Daewoo FR-4501K User manual

Service Manual
Refrigerator
DAEWOO ELECTRONICS CO., LTD
http://svc.dwe.co.kr Jul,2000
Model : FR-4501K / FR-4501N / FR-4502K
FR-4502N / FR-4503N / FR-4504K
FR-4505K

1
TABLE OF CONTENTS
EXTERNAL VIEW ............................................................................................................................ 2
1. EXTERNAL SIZE & NAME OF PARTS ........................................................................................ 2 ~ 8
SPECIFICATIONS ............................................................................................................................ 9
1. OUTLINE ...................................................................................................................................... 9
2. ELECTRIC PARTS ....................................................................................................................... 9 ~ 12
3. POWER CORD ............................................................................................................................ 13
OPERATION AND FUNCTIONS ...................................................................................................... 14
DIAGRAM ......................................................................................................................................... 21
1. WIRING DIAGRAM ...................................................................................................................... 21
2. CIRCUIT WIRING DIAGRAM ....................................................................................................... 22
3. AIR FLOW DIAGRAM .................................................................................................................. 23
4. REFRIGERATOR CYCLE DIAGRAM .......................................................................................... 24
DISASSEMBLY AND ASSEMBLY .................................................................................................. 25
EXPLODED VIEW AND PARTS LIST ............................................................................................. 31
1. TOTAL EXPLODED VIEW ........................................................................................................... 31 ~37
2. TOTAL PARTS LIST .................................................................................................................... 38 ~ 47
3. MACHINE ROOM EXPLODED VIEW AND PARTS LIST ............................................................ 48 ~ 49

2
EXTERNAL VIEWS
1. FR-4501K
1) EXTERNAL SIZE
2) NAME OF PARTS

3
EXTERNAL VIEWS
2. FR-4501N
1) EXTERNAL SIZE
2) NAME OF PARTS

4
EXTERNAL VIEWS
3. FR-4502K
1) EXTERNAL SIZE
2) NAME OF PARTS

5
EXTERNAL VIEWS
4. FR-4502N
1) EXTERNAL SIZE
2) NAME OF PARTS

6
EXTERNAL VIEWS
5. FR-4503N
1) EXTERNAL SIZE
2) NAME OF PARTS

7
EXTERNAL VIEWS
6. FR-4504K
1) EXTERNAL SIZE
2) NAME OF PARTS

8
EXTERNAL VIEWS
7. FR-4501K
1) EXTERNAL SIZE
2) NAME OF PARTS

9
SPECIFICATIONS
1. OUTLINE
2. ELECTRIC PARTS
1) COMPRESSOR
2) RELAY
DIVISION CONTENTS
MODEL NAME FR-4501K,FR-4502K
FR-4504K,FR-4505K FR-4501N,FR-4502N FR-4503N
USABLE CAPACITY
FREEZER 101L 101L 101L
REFRIGERATOR 273L 273L 273L
TOTAL 374L 374L 374L
EXTERNAL
DIMENSION
WIDHT 708mm 710.5mm 710.5mm
DEPTH 671mm 671mm 712mm
HEIGHT 1715mm 1759mm 1759mm
REFRIGERANT R134a 90g 90g 90g
COOLING & CONTROL
SYSTEM
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
NET WEIGHT (kg)
REFRIGERANT R134a
VOLTAGE(V/Hz) 100/60 115,120/60 220/50 230/50 240/50
COMP MODEL HEL18YH-1 HPL23YH-5
PART CODE X X X
STARTING TYPE RSCR RSCR
REFRIGERANT R134a
VOLTAGE(V/Hz) 100/60 115,120/60 220/50 230/50 240/50
ASSY TYPE NAME 308NHBYY-52 181SHBYY-52
PART CODE 3018118110 3018116610
PTC RESISTANCE S068 S330
PART CODE X X X X X
OVER LOAD PART NAME 308NHB 181SHB

10
SPECIFICATIONS
3) RUNNING CAPACITOR
4) F-FAN MOTOR
5) C-FAN MOTOR
6) DEFROST HEATER
7) LAMP ASSEMBLY
REFRIGERANT R134a
VOLTAGE(V/Hz) 100/60 115,120/60 220/50 230/50 240/50
PART CODE 3016801910 400EL15110
RATED VOLTAGE 200V 350V
RATED CAPACITANCE 12uF 5uF
REFRIGERANT R134a
VOLTAGE(V/Hz) 100/60 115,120/60 220/50 230/50 240/50
TYPE NAME S6111EDF01 S6111WDF01
PART CODE 3015900741 3015900731
REVOLUTION 2200 RPM 2200 RPM
REFRIGERANT R134a
VOLTAGE(V/Hz) 100/60 115,120/60 220/50 230/50 240/50
TYPE NAME RF111EAC03 S6111WEC01
PART CODE 3015903921 3015903981
REVOLUTION 2200 RPM 2200 RPM
REFRIGERANT R134a
VOLTAGE(V/Hz) 100/60 115,120/60 220/50 230/50 240/50
SPEC (W) 148W 148W
PART CODE 3012807200 3012807100
REFRIGERANT R134a
VOLTAGE(V/Hz) 100/60 115,120/60 220/50 230/50 240/50
SPEC (W) 15W 15W
PART CODE 3013600010 3013600080

11
SPECIFICATIONS
8) TEMPERATURE FUSE
9) DOOR S/W
10) DRYER
11) THERMOSTAT
12) DEFROST TIMER
REFRIGERANT R134a
VOLTAGE(V/Hz) 100/60 115,120/60 220/50 230/50 240/50
OPERATING TEMP 77? 77?
PART CODE 3017201200 3017201200
REFRIGERANT R134a
VOLTAGE(V/Hz) 100/60 115,120/60 220/50 230/50 240/50
TYPE NAME DSD-5 DSD-5
PART CODE 3018100050 3018100050
REFRIGERANT R134a
VOLTAGE(V/Hz) 100/60 115,120/60 220/50 230/50 240/50
SPEC (gr) 15 15
PART CODE 3016805600 3016805600
FOR FR-4501K,FR-4502K,FR-4504K,FR-4505K
REFRIGERANT R134a
VOLTAGE(V/Hz) 100/60 115,120/60 220/50 230/50 240/50
TYPE NAME GNF-175D-03 GNF-175D-03
PART CODE X X
REFRIGERANT R134a
VOLTAGE(V/Hz) 100/60 115,120/60 220/50 230/50 240/50
TYPE NAME TMDEX09UD1 TMDE807UF1
PART CODE 3018120030 3018120020

12
SPECIFICATIONS
13) BIMETAL THERMO
14) PCB TRANSFORMER
15) MAIN PCB ASSY
16) FUSE (PCB)
REFRIGERANT R134a
VOLTAGE(V/Hz) 100/60 115,120/60 220/50 230/50 240/50
TYPE NAME ST-3 ST-3
PART CODE 3018120300 3018120300
FOR FR-4501N,FR-4502N,FR-4503N
REFRIGERANT R134a
VOLTAGE(V/Hz) 100/60 115,120/60 220/50 230/50 240/50
TYPE NAME S-ETP S-ETP
PART CODE X X
REFRIGERANT R134a
VOLTAGE(V/Hz) 100/60 115,120/60 220/50 230/50 240/50
TYPE NAME S-ETP S-ETP
PART CODE X X
REFRIGERANT R134a
VOLTAGE(V/Hz) 100/60 115,120/60 220/50 230/50 240/50
RATED CURRENT 1.6A 1.6A
PART CODE X X

13
SPECIFICATIONS
3. POWER CORD
NO SHAPE OF POWER CORD PART CODE DESCRIPTION REMARK
13011315000 CP-2PIN For european country
2401RA17200 CP-2PIN For other country
34006D17101 KP-30 For America & El Salvador
4401PD17101 KP-211 For Japan & Taiwan
53011300801 BP-3PIN
63011303010 # 267 For Chile
73011315310 For Israel
83011303050 BS-1363A For U.K, Middle Asia Singapore & Malaysia
93011301200 KP-551/550 For China & Australia

14
OPERATION AND FUCTIOLNS
NO CONTROL FUNCTION CONTROL OBJECTS CONTENTS REMARK
1DISPLAY LED
1.TEMPBUTTON
1) Temperature of Refrigerator can be controlled
as changing control mode according to
customer's desire.
2) Initial mode is "Mid" and whenever pressing
TEMP button,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
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.
C

15
2
CONTROL OF
TEMP. COMP F-FAN
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.
NO CONTROL FUNCTION CONTROL OBJECTS CONTENTS REMARK
OPERATION AND FUCTIOLNS

16
3
Defrost
Period Defrost mode
1. Determination of Defrosting Period
1) Total Run-time 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) Defrosting 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 15 hours 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.
4
1. Normal Defrosting
1) Starting by Defrosting Period
2) How to proceed : using heater
3) Defrosting mode and procedure
Proceeding time: 40min
Control Object: Comp On,
FAN ON,Heater Off
Terminating Condition:
if R-sensor temp. is below
even though it passes 40 min.
Limit Proceeding time
- 30 min.: D1 ERROR
D-Sensor disconnection/
short-curcuit
- 80 min.: F3 ERROR
Normal Control state
Control Object: Comp Off,
FAN OFF,Heater On
Terminating Condition:
if D-sensor temp. is over 10.
Proceeding time: 4min
Control Object: Comp Off,
FAN Off,Heater Off
Proceeding time: 4min
Control Object: Comp On,
FAN Off,Heater Off
NO CONTROL FUNCTION CONTROL OBJECTS CONTENTS REMARK
OPERATION AND FUCTIOLNS
1
2
3
1
2
3
Pre-cool
Heater Defrostiong
Pause
Fan-delay
1
2
1
2
Normal Run

17
4) Output Control and Limit Time of each Defrosting mode
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) HeaterisOnduringinitial30secondswithoutconcerning
D-sensor Temp.
5Initial
Defrosting COMP F-FAN
HTR
1. If D-sensor temp.= 3.5 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 immediately if D-sensor
temp. =3.5 in initial power input.
( No dealy for six min. )
6Prevention
of Comp COMP F-FAN 1. In order to protect Comp after Comp off, it won't re-start for six min. though
R-sensor becomes On.
NO CONTROL FUNCTION CONTROL OBJECTS CONTENTS REMARK
OPERATION AND FUCTIOLNS
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C

18
7Error
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 without concering Error.
2. DISPLAY AND HOW TO CONTROL
1) D1 ERROR
- Starting Condition: D-Sensor Disconneciton/Short-circuit
- Display: Flickering "LOW" LED
- How to control : return to limit time(30min.)
2) R1 ERROR
- Starting Condition: R-Sensor Disconnection/Short-circuit
- 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
Defrosting,Temp.
Fuse problem,
HTR Disconnection
4) C1 ERROR
- Starting Condition: Even if Comp has run
for 120 min.
continuously,
when D-sensor is
-5 .
- Display: Flickering "QUICK" LED
- How to control : impossible to control
in case of Cycle error
5) If there's no error when it enters Error mode,
All LEDs will be OFF.
NO CONTROL FUNCTION CONTROL OBJECTS CONTENTS REMARK
OPERATION AND FUCTIOLNS
C

19
8Time Delay
of Electric
Devices
1. F-FAN time delay in Comp On/Off
1) During normal running : F-fan will be On/Off
for five secs. In Continuous 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.
9Option Circuit 1
(Weak Refrigeration) 1.Option for Weak Refrigeration,Service Reference 1) When Weak Refrigeration occur,it's easy to find solution
by this.
2) Regulation of R-Sensor Off point ( -1.5 deg Down )
2.In case of Weak Refrigeration, take action as followings.
1) Resistance (R31): Standard Resistance
of R-Sensor middle-off point
in case of Normal Run
(31.4 = -1.0 )
(25.2 = 4.0 )
When change resistance 31.4 into 25.2 ,
R-sensor middle-off point will be 5.0 deg
2) Resistance (R32) : Standard resistance to make
R-Sensor Off Point in case of
Weak Refrigeration.
- R32 2.15 : R-Sensor Off Point will be down by 1.5deg
- R326.19 :R-SensorOffPointwillbe down by 4.0deg
3) SW 1 : If SW1 is off in Service, R Sensor Off Point
will be down by 1.5deg.
R31 + SW 1 ON: Middle Off Point: 0.5
( In Normal Run )
R31 + SW 1 OFF: Middle Off Point:-1.0
( In Weak Refrigeration )
NO CONTROL FUNCTION CONTROL OBJECTS CONTENTS REMARK
OPERATION AND FUCTIOLNS
C
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