Daewoo FRS-U20DD Series User manual

Refrigerator
S/M No: FRU54AD001
✔ Caution
In this manual, some parts can be changed for improving their performance without notice.
S o, If you need the lates t parts information, pleas e vis it and refer to P P L (P arts P rice List) ]
in S ervice Infromation C enter. ( http://svc.dwe.co.kr )
SEP. 2008.
Refrigerant Type
(R-134a)
FRS-U20DD.
FRS-U20ED.
FRN-U20DD.
FRN-U20ED.
FRN-U20DD.I
FRN-U20ED.I
FRS-U20FD.
FRS-U20GD.
FRN-U20FD.
FRN-U20GD.
FRN-U20FD.I
FRN-U20GD.I
Refrigerant Type
(R-600a)
Compressor Type
(Inverter)
Refrigerant Type
(R-134a)
Refrigerant Type
(R-600a)
Compressor Type
(Inverter)
FRS-U20DF.
FRS-U20EF.
FRN-U20DF.
FRN-U20EF.
FRN-U20DF.I
FRN-U20EF.I
FRS-U20FF.
FRS-U20GF.
FRN-U20FF.
FRN-U20GF.
FRN-U20FF.I
FRN-U20GF.I

2

3
2. EXTERNAL VIEWS
2-1. External Size ( U20DF./U20DG.. Series )

4
2-2. External Size ( U20FF./U20FG. Series )

5
2-3. Name of Each Parts
11. Wine rack (option)
12. Magic Cool Zone (option)
13. Refreshment Pocket (option)
6. Egg Case1. Freezer Pocket
10. Refrigerator pocket
9. Dairy Pocket4. Freezer Case 2
8. Vegetable Case 23. Freezer Case 1
7. Vegetable Case 12. Freezer Shelf
Refrigerator CompartmentFreezer Compartment
Full option models illustrated, features are model dependent.

6
3. SPECIFICATION
DC 13V / 1850 rpmRefrigerator Fan Motor
DC 13V / 2050 rpmFreezer Fan Motor
AC 250V, 10A, 77CFuse Temp. (Defrost)
E
L
E
C
T
R
I
C
P
A
R
T
PBN-43Defrost Sensor
S
E
N
S
O
R
PT-38Freezer Sensor
PBN-43Refrigerator Sensor
25W x 2EARefrigerator Lamp
25W x 1EAFreezer Lamp
DC 13V / 1100 rpmCondenser Fan Motor
AC 220V / 5WDispenser Heater
AC 220V / 10WHome Bar Heater
AC 220V / 5WWater Pipe Heater
AC 220V / 192WDefrost Heater
H
E
A
T
E
R
R-134a (190g)
R-600a or R-134a (Look for your rating label)Refrigerant
C
Y
C
L
E
C
O
O
L
I
N
G
R-600a (76g)Quantity
Fin TypeEvaporator
Fan Cooling SystemCondenser
Molecular Sieve XH-9Dryer
IDΦ0.7 ×T0.55 ×L2200Capillary Tube
115 / 117 / 115 / 117
324 Li
175 Li
518 Li
377 Li
227 Li
604 Li
U20DE./U20DG. / U20FE./U20FG.
113 / 115 / 113 / 115Weight (Kg)
356 LiRefrigerator
175 LiFreezer
531 LiTotal
ISO 15502
Storage
Volume
(Li)
377 Li
Refrigerator
227 LiFreezer
604 LiTotal
ISO 15502
Gross
Volume
(Li)
U20DD./U20DF. / U20FD./U20FF.Model Name
SpecificationItem

7
4-1. Display
4. OPERATION AND FUNCTION
1. Display control
2. “Freezer” button
1) Temperature control of freezer compartment
2) Initial power input : “Medium(-19C)”
- Every time you press the “Freezer” button, the setting temperature changes in
a circulating order of -19C(Medium) / -20C / -21C / -22C (Max) / -16C(Min)
/ -17C / -18C / -19C (Medium)
INPUT CONTROL OBJECT
CONTENTS REMARKS
Front PCB button
FREEZER SET, REFRIGERATOR SET
SUPER FREEZER, SUPER REFRIGERATOR
DISPENSER SELECT & FILTER RESET
KEY LOCK
FCP C-LED
After six month, LED ONFILTER CHANGE ICON
DialKEY LOCK ICON
Dial
WATER / CRUSHED ICE
/ CUBED ICE / ICE MAKER LOCK
Dial
SUPER FREEZER,SUPER REFRIGERATOR
ICON
Initial mode : Freezer & Refrigerator set
Medium (-19C / 4C)
88 DISPLAY (SET TEMP.)
ControlFCP-LED
3. “Refrigerator” button
1) Temperature control of refrigerator compartment
2) Initial power input : “Medium (4C)”
- Every time you press the “Refrigerator” button, the setting temperature changes in
a circulating order of 4C(Medium) / 3C / 2C(coldest) / 8C(warmest) / 7C
6C / 5C / 4C(Medium)

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CONTENTS REMARKS
- 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.
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.
4. “Super Freezer” button
When this button is pressed, the “QUICK” icon of freezer compartment is ON.
(Yon can stop this function manually by pressing the button one more time.)
5. “Super Refrigerator” button
When this button is pressed, the “QUICK” icon of refrigerator compartment is ON.
(Yon can stop this function manually by pressing the button one more time.)
6. “Dispenser” button
1) Dispenser select function
You can select water, crushed ice or cubed ice by pressing the “Dispenser” button
2) Ice maker lock function
If you don’t want to produce ice cubes, press the “Dispenser” button till the “ICE MAKER
LOCK” icon is turn on.
- Every time you press the “Dispenser” button, the icon changes in a circulating order of
WATER - CRUSHED ICE - CUBED ICE - ICE MAKER LOCK - WATER
- The dispenser doesn’t operate while door is open.
3) Filter reset function
- After 6-months from the power is connected to the refrigerator, the “FILTER CHANGE”
icon is light up.
- If you have changed the filter after 6-months of use or want to reset the filter display,
press and hold the “Dispenser (Filter Reset)” button 3 seconds or more and the “FILTER
CHANGE” icon will be turn off.
6. “Lock” button
1) If you want to lock other buttons, press the “Lock” button and “LOCK” icon will be turn on.
No buttons other than “Lock” button will be work.
2) To disable the lock function, press and hold the “Lock” button for 3 seconds or more.

9
1. Defrost Mode
INPUT CONTROL OBJECT
CONTENTS REMARKS
1. Defrosting Cycle
1. Comp
2. F-Fan
3. R-Fan
4. D-Heater
Pre-Cool
Pause
Fan-Delay
Heater
Defrosting
Pre-Cool
; Compressor runs (to sub-cool the freezer compartment prior to
the defrost heater switch on) for 50 minutes or until F-sensor tem-
perature reaches -27C whichever comes first.
(Refrigerator compartment is controlled normal condition)
Heater
Defrosting
1) Defrost heater is switch on until D-sensor temperature
reaches 13C.
(Compressor, F-Fan, R-Fan is off)
2) Defrost heater on time.
- 30 seconds : Heater is ON regardless of D-sensor
temperature the moment when heater is on.
- 30 minutes : In case of “D1” error (D-sensor malfunction)
- 80 minutes : in normal control state, the maximum on time.
Pause
After the defrost heater is switched off, Compressor does not run
within 7 minutes.
( F-fan, R-fan, Heater etc. : OFF)
Fan-Delay
After defrost, when the first compressor turn on, F-Fan start to run
after 5 minutes from compressor turn on.
4-2. Defrost Mode ( None Inverter Compressor Models )
2.The defrost mode start with the following conditions
1) Total operation time of compressor becomes : 6, 8, 10, ……… , 24 hours.
a. Compressor operating rate (If RT-sensor temperature is below 35 C) : more 85% by 2 hours.
b. Total door open time : 2 minutes
(Any door, F or R open time is over 2 minutes.)
c. 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 case of initially power connected (or power reset)
If D-sensor temperature below 3.5 degree, defrosting mode starts .

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CONTENTS REMARKS
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?
EndDefrosting start
Comp. operating time
is over 2 hours?
Is there
any error code?
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
Room Temp is over 35C ? YES

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1. Defrost Mode
INPUT CONTROL OBJECT
CONTENTS REMARKS
1. Defrosting Cycle
1. Comp
2. F-Fan
3. R-Fan
4. D-Heater
Pre-Cool
Pause
Fan-Delay
Heater
Defrosting
Pre-Cool
; Compressor runs (to sub-cool the freezer compartment prior to
the defrost heater switch on) for 50 minutes or until F-sensor tem-
temperature reaches -27C whichever comes first.
(Refrigerator compartment is controlled normal condition)
Heater
Defrosting
1) Defrost heater is switch on until D-sensor temperature
reaches 13C.
(Compressor, F-Fan, R-Fan is off)
2) Defrost heater on time.
- 30 seconds : Heater is ON regardless of D-sensor
temperature the moment when heater is on.
- 30 minutes : In case of “D1” error (D-sensor malfunction)
- 50 minutes : in normal control state, the maximum on time.
Pause
After the defrost heater is switched off, Compressor does not run
within 7 minutes.
( F-fan, R-fan, Heater etc. : OFF)
Fan-Delay
After defrost, when the first compressor turn on, F-Fan start to run
after 5 minutes from compressor turn on.
4-3. Defrost Mode ( Inverter Compressor Models )
2.The defrost mode start with the following conditions
1) Total operation time of compressor becomes : 10, 12, 14, ……… , 24 hours.
a. Compressor operating rate (If RT-sensor temperature is below 35 C) : more 85% by 2 hours.
b. Total door open time : 2 minutes
(Any door, F or R open time is over 2 minutes.)
c. 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 case of initially power connected (or power reset)
If D-sensor temperature below 3.5 degree, defrosting mode starts .

12
CONTENTS REMARKS
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 10 hours?
EndDefrosting start
Comp. operating time
is over 2 hours?
Is there
any error code?
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
Room Temp is over 35C ? YES

13
1. A/S Defrosting Mode (Heater defrost - Pause - Fan Delay)
INPUT CONTROL OBJECT
CONTENTS REMARKS
1. Defrosting Cycle
1. Comp
2. F-Fan
3. R-Fan
4. D-Heater
Pause
Fan-Delay
Heater
Defrosting
2. How to start
1) Under “Lock” condition,
press and hold “Freezer” button and press “Refrigerator” button 5 times simultaneously.
3. How to proceed
1) Skip the pre-cool mode. (Others are same as normal defrosting)
2) Heater is ON for 30 seconds, regardless of D-sensor temp. the moment when the defrost
heater is switch on.
(Check of defrosting current)
4-4. Forced Defrosting Mode
1. Fan voltage of control mode
INPUT CONTROL OBJECT
CONTENTS REMARKS
1. F-Sensor
2. R-Sensor 1. F-FAN, R-FAN, C-FAN
13 V13 V13 VVoltage
C-FAN
(Condenser)
R-FAN
(Refrigerator compartment)
F-FAN
(Freezer compartment)
4-5. Fan Motor Voltage of Control Mode
※Refer to the 5-4. (Fan Function )
Heater
Defrosting
1) Defrost heater is switch on until D-sensor temperature
reaches 13C.
(Compressor, F-Fan, R-Fan is off)
2) Defrost heater on time.
●30 seconds : Heater is ON regardless of D-sensor
temperature the moment when heater is on.
●30 minutes : In case of “D1” error (D-sensor malfunction)
●50 minutes (Inverter Compressor Models)
: in normal control state, the maximum on time.
●80 minutes (None Inverter Compressor Models)
: in normal control state, the maximum on time.
Pause
After the defrost heater is switched off, Compressor does not run
within 7 minutes.
( F-fan, R-fan, Heater etc. : OFF)
Fan-Delay
After defrost, when the first compressor turn on, F-Fan start to run
after 5 minutes from compressor turn on.

14
1. Buzzer sounds 3 times after initial power input.
2. Buzzer sounds 1 times, in case of A/S forced defrost mode.
3. Buzzer sounds 1 time, in case of pull down mode.
4. If door is left open, buzzer sounds after every 1 minutes for 5 minutes (Door open alarm)
INPUT CONTROL OBJECT
CONTENTS REMARKS
1. Control buttons
2. Door Switch
3. Initial Power Input
Buzzer
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.)
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.
INPUT CONTROL OBJECT
CONTENTS REMARKS
1. Refrigerator door switch
2. Freezer door switch
3. Home bar door switch
4. Dispenser switch
Lamp
4-7. Control of Interior Lights

15
1. How to start
1) Under “Lock” condition,
Press and hold “Refrigerator” button and press “Dispenser” button 5 times simultaneously.
2. How to control
1) All other electrical components are OFF except for F-Fan & R-Fan
2) Fan Control
Door opened - Fan ON
Door closed - Fan OFF.
3. How to exit
1) Under “Demonstration” mode,
Press and hold “REF Set” button and press “Dispenser” button 5 times simultaneously.
2) or power reset.
INPUT CONTROL OBJECT
CONTENTS REMARKS
1. “Refrigerator” & “Dispenser” Button Comp
F/R-Fan
Heater
4-8. Demonstration

16
- If the temperature of refrigerator compartment is weak or insufficient,
you can compensate the on/off temperature by cutting jump wire of main PCB.
(temperature down)
INPUT CONTROL OBJECT
CONTENTS REMARKS
Main PCB Resistance of R-sensor
4-9. Temperature compensation (Refrigeration compartment)
R
R- -Sensor Sensor
J2
R36
R37
R38 J1
Refer to the 5-2.
(Function of each sensor)
J1
J2
< Location of R-sensor at Main-PCB >
< Circuit diagram of R-sensor>
- If need to compensate
Compensation
(weak-cool)
R36 + R37 + R38R36 + R37R36Resistance
cut--J2
cutcut-J1
3C
down
1.5C
down
Normal
condition

17
4-10. Error Display
1. How to start
1) Under “Lock” condition,
Press and hold “Freezer” button and press “Super Freezer” button 5 times simultaneously.
2) The front CLED displays as the right diagram shows
( [Ex.] Time Display of 00 03 signifies 3 minutes of power on time.)
3) Every time you press “Freezer” button, the following value is displayed successively.
①Refrigerator operating time. (From power is connected)
②F-Sensor temperature.
③D-Sensor temperature.
④R-Sensor temperature.
⑤RT-Sensor temperature.
⑥P Factor display (Refer to water supply mode of automatic icemaker)
⑦Filter 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 exit
1) Press “Lock” button 1 time.
2) It exit automatically in 4 minutes after from the start.
3. All the error Codes are reset if they turn to be normal.
4. Error code
INPUT CONTROL OBJECT
CONTENTS REMARKS
Temperature Control Buttons 88 Display CLED
Forced defrost mode display
D2
Full-Down mode display
Co
Return after defrosting : abnormal or defective
F3
Cycle : abnormal or defective
C1
Full ice switch : error
Eu
Drop the ice while Et
EA
Micro switch : error
ES
Water supply : error
Eg
Horizontal switch : error
Et
Flow sensor : defective
EF
I-sensor : disconnection (“Lo”), short (“Hi”)
EI
Homebar door switch : defective
dH
F-Door switch : defective
dF
R-Door switch : defective
dr
D-sensor : disconnection (“Lo”), short (“Hi”)
d1
RT-sensor : disconnection (“Lo”), short (“Hi”)
rt
R-sensor : disconnection (“Lo”), short (“Hi”)
r1
F-sensor : disconnection (“Lo”), short (“Hi”)
F1
CONTENTSERROR CODE

18
1) “F1” error
Cause : F-sensor disconnection or short
Check point : Measure the resistance between both terminals after separating 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 terminated automatically.
CONTENTS REMARKS
2) “R1” error
Cause : R-sensor disconnection or short
Check point : Measure the resistance between both terminals after separating 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 F-sensor is normal, the error is terminated automatically.
7) “F3” error
Cause : in case defrosting return is done by time limit of 50 min
Check point : Measure the resistance between both terminals of the defrost heater.
(Assembled with evaporator)
If the resistance is ∞ohm (disconnected) or 0 ohm (short) change the
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 F-sensor is normal, the error is terminated automatically.
A
4) “d1” error
Cause : D-sensor disconnection or short (full down)
Check point : Measure the resistance between both terminals after separating 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 -5C
Check point : Refrigerant leakage.
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 13C, the mode is terminated automatically.
Refer to the 4-3. .
5. Control way of Error (if any)

19
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.
CONTENTS REMARKS
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
13) “Ea” error
Cause : Malfunction of ice drop motor.
Check the motor by pushing test switch.
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.
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

20
1. Dial Function Summary
- All the modes are started “Lock” condition (except “Reset water filter” mode)
CONTENTS
Push the ‘‘Super Freezer’’ for 15 seconds
Temperature Value
(CELSIUS <-> FAHRENHEIT)
“Freezer”+ “Super Freezer” 5 times
Error display
“Refrigerator” + “Freezer” + “Dispenser” 5 times
Pull-Down
“Refrigerator” + “Dispenser” 5 times
Demonstration function
Press “Dispenser” button for 3 seconds
Reset water filter
“Freezer” + “Refrigerator” 5 times
Forced Defrosting
4-11. Summary of Function and additional information
2. Filter Information Check
1) Filter exchange information : Record a real time from the date of power input.
- The filter is normal for 6 months after the first plug in.
- When the time comes to change or reset, press the ‘Dispenser’ button for 3 seconds.
2) How to check the filter running time
[Step 1]Press the ‘Lock’ button.
[Step 2] Press ‘Super Freezer’ 5 times while pushing the ‘Freezer’ button.
[Step 3] Push ‘Freezer’ button 6times. ( Fi-Lt display )
[Step 4] Remaining time is display if dispenser button pressed.
( ex, 40 : 12 means that 4012 minutes remains until the exchange.
[Step 5] Reset : Push ‘Lock’ button or it is automatically reset after 4 minutes.
Dispenser button
3. Adjust the amount of water
; Function to adjust the amount of water supply.
( Step 1 and Step 2 is the same above ‘How to check the Filter running time.’
[Step 1] Press the ‘Lock’ button.
[Step 2] Press ‘Super Freezer’ 5 times while pushing the ‘Freezer’ button.
[Step 3] Press ‘Freezer’ button 5 times until display P100 on front LED.
[Step 4] Adjust the amount of water. ( Default setting is P100, it means 86cc water supply. )
When need more water supply : Press ‘Super Refrigerator’ button
- P101 ( 87cc ), P102 ( 88cc), P103 ( 89cc ) ……………
When need less water supply : Press ‘Refrigerator’ button
- P99 ( 85cc ), P98 ( 84cc), P97 ( 83cc ) ………………..
[Step 5] Reset : Push ‘Lock’ button or automatically reset after 4 minutes.