Samsung RS20NCSL User manual

RS20NCSL
RS20NCSW
RS20NESL
RS20NESW
Model:
SIDE-BY-SIDE REFRIGERATOR
SAMSUNG Home Appliance Service
For the latest parts information,
please access to our service web site
(http://www.e4buyer.com/refrigerator)

2
IMPORTANT SAFETY NOTICE
The service guide is for service men with adequate backgrounds of
electrical, electronic, and mechanical experience. Any attempt to repair
a major appliance may result in personal injury and property damage.
The manufacturer or dealer cannot be responsible for the interpretation
of this information.
SAMSUNG ELECTRONICS
Technical Service Guide
Copyright ⓒ2002
All rights reserved. This service guide may not be reproduced in whole or in
part in any form without written permission from the SAMSUNG ELECTRONICS
Company.
WARNING

3
Contents
1. SAFETY WARNINGS 4
2. INSTRUCTION 6
3. INSTALLATION 7
4. NOMENCLATURE 8
5. SPECIFICATIONS 9
6. INTERIOR VIEWS AND DIMENSIONS 12
7. FREEZING CYCLE AND COOL AIR CIRCULATION ROUTE 14
8. MECHANICAL DISASSEMBLY 16
9. FUNCTIONS AND OPERATION 22
10. CIRCUIT DESCRIPTION 27
11. DIAGNOSIS AND TROUBLESHOOTING 36
12. ILLUSTRATED PARTS CATALOGUE 42
APPENDIX ⅠⅠ(CIRCUIT DIAGRAM) 57

4
1. SAFETY WARNINGS
● Pull the power plug out already for the change or repair of electric parts.
→ Be careful the electric shock.
● When exchanging the parts, use the correct parts.
→ Check the model name, rating voltage, rating current, running
temperature symbols.
● When troubleshooting, connect firmly the types of harness.
→ Make not to be separated when some power is imposed.
● Check the traces of water infiltration at the electric parts.
→ If there is a trace of water infiltration, exchange or tape the parts.
● Check the assemble status of parts after troubleshooting.
→ It should be done indiscriminately as before the repair.
● Check the use circumstance of refrigerator.
→ If the refrigerator is installed at the place that is damp or wet, or
status of installation is unstable, change the installation place.
● Do earth in case of need.
→ Particularly, Be sure to earth when there is a risk of an electric
leakage by humidity or wetness.
● Do not use multi plugs in a plug socket at the same time.
Check the power cord and socket is damaged, pressed, squeezed, or
fired.
→ If the plug or plug socket is damaged, repair or exchange that
immediately.
● Do not store the foods unstable or bottles in the freezing room.
● Do not repair the refrigerator by user himself.
● Do not store another materials except the foods.
→ Drugs or scientific materials : difficult to keep a precise temperature.
→ The inflammables(alcohol, benzene, ether, LP gas, butane gas etc.):
have a risk of explosion.

5
1. SAFETY WARNINGS
CAUTION / WARNING SYMBOLS DISPLAYED SYMBOLS
Indicates that a
danger of death
or serious injury
exists.
Indicates that a risk
of personal injury
or material damage
exists.
means “Prohibition”.
means “Do not disassemble”.
means “No contact”.
means ”The things to
be followed”.
means “Earth to prevent Electric
shock”.
means “Power cord should be
unplugged from the consent”
Warning
Caution
Caution
Use the rated components
on the replacement.
● Check the correct model, rated
voltage, rated current, operating
temperature and so on.
Pull the power plug out to
exchange the interior lamp
of the refrigerator.
● It may cause electric shock.
On repair, make sure that
the wires such as harness
are bundled tightly.
● Bundle tightly wires in order not to
be detached by the external force and
then not to be wetted.
Check if there is any trace
indicating the permeation
of water.
● If there is that kind of trace, change
the related components or do the
necessary treatment such as taping
using the insulating tape.
After repair, check the
assembled state of
components.
● It must be in the same assembled
state when compared with the state
before disassembly.
On repair, remove
completely dust or other
things of housing parts,
harness parts, and check
parts.
● Cleaning may prevent the possible
fire by tracking or short.

6
2. INSTRUCTION
A newly developed SAMSUNG side by side refrigerator has the following
characteristics.
1) Multi-Flow System
Cool air circulates through multiple vents on each shelf level. This provides even
distribution of cooling inside of freezer/refrigerator and keeps food fresher for longer.
2) High humidity for fresher food
You can keep food, fruit and vegetables fresh for longer because your refrigerator
supplies highly humidified cold air.
3) Door Alarm
When the refrigerator door is left open for more than two minutes, a musical alarm is
automatically triggered. This feature helps you save electricity and preserve stored foods.

3. INSTALLATION
7
1) To protect refrigerator in movement
Use padded hand truck as shown. If entrance width is
less than 30 , remove doors prior to installation and
reattach doors according to procedure below.
2) Remove all protective tape and pad in refrigerators.
Please adjust the clearance between the doors.
3) Set the temperature control to the temperature and
wait for an hour.
The refrigerator should get slightly chilled and the motor
runs smoothly.
4) Once the refrigerator temperature is sufficiently cool
You can store food in the refrigerator. After starting the
refrigerator, it takes a few hours to reach the appropriate
temperature.
Disassemble the refrigerator
1) With the door closed, disassemble screw( ) by
using (+) screw driver and then disassemble the
upper hinge cover( ).
2) Disassemble bolts ( ) and screws ( ) to the
counter-clockwise by using a tool, and take off the
upper hinge ( ) along the arrow ( ). Take care
when you disassemble the door to ensure that it does
not fall on you.
3) Disassemble the door from the lower hinge ( ) by
lifting the door ( ).
4) Disassemble the lower hinge ( ) from the bracket
lower hinge ( ) by lifting the lower hinge ( ) in the
direction of the arrow.
Assemble the refrigerator
1) Insert the lower hinge ( ) in the bracket lower
hinge ( ).
2) Assemble the door ( ) in the lower hinge ( ).
3) Insert the upper hinge shaft ( ) into the hole ( ). After
leveling between the upper hinge hole ( ) and the
hole of the refrigerator ( ), assemble bolts ( )
and screws ( ) to the clockwise by using a tool.
4) Put the front part of the upper hinge cover ( ) on the
front part of the upper hinge ( ) and assemble,
starting with the front part of the upper hinge
cover. Assemble the screw to the clock wise by
using a tool.
1)
3) 4)
3) 4)
2) 1) 2)

8
R S 20 N C SW
Product ; R - Refrigerator
Capacity ; Cu. ft
Door Type
S - Side By Side
Handle Type
C ; Sky Bar Handle
E ; Deluxe Bar Handle
Option
N : Nothing
Color
SW : Snow White
SL : Stainless Looking
4. NOMENCLATURE
Label Location

5-1. Model Specification
9
5. SPECIFICATIONS
RS20N***
496 l(17.5 cu.ft)
188 l(6.6 cu.ft)
308 l(10.9 cu.ft)
850mm×724mm×1722mm
394
Frost free
HFC - 134a
190gr
106kg
Outer dimensions(width x depth x height)
Rated frequency Hz
Rated voltage V
Rated consumption of Comp. W
Rated consumption of Electric heater W
Refrigerator type
Refrigerant
Refrigerant quantity
Freezing Capacity
Products weight
Items Specification
Volume
capacity
Total Volume
Freezer Volume
Refrigerator Volume
Model Name
60
110 115
140
60
127
125
50
220
120
50/60
220
140
50
230
125

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5-2. Electric Parts Specification
Thermistor
(R-sensor)
502AT
Condensing method
Drying agent
Capillary tube
Refrigerant
Model Name
Performance of freezer
RS20N***
R.S.C.R
FREOL α- 15 (ESTER)
SPLIT FIN TYPE
Force and natural convection method
MOLECULAR SIEVE XH-9
0.82×3200, 5.5 kg/cm2
HFC-134a
ON(℃) OFF(℃)
-24.0 -26.0
-19.0 -21.0
-15.0 -17.0
ON(℃) OFF(℃)
2.0 0.0
4.0 2.0
7.0 5.0
4 hours ± 10 mins
6~11 hours(Variable according to the use conditions)defrost
7 ± 2 minutes
THERMISTOR (PX41C)
5.0
㏀ at 25
AC 250V 10A
77
+0
-5
℃
Items Specification
Freezing parts
Inner Temperature detection parts
Freezer
Types Freezer temp.
Colder
Normal
Cold
Thermistor
(F-sensor)
502AT
Types
Refrigerator temp.
Colder
Normal
Cold
Refrigerator
Defrostperiod
Defrost
sensor
F-defrost
sensor
Temperature fuse
Period of initial defrost (F defrost)
Defrost period of freezer
Pause
Types
Spec
Rating
Operation temp.
Parts related defrost
Compressor
Cooler
Type
Operation type
Sealing oils
Freezer
110V/60Hz
MK183CL2U/EH1
127V/60Hz
MK183PL2U/EO1
220V/50Hz
DK190KT2U/EO1
220V/50,60Hz
SK190HL2U/E01
230V/50Hz
MK183QL2U/EO1

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Electricparts
Items
F-room defrost heater
Condenser for
Comp.(monolithic)
Running
Start
Type
Action
Type
ON temperature
OFF temperature
Start relay
Overload relay
L.V.T(LOW VOLTAGE TRANSFORMER)
F room cooling fan motor
Comp. Cooling fan motor
Freezer interior light
Refrigerator interior light
Door switch
Supply cord
Grounding screw
R-room cover damper
R room electrically driven damper
F room heater sub
F room heater glass
Conducting at F defrosting
Conducting at F defrosting
Conducting at F defrosting
200W
60W
130W
3W
1W
Specification
Initial resistance: 68Ω±20% (Ambient temperature : 25℃)
130 ±5℃
69 ±9℃
DC 12V DREP3030LA 0.3A
DC 12V DRCP3030LA 0.24A
AC 250V 0.5A 2EA
TO BE FOLLOWED LOCAL STANDARD
BSBN (Bronze screw)×4EA
250VAC,12㎌
-
J531Q32E4R7M1802
250VAC,12㎌
-
J531Q32E4R7M1802
350VAC,5㎌
-
J531Q34E220M3502
350VAC,5㎌
-
J531Q34E220M3502
350VAC,5㎌
-
J531Q35E330M3852
4TM437RHBYY-53 4TM437RHBYY-53 4TM317SHBYY-53 4TM317SHBYY-53 4TM265RHBYY-53
110 115V/60Hz 127V/60Hz 220V/50Hz 230 240V/50Hz
30W (110 127V)
30W (110 127V)
25W (220 230V)
25W (220 230V)

12
6. INTERIOR VIEWS AND DIMENSIONS
6-1. The Name of Each Part
Freezer
① Interior light
② Ice tray
③ Shelf
④ Food Guard
⑤ Drawer
⑥ Leg cover
Refrigerator
⑦ Dairy compartment
⑧ Interior light
⑨ Shelf
⑩ Egg tray
⑪ Fresh container(option)
⑫ Food Guard
⑬ Vegetable and fruit drawer

13
6-2. Dimensions of Unit

14
77.. FFRREEEEZZIINNGG CCYYCCLLEE AANNDD CCOOOOLL AAIIRR CCIIRRCCUULLAATTIIOONN RROOUUTTEE
7-1. Freezing Cycle
Compressor Condenser Pipe cluster Pipe hot Dryer Capillary tube
Evaporator Accumulator Pipe suction Compressor

15
7-2. Cooling Air Circulation
Freezer Refrigerator

16
88.. MMEECCHHAANNIICCAALL DDIISSAASSSSEEMMBBLLYY
8-1. Accessories for storage and parts for lightening
The door gasket is set into groove on door liner.
1) Open the door.
2) Grasp the gasket and pull it out from
the door liner.
The unit have two light switches on the side wall
of freezer & refrigerator.
1) Use a small flat-blade screw driver to unlock
the hook and pull the switch out until the wire
connector is exposed.
The light of freezer & refrigerator are located at
upper side of each compartment.
1) Remove the screws.
2) Remove the lamp cover by unlocking the
hook.
1) Pull the shelf out as far as it goes.
2) Lift it up and pull it out from the unit.
The ice tray is located at bottom of freezer shelf-
mid.
1) Pull the tray out by sliding.
The drawers are located at bottom side of freezer
and refrigerator.
1) Pull the drawer out as far as it goes.
2) Lift it up slightly and pull it out from the unit.
Door Gasket SHELVES
ICE TRAYS
DRAWERS
LIGHT SWITCHES
LIGHTS

The shelf low ref. in refrigerator can be
removed as following sequence.
1) First, remove the drawer upp..
2) Pull the shelf out as far as it goes.
3) Lift it up and pull it out from the unit.
The tray-ref is located at bottom of shelf-ref
in refrigerator compartment.
1) Pull the tray-ref out as far as it goes.
2) Lift it up slightly and pull it out from the shelf.
1) Lift the guard up and pull it out from door liner.
SHELF LOW REF. IN REFIGERATOR TRAY-REF
FOOD GUARDS
17

18
8-2. Cooling Unit
Before disassemble the cover, Should be
removed all accessories in freezer.
1) Pull the screw cap out (4 EA).
2) Remove the screws (6 EA).
3) Grasp the bottom edge of the cover, and pull it
out from the unit.
Before disassemble the cover, should be cover
evap. front.
1) Pull the screw cap out (1 EA).
2) Remove the screws (1 EA).
3) Grasp the bottom edge of the cover, and pull it
out from the unit.
4) Disconnect the sensor wire connector
and pull the cover out from the unt.
Before disassemble the cover, Should be
removed cover duct. front.
1) Remove the screws (3 EA).
2) Grasp the bottom edge of the cover, and pull it
out from the unit.
3) Disconnect the wire connector and pull the
cover out from the unt.
1) Remove the fan propeller (1 EA).
2) Disconnect the wire connector from body of
the cover.
3) Remove the screws (3 EA) and separate the
fan motor case.
4) Open the case and remove fan motor.
COVER EVAP FRONT IN FREEZER COVER DUCT REAR IN FREEZER
FAN MOTOR
COVER DUCT FRONT IN FREEZER

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1) Take off cover evap front, cover duct front
and cover duct rear in sequence.
2) Disconnect all wire connectors.
3) Desolder the inlet and outlet tube.
4) Remove the evaporator.
Thermal fuse is located at top of the evaporator.
1) Disconnect the wire connector of thermal fuse.
2) Cut the cable tie for securing the fuse.
3) Separate the fuse from the evaporator.
Do not desolder evaporator to replace
the fuse only.
Thermal fuse is located on accumulator of
evaporator.
1) Disconnect the wire connector of thermistor-
defrost.
2) Cut the cable tie for securing the thermistor.
3) Separate the thermistor from the evaporator.
Do not desolder evaporator to replace the
thermistor only.
Before disassemble the thermistor, Should be
removed cover duct. front.
1) Remove the sensor cover.
2) Separate thermistor.
The thermistor is located at inside the upper
hinge cover. It sends temperature signal to the
micro-processor.
EVAPORATOR IN FREEZER
THERMISTOR IN FREEZER
AMBIENT THERMISTOR
THERMAL FUSE
THERMISTOR DEFROST
Thermal
Fuse
Thermistor-defrost
Sensor

20
The Damper is for controlling cold air circulation.
Before disassemble the cover, Should be
removed Ass'y damper.
1) Pull the screw cap out (1 EA).
2) Remove the screws (1 EA).
3) Disconnect the wire connector of thermistor.
4) Grasp the bottom edge of the cover,
pull it down and remove it.
Before disassemble the thermistor, Should be
removed cover multi.
1) Peel off the tape on the back side cover
assembly.
2) Separate insulation of cover multi from the
cover.
3) Remove the sensor.
●After disassemble cap screw(①) disassemble the screw(②).
●Disassemble the connectors then, pull out the damper cover(③) from refrigerator.
●After disassembling the screw(④) from the damper cover(③), disassemble the temperature
control part by pulling forward from the damper cover(③).
●Disassemble the screw(⑤) from the assembly part of temperature control part. And disassemble
the PBA board.
●Assembly is reverse of disassembly.
COVER MULTI IN REFRIGERATOR THERMISTOR IN REFIGERATOR
ASS'Y DAMPER