Daewoo FRU-5711-FRS-U20DA Series User manual

Refrigerator
S/M No: FRSU20IA03
July . 2005
4 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

1
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- . 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 CHEC EACH PARTS
8-1. Hose Ice Maker Tube -------------------------------------------------------------------------------
8-2. Bracket Geared Motor ------------------------------------------------------------------------------
8- . 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- . 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- . 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- . 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- . FRS(N)-U20EA -------------------------------------------------------------------------------------
12-4. FRS(N)-U20FA -------------------------------------------------------------------------------------
12-4. FRS(N)-U20GA -------------------------------------------------------------------------------------
2
6
11
14
4
5
7
9
40
42
46
48
49
50
51
52
5
56
57
6
67
74
75
76
77
79
80
81
82
84
85
87
88
98
109
120
1 1

2
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.
. 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.
1 . 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.
1. WARNINGS AND PRECAUTIONS FOR SAFETY

2. EXTERNAL VIEWS
2-1. External Size
■FRS(N)-U20IA

4
■FRS(N)-U20DA / FRS(N)-U20EA

5
■FRS(N)-U20FA / FRS(N)-U20GA

6
12. Refrigerator case
11. Refrigerator pocket
10. Movable Egg case5. Freezer case
9. Refrigerator shelf4. Freezer shelf
8. Chilled case. Ice tray
7. Refrigerator light2. Freezer pocket
6. Dairy pocket1. Freezer light
Refrigerator Compartment
Freezer Compartment
2-2. Name of Each Parts
■FRS(N)-U20IA
1
2
4
3
5
7
8
9
10
11
6
12

7
7. Dairy pocket1. Ice cubes storage case
12. Refrigerator case6. Freezer case
11. Refrigerator pocket5. Freezer pocket
10. Movable egg case4. Freezer shelf
9. Refrigerator shelf. Water/Ice dispenser
8. Refrigerator light2. Freezer light
Refrigerator Compartment
Freezer Compartment
■FRS(N)-U20DA
8
9
10
11
12
7
1
2
4
3
5
6

8
■FRS(N)-U20EA
8
10
11
13
14
7
1
2
4
3
5
6
9
12
1 . Refrigerator pocket
12. Refrigerator case6. Freezer case
7. Dairy pocket1. Ice cubes storage case
14. Magic cool zone
11. Movable egg case5. Freezer pocket
10. Refrigerator shelf4. Freezer shelf
9. Shelf wine (option). Water/Ice dispenser
8. Refrigerator light2. Freezer light
Refrigerator Compartment
Freezer Compartment

9
12. Refrigerator pocket6. Freezer case
7. Dairy pocket1. Ice cubes storage case
1 . Refrigerator case
11. Movable egg case5. Freezer pocket
10. Homebar pocket4. Freezer shelf
9. Refrigerator shelf. Water/Ice dispenser
8. Refrigerator light2. Freezer light
Refrigerator Compartment
Freezer Compartment
■FRS(N)-U20FA
8
9
11
12
13
7
1
2
4
3
5
6
10

10
■FRS(N)-U20GA
8
9
11
12
15
7
1
2
4
3
5
6
10
1 . Refrigerator pocket
14. Refrigerator case
12. Movable egg case6. Freezer case
7. Dairy pocket1. Ice cubes storage case
15. Magic cool zone
11. Homebar pocket5. Freezer pocket
10. Refrigerator shelf4. Freezer shelf
9. Shelf wine (option). Water/Ice dispenser
8. Refrigerator light2. Freezer light
Refrigerator Compartment
Freezer Compartment
13
14

11
3. SPECIFICATION
3-1. Specification
117kg115kg113kg 115kg
330 Li
170 Li
500 Li
352 Li
184 Li
536 Li
FRS(N)-
U20GA
334 Li
170 Li
504 Li
357 Li
184 Li
541Li
FRS(N)-
U20FA
334 Li
170 Li
504 Li
357 Li
184 Li
541 Li
FRS(N)-
U20DA
C
Y
C
L
EIDΦ0.7 ×T0.55 ×L2200Capillary Tube
Molecular Sieve XH-9Dryer
Fan Cooling SystemCondenser
Fin TypeEvaporator
525 Li570 LiTotal
ISO Gross
Volume
(Li) 178 Li209 LiFreezer
337 Li361 LiRefrigerator
903 mm x 734.5mm x 1790 mm
104kg
339 Li
198 Li
537 Li
FRS(N)-
U20IA
External Dimension
(Width x Depth x Height)
Weight
334 LiRefrigerator
170 LiFreezer
504 LiTotal
ISO Storage
Volume
(Li)
FRS(N)-
U20EA
Model Name
SpecificationItem
R-600a (76g)R-134a (190g)R-134a (190g)Refrigerant ( g )
39561452503956183D50395S130R50Part Code
MK4A5Q-R1U
3011402100
265RHB, S330
MK183Q-L2UHPL30YG-5Description
Compressor
3018129810
308NHB, S330
Part Code
Description
SWITCH
P RELAY AS
3011347400
CP-2PIN
(Other Country)
301130108030113473003011346700Part Code
KP-550
(AUSTRALIA)
BS-1363
CP-2PIN
(EUROPE)
Description
CORD POWER AS

12
※( ) is the specification for the model which use R-600a(refrigerant)
AC220V / 10W
AC220V / 5W
-
Water Pipe Heater
SP201R-7DL / SP201R-7DR
(SPF101B-2D / SPF101B-1D)
Door Switch , F / R
AC2 0~240V / 25W (2EA)R-Lamp
AC2 0~240V / 25W (2EA)F-Lamp
DC1 V / 1100±100 rpmCondenser Fan Motor
DC1 V / 1850±100 rpm R-Fan Motor
DC1 V / 2050±100 rpmF-Fan Motor
AC250V , 10A , 77℃ Fuse Temp (Defrost)
AC250V 12AMain Fuse (Power cord)
P
A
R
T
S
E
L
E
C
T
R
I
C
A
L
-Homebar Heater
AC220V / 5W-Dispenser Heater
AC220V / 8WLouver Heater
AC220V / 7WMain Duct Heater
AC220V / 192WDefrost Heater
H
E
A
T
E
R
PBN-4R-Sensor
PBN- 8F-Sensor
PBN-4D-SensorS
E
N
S
O
R
FRS(N)-
U20GA
FRS(N)-
U20FA
FRS(N)-
U20EA
FRS(N)-
U20DA
FRS(N)-
U20IA
Model Name
SpecificationItem
FRN-U20GAFRN-U20FAFRN-U20EAFRN-U20DAFRN-U20IAR-600a
FRS-U20GAFRS-U20FAFRS-U20EAFRS-U20DAFRS-U20IAR-1 4a
Model NameRefrigerant

1
4-1. Display
54
21Temp indication
Max
Medium
Max
Mid
Medium
Min
MinTemperature Chang
54
21Temp indication
Max
Medium
Max
Mid
Medium
Min
MinTemperature Change
1. “FRZ.TEMP” Button
1) Temperature control of Freezer compartment
2) 5 step mode of successive temperature mode.
) Initial mode by power input : “ ”
※Whenever pressing button, setting is repeated in the order of
Medium( ) →Medium Max(4) →Max(5) →Min(1) →Medium Min(2).
2. “REF.TEMP” button.
1) Temperature control of Refrigerator compartment
2) 5 step mode of successive temperature mode.
) Initial mode by power input : “ ”
※Whenever pressing button, setting is repeated in the order of
Medium( ) →Medium Max(4) →Max(5) →Min(1) →Medium Min(2).
INPUT CONTROL OBJECT
CONTENTS REMAR S
FRZ.TEMP, REF.TEMP Inner Control (Lamp-LED)
4-1-1. FRS(N)-U20IA
※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~ days.
Temperature adjustment button
for refrigerator compartment.
Temperature adjustment button
for freezer compartment.
4. OPERATION AND FUNCTIONS

14
1. Display control
2. “FREEZER SET” Button
1) Temperature control of freezer compartment
2) 7 step mode of successive temperature mode.
) 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℃).
INPUT CONTROL OBJECT
CONTENTS REMAR S
Front PCB button
FREEZER SET, REFRIGERATOR SET
SUPER FREEZER, SUPER REFRIGERATOR
RESET FILTER, WATER / ICE, ICE MAKER LOCK
,LOCK
FCP C-LED
. “SUPER FREEZER” Button
When this mode is chosen, the icon (FREEZER QUICK) is ON.
After six month, LED ONFILTER CHANGE ICON
DialICE MAKER LOCK ICON
DialLOCK ICON
DialWATER / CUBED ICE/ CRUSHED ICE ICON
Always ONFUZZY, DEODORIZER ICON
Dial
SUPER FREEZER,SUPER
REFRIGERATOR ICON
Initial mode : Freezer & Refrigerator set→
Medium (-19℃/4℃)
88 DISPLAY (SET TEMP.)
ControlFCP-LED
-21℃
Medium
Max 2
-18℃
Medium
Min 2
-19℃
Medium
-22℃
Max
-20℃-17℃-16℃
Temp
indication
Medium
Max 1
Medium
Min 1
Min
Temperature
Change
4-1-2. FRS(N)-U20DA / EA / FA / GA
Temperature adjustment button
for freezer compartment.
Super freezer
Temperature adjustment button
for refrigerator compartment.
Super Refrigerator
Lock button
Water filter reset Dispenser select button Ice maker lock button
Letters are indicated on 88 Display LED

15
CONTENTS REMAR S
4. “REFRIGERATOR SET” button.
1) Temperature control of Refrigerator compartment
2) 5 step mode of successive temperature mode.
) Initial mode by power input : “Medium (4℃)”
※Whenever pressing button, setting is repeated in the order of
Medium (4℃) →Medium Max ( ℃) →Max (2℃) →Min (6℃) →Medium Min (5℃).
2℃℃
4℃5℃6℃Temp indication
Max
Medium
Max
Mid
Medium
Min
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.
) 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.
) How to reset Filter information
①Push the “RESET WATER FILTER” button for seconds after change.
9. “LOCK” button
1) This button stops operation of different button.
①“LOCK” icon is on
②Press 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~ days.
Letters are indicated on 88 Display LED
REFERENCE : Please wait
for 2- seconds in order
to take final ice or drops
of water when taking out
cup from the pressing
switches after taking ice
or water.

16
1. Defrost Mode
INPUT CONTROL OBJECT
CONTENTS REMAR S
1. Defrosting Cycle
1. Comp
2. F-Fan
. R-Fan
4. D-Heater
Pre-Cool
Pause
Fan-Delay
Heater
Defrosting
Pre-Cool
1) Time : 50 minutes
2) Comp , F-fan : ON
R-fan : Control
D-HTR : OFF
) If F-sensor ≤-27℃, then Pre-Cool becomes. OFF
Heater
Defrosting
1) Comp, F-fan, R-fan : OFF
D-HTR : ON
2) Time limit
0 seconds : Heater is ON regardless of D-sensor
temperature right after defrosting start
0 minutes : in case of D1- Error
80 minutes : in normal control state
) If D-sensor ≥1 ℃, 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
4-2. Defrost Mode
2.The defrost mode start with the following conditions
1) Total operation time of comp. becomes : 6,8,10,……… 24 hours.
①Comp. operating rate : more 85%
②Total door open time : 2 minutes
(Any door, F or R open time is over 2 minutes.)
③Any error mode : R1, F1, D1, F , 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.
) 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.
. In providing initial power (or returning power failure)
If D-sensor temp. ≤.5℃, defrosting mode starts .

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

18
1. A/S Defrosting Mode (Heater defrost →Pause →Fan Delay)
INPUT CONTROL OBJECT
CONTENTS REMAR S
1. Defrosting Cycle
1. Comp
2. F-Fan
. R-Fan
4. D-Heater
Heater
Defrosting
1) Comp, F-fan, R-fan : OFF
D-HTR : ON
2) Time limit
0 seconds : Heater is ON regardless of D-sensor
temperature right after defrosting start
0 minutes : in case of D1-Error
80 minutes : in normal control state
) If D-sensor ≥1 ℃, 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
Pause
Fan-Delay
Heater
Defrosting
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
. 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 0 seconds.
(Check of defrosting current)
4- . c (Forced Defrosting) Mode
1. Fan voltage of control mode
INPUT CONTROL OBJECT
CONTENTS REMAR S
1. F-Sensor
2. R-Sensor 1. F-FAN, R-FAN, C-FAN
1 V1 V1 VVoltage
C-FANR-FANF-FANFAN
4-4. Fan Voltage of Control Mode
※Refer to the 5-4. (Fan Function )

19
It is linked with comp.
INPUT CONTROL OBJECT
CONTENTS REMAR S
1. Comp Louver Heater
1. Buzzer sounds if any button of Inner Control is pushed.
2. Buzzer sounds 4 times seconds after initial power input.
. Buzzer sounds for 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)
INPUT CONTROL OBJECT
CONTENTS REMAR S
1. Control (Inner or F-PCB) buttons
2. Door Switch
. Initial Power Input
Buzzer
4-5. Louver Heater Control
4-6. Buzzer or Alarm Control
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.)
. 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.
INPUT CONTROL OBJECT
CONTENTS REMAR S
1. Refrigerator door switch
2. Freezer door switch
. Home bar door switch
4. Dispenser switch
Lamp
4-7. Control of Interior Lights (FRS(N)-U20DA / EA / FA / GA)