Daewoo RFP-15 User manual

Service Manual
SN : RFP1512301

1. SPECIFICATION
1-1. Model Information -------------------------------------------------------------------------------------------------------------------------- 2
1-2. Outside Dimensions & Interior Parts --------------------------------------------------------------------------------------------------
-
3
1-3. Machine(Compressor) Compartment View ------------------------------------------------------------------------------------------ 5
1-4. Refrigerant Cycle --------------------------------------------------------------------------------------------------------------------------
-
6
1-5. Temperature Diagram --------------------------------------------------------------------------------------------------------------------
-
7
1-6. Wire Diagram -------------------------------------------------------------------------------------------------------------------------------
-
8
1-7. Main PCB Circuit Diagram --------------------------------------------------------------------------------------------------------------- 9
2. FUNCTIONS
2-1. 'PCB VOLUME' Control-------------------------------------------------------------------------------------------------------------------
-
10
2-2. Temperature Control of Refrigerator compartment -------------------------------------------------------------------------------- 11
2-3. Defrost Mode -------------------------------------------------------------------------------------------------------------------------------- 12
2-4. Function of Low Ambient Temperature ----------------------------------------------------------------------------------------------- 14
2-5. Prevention of Compressor Restart ----------------------------------------------------------------------------------------------------
-
14
2-6. Buzzer Sound -------------------------------------------------------------------------------------------------------------------------------
-
14
2-7. Time Saving Function --------------------------------------------------------------------------------------------------------------------
-
15
2-7. Control of R-sensor OFF Point ---------------------------------------------------------------------------------------------------------
-
16
2-8. Error Display --------------------------------------------------------------------------------------------------------------------------------
-
17
3. DISASSEMBLY
3-1. Door Switch ---------------------------------------------------------------------------------------------------------------------------------
-
18
3-2. Multi Flow Duct As(Cover / Knob Contl F / R) --------------------------------------------------------------------------------------
-
19
3-2. Multi Flow Duct As (PCB Volum & R-Sensor) --------------------------------------------------------------------------------------
-
20
3-2. Multi Flow Duct As (Lamp Socket & Knob F Contl A) ----------------------------------------------------------------------------
-
21
3-2. Multi Flow Duct As (Lamp) --------------------------------------------------------------------------------------------------------------
-
22
3-3. Case Vapori --------------------------------------------- ----------------------------------------------------------------------------------
-
22
3-4. Louver F As --------------------------------------------- ------------------------------------------------------------------------------------ 23
3-5. Door R ----------------------------------------------------------------------------------------------------------------------------------------
-
24
3-6. DooR F(Including Reinforce & Roller)-------------------------------------------------------------------------------------------------
-
25
4. How to Charge R-600a Refrigerant --------------------------------------------------------------------------------------------------------
-
26
5. Part List
5-1. Cabinet Compartment --------------------------------------------------------------------------------------------------------------------
-
31
5-2. Machine(Compressor) Compartment -------------------------------------------------------------------------------------------------
-
32
5-3. Freezer Compartment --------------------------------------------------------------------------------------------------------------------
-
33
5-4. Fresh Food Compartment ---------------------------------------------------------------------------------------------------------------
-
34
5-5. Door Compartment ------------------------------------------------------------------------------------------------------------------------
-
35
CONTENTS
1

1-1. Model Information
1-1-2. For Europe
Coo
lin
g
Cyc
l
e
Refrigerant Type R-134a
Refrigerant Charge 0.085kg
Evaporator Type Fin Type
Diemension
(unit: mm)
Net Width (Packing) 485(540)
Net Depth (Packing) 617(654)
Net Height (Packing) 1227(1278)
Storage Vol.
IEC 62552
(unit: L)
Total 141
Freezer 41
Refrigerator 100
Control Type Knob & Digital Smart Control
Gross Vol.
IEC 62552
(unit: L)
Total 165
Freezer 61
Refrigerator 104
1. SPECIFICATIONS
Buyer No. -- --
Factory No. RFP-15*
174NHBYY-52
135℃
69℃
Run Capacitor 350V/4μf
O.L.P
Model
Resistance(25℃)
Model
Open Temp
Close Temp
Model
Compressor
Motor Type
NW52LHP-L
RSCR
P.T.C
RSCR S220
22Ω± 20%
Blowing Agent C-Pentane
Electric Part
Freezer Fan Motor DC 12V, 1500 ~ 2200RPM(Max 3350RPM)
Refrigerator Lighting LED Bulb 0.6W x 1EA
Net Weight (Packing) 38(43)kg
Desiccant: Molecular Sieve xH-9, 11g
Capillary Tube (unit: mm) ID0.6 x T0.6 x L2200
Heater
Defrost Type Automatic Start & Stop
Defrost Heater AC220V, 100W
Defrost Shape Sheath Type
Coo g Cyc e
Condenser Type Inner Cabinet Type (Both Sides)
Dryer
2

1-2. Outside Dimensions & Interior Parts
1-2-1. Outside Dimensions
1. SPECIFICATIONS
3

1-2. Outside Dimensions & Interior Parts
1-2-3. Interior Parts for Glass Shelves
1. SPECIFICATIONS
For More Parts in details, Refer to 3 Dimensional Drawings in 5 Part Lists.
1. Panel Table Board A
2. Shelf Glas As
3. Cover Vegetb Case
(Fresh Case Cover)
4. Case Vegetb
(Fresh Case)
5. Case Icing
6. Case F *T
7. Case F *U
8. Pocket R *T
9. Pocket R *U
10. Refrigerator Door
11. Freezer Door
4

1-3. Machine (Compressor) Compartment View
1-3-2. New Vapori Case
1. SPECIFICATIONS
14
1
2
3 4 5 6 7 8 1594
12 11 13
10
1. Base M/PCM As
2. Cord Power As
3. Pipe *S PLT
4. PipeHot
5. Pipe SVC
6. SwitchPRelayAs
7. Absorber Comp
8. Special WASR
9. Compressor
10. Pipe Suc Conn
11. DryerAs
12. Harness Earth
13. SuctionPipeAs
14.CaseVapori
15.PipeConnDel
5

1-4. Refrigerant Cycle
1. SPECIFICATIONS
Compressor PipeSucConn
Dryer
PipeSuction
Evaporator
PipeSVC
- Welding Points
- Flow of Refrigeration Cycle
Copper Welding ( Ag 5%) 6 Points
Silver Welding ( Ag 35%) 3 Points
CapillaryTube
CapillaryTube
Dryer
PipeHot
Pipe*SPLT
Compressor
PipeSucConn
Pipesuction
Evaporator
High Low
6

1-5. Temperature Diagram
1. SPECIFICATIONS
Refrigerator Step Mode
弱:5~6℃
中:2~4℃
强:0~2℃
Fresh Case Compartment
-1 ~ 3℃
Freezer Mode
弱:‐18~‐20℃
中:‐19~‐21℃
强:‐21~‐23℃
; 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.
7

1-6. Wire Diagram
1-6-2. For Europe
1. SPECIFICATIONS
8

1-7. Main PCB Circuit Diagram
1-7-2. For Europe / Korea (Code : 30143L9070)
1. SPECIFICATIONS
9

2. FUNCTIONS
-PCB Volume
CONTROL OBJECTINPUT
- Turn 'DIAL KNOB' on the 'COVER M/FLOW
DUCT'.
2-1. "PCB VOLUME" Control
<'COVER M/FLOW DUCT AS': Air Duct Device in the Refrigerating Compartment>
- Temperature is controlled by "PCB Volume" assembled with "Dial Knob".
- 6step(1step ~ 6step) mode of successive temperature mode
R SENSOR
PCB VOLUME
DIAL KNOB
R SENSOR
10

2. FUNCTIONS
A. COMP and FAN will be controlled by the on/off condition of each mode.
B. Temperature Difference of Refrigerator each step :
C. Temperature of Refrigerator at Mid-'Dial Knob' OFF point :
- DR_24KB Model : -5.1℃,
- COMPRESSOR
-FAN
CONTROL OBJECTINPUT
- Turn 'DIAL KNOB'
- R sensor
2-2. Temperature Control of Refrigerator Compartment
1 2345
8.9 8.5 5.1 4.4 3.3
-1.0 -1.3 -4.6 -5.1 -6.2
6
2.6
-6.8
OFF(℃)
ON(℃)
STEP
D. Refrigerator ON/OFF Temp.
Difference: 9.0C
E. Temperature of Freezer Control
-It will be only controlled by using “KNOB F LOUVER” in the Freezer Comaprtment.
11

2. FUNCTIONS
- Compressor
-FFan
- Defrost Heater
A. Defrost Mode Operation conditon
(1) In case accumulated Refrigerator run times: 6, 8, 10, 12 hours,
- when there occur any errors:
R1, D1, C1, RT, Door SW error etc. (Check "2-9. ERROR DISPLAY")
- or, running rate of COMP (per 2hrs of accumulated operation time) is more than 90%
- or, accumulated door open time is over 2 minutes
(2) Even if the above condition is not satisfied,
- defrost mode starts immediately when accumulated compressor run time is 12hrs.
- or real run time is 72hrs
B. Normal Defrost Mode
CONTROL OBJECTINPUT
- Accumulated Compressor Run Time
- Running Time Ratio of Compressor
- Accumulated Door Open Time
- Ambient temperature (RT)
2-3. Defrost Mode
'PRE-COOL'
• Comp ON, Fan On, Heater OFF
• Comp runs for 30min or Comp off point -3℃
before defrost mode
• run time 6,8 defrost mode PRE-COOL pass
• Comp OFF, Fan OFF, Heater ON
H t ff h 'D
S'i 10
℃
C. Forced Defrost Mode
- How to start:
(1) by press Door S/W for continuously and Control 'Dial Knob'(MIN -> MAX) 1 times.
(2) or, by press 'Test Key' 3 times on Main PCB
- If appliance has any error, Forces Defrost Mode don't start.
- Process: same as Normal Defrost Mode except 'PRE-COOL'
※Heater is supposed to be on Initial 30sec. even though the temp. at “D SENSOR” is
over 10℃. (for TEST)
- How to confirm: If Force Defrost Mode start, you can buzzer sound
Defrost
Heater on
•
H
ea
t
er o
ff
w
h
en
'D
-
S
ensor
' i
s over
10
℃
.
• Heater off after 60min. at normal control.
• Heater off after 20min. in case D1 error.
Pause
• Comp OFF, Fan OFF, Heater OFF
• 15minutes.
Normal
Operation
12

2. FUNCTIONS
2-3. Defrost Mode
D. Flow chart of How to Start Defrost Mode
※A.R.R.T. : Accumulated Refrigerator Run Times
※R.R.O.C. : Running Rate of Compressor
Start
Yes
No
A.R.R.T.= 6,8,10,12hours
No
Yes
Any Error
No
Yes
R.R.O.C.(per 2hrs of A.C.R.T.)≥90%
No
Yes
Accumulated Door Open Time≥2min.
No
Yes
A.C.R.T.≥12hours
Defrost Mode Start End
13

2. FUNCTIONS
-RHTR
-COMP
A. Condition of LOW RT
- RT sensor below 21℃
- When the RT sensor is over 22℃, the system comes to be “General Operation Mode”.
- When the RT sensor is between 21°C to 22°C, the system keeps the previous mode.
B. Control
- When the temp of RT sensor is between 10°C to 22°C, COMP on/off diff is 5°C
- When the temp of RT sensor is below 10°C, COMP on temp is 2°C down, off temp is 2°Cup
CONTROL OBJECTINPUT
RT
2-4. Function of Low Ambient Temperature (RT)
COMP
It takes several minutes to protect Compressor:
(1) 6 minutes after Comp off
(2) 30 minutes at operation of Low RT, but 6 minutes when the doors open more than 20 seconds
CONTROL OBJECTINPUT
2-5. Prevention of Compressor Restart
Buzzer
A. When Forced Defrost Mode start, the buzzer rings 3times.
B. After 2 minutes power’s on, the buzzer rings 3 times.
C. At Short Circuit Test, the buzzer rings 1 times.
D. When door opens, the buzzer rings every 1 minute for 5 minutes.
CONTROL OBJECTINPUT
- Forced Defrost Mode start
- Door Switch
- Initial Power Input
2-6. Buzzer Sound
N/A
14

2. FUNCTIONS
Buzzer
A. How to Save
- 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. Example for usage: when reduce test time
CONTROL OBJECTINPUT
”FAST KEY”
2-7. Time Saving Function
MAIN PCB
Test Key
(purchasedseparately)
Fast Key
(purchased separately)
LED
15

2. FUNCTIONS
Control Resistance of R sensor OFF Point
- When the refrigeration of refrigerator is poor or weak though Fan and COMP are working continuously,
the following actions are recommended for service.
(1) Resistance (R25) : Default resistance (31.4Kohms)
(2) Resistance (R26) : Cut the “J4” off to reduce basic resistance by 1.5°C. (2Kohms up)
(3) Resistance (R27) : Cut the “J1” off additionally to reduce basic resistance by 1.5°C. (total 4Kohms
up)
※R25 = R-SENSOR OFF point
R25 + R26 = R-SENSOR OFF point - 1.5°C
R25 + R26 + R27 = R-SENSOR OFF point - 3°C
CONTROL OBJECTINPUT
”J1” , “J2” On Main PCB
2-8. Control of R-sensor OFF Point
J4
16

2. FUNCTIONS
- ERROR DISPLAY
- If appliance has any errors, LED on the Main PCB is flickering.
- If the appliance is normal (no error), LED IS off.
A. 'R1' ERROR
: It happens when R-Sensor is OPEN or SHORT.
(1) LED DISPLAY: Shortly flickering(0.3sec.) 1 times.
(2) CONTROL:
Controlled by the following condition of RT
※If 'RT ERROR' happens at the same time, “COMP. ON/OFF Operating Time” is 15min/13min.
(3) RELEASE: When R-Sensor is working normally.
B. 'RT' ERROR
: It happens when RT-Sensor is OPEN or SHORT.
(1) LED DISPLAY: Shortly flickering(0.3sec.) 2 times.
(2) CONTROL: Delete the conditions of 'RT-sensor Control' and operate normally.
(3) RELEASE: When RT-Sensor is working normally.
C. 'd1' ERROR
: It happens when D
-
Sensor is OPEN or SHORT
LED Lamp
CONTROL OBJECTINPUT
Sensor Error
2-9. Error Display
5/16
~13
15/13
~38
40/10
38~
COMP. Operating ON/OFF TIME
(unit:min.)
RT sensor TEMP (unit:℃)
flicker
: It happens when D
-
Sensor is OPEN or SHORT
.
(1) LED DISPLAY: Shortly flickering(0.3sec.) 3 times.
(2) CONTROL: Return to next limit defrost time (40 min)
(3) RELEASE: When D-Sensor is working normally.
D. 'DR' ERROR
: It happens when the system senses door opens more than 1 hour.
(1) LED DISPLAY: Shortly flickering(0.3sec.) 4 times.
(2) CONTROL: Delete function relating to door switch sensing
(3) RELEASE: When sensing close from door S/W.
※When pusing 'TEST KEY' on the main PCB,
LED is long(1.0sec.) flickering several times.
ex. 'Forced Defrost Mode:' long flickering 2 times
-To Confirm Errors:
Check LED on the main PCB
- The Priorities of Error :
R1→RT→D1→DR
DR Switch4timesDR
D sensor3timesd1
RT sensor2timesRT
R sensor1timeR1
ERRORLEDCODE
17

3-1. Door Switch
3. DISASSEMBLY
No No
Put a (-) driver in the upper part as above picture.
And lift up 'Door Switch' carefully.
Procedure Procedure
1
3
2
Put a (-) driver in the lower part as above picture.
And lift up 'Door Switch' carefully. Disconnect the wire housing.
18

3. DISASSEMBLY
3-2. Multi Flow Duct As(Cover / Knob Contl F / R)
No No
Before Assembly
* Locking Points * Assembling Direction
- Screw : 4Points
■
- Assembling - Disassembling
Hook : 8Points ●
Tilt at an angle of 45 degrees Pull forward. The 2 Hooks, located
to connect wire housing. at the bottom not to be broken.
Procedure Procedure
12
Remove Knob F( Left ) with Hand or Tool
* When removing Knob R(Right), Do as same way.
Remove 3 "Cap F Luvr" with (-) driver.
(Position : Refer to above Picture)
19