LG SKSWK245LS, SKSWK245RS Owner’s Manual

CONFIDENTIAL

SERVICE MANUAL

BUILT IN WINE CELLAR

MODEL : SKSCW181RP

SKSCW241RP

www.signaturekitchensuite.com

MFL67262420

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

Copyright © 2018 - 2019 SIGNATURE KITCHEN SUITE. All rights reserved. Only training and service purposes.

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

- 2 -	Copyright © 2018-2019 SIGNATURE KITCHEN SUITE.
	All rights reserved. Only training and service purposes.

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.

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2. PRODUCT STANDARDS

		Model Name	SKSCW181RP	SKSCW241RP
	Model Name
	Effective inner capacity		274L (9.7 Cu.ft)	385L (13.6 Cu.ft)
	Outer dimension (W x D x H)		"445 × 607× 2121 mm	"603 × 607× 2121 mm
			(17 1/2 x 23 7/8 x 83 1/2 inch)"	(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)
		Upper-Room	Micom Control	Micom Control
	Temperature
		Middle-Room	-	Micom Control
	control
		Lower-Room	Micom Control	Micom Control
		Compressor driving method	Linear	Linear
		Evaporator	Rollbond Type	Rollbond Type
		Condenser	Micro Channel Condenser (Al)	Micro Channel Condenser (Al)
	Cycle	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
		Heater	AC 115V / 33W * 2EA	AC 115V / 33W * 3EA
		Overload protective device	4MPS41F9-01	4MPS41F9-01
		Cold Fan motor	DC 12V	DC 12V
	"Electrical parts	Fan motor for cooling	DC 12V	DC 12V
	standard"	condenser
		Inside lamp	15.4W	28.2W
		Main Fuse	125V / 10A	125V / 10A
		Valve	DC 12V	DC 12V

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3. CIRCUIT DIAGRAM

CIRCUIT DIAGRAM

24” : W1(Upper)/W2(Middle)/W3(Lower)							1
18” : W1(Upper)/W2(Lower)								BK				SMART
POWER							3	SB	5V			BUZZER
CORD							5
				WH			7		H_SENSOR			H_SENSOR
									GND
				BK			9	BL/WH
		FUSE		CON1/			11				DOOR 1 SWITCH
							13	BL/WH
				CON1_1
							15				DOOR 2 SWITCH
							17
		HALL IC		2			19				DOOR 3 SWITCH
				4			21					DAMPER
				6			23
ICE MAKER MOTOR				8			25		A			HEATER
				10			27
									A-	STEPPING
ICE MAKER SENSOR				12			29
				14			31		B-	MOTOR DAMPER
ICE MAKER MOTOR ON-OFF SWITCH				16			33		B
ICE MAKER MOTOR TEST SWITCH				18			2	RD	12V					5V
				20			4	GY/WH	GND					TX
DISPENSER SWITCH				22			6	BL	RX					RX
				21
				1			8	BO	TX					GND
				3			10	WH/RD	5V
				5			12	BN			OUTDOOR SENSOR
				7			14	BN		5V
				9			16	PK			1	YL	KNOCK ON
										GND
				11			18	BO/WH		SIG	2	BK	SENSOR 1
DEW HEATER				13			20	PR			3	RD
WATER PIPE HEATER				15			22			5V	1	YL	KNOCK ON
				17			24			GND	2	BK
				19			26		A	SIG	3	RD	SENSOR 2
							28
									A-	STEPPING
							30
				1	WH				B-
W1 SENSOR							32		B	MOTOR DAMPER
				3	WH		34
W1 DEFROSTING SENSOR				5	BO/BL					LINEAR
				7	BO/BL
										COMPRESSOR
W2 SENSOR				9	BK
				11	BK		1	BL
W2 DEFROSTING SENSOR				13	RD
				15	RD		2
							3	RD
W3 SENSOR				17	BO	OVERLOAD				COMPRESSOR				OVERLOAD
				19	BO		4
						PROTECTION	5				GROUNDING			PROTECTION
W3 DEFROSTING SENSOR				21	BL	DEVICE								DEVICE
				23	BL		6
		VCC					7	BK
				2
W1 LED LIGHT		GND
				4
		VCC
				6
W2 LED LIGHT		GND
				8
		VCC
				10
W3 LED LIGHT		GND					1	YL
				12
	1	COM		14	SB		3	GY				W1 FAN
	2		A	16	GY/RD		5	BO
	5		B	18	YL		7	RD
			A-				9	PK				W1 LED PWM LIGHT
3WAY/4WAY	6			20 WH/BK
			B-				11	RD/YL
VALVE	3.4			22	PK		13					HYGIENE FAN MOTOR
				24			15
							17	BL
D-N : Defrosting Heater- N			D-N				19	YL/BL				MACHINE ROOM FAN
				1			21	WH/BN
							23	PR/WH
				2			25					HYGIENE LED LIGHT
	W2			3			26
FUSE-M	DEFROSTING	FUSE-M		4			2	BK
	HEATER
FUSE-M	W3	FUSE-M		5			4	BN				W2 FAN
	DEFROSTING			6			6	WH/RD
	HEATER			7			8	WH
							10 BL/RD					W2 LED PWM LIGHT
	W1			1	PK		12	PR
FUSE-M	DEFROSTING	FUSE-M		2			14	SB/BK				W3 LED PWM LIGHT
	HEATER						16	BO/WH
	W2 DEFROSTING HEATER			3			18	BO/BL
				4			20	YL/BK				W3 FAN
				5	BN		22	WH/BK
	W3 DEFROSTING HEATER			6	WH		24	BL/WH
				7
	W1 DEFROSTING HEATER			8	BK
				9
	GROUNDING			10
				11	GR/YL

MBM66335905

9.0 SEC

8.0 SEC

10.0 SEC

11.0 SEC

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3. CIRCUIT DIAGRAM

		SCHÉMA DE CIRCUIT														MBM66335905
24” : W1(supérieur)/W2(Moyen)/W3(*OG¨SJFVS)								1	BK				ALARME
18” : W1(supérieur)/W2(*OG¨SJFVS) FICHE		RÉACTEUR						3	SB	5V			INTELLIGENTE
SECTEUR	NEUTRE				WH			5
								7		Capteur d’humidité CAPTEUR
		SOUS			BK			9		GND			D’HUMIDITÉ
					CON1/			11 BL/WH				INTERRUPTEUR PORTE 1
		TENSION FUSIBLE						13	BL/WH
					CON1_1			15				INTERRUPTEUR PORTE 2
CIRCUIT INTÉGRÉ EFFET HALL								17
					2			19				INTERRUPTEUR PORTE 3
					4			21					CHAUFFAGE
					6			23
MOTEUR DE L’APPAREIL À GLAÇONS					8			25		A			DU REGISTRE			9.0 SEC
					10			27
CAPTEUR DE L’APPAREIL À GLAÇONS					12			29		A-	REGISTRE DU					8.0 SEC
					14			31		B-	MOTEUR PAS À PAS
INTERRUPTEUR MARCHE/ARRÊT MOTEUR DE L’APPAREIL À GLAÇONS					16			33		B						10.0 SEC
INTERRUPTEUR DE TEST MOTEUR DE L’APPAREIL À GLAÇONS					18			2	RD	12V			AFFICHER		5V	11.0 SEC
INTERRUPTEUR DU DISTRIBUTEUR					20			4	GY/WH	GND					TX
					22			6	BL	RX					RX
					21			8	BO	TX					GND
					1
					3			10	WH/RD	5V
					5			12	BN			CAPTEUR EXTÉRIEUR
					7			14	BN		5V
					9			16	PK			1	YL	TAPER SUR
											GND
					11			18	BO/WH		SIG	2	BK	LE CAPTEUR 1
CHAUFFAGE DE LA ROSÉE					13			20	PR			3	RD
CHAUFFAGE DE LA CONDUITE D’EAU					15			22			5V	1	YL	TAPER SUR
					17			24			GND	2	BK
					19			26		A	SIG	3	RD	LE CAPTEUR 2
								28
										A-	REGISTRE DU
								30
					1					B-
	CAPTEUR W1					WH		32		B	MOTEUR PAS À PAS
					3	WH		34
CAPTEUR DE DÉGIVRAGE W1					5	BO/BL
					7	BO/BL					COMPRESSEUR
	CAPTEUR W2				9	BK					LINÉAIRE
					11	BK
CAPTEUR DE DÉGIVRAGE W2					13	RD		1	BL
					15	RD
								2
	CAPTEUR W3				17	BO									DISPOSITIF DE
							DISPOSITIF DE	3	RD
					19	BO
							PROTECTION	4				BASES DU			PROTECTION
CAPTEUR DE DÉGIVRAGE W3					21	BL	CONTRE LES								CONTRE LES
								5			COMPRESSEUR
				VCC	23	BL	SURCHARGES								SURCHARGES
					2			6
ÉCLAIRAGE LED W1				GND				7	BK
					4
				VCC
ÉCLAIRAGE LED W2					6
				GND
					8
				VCC
ÉCLAIRAGE LED W3					10
				GND				1	YL
					12
		1		COM	14	SB		3	GY				VENTILATEUR W1
		2		A	16	GY/RD		5	BO
		5		B	18	YL		7	RD
				A-				9	PK				LAMPE LED PWM W1
SOUPAPE		6			20 WH/BK
				B-				11	RD/YL
3 VOIES/4 VOIES		3.4			22	PK		13					MOTEUR VENTILATEUR HYGIÈNE
					24			15
								17	BL
D-N : CHAUFFAGE DE DÉGIVRAGE- N D-N								19	YL/BL				VENTILATEUR LOCAL TECHNIQUE
					1			21	WH/BN
								23	PR/WH
					2			25					LAMPE LED HYGIÈNE
					3			26
FUSIBLE-M		DÉGIVRAGECHAUFFAGEW2DE	FUSIBLE-M		4			2	BK				VENTILATEUR W2
		DÉGIVRAGECHAUFFAGEW3DE			5			4	BN
FUSIBLE-M			FUSIBLE-M		6			6	WH/RD
					7			8	WH
								10	BL/RD				LAMPE LED PWM W2
					1	PK		12	PR
		CHAUFFAGE DE						14	SB/BK				LAMPE LED PWM W3
					2
FUSIBLE-M		DÉGIVRAGE W1	FUSIBLE-M					16	BO/WH
					3			18	BO/BL
		CHAUFFAGE DE DÉGIVRAGE W2			4			20	YL/BK				VENTILATEUR W3
					5	BN		22	WH/BK
		CHAUFFAGE DE DÉGIVRAGE W3			6	WH		24	BL/WH
					7
		CHAUFFAGE DE DÉGIVRAGE W1			8	BK
					9
		MISE À TERRE			10
					11	GR/YL

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4. SPECIFICATIONS

● SPECIFICATIONS

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

	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

● DIMENSIONS

		(B)
	(A)	(C)
		(D)
				(A)	(A)
	(G)		(G)
	min.		min.
	(H)		(H)
	max.		max.
				(E)	(F)
				DOOR OPEN 90˚	DOOR OPEN 115˚
	FRONT VIEW	SIDE VIEW		TOP VIEWS
	Description			SKSCW181RP	SKSCW241RP
Width		Width (A)		17 1/2"(445mm)	23 3/4"(603mm)
	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)
Depth	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)

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● Parts

MODEL : SKSCW181RP

Control Panel

LED Interior

Lighting

Storage Rack

Zone Divider

LED Interior

Lighting

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● Parts

MODEL : SKSCW241RP

Control Panel

LED Interior

Lighting

Zone Divider

LED Interior

Lighting

Storage Rack

Zone Divider

LED Interior

Lighting

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5. MICOM FUNCTION

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

-MODEL : SKSCW181RP

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	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
Temper
ature

- 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/
Middle
Lower/	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
Set
Temper
ature

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●Description of Function

-MODEL : SKSCW181RP

				

 

- Model : SKSCW241RP

				

 

 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.

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6. TROUBLE SHOOTING

1. COMP Bad Operation

Open the PCBA Cover

Check the LED blinking times		If the Comp is normal,
(Refer to the next chapter for LED blinking and actions.)		the LED does not blink.

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2.Simple Check Flow Chart

-Not Cooling (LED Blinking)

								Test Mode
	LED8 Blinks			Reset
									1 Input
								Test Mode
	LED7 Blinks			Reset
									1 Input
								Test Mode
	LED1 Blinks			Reset
									1 Input
								Test Mode
	LED4 Blinks			Reset
									1 Input
								Test Mode
	LED5 Blinks			Reset
									1 Input
								Test Mode
	LED2 Blinks			Reset
									1 Input
								Test Mode
	LED3 Blinks			Reset
									1 Input
			N							N
					PCBA
	Replace PCB				Output
					> 60V?
					Y
					Check C
					omp.

About 5min

About 5min

About 5min

About 5min

About 5min

About 5min

About 5min

Harness

wiring?

Y

Repair Harness

Test Mode

LED6 Blinks

Reset

About 5min

1 Input

N

PCBA

Replace PCB

Output

> 60V

LED

Trip Information

Y

1

Current/Voltage Sensing Error

Check Comp.

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

- Not Cooling (LED No Blinking)

LED8 Blinks

LED7 Blinks

LED1 Blinks

LED4 Blinks

LED5 Blinks

LED2 Blinks

LED3 Blinks

N Comp.

Action?

Y

Cycle Cycle leakage

LED6 Blinks

N Comp.

Action?

Y

Check Cycle leakage

					Comp.	N	PCBA
Test Mode
			About 5min				Output
1 Input					Action?
							> 60V

Replace PCB

Replace PCB

Replace PCB

Replace PCB

Comp. N

Action?

Y

Check Comp.

Check

Cycle leakage

N

Replace PCB

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

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

Blink OFF Blink OFF

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

→Restart every 30 seconds after compressor off.

				Test Mode
LED 1 Blinks		Reset				About 5min		LED 1 Blinks		Replace PCB
				1 Input

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

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

Blink Blink OFF Blink Blink OFF

→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.

Check Stroke or

Check

LED Blinking 2 times

Repair Harness

the Protection Logic

(Stroke Trip)

N

Y

Y

Check

Do not operate

Harness connection

Comp.?

N

Y

Compressor is operate

intermittently

Check the	Y	Check Comp.
leakage and cycle
N		Y	N
	Stroke Trip
Recheck		Reset
	occur?
		Replace
		Compressor

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

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

Blink Blink Blink

OFF

Blink Blink Blink

OFF

→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.

			Check
Check			No Connect or
								Repair Harness
the Protection Logic			LED blinking 3 times
			(No Connect Trip)			Y		N
			Do not operate					Check
							Harness connection
			Comp.?
				N						Y

	Y	Check Comp.
Replace PCB
N		Y	N
	No Connect Trip
Recheck		Reset
	occur?
		Replace
		Compressor

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

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

Blink Blink Blink Blink OFF Blink Blink Blink Blink OFF

→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.

				Test Mode
LED 4 Blinks		Reset				About 5min		LED 4 Blinks		Replace PCB
				1 Input

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

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

Blink Blink Blink Blink Blink OFF

→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.

				Check the L/Piston or
	Check
				LED blinking 5 times
	the Protection Logic
				(Locked Piston Trip)

Do not operate

Comp.?

									Replace
		Reset
									Compressor
									N
Do not operate						Y
							Clogging the Cycle?
		Comp.?
			N						Y
									Repair
		Recheck
									Sealed system

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

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

Blink Blink Blink Blink Blink Blink OFF

→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.

Check the Current or

Y

Check

Compressor is operate

LED blinking 6 times

the Protection Logic

intermittently

(Current Trip)

N

N

Check the

Y

Replace PCB

N

PCB output

Replace

Check the

Compressor

Compressor failure

N

Current trip

Y

Recheck

Reset

occur?

Y

N

Y

Check the

Do not operate

Clogging the Cycle?

leakage and cycle

Comp.?

Y

N

Repair

Replace

Sealed system

Compressor

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

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

Blink Blink Blink Blink Blink Blink Blink OFF

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

→Cause : IPM Short and failure

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

				Test Mode
LED 7 Blinks		Reset				About 5min		LED 7 Blinks		Replace PCB
				1 Input

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

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

Blink Blink Blink Blink Blink Blink Blink Blink OFF

→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)

				Test Mode
LED 8 Blinks		Reset				About 5min		LED 8 Blinks		Replace PCB
				1 Input

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4.Check the PCB Output

→Check output voltage from PCB to Compressor.

IPM Output check

Multi

Tester

SAMPLE

SAMPLE

→ 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)

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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)

Y

Check the

Y

Check

Y

Power

Resistance

off

the Harness

(point A)

N

N

Harness Connection

OK

Check

N

Check

N

N

Check

the Resistance

the Resistance

Comp.

(point B)

(point D)

terminal

Y

Y

Y

A~B

B~D

Replace

Harness

Connection error

Connection error

Compressor

failure

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5.Check the Compressor & Harness

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

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

Point D

Multi	Multi
Tester	Tester
Point A	Point B	Sa	Po
	Sa: Save
	Po: Power
	Co: Common
			Co

Multi

Tester

Earth

Check insulation break-down

Multi

Tester

The resistance can differ by fewdepending on the surrounding temperature or operating condition.

Mode	Resistance
Power( )	14	~17
Save( )	20	~23

FMA102NAMA

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7. TROUBLE SHOOTING WITH ERROR DISPLAY

7-1. Error Code

			18 Wine	24 Wine	Failure Details
	1	Abnormal Internal	ES1/ES2	ES1/ES2/ES3	Internal Temp. Sensor Short or Open
		Temp. Sensor			Circuit
	2	Abnormal Defrost	Ed1/Ed2	Ed1/Ed2/Ed3	Defrost Sensor Short or Open Circuit
		Sensor
	3	Abnormal Ambient	E rt	E rt	Ambient Sensor Short or Open
		Sensor			Circuit
	4	Abnormal Wi-Fi	E Od	E Od	Communication Short or Open Circuit
					(Display ↔ Wi-Fi Module)
	5	Abnormal Internal Fan	EF1/EF2	EF1/EF2/EF3	There No Signal Of BLDC Fan Motor
		Motor
					More Then 65 Seconds In Operation
		Abnormal Condenser			Of Fan Motor (BLDC Motor
	6		E CF	E CF	Connection, Drive IC Or TR Defect)
		Fan Motor
	7	Abnormal	E CO	E CO	Communication Short ior Open
		Communication			Circuit (Display ↔ Main PCB)

18 Wine

24 Wine

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