In this manual, s ome parts can be changed for improving their performa nce without notice.
S o, If you need the latest parts informa tion, please visit and refer to P PL (P arts P rice L ist) ]
in S ervice Infromation C enter. ( http://svc.dwe.co. kr )
SEP. 2008.
2
2. EXTERNAL VIEWS
2-1. External Size ( U20DF./U20DG.. Series )
3
2-2. External Size ( U20FF./U20FG. Series )
4
2-3. Name of Each Parts
Full option models illustrated, features are model dependent.
Refrigerator CompartmentFreezer Compartment
6. Egg Case1. Freezer Pocket
7. Vegetable Case 12. Freezer Shelf
8. Vegetable Case 23. Freezer Case 1
9. Dairy Pocket4. Freezer Case 2
10. Refrigerator pocket
11. Wine rack (option)
12. Magic Cool Zone (option)
13. Refreshment Pocket (option)
5
3. SPECIFICATION
SpecificationItem
C
O
O
L
I
N
G
ISO 15502
Gross
Volume
(Li)
ISO 15502
Storage
Volume
(Li)
C
Y
C
L
E
Refrigerator
U20DD./U20DF. / U20FD./U20FF.Model Name
604 LiTotal
227 LiFreezer
377 Li
531 LiTotal
175 LiFreezer
356 LiRefrigerator
113 / 115 / 113 / 115Weight (Kg)
R-600a or R-134a (Look for your rating label)Refrigerant
R-600a (76g)Quantity
Fan Cooling SystemCondenser
Molecular Sieve XH-9Dryer
IDΦ0.7 ×T0.55 ×L2200Capillary Tube
U20DE./U20DG. / U20FE./U20FG.
604 Li
227 Li
377 Li
518 Li
175 Li
324 Li
115 / 117 / 115 / 117
R-134a (190g)
Fin TypeEvaporator
H
E
A
T
E
R
S
E
N
S
O
R
E
L
E
C
T
R
I
C
P
A
R
T
AC 220V / 192WDefrost Heater
AC 220V / 5WDispenser Heater
AC 220V / 5WWater Pipe Heater
AC 220V / 10WHome Bar Heater
PBN-43Defrost Sensor
PT-38Freezer Sensor
PBN-43Refrigerator Sensor
AC 250V, 10A, 77CFuse Temp. (Defrost)
DC 13V / 2050 rpmFreezer Fan Motor
DC 13V / 1850 rpmRefrigerator Fan Motor
DC 13V / 1100 rpmCondenser Fan Motor
25W x 1EAFreezer Lamp
25W x 2EARefrigerator Lamp
6
4. OPERATION AND FUNCTION
4-1. Display
INPUTCONTROL OBJECT
Front PCB button
FREEZER SET, REFRIGERATOR SET
SUPER FREEZER, SUPER REFRIGERATOR
DISPENSER SELECT & FILTER RESET
KEY LOCK
FCP C-LED
CONTENTS REMARKS
1. Display control
ControlFCP-LED
88 DISPLAY (SET TEMP.)
SUPER FREEZER,SUPER REFRIGERATOR
ICON
WATER / CRUSHED ICE
/ CUBED ICE / ICE MAKER LOCK
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)
3. “Refrigerator” button
1) Temperature control of refrigerator compartment
2) Initial power input : “Medium (4C)”
Initial mode : Freezer & Refrigerator set
Medium (-19C / 4C)
Dial
Dial
DialKEY LOCK ICON
After six month, LED ONFILTER CHANGE ICON
- 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)
7
CONTENTS REMARKS
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.
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.
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.
- 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.
2.The defrost mode start with the following conditions
Pre-Cool
; Compressor runs (to sub-cool the freezer compartment prior to
the defrost heater switch on) for 50 minutes or until F-sensor 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)
- 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.
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 .
9
CONTENTS REMARKS
4. Flow Chart of Defrosting Start
YES
YES
Start
Comp. operating time
is over 2 hours?
YES
Total time is
over 60 hours?
NO
Comp. operating time
is over 24 hours?
NO
Comp. operating time
is over 6 hours?
YES
NO
NO
YES
YES
YES
Is there
any error code?
Room Temp is over 35C ?
NO
Comp. operating rate
is more 85%?
NO
Total door open
time is over 2 min?
NO
EndDefrosting start
YES
10
4-3. Defrost Mode ( Inverter Compressor Models )
INPUTCONTROL OBJECT
1. Defrosting Cycle
CONTENTS REMARKS
1. Defrost Mode
1. Comp
2. F-Fan
3. R-Fan
4. D-Heater
Pre-Cool
Heater
Defrosting
Pause
Fan-Delay
2.The defrost mode start with the following conditions
Pre-Cool
; Compressor runs (to sub-cool the freezer compartment prior to
the defrost heater switch on) for 50 minutes or until F-sensor temtemperature 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.
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 .
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.
1. Comp
2. F-Fan
3. R-Fan
4. D-Heater
Pause
Fan-Delay
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)
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.
4-5. Fan Motor Voltage of Control Mode
INPUTCONTROL OBJECT
1. F-Sensor
2. R-Sensor
CONTENTS REMARKS
1. F-FAN, R-FAN, C-FAN
1. Fan voltage of control mode
F-FAN
(Freezer compartment)
※ Refer to the 5-4. (Fan Function )
(Refrigerator compartment)
R-FAN
13
C-FAN
(Condenser)
13 V13 V13 VVoltage
4-6. Buzzer or Alarm Control
INPUTCONTROL OBJECT
1. Control buttons
2. Door Switch
3. Initial Power Input
CONTENTS REMARKS
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)
4-7. Control of Interior Lights
INPUTCONTROL OBJECT
1. Refrigerator door switch
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.)
Buzzer
Lamp
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.
14
4-8. Demonstration
INPUTCONTROL OBJECT
1. “Refrigerator” & “Dispenser” Button
CONTENTS REMARKS
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.
Comp
F/R-Fan
Heater
15
4-9. Temperature compensation (Refrigeration compartment)
INPUTCONTROL OBJECT
Main PCB
Resistance of R-sensor
CONTENTS REMARKS
- 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)
- If need to compensate
Compensation
(weak-cool)
1.5C
down
R36 + R37 + R38R36 + R37R36Resistance
condition
< Circuit diagram of R-sensor>
Sensor
RR--Sensor
Normal
3C
down
cutcut-J1
cut--J2
Refer to the 5-2.
(Function of each sensor)
R36
R37
R38
J2
J1
< Location of R-sensor at Main-PCB >
J1
J2
16
4-10. Error Display
INPUTCONTROL OBJECT
Temperature Control Buttons88 Display CLED
CONTENTS REMARKS
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.
① Refrigerator operating time. (From power is connected)
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 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
F1
r1
d1
dr
dF
dH
EI
EF
Et
Eg
ES
EA
Eu
C1
F3
Co
D2
CONTENTSERROR CODE
F-sensor : disconnection (“Lo”), short (“Hi”)
R-sensor : disconnection (“Lo”), short (“Hi”)
rt
RT-sensor : disconnection (“Lo”), short (“Hi”)
D-sensor : disconnection (“Lo”), short (“Hi”)
R-Door switch : defective
F-Door switch : defective
Homebar door switch : defective
I-sensor : disconnection (“Lo”), short (“Hi”)
Flow sensor : defective
Horizontal switch : error
Water supply : error
Micro switch : error
Drop the ice while Et
Full ice switch : error
Cycle : abnormal or defective
Return after defrosting : abnormal or defective
Full-Down mode display
Forced defrost mode display
17
CONTENTS REMARKS
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 CN15
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.
2) “R1” error
Cause : R-sensor disconnection or short
Check point : Measure the resistance between both terminals after separating CN14
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.
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.
of the Main PCB. (Refer to the 5-2.)
of the Main PCB. (Refer to the 5-2.)
A
4) “d1” error
Cause : D-sensor disconnection or short (full down)
Check point : Measure the resistance between both terminals after separating CN15
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.
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.
If the resistance is ∞ ohm (disconnected) or 0 ohm (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 13C, the mode is terminated automatically.
Refer to the 4-3. .
of the Main PCB. (Refer to the 5-2.)
(Assembled with evaporator)
18
CONTENTS REMARKS
9) “EI”ERROR
Cause : I-SENSOR disconnection / short
Check point : Measure the resistance between both terminals after separating CN11
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)
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.
of the Main PCB. (Refer to the 5-2.)
The number of pulse signal is below 10 by 1 sec during water supply.
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
19
4-11. Summary of Function and additional information
CONTENTS
1. Dial Function Summary
- All the modes are started “Lock” condition (except “Reset water filter” mode)
Forced Defrosting
Reset water filter
Demonstration function
Pull-Down
Error display
Temperature Value
(CELSIUS <-> FAHRENHEIT)
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.
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.’
“Freezer” + “Refrigerator” 5 times
Press “Dispenser” button for 3 seconds
“Refrigerator” + “Dispenser” 5 times
“Refrigerator” + “Freezer” + “Dispenser” 5 times
“Freezer”+ “Super Freezer” 5 times
Push the ‘‘Super Freezer’’ for 15 seconds
Dispenser button
[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