Daewoo RF-405N User manual

S/M No.:

1. Model Information
Fan Cooling System
Molecular Sieve xH-9
1857 1897 2000
R-600a
FCP Button Control
375 404 375 404365365
R-134a
595
0.040kg
67 69 73
2500RPM
2400RPM
LED
67
AC 180W
225 242 268
1857
595 595 595
651 651 651
332 358
90 90 90
Weight
C-Pentane
69 73
2000
358
90
268
332
90
242
595
Condenser Fan Motor
Dryer
Capillary Tube
Defrost Shape
Defrost Type
Defrost Heater
Freezer Fan Motor
Total
Total
Refrigerator
Height
Depth
Width
Refrigerator
Electric Part
Blowing Agent
Control Type
Refrigerator Lamp
Gross Vol.
(ISO 15502)
Storage Vol.
(ISO 15502)
Diemension
Freezer
Cooling Cycle
Refrigerant Charge
SPECIFICATIONS
Model No.
Refrigerant Type
* is the Color
RN-405N** RN-425** RN-455N**RF-405N** RF-425N** RF-455N**
Evaporator Type
Condenser Type
315
Heater
ID0.7 x T0.55 x L2320
Automatic Start & Stop
90
225
595
651
120
245
Freezer
120 120 120
245 255 284
315
120
255
120
284
651
1897
AC 160W
Sheath Type
651
Fin Type
Glass Type
0.095kg
1

2. Interior Parts
SPECIFICATIONS
- Features are model dependent
( Below is RN-425N** model )
10
1. Refrigerator Shelves
2. LED Window
3. Multi Duct
4. Fresh Care Crisper (option )
5. Cover Vegetable Case
6. Vegetable Case
7. Feezer Case B
8. Freezer Case C
9. Dairy Pocket As
10. Refrigerator
Pocket
( Pocket Bottle)
11. Refrigerator
Pocket
( Pocket R *M)
12 Adjustable Foot
8
12
7
6
5
2
4
3
1
9
11
2

3. Machine (Compressor) Compartment View
SPECIFICATIONS
- Features are model dependent
( Below isRN-425N** model )
1
10
2
5
3
8 11
4
13
9
12
1. Capacitor Run
2. Power Cord
3. Suction Pipe As
4. Pipe Absorber
5. Box Relay As
6. Fixture Compress (Washer)
7. Pipe Connector B
Compressor
67
8. Compressor Absorber
9. Dryer As
10. Pipe Wire Condensor As
11. Case vaporization As
12. Drain Hose
13. Compressor Cooling Fan
3

4. Refrigerant Cycle
- Welding Point
Silver Welding ( Ag 30%) 3 Point
SPECIFICATIONS
Copper Welding ( Ag 5%) 6 Point
4

5. Temperature Diagram
; 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 minimum 1 ~ 2 days.
SPECIFICATIONS
* Features are model dependent
( Below model is RN-421N* )
Refrigerator Dial Mode
MIN : 3 ~ 6 degree
NOR : 0 ~ 3 degree
MAX : -2 ~ 0 degree
Vegetable compartment
: 1 ~ 5 degree
Freezer Mode
MAX : below -20 degree
NOR : -18 ~ -20 degree
MIN : -16 ~ -18 degree
5

6. Wiring Diagram
- For RN-405N** RN-425N** RN-455N**(R-600a) Models
SPECIFICATIONS
6

6-3. Main PCB Circuit Diagram
SPECIFICATIONS
7

FUNCTIONS
PCB Control Panel LED
CONTROL OBJECTINPUT
PCB Control Panel Buttons
1. DISPLAY
Temperature
adjustment
button for refrigerator “Super Cool”
Push “TEMP” button 30 times.
And then, push “S-COOL” button for
continuously and “TEMP” button 5 times.
Pull Down Test
“MIN” & “S-COOL”
on “MAX-NOR” & ”
MAX” flickeringly
11
18
9
ERROR “DEFROST” (F3)
ERROR “CYCLE”
(
C1
)
ERROR “DOOR S/W” (DR)
ERROR “D SENSOR” (D1)
ERROR “RT SENSOR” (RT)
TEMP STEP “MIN-NOR”
TEMP STEP “MIN”
TEMP STEP “MAX”
TEMP STEP “MAX-NOR”
Forced Defrost Test
ERROR “R SENSOR”
(
R1
)
TEMP S-COOL
TEMP STEP “NOR”
FUNCTION
Push “S-COOL” button for continuously
and “TEMP” button 5 times.
The Priorities of Error :
R SENSOR> RT SENSOR> DR S/W>
CYCLE> DEFROST
“NOR” flickerin
g
l
y
“MIN-NOR”
“MIN” flickeringly
“MIN-NOR” & ”NOR”
“MIN” & ”NOR”
“MIN” & ”MIN0NOR”
Push “TEMP” button for continuously
and “S-COOL” button 5 times.
And then, push “S-COOL” button for
continuously and “TEMP” button 5 times.
“NOR”&“S-COOL” on,
“MAX-NOR” & ”
MAX” flickeringly
Push “TEMP” button 4 times.LED “MIN-NOR” on
Push “TEMP” button 3 times.LED “MIN” on
Push “TEMP” button 2 times.LED “MAX” on
Push “TEMP” button 1 times.LED “MAX-NOR” on
Push “S-COOL” button 1 time.LED “S-COOL” on
Initially positionLED “NOR” on
OPERATIONLED DISPLAY
Reference Page No.
8

FUNCTIONS
A. “TEMP” Button
1. Temperature control of Refrigerator compartment
2. 5 step mode of successive temperature mode
3. Initial mode by power input: step “NOR”
4. Temperature will be set if the button doesn’t get pressed again within 5 sec.
- Whenever pressing “TEMP” button, setting is repeated in the order of
“NOR” →“MAX-NOR” →“MAX” →“MIN” →“MIN-NOR” (LED LAMP ON)
B. Temperature of Refrigerator Control
1. COMP and FAN will be controlled by the on/off condition of each mode.1
2. Temperature Difference of Refrigerator each step :
3. Temperature of Refrigerator
at step “NOR” OFF point: is -1.2C
4. Refrigerator ON/OFF Temp.
Difference: 3.4C
C. “S-COOL” MODE
1. Press S-COOL SWITCH
and make S-COOL led lamp on.
2. COMP & FAN are on until R-sensor
reaches to “Over Refrigeration
OFF Point”, -7C
3. After the reach of -7°C , STEP “MAX” mode continues.
4. When “S-COOL” MODE (Quick Refrigeration Mode)
lasts for about 40 minutes, it returns to general
operation mode.
D. Temperature of Freezer Control
-It will be only controlled by using
“KNOB F LOUVER” in Freezer.
PCB Control Panel LED
COMPRESSOR, FAN
CONTROL OBJECTINPUT
PCB Control Panel “TEMP” Buttons
R-sensor
2. Temperature Control of Refrigerator Compartment
Step 'MIN' 'MIN-NOR' 'NOR' 'MAX-NOR'
'
MAX
'
ON
OF
Temp
Dial
6.0 C
4.5 C 3.0 C
0.8 C -1.3C
0.8 C
-0.5 C
-2.0C -4.3 C
-6.5 C
“MAX”
“MAX-
“NOR”“MIN-NOR”“MIN”Temperature Step
2.2C2.3C1.5C1.3CTem
p
. Diff. of Each Ste
p
9

FUNCTIONS
Defrost Mode
A. When total operation time of compressor becomes: 6, 8, 10, 12 hours.
- any error mode-R1, D1, F3, C1, RT/S, Door SW error- happens.
- or, running rate of COMP (per 2hrs of total operation time) is more than 80%.
- or, total door open time is over 3 minutes.
- or, ambient temperature (RT) is more than 40C.
B. Even if the above condition “A” is not satisfied,
- Defrost mode starts immediately when total operation time of COMP is 14hrs.
- or, defrost mode starts immediately as long as total time (COMP on time + COMP off time) is 60 hrs.
A. General Defrost Mode
- How to start: By conditions of defrost
- Process :
General operation-
“PRE-COOL” - Defrost Heater on- Pause(10 min)-General operation
; PRE-COOL: When the defrost heater works, the temp. of freezer increases.
So the COMP works for 25 min before defrost mode.
- Limited Time of Defrost Heater
; 40 minutes: Heater turns off when “D SENSOR” is OPEN or SHORT.
; 60 minutes: Heater turns off after maximum 60 minutes.
- Heater Off: When the temperature at “D SENSOR” is over 10C
B. Forced Defrost Mode
- How to start: by press “TEMP” button for continuously and “S-COOL” button 5 times.
- Process: same as General Defrost Mode except “PRE-COOL”
; Heater is supposed to be on Initial 30 seconds even though the temp. at “D SENSOR” is over 10C.
(for TEST)
- How to confirm: by press “S-COOL” button for continuously and “TEMP” button 5 times.
And then, the mode displays.
- Display : led lamps “NOR”& “S-COOL” on, “MAX-NOR” & ”MAX” on/off continually
CONTROL OBJECTINPUT
Total COMP Work Time / COMP Working Rate
Total Door Open Time / RT
3. Defrost Mode
Conditions of Defrost Mode
Defrost Mode
OFFONOFF
Defrost
OFFOFFON
Fan
OFFOFFON
Compressor
PauseDefrostPRE-COOL
10

A. When initial power input or returning power failure.
if the temperature at the Defrost Sensor is below 3.5 C, Defrost Mode starts.
( It prceeds from 'PRE-COOL' ), [ PRE-COOL - Heater On - Pause (10min) - Normal Operation ]
B. Initial defrost mode starts after 'Prevention of Compressor Restart'. ( Refer to function No. 5 )
FUNCTIONS
Initial Defrost
Flow Chart of Defrost Start
Defrost Mode
CONTROL OBJECTINPUT
Total COMP Work Time / COMP Working Rate
Total Door Open Time / RT
3. Defrost Mode
Comp time >= 2 hours
Start
Total time >= 60 hours
Comp time >= 14 hours
Comp time >= 6 hours
Comp Rate >= 80%
Any Error?
RT Temp >= 40C
Total door open time >= 3min?
END
Defrosting Start
Yes
Yes
Yes
Yes
Yes
Yes
Ye
Yes
No
No
No
No
No
No
No
No
11

FUNCTIONS
R-HTR
COMP
A. Condition of LOW RT
- LOW RT Period : RT sensor below 19C
- When the temperature of RT sensor is over 20C, the system comes to be “General Operation Mode”.
- When the temp. of RT sensor is between 19°C to 20C, the system keeps the previous mode.
B. Control
- When Comp. is on, R-HTR is off.
- When it passes 6 min after COMP is off, R- HTR is on.
- COMP can’t be on within 30 min after COMP is off.
; COMP doesn’t work at the steps “Heater On” and “Pause” of “Defrost Mode”.
If COMP comes to be off for “Low Room Temp” in the steps, it seems to take over 30 minutes.
- Change of “Prevention Time of COMP Restart” :
If satisfy the following conditions simultaneously, the time changes 6 minutes.
; Accumulated running time of COMP passes 20 seconds after COMP is off.
;R-Sensor is more than ‘ON’ Point TEMP.
- When it is not the mode of LOW ROOM TEMP
or RT-Sensor is on ERROR (open or short), R-Sensor HTR is off.
- Function of R-Heater Inspection:
After initial power is on, R-HTR is on/off 5times for 10 seconds.
- When Defrost Heater is on, R-Sensor Heater is on
CONTROL OBJECTINPUT
RT
4. Function of Low Ambient Temperature (RT)
COMP
COMP. doesn’t work after COMP turns off even though R-sensor is on condition. (This is to protect comp.)
A. General operation (Temp. at the RT sensor is over 20C): The COMP can’t be on within 6 min.
B. Operation of LOW RT (Temp. at the RT sensor is below 19C):
The COMP can’t be on within 30 min.
(But the COMP can be on after 6min when the doors open more than 20 seconds.)
CONTROL OBJECTINPUT
5. Prevention of Compressor Restart
Buzzer
A. Whenever “PCB Control Panel” button’s pushed, the buzzer rings.
B. After 2 minutes power’s on, the buzzer rings 3 times.
C. Time of Buzzer: Forced Defrost Mode (3 times), Short Circuit Test (1 time)
D. When door opens, the buzzer rings every 1 minute for 5 minutes.
CONTROL OBJECTINPUT
Control Buttons / Door Switch
Initial Power Input
6. Buzzer Sound
12

FUNCTIONS
Buzzer
A. HOW TO REDUCE
- 1 min : Click FAST KEY one time on MAIN PCB.
- 30 min : If you press FAST KEY continuously, you can reduce 30 minutes on each 2.5 seconds with
buzzer.
B. Practice Use : Can be applied to reduce needless time on test.
EX
)
f
u
n
c
ti
o
n
o
f
s
t
op
f
o
r
6
min
CONTROL OBJECTINPUT
”FAST KEY”
7. Time Reduction
Display Panel
A. START : by pressing “TEMP” and “S-COOL” buttons for 5 seconds.
B. CONTROL :
- All electronic compartments are off except “Display Panel”.
- When “DEMO” mode works, led lamps will be on as next steps.
[ “MIN” →“MIN-NOR” →“NOR” →“MAX-NOR” →“MAX” →“MIN”]
C. CANCEL :
Push again “TEMP” and “S-COOL” buttons for 5 seconds at “DEMO”, or turn off power and restart.
CONTROL OBJECTINPUT
“TEMP” +”S-COOL” Buttons
8. Demonstration Function
13

FUNCTIONS
Control Resistance of R sensor OFF Point
A. LOW COOLING OPTION ( Weak Cooling )
- When the refrigeration of refrigerator is poor or weak though Fan and COMP are working continuously,
the following actions are recommended for service.
-Resistance (R47) : Default resistance (31.4Kohms)
- Resistance (R45) : Cut the “J1” off to reduce basic resistance by 1.5°C. (2Kohms up)
- Resistance (R42) : Cut the “J2” off additionally to reduce basic resistance by 1.5°C. (total 4Kohms
up)
R47 = R-SENSOR OFF point
R47 + R45 = R-SENSOR OFF point - 1.5C
R47 + R45 + R42 = R-SENSOR OFF point - 3C
CONTROL OBJECTINPUT
”J1” , “J2” On Main PCB
9. Control of R-sensor OFF Point
R-SENSOR
J2
R47(31.4K)
R45(2K)
R42(2K)
J1
14

FUNCTIONS
B. Prevention OPTION of EXCESSIVE OR LOW COOLING.
; The input voltage of MICOM and R-Sensor ON/OFF point by changing J3 & R30.
OPTION 3
(P63)
26PIN
CC3
J3
R32
R31
R30
MICOM
5V
Va
Input voltage of MICOM
R-sensor ON/OFF Point
CONTROL OBJECTINPUT
”J3” & “R30” On Main PCB
9. Control of R-sensor OFF Point
+1.7C
5V
J3(CUT), R30(NO USE)
0.3C2.0C
11
+1.4C
4V
J3(CUT), R30 (40.2kohm)
0C1.7C
10
+1.1C
3.3V
J3(CUT), R30 (19.6kohm)
-0.3C1.4C9
+0.7C
2.5V
J3(CUT), R30 (10kohm)
-0.7C1.0C8
+0.4C
2.0V
J3(CUT), R30 (6.65kohm)
-1.0C0.7C7
-0.4C
1.6V
J3(CUT), R30 (4.87kohm)
-1.8C-0.1C6
-0.7C
1.4V
J3(CUT), R30 (3.92kohm)
-2.1C-0.4C5
-1.1C
1.1V
J3(CUT), R30 (2.8kohm)
-2.5C-0.8C4
-1.4C
0.8V
J3(CUT), R30 (2kohm)
-2.8C-1.1C3
-1.7C
0.3V
J3(CUT), R30 (680ohm)
-3.1C-1.4C2
STANDARD0V
--1.4C0.3C1
INPUT VOL.(MAIN PCB)OFFON
Compared to
“STANDARD”
MICOMAPPLICATION
TEMP. STEP “3”
NO
15

FUNCTIONS
Input voltage of MICOM
R-sensor ON/OFF Point
C. Changing Difference between R-sensor “On” point and “Off” point.
; The input voltage of MICOM and R-Sensor ON/OFF DIFF. by changing J4 & R23.
CONTROL OBJECTINPUT
”J4” & “R23” On Main PCB
9. Control of R-sensor OFF Point
OPTION 2
(P64)
27PIN
CC6
J4
R28
R25
R23
MICOM
5V
Va
3.9C
5V
J4(CUT), R23(NO USE)
-1.4C2.5C
11
3.5C
4V
J4(CUT), R23 (40.2kohm)
-1.4C2.1C
10
3.2C
3.3V
J4(CUT), R23 (19.6kohm)
-1.4C1.8C9
2.8C
2.5V
J4(CUT), R23 (10kohm)
-1.4C1.4C8
2.5C
2.0V
J4(CUT), R23 (6.65kohm)
-1.4C1.1C7
2.1C
1.6V
J4(CUT), R23 (4.87kohm)
-1.4C0.7C6
1.4C
1.4V
J4(CUT), R23 (3.92kohm)
-1.C0C5
1.1C
1.1V
J4(CUT), R23 (2.8kohm)
-1.4C-0.3C4
0..7C
0.8V
J4(CUT), R23 (2kohm)
-1.4C-0.7C3
0.4C
0.3V
J4(CUT), R23 (680ohm)
-1.4C-1.0C2
1.7C
0V
--1.4C0.3C1
INPUT VOL.(MAIN PCB)OFFON
DIFFERENCE OF
ON/OFF POINT
MICOMAPPLICATION
TEMP. STEP “3”
NO
16

FUNCTIONS
LED Lamp
- ERROR DISPLAY
- To confirm error happens or not, push S-COOL” button for continuously and “TEMP” button 5 times.
- To stop the Error Display Set, push “TEMP” button 1 times, or wait 4 minutes.
- After operations back to normal, the displays come to be reset.
A. R1 ERROR
(It happens when R-Sensor is OPEN or SHORT)
- DISPLAY : STEP “NOR” LED is on & off continually.
- CONTROL :
; Controlled by the following condition of RT
; When “RT ERROR” happens at the same time, “COMP. ON/OFF Operating Time” is 16min/24min.
(Unit : min)
- CANCEL : when R-Sensor is working normally.
B. RT ERROR
(It happens when RT-Sensor is OPEN or SHORT)
- DISPLAY : STEP “MIN-NOR” LED is on & off continually.
- CONTROL : Delete the conditions of “RT-sensor Control” and operate normally.
- CANCEL : when RT-Sensor is working normally.
C. D1 ERROR
(It happens when D-Sensor is OPEN or SHORT)
- DISPLAY : STEP “MIN” LED is on & off continually.
- CONTROL : Return to next limit defrost time (40 min)
- CANCEL : when D-Sensor is working normally.
D. DR ERROR
(It happens when the system senses door opens more than 1 hour.)
- DISPLAY : STEP “MIN-NOR”, “NOR” LED Lamps are on & off continually.
- CONTROL : Deletion of function related door switch sensing
- If door switch (open & close) is sensed, the error is terminated
automatically
E. C1 ERROR
(When D-Sensor is more than -5C, Comp operates over 3 hrs)
- DISPLAY : STEP “MIN” & “NOR” LED Lamps are on & off continually.
- CONTROL : The system is normally operating
- CANCEL : When Comp is off, D-Sensor is less than -5C.
F. F3 ERROR
Return to next step after max defrost time.
( 60 minutes )
6.1- DISPLAY : STEP “MIN” & “MIN-NOR” LED Lamps are on/off continually.
6.2- CONTROL : At Defrost Mode, Deletion of “PRE-COOL” Mode.
6.3- CANCEL : Completion of defrost returned by D-Sensor.
- If the appliance is normal (no error), just 'MAX-NOR' and 'MAX' LED flicker in Error Mode.
CONTROL OBJECTINPUT
PCB Control Panel Buttons / Door
10. Error Display
flicker
- To Confirm Errors:
Push “S-COOL” for
continuously and “TEMP”
button 5 times.
- The Priorities of Error :
R1→RT→D1→DR→C1→F3
Defrost
“MIN”,
“MIN-
F3
Cycle“MIN”,
“NOR”
C1
DR Switch“MIN-
NOR”,
DR
D sensor
“MIN
”
D1
RT sensor
"MIN-NOR"
RT
R sensor
“NOR”
R1
ERRORLEDCODE
6/34
~13C
10/30
~19C
16/24
~29C
20/20
COMP. Operating TIME
(ON/OFF)
29C ~RT sensor TEMP
17

11. Function Key Summary Table
( 'MIN' - 'MIN/NOR' - 'NOR' - 'MAX/NOR' - 'MAX' - 'MIN' )
Forced Defrost Mode
Pull Down Mode
Error Display
Demo Mode
Display
In Error Mode, you can find the current mode ( What mode is operationg ) and what kinds of Error happen.
How to terminate Temp + S-Cool button for 5 seconds
LED Lamps will be on as next steps.
Display 'MAX-NOR', 'MAX' LED flicker (When no error happens)
How to enter the Mode Temp + S-Cool button for 5 seconds
How to enter the Mode S-Cool + Temp button 5 times
How to terminate emp button 1 time or after 4 minutes
How to terminate After Mode ends ( about 30 hour )
Display 'MIN', 'S-Cool' LED ON (In Error Mode)
Display 'NOR', 'S-Cool' LED ON (In Error Mode)
How to enter the Mode Temp button 30 times
How to enter the Mode Temp + S-Cool button 5 times
How to terminate After Mode ends ( about 1 hour )
FUNCTIONS
MODE Action Button / Remark
18

DISASSEMBLY
1. Front PCB
No No
Put a (-) driver into aperture locating the botton of Unscrew 2 points with (+) driver and Separate FCP from
Panel F control. ( Be careful not to scratch the surface. ) Panel F control.
Lift up the Panel F control and Disconnect this from Deco F control can be separated easily.
housing.
Procedure
3
4
Procedure
1
2
19