Daewoo FRU-541, FRN-U20IV, FRU-579, FRU-571, FRU-54B Service Manual

...

Refrigerator

S/M No:

Caution

In this manual, some parts can be changed for improving their performance without notice. So, If you need the latest parts information, please visit and refer to PPL (Parts Price List) ] in Service Infromation Center. ( http://svc.dwe.co.kr )

Aug. 2011.

Refrigerant Type (R-134a)

FRS-U20IV..

FRN-U20IV.. FRN-U20BV..

FRS-U20BV..

FRS-U20DV..

FRN-U20DV.. FRN-U20FV..

FRS-U20FV..

Refrigerant Type (R-600a)

Refrigerant Type (R-134a)

Refrigerant Type (R-600a)

1. Specification

Dispenser

H/Bar

Total

Freezer

Refrigerator

Total

Freezer

Refrigerator

Width (mm)

Depth (mm)

Height (mm)

Refrigerant Type

Refrigerant Charge

Evaporator Type

Condenser Type

Dryer

Capillary Tube

Defrost Heater

Dispenser Heater

Water Pipe Heater

Main Duct Heater

Home Bar Heater

Defrost Sensor

Freezer Sensor

Refrigerator Sensor

Fuse Temp. (Defrost)

Freezer Fan Motor

Refrigerator Fan Motor

Condenser Fan Motor

Freezer Lamp

Refrigerator Lamp

377

227

356

AC 220V / 10W

AC 220V / 7W

AC 220V / 5W

175

531

FRU-54VF..

U20FV..

604618

U20DV..

U20BV..

Electronic Part

Heater

Sensor

Feature

104

354

FRU-57VB.. FRU-54VD..

Cooling Cycle

Weight (kg)

Gross Vol.

(ISO 15502)

Storage Vol. (ISO 15502)

Diemension

Factory No.

Buyer No.

201

618

241

377

555

U20IV..

FRU-57VI..

Molecular Sieve xH-9

104

Fan Cooling System

Fin Type

531

604

227

377377

241

117

356354

555

175201

AC 250V, 10A, 77C

PT-38

903

730.5

1790

R-600a or R-134a

AC 220V / 192W

115

PBN-43

ID0.7 x T0.55 x L2200

SPECIFICATIONS

25W x 2EA

25W x 1EA

DC 13V, 1100rpm

DC 13V, 1850rpm

PBN-43

76g or 190g

DC 13V, 2050rpm

2. External Size

SPECIFICATIONS

3. Interior Parts

3-1. Basic Models

SPECIFICATIONS

1) Freezer Pocket

2) Freezer Shelf

3) Freezer Lamp ( 25W x 1ea )

4) Ice Tray

5),6) Freezer Case

7) Refrigerator Lamp ( 25W x 2ea )

8) Refrigerator Shelf

9) Egg Tray

10), 11) Refrigerator Case

12) Refreshment Pocket

3-2. Dispenser Models (* Homebar is option )

1) Water/Ice Dispenser

2) Freezer Pocket

3) Ice Storage Case

4) Freezer Lamp ( 25W x 1ea )

FreezerShelf

6),7) Freezer Case

8) Refrigerator Lamp ( 25W x 2ea )

9) Refrigerator Shelf

10) Egg Tray

11), 12) Refrigerator Case

13) Refreshment Pocket

14) Homebar (*Option)

1. Display ( Inner Basic Model )

a Temperature adjustment button for freezer compratment

b Temperature adjustment button for refrigerator compratment

2. Display Control

FUNCTIONS ( DISPLAY_Inner Basic Model )

FCP Cotrol

Temp. Display (Set Temp.) Initial Mode : Freezer / Refrigerator set medium ( 3 / 3 )

3. FRZ. SET button

1) Temperature control of freezer compartment

2) Initial power plug in : Medium ( 3 )

- Every time you press the FRZ. SET button, the setting temperature changes below order.

4. REF. SET button

1) Temperature control of refrigerator compartment

2) Initial power plug in : Medium ( 3 )

- Every time you press the REF. SET button, the setting temperature changes below order.

1. Display ( Basic Model )

a Temperature adjustment button for freezer compratment

b Super(Quick) freezer compartment button

c Super(Quick) refrigerator compartment button

d Temperature adjustment button for refrigerator compratment

2. Display Control

FUNCTIONS ( DISPLAY_Basic Model )

FCP Cotrol

Temp. Display (Set Temp.) Initial Mode : Freezer / Refrigerator set medium ( -19C / 4C)

3. FRZ. SET button

1) Temperature control of freezer compartment

2) Initial power plug in : Medium ( -19C )

- Every time you press the FRZ. SET button, the setting temperature changes below order.

4. SUPER FRZ. Button

When this button press, the QUICK and Speed icon is flicker 6 times and keep ON.

( By pressing the SUPER FRZ. Button again you can stop this function. )

5. REF. SET button

1) Temperature control of refrigerator compartment

2) Initial power plug in : Medium ( 4C )

- Every time you press the REF. SET button, the setting temperature changes below order.

6. SUPER REF. Button

When this button press, the QUICK and Speed icon is flicker 6 times and keep ON.

( By pressing the SUPER REF. Button again you can stop this function. )

SUPER FRZ, SUPER REF. Icon Button

1. Display ( Dispenser Type )

a Temperature adjustment button for freezer compratment

b Super(Quick) freezer compartment button

c Reset water filter button after exchanging the filter

d Dispenser selction button. ( Water / Cubed ice )

FUNCTIONS ( DISPLAY_Dispenser Model )

e Ice maker lock button

f Children lock button ( Hold 3 sceconds )

g Temperature adjustment button for refrigerator compratment

h Super(Quick) refrigerator compartment button

2. Display Control

3. FRZ. SET button

1) Temperature control of freezer compartment

2) Initial power plug in : Medium ( -19C )

- Every time you press the FRZ. SET button, the setting temperature changes below order.

4. SUPER FRZ. Button

When this button press, the QUICK and Speed icon is flicker 6 times and keep ON.

FCP Cotrol

Temp. Display (Set Temp.)

SUPER FRZ, SUPER REF. Icon

WATER / CUBED ICE

KEY LOCK ICON

FILTER CHANEGE LED AFTER 6 Month, LED ON

Initial Mode : Freezer / Refrigerator set medium ( -19C / 4C)

Button

( By pressing the SUPER FRZ. Button again you can stop this function. )

5. REF. SET button

1) Temperature control of refrigerator compartment

2) Initial power plug in : Medium ( 4C )

- Every time you press the REF. SET button, the setting temperature changes below order.

6. SUPER REF. Button

When this button press, the QUICK and Speed icon is flicker 6 times and keep ON.

( By pressing the SUPER REF. Button again you can stop this function. )

7. RESET WATER FILTER

After 6 month of first power input, 'Change Filter Icon' is on. When the time comes to change follow the steps.

1) Push the Lock button.

2) Push the 'Filter Reset' button for 3 seconds. Then 'Change Filter'icon is off.

8. WATER/ICE select

FUNCTIONS ( DISPLAY_Dispenser Model )

1) WATER / CUBED ICE mode available.

2) Every the button press, the order is WATER - CUBED ICE

3) The initial mode is WATER.

9. ICE MAKER LOCK

1) Press the 'Dispenser' button continue. ( Press again, the mode is OFF. )

2) When cleaning the ice storage case or when not use for a long period of time.

9. LOCK button

1) When lock the other buttons, press this button and LOCK icon is active.

( In this mode other button is unable except LOCK button.)

2) To unlock, push the button again.

< 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.

: The actual inner temperature varies depending on the frood status, as the indicated setting temperature is a target

tem

erature, not actual temperautre within refrigerator.

p, p g

1. Freezer Compartment Control

1) Adjust by the pushing the FRZ.SET button.

2) Compressor & Freezer Fan controlled by each mode ON/OFF point.

3) Freezer Compartment ON/OFF Difference : 2C

- MEDIUM OFF point : -19C

- When Room Temperature (RT) is below 13C, Freezer sensor OFF point 2C up ( so, MEDIUM OFF : -17C )

4) Control Temperature Point in Each Mode

FUNCTIONS ( TEMPERATURE CONTROL )

Initially On 1st Press 2nd Press 3rd Press 4th Press

Sensor On -14.0 -15.5 -17.5 -9.0 -12.0 Sensor Off -16.0 -17.5 -19.5 -11.0 -14.0 Sensor On -12.0 -13.5 -15.5 -7.0 -10.0

Sensor Off -14.0 -15.5 -17.5 -9.0 -12.0

Min

Medium

Min

Division

345Display

Normal

RT <= 13C

Control

Medium

Max

Temperature

Medium

2. Refrigerator Compartment Control

1) Adjust by the pushing the REF.SET button.

2) Refrigerator Fan controlled by each mode ON/OFF point.

3) Freezer Compartment ON/OFF Difference : 0.5C

- MEDIUM OFF point : 4.2C

- When Room Temperature (RT) is below 13C, Refrigerator sensor OFF point 2C up ( so, MEDIUM OFF : 6.2C )

4) Control Temperature Point in Each Mode

Initially On 1st Press 2nd Press 3rd Press 4t h P ress

Sensor On 4.7 3.7 2.7 6.7 5.7 Sensor Off 4.2 3.2 2.2 6.2 5.2 Sensor On 6.7 5.7 4.7 8.7 7.7 Sensor Off 6.2 5.2 4.2 8.2 7.2 Sensor On 11.2 10.2 9.2 13.2 12.2 Sensor Off 4.2 3.2 2.2 6.2 5.2 Sensor On 13.2 12.2 11.2 15.2 14.2 Sensor Off 6.2 5.2 4.2 8.2 7.2

Division

Display 2

Temperature Medium

Medium

Max

Max Min

Medium

Min

345

Normal

RT <= 13C

Weak refrigeration Weak refrigeration

& RT <= 13C

1. Freezer Compartment Control

1) Adjust by the pushing the FRZ.SET button.

2) Compressor & Freezer Fan controlled by each mode ON/OFF point.

3) Freezer Compartment ON/OFF Difference : 2C

- MEDIUM OFF point : -19C

- When Room Temperature (RT) is below 13C, Freezer sensor OFF point 2C up ( so, MEDIUM OFF : -17C )

4) Control Temperature Point in Each Mode

FUNCTIONS ( TEMPERATURE CONTROL )

Initially On 1st Press 2nd Press 3rd Press 4th Press 5th Press 6th Press

Display

-19 -20

Division

Temperature

-18-21 -22

-16 -17

6) SUPER FRZ. (QUICK) Mode

- In this mode, Compressor & Freezer Fan motor is on unconditionally for 150min. ( free of freezer sensor )

Freezer Sensor

Freezer Fan On/Off

SUPER FRZ. Start ( SUPER FRZ. MODE )

NORMAL MODE Start

150MIN

Sensor On -14.8 -15.8 -16.8 -17.8 -11.8 -12.8 -13.8 Sensor Off -16.8 -17.8 -18.8 -19.8 -13.8 -14.8 -15.8 Sensor On -12.8 -13.8 -14.8 -15.8 -9.8 -10.8 -11.8

Sensor Off -14.8 -15.8 -16.8 -17.8 -11.8 -12.8 -13.8

Normal

RT <= 13C

Medium

Medium Max

Max

Medium Min

Control

Min

2. Refrigerator Compartment Control

1) Adjust by the pushing the REF.SET button.

LOW - MEDIUM LOW - MEDIUM - MEDIUM MAX - MAX

2) Refrigerator Fan controlled by each mode ON/OFF point.

3) Refrigerator Compartment ON/OFF Difference : 0.5C

- MEDIUM OFF point : 5.2C

- When Room Temperature (RT) is below 13C, Refrigerator sensor OFF point 2C up ( so, MEDIUM OFF : 7.2C )

4) Weak Cooling Prevention Function

- This funtion is free of Freezer sensor.

- When refrigerator compartment reaches the Fan OFF point, the Fan is OFF.

and then Compressor controlled by Freezer sensor.

- Weak cooling temperautre is + 7C in each sensor OFF temperature.

- Weak cooling terminate temperautre is same as each sensor OFF temperature.

6) Control Temperature Point in Each Mode

FUNCTIONS ( TEMPERATURE CONTROL )

Initially On 1st Press 2nd Press 3rd Press 4th Press 5th Press 6th Press

Division

7) SUPER REF. (QUICK) Mode : This mode runs for 40 minutes.

- Until the sensor reaches the Excess Refrigeration OFF point ( -7C), Refrigerator Fan and compressor is ON.

- Until the QUICK Mode ends, the appliance runs with MAX dial mode.

- After QUICK Mode ( about 40 mins ) the normal mode start.

Freezer Sensor

Excess Refrigeration OFF point

ON/OFF MAX MODE

NORMAL MODE Start

QUICK MODE (40MIN )

Sensor On 5.7 4.7 3.7 9.7 8.7 7.7 6.7 Sensor Off 5.2 4.2 3.2 9.2 8.2 7.2 6.2 Sensor On 7.7 6.7 5.7 11.7 10.7 9.7 8.7 Sensor Off 7.2 6.2 5.2 11.2 10.2 9.2 8.2 Sensor On 12.2 11.2 10.2 16.2 15.2 14.2 13.2 Sensor Off 5.2 4.2 3.2 9.2 8.2 7.2 6.2 Sensor On 14.2 13.2 12.2 18.2 17.2 16.2 15.2 Sensor Off 7.2 6.2 5.2 11.2 10.2 9.2 8.2

Medium

Normal

Weak refrigeration

RT <= 13C

Weak refrigeration

& RT <= 13C

Display

Temperature Medium Min

658

Medium Max Max

Min

1. When Defrost Mode start?

; When total Compressor runnig time becomes at 6, 8, 10, …, 24hours.

- The compressor runing rate is over 85% every 2 hours.

- Door opening time is over 2 minutes ( Each Freezer / Refrigerator door )

- Total compressor running time ( on time + off time ) is 60hours.

- Any error happens. ( R1, F1, D1, F3, RT-Sensor, C1, Door switch etc. )

( But, F3 error happens then defrost mode start without Pre-cool )

FUNCTIONS ( Defrost Mode )

Compressor runing

Start

Total appiance runing

Yes

Compressor runing

Any error happens

Room temperature is

Compressor runing rate is

over 85% every 2 hours

Door open ( each

End

Yes

Defrost mode start

Yes

2. Normal Defrost Mode

FUNCTIONS ( Defrost Mode )

PRECOOL

HEATER

DEFROTING

PAUSE

FAN DELAY

1) PRECOOL

- Compressor runs ( to cool down the freezer compartment prior to heater switch on ) for 50minutes or until Freezer sensor temperature reaches -27C

2) HEATER DEFROSTING

- Defrost heater is switch on until Defrost Sensor temperature reaches 13C.

- Heater operation time ; 30 seconds - Heater is ON free of Defrost Sensor. ; 30 minutes - When Defrost Sensor is malfunction. ( D1 error ) ; 80 minutes - Heater maximum operation time. ( F3 error )

3) PAUSE

- After Defrost Heater switch OFF, Compressor dosen't run within 7 minutes.

4) FAN DELAY

- Freezer & Refrigerator fan switch on after 5miunuts' cmopressor running.

3. Forced Defrost Mode

1) How to start

( Basic Models Only )

; Press the REF. SET button 5 times while pushing the FRZ. SET button.

( Dispenser Models Only )

- Press the LOCK button.

- Press the Refrigerator Set button 5 times while pushing the Freezer Set button.

2) Except PRECOOL, steps are same as above 2. Normal Defrost Mode.

Normal Mode

PRECOOL

Defrsot Heater

Time

Division Compressor Freezer Fan

Refrigerator Fa n

50min

Off

OFF OFF

OFFOFF

OFF

OFF OFF

OFF OFF ON

7min

OFF

PAUSEHEATER DEFROST FAN DELAY

Control

30min ( D1 error )

80min

(

F3 error

)

5min

1. How to enter this check mode

; Press the FRZ. SET button 5 times while pushing the REF. SET button.

2. The Front LED displays the current error code ( if happens ).

3. How to exit this mode

1) Press the FRZ.SET button

2) After 4 minutes automatically exit.

4. Error Code

FUNCTIONS ( Error Display_Basic Model )

Display (LED flicker) Remark

Freezer sensor disconnection or short

Refrigerator sensor disconnection or short

; All Error Code reset, when the relative parts turn into normal.

Defrost sensor disconnection or short

Refrigerator Door switch is defective.

Room temperature sensor disconnection or short

Abnormal return after defrosting

Freezer Door switch is defective.

Abnormal or defective cycle

5. Troubleshooting when error happens

( If the relative parts is normal, Error code display will be reset. )

1) Freezer sensor error

- Cause : Freezer sensor disconnection or short.

- Check point : Measure the resistance between both terminals after separating CN9 of the Main PCB.

If sensor is disconnected or short, change that in the freezer compartment.

2) Refrigerator sensoer error

- Cause : Refrigerator sensor disconnection or short.

- Check point : Measure the resistance between both terminals after separating CN8 of the Main PCB.

If sensor is disconnected or short, change that in the refrigerator compartment.

3) Room temperature sensor error

- Cause : Room temperature sensor disconnection or short.

- Check point : Measure the voltage of sensor part on the Main PCB.

If voltage is 0.5~4.5V, normal. If voltage is 0V (short) or 5V (disconnect), change new one.

FUNCTIONS ( Error Display_Basic Model )

4) Defrost sensor error

- Cause : Defrost sensor disconnection or short.

- Check point : Measure the resistance between both terminals after separating CN9 of the Main PCB.

If sensor is disconnected or short, change that on the evaporator.

5) Refrigerator door switch error

- Cause : When it senses the door open for more than 1 hour.

- Check point : Check the each door switch and exchange.

6) Freezer door switch error

- Cause : When it senses the door open for more than 1 hour.

- Check point : Check the each door switch and exchange.

7) Cycle error

- Cause : When compressor works for over 3 hours although Defrost sensor is over -5C.

- Check point : Refrigerant leakage.

8) Abnormal defrosting end error

- Cause : in case defrosting mode ends after 80 minutes.

- Check point : Measure the resistance between both terminals of the defrost heater.

If the resistance is infinity (disconnection) or 0 ohm (short).

1. How to enter this check mode

; Press the SUPER FRZ. button 5 times while pushing the FRZ. SET button.

2. The Front LED displays the current error code ( if happens ).

; Every time you press the FRZ. Set button, the following value display.

1) The appliance running time. ( From the plug in. )

2) Freezer sensor temperature.

3) Defrost sensor temperature.

4) Refrigerator sensor temperature.

5) Room temperature.

3. How to exit this mode

1) Press the REF.SET button

2) After 4 minutes automatically exit.

FUNCTIONS ( Error Display_Basic Model )

4. Error Code

; All Error Code reset, when the relative parts turn into normal.

Refrigerator sensor disconnection or short

Room temperature sensor disconnection or short

Display (Error Code) Remark

Freezer sensor disconnection or short

Freezer Door switch is defective.

Home Bar Door switch is defective.

Defrost sensor disconnection or short

Refrigerator Door switch is defective.

Pull-Down mode display (No error)

Forced Defrost mode display (No error)

Abnormal or defective cycle

Return after defrosting : abnormal or defective

5. Troubleshooting when error happens

( If the relative parts is normal, Error code display will be reset. )

1) Freezer sensor error

- Cause : Freezer sensor disconnection or short.

- Check point : Measure the resistance between both terminals after separating CN9 of the Main PCB.

If sensor is disconnected or short, change that in the freezer compartment.

- Error code display

Freezer sensor is short. Freezer sensor is disconneted.

2) Refrigerator sensoer error

- Cause : Refrigerator sensor disconnection or short.

- Check point : Measure the resistance between both terminals after separating CN8 of the Main PCB.

If sensor is disconnected or short, change that in the refrigerator compartment.

- Error code display

Refrigerator sensor is short. Refrigerator sensor is disconneted.

3) Room temperature sensor error

- Cause : Room temperature sensor disconnection or short.

- Check point : Measure the voltage of sensor part on the Main PCB.

FUNCTIONS ( Error Display_Basic Model )

If voltage is 0.5~4.5V, normal. If voltage is 0V (short) or 5V (disconnect), change new one.

- Error code display

RT sensor is short. RT sensor is disconneted.

4) Defrost sensor error

- Cause : Defrost sensor disconnection or short.

- Check point : Measure the resistance between both terminals after separating CN9 of the Main PCB.

If sensor is disconnected or short, change that on the evaporator.

- Error code display

Defrost sensor is short. Defrost sensor is disconneted.

5) Refrigerator door switch error

- Cause : When it senses the door open for more than 1 hour.

- Check point : Check the each door switch and exchange.

6) Freezer door switch error

- Cause : When it senses the door open for more than 1 hour.

- Check point : Check the each door switch and exchange.

7) Cycle error

- Cause : When compressor works for over 3 hours although Defrost sensor is over -5C.

- Check point : Refrigerant leakage.

8) Abnormal defrosting end error

- Cause : in case defrosting mode ends after 80 minutes.

Check point : Measure the resistance between both terminals of the defrost heater

If the resistance is infinity (disconnection) or 0 ohm (short).

1. How to enter this check mode

1) Press the LOCK button.

2) Press the Super Freezer button 5 times while pushing the Freezer Set button.

2. The Front LED displays the current error code ( if happens ).

; Every time you press the Freezer Set button, the following value display.

1) The appliance running time. ( From the plug in. )

2) Freezer sensor temperature.

3) Defrost sensor temperature.

4) Refrigerator sensor temperature.

5) Room temperature.

6) P Factor display.

7) Filter remaing time until exchange. ( Filter runing time is about 4,320Hr )

3. How to exit this mode

1) Press the LOCK button

FUNCTIONS ( Error Display_Dispenser Models )

2) After 4 minutes automatically exit.

4. Error Code

Return after defrosting : abnormal or defective

Pull-Down mode display (No error)

Forced Defrost mode display (No error)

Drop the ice while Et

Full ice switch error

Abnormal or defective cycle

Flow sensor is defective.

Horizontal switch error

Water supply error

Freezer Door switch is defective.

Home Bar Door switch is defective.

Ice sensor disconnection or short

Room temperature sensor disconnection or short

Defrost sensor disconnection or short

Refrigerator Door switch is defective.

Display (Error Code) Remark

Freezer sensor disconnection or short

Refrigerator sensor disconnection or short

; All Error Code reset, when the relative parts turn into normal.

5. Troubleshooting when error happens

( If the relative parts is normal, Error code display will be reset. )

1) F1 error

- Cause : Freezer sensor disconnection or short.

- Check point : Measure the resistance between both terminals after separating CN15 of the Main PCB.

If sensor is disconnected or short, change that in the freezer compartment.

- Error code display

Freezer sensor is short. Freezer sensor is disconneted.

2) R1 error

- Cause : Refrigerator sensor disconnection or short.

- Check point : Measure the resistance between both terminals after separating CN14 of the Main PCB.

If sensor is disconnected or short, change that in the refrigerator compartment.

- Error code display

Refrigerator sensor is short. Refrigerator sensor is disconneted.

FUNCTIONS ( Error Display )

3) rt error

- Cause : Room temperature sensor disconnection or short.

- Check point : Measure the voltage of sensor part on the Main PCB.

If voltage is 0.5~4.5V, normal. If voltage is 0V (short) or 5V (disconnect), change new one.

- Error code display

RT sensor is short. RT sensor is disconneted.

4) d1 error

- Cause : Defrost sensor disconnection or short.

- Check point : Measure the resistance between both terminals after separating CN15 of the Main PCB.

If sensor is disconnected or short, change that on the evaporator.

- Error code display

Defrost sensor is short. Defrost sensor is disconneted.

5) Door switch error ( dr, dF, dH on display )

- Cause : When it senses the door open for more than 1 hour.

- Check point : Check the each door switch and exchange.

6) EI error

- Cause : Ice sensor is abnormal.

- Check point : Measure the resistance between both terminals after separating CN11 of the Main PCB.

If sensor is disconnected or short, change that in the automatic ice maker.

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