DAEWOO FRSU21FAI I User Manual

Refrigerator

S/M No: FRSU20IA03

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. EXTERNAN VIEW

2-1. External Size ----------------------------------------------------------------------------------------2-2. Name of Each Parts ---------------------------------------------------------------------------------

3. SPECIFICATION ---------------------------------------------------------------------------------------

4. OPERATION AND FUNCTIONS -------------------------------------------------------------------

5. CIRCUIT OPERATION

5-1. Power Circuit Diagram ----------------------------------------------------------------------------5-2. Function of Each Sensor -------------------------------------------------------------------------5-3. Relay Function --------------------------------------------------------------------------------------5-4. Fan Function -----------------------------------------------------------------------------------------

6. DIAGRAM

6-1. Wiring Diagram --------------------------------------------------------------------------------------6-2. Circuit Diagram of Main PCB ---------------------------------------------------------------------

7. COMPONENT LOCATE VIEW ---------------------------------------------------------------------

8. HOW TO CHECK EACH PARTS

8-1. Hose Ice Maker Tube ------------------------------------------------------------------------------8-2. Bracket Geared Motor -----------------------------------------------------------------------------8-3. Dispenser Micro Switch ---------------------------------------------------------------------------8-4. Dispenser Solenoid Valve ------------------------------------------------------------------------8-5. Main PCB ---------------------------------------------------------------------------------------------8-6. Ice Maker ----------------------------------------------------------------------------------------------

9. TROUBLE DIAGNOSIS

9-1. Power Failure ----------------------------------------------------------------------------------------9-2. Freezer Compartment -----------------------------------------------------------------------------9-3. Refrigerator Compartment ------------------------------------------------------------------------9-4. Operation Noise of Refrigerator -----------------------------------------------------------------9-5. Door -----------------------------------------------------------------------------------------------------

10. COOLING CYCLE HEAVY REPAIR

10-1. Summary of Heavy Repair ----------------------------------------------------------------------10-2. Precaution during Heavy Repair --------------------------------------------------------------10-3. Practical Work for Heavy Repair --------------------------------------------------------------10-4. Standard Regulations for Heavy Repair -----------------------------------------------------10-5. Brazing Reference Drawing ---------------------------------------------------------------------

11. INSTALLATION GUIDE

11-1. Installation Preparation --------------------------------------------------------------------------11-2. If the Refrigerator can not enter the Door ---------------------------------------------------11-3. Refrigerator Leveling & Door Adjustment ---------------------------------------------------11-4. Water Line Installation ---------------------------------------------------------------------------11-5. Dispenser Water Flow ----------------------------------------------------------------------------

12. EXPLODED VIEW & PARTS LIST

12-1. FRS(N)-U20IA -------------------------------------------------------------------------------------12-2. FRS(N)-U20DA ------------------------------------------------------------------------------------12-3. FRS(N)-U20EA ------------------------------------------------------------------------------------12-4. FRS(N)-U20FA ------------------------------------------------------------------------------------12-4. FRS(N)-U20GA -------------------------------------------------------------------------------------

3 6

34 35 37 39

48 49 50 51 52 53

56 57 63 67 74

75 76 77 79 80

81 82 84 85 87

98 109 120 131

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. EXTERNAL VIEWS

2-1. External Size

■ FRS(N)-U20IA

■ FRS(N)-U20DA / FRS(N)-U20EA

■ FRS(N)-U20FA / FRS(N)-U20GA

2-2. Name of Each Parts

■ FRS(N)-U20IA

Freezer Compartment

Refrigerator Compartment

6. Dairy pocket1. Freezer light

7. Refrigerator light2. Freezer pocket

8. Chilled case3. Ice tray

9. Refrigerator shelf4. Freezer shelf

10. Movable Egg case5. Freezer case

11. Refrigerator pocket

12. Refrigerator case

■ FRS(N)-U20DA

Freezer Compartment

Refrigerator Compartment

7. Dairy pocket1. Ice cubes storage case

8. Refrigerator light2. Freezer light

9. Refrigerator shelf3. Water/Ice dispenser

10. Movable egg case4. Freezer shelf

11. Refrigerator pocket5. Freezer pocket

12. Refrigerator case6. Freezer case

■ FRS(N)-U20EA

Freezer Compartment

Refrigerator Compartment

7. Dairy pocket1. Ice cubes storage case

8. Refrigerator light2. Freezer light

9. Shelf wine (option)3. Water/Ice dispenser

10. Refrigerator shelf4. Freezer shelf

11. Movable egg case5. Freezer pocket

12. Refrigerator case6. Freezer case

13. Refrigerator pocket

14. Magic cool zone

■ FRS(N)-U20FA

Freezer Compartment

Refrigerator Compartment

7. Dairy pocket1. Ice cubes storage case

8. Refrigerator light2. Freezer light

9. Refrigerator shelf3. Water/Ice dispenser

10. Homebar pocket4. Freezer shelf

11. Movable egg case5. Freezer pocket

12. Refrigerator pocket6. Freezer case

13. Refrigerator case

■ FRS(N)-U20GA

Freezer Compartment

Refrigerator Compartment

7. Dairy pocket1. Ice cubes storage case

8. Refrigerator light2. Freezer light

9. Shelf wine (option)3. Water/Ice dispenser

10. Refrigerator shelf4. Freezer shelf

11. Homebar pocket5. Freezer pocket

12. Movable egg case6. Freezer case

13. Refrigerator pocket

14. Refrigerator case

15. Magic cool zone

3. SPECIFICATION

3-1. Specification

SpecificationItem

ISO Gross

Volume

(Li)

ISO Storage

Volume

(Li)

(Width x Depth x Height)

C Y C L E

Model Name

Weight

External Dimension

FRS(N)-

U20IA

537 Li 198 Li

339 Li

104kg

FRS(N)-

U20DA

541 Li 184 Li

357 Li 504 Li 170 Li

334 Li

903 mm x 734.5mm x 1790 mm

IDΦ0.7 × T0.55 × L2200Capillary Tube

FRS(N)-

U20EA

525 Li570 LiTotal 178 Li209 LiFreezer

337 Li361 LiRefrigerator 504 LiTotal 170 LiFreezer

334 LiRefrigerator

Fin TypeEvaporator

Fan Cooling SystemCondenser

Molecular Sieve XH-9Dryer

FRS(N)-

U20FA

541Li 184 Li

357 Li 504 Li 170 Li

334 Li

FRS(N)-

U20GA

536 Li 184 Li

352 Li 500 Li 170 Li

330 Li

117kg115kg113kg 115kg

Compressor

SWITCH

P RELAY AS

CORD POWER AS

Description

Part Code

Description

308NHB, S330

3018129810

CP-2PIN

(EUROPE)

MK183Q-L2UHPL30YG-5Description

BS-1363

265RHB, S330

3011402100

KP-550

(AUSTRALIA)

301130108030113473003011346700Part Code

MK4A5Q-R1U

39561452503956183D50395S130R50Part Code

R-600a (76g)R-134a (190g)R-134a (190g)Refrigerant ( g )

CP-2PIN

(Other Country)

3011347400

SpecificationItem

S O R

E R

Model Name

Water Pipe Heater

FRS(N)-

U20IA

FRS(N)-

U20DA

-Homebar Heater

AC220V / 192WDefrost Heater

AC220V / 7WMain Duct Heater

AC220V / 8WLouver Heater

FRS(N)-

U20EA

PBN-43D-SensorS

PBN-38F-Sensor

PBN-43R-Sensor

AC220V / 5W-Dispenser Heater

AC220V / 5W

FRS(N)-

U20FA

AC220V / 10W

FRS(N)-

U20GA

AC250V 12AMain Fuse (Power cord)

Fuse Temp (Defrost)

AC250V , 10A , 77

E L E

C A

DC13V / 2050±100 rpmF-Fan Motor

DC13V / 1850±100 rpm R-Fan Motor

DC13V / 1100±100 rpmCondenser Fan Motor

AC230~240V / 25W (2EA)F-Lamp

AC230~240V / 25W (2EA)R-Lamp

Door Switch , F / R

SP201R-7DL / SP201R-7DR

(SPF101B-2D / SPF101B-1D)

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

Model NameRefrigerant

℃

FRS-U20GAFRS-U20FAFRS-U20EAFRS-U20DAFRS-U20IAR-134a

FRN-U20GAFRN-U20FAFRN-U20EAFRN-U20DAFRN-U20IAR-600a

4. OPERATION AND FUNCTIONS

4-1. Display

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

INPUT

FRZ.TEMP, REF.TEMP Inner Control (Lamp-LED)

CONTENTS

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).

CONTROL OBJECT

REMARKS

Temperature adjustment button for freezer compartment.

Temperature adjustment button for refrigerator compartment.

MinTemperature Chang

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).

MinTemperature Change

※ 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.

Medium

Min

Medium

Min

Mid

321Temp indication

Mid

321Temp indication

Medium

Max

Medium

Max

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

INPUT

Front PCB button FREEZER SET, REFRIGERATOR SET SUPER FREEZER, SUPER REFRIGERATOR RESET FILTER, WATER / ICE, ICE MAKER LOCK ,LOCK

CONTENTS

Water filter reset

Super freezer

Temperature adjustment button for freezer compartment.

Dispenser select button

CONTROL OBJECT

Ice maker lock button

Super Refrigerator

Temperature adjustment button

for refrigerator compartment.

FCP C-LED

REMARKS

Lock button

1. Display control

ControlFCP-LED

88 DISPLAY (SET TEMP.)

SUPER FREEZER,SUPER

REFRIGERATOR ICON

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

Change

Temp

indication

Min

Medium

Min 1

Medium

Min 2

-18℃

Initial mode : Freezer & Refrigerator set→

Medium (-19℃/4℃)

Dial

Always ONFUZZY, DEODORIZER ICON

DialWATER / CUBED ICE/ CRUSHED ICE ICON

DialLOCK ICON

DialICE MAKER LOCK ICON

After six month, LED ONFILTER CHANGE ICON

Medium

-19℃

Medium

Max 1

-20℃-17℃-16℃

Medium

Max 2

-21℃

Max

-22℃

3. “SUPER FREEZER” Button When this mode is chosen, the icon (FREEZER QUICK) is ON.

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

REMARKS

MinTemperature Change

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

① “ICE MAKER LOCK” icon is on ② “WATER” icon is always on

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

① “ICE MAKER LOCK” icon is off ② “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 ① Push the “RESET WATER FILTER” button for 3 seconds after change.

Medium

Min

Mid

4℃5℃6℃Temp indication

Medium

Max

2℃3℃

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.

9. “LOCK” button

1) This button stops operation of different button.

① “LOCK” icon is on ② 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.

4-2. Defrost Mode

1. Defrost Mode

Pre-Cool

Heater

Defrosting

INPUT

1. Defrosting Cycle

Pre-Cool

1) Time : 50 minutes

2) Comp , F-fan : ON

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

Heater Defrosting

1) Comp, F-fan, R-fan : OFF

2) Time limit 30 seconds : Heater is ON regardless of D-sensor

30 minutes : in case of D1- Error 80 minutes : in normal control state

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

CONTENTS

R-fan : Control

D-HTR : OFF

D-HTR : ON

temperature right after defrosting start

CONTROL OBJECT

1. Comp

2. F-Fan

3. R-Fan

4. D-Heater

REMARKS

Pause

Fan-Delay

2.The defrost mode start with the following conditions

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

① Comp. operating rate : more 85% ② Total door open time : 2 minutes

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

③ 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)

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

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

4. Flow Chart of Defrosting Start

CONTENTS

Start

REMARKS

YES

Comp. operating time

is over 2 hours?

YES

Total time is

over 60 hours?

Comp. operating time

is over 24 hours?

Comp. operating time

is over 6 hours?

YES

Comp. operating rate

is more 85%?

Defrosting start

YES

Any error ?

Total door open

time is over 2 min?

End

4-3. c (Forced Defrosting) Mode

INPUT

1. Defrosting Cycle

CONTENTS

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

Heater

Defrosting

Pause

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

CONTROL OBJECT

1. Comp

2. F-Fan

3. R-Fan

4. D-Heater

REMARKS

Fan-Delay

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)

Fan-Delay

1) Time : 5 minutes Comp : ON F-fan, R-fan, Heater : OFF

4-4. Fan Voltage of Control Mode

INPUT

1. F-Sensor

2. R-Sensor

CONTENTS

1. Fan voltage of control mode

1. F-FAN, R-FAN, C-FAN

CONTROL OBJECT

REMARKS

※ Refer to the 5-4. (Fan Function )

C-FANR-FANF-FANFAN

13 V13 V13 VVoltage

4-5. Louver Heater Control

INPUT

1. Comp

CONTENTS

It is linked with comp.

4-6. Buzzer or Alarm Control

INPUT

1. Control (Inner or F-PCB) buttons

2. Door Switch

3. Initial Power Input

CONTENTS

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.

CONTROL OBJECT

Louver Heater

REMARKS

CONTROL OBJECT

Buzzer

REMARKS

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

1. Refrigerator door switch

2. Freezer door switch

3. Home bar door switch

4. Dispenser switch

CONTENTS

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.

CONTROL OBJECT

Lamp

REMARKS

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.

4-8. Demonstration

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

INPUT

1. FRZ. TEMP

2. Door Switch

CONTENTS

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 F/R-Fan Heater

REMARKS

CONTROL OBJECT

1. “FREEZER SET, WATER/ICE” Button , Door switch

CONTENTS

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

Comp F/R-Fan Heater

REMARKS

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

INPUT

Main PCB

CONTENTS

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

R-SENSOR

R36

R37

R38

FRS(N)-U20DA/EA/FA/GA

R36

R37

R38

CONTROL OBJECT

Resistance of R-sensor Mid ON/OFF Point

REMARKS

R-SENSOR

J19

J18

※ Refer to the 5-2.

(Function of each sensor)

J18,19

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)

cutcut-J1

FRS(N)

-U20IA

FRS(N)

-U20DA

Temperature

compensation

Temperature

compensation

℃

-1.5

℃

cut--J2

℃

cutcut-J18 cut--J19

℃

4-10. Error Display

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

INPUT

Temperature Control Buttons Lamp LED of Inner control

CONTENTS

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

FRZ. LED “5” is on and off F-sensor : open (“Lo”), short (“Hi”)

FRZ. LED “4” is on and offR-sensor : open (“Lo”), short (“Hi”)

CONTROL OBJECT

REMARKS

DisplayCONTENTS

FRZ. LED “3” is on and offRT-sensor : open (“Lo”), short (“Hi”)

FRZ. LED “2” is on and offD-sensor : open (“Lo”), short (“Hi”)

FRZ. LED “1” is on and offR-Door Switch : defective

REF. LED “5” is on and offF-Door Switch : defective

REF. LED “3” is on and offCycle : defective

REF. LED “2” is on and offReturn after defrosting : defective

REF. LED “1” is on and offEEPROM : defective

REF. LED “1” is onFull Down mode

REF. LED “1” is on and off (twice)Forced defrost mode for A/S

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

CONTENTS

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.

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.

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.

REMARKS

Over 41℃~ 41℃~ 31℃~ 21℃~ 15℃~ 9℃RT-S

35 / 2035 / 2026 / 2227 / 4516 / 4114 / 50ON/OFF (min)

Over 41℃~ 41℃~ 31℃~ 21℃~ 15℃~ 9℃RT-S

6 / 44 / 63 / 72 / 103 / 50OFFON/OFF (min)

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

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

INPUT

Temperature Control Buttons 88 Display CLED

CONTENTS

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.

① Time ② F-Sensor temperature ③ D-Sensor temperature ④ R-Sensor temperature ⑤ RT-Sensor temperature ⑥ P Factor display (Refer to water supply mode of automatic icemaker) ⑦ 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.

CONTROL OBJECT

REMARKS

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

4. Error code

CONTENTSERROR CODE

F-sensor : disconnection (“Lo”), short (“Hi”)F1

R-sensor : disconnection (“Lo”), short (“Hi”)r1

RT-sensor : disconnection (“Lo”), short (“Hi”)rt

D-sensor : disconnection (“Lo”), short (“Hi”)d1

R-Door Switch : defectivedr

F-Door Switch : defectivedF

Home bar Door Switch : defectivedH

I-sensor : disconnection (“Lo”), short (“Hi”)EI

Flow sensor : defectiveEF

Horizontal switch : errorEt

Water supply : errorEg

Micro switch : errorES

Drop the ice while EtEA

Full ice switch : errorEu

Cycle : abnormal or defectiveC1

Return after defrosting : abnormal or defectiveF3

Display Full Down modeCo

Display forced defrost mode for A/SD2

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.

REMARKS

< FRS(N)-U20IA >

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

< FRS(N)-U20DA >

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. .

CONTENTS

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.

REMARKS

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

4-11. Summary of Function

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

INPUT

Each button

CONTENTS

Element A/S Function

“FRZ.TEMP” + “REF.TEMP” 5 timesForced Defrosting

“REF.TEMP”+ “FRZ.DOOR” OPEN/CLOSE 5 timesPull Down

“FRZ.TEMP”+ “FRZ.DOOR” OPEN/CLOSE 5 timesDemo function

“REF.TEMP”+ “FRZ.TEMP” 5 timesError display

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

INPUT

CONTROL OBJECT

Resistance of R-sensor Mid ON/OFF Point

REMARKS

CONTROL OBJECT

Each button

CONTENTS

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

2. Element A/S Function

“FREEZER SET” + “REFRIGERATOR SET” 5 timesForced Defrosting

Push “RESET WATER FILTER” for 3 secondsReset water filter

“REFRIGERATOR SET” + “WATER/ICE” 5 timesDemo function

“REFRIGERATOR SET”+ “FREEZER SET”+ “WATER/ICE”5 timesPull Down

“FREEZER SET”+ “SUPER FREEZER” 5 timesError display

“WATER/ICE”+ “RESET WATER FILTER” 5timesEEPROM clear

“WATER/ICE” + “ICE MAKER LOCK” 5 timesIce maker test

Resistance of R-sensor Mid ON/OFF Point

REMARKS

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

INPUT

None

CONTENTS

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

Full ice sensing switch Ice Maker Lock Sensors

CONTENTS

1. Flow of ice making

CONTROL OBJECT

1. F-FAN, R-FAN, C-FAN

REMARKS

CONTROL OBJECT

Ice separating motor

REMARKS

START

Ice making mode

(water supply stand by)

Ice separating mode

Water supply mode

Water supply

check mode

RETURN

Ice is being made

▶

Ice tray is twisted to separate

▶

Water is supplied to ice tray

▶

Check is water is supplied OK.

▶

ice cubes

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.

+ 67 hidden pages

DAEWOO FRSU21FAI I User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual