Daewoo FR-4501K, FR-4502N, FR-4502K, FR-4503N, FR-4505K Service Manual

S/M No. :

FR4501KN02

Service Manual

MODEL :

FR-4501K / FR-4501N FR-4502K / FR-4502N

FR-4503N / FR-4504K FR-4505K

✔

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 (http://svc.dwe.co.kr).

D AEW OO ELECTR ONICS CO., LTD.

http : //svc.dwe .co.kr

MAY. 2001

PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY

SAFETY AND PRECAUTIONS

1) For starters, be sure to check any chances of the leakage of electricity."

2) You could handle a part in the vicinity of electricity after unplugging.

3) You should put on rubber gloves to prevent an electric shock on operation test.

4) Make sure the rated current,voltage,capacity before using an instrument."

5) Keep your wet hands away from the metal goods in the freezer compartment not to be frostbitten.

6) Be careful not to let water permeate the electric part in the machine room.

7) With door open during your working,you might be damaged by door."

8) You should give a title to the refrigerator for your safe after removing the breakable goods inside the refrigerator.

9) You'd better use cotton gloves if you fix it up around the evaporator

TABLE OF CONTENTS

EXTERNAL VIEWS ................................................................................................................ 2

1. EXTERNAL SIZE & NAME OF PARTS...................................................................................... 2

SPECIFICATIONS .................................................................................................................. 9

1. OUTLINE ..................................................................................................................................9

2. ELECTRIC PARTS ....................................................................................................................10

3. POWER CORD...........................................................................................................................15

OPERATION AND FUNCTIONS..............................................................................................16

DIAGRAM.................................................................................................................................22

1. WIRING DIAGRAM.....................................................................................................................22

2. CIRCUIT WIRING DIAGRAM.....................................................................................................23

3. AIR FLOW DIAGRAM.................................................................................................................24

4. REFRIGERATOR CYCLE DIAGRAM........................................................................................25

DISASSEMBLY AND ASSEMBLY...........................................................................................26

EXPLODED VIEW AND PARTS LIST......................................................................................32

1. TOTAL EXPLODED VIEW.........................................................................................................32

2. TOTAL PARTS LIST...................................................................................................................39

3. MACHINE ROOM EXPLODED VIEW AND PARTS LIST..........................................................66

1

EXTERNAL VIEW

1. FR-4501K

1) EXTERNAL SIZE

2) NAME OF PARTS

?

2

2. FR-4501N

1) EXTERNL SIZE

EXTERNAM VICE

2) NAME OF PARTS

?

3

EXTERNAM VICE

3. FR-4502K

1) EXTERNAL SIZE

2) NAME OF PARTS

?

4

4. FR-4502N

1) EXTERNAL SIZE

EXTERNAM VICE

2) NAME OF PARTS

?

5

EXTERNAM VICE

5. FR-4503N

1) EXTERNAL SIZE

2) NAME OF PARTS

?

6

6. FR-4504K

1) EXTERNAL SIZE

EXTERNAM VICE

2) NAME OF PARTS

?

7

EXTERNAM VICE

7. FR-4505K

1) EXTERNAL SIZE

2) NAME OF PARTS

?

8

SPECIFICATIONS

1. OUTLINE

DIVISION CONTENTS

MODEL NAME

FREEZER 101ß§ 101ß§ 101ß§

USABLE CAPACITY

EXTERNAL DIMENSION

REFRIGERANT R134a 90g 90g 90g

COOLING & CONTROL SYSTEM

NET WEIGHT (kg)

REFRIGERATOR 273ß§ 273ß§ 273ß§ TOTAL 374ß§ 374ß§ 374ß§ WIDHT 708mm 710.5mm 710.5mm DEPTH 671mm 671mm 712mm HEIGHT 1715mm 1759mm 1759mm

COOLING SYSTEM Fan Cooling System Fan Cooling System Fan Cooling System DEFROST SYSTEM Fin Evaporator Forced Fin Evaporator Forced Fin Evaporator Forced DEFROST CONTROL Automatic Start & Stop Automatic Start & Stop Automatic Start & Stop

FR-4501K,FR-4502K FR-4504K,FR-4505K

FR-450N,FR-4502N FR-4503N

9

SPECIFICATIONS

3. POWER CORD

NO SHAPE OF POWER CORD PART CODE DESCRIPTION REMARK

1 3011315000 CP-2PIN For european country

2 3010097000 CP-2PIN For other country

3 4006D17101 KP-30 For America & El Salvador

4 3010096800 KP-211 For Japan & Taiwan

5 3011300801 BP-3PIN

6 3011303010 # 267 For Chile

7 3011315310 For Israel

8 3011303050 BS-1363A

"For U.K, Middle Asia Singapore &

Malaysia"

9 3011301200 KP-551/550 For China & Australia

15

OPERATION AND FUNCTIONS

NO

1 Display LED

CONTROL

FUNCTION

CONTROL

OBJECTS

CONTENTS REMARK

1.TEMP BUTTON

1) Temperature of Refrigerator can be controlled as changin control mode according to customer's desire.

2) Initial mode is "Mid" and whenever pressing TEMP buton, control mode proceeds as follows.

Low -> Mid -> High -> Quick -> Low

3) If TEMP.button is pressed, control mode is set in 3 Sec.

2.QUICK MODE

1) If QUICK mode is set by TEMP.button, QUICK LED is on.

2) Maximum time of QUICK mode is 40 min.

3) If Refrigerator sensor (R-S) is below -3.0°C in QUICK mode, QUICK mode can be finished immediately within 40min.

4) If QUICK mode is finished, it returns to the dial mode before QUICK mode.

16

OPERATION AND FUNCTIONS

NO

2 Control of

CONTROL

FUNCTION

Temp

CONTROL

OBJECTS

COMP F-FAN

CONTENTS REMARK

1. How to control Temperature of Refrigerator

1) Whenever TEMP.button is pressed, control mode is circulated as follows:

LOW -> MID -> HIGH -> QUICK -> LOW

2) LEDs will indicate control mode according to TEMP.button.

3) Comp and F-fan are controlled by R-Sensor.

2. ON/OFF point of each control mode

1) Comp and F-fan are controlled ON/OFF point of each control mode. ( ON/OFF point of R-SENSOR )

2) F-FAN is delayed for 1 min. after COMP is ON/OFF.

3) ON/OFF DIFF. Of Refrigerator = 2.0 deg.

4) STEP DIFF. Of Refrigerator = 2.5 deg.

17

OPERATION AND FUNCTIONS

NO

3 Defrost

CONTROL

FUNCTION

Period

CONTROL

OBJECTS

Defrost mode 1. Determination of Defrosting Period

1) Total Run-tim of Comp : 10,11,12,13,14,15 hours

2) Run-ratio of Comp : over 80%

3) Total times of Door opening : over 3 times

4) Total time (Comp On + Comp Off): 60 hours

2. Explanation

1) Derosting starts with the following conditions, in case total comp-run time passes 9 hours

- when an Error occurs

- when running-rate of Comp is more than 80%

- when total Door-opening times is more than 3 times

2) Defrosting starts unconditionally at each hour after total Comp-run time passes 9 hours if terms of 1) is occurred.

3) Defrosting starts immediately when Total run-time is more than 15hours under the condition of 1),2) is not satisfied.

4) Defrosting starts immediately when Total time is more than 15 hours under the condition of 1),2),3) is not satisfied.

CONTENTS REMARK

4 Defrosting

Mode

Comp Fan Heater

1. Normal Defrosting

1) Starting by Defrosting Period

2) How to proceed : using heater

3) Defrosting mode and procedure

PRE-

FAN ON,Heater Off

¨ç

Proceeding time: 40min

¨è

Control Object: Comp On

COOL

if R-sensor temp. is below

-4°C even though it passes 40 min.

- 30 min.: D1 ERROR D-Sensor disconnection/

HEATER

short-curcuit

Defrosting

- 80 min.: F3 ERROR Normal Control state

FAN OFF,Heater On

¨é

Terminating Condition:

¨ê

Limit Proceeding time

¨ë

Control Object: Comp Off,

if D-sensor temp. is over 10°C

18

¨ì

Terminating Condition:

OPERATION AND FUNCTIONS

NO

CONTROL

FUNCTION

CONTROL

OBJECTS

CONTENTS REMARK

¨ç Proceeding time: 4min ¨è Control Object: Comp Off,

PAUSE

FAN Off,Heater Off

¨çProceeding time: 4min

Fan Delay

¨è Control Object: Comp On, FAN Off, Heater Off

Normal Run

4) Output Control and Limit Time of each Defrosting mode

5 Initial

Defrosting

6 Prevention of

Comp

COMP F-FAN HTR

COMP F-FAN

2.Forced Defrosting

1) Start: Defrosting starts by pressing Temp.control s/w five times in a row when door is open.

2) End : No function

3) Process: using Heater

4) Defrosting mode and procedure: same as Normal Defrosting( Skip pre-cool mode )

5) Heater is On during initial 30 seconds without conserning D-sensor Temp.

1. If D-sensor temp. *3.5°C in the initial power input, normal defrosting mode begins without concerning Comp run-time ( include Pre-cool mode )

2. Defrosting begins after doing Comp restart prevention function with dealy for six min. in initial defrosting mode.

3. Comp will be On imme diately if D-sensor temp. ]3.5°C in initial power input. ( No dealy for six min. )

1. In order to protect Comp after Comp ioff, it won’t re-start for six min. though R-sensor becomes On.

19

OPERATION AND FUNCTIONS

NO

CONTROL

FUNCTION

CONTROL

OBJECTS

7 Error Display LED 1. ERROR DISPLAY

1) How to start: Push Temp. control s/w for five secs. In Continuous

-run mode.

2) How to end: It returns automatically after 20 secs in Error mode with out concering Error.

2. DISPLAY AND HOW TO CONTROL

1) D1 ERROR

- Starting Condition: D-Sensor Disconneciton/Shortcircuit

- Display: Flickering "LOW" LED

- How to control: return to limit time (30min.)

2) R1 ERROR- Starting Condition: R-Sensor Discon-nection/Shortcir cuit

- Display: Flickering "MID" LED

- How to control: control continuously Comp,F-fan to be On(30min.) and Off(30min.)

3) F3 ERROR - Starting Condition: Heater 80min. ends

- Display: Flickering "HIGH" LED

- How to control: impossible to control in case of Heater Defrostng,Temp.Fuse problem,HTR Disconnection

CONTENTS REMARK

8 Time Delay of

Electric Devices

4) C1 ERROR- Starting Condition: Even if Comp has run for 120min. continuously,when D-sensor is¡Ã-5°C

- Display: Flickering "QUICK" LED

- How to control: impossible to contro in case of Cycle error

5) If there's no error when it enters Error mode, All LEDs will be OFF. HTR disconnection.

1. F-FAN time delay in Comp On/Off

1) During normal running: F-fan will be On/Off 1 min. after Comp On/Off

2) When initial power input: F-Fan will be ON 4 mins. After Comp On

2. F-FAN TIME DELAY BY DOOR S/W

1) After 6 mins.of initial power input OPEN DR S/W -> CLOSE : F-fan work delay for 20 secs.

2) Before 6 mins.of initial power input OPEN DR S/W -> CLOSE : F-fan work for 20 secs. immediately.

3) when it has nothing to do with Initial power input. OPEN DR S/W ->CLOSE: F-fan changes into be Off. immediately.

20