LG SKSWK245LS Owner's 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

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

supérieur*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

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