Samsung RF28R7201 AA Series User manual

REFRIGERATOR
REFRIGERATOR CONTENTS
1. PRECAUTIONS(SAFETY WARNINGS) ············· 5
2. PRODUCT SPECIFICATIONS···························· 9
3. DISASSEMBLY AND REASSEMBLY··············· 18
4. TROUBLESHOOTING ·····································51
5. PCB DIAGRAM ···············································97
6. WIRING DIAGRAM ······································100
7. BLOCK DIAGRAM··········································101
8. MODEL CODE TABLE ·································· 102
FRENCH DOOR REFRIGERATOR
MODEL NAME : RF28R
MODLE CODE : RF28R7201**/AA
RF28R7201**/SA

WARNING
IMPORTANTSAFETY 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 AMERICA, INC.
Technical Service Guide
Copyright ©2010
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.

Contents
1. Precautions(Safety Warnings) .............................................................................................................. 5
2. Product Specications .......................................................................................................................... 9
2-1) Introduction of Main Function ............................................................................................................................................. 9
........................................................................................................................................................................ 11
2-3) InteriorViews........................................................................................................................................................................12
........................................................................................................................13
2-5) Dimensions of Refrigerator (Inches) .................................................................................................................................16
 ......................................................................................................................................... 17
3. Disassembly and Reassembly............................................................................................................ 18
3-1) PRECAUTION........................................................................................................................................................................ 18
3-2) Refrigerator Door .................................................................................................................................................................19
3-3) Door Handle Refrigerator....................................................................................................................................................21
 ...................................................................................................................................... 22
3-5) Lever and Water-Dispenser ............................................................................................................................................... 23
3-6) Glass Shelf ........................................................................................................................................................................... 25
3-7) Foldable Glass Shelf............................................................................................................................................................ 25
 ...................................................................................................................................... 26
3-9) Case Water Filter ..................................................................................................................................................................27
3-10) Motor Damper.................................................................................................................................................................... 29
.......................................................................................................................... 30
3-12) Vertical Hinged Section.....................................................................................................................................................31
3-13) Evaporator Cover In Refrigerator..................................................................................................................................... 33
3-14) EvaporatorIn Refrigerator ............................................................................................................................................... 34
3-15) Freezer Door....................................................................................................................................................................... 35
3-16) Convertible Door................................................................................................................................................................ 36
3-17) Flex Zone Door.................................................................................................................................................................... 37
3-18) Ice-Maker............................................................................................................................................................................ 38
3-19) Flex Zone Light ...................................................................................................................................................................41
3-20) Freezer Light.......................................................................................................................................................................41
3-21) Door Switch In Freezer...................................................................................................................................................... 42
3-22) Evaporator Cover In Freezer............................................................................................................................................. 43
3-23) Evaporator In Freezer........................................................................................................................................................ 44
3-24) Comp tCooling Fan............................................................................................................................................................ 45
3-25) COMPRESSOR.................................................................................................................................................................... 47
3-26) Machine Compartment .................................................................................................................................................... 49
3-27) Electric Box ........................................................................................................................................................................ 50
4. TROUBLESHOOTING.............................................................................................................................51
4-1) Function for failure diagnosis .............................................................................................................................................51
4-1-1. Test mode (manual operation / manual defrost function)..................................................................................51
4-1-2. Self-diagnostic function......................................................................................................................................... 54
4-1-3. Display function of Load condition ....................................................................................................................... 62
4-1-4. DEMO MODE 1 : Cooling OFF Mode setting function (North America model) ............................................... 65
DEMO MODE 2 : Exhibition Mode setting function (All regions except for North America) ....................... 66
4-1-5. Option setting function .......................................................................................................................................... 67
4-1-6. Option TABLE............................................................................................................................................................ 71
4-2) Diagnostic method according to the trouble symptom(Flow Chart) .......................................................................... 75
4-2-1. If the trouble is detected by self-diagnosis ..........................................................................................................77

Contents
4-2-2. If FAN does not operate ......................................................................................................................................... 82
4-2-3. If ICE Room Fan does not operate......................................................................................................................... 83
4-2-4. When ICE MAKER(FF) does not operate .............................................................................................................. 84
4-2-5. If defrost does not operate (F,R DEF Heater)....................................................................................................... 85
4-2-6. When Poweris not applied.................................................................................................................................... 86
4-2-7. When Compressor does not run (Inverter COMP.)............................................................................................... 87
4-2-8. When alarm sounds continuouslywithout stop(related with buzzer sound) ................................................88
4-2-9. When the Panel PBA does not operate normally ...............................................................................................90
4-2-10. When the Dispenser Panel PBA does not operate normally............................................................................91
4-2-11. When refrigeratorROOM Lamp does not light up ............................................................................................ 92
4-2-12. If ICE Water is not supplied .................................................................................................................................. 93
4-2-13. If Cubed or Crushed Ice is not supplied.............................................................................................................. 94
4-2-14. If Cover Ice Route Motor(Geard Motor) is not working normally.................................................................... 95
4-2-15. IR SensorTrouble-Shooting................................................................................................................................. 96
4-2-16. LED blinking frequency depending on protecting functions.......................................................................... 97
5. PCB DIAGRAM...................................................................................................................................... 98
5-1) PBA Layout with part position........................................................................................................................................... 98
5-2) ConnectorLayout with part position (Main Board)...................................................................................................... 100
6. Wiring Diagram.................................................................................................................................. 101
7. Block Diagram .................................................................................................................................... 102
7-1) Whole block diagram......................................................................................................................................................... 102
7-1-1. MAIN BLOCK............................................................................................................................................................ 102
8. Model code table............................................................................................................................... 103

5
1. PRECAUTIONS(SAFETY WARNINGS)
• Unplug the appliance before the changing orrepairing the electric parts.

• When exchanging the parts, use the correct parts.

• When troubleshooting, connect rmly the types of harness.

• Check the traces of water inltration at the electric parts.

• Check the assemble status of parts aftertroubleshooting.

• Check the use circumstance of refrigerator.

or status of installation is unstable, change the installation place.
• Ground the refrigeratorproperly

• Do not use multi plugs in a plug socket at the same time.
Check if the power cord and socket is damaged, pressed, squeezed, or red.

• Do not allow consumers to repairthe appliance by themselves.
• Do not store othermaterials except the foods.



6
PRECAUTIONS(SAFETY WARNINGS)
Read all instructions before repairing the product and follow the instructions in orderto prevent danger or property damage.
Plug out and remove all the items in regrigeratorprior to repair.
CAUTION/WARNING SYMBOLS DISPLAYED
Warning Indicates that a dangerof
death or serious injury
exists.
Caution Indicates that a risk of
personal injury or
material damage exists.
SYMBOLS
means “Prohibited".
means “Do not disassemble".
means “No contact".
means "Warning orCaution".
means “Unplug the unit before preforming service"
means “Earth or Ground".
Warning & Caution
Plug out to exchange the interiorlamp.
• It may cause electric shock.
Unplug
Use the rated components on the
replacement.
• Check the correct model, rated
voltage, rated current, operating
temperature and so on.
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.
On repair, remove completely dust or
otherthings of housing parts, harness
parts, and check parts.
• Cleaning may prevent the possible

Afterrepair, check the assembled state
of components.
• It must be in the same assembled
state when compared with the state
before disassembly.
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.
Rated
components

7
PRECAUTIONS(SAFETY WARNINGS)
Do not allow users to put bottles or
kinds of glass in the freezer.

wound.
Do not allow users to store narrow and
lengthy bottles or foods in a small multi-
purpose room.
• It may hurt you when refrigerator
door is opened and closed resulting in
falling stuff down.
Do not allow users to store
pharmaceutical products, scientic
materials, etc., in the refrigerator.
• The products which need precise
temperature control should not be
stored in the refrigerator.
Do not allow users to plug several
appliances into the same power
receptable.
• May cause abnormal generation of

Do not allow users to disassemble,
repairoralter.

operation which leads to injury.
Do not allow users to bend the power
cord with excessive force ordo not
have the powercord pressed byheavy
article.

Do not allow users to store articles on
the product.
• Opening or closing the door may
cause things to fall down, which may
cause injury.
Do not allow users to install the
refrigeratorin the wet place orthe
place where watersplashes.
• Deterioration of insulation of electric

Make sure of the earth.
• Be sure the product is properly grounded.

Prohibition
Prohibition
Do not
disassemble
Warning & Caution
Earth

8
PRECAUTIONS(SAFETY WARNINGS)
FLOORING
Forproper installation, this refrigerator must be placed
on a level surface of hard material that is the same

strong enough to support a fully loaded refrigerator, or
approximately 660lbs (299kg).
MOVING

the cardboard carton and place under the refrigerator
where you are working. When moving, be sure to pull the
unit straight out and push back in straight.

9
Surround Multi Flow
• Uniform cooling for each shelf and even in corner in fresh food


Twin Cooling System
• The refrigerator and the freezerhave two evaporators. Given this
independent system, the freezer and the refrigerator are cooled

Food odorfrom the refrigerator does not affect food in the freezerdue to

Flex Zone
• The Flex Zone is a full-width independent mid drawerwith adjustable
temperature control.
Counter Height Design

contemporary kitchen.
Secure Auto Close DoorSystem
• Secure Auto Close DoorSystem
• Cool tight doors
• Energy saving
• Preventing sweat on fridge doors
2-1) Introduction of Main Function
2. PRODUCT SPECIFICATIONS

10
PRODUCTSPECIFICATIONS
▶Changing Items
Item Details New Model
Slim Water
Filtration System
Slim water filter is placed between crispers for
changing filter conveniently without removing
items from Refrigerator.
Internal Display The display change more wider and apply Blue LED
lighting.
And Touch Sensor Lighting make the refrigerator
graceful.
Independent One
lever Dispenser
One lever for ice and water.

11
PRODUCTSPECIFICATIONS
2-2) Specications
ELECTRICAL SPECIFICATIONS
Defrost Control From 12 to 22 hrs(comp. run time)
Thermo Bimetal Protector 
Defrost Thermistor
(502AT)


Electrical Rating AC115V60Hz AC115V 60Hz / 230V50Hz
Maximum Current Leakage 0.25 mA
Maximum Ground Path
Resistance 0.1 Ohm
NO LOAD PERFORMANCE
Ambient
Temperature
 
Refrigerator  
Flex Zone  
Freezer
 
Run Time,% < 60 < 80
REFRIGERATION SYSTEM
Refrigerant R600a 2.46oz (70g)
NF54M7151AN/E01
BTU/hr (0.372kw)
1270
Compressor oil (mineral 5 250cc)
<Israel Model (/ML)>
Compressor
C-FanDryer-Single
Condenser
INSTALLATION
Clearance must be provided for air circulation
AT TOP 2" (50mm)
AT SIDES 3¾"(95mm)
AT REAR 2" (50mm)
REFRIGERATOR
FLEX ZONE
FREEZER

12
PRODUCTSPECIFICATIONS
2-3) InteriorViews
* applicable models only

13
PRODUCTSPECIFICATIONS
2-4) Model Specication &Specication Chart
ITEM Model
RF28R*
Ice & WaterDispenser
External size
W35 6/8 Inch (908mm)
D
On Cabinet 29 1/2 Inch (751mm)
W/O Handle 34 Inch (864mm)
With Handle 36 1/2 Inch (926mm)
H
W/O Hinge Cap 68 7/8 Inch (1749mm)
With Hinge Cap 70 Inch (1777mm)
Net
Capacity
Total 
Freezer 
Flex Zone 
Refrigerator 
Efciency of Volume 60%
Weight
Set 328.5 Pounds (149 kg)
Packing 350.5 Pounds (159 kg)
Packing
Width 38 1/4 Inch (972mm)
Depth 36 2/8 Inch (920mm)
Height 75 3/4 Inch (1923mm)
Compressor Reciprocate
Rated Frequency and Frequency AC115 V / 60 Hz (/AA-North America)
AC 230 V / 50 Hz (/ML-Israel)
Refrigerant R600a
Foaming Agent C-Pentane
Refrigerant Input Amount 2.46oz (70g)
Type Refrigerator Indirect Cooling Method Refrigerator
MotorRated Consumption Power 120W
Electric HeaterRated Consumption Power 507.8W

14
PRODUCTSPECIFICATIONS
Items
Specication
RF28R*
Components
forFreezer
Compressor
Model NF54M7151AN/E01
Starting type BLDC
Condenser Forced and Natural Convection Type
Refrigerant R600a
Room Temperature SensorComponents
Freezer
Model Temperature Selection 
THERMISTOR
(F-SENSOR) 502AT
-8℉(-22℃) 
-2℉(-19℃) 
8℉(-14℃) 
Flex
Model Temperature Selection 
THERMISTOR
(F-SENSOR) 502AT
29℉(-1℃) 
42℉(5℃) 
Refrigerator
Model Temperature Selection 
THERMISTOR
(R-SENSOR) 502AT
34℉(1℃) 
38℉(3℃) 
46℉(7℃) 
Defrost Related Components
Defrost Cycle
First Defrost Cycle (Concurrent defrost of F and
R) 6hr ± 10min
Defrost Cycle(FRE) 
(vary according to the conditions used)
Defrost Cycle(REF) 
(vary according to the conditions used)
Pause time 12 ±1min
Defrost Sensor
F/R Defrost-
Sensor
Model THERMISTOR (502AT)
SPEC 
F/R Bimetal-thermo
Protector
Rated AC 250V / 3A
Operating
temperature 
F/R Thermo Fuse- Assy
Protector
Rated AC 250V / 10A
Operating
temperature 

15
PRODUCTSPECIFICATIONS
Items
Specication
RF28R*
Electric Components
Defrost Heater(FRE) Heated at F Defrost AC120V, 230W / AC 230V, 230W
Defrost Heater(REF) Heated at R Defrost AC 120, 120W / AC 230V, 120W
Heater-Ice Maker F/S : AC 120V, 141W / AC 230V, 141W
C/D : AC 120V, 120W / AC 230V, 120W
DISPENSER Heater Interlock with
French Heater AC120, 2.5W / AC 230V, 2.5W
FRENCH Heater - AC120, 2.5W / AC 230V, 2.5W
HeaterWaterPipe -DC12V, 2.3W
HeaterIce room - DC12V, 2W
Bimetal Thermo ForPreventing of Refrigerator Heater AC 250V, 3A

Rated Voltage AC 230V / 50HZ
MotorBLDC (FRE) DC12V, 2.1W / DREP5020LC
MotorBLDC (REF) DC12V, 1.92W / 3612JL-04W-S49-G51
MotorBLDC (CIRCUIT) DC12V, 1.7W / DRCP8020LA
MotorBLDC (ICE ROOM) DC12V, 3.2W / DREP5020LB
AugerMotor AC230V, 102W / ISG-3240SSJ
Geared Motor (ICE MAKER) DC12V / GSP-24RW-001F
Geared Motor (DISPENSER) AC230V, 3.5W / MVCD18AR19
MotorDAMPER DC12V / NSBY001TJ1
Lamp LED(FRE) 
Lamp LED(REF) 
Lamp LED(MID) 
DoorSwitch
FRE DC 200V 0.5A / MDCG-4 (1EA)
REF DC 200V 0.5A / MDCG-4 (2EA)
REF (ICE ROOM) 125VAC 5A, 250VAC 2.5A
MID DC 200V 0.5A / MDCG-4 (1EA)
Power Cord AC 120V, 15A / AC250V, 16A
Earth Screw BSBN (BRASS SCREW)

16
PRODUCTSPECIFICATIONS
4" (102mm)
36 1/2" (926mm)
35 6/8" (908mm)
34" (864mm)
1 1/4" (30.6mm)
70" (1777mm)
8 15/16" (228mm)
22 9/16" (573mm)
20 3/4" (528mm) 29 1/2" (751mm)
49 1/4" (1254mm)
22 9/16" (573mm)
2" (51mm)
1/2" (13mm)
2-5) Dimensions of Refrigerator(Inches)
Model : RF28R*

17
PRODUCTSPECIFICATIONS
2-6) Optional Material Specication
IMAGE Part Name Part Code AMOUNT
ASSY-PACKING SUB DA99-03490L 1
ASSY CASE LAMP-REF DA97-12606C 1
LED LAMP FRE DA41-00676J 1
LED LAMP MID DA41-00676J 1

18
• Unplug the refrigeratorbefore cleaning and making repairs.
• Remove any foreign matteror dust from the powerplug pins.

• Do not use a cord that shows cracks orabrasion damage along its length or at either end.
• Do not plug several appliances into the same multiple powerboard. The refrigeratorshould always be plugged into its own
individual electrical which has a voltage rating that matched the rating plate.

from overheated wires.
• Do not install the refrigerator in a damp place orplace where it may come in contact with water.

• The refrigeratormust be grounded.
- You must ground the refrigerator to prevent any power leakages or electric shocks caused by current leakage from the
refrigerator.
• Do not put bottles orglass containers in the freezer.
- When the contents freeze, the glass may break and cause personal injury.
• Do not store volatile or ammable substances in the refrigerator.
- The storage of benzene, thinner, alcohol, ether, LP gas and other such products may cause explosions.
- Required Tools
IMAGE ITEM USE
Phillips Head Driver Use for assembling and disassembling of
screw
Flat Head Driver
Use for assembling and disassembling of
HomeBar, Dispenser, Delicatessen Box,
Main PBA etc...
Hex Wrench ø 2mm Use for assembling and disassembling of
Handle
Socket Wrench ø 10mm Use for assembling and disassembling of
Door Hinge
- Waterwhitening phenomenon



gas bubbles. The water could look misty due to these oxygen bubbles. It is not because dust or chemicals, just a few seconds
later, it will be clean again.
3-1) PRECAUTION
3. DISASSEMBLY AND REASSEMBLY

19
DISASSEMBLY AND REASSEMBLY
3-2) RefrigeratorDoor
Part Name How To Do Descriptive Picture
Refrigerator Door
1. Remove the 3 screws holding down the Top
Table and remove the Top Table (①)①
2. Disconnect the electrical (②) above the upper
left door hinge To disconnect the connector
(②) more easily, press the end of the hook (③)
and pull connector.
CAUTION
Make sure unit is unplugged.
②
③
3. As shown in the picture, Remove watertube
from hinge (④) by holding at the both sides
of the Tube Fitting and pulling it out. And,
remove the Tube Fitting (⑤) by pulling the
waterhose after pushing in the locking ring
tab at the end of the Tube Fitting.
④
⑤
4. After pulling the Hinge Lever, remove the
Hinge.

20
DISASSEMBLY AND REASSEMBLY
Part Name How To Do Descriptive Picture
Refrigerator Door
5. Lift the door straightly up to remove.
CAUTION
Be careful not to drop the door.
6. Lift the grommet hinge straightly up to
remove.
7. With a Philips head screwdriver, remove the
screw (⑥) attatched to the lowerleft and
right door hinges. With a 0.4in Hex wrench,
⑦) Remove
the lower left and right door hinges (⑧).
⑧
⑥⑦