DAEWOO FRSU20DAI User Manual

S/M No: FRSU20IA01

Refrigerator

Caution

:In this Manual, some parts can be changed for improving, their performance without notice in the parts list. So, if you need the latest parts information,please refer to PPL(Parts Price List) in Service Information Center

July . 2005

C O N T E N T S
1. WARNINGS AND PRECAUTIONS FOR SAFETY --------------------------------------------	2
2. EXTERNAN VIEW
2-1. External Size -----------------------------------------------------------------------------------------	3
2-2. Name of Each Parts ---------------------------------------------------------------------------------	6
3. SPECIFICATION ---------------------------------------------------------------------------------------	11
4. OPERATION AND FUNCTIONS -------------------------------------------------------------------	14
5. CIRCUIT OPERATION
5-1. Power Circuit Diagram -----------------------------------------------------------------------------	34
5-2. Function of Each Sensor --------------------------------------------------------------------------	35
5-3. Relay Function ---------------------------------------------------------------------------------------	37
5-4. Fan Function -----------------------------------------------------------------------------------------	39
6. DIAGRAM
6-1. Wiring Diagram ---------------------------------------------------------------------------------------	40
6-2. Circuit Diagram of Main PCB ---------------------------------------------------------------------	42
7. COMPONENT LOCATE VIEW ---------------------------------------------------------------------	46
8. HOW TO CHECK EACH PARTS
8-1. Hose Ice Maker Tube -------------------------------------------------------------------------------	48
8-2. Bracket Geared Motor ------------------------------------------------------------------------------	49
8-3. Dispenser Micro Switch ----------------------------------------------------------------------------	50
8-4. Dispenser Solenoid Valve -------------------------------------------------------------------------	51
8-5. Main PCB ----------------------------------------------------------------------------------------------	52
8-6. Ice Maker ----------------------------------------------------------------------------------------------	53
9. TROUBLE DIAGNOSIS
9-1. Power Failure -----------------------------------------------------------------------------------------	56
9-2. Freezer Compartment ------------------------------------------------------------------------------	57
9-3. Refrigerator Compartment -------------------------------------------------------------------------	63
9-4. Operation Noise of Refrigerator ------------------------------------------------------------------	67
9-5. Door -----------------------------------------------------------------------------------------------------	74
10. COOLING CYCLE HEAVY REPAIR
10-1. Summary of Heavy Repair -----------------------------------------------------------------------	75
10-2. Precaution during Heavy Repair ---------------------------------------------------------------	76
10-3. Practical Work for Heavy Repair ---------------------------------------------------------------	77
10-4. Standard Regulations for Heavy Repair ------------------------------------------------------	79
10-5. Brazing Reference Drawing ---------------------------------------------------------------------	80
11. INSTALLATION GUIDE
11-1. Installation Preparation ---------------------------------------------------------------------------	81
11-2. If the Refrigerator can not enter the Door ----------------------------------------------------	82
11-3. Refrigerator Leveling & Door Adjustment ----------------------------------------------------	84
11-4. Water Line Installation ----------------------------------------------------------------------------	85
11-5. Dispenser Water Flow ----------------------------------------------------------------------------	87
12. EXPLODED VIEW & PARTS LIST
12-1. FRS(N)-U20IA --------------------------------------------------------------------------------------	88
12-2. FRS(N)-U20DA -------------------------------------------------------------------------------------	98
12-3. FRS(N)-U20EA -------------------------------------------------------------------------------------	109
12-4. FRS(N)-U20FA -------------------------------------------------------------------------------------	120
12-4. FRS(N)-U20GA -------------------------------------------------------------------------------------	131

1

1. WARNINGS AND PRECAUTIONS FOR SAFETY

Please observe the following safety precautions in order to use safely and correctly the refrigerator and to prevent accident and danger during repair.

1. Be care of an electric shock. Disconnect power cord from wall outlet and wait for more than three minutes before replacing PCB parts.

Shut off the power whenever replacing and repairing electric components.

2.When connecting power cord, please wait for more than five minutes after power cord was disconnected from the wall outlet.

3.Please check if the power plug is pressed down by the refrigerator against the wall. If the power plug was damaged, it may cause fire or electric shock.

4.If the wall outlet is over loaded, it may cause fire.

Please use its own individual electrical outlet for the refrigerator.

5.Please make sure the outlet is properly earthed, particularly in wet or damp area.

6.Use standard electrical components when replacing them.

7.Make sure the hook is correctly engaged.

Remove dust and foreign materials from the housing and connecting parts.

8.Do not fray, damage, machine, heavily bend, pull out or twist the power cord.

9.Please check the evidence of moisture intrusion in the electrical components. Replace the parts or mask it with insulation tapes if moisture intrusion was confirmed.

10.Do not touch the icemaker with hands or tools to confirm the operation of geared motor.

11.Do not let the customers repair, disassemble and reconstruct the refrigerator for themselves. It may cause accident, electric shock, or fire.

12.Do not store flammable materials such as ether, benzene, alcohol, chemicals, gas, or medicine in the refrigerator.

13.Do not put flower vase, cup, cosmetics, chemicals, etc., or container with full of water on the top of the refrigerator.

14.Do not put glass bottles with full of water into the freezer.

The contents shall freeze and break the glass bottles.

15.When you scrap the refrigerator, please disconnect the door gasket first and scrap it where children are not accessible.

2

2. EXTERNAL VIEWS

2-1. External Size

■ FRS(N)-U20IA

3

■ FRS(N)-U20DA / FRS(N)-U20EA

4

■ FRS(N)-U20FA / FRS(N)-U20GA

5

2-2. Name of Each Parts

■ FRS(N)-U20IA

1 6

2

	7
3	8
4	9
	10

5

11

12

	Freezer Compartment			Refrigerator Compartment
1.	Freezer light	6.	Dairy pocket
2.	Freezer pocket	7.	Refrigerator light
3.	Ice tray	8.	Chilled case
4.	Freezer shelf	9.	Refrigerator shelf
5.	Freezer case	10.		Movable Egg case
		11.		Refrigerator pocket
		12.		Refrigerator case

6

■ FRS(N)-U20DA

1 7

2
	8
3	9
	10
4
5	11
6	12

	Freezer Compartment			Refrigerator Compartment
1.	Ice cubes storage case	7.	Dairy pocket
2.	Freezer light	8.	Refrigerator light
3. Water/Ice dispenser		9.	Refrigerator shelf
4.	Freezer shelf	10.		Movable egg case
5.	Freezer pocket	11.		Refrigerator pocket
6.	Freezer case	12.		Refrigerator case

7

■ FRS(N)-U20EA

1 7

2
	8
3	9
	10
4
	11
5	12
	13
6	14

	Freezer Compartment			Refrigerator Compartment
1.	Ice cubes storage case	7.	Dairy pocket
2.	Freezer light	8.	Refrigerator light
3. Water/Ice dispenser		9.	Shelf wine (option)
4.	Freezer shelf	10.		Refrigerator shelf
5.	Freezer pocket	11.		Movable egg case
6.	Freezer case	12.		Refrigerator case
		13.		Refrigerator pocket
		14.		Magic cool zone

8

■ FRS(N)-U20FA

1

2

3

4

5

6

7

8

9

10

11

12

13

	Freezer Compartment			Refrigerator Compartment
1.	Ice cubes storage case	7.	Dairy pocket
2.	Freezer light	8.	Refrigerator light
3. Water/Ice dispenser		9.	Refrigerator shelf
4.	Freezer shelf	10.		Homebar pocket
5.	Freezer pocket	11.		Movable egg case
6.	Freezer case	12.		Refrigerator pocket
		13.		Refrigerator case

9

■ FRS(N)-U20GA
1	7
2	8
	9
3
	10
4	11
	12
	13
5
	14
6	15

	Freezer Compartment			Refrigerator Compartment
1.	Ice cubes storage case	7.	Dairy pocket
2.	Freezer light	8.	Refrigerator light
3. Water/Ice dispenser		9.	Shelf wine (option)
4.	Freezer shelf	10.		Refrigerator shelf
5.	Freezer pocket	11.		Homebar pocket
6.	Freezer case	12.		Movable egg case
		13.		Refrigerator pocket
		14.		Refrigerator case
		15.		Magic cool zone

10

3. SPECIFICATION

3-1. Specification

Item

Specification

Model Name

FRS(N)-

FRS(N)-

FRS(N)-

FRS(N)-

FRS(N)-

U20IA

U20DA

U20EA

U20FA

U20GA

ISO Gross

Total

570 Li

541 Li

525 Li

541Li

536 Li

Volume

Freezer

209 Li

184 Li

178 Li

184 Li

184 Li

(Li)

Refrigerator

361 Li

357 Li

337 Li

357 Li

352 Li

ISO Storage

Total

537 Li

504 Li

504 Li

504 Li

500 Li

Volume

Freezer

198 Li

170 Li

170 Li

170 Li

170 Li

(Li)

Refrigerator

339 Li

334 Li

334 Li

334 Li

330 Li

Weight

104kg

113kg

115kg

115kg

117kg

External Dimension

903 mm x 734.5mm x 1790 mm

(Width x Depth x Height)

C

Evaporator

Fin Type

Condenser

Fan Cooling System

Y

C

L

Dryer

Molecular Sieve XH-9

E

Capillary Tube

IDΦ0.7 × T0.55 × L2200

Description

HPL30YG-5

MK183Q-L2U

MK4A5Q-R1U

Compressor

Part Code

395S130R50

3956183D50

3956145250

Refrigerant ( g )

R-134a (190g)

R-134a (190g)

R-600a (76g)

SWITCH

Description

308NHB, S330

265RHB, S330

P RELAY AS

Part Code

3018129810

3011402100

Description

CP-2PIN

BS-1363

KP-550

CP-2PIN

(EUROPE)

(AUSTRALIA)

(Other Country)

CORD POWER AS

Part Code

3011346700

3011347300

3011301080

3011347400

11

			Item			Specification
			Model Name	FRS(N)-	FRS(N)-		FRS(N)-		FRS(N)-	FRS(N)-
				U20IA	U20DA		U20EA		U20FA	U20GA
		S	D-Sensor				PBN-43
		E
		N	F-Sensor				PBN-38
		S
		O
		R	R-Sensor				PBN-43
			Defrost Heater			AC220V / 192W
			Main Duct Heater				AC220V / 7W
		H
		E	Louver Heater				AC220V / 8W
		A
		T	Dispenser Heater	-			AC220V / 5W
		E
		R
			Water Pipe Heater	-			AC220V / 5W
			Homebar Heater		-				AC220V / 10W
			Main Fuse (Power cord)				AC250V 12A
			Fuse Temp (Defrost)		AC250V , 10A , 77
	E
			F-Fan Motor		DC13V / 2050±100 rpm
	L
	E	P
	C		R-Fan Motor		DC13V / 1850±100 rpm
		A
	T
		R
	R
		T	Condenser Fan Motor		DC13V / 1100±100 rpm
	I
		S
	C
	A		F-Lamp		AC230~240V / 25W (2EA)
	L
			R-Lamp		AC230~240V / 25W (2EA)
			Door Switch , F / R		SP201R-7DL / SP201R-7DR
					(SPF101B-2D / SPF101B-1D)

( ) is the specification for the model which use R-600a(refrigerant)

Refrigerant			Model Name
R-134a	FRS-U20IA	FRS-U20DA	FRS-U20EA	FRS-U20FA	FRS-U20GA
R-600a	FRN-U20IA	FRN-U20DA	FRN-U20EA	FRN-U20FA	FRN-U20GA

12

4. OPERATION AND FUNCTIONS

4-1. Display

4-1-1. FRS(N)-U20IA

INPUT	CONTROL OBJECT
FRZ.TEMP, REF.TEMP	Inner Control (Lamp-LED)
CONTENTS			REMARKS
		Temperature adjustment button
		for freezer compartment.
		Temperature adjustment button
		for refrigerator compartment.

1.“FRZ.TEMP” Button

1)Temperature control of Freezer compartment

2)5 step mode of successive temperature mode.

3)Initial mode by power input : “3”

Whenever pressing button, setting is repeated in the order of Medium(3) → Medium Max(4) → Max(5) → Min(1) → Medium Min(2).

	Temperature Chang	Min	Medium	Mid	Medium	Max
			Min		Max
	Temp indication	1	2	3	4	5

2.“REF.TEMP” button.

1)Temperature control of Refrigerator compartment

2)5 step mode of successive temperature mode.

3)Initial mode by power input : “3”

Whenever pressing button, setting is repeated in the order of Medium(3) → Medium Max(4) → Max(5) → Min(1) → Medium Min(2).

	Temperature Change	Min	Medium	Mid	Medium	Max
			Min		Max
	Temp indication	1	2	3	4	5

The actual inner temperature varies depending on the food status, as the indicated setting temperature is a target temperature, not actual temperature within refrigerator.

Refrigeration function is weak in the initial time.

Please adjust temperature as above after using refrigerator for minimum2~3 days.

13

4-1-2. FRS(N)-U20DA / EA / FA / GA

INPUT	CONTROL OBJECT

Front PCB button

FREEZER SET, REFRIGERATOR SET

SUPER FREEZER, SUPER REFRIGERATOR FCP C-LED RESET FILTER, WATER / ICE, ICE MAKER LOCK

,LOCK

CONTENTS	REMARKS

Water filter reset	Dispenser select button
Super freezer
Temperature adjustment button
for freezer compartment.

Ice maker lock button	Lock button
Super Refrigerator
Temperature adjustment button
for refrigerator compartment.

1. Display control

	FCP-LED	Control
	88 DISPLAY (SET TEMP.)	Initial mode : Freezer & Refrigerator set→
		Medium (-19 /4 )
	SUPER FREEZER,SUPER	Dial
	REFRIGERATOR ICON
	FUZZY, DEODORIZER ICON	Always ON
	WATER / CUBED ICE/ CRUSHED ICE ICON	Dial
	LOCK ICON	Dial
	ICE MAKER LOCK ICON	Dial
	FILTER CHANGE ICON	After six month, LED ON

2.“FREEZER SET” Button

1)Temperature control of freezer compartment

2)7 step mode of successive temperature mode.

3)Initial mode by power input : “Medium(-19 )”

Whenever pressing button, setting is repeated in the order of

Medium (-19 ) → Medium Max 1 (-20 ) → Medium Max 2 (-21 ) → Max (-22 ) → Min (-16 ) → Medium Min 2 (-17 ) → Medium Min 2 (-18 ).

Letters are indicated on 88 Display LED

	Temperature	Min	Medium	Medium	Medium	Medium	Medium	Max
	Change		Min 1	Min 2		Max 1	Max 2
	Temp	-16	-17	-18	-19	-20	-21	-22
	indication

3.“SUPER FREEZER” Button

When this mode is chosen, the icon (FREEZER QUICK) is ON.

14

CONTENTS

4.“REFRIGERATOR SET” button.

1)Temperature control of Refrigerator compartment

2)5 step mode of successive temperature mode.

3)Initial mode by power input : “Medium (4 )”

Whenever pressing button, setting is repeated in the order of

Medium (4 ) → Medium Max (3 ) → Max (2 ) → Min (6 ) → Medium Min (5 ).

Letters are indicated on 88 Display LED

	Temperature Change	Min	Medium	Mid	Medium	Max
			Min		Max
	Temp indication	6	5	4	3	2

5. “SUPER REFRIGERATOR” button.

When this mode is chosen, the icon (REFRIGERATOR QUICK) is ON.

6.“WATER / ICE” button

1)Select Water / Cubed Ice / Crushed Ice.

2)Icon lights up to show your selection is on. Initial mode by power input : “Water” mode.

3)The mode of Cubed Ice or Crushed Ice continues for 1 hour and then changes to Water. (Water icon turns ON)

7.“ICE MAKER LOCK” button

1)Start by pushing “ICE MAKER LOCK” button

“ICE MAKER LOCK” icon is on

“WATER” icon is always on

2)Stop by pushing “ICE MAKER LOCK” button again

“ICE MAKER LOCK” icon is off

“WATER” icon is on

8.“RESET WATER FILTER” button

1)The normal (ICON OFF) is on for 6 month after are first power input.

2)After sic months, icon is ON.

3)How to reset Filter information

Push the “RESET WATER FILTER” button for 3 seconds after change.

9.“LOCK” button

1)This button stops operation of different button.

“LOCK” icon is on

Press this button to lock out this case and to keep temperature and function setting.

2)Push “LOCK” button again for more than a second to stop it.

The actual inner temperature varies depending on the food status, as the indicated setting temperature is a target temperature, not actual temperature within refrigerator.

Refrigeration function is weak in the initial time.

Please adjust temperature as above after using refrigerator for minimum2~3 days.

REMARKS

REFERENCE : Please wait for 2-3 seconds in order

to take final ice or drops of water when taking out cup from the pressing switches after taking ice or water.

15

4-2. Defrost Mode

INPUT	CONTROL OBJECT

1. Comp

1. Defrosting Cycle 2. F-Fan

3. R-Fan

4. D-Heater

CONTENTS	REMARKS

1. Defrost Mode

Pre-Cool

Heater

Defrosting

Pause

Fan-Delay

Pre-Cool

1)Time : 50 minutes

2)Comp , F-fan : ON R-fan : Control

D-HTR : OFF

3) If F-sensor ≤ -27 , then Pre-Cool becomes. OFF

Heater

Defrosting

1)Comp, F-fan, R-fan : OFF D-HTR : ON

2)Time limit

30 seconds : Heater is ON regardless of D-sensor temperature right after defrosting start

30 minutes : in case of D1Error

80 minutes : in normal control state

3)If D-sensor ≥13 , Heater Defrosting is OFF

Pause

Time : 7 minutes

Comp, F-fan, R-fan, Heater etc. : OFF

Fan-Delay

1) Time : 5 minutes

Comp : ON and F-fan, R-fan, Heater : OFF

2.The defrost mode start with the following conditions

1)Total operation time of comp. becomes : 6,8,10,……… 24 hours.

Comp. operating rate : more 85%

Total door open time : 2 minutes

(Any door, F or R open time is over 2 minutes.)

Any error mode : R1, F1, D1, F3, RT/S, Door-switch etc.)

2)Defrosting mode starts unconditionally as long as total comp. work time is 24 hours, even if the above conditions 1) are not satisfied.

3)Defrosting mode starts immediately as long as total time of [comp. ON + comp. OFF] is over 60 hours, even if the above 1) and 2) conditions are not satisfied.

3.In providing initial power (or returning power failure)

If D-sensor temp. ≤ 3.5 , defrosting mode starts .

16

	CONTENTS	REMARKS
4. Flow Chart of Defrosting Start
	Start
	Comp. operating time	NO
	is over 2 hours?
	YES
YES	Total time is
	over 60 hours?
	NO
YES	Comp. operating time
	is over 24 hours?
	NO
	Comp. operating time	NO
	is over 6 hours?
	YES
YES	Comp. operating rate
	is more 85%?
	NO
YES	Any error ?
	NO
YES	Total door open
	time is over 2 min?
	NO
Defrosting start	End
	17

4-3. c (Forced Defrosting) Mode

INPUT	CONTROL OBJECT

1. Comp

1. Defrosting Cycle 2. F-Fan

3. R-Fan

4. D-Heater

CONTENTS	REMARKS

1. A/S Defrosting Mode (Heater defrost → Pause → Fan Delay)

Heater

Defrosting

Pause

Fan-Delay

Heater

Defrosting

1)Comp, F-fan, R-fan : OFF D-HTR : ON

2)Time limit

30 seconds : Heater is ON regardless of D-sensor temperature right after defrosting start

30 minutes : in case of D1-Error

80 minutes : in normal control state

3) If D-sensor ≥13 , Heater Defrosting is OFF

Pause

Time : 7 minutes

Comp, F-fan, R-fan, Heater etc. : OFF

Fan-Delay

1) Time : 5 minutes Comp : ON

F-fan, R-fan, Heater : OFF

2.How to start

1)Push “REF.TEMP” button 5 times while pushing “FRZ.TEMP” button simultaneously.

--------- FRS-U20IA

2)In “LOCK” mode, push “REFRIGERATOR SET” button 5 times while pushing “FREEZER SET” button simultaneously. ------ FRS(N)-U20DA

3.How to proceed

1)Delete Pre-cool mode. (Others are same as normal defrosting)

2)Heater is ON regardless of D-sensor temp. at first 30 seconds.

(Check of defrosting current)

4-4. Fan Voltage of Control Mode

			INPUT				CONTROL OBJECT
1.		F-Sensor					1. F-FAN, R-FAN, C-FAN
2.		R-Sensor
				CONTENTS					REMARKS
1. Fan voltage of control mode
	FAN		F-FAN		R-FAN		C-FAN
	Voltage		13 V		13 V		13 V
Refer to the 5-4. (Fan Function )

18

4-5. Louver Heater Control

	INPUT	CONTROL OBJECT
	1. Comp	Louver Heater
	CONTENTS		REMARKS

It is linked with comp.

4-6. Buzzer or Alarm Control

INPUT	CONTROL OBJECT

1. Control (Inner or F-PCB) buttons

2. Door Switch Buzzer

3. Initial Power Input

CONTENTS	REMARKS

1.Buzzer sounds if any button of Inner Control is pushed.

2.Buzzer sounds 4 times 3 seconds after initial power input.

3.Buzzer sounds for 3 or 1 times in case of A/S forced defrosting and short (pull down) operation or explanation mode.

4.If door is open, buzzer sounds after every 1 minutes for 5 minutes (Door open alarm)

4-7. Control of Interior Lights (FRS(N)-U20DA / EA / FA / GA)

	INPUT		CONTROL OBJECT
1.	Refrigerator door switch		Lamp
2.	Freezer door switch
3.	Home bar door switch
4.	Dispenser switch
	CONTENTS			REMARKS
1. Control	refrigerator compartment lights
R-Lights turn ON/OFF by R-door switch ON/OFF
( For 10 minutes after sensing door open, the lights turn off automatically
through door close is not sensed.)
2. Control of freezer compartment lights.
F-Light turn ON/OFF by F-door switch ON/OFF
( For 10 minutes after sensing door open, the lights turn off automatically
through door close is not sensed.)

3.R-lights ON/OFF by home bar door switch ON/OFF. ( for only model with home bar ) R-lights turn ON for 10 minutes after sensing home bar door switch open.

4.Dispenser lamp control ( for only model with water/ice dispenser )

Dispenser lamp turns ON/OFF by Dispenser switch.

Dispenser lamp turns ON for 4 seconds after sensing switch close.

19

4-8. Demonstration

4-8-1. FRS(N)-U20IA

	INPUT	CONTROL OBJECT
	1. FRZ. TEMP	Comp
		F/R-Fan
	2. Door Switch
		Heater
	CONTENTS		REMARKS

1. Start

Open and close “Freezer door switch” 5 times while pushing “FRZ. TEMP” button simultaneously.

2.Control

1)All other electrical components are OFF except for F-fan / R-fan

2)Fan Control

Door open → Fan ON / Door close → Fan OFF. 3) Display control

“FRZ. LED” and “REF. LED” are ON in good order

3.Stop

1)During Demo mode, push “Freezer door switch” open and close 5 times while pushing “FRZ. TEMP” button simultaneously.

2)Power in again

4-8-2. FRS(N)-U20DA / EA / FA / GA

INPUT	CONTROL OBJECT

Comp 1. “FREEZER SET, WATER/ICE” Button , Door switch F/R-Fan

Heater

CONTENTS	REMARKS

1. Start

Push “ICE/WATER” button 5 times while pushing “FREEZER SET” button simultaneously.

2.Control

1)All other electrical components are OFF except for F-fan / R-fan

2)Fan Control

Door OPEN → Fan ON / Door close → Fan OFF.

3.Stop or termination

1)During Demo mode, push “ICE/WATER” button 5 times while pushing “FREEZER SET” button simultaneously.

2)Power in again

20

4-9. Compensation of R-sensor ON/OFF Point

	INPUT	CONTROL OBJECT
	Main PCB	Resistance of R-sensor Mid ON/OFF Point
	CONTENTS		REMARKS

Compensation of R-sensor ON/OFF temp. (down)

In case temperature of refrigerator compartment is weak or insufficient, take the following action.

FRS(N)-U20IA			FRS(N)-U20DA/EA/FA/GA
	R-SENSOR			R-SENSOR
R36			R36
R37			R37
R38	J2	J1	R38	J19	J18
		J1			J18,19
		J2

R36 : R-SENSOR standard resistance in normal mode (31.4K)

R37 : In case of weak ref., cut J1 (or J18) to down the standard resistance by 1.5deg(2K) R38 : In case of weak ref., cut J2 (or J19) to down the standard resistance by 1.5deg(2K)

	J1	-	cut	cut
FRS(N)	J2	-	-	cut
-U20IA	Temperature	0	-1.5	3
	compensation
	J18	-	cut	cut
FRS(N)	J19	-	-	cut
-U20DA	Temperature	0	-1.5	3
	compensation

Refer to the 5-2. (Function of each sensor)

21

4-10. Error Display

4-10-1. FRS(N)-U20IA (LED Display of Inner Control)

INPUT

Temperature Control Buttons

CONTROL OBJECT

Lamp LED of Inner control

CONTENTS	REMARKS

1.How to start

1)Press “FRZ.TEMP” button 5 times while pressing “REF.TEMP” button at the same time.

2.How to stop

1)Push “FRZ.TEMP” button 1 time.

2)It stops automatically in 4 minutes from the start.

3.All the error codes are reset if they turn to be normal.

4.Error display

CONTENTS	Display
F-sensor : open (“Lo”), short (“Hi”)	FRZ. LED “5” is on and off
R-sensor : open (“Lo”), short (“Hi”)	FRZ. LED “4” is on and off
RT-sensor : open (“Lo”), short (“Hi”)	FRZ. LED “3” is on and off
D-sensor : open (“Lo”), short (“Hi”)	FRZ. LED “2” is on and off
R-Door Switch : defective	FRZ. LED “1” is on and off
F-Door Switch : defective	REF. LED “5” is on and off
Cycle : defective	REF. LED “3” is on and off
Return after defrosting : defective	REF. LED “2” is on and off
EEPROM : defective	REF. LED “1” is on and off
Full Down mode	REF. LED “1” is on
Forced defrost mode for A/S	REF. LED “1” is on and off (twice)

(Full down mode and forced defrost mode are displayed while pressing “REF.TEMP” button at the error display mode)

22

	CONTENTS	REMARKS

5.Control way of Errors (if any)

1)“F-sensor” error

Cause : F-sensor open or short

Control : Condition of ambient temperature

How to reset : If F-sensor is normal, the error is terminal temperature.

RT-S	~ 9	~ 15	~ 21	~ 31	~ 41	Over 41
ON/OFF (min)	14 / 50	16 / 41	27 / 45	26 / 22	35 / 20	35 / 20

2) “R-sensor” error

Cause : R-sensor open or short

Control : Condition of ambient temperature

How to reset : If R-sensor is normal, the error is terminal temperature.

RT-S	~ 9	~ 15	~ 21	~ 31	~ 41	Over 41
ON/OFF (min)	OFF	3 / 50	2 / 10	3 / 7	4 / 6	6 / 4

3) “RT-sensor” error

Cause : RT-sensor open or short (full down)

Control : Normal operation, deletion of control by RT-sensor

If RT-sensor is normal, the error is terminated automatically.

4) “D-sensor” error

Cause : D-sensor open or short (full down) Control : Time limit (30 min) of defrosting return

If D-sensor is normal, the error is terminated automatically.

5) “Door” error

Cause : in case it senses that door is open for more than 1 hour. Control : Deletion of function related door switch sensing

If door switch (open & close) is sensed, the error is terminated automatically.

6) “Cycle” error

Cause : in case comp. works for over 3 hours when D-sensor temp. is over -5 Control : normal operation

When D-sensor temp. is below -5 in comp. off it is terminated.

7) “Return after defrosting” error

Cause : in case defrosting return is done by time limit of 80 min Control : Deletion of Pre-cool mode in defrosting mode

If defrosting return is done by D-sensor, it is terminated.

8) A/S forced defrosting mode

Push “REFRIGERATOR SET” button 5 times while pushing “FREEZER SET” button Simultaneously.

Control : A/S forced defrosting control (Pre-cool is deleted)

If D-sensor temp. is over 10 , the mode is terminated automatically. When all error code is normal, the Refrigerator reset

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4-10-2. FRS(N)-U20DA/EA/FA/GA (CLED Display of Front PCB)

	INPUT	CONTROL OBJECT
	Temperature Control Buttons	88 Display CLED
	CONTENTS		REMARKS

1.How to start

1)Under “LOCK” mode, press “SUPER FREEZER” button 5 times while pressing “FREEZER SET” button at the same time.

2)The front CLED displays as the right diagram shows

([Ex.] Time Display of 0003 signifies 3 minutes of power on time.)

3)Press “FREEZER SET” button and the following value is displayed successively.Time

F-Sensor temperatureD-Sensor temperatureR-Sensor temperatureRT-Sensor temperature

P Factor display (Refer to water supply mode of automatic icemaker)Filter remaining time until change (First check ; 4,320Hr)

Refer to Filter Information Reset of CLED of front control panel.

4)Error is displayed only if there is any ; it is skipped if no error.

2.How to stop

1)Push “LOCK” button 1 time.

2)It stops automatically in 4 minutes from the start.

3.All the error Codes are reset if they turn to be normal.

4.Error code

ERROR CODE	CONTENTS
F1	F-sensor : disconnection (“Lo”), short (“Hi”)
r1	R-sensor : disconnection (“Lo”), short (“Hi”)
rt	RT-sensor : disconnection (“Lo”), short (“Hi”)
d1	D-sensor : disconnection (“Lo”), short (“Hi”)
dr	R-Door Switch : defective
dF	F-Door Switch : defective
dH	Home bar Door Switch : defective
EI	I-sensor : disconnection (“Lo”), short (“Hi”)
EF	Flow sensor : defective
Et	Horizontal switch : error
Eg	Water supply : error
ES	Micro switch : error
EA	Drop the ice while Et
Eu	Full ice switch : error
C1	Cycle : abnormal or defective
F3	Return after defrosting : abnormal or defective
Co	Display Full Down mode
D2	Display forced defrost mode for A/S

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CONTENTS

5.Control way of Error (if any)

1)“F1” error

Cause : F-sensor disconnection or short

Check point : Measure the resistance between both terminals after separating CN8 (or CN15) of the Main PCB. (Refer to the 5-2.)

If F-sensor is disconnected or shorted , change the F-sensor in the freezer compartment. How to reset : If F-sensor is normal, the error is terminal temperature.

2)“R1” error

Cause : R-sensor disconnection or short

Check point : Measure the resistance between both terminals after separating CN7 (or CN14) of the Main PCB. (Refer to the 5-2.)

If R-sensor is disconnected or shorted , change the F-sensor in the refrigerator compartment. How to reset : If R-sensor is normal, the error is terminal temperature.

3) “rt” error

Cause : RT-sensor disconnection or short (full down)

Check point : Measure the voltage of “A” part on the Main PCB. If the voltage is 0.5V~4.5V, it is normal.

If the voltage is 0V (short) or 5V (disconnected), change the RT-sensor on the Main PCB How to reset : If RT-sensor is normal, the error is terminated automatically.

A	A

< FRS(N)-U20IA >

< FRS(N)-U20DA >

4) “d1” error

Cause : D-sensor disconnection or short (full down)

Check point : Measure the resistance between both terminals after separating CN8 (or CN15) of the Main PCB. (Refer to the 5-2.)

If D-sensor is disconnected or shorted , change the D-sensor on the evaporator. How to reset : If D-sensor is normal, the error is terminated automatically.

5) Door error (“dF” “dR” “dH” on display)

Cause : in case it senses that door is open for more than 1 hour. Check point : F/R door is opened or not.

6) “C1” error

Cause : in case comp. works for over 3 hours when D-sensor temp. is over -5 Check point : Refrigerant leakage.

7) “F3” error

Cause : in case defrosting return is done by time limit of 80 min

Check point : Measure the resistance between both terminals of the defrost heater. (Assembled with evaporator)

If the resistance is ∞Ω (disconnected) or 0Ω (short) change the

8) “d2” mode (A/S forced defrosting mode)

Push “REFRIGERATOR SET” button 5 times while pushing “FREEZER SET” button simultaneously.

Control : A/S forced defrosting control (Pre-cool is deleted)

If D-sensor temp. is over 10 , the mode is terminated automatically. Refer to the 4-3. .

REMARKS

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	CONTENTS	REMARKS

9) “EI”ERROR

Cause : I-SENSOR disconnection / short

Check point : Measure the resistance between both terminals after separating CN11 of the Main PCB. (Refer to the 5-2.)

If F-sensor is disconnected or shorted , change the I-sensor in the automatic ice maker.

10) “EF” ERROR

Cause : When Flow-sensor ERROR (There is no Pulse during some time)

The number of pulse signal is below 10 by 1 sec during water supply.

Check point : Water supply line

11) “Eg” ERROR

Cause : I-sensor temp (5min after water supply) doesn’t go up.

Check the I-sensor or water supply line.

12) “ES” error (MICRO switch error)

Cause : When it senses 1min continuously

Check the MICRO switch of the dispenser.

13) “Ea” error

Cause : Malfunction of ice drop motor.

Check the motor by pushing test switch.

14) “Eu” error

Cause : Switch (which senses if the ice is full or not) is in error.

Control : When dropping the ice, the motor just rotates 90 degree.

Termination : When the switch is in normal.

15)“EA“ ERROR

Cause : When sensing Ice dropping by time 3 times in level sensor SW Error.

Control : Stop of Ice Maker

Termination : With normal level switch.

Re-input of power or push if icemaker test switch.

16)“Et” ERROR

Cause : Level switch error (No pulse is sensed for some time)

Control : By time (Supply mode is skipped)

Termination : Normal condition.

* When all ERROR CODE is normal, the Refrigerator reset

26

4-11. Summary of Function

4-11-1. FRS(N)-U20IA (Inner Control)

	INPUT			CONTROL OBJECT
	Each button			Resistance of R-sensor Mid ON/OFF Point
			CONTENTS				REMARKS
Element A/S Function
	Forced Defrosting		“FRZ.TEMP” + “REF.TEMP” 5 times
	Pull Down		“REF.TEMP”+ “FRZ.DOOR” OPEN/CLOSE 5 times
	Demo function		“FRZ.TEMP”+ “FRZ.DOOR” OPEN/CLOSE 5 times
	Error display		“REF.TEMP”+ “FRZ.TEMP” 5 times

4-11-2. FRS(N)-U20DA/EA/FA/GA (Front PCB)

	INPUT	CONTROL OBJECT
	Each button	Resistance of R-sensor Mid ON/OFF Point
	CONTENTS		REMARKS

1.All the modes are started “LOCK” mode (except “FILTER RESET” mode)

2.Element A/S Function

Forced Defrosting	“FREEZER SET” + “REFRIGERATOR SET” 5 times
Reset water filter	Push “RESET WATER FILTER” for 3 seconds
Demo function	“REFRIGERATOR SET” + “WATER/ICE” 5 times
Pull Down	“REFRIGERATOR SET”+ “FREEZER SET”+ “WATER/ICE”5 times
Error display	“FREEZER SET”+ “SUPER FREEZER” 5 times
EEPROM clear	“WATER/ICE”+ “RESET WATER FILTER” 5times
Ice maker test	“WATER/ICE” + “ICE MAKER LOCK” 5 times

27

4-12. Back up Function (FRS(N)-U20DA/EA/FA/GA)

	INPUT	CONTROL OBJECT
	None	1. F-FAN, R-FAN, C-FAN
	CONTENTS		REMARKS

1.Filter Exchange Information : Record as a real-time from the point of power input

2.P Factor (Information about Ice Maker)

4-13. Automatic Icemaker ( FRS(N)-U20DA/EA/FA/GA)

INPUT	CONTROL OBJECT

Full ice sensing switch

Ice Maker Lock Ice separating motor

Sensors

CONTENTS	REMARKS

1. Flow of ice making

START

Ice making mode	Ice is being made

(water supply stand by)

Ice separating mode

Water supply mode

Water supply check mode

Ice tray is twisted to separate ice cubes

Water is supplied to ice tray

Check is water is supplied OK.

RETURN

1)Press TEST switch under the Icemaker for more than 1 second and test starts. * Test mode starts from ice separating mode.

* In case test switch has an error of short, test is done only once.

28

CONTENTS

2)With the initial power input, Ice tray turns to be horizontal and ice making mode starts.

3)Control of water hose heater

* Heater is always ON if RT-sensor has an error or RT is below 15 degree. * Heater is always ON for 60 minutes (max. Limit time) if Flow-sensor has an error

4)Water supply stand-by

Condition : if ice is sensed full

Operation : proceeds to Ice making mode (Ice separating and water supply Modes stop)

5) Crusher Function

It stops operation when freezer door is open

It operates if freezer door is closed.

2 Ice making mode

START

NO

NO

I-S -9.5

130 min passed?

YES

YES

NO

NO

I-S 12.5

15 min passed?

YES

YES

Ice saparating mode

1)Ice making stops if ice-sensor is below -12.5 after 130 minutes.

2)Ice making also stops if ice-sensor is below -9.5 for 15 minutes, though ice-sensor is not below -12.5 after 130 minutes.

3)In case of ice sensor, ice making stops after 4.8 hours.

REMARKS

29