ERF-384MBI | Daewoo ERF-396 Service manual

Service Manual

No-Frost

Combi-Refrigerator

Models:

ERF-366N, 366A

ERF-396N, 396A

ERF-416N, 416A

DAEWOO ELECTRONICS

MANUFACTURING ESPAÑA, S.A.

Downloaded from Fridge-Manual.com Manuals

. CONTENTS

1. SPECIFICATIONS

2. EXTERNAL DRAWINGS

3. REAL VIEW

4. MACHINE ROOM VIEW

5. REFRIGERANT CYCLE

6. TEMPERATURES DIAGRAM

7. WIRING DIAGRAMS

8. PCB CIRCUIT DIAGRAMS

9. COMPONENTS DISASSEMBLY PICTURES

10. DOOR POSITION CHANGE PROCESS

11. EXPLODE DRAWING

12. PARTS LIST

13. PCB CONTROL FUNCTION


1

1. SPECIFICATIONS

Model name

Division

Refrigerant type

Refrigerant Q´ty

Blowing agent

Cooling system

Defrost system

Compressor

Rated voltage

Rated input (A)

Lamp rated input (W)

Gross capacity

(liter)

Freezer

Refrigerator

Total

External dimension

(m m )

Height

Width

Depth *

Energy class

Freezing capacity(kg/24h)

Star rating

Climate class

Net weight (kg)

366N 366A 396N 396A 416N 416A

Semi A Full A Semi A Full A Semi A Full A

R-134A

100 grs

C-PENTANE

Fan cooling system

Automatic start & Automatic stop system

Sanyo CBE-140L5Z

AC220~240V / 50Hz

0.42A

15

94

218

312

1765

600

642

94

218

312

1765

600

642

94

252

346

1896

600

642

94

252

346

1896

600

642

109

252

361

1985

600

642

109

252

361

1985

600

642

A

5

* *** * *** * *** * *** * *** * ***

N N N N N N

70 70 74 74 76 76

REMARKS:

* Depth exception handle

* Division: Semi A = Semi automatic

Full A = Full automatic

1.2. Types of the approved safety standars


2

2. EXTERNAL DRAWINGS

2.1. ERF-366A, 396A, 416A

1.

2.

3.

4.

5.

6.

Shelves ( ERF-366 A : 2EA )

( ERF-396 A : 3EA )

( ERF-416 A : 3EA )

Multi duct

Shelf of low temp compartment

Door of low temp compartment

Low temp compartment

Cover vegetable

7.

8.

Knob humidity

Vegetable case "L"

9.

Vegetable case "R"

10.

Case f "D"

11.

Case icing ( In "case f d" )

12.

Case f "B" ( 2EA)

Case f "C" ( ERF-416 A : 2EA)

13.

Case f "A"

14.

Cover dairy

15.

Dairy pocket

16.

Pocket "R"

17.

Bottle pocket

18.

Guide bottle pocket

19.

Multi pocket

20.

Adjustable foot

2.2. ERF-366N, 396N, 416N 1. Shelves ( ERF-366 N : 2EA )

( ERF-396 N : 3EA )

( ERF-416 N : 3EA )

2. Knob control

3. Multi duct

4. Shelf of low temp compartment

5. Low temp compartment

6. Door of low temp compartment

7. Cover vegetable

8. Knob humidity

9. Vegetable case "L"

10. Vegetable case "R"

11. Case f "D"

12. Case icing ( In "case f d" )

13. Case f "B" (2EA)

Case f "C" ( ERF-416 N : 2EA)

14. Case f "A"

15. Cover dairy

16. Dairy pocket

17. Pocket "R"

18. Bottle pocket

19. Guide bottle pocket

20. Multi pocket

21. Adjustable foot


3

3. REAL VIEW


4

4. MACHINE ROOM VIEW


5

SCREW MACHINE

5. REFRIGERANT CYCLE

CAPILLARY TUBE


6

6. TEMPERATURES DIAGRAM

Refrigerator

SUPER

HIGH

MID

LOW

VAC

: 0 ºC

: 1 ºC

: 3 ºC

: 5 ºC

: 6 ºC

Low temp compartment : 3 ºC

Vegetables compartment: 0 ºC~5 ºC

Freezer:

SUPER

HIGH

MID

LOW

VAC

: -23 ºC

: -22 ºC

: -20 ºC

: -18 ºC

: -16 ºC


7

7. WIRING DIAGRAMS

7.1- ERF-XX6A


8

7.2- ERF-XX6N


9

8. PCB CIRCUIT DIAGRAMS

8.1- ERF-XX6A


10

8.2- ERF-XX6N


11

9. COMPONENTS DISASSEMBLY PICTURES

1- FRONT PCB (FULL AUTOMATIC TYPE)

- Input a cutter sleeve between

Window FCP and Panel F control.

Important: Input carefully cutter in the area that picture shows (down right).

- Lift Window FCP up.

* Remark: Input cutter deeply and carefully in order to lift up easily and avoid paint damages and scratches.

- Unscrew Panel F Control.


12

- Unscrew the two fixing screws of

F-PCB as.

2- SWITCH DOOR

- Force switch door to the left side and input a thin driver in the rigth part as picture shows.

After this operation, lift switch up.

* Remark: Input driver carefully in order to lift up easily and avoid paint damages and scratches.

- move switch to left side.

- Take out switch and disconnect housing.


13

3- M-PCB

- Unscrew the two fixing screws of cover PCB box.

- Disconnect all housings connectors from M-pcb, and force plastic locker of pcb box in order to take out the pcb.

* Remark: In ERF-xx6N models forced defrost button is located in M-PCB, so pcb box cover must be disassembled

4- RELAY BOX COVER

- Press relay box cover stopper sleeve with a minus driver like picture shows.


14

5- MULTI DUCT

- Take out window r pulling the top part sleeve.

- Unscrew all fixing screws

- To disassemble V-PCB force left plastic stopper and lift pcb up.

- To disassemble R-sensor lift it up from the wires carefully.


15

6- LOUVERS:

- Unscrew the two fixing screw for disassembly louver A and B

TO DIASEMBLE IT IS

NECESSARY A STAR

DRIVER WITH A

MINIMAL LENGHT OF

10 CM

- Disconnect fan motor housing

- Unscrew the fixing screw in order to disassemble Louver A.


16

- When louvers are disassembled is very important check Knob F louver position.

Default position is M

L POSITION

L POSITION H POSITION

7-CHANGE DOOR OPEN SIDE

- Unscrew cover T hinge

- Before changing door open side, disconnect door housing connector.

Follow next sheets instructions to change door open side


17

10. DOOR POSITION CHANGE PROCESS

STEP 1 : Remove door Follow to remove

1. Remove“ COV ER HINGE” and “

HINGE T”

2. Remove“ R” door.

3. Remove “ HINGE M”

4. Remove“ F” door

5. Remove“COV ER BRACKET”

6. Remove“ HINGE U”

STEP 2 : Change door handle

7. Reverse the position of“ COV ER

BU SHING”

8. Move “ R DOOR HANDLE” to “ F

DOOR”

9. Reverse the position of“ CAP DR

BU SHING”

10. Move “ F DOOR HANDLE” to “

R DOOR”


18


19

11. Attach the“ HINGE U” on the left.

12. Attach the“ F DOOR”

13. Reverse the position of “ HINGE

M” and

“ CAP SCREW HOLE”

1. Attach the“ R DOOR”

15. Attach the“ HINGE T” on the left of cabinet after assem bling to“R DOOR”

16. Reverse the position of “ COV ER

HINGE ” and “ COV ER CAB HARNESS”

11. EXPLODE DRAWING


20


21

12. PARTS LIST

NO PART NAME

1 SHELF GLAS AS

2 COVER GLAS C/C AS

3 CASE CHILD

4 DOOR CHILLED CASE

5 COVER VEGTB CASE

6 KNOB HUMIDITY

7

CASE VEGETABLE *L

CASE VEGETABLE *R

8 CASE ICING

9 CASE F D

CASE F B AS

10

CASE F C AS

11 CASE F A AS

12 V-PCB AS

13 KNOB R CONTROL

14 COVER MULTI DUCT

15 COVER MULTI DUCT

14 COVER MULTI DUCT

15 COVER MULTI DUCT

16 INSU MULTI DUCT

16 INSU MULTI DUCT

17 SOCKET LAMP AS

18 LAMP

19 WINDOW R

20 DECO M/DUCT COVER

21 SENSOR R AS

22 COVER *T HINGE

23 HINGE *T AS

24 SPECIAL BOLT C

25 COVER CAB HARNESS

26 ASSY CAB URT

27 SWITCH DOOR

28 BOX PCB

29 M-PCB AS

30 COVER PCB BOX

31 PIPE WI-CON AS

32 COVER HRNS*R

COVER HRNS*L

33 COVER BUSH

34 WINDOW FCP B

35 WINDOW FCP A

36 PANEL *F CONTROL


3017839400

3011497900

3011181400

3011760500

3011497700

3013410800

3011181900

3011182000

3011163200

3011181800

3011184900

3011185000

3011184800

30143C6260

3013410900

3011495700

3011495600

3011495900

3011495800

3013353800

3013353900

3017903900

3013600700

3015510100

3011633200

3012731800

DMS1494310

DMS1494320

3012922600

3016004900

DMS1477510

DMS1477520

-

-

-

3011755200

3011762900

3010545300

DMS0545310

30143C6060

30143C7060

3011477600

DMS1477610

3014434500

3011477100

DMS1477110

3011477200

DMS1477210

3011498200

DMS1498210

3015510000

3015509900

3014234000

DMS4234010

PART CODE

MODEL

REMARK

366N 366A 396N 396A 416N 416A

2 2 3 3 3 3

11

1

1

1

1

1

1

1

1

-

1

1

1

-

-

-

1

-

1

1

-

1

1

2

1

1

2

1

1

1

1

1

1

1

1

1

1

1

1

1

-

-

1

1

-

-

1

1

1

1

1

-

-

11

1

1

1

1

1

1

1

1

1

1

1

1

-

-

-

-

1

-

-

-

1

1

2

1

1

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

-

1

1

-

1

1

1

1

-

-

11

1

1

-

1

1

1

1

1

-

1

1

-

1

1

-

-

-

1

1

2

1

1

-

1

1

2

1

1

1

1

1

1

1

1

1

1

1

1

1

-

-

1

1

-

-

1

1

1

1

1

1

-

11

1

1

-

1

1

1

1

1

1

1

1

-

1

-

1

-

-

-

-

2

1

1

-

1

1

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

-

1

1

-

1

1

1

1

1

-

1

1

1

1

1

1

1

1

-

-

1

1

-

-

1

1

1

1

1

-

1

-

-

1

1

2

1

1

-

1

1

2

1

1

1

1

1

1

1 NANO SILVER

1 NANO SILVER

1

2

1 NANO SILVER

1 NANO SILVER

1

-

-

-

-

1

BLUE MILKY

2 BLUE MILKY

1 BLUE MILKY

1

-

1

1

-

1

1

-

-

1

-

1

1

1

1 BLUE MILKY

1 BLUE

1

1

1

1

1

1 SNOW WHITE

1 03 SILVER

1

11 11

1 1 SNOW WHITE

1

-

1

-

03 SILVER

-

1

1 WHITE

1 03 SILVER

1

-

1 03 SILVER

1 SNOW WHITE

1 03 SILVER

1 SNOW WHITE

1

1 03 SILVER

1 SNOW WHITE

1 03 SILVER

1 SNOW WHITE

1 03 SILVER

1 SNOW WHITE

-

1

1 03 SILVER

1 SNOW WHITE

22

NO PART NAME

37 BUTTON F-CP

38 F-PCB AS

39 GASKET R DOOR AS

40 HANDLE R

3016304300

30143C6160

3012306600

3012306800

3012640000

DMS2640010

3011495200 41 COVER HNDL SCREW

42 SPECIAL SCREW

43 ASSY R DR A/S 366A SW

ASSY R DR A/S 366A SV

ASSY R DR A/S 366N SW

ASSY R DR A/S 366N SV

DMS1495210

3016033600

DMS0060000

DMS0060010

DMS0060100

DMS0060110

ASSY R DR A/S 396A 416A SW DMS0061000

ASSY R DR A/S 396A 416A SV DMS0061010

ASSY R DR A/S 396N 416N SW DMS0061100

ASSY R DR A/S 396N 416N SV DMS0061110

44 CAP DR BUSHING 3010967400

45 COVER DAIRY POCKET

46 POCKET DAIRY

47 POCKET R

48 GUIDE BOTTLE POCKET

DMS0967420

3011495000

3019025000

3019025200

3012523800

49 POCKET BOTL AS

50 POCKET MULTI AS

51 CAP HANDLE

3019026100

3019026200

52 HANDLE F

3010910000

DMS0910030

3012639800

DMS2639810

DMS0062000 53 ASSY F DR A/S 366 396 SW

ASSY F DR A/S 366 396 SV

ASSY F DR A/S 416 SW

DMS0062010

DMS0062100

ASSY F DR A/S 416 SV

54 GASKET F DOOR AS

55 CAP SCREW

56 CAP SCREW HOLE

57 COVER CAB BRACKET

58 HINGE *M

59 HINGE *U

60 FOOT ADJUSTING AS

61 BRACKET FAN MOTOR

62 MOTOR FAN AS

63 LOUVER F B

63 LOUVER F B

64 LOUVER F A

64 LOUVER F A

65 BUSHING FAN MOTOR

66 FAN

67 KNOB F LOUVER

68 EVAPORATOR AS

69 HEATER D AS

70 CAP DRAIN HOSE

DMS0062110

3012306500

3012306700

3010920200

DMS0920220

3010920300

3011494900

DMS1494910

3012908002

DMS2908201

3012101800

3010615600

3011804710

3018918900

3018919000

3018918700

3018918800

3010701800

3011801410

3013410700

3017045600

3012807651

3010919700

PART CODE

1

1

4

4

1

1

1

1

-

1

1

1

1

1

-

1

-

-

-

1

1

4

4

-

-

1

1

1

2

1

1

1

1

1

2

1

-

1

-

1

1

1

1

1

-

1

-

1

1

1

4

4

1

1

1

1

-

1

1

1

1

1

1

1

-

-

-

-

-

4

4

-

1

1

1

1

2

1

1

1

1

1

2

1

-

1

-

1

1

1

1

1

-

1

-

1

1

1

4

4

1

1

1

1

-

1

1

1

1

1

-

1

1

1

-

-

-

4

4

-

-

1

1

1

2

1

1

1

1

1

2

1

-

1

-

1

1

1

1

1

-

1

-

1

MODEL

REMARK

366N 366A 396N 396A 416N 416A

1

1

4

1

-

-

-

1

1

4

1

-

1

1

1

1

4

-

1

-

-

1

1

4

-

1

1

1

1

1

4

-

1

-

-

-

1

1

1

1 03 SILVER

1 SNOW WHITE

4 03 SILVER

1

1

4

4

1

1

1

1

-

1

1

1

1

1

-

1

-

-

1

-

-

4

4

1

-

1

1

1

2

1

1

1

1

1

2

1

-

1

-

1

1

1

1

1

-

1

-

1

1

1

4

4

-

1

1

-

1

1

1

1

1

1

1

1

-

-

-

-

-

4

4

-

1

1

1

1

2

1

1

1

1

-

2

1

1

-

1

1

1

1

1

1

1

1

1

-

4 SNOW WHITE

4

GRIP S-WHITE

GRIP SILVER

GRIP S-WHITE

GRIP SILVER

1 GRIP S-WHITE

1 GRIP SILVER

GRIP S-WHITE

GRIP SILVER

1 SNOW WHITE. SUBSTITUTE DMS0918301

1 03 SILVER

1 BLUE MILKY

1

1

1 BLUE MILKY

1 BLUE MILKY

1 BLUE MILKY

4 SNOW WHITE

4 03 SILVER

1 03 SILVER

1 SNOW WHITE

GRIP S-WHITE

GRIP SILVER

1 GRIP S-WHITE

1 GRIP SILVER

-

1

1 SNOW WHITE

1 03 SILVER

1

1 SNOW WHITE

1

1

1

2

1

1

1

1

-

2

1

1

-

1

1 03 SILVER

1

23


NO PART NAME

71 CASE VAPORY

72 FIXTURE COMP

73 DRYER ASSY

74 COMPRESSOR

75 ABSORBER COMP

76 SCREW MACHINE

77 SPECIAL WASHER

78 PIPE CHARGE

79 HARNESS EARTH

80 BASE COMP

81 SPECIAL SCREW A

82 CAPACITOR RUN

83 SPECIAL WASHER R/C

84 SPECIAL NUT R/C

85 RELAY BOX

86 CLAMP CORD A

87 CLAMP CORD B

88 SWITCH P RELAY OL

89 SWITCH P RELAY PTC

90 HARNESS RELAY

91 COVER MECH HOUSING

92 SCREW TAPPING

93 CORD POWER AS

94 LOUVER F C

PART CODE

3011162700

3012005300

3016802203

DMS0A00100

3010103400

DMS1B00100

DMS1B00200

3014418211

3012735220

-

3016004300

DMS6402129

DMS6006510

DMS6006410

DMS0527900

DMS1200100

DMS1200200

DMS1A00100

DMS1C00100

3012731901

3011454100

7112401011

3011343340

3018920700

1

1

1

1

1

1

1

1

1

1

1

1

1

1

4

1

1

MODEL

366N 366A 396N 396A 416N 416A

1 1 1 1 1 1

1

4

2

1

1

1

1

4

2

1

1

1

1

4

2

1

1

1

1

4

2

1

1

1

1

4

2

1

1

1

1

4

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

4

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

4

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

4

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

4

1

1

REMARK

1

1

1

1

1

1

4

1

1

1

1

1

1

1

1

1 COMMON

1


24

13. PCB CONTROL FUNCTION

13.1. ERF-XXXA

NO

1.

FUNCTION CONTENTS

DISPLAY

1) VAC STEP LED ON: WHEN TEMP CONTROL S/W IS PRESSED 1 TIME.

2) LOW STEP LED ON: WHEN TEMP CONTROL S/W IS PRESSED 2 TIMES.

3) MID STEP LED ON: WHEN TEMP CONTROL S/W IS PRESSED 3 TIMES.

4) HIGH STEP LED ON: WHEN TEMP CONTROL S/W IS PRESSED 4 TIMES.

5) SUPER STEP LED ON: WHEN TEMP CONTROL S/W IS PRESSED 5 TIMES.

6) ERROR LED DISPLAY (ON MAIN PCB)

?FUNCTION DISPLAY

- D1 ERROR : LED is off & on one time.

- D2 ERROR : LED is off & on two times.

- R1 ERROR : LED is on & off one time.

- RT ERROR : LED is on & off two times.

- EP ERROR : LED is on & off continually

- DR ERROR : LED is on continually

- FORCED DEFROST OF CONDITION: HIGH, LOW led Lamps are on

- SHORT CIRCUIT OF CONDITION: SUPER, MIDDLE, VAC led Lamps are on

25


2.

TEMPERATURE

ADJUSTMENT

&

CONTROL

1) TEMP. CONTROL SWITCH

1.1- TEMP. CONTROL

When TEMP CONTROL button is pressed, the led lamps MIDLE - HIGH -

SUPER - VAC -LOW - MIDDLE will be on in sequence.

TEMPERATURE will be set if the button doesn’t get pressed again within 5 sec

1.2- FORCED DEFROST: will be start when this button pushed for over 5 seconds continuously.

1.3- SHORT CIRCUIT OPERATION: will be started and stopped when this button pushed over 30 times.

2) TEMPERATURE CONTROL

2.1- COMP will be controlled by the on/off condition of each mode.

2.2- STEP DIFF of ROOM R : Vac/Low - 1.75 deg, Low/Middle - 0.7deg,

Mid/High - 1.05deg, High/Super - 1.4 deg

2.3- OFF point of ROOM R in MID position: -0.5°C

2.4- ON/OFF DIFF of ROOM R: 3ºC

4.95¡ É

3.2¡ É

2.5¡É

1.45¡É

0.05 ¡ É O N - í

1.95 ¡É

0.2¡ É

-0.5¡É

-1.55¡ É

OFF - í

-2.95¡É

3.

VACATION

3) FORCED DEFROST

3.1- Defrost mode will be Started independent of the cycle.

3.2- The flow is same as the general defrost mode flow.

4) SHORT CIRCUIT OPERATION

4.1 - COMP & FAN will be on independent of the operation condition.

4.2- The time limit of SHORT CIRCUIT OPERATION: 60 hrs

- Press TEMP. CONTROL SWITCH and make VAC led lamp on.

ON POINT: 4.95°C

OFF POINT: 1.95°C

26


4.

5.

Determination of

DEFROST

6.

SUPER

DEFROST

MODE

- Press TEMP. CONTROL button and make SUPER led lamp on.

ON POINT: 0.05°C

OFF POINT: -2.95°C

1) Starting condition of Defrost Mode

1.1- When accumulated running time of comp. Is 8, 10, 12, 18, 30hrs.

1.2- After Checking the condition ‘1.1’ if total time ( COMP on time + COMP off time) is more than 24, 36, 48, 72hrs, then defrost mode starts immediately.

RT-SENSOR

RT 29°C Up

Accumulated running time of

Door Open

8HR

COMP

Door Close

18HR

Total running time of COMP

Door Open

24HR

Door Close

36HR

20<RT< 28°C

15<RT< 19°C

RT 14°C Down

12HR

8HR

8HR

30HR

12HR

10HR

48HR

24HR

24HR

72HR

36HR

36HR

1) General Defrost Mode

1.1- Start: By determination of defrost

1.2- Process: General operation - Heater on – Pause (6min) - General operation

-Heater defrosts: When the temperature at D-sensor is over 10°C, heater turns off.

-Limit time: 80 min (30 min on D SENSOR ERROR)

2) Forced Defrost Mode

2.1- Start: by press TEMP. CONTROL button for 5 seconds continuously.

2.2- Process: same as General Defrost Mode

-Heater is supposed to be on Initial 30 seconds. (for TEST)

2.3- Display : led lamps ‘LOW’ ‘HIGH’ is on.

7.

8.

INITIAL

DEFROST

PREVENTION

OF COMP.

RESTART

1) When power is on, if the temperature at the D-sensor is under 3.5°C, then General

Defrost Mode starts.

2) When initial defrost mode starts, heater will be on directly and defrost mode will be started.

COMP. doesn’t work after COMP. turns off even though R-sensor is on condition. (This is to protect comp.)

1) General operation : The COMP can’t be on within 6 min.

2) Operation of LOW RT : The COMP can’t be on within 40 min.


27

- ERROR DISPLAY

- When error happens, it is displayed on led lamp.(Main PCB LED 1)

1) R1 ERROR (It happens when R-SENSOR is OPEN or SHORT)

1.1- DISPLAY : On & off one time while LED is on.

1.2- CONTROL : Controlled by the condition of RT

(Unit : min)

RT-S TEMP RT-S ERROR 19ºC Down 20ºC Up

9.

ERROR

DISPLAY

&

CONTROL

10.

SHORT CIRCUIT

TEST

COMP. Operating TIME (ON / OFF) 20 / 30 15 / 35 22 / 28

1.3- CANCEL : when R-SENSOR is working normally.

2) D1 ERROR (It happens when D-SENSOR is OPEN or SHORT)

2.1- DISPLAY : On & off one time while LED is off.

2.2- CONTROL : Return to the limit defrost time of Defrost (30 min)

3) D2 ERROR (It happens when heater is off by time - 80 min).

3.1- DISPLAY : On & off two times while LED is off.

3.2- CONTROL : Return to next limit defrost time (80 min)

4) RT ERROR (It happens when RT-SENSOR is OPEN or SHORT)

4.1- DISPLAY : On & off two times while LED is on.

4.2- CONTROL : The system is normally operating but the controlling by RT-

SENSOR doesn’t work.

4.3- CANCEL : when RT-SENSOR is working normally.

5) DR ERROR

5.1- Display : LED is on continuously

5.2- Control : Deletion of function related door switch sensing

5.3- If door switch (open & close) is sensed, the error is terminated automatically

1) START : by pressing REF.TEMP. CONTROL button 30 times continuously.

2) CANCEL : by pressing TEMP CONTROL button 30 times continuously.

Cf. the system generally operates after the limit t ime 60 hrs. passes.

3) DISPLAY : LED lamps are SUPER, MIDDLE, VAC on

4) CONTROL : COMP & FAN will be on independent of the operating condition.

(There is no defrost mode on this test.)

11.

FUNCTION

OF

TIME REDUCTION

1) HOW TO REDUCE: (There is no FAST KEY on PCB for MP.)

1 min : Click FAST KEY one time

30 min : If you press FAST KEY continuously, you can reduce 30 minutes on each second.

2) Practical Use : Can be applied to reduce needless time on test.

EX) function of stop for 6 min

28


12. POWER ON / OFF

1) START : Press POWER button

2) CANCELATION : Press POWER button again

3) DISPLAY

- START : All LED lamps are off and power is off.(COMP, Heater, Lamp of Room)

- CANCEL : Return to the last condition(dial)

13.

MEMORY SAVING

ON POWER

FAILURE

-After power failure or momentary power failure happens, if power is back on, the mode will be returned on last condition.

14. EEPROM CLEAR

-Make EEPROM clear r ight before shipping (set the initial mode)

-How to clear : press REF.TEMP. button 5 time with pressing POWER button.

15.

FUNCTION

OF

LOW ROOM

TEMPERATURE

1) Condition of LOW RT TEMP :

1.1- LOW RT A : RT SENSOR < 14ºC

1.2- LOW RT B : 15ºC > RT-S < 19ºC

2) Control

2.1- When Comp. is on, R-SENSOR HTR is off.

When it passes 6 min after COMP. is off, R-SENSOR HTR is on until COMP is on.

2.2- COMP. Can’t be on within 40 min. after COMP. is off.

2.3- When it is not the Mode of LOW ROOM TEMP. or RT-SENSOR is on

ERROR(open or short), R-SENSOR HTR is off.

- LOW RT TEMP A Condition

- R-SENSOR Operating Temperature 1ºC up

- LOW RT TEMP B Condition

R-SENSOR Operating Temperature


29

1) R-SENSOR OFF POINT can be adjusted by changing the input voltage of MICOM 26 pin.

2) The default of input voltage is 0V.

3) The changed OFF POINT is base OFF POINT + OFF POINT of input voltage.

16.

R-SENSOR

OFF POINT

ADJUSTING

OPTION

4) The change of R-SENSOR OFF POINT depend on the input voltage of MICOM

MICOM

0 1.0 1.5 2.0 2.5 3.7

Input (V)

OFF

POINT

Variation

(ºC)

-0.5ºC

(DEF)

1.0ºC down

2.0ºC down

3.0ºC down

1.0ºC

up

2.0ºC up

5.0

3.0ºC up

R26, R27

Resistan ce

(kOhms)

Jumper adoption

R27 : 40

R26 : 10

R27:23.3

R26:10

R27:15

R26:10

R27:10

R26:10

R27:3.5

R26:10

R27:10

R26:DEL

5) APPLICATION (MAIN PCB)

5.1- GENERAL: MICOM 26 port - 0V

5.2- DELETE J2 (CHANGING R OFF POINT 1DEG UP) : MICOM 26 port – 2.5V

LOW COOLING

OPTION

- R-SENSOR OFF POINT ADJUSTMENT (1 DEG. DOWN)

- J1 DELETION on LOW COOLING OPTION

Default resistance (31.4 Kohms) + 1.5 kohms = 32.9 Kohms

Operating on condition that R-SENSOR OFF point goes down 1ºC.

30


13.2. ERF-XXXN

NO FUNCTION

1.

CONTENTS

DISPLAY

- Temperature control of Refrigerator

Maximum angle clockwise : Temperature setting for SUPER

Maximum angle counter-clockwise : Temperature setting for VACATION

Maximum rotation : 280±10°

Minimum Step Difference : 0.7 deg/28°

Total step Difference : 6.3 deg

ERROR LED DISPLAY (ON MAIN PCB)

DISPLAY ¦++Ù LED +ÔÀ-ã-Ã³

?FUNCTION DISPLAY

- D1 ERROR : LED is off & on one time.

- D2 ERROR : LED is off & on two times.

- R1 ERROR : LED is on & off one time.

- RT ERROR : LED is on & off two times.

- DR ERROR : LED is on continually

- Buzzer sounds if any button of M-PCB(SW2) is pushed.

- FORCED DEFROST OF CONDITION : Button of M-PCB(SW2) is pushed 1 time.

31


1) TEMPERATURE ADJUSTMENT

1.1- TEMPERATURE ADJUSTMENT

TEMP CONTROL DIAL is rotated VAC , LOW, MIDDLE, HIGH, SUPER.

TEMPERATURE will be set if the Dial doesn’t get rotated again within 5 sec

1.2- FORCED DEFROST : Button of M-PCB(SW2) is pushed 1 time.

1.3- SHORT CIRCUIT OPERATION : Button of M-PCB(SW2) is pushed 2 times.

2 )TEMPERATURE CONTROL

2.1- COMP will be controlled by the on/off point of R-Sensor at each mode.

2.2- STEP DIFF of ROOM R : 1.4 deg

2.3- Middle OFF point of ROOM R : -0.15°C

2.4- ON/OFF DIFF of ROOM R : 3 deg

2.

TEMPERATURE

ADJUSTMENT

&

CONTROL

5.65¡ É

4.25¡É

2.85¡É

1.45¡É

0.05 ¡ É O N - í

2.65 ¡É

1.25¡ É

-0.15¡É

-1.55¡ É

OFF - í

-2.95¡É

3 )FORCED DEFROST

3.1- Defrost mode will be Started independent of the cycle.

3.2- The flow is same as the general defrost mode flow.

4 )SHORT CIRCUIT OPERATION

4.1- COMP & FAN will be on independent of the operation condition.

4.2-The time limit of SHORT CIRCUIT OPERATION: 60 hrs

3.

VACATION

- Rotate TEMP. CONTROL Dial and make Vacation Location.

ON POINT: 5.65°C

OFF POINT: 2.65°C

32


4. SUPER

5.

DETERMINATION

OF

DEFROST

- Rotate TEMP. CONTROL Dial and make Super Location

ON POINT: 0.05°C

OFF POINT: -2.95°C

- Starting condition of Defrost Mode

- When accumulated running time of comp. is 8, 10, 12, 18, 30hrs.

- After Checking the condition ‘2.1’ if total time(COMP on time + COMP off time) is more than 24, 48, 36, 72hrs, then defrost mode starts immediately.

RT-SENSOR

RT 29°C Up

Accumulated running time of

Door Open

8HR

COMP

Door Close

18HR

Total running time of COMP

Door Open

24HR

Door Close

36HR

20<RT< 28°C

15<RT< 19°C

RT 14°C Down

12HR

8HR

8HR

30HR

12HR

10HR

48HR

24HR

24HR

72HR

36HR

36HR

6.

DEFROST

MODE

1) General Defrost Mode

1.1- Start : By determination of defrost

1.2- Process : General operation - Heater on - Pause (6min) - General operation

-Heater defrost : When the temperature at D-sensor is over 10°C, heater turns off.

-Limit time : 80 min (30 min on D sensor error)

2) Forced Defrost Mode

2.1 Start : Button of M -PCB(SW2) is pushed 1 Time.

2.2 Process : same as General Defrost Mode

-Heater is supposed to be on Initial 30 seconds. (for TEST)

7.

8.

INITIAL

DEFROST

PREVENTION

OF COMP.

RESTART

1) When power is on, if the temperature at the D-sensor is under 3.5°C, then General

Defrost Mode starts.

2) When initial defrost mode starts, heater will be on directly and defrost mode will be started.

COMP. doesn’t work after COMP. turns off even though R-sensor is on condition. (This is to protect comp.)

1) General operation : The COMP can’t be on within 6 min.

2) Operation of LOW RT : The COMP can’t be on within 40 min.


33

9.

ERROR

DISPLAY

&

CONTROL

10.

SHORT CIRCUIT

TEST

* ERROR DISPLAY a. When error happens, it is displayed on led lamp.(Main PCB LED 1)

1) R1 ERROR (It happens when R-SENSOR is OPEN or SHORT)

1.1- DISPLAY : On & off one time while LED is on.

1.2- CONTROL : Controlled by the condition of RT

(Unit : min)

RT-S TEMP RT-S ERROR 19ºC Down 20ºC Up

COMP. Operating TIME (ON / OFF) 20 / 30 15 / 35 22 / 28

1.3- CANCEL : when R-SENSOR is working normally.

2) D1 ERROR (It happens when D-SENSOR is OPEN or SHORT)

2.1- DISPLAY : On & off one time while LED is off.

2.2- CONTROL : Return to the limit defrost time of Defrost (30 min)

3) D2 ERROR (It happens when heater is off by time ? 80 min).

3.1- DISPLAY : On & off two times while LED is off.

3.2- CONTROL : Return to next limit defrost time (80 min)

4) RT ERROR (It happens when RT-SENSOR is OPEN or SHORT)

4.1- DISPLAY : On & off two times while LED is on.

4.2- CONTROL : The system is normally operating but the controlling by RT-

SENSOR doesn’t work.

4.3- CANCEL : when RT-SENSOR is working normally.

5) DR ERROR

5.1- Display : LED is on continuously

5.2- Control : Deletion of function related door switch sensing

5.3- If door switch(open & close) is sensed, the error is terminated automatically.

1) START : Button of M-PCB(SW2) is pushed 2 times and SW1 6 times .

2) CANCEL : Button of M-PCB(SW2) is pushed 1 time.

Cf. the system generally operates after the limit time 60 hrs. passes.

3) CONTROL : COMP & FAN will be on independent of the operating condition.

(There is no defrost mode on this test.)

11.

FUNCTION

OF

TIME

REDUCTION

1) HOW TO REDUCE: (There is no FAST KEY on PCB for MP.)

1 min : Click FAST KEY on e time

30 min : If you press FAST KEY continuously, you can reduce 30 minutes on each second.

2) Practical Use : Can be applied to reduce needless time on test.

EX) function of stop for 6 min

34


15.

FUNCTION

OF

LOW ROOM

TEMPERATURE

1) Condition of LOW RT TEMP :

1.1- LOW RT A : RT SENSOR <14ºC

1.2- LOW RT B : 15ºC > RT-S < 19ºC

2) Control

2.1- When Comp. is on, R-SENSOR HTR is off.

When it passes 6 min after COMP. is off, R-SENSOR HTR is on until COMP is on.

2.2- COMP. can’t be on within 40 min. after COMP. is off.

2.3- When it is not the Mode of LOW ROOM TEMP. or RT-SENSOR is on

ERROR(open or short), R-SENSOR HTR is off.

- LOW RT TEMP A Condition

R-SENSOR Operating Temperature 1ºC up

- LOW RT TEMP B Condition

R-SENSOR Operating Temperature

16. 1) R-Sensor OFF Point can be adjusted by changing the input voltage of Micom 26 pin.

2) The default of input voltage is 0V.

3) The changed OFF Point is base OFF POINT + OFF POINT of input voltage.

R-SENSOR

OFF POINT

ADJUSTING

OPTION

4) The change of R-SENSOR OFF POINT depend on the input voltage of MICOM

MICOM

0 1.0 1.5 2.0 2.5 3.7

Input (V)

OFF

POINT

Variation

(ºC)

R26, R27

Resistan ce

(KOhms)

-0.15ºC

(DEF)

Jumper adoption

1.0

Down

R27 : 40

R26 : 10

2.0

Down

R27:23.3

R26:10

3.0

Down

R27:15

R26:10

1.0

Up

R27:10

R26:10

2.0

Up

R27:3.5

R26:10

5.0

3.0

Up

R27:10

R26:DEL

35


5) APPLICATION (MAIN PCB)

5.1- GENERAL: MICOM 26 port - 0V

5.2- DELETE J2 (CHANGING R OFF POINT 1DEG UP) : MICOM 26 port – 2.5V

LOW COOLING b.

OPTION a. R-SENSOR OFF POINT ADJUSTMENT (1 DEG. DOWN)

J1 DELETION on LOW COOLING OPTION

Default resistance (31.4 KOhms) + 1.5 KOhms = 32.9 KOhms

Operating on condition that R-SENSOR OFF point goes down 1ºC.


36

DAEWOO ELECTRONICS MANUFACTURING ESPAÑA S.A

Polígono industrial de Júndiz

C/Zurrupitieta 27, 01015 Vitoria, Spain

Tel: 00 34 945292292

Fax:00 34 945290965


ERF-384MBI | Daewoo ERF-396 Service manual

Service Manual

No-Frost

Combi-Refrigerator

DAEWOO ELECTRONICS

MANUFACTURING ESPAÑA, S.A.

. CONTENTS

1. SPECIFICATIONS

1.2. Types of the approved safety standars

2. EXTERNAL DRAWINGS

3. REAL VIEW

4. MACHINE ROOM VIEW

5. REFRIGERANT CYCLE

6. TEMPERATURES DIAGRAM

7. WIRING DIAGRAMS

8. PCB CIRCUIT DIAGRAMS

9. COMPONENTS DISASSEMBLY PICTURES

10. DOOR POSITION CHANGE PROCESS

11. EXPLODE DRAWING

12. PARTS LIST

13. PCB CONTROL FUNCTION

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