]

CON7

[F1]3 pin & 5 pin

[F2]4 pin & 6 pin

[F3]20 pin & 22 pin

11.4~12.6V

TEST MODE 1 Voltage [V]

CON7

[F1]3 pin & 7 pin

[F2]4 pin & 8 pin

[F3]20 pin & 24 pin

Not 0V, 5V

Explain to customer

6

Go to 4

Fan Motor

- 33 -

7-7. Condenser Fan Error (CF)

Symptom Check Point

1. CF 1. Check the air ow

2. Check the Connector

3. Check the PCB Fan motor voltage

TEST MODE 1

Voltage [V]

CON7

19 pin & 21 pin

11.4~12.6V

CON7

19 pin & 23 pin

Not 0V, 5V

CON7

1

3

5

7

2

4

6

8

9

11

13

15

17

19

21

23

25

26

10

12

14

16

18

20

22

24

W1 FAN

MACHINE ROOM FAN

HYGIENE LED LIGHT

HYGIENE FAN MOTOR

W1 LED PWM LIGHT

W2 FAN

W3 FAN

YL

GY

BO

RD

BL

PK

RD/YL

YL/BL

WH/BN

PR/WH

BK

BN

PR

WH

WH/RD

BL/RD

SB/BK

BO/WH

BO/BL

YL/BK

WH/BK

BL/WH

W2 LED PWM LIGHT

W3 LED PWM LIGHT

Fan Motor

- 34 -

Fan Motor

Condenser Fan Error (CF)

Check the Fan Motor voltage

Is Fan Motor voltage 8~12V?

Check the fan rotating.

Does fan rotate?

Check the Fan motor.

Rotate fan using hand.

It feel sticky?

Check the Fan Motor voltage

Is Fan Feed Back voltage 0V, 5V?

Reset the unit and

Input Test1 Mode.

(Push the button 1 time)

Go to 3

Change the

Fan motor

Replace

Main PCB

Change the

motor

2

3

4

5

1

TEST MODE 1

Voltage [V]

CON7

19 pin & 21 pin

11.4~12.6V

TEST MODE 1

Voltage [V]

CON7

19 pin & 23 pin

Not 0V, 5V

Explain to customer

Go to 4

6

- 35 -

7-8. Communication Error (CO)

Symptom Check Point

1. CO 1. Check the loose connection

2. Check the Hinge connection

Voltage [V]

CON101

1 pin & 2 pin

11.4~12.6V

CON101

2 pin & 5 pin

4.75 ~ 5.25V

CON101

2 Pin & 3 pin

Not 0V, 5V

CON101

2 pin & 4 pin

Not 0V, 5V

CON5

4 pin & 6 pin

Not 0V, 5V

CON5

4 pin & 8 pin

Not 0V, 5V

SMART

BUZZER

H_SENSOR

DOOR 1 SWITCH

DOOR 2 SWITCH

DOOR 3 SWITCH

DAMPER

HEATER

H_SENSOR

BK

SB

PK

BL/WH

1

2

3

5

7

9

11

13

15

17

19

21

A

5V

GND

A-

B-

5V

GND

SIG

B

23

25

27

29

31

33

4

2

6

8

10

12

14

16

18

20

22

24

26

28

30

32

34

OUTDOOR SENSOR

RD

GY/WH

BL

BO

WH/RD

BN

STEPPING

MOTOR DAMPER

STEPPING

MOTOR DAMPER

A

A-

B-

B

KNOCK ON

SENSOR 1

YL

BK

RD

1

2

3

5V

GND

SIG

KNOCK ON

SENSOR 2

YL

BK

RD

PR

BO/WH

12V

5V

TX

RX

GND

RX

TX

CON101

5432

1

- 36 -

5

4

3

2

1

CON101

CON5

CON101

Communication Error (CO)

Check the voltage.

Is CON101 2 pin & 4 pin

voltage 0V or 5V?

Check the voltage.

Is CON101 1 pin & 2 pin

voltage 12V?

Is CON101 2 pin & 5 pin

Voltage 5V?

Check the voltage.

Is CON101 2 pin & 3 pin

voltage 0V or 5V?

Check the loose connection

Check the voltage.

Is CON5 4 pin & 6 pin

voltage 0V or 5V?

Check the voltage.

Is CON5 4 pin & 8 pin

voltage 0V or 5V?

Change the

Main PCB

Change the

Display

Change the

Main PCB

Change the

Display

Change the

Main PCB

2

3

4

5

6

1

Voltage [V]

CON5

2 pin & 4 pin

11.4~12.6V

CON5

4 pin & 10 pin

4.75 ~ 5.25V

Voltage [V]

CON101

2 pin & 3 pin

Not

0V, 5V

Voltage [V]

CON5

4 pin & 6 pin

Not

0V, 5V

Voltage [V]

CON5

4 pin & 8 pin

Not

0V, 5V

Voltage [V]

CON101

2 pin & 4 pin

Not

0V, 5V

Explain to customer

7

5

4

3

2

1

5

4

3

2

1

- 37 -

7-9. Communication Error (Od)

Symptom Check Point

1. Od 1. Check the loose connection

Voltage [V]

CON102

1 pin & 4 pin

4.75 ~ 5.25V

CON102

2 pin & 4 pin

Not 0V, 5V

CON102

3 Pin & 4 pin

Not 0V, 5V

CON103

1 pin & 4 pin

4.75 ~ 5.25V

CON103

2 pin & 4 pin

Not 0V, 5V

CON103

3 pin & 4 pin

Not 0V, 5V

21

CON102

CON103

4

3

2 1

SMART

BUZZER

H_SENSOR

DOOR 1 SWITCH

DOOR 2 SWITCH

DOOR 3 SWITCH

DAMPER

HEATER

H_SENSOR

BK

SB

PK

BL/WH

1

2

3

5

7

9

11

13

15

17

19

21

A

5V

GND

A-

B-

5V

GND

SIG

B

23

25

27

29

31

33

4

2

6

8

10

12

14

16

18

20

22

24

26

28

30

32

34

OUTDOOR SENSOR

RD

GY/WH

BL

BO

WH/RD

BN

STEPPING

MOTOR DAMPER

STEPPING

MOTOR DAMPER

A

A-

B-

B

KNOCK ON

SENSOR 1

YL

BK

RD

1

2

3

5V

GND

SIG

KNOCK ON

SENSOR 2

YL

BK

RD

PR

BO/WH

12V

5V

TX

RX

GND

RX

TX

1 2 3 4

- 38 -

21

CON103

43

21

CON103

43

21

CON103

43

Communication Error (Od)

Check the voltage.

Is CON103 3 pin & 4 pin

voltage 0V or 5V?

Check the loose connection

Change the

Display

Change the

Display

Change the

WiFi PCB

2

3

4

1

Voltage [V]

CON103

1 pin & 4 pin

4.75 ~ 5.25V

Voltage [V]

CON103

2

nd

pin & 4

th

Not

0V, 5V

Voltage [V]

CON103

3 pin & 4 pin

Not

0V, 5V

Check the loose connection

Change the Display, WiFi PCB

Explain to customer

5

Check the voltage.

Is CON103 1 pin & 4 pin

Voltage 5V?

Check the voltage.

Is CON103 2 pin & 4 pin

voltage 0V or 5V?

- 39 -

7-10. Poor cooling in Wine compartment

Symptom Check Point

1. Poor cooling in Wine

compartment

1. Check the sensor resistance

2. Check the air ow

3. Check the air Temperature

4.Check the Fan motor sticky

4. Check the Fan motor voltage

Duct

Status

Air Flow

Windy

Air Temperature

Cold

TEST MODE 1

Voltage [V]

CON7

3 pin & 5 pin, 4 pin & 6 pin20 pin

& 22 pin

11.4~12.6V

CON7

3 pin & 7 pin, 4 pin & 8 pin20 pin

& 24 pin

Not 0V, 5V

CON202

5 pin & 7 pin , 13 pin & 15 pin,

21 pin & 23 pin

Resistance [Ω]

-22ºF / -30ºC 130k

-13ºF / -25ºC 102k

-4ºF / -20ºC 77k

-13ºF / -25ºC 60k

14ºF / -10ºC 47k

23ºF / -5ºC 37.5k

32ºF / 0ºC 30k

CON7

1

3

5

7

2

4

6

8

9

11

13

15

17

19

21

23

25

26

10

12

14

16

18

20

22

24

W1 FAN

MACHINE ROOM FAN

HYGIENE LED LIGHT

HYGIENE FAN MOTOR

W1 LED PWM LIGHT

W2 FAN

W3 FAN

YL

GY

BO

RD

BL

PK

RD/YL

YL/BL

WH/BN

PR/WH

BK

BN

PR

WH

WH/RD

BL/RD

SB/BK

BO/WH

BO/BL

YL/BK

WH/BK

BL/WH

W2 LED PWM LIGHT

W3 LED PWM LIGHT

CON202

CON7

WH

BK

RD

BO

BL

SB

GY/RD

WH/BK

YL

PK

BO/BL

1

3

5

7

9

11

13

15

17

19

21

23

2

4

6

8

10

12

14

16

18

20

22

24

VCC

GND

VCC

GND

VCC

GND

COM

A

B

B-

A-

1

2

5

6

3.4

3WAY/4WAY

VALVE

W1 SENSOR

W1 DEFROSTING SENSOR

W2 SENSOR

W2 DEFROSTING SENSOR

W3 SENSOR

W3 DEFROSTING SENSOR

W1 LED LIGHT

W2 LED LIGHT

W3 LED LIGHT

- 40 -

Fan Motor

Poor cooling in Refrigerator

compartment

Check the air temperature.

Is it cold?

Check the Fan motor.

Rotate fan using hand.

It feel sticky?

Open the fresh food door and

Check for air ow

Check the sensor resistance.

CON7

5 pin & 7 pin

13 pin & 15 pin

21 pin & 23 pin

Resistance [Ω]

-22ºF / -30ºC 130k

-13ºF / -25ºC 102k

-4ºF / -20ºC 77k

-13ºF / -25ºC 60k

14ºF / -10ºC 47k

23ºF / -5ºC 37.5k

32ºF / 0ºC 30k

Check the F

Fan Motor

Go to 5

Check the

Compressor

and sealed

system

Change the

Fan motor

3

4

5

1

Reset the unit and

Input Test1 Mode.

(Push the button 1 time)

2

- 41 -

Check the Fan Motor voltage

Is Fan Motor voltage 8~12V?

Check the Fan Motor voltage

Is Fan Feed Back voltage 1~5V?

Replace

Main PCB

Change the

motor

6

7

TEST MODE 1

Voltage [V]

CON7

3 pin & 5 pin

4 pin & 6 pin

20 pin & 22 pin

11.4~12.6V

TEST MODE 1 Voltage [V]

CON7

3 pin & 7 pin

4 pin & 8 pin

20 pin & 24 pin

Not 0V, 5V

Explain to customer

8

- 42 -

7-11. Room lamp doesn’t work

Symptom Check Point

1. Freezer room lamp

doesn’t work

1. Check the freezer door switch sticky

2. Check the door S/W resistance

3. Check the LED Lamp

Resistance [Ω]

Door S/W

No magent near

the switch

Innity

Magnet is near the

switch

0

*PWM Control Voltage range

CON7

Voltage [V]

9 pin & 11 pin

5.7~12.6V

10 pin & 12 pin

5.7~12.6V

14 pin & 16 pin

5.7~12.6V

*PWM Control Voltage range

LED Lamp

Voltage [V]

White &Yellow

Closed 0~2V

Open 5.7~12.6V

Door S/W

CON7

LED Lamp

1

3

5

7

2

4

6

8

9

11

13

15

17

19

21

23

25

26

10

12

14

16

18

20

22

24

W1 FAN

MACHINE ROOM FAN

HYGIENE LED LIGHT

HYGIENE FAN MOTOR

W1 LED PWM LIGHT

W2 FAN

W3 FAN

YL

GY

BO

RD

BL

PK

RD/YL

YL/BL

WH/BN

PR/WH

BK

BN

PR

WH

WH/RD

BL/RD

SB/BK

BO/WH

BO/BL

YL/BK

WH/BK

BL/WH

W2 LED PWM LIGHT

W3 LED PWM LIGHT

- 43 -

room lamp doesn’t work

The Switch senses if the door is

open or close.

When the door open, lamp On

When the door Close, lamp Off

Check the PCB Voltage.

Is voltage 5.7 ~ 12.6V?

(While door open)

Change the

PCB

Change the

Door S/W

Change the

LED Lamp

Change the

LED Lamp

Explain to

customer

Change the

Door S/W

3

2

6

41

5

Explain to customer

7

Resistance [Ω]

Door S/W

No magent

near the switch

Innity

Magnet is near

the switch

0

Voltage [V]

CON7

All LED PART

5.7~12.6V

Check the door S/W resistance.

Is it correct compared with table?

CON7

*PWM Control Voltage range

Check the LED Lamp voltage

Is voltage 5.7~12.6V?

LED Lamp

Check the LED Lamp voltage.

Is it 0~2V? (While door closed)

Check the LED Lamp voltage.

Is it 5.7~12.6V? (While door open)

LED Lamp

- 44 -

8. HOW TO DISASSEMBLE AND ASSEMBLE

1. How to Disassemble Door

1) Release the spring on the hinge. Loosen the screw from l to 0



18,24 Wine - Right

1.

2.

2) Unscrew (1.) and remove (2.) the door.

1.

2.

3) Remove the hinges.

1.

2.

4) Assembly is reverse order.

- 45 -

2. How to Disassemble Knock-on Sensor

1) Remove the screws and door panel

2) Remove 3 screws to pull out the Cover machinary room (Wine-Right Hinge)

3) Remove the 2 screws to pull out the Cover,PCB

- 46 -

4) Remove the 2 screws to detach the Link

5) Remove the 2 screws to detach the Holder Bracket

6) Detach the harness from the main PCB

7) Assembly is reverse order.

- 47 -

3. How to Disassemble Top, Cover

1) Disassemble the Door.

2) Remove 2 screws located at Top cover.

3) Pull out the Top cover and separate 3 housings.

Bracket

Rib

PullPull

Left side is xed by this rib.

So the cover need to be pull to disassemble the rib from bracket.

4) Assembly is reverse order.

- 48 -

4. How to replace the Door Switch/SDS PCB/Temperature sensor?

1) First, Reassemble the Top,Cover . (With reference Top,cover SVC)

2) Pull out the Top cover and separate 3 housings.

①

Door switch

②

Temperature

sensor

③

SDS PCB

①

Door switch

②

Temperature

sensor

No Humidity Sensor in

Wine Model

③

SDS PCB

3) Pull out the Top,Cover and replace the defect part.

(If the Door switch needs to be replaced, you can replace the

①

.

- 49 -

5. How to remove the Cover Machinery Room

1) Open the door

2) Remove the 1 Screw located at under the Hinge

3) Remove 2 Screws located at opposite the hinge.

4) Pull out the cover machinery room.

- 50 -

6. How to Sliding out Machinery room ( 1 / 4 )

Preparation for Sealed System Repair SVC(Compressor, Condenser)

※

GR-1137GPNM, GR-3137GPNM Machine rooms are Same structure and SVC order is

same. Refer to exploded View page (3/4).

1) Open the door and remove the Cover. 2) Loosen the marked Screws. (5 Points)

Recommend to use short tip

3) Remove 1) 3Way valve, 2)PCB Connector housing. 4) Lift slightly up on condenser to separate

5) Rotate Condenser to the side and move it. If SVC the

Condenser, Work in current state.

6) Remove the Guide fan housing and take it out from the

Refrigerator.

If SVC the Guide Fan, Work in current state. And Refer to the

Page (4/4)

Caution :

When handling the PIpe, be careful with the Pipe Crack.

1)2)

- 51 -

6. How to Sliding out Machinery room ( 2 / 4 )

Preparation for Sealed System Repair SVC(Compressor, Condenser)

7) Slide out the machine room SVC Slide by putting the condenser sideways.

When sliding out the machine room, be careful not to damage the Suction Joint(Back of the Compressor).

8) Pay attention to each position of the Compressor and perform sealed system repair

Refer to Sealed System Repair Page.

9) Assembly is reverse order

Do not miss the Tube Assembly drain to be in position again.

If not, it cause a risk of leaks in customer’s furniture and oor.

※

GR-1137GPNM, GR-3137GPNM Machine rooms are Same structure.

Refer to next page exploded View.

Processing(Charging)

Suction

Discharge

- 52 -

6. How to Sliding out Machinery room ( 3 / 4 )

Please refer to the below exploded view of the Cycle Parts.

GR-1137GPNM (18W)

GR-3137GPNM (24W)

▪ Valve Assembly,Pipe

-AJU74012401

▪ Valve Assembly,Pipe

-AJU75332501

▪ Tube Assembly, Drain

- 5251JA3004E

▪ Pipe,Joint

-MGE64934801

▪ Tube Assembly, Drain

-5251JA3004E

▪ Pipe, Joint

-MGE64934802

- 53 -

6. How to Sliding out Machinery room ( 4 / 4 )

Guide Fan Assembly SVC With Condenser.

- SVC part : Guide Fan , Fan Assembly, Motor DC, Condenser

Refer to Exploded view in Guide Fan Assembly.

1) Condenser

- Disassemble the Condenser. There is no Screw in Condenser.

- Move to Condenser beside to disassemble. Refer to Sliding out Machinery Room page.

2) Motor DC, Fan Assembly

- Disassemble the Guide fan Assembly from the Refrigerator.

- Loosen the Screw Customized 4 points.

- If Need to SVC Fan Assembly, Just pull out the Fan and Change the part.

- If Need to SVC Motor DC, Loosen the Screw Tapping from Guide Fan and Change.

3) Disassemble the Guide fan Assembly from the Refrigerator.

- Reassemble in reverse order of disassembly.

- Do not miss the Damper Rubber Located on Screw Customized.

Brazing point

- 54 -

7. How to SVC the Wi-Fi module?

1) Open the door 2) Remove the Screws located at Cover front.

3) Remove the Cover machinery room. 4) Remove the WiFi module from the Cover front.

- Remove the 1 Screw

5) Separate the WiFi module housing from

the Main PCB housing.

6) Assembly is reverse order.

- 55 -

8. How to SVC the Power Cord?

1) Remove screws on Cover machinery Back.

2) Remove the earth screw and power cord screw.

earth screw

Power cord screw

3) Separate the Power Cord housing on the top.

4) Assembly is reverse order.

- 56 -

9. How to SVC the Main PCB? (1/2)

1) Open the door

2) Remove the Cover machinery and Cover front.

3) Remove the earth screw that is located at the left side.

Main PCB earth screw

- 57 -

9. How to SVC the Main PCB? (2/2)

4) Separate the Main PCB housing from the Supporter Housing that is located at bottom of Case. (Total 9 housings)

5) Remove the 2 screws.

6) Move Main PCB to the right and pull out the Main PCB.

④

①

②

⑤

③

⑥

⑦ ⑧

⑨

- 58 -

10. How to Disassemble Control Panel

1) Open the Door 3) Pull out the Top Duct

2) Remove 2 caps (24inch-3caps) and screws located

at Top Duct.

4) Pull out the Control Panel and separate 2 housings.

5) Assembly is reverse order.

※

If you have a problem to remove top duct screws by Guide Rail.

You need to remove the both rail on the top.

Cap

- 59 -

11. How to Disassemble Shelf

1) Pull the Shelf to the end

2) Raise up and pull the Shelf by this direction

3) Assembly is reverse order.

①

Raise it up

②

Pull in this direction

- 60 -

12. How to Disassemble Slide Rail

1) Remove the Shelf

2) Remove 1 Screw

3) Pull Slide Rail to the end

4) Raise it up and pull Slide Rail by this direction

5) Assembly is reverse order.

②

Pull in this direction

①

Raise it up

- 61 -

13. How to Disassemble Holder Rail

1) Remove the Shelf

2) Remove Slide Rail

3) Remove 2 Screw

4) Raise it up and pull Slide Rail by this direction

5) Remove 2 Screw completely

6) Assembly is reverse order.

②

Pull in this direction

①

Raise it up

- 62 -

14. How to Disassemble Top Duct

1) Remove 3 Cap Covers (18inch - 2 Cap Covers)

Location of Cap covers and Screws Location of Cap covers and Screws

2) Remove 3 (or 2) Screws

3) Pull down the Top Duct and Separate the Housing and Remove the Top Duct

4) Assembly is reverse order.

- 63 -

15. How to Disassemble Grille Fan

1) Remove Shelf

2) Remove Slide Rail and Holder Rail

3) Remove Control Panel and Top Duct

(When disassembling the Top Grille Fan)

4) Remove 2 screws

5) Pull Upper side of the Grille Fan

6) Separate the Housing and Disassemble the Grille Fan

7) Assembly is reverse order.

(Middle and Lower Grille Fan)(Top Grille Fan)

- 64 -

16. How to Disassemble Multi Duct

1) Remove Shelf

2) Remove Slide Rail and Holder Rail

3) Remove Control Panel and Top Duct

(When disassembling the Top Grille Fan)

4) Remove Grille Fan

5) Remove 2 screws

6) Pull Upper side of the Multi Duct and Disassemble the Multi Duct

7) Assembly is reverse order.

- 65 -

17. How to Disassemble Defrost sensor

1) Remove Shelf

2) Remove Slide Rail and Holder Rail

3) Remove Control Panel and Top Duct

(When disassembling the Top Grille Fan)

4) Remove Grille Fan and Multi Duct

5) Separate the Housing

6) Pull the sensor backward

7) Assembly is reverse order.

※

When assembling the sensor, assemble the tip of the sensor to the edge of the white paint.

the edge of the

white paint

sensor

- 66 -

18. How to Disassemble Barrier

1) Remove Shelf

2) Remove Slide Rail and Holder Rail

3) Remove Control Panel and Top Duct

(When disassembling the Top Grille Fan)

4) Remove Lower Grille Fan and Upper Multi Duct

(Based on the Barrier you want to disassemble)

5) Remove 2 screws

6) Separate the Housing and Push 2 Rack

7) Pull Barrier and Disassemble the Barrier

8) Assembly is reverse order.

- 67 -

9. Sealed System Repair Method of Refrigerator with R600a Refrigerant

9-1.Outline

9-1-1. Safety warnings and cautions before Sealed System Repair

Keep away ame.

There is a risk of re.

Do not store inammable

ether,benzene,alcohol,chemicals,LP

gas,etc.in the refrigerator

There is a risk of

explosion or re.

9-1-2. Checkpoints before Sealed System Repair

Open the Cover ASM,Back-M/C of refrigerator and check the type of refrigerant indicated on a compressor

before starting work.A yellow label is adhered to the compressor for the refrigerator using R600a as refrigerant.

9-1-3. Features of R600a Refrigerant

·

Non-polar natural gas refrigerant (CH(CH3)3)

·

Since R600a is same series as butane gas,there is danger of re when discharged into air at appropriate

concentration (extreme handling is required for sealed system repair of cycle).

Explosion concentration:1.8%~8.4%/Vol.

Burning temperature:494 ° C

9-1-4. Features of R600a Refrigerator

·

With refrigerant quantity of 60%or so for the refrigerator using R134a as refrigerant

·

Large vacuum level at suction pressure (at low pressure side)

·

COMP capacity of the refrigerator using R600a as refrigerant is large by 1.7 times than that of the refrigerator using R134a.

·

Labels as in Figure are displayed at the compressor of a refrigerant for R600a and the back plate of refrigerator.

Be careful about the ventilation during the repair of refrigerator cycle.

R600a refrigerant is inammable,so make sure to remove heat source or ame during the

work.(Smoking is strictly prohibited.)

- 68 -

9-1-5. Location and Environment for Sealed System Repair

·

Check that drafting and air ventilation are well done at a working area and perform work after making drafting and

air ventilation smooth (use refrigerant return bag indoors).

·

Check that there are re appliances or heating source around the working area and then remove them before work.

·

Since R600a refrigerant is very inammable,they should not be discharged indoors.

·

Be sure to follow sealed system repair SVC procedures during work.

9-1-6. Sealed System Repair Work Tool

·

R600a refrigerant

·

Bombe

·

Pinch Plier

·

Hoses

·

Refrigerant Return Bag

·

Vacuum Pump

·LokRing Tool

·

Charging Tube

·

Leakage Tester

·

Drier

- 69 -

9-2. Sealed System Repair SVC Method

For the sealed system repair of R600a type of refrigerator,perform work according to following SVC method.

9-2-1. Return of Refrigerator Refrigerant

Required equipment:Pinch pliers,refrigerant discharging hose,refrigerant return bag

• Take power cords out and remove power between 6sec through 12sec after powering ON to open all both sides of 3way

valve.

• Leave doors of a refrigerator so that they are not closed.

• Connect pinch pliers with a refrigerant discharging hose.

• Place the outlet of a refrigerant discharging hose outside.

(Remove re appliances or heating sources near a refrigerant discharging hose.)

• Always use a refrigerant return bag for working at the contained space.

• Bore the charging pipe of a compressor with pinch pliers.

(Remove re appliances or heating sources near a refrigerator.)

• Perform refrigerant discharge for more than 7 minutes.

- 70 -

9-2-2. Return of Remained Refrigerant

Required equipment:Pinch pliers,hose for refrigerant recovery,vacuum pump

• If refrigerant return time of 7 minutes has passed,connect a vacuum pump at the ends of a refrigerant return hose outdoor.

(Vacuum pump must operate outdoor.)

• Operate a vacuum pump in order to return refrigerant remained in the pipe.

• Vacuum working time should be for more than 10 minutes.

9-2-3. LokRing Repair Step

• Required equipment: LokRing Tool

• Remove pinch pliers if remaining refrigerant return is completed.

• Cut the front part of a process pipe with a cutter.(Check that remaining refrigerant comes out.)

• Perform LokRing SVC work such as replacement of compressor and dryer,or repair of leakage part.

- 71 -

9-2-4. Charging Tube Connection Step

Required equipment:Charging tube,LokRing Tool

• Remove a charging pipe to recharge R600a refrigerant after completing work,and then connect a charging tube with LokRing.

Processing(Charging)

Discharge

Suction

9-2-5. Vacuum Air Removal

Required equipment:Vacuum pump

• Connect a vacuum pump to a charging tube to perform vacuum cycle.

• Vacuum work should be performed for an hour.(If vacuum time is short,normal cooling performance may not be exerted due to

failure of cooling cycle.)

- 72 -

9-2-6. Refrigerant Charging

Required equipment:Bombe,R600a refrigerant (75g)

• First remove re appliances and heating source for performing work when charging scaled refrigerant.(Do not spray

refrigerant indoor.)

• Measure the accurate quantity (75g)of refrigerant to charge it into a Bombe.

• Make the Bomber as vacuum status to charge refrigerant. (If there is air or moisture in a Bombe,it may give effect on

performance of a cooling cycle.)

• Please manage refrigerant quantity as 75g11.Different from R134a,R600a gives much effect on cooling performance

depending on change of refrigerant quantity.

♦ GR-1137GPNM Model uses refrigerant 42g

♦ GR-3137GPNM Model uses refrigerant 44g

Refrigerant quantity =Weight after charging -Weight before charging (weight of vacuumed Bombe)

• Connect Bombe with a charging tube to charge refrigerant.

• Turn on power of refrigerator to operate a compressor.

• Measure Bombe weight after 5 through 10 minutes to check remained refrigerant quantity to complete charging of refrigerant.

(After charging refrigerant,never perform welding work or work using re appliances.)

9-2-7. Leak Inspection and Cycle Check

Required equipment:Leakage checking machine (foam and leakage inspection machine)

• Check f

or leakage by using form or a leakage inspection machine at the worked part if charging of refrigerant is completed.

• Check for leakage at the low pressure part with the compressor stopped,and check at the high pressure part with the

compressor being operating.

• If leakage is detected,proceed to repair according to repair process again starting from“2-1. Return of Refrigerator Refrigerant

”.(Never perform welding work or work using re appliances.)

• Check that h

eat remains at a discharge pipe or condenser with the hands if leakage check is completed.If heat

remains,the

cooling cycle is normal.(Take care since a discharge pipe may be hot.)

- 73 -

9-2-8.Failure Checking Procedures

- 98 -

- 74 -

10. EXPLODED VIEW

206A

248A

202A

203A

214A

213A

282A

283A

236A

236B

214A

500D

201A

500E

202A

1. Door Part

#EV#

- 75 -

180E

181B

180F

192A

181D

180B

185A

190A

180D

302A

180A

610F

406G

500A

192A

#EV#

2. Case Part

Parts without a location number can be supplied as assembled unit

- SKSCW181RP : 2 Evaporator

- SKSCW241RP : 3 Evaporator

- 76 -

122D

121A

122E

122A

120A

181F

122B

120B

181F

125A

610G

610H

181E

#EV#

3. Perform Part

Parts without a location number can be supplied as assembled unit

- Model : SKSCW181RP

- 77 -

3. Perform Part

Parts without a location number can be supplied as assembled unit

- Model : SKSCW241RP

122D

121A

122E

122A

120A

181F

122B

122C

120C

120B

181F

125A

610G

610H

181E

#EV#

- 78 -

4. Movable Part

- Parts without a location number can be supplied as assembled unit

- Model : SKSCW181RP

147B

134A

144A

147A

144B

144A

144B

147A

134A

#EV#

- 79 -

4. Movable Part

- Parts without a location number can be supplied as assembled unit

- Model : SKSCW241RP

147B

144A

147A

144B

147A

144B

147B

144A

134A

#EV#

- 80 -

5. Machine Room Part

501B

501G

501F

501C

411A

619A

619B

174C

174A

173B

174B

175A

500C

174D

103A

319A

310B

308A

403B

308C

308B

104B

175A

104A

317A

104B

105A

171A

303D

314A

310A

314A

307A

171B

104A

301A

103B

173A

501H

194A

306A

#EV#

- 81 -

6. Installation Part

703A

704A

705A

180C

702A

702B

702C

700A

701A

709A

180G

706A

708A

710A

#EV#

LG Electronics SKSWK245RS

Product's Documents

User Manual

Specifications

LG Electronics SKSWK245RS Questions and Answers

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