1. Samsung Home Appliance 2012 Technical Training
- New Model Refrigerator -
This training will focus only on the new features of this refrigerator. Disassembly and troubleshooting of the new components is covered along with the errors that are associated with them.

2. This information is published for informational purposes only and intended for use by personnel qualified for the specific tasks depicted. Qualified personnel are those who, based on their training and experience, are capable of identifying risks and avoiding potential hazards when handling or servicing a product. Only qualified personnel should repair products powered by electricity. Any attempt to handle, service or repair the product or products by anyone other than qualified personnel could result in serious injury or death. You agree that your use of and reliance on this information is at your sole risk. This information is subject to change or update without notice. There are no warranties, either expressed or implied, regarding the accuracy or completeness of this information.
© 2012 Samsung Electronics America, Inc. Samsung is a registered trademark of Samsung Electronics Co. Ltd. All other brand, product, service names and Logos are trademarks and/or registered trademarks of their respective manufacturers and/or owners.

3. New 2012 Models AW-12 Model Name: RF263 AW -4 Model Name: RF323
SAMSUNG French Door Refrigerator
AW-12 Model Name: RF263
SAMSUNG French Door Refrigerator
AW -4 Model Name: RF323
Two new models for 2012 are virtually the same except for the capacity of the compartments.

4. New Features
The Refrigerator, Flex drawer and Freezer drawer handles now have only one set screw to attach them. One side of the handle “hooks” onto the door stud and the other side is secured with the set screw.
Refrigerator doors
New handles make it easier to install them correctly when delivered.
Flex and Freezer Drawer handles

5. New Features RF323 (32=32Cu. Ft.) RF263 (26=26 Cu. Ft.) Net Capacity
Total
31.6 Cu. Ft.
Freezer
10.0 Cu. Ft.
Refrigerator
21.6 Cu. Ft.
Packing
Width
38 ¼ Inches
Depth
Height
76 ⅝ Inches
RF263 (26=26 Cu. Ft.)
Net
Capacity
Total
25.6 Cu. Ft.
Freezer
7.9 Cu. Ft.
Refrigerator
17.8 Cu. Ft.
The major difference between the new models is size. Both compartment and outside dimensions are very different. Other that these new features, these refrigerators are the same as all other twin cooling Samsung refrigerators.
Packing
Width
38 ⅝ Inches
Depth
36 ½ Inches
Height
75 ¾ Inches

6. New Features Dual Ice Makers 10 cube Direct Cool Heated Mold Type
Ice-Maker (Refrigerator)
Dual ice makers with a flex tray type in the freezer and a newly designed direct cooling heated mold ice maker in the ice room compartment of the refrigerator section.
7 cube Flex Tray Type Ice-Maker (Freezer)

7. New Features
Extra refrigerant loop connected to the refrigerator evaporator coil for the direct cooling ice maker in the ice room of the refrigerator
To accommodate the new direct cooling ice maker there is an extension of the refrigerator evaporator designed to loop through the ice room for the ice maker before continuing on to the freezer evaporator.
Compressor
Condenser
Hot Pipe
Back Cluster Pipe
Dryer
Capillary Tube
Refrigerator Evaporator
Direct Cool I/M
Freezer Evaporator
Suction Pipe

8. New Features
Ice room cooling fan is now in the auger motor housing instead of the freezer
The ice room circulation fan is much closer to the ice maker, being in the same compartment as the ice maker, making it much more efficient to promote ice production.

9. New Features
There is no longer an ice full detector arm that comes down from the ice maker. Instead there is an infrared transmitter and receiver system that detects the level of ice in the bucket. The I/R transmitter is in the auger motor housing and the receiver is in the ice maker itself.
I/R Transmitter (auger motor)
There is no longer an ice full detector arm that comes down from the ice maker. Instead there is an infrared transmitter and receiver system that detects the level of ice in the bucket. The I/R transmitter is in the auger motor housing and the receiver is in the ice maker itself.
I/R Receiver (ice maker)

10. New left side refrigerator door vertical hinged section
New Features
New left side refrigerator door vertical hinged section
The vertical hinge attached to the left side door of the refrigerator has a moveable, spring loaded, latch at the top of it that allows the door to be closed even if the hinge is in the wrong position
The vertical hinge attached to the left side door of the refrigerator has a moveable, spring loaded, latch at the top of it that allows the door to be closed even if the hinge is in the wrong position

11. New Features
The ambient and humidity sensors as well as the dispenser lock out switch are now located on top of the left side refrigerator door instead of under the hinge plate. This eliminates the need for extra wiring connectors in the event the door needs to be removed.
Ambient sensor
Dispenser lock out switch
The ambient and humidity sensors as well as the dispenser lock out switch are now located on top of the left side refrigerator door instead of under the hinge plate. This eliminates the need for extra wiring connectors in the event the door needs to be removed.
Humidity sensor

12. Error Codes
LED
Item
Trouble contents
Diagnostic method F R
FZ-Sensor Error
Display error: broken sensor housing, connector error, open or short circuit.
Display error when detecting a temperature of more than 149℉ or less than -58℉
When measuring the voltage between the Main PCB CN30-"4" ↔ CN76-"1” it should read between 4.5VDC~1.0VDC.
FF-Sensor Error
When measuring the voltage between the Main PCB CN30-"5" ↔ CN76-"1” it should read between 4.5VDC~1.0VDC.
FZ-DEF-Sensor Error
The voltage of MAIN PCB CN30- “5” ↔
N76-”1” it should read between 4.5VDC~1.0VDC
FF-DEF-Sensor Error
When measuring the voltage between the Main PCB CN30-"8" ↔ CN76-"1” it should read between 4.5VDC~1.0VDC.
Ambient-Sensor Error
The voltage of MAIN PCB CN78- “8” ↔
CN78-”12” it should read between 4.5VDC ~ 1.0VDC
Flex room-Sensor Error
The voltage of MAIN PCB CN78- “9” ↔
CN76-”1” it should read between 4.5VDC~1.0VDC
Humidity-Sensor Error
When measuring the voltage between the Main PCB CN30-"3" ↔ CN76-"1” it should read between 4.5VDC ~ 1.0VDC.
NOTE: Entering the diagnostic mode on these refrigerators is the same as the other Samsung twin cooling refrigerators.

13. Error Codes LED Item Trouble contents Diagnostic method F R
Ice Maker (FF) Sensor Error
Display error: broken sensor housing, connector error, open or short circuit.
Display error when detecting a temperature of more than 149℉ or less than -58℉
The voltage of MAIN PCB CN90- “1” ↔
CN90-”7”: shall be between 4.5V~1.0V
Ice Room Sensor Error
When measuring the voltage between
the Main PCB CN78-"10" ↔ CN78-"12", it
should read between 4.5V~1.0V.
FZ-FAN Error
Display error during operation of applicable fan motor : Feed back signal line contact error, motor wire separation, motor error
The voltage of MAIN PCB CN76- “3”
(Yellow) ↔ CN76-”1”(Gray): shall be
between 7V~12V
FF-FAN Error
Display error during operation of applicable fan motor: Feed back signal line contact error, motor wire separation, motor error
The voltage of MAIN PCB CN76- “4”
(Orange) ↔ CN76-”1”(Gray): shall be
C-FAN Error
The voltage of MAIN PCB CN76- “5”
(Sky-blue) ↔ CN76-”1”(Gray): shall be

14. Error Codes LED Item Trouble contents Diagnostic method F R
FZ-DEF Error
Separation of freezer compartment defrost heater housing part, contact error, disconnection, short circuit or temperature fuse error. Display error: the defrosting does not finish though freezer compartment defrost is heating continuously for more than 80 minutes.
After separating MAIN PCB CN70 wire
from PCB, resistance value between CN70 Brown ↔ CN70 Gray shall be 63(230) ohm ± 7%. (Resistance value is varied by input power) 0 ohm : heater short, ∞ ohm : wire/bimetal open (Must power off)
FF-DEF Error
Separation of fresh food compartment defrost heater housing part, contact error, disconnection, short circuit or temperature fuse error. Display error: the defrosting does not finish though fresh food compartment defrost is heating continuously for more than 80 minutes.
from PCB, resistance value between CN70 White ↔ CN70 Gray shall be 120(440) ohm±7%. (Resistance value is varied by input power) 0 ohm : heater short, ∞ ohm : wire/bimetal open (Must power off)

15. Error Codes These are new error codes that can be displayed LED Item
Trouble contents
Diagnostic method F R
Ice Maker (FZ)
Function Error (Flex Tray Type)
When the Freezer Ice Maker error occurs more than 3 times, the error will be displayed.
After replacing the Ice Maker, check if it
operates normal.
"Flex Zone-
Damper-Heater
Error"
Display error when open error is detected by damper heater: separation of Damper Heater housing part, contact error, disconnection, short circuit.
After separating MAIN PCB CN77 wire from PCB, resistance value between Black ↔ Brown wire shall be 135 ohm± 7%. 0 ohm : heater short, ∞ Ohm : wire / bimetal Open.
FZ-Ice Pipe Heater Error
The error occurs when there is a wire connector slip-out of the Water Supply Pipe Heater, a contact error or a breakage in the wiring.
When measuring the resistance of the Main PCB CN79 Yellow-Pink wires, it should be within 102Ω ±7%. 0Ω : heater short, ∞Ω : Check for Wire Open or connector Slip-out
These are new error codes that can be displayed

16. Error Codes LED Item Trouble contents Diagnostic method F R
Ice Maker (FF) Function Error
Display error when open error is detected by Heater: separation of Ice Pipe Heater housing part, contact error, disconnection, short circuit.
After changing the Ice Maker (R), restore the refrigerator power and check the operation.
Ice Room FAN Error
Display error during operation of applicable fan motor : Feed back signal line contact error, rnotor wire separation motor error.
When measuring the voltage between the Main PCB CN76-"5" ↔ CN76-"1", it should read between 7.0V~12V.
Panel ↔ Main Communication Error
Display pc - Er in the panel with alarm: MICOM MAIN ↔ PANEL communication error.
Actually, If there is not a problem, it is desirable to replace Main and Panel PCB With the oscilloscope after a cable problem confirming.
Compressor starting Failure
When the Compressor fails starting
Check if there is a short between compressor terminals. Check IPM Voltage [Under 13.5V] Check if there is a short between IPM Pins [#1~33] Check the Compressor and the Cycle
IPM Fault
When there is a IPM Fault error

17. Error Codes LED Item Trouble contents Diagnostic method F R
Compressor abnormal current detection
When there is abnormal current detected at the Compressor
Check the Compressor connections Check the voltage of Resistance of R308 [0.09Ohm] Check the Compressor and the Cycle
Motor Locked Over RPM
When there is a Compressor restriction error
Check the voltage of Resistance of R308 [Short/Open] Check the voltage of both of C103 terminals [Unstable Voltage] Check the Compressor and the Cycle
Compressor under voltage
When there is a lower than normal voltage error
Check the voltage of Resistance of R513 [Short/Open]
Compressor over voltage
When there is a higher than normal voltage error
Check the voltage of Resistance of R501, R505, R509 [Short/Open]

18. Refrigerator Ice Maker Removal
Latch
While pressing the latch on the top right side of the ice bucket, lift up the bucket and pull it out

19. Refrigerator Ice Maker Removal
The refrigerator must be placed into the forced mode and set to “Fd” which turns on the freezer defrost heater. This will also turn on the ice maker mold heater. If there is any ice build up in the area of the cooling tube and the mold, the tube can be damaged trying to pry it loose from the mold unless the ice is melted first.
Once the ice bucket is removed there is a caution that must be observed before attempting to remove the direct cooling ice maker.

20. Refrigerator Ice Maker Removal
The ice maker mold heater will come on in the forced mode only when the freezer compartment defrost is activated. The mold heater will not come on when the freezer is in a normal defrost cycle. Caution must be taken when using the forced defrost in a refrigerator where the compartments are already warm. Additionally the forced mode must be canceled as soon as the ice on the mold is melted enough to separate the ice maker drain from the mold to prevent damage from the heating elements in the refrigerator and freezer sections.
To enter the forced mode, press and hold these 2 buttons on the display panel until the display blanks out. Then press any button until “Fd” appears on the display. This indicates the freezer section as well as the refrigerator section is in the defrost mode.

21. Refrigerator Ice Maker Removal
While in the forced defrost mode for both
refrigerator and freezer compartments, “Fd”, start
disassembling the I/M. Remove the screw from
the wire housing cover and remove the cover.
With the power disconnected, unplug the I/M
connector.
Auger Motor Connector
While in the forced defrost mode start disassembling the I/M. Remove the screw from the wire housing cover and remove the cover. After the forced mode has had time to melt any ice build up on the mold of the ice maker, unplug the main AC power cord and with the power disconnected, unplug the I/M connector in the ice room.
Ice Maker Connector

22. Refrigerator Ice Maker Removal
Remove the silicone cap covering the lower I/M cover and remove the screw
The lower cover of the ice maker, which acts as the defrosted water drain, can be released by pulling out the silicone cap that covers the only screw that holds the front up. The rear of the cover in pined in place and acts like a hinge so the cover cannot be removed completely.

23. Refrigerator Ice Maker Removal
Using a flat blade screw driver, pry the latch on the left side of the lower I/M tray to release the tray. Once released CAREFULLY pull the tray down. It will not come out as the rear of the tray is attached to the I/M.
Using a flat blade screw driver, pry the latch on the left side of the lower I/M tray to release the tray. Once released CAREFULLY pull the tray down. It will not come out as the rear of the tray is attached to the I/M. Remember, the plastic will be cold and can break if forced too far.

24. Refrigerator Ice Maker Removal
Cooling Tube
If the I/M was not allowed enough time to defrost ice build up, the lower tray and/or the cooling tube can be damaged.
If there is still too much ice around the cooling tube and the ice maker mold, the ice must be melted before continuing or damage will occur.

25. Refrigerator Ice Maker Removal
CAREFULLY insert a flat blade screwdriver between the cooling tube and the mold of the I/M and pull the tube down
Care must be taken not to bend or distort in any way the cooling tube or it will not fit properly when reinstalling the ice maker.

26. Refrigerator Ice Maker Removal
While pressing the latch on the
I/M, pull out and down to
remove the Ice Maker.
※ When removing the I/M, be
sure that the cooling tube
grommets (6ea) are not
removed and the tube is not
damaged.
While pressing the latch on the I/M, pull out and down to remove the Ice Maker.
※ When removing the I/M, be sure that the cooling tube grommets (6ea) are not removed and the tube is not damaged.

27. New Refrigerator Ice Maker Design
Function test button
Ice cube sweep arms
Water duct drain
I/R Receiver
FRONT
There are no replaceable components on this ice maker. It should be replaced as an assembly.

28. New Refrigerator Ice Maker Design
I/M mold
Mold heater
Mold cooling tube
Bottom view of the new direct cooling I/M without the water duct drain.
The heater is part of the mold but the cooling tube is moved out of the way to remove the I/M from the ice room. When replacing the ice maker the cooling tube MUST fit into the channel provided in the mold or the bottom cover will not close and the mold will not cool properly affecting ice production.
Bottom view of the new direct cooling I/M without the water duct drain.
The heater is part of the mold but the cooling tube is moved out of the way to remove the I/M from the ice room. When replacing the ice maker the cooling tube MUST fit into the channel provided in the mold or the bottom cover will not close and the mold will not cool properly affecting ice production.

29. New Auger Motor Assembly
Ice room cooling fan duct
I/M defrosted water drain
BLDC Fan
Ice bucket full
I/R transmitter
Ice room temperature sensor
The new auger motor assembly contains the new ice level sensing infrared system, an ice room circulation fan and a drain for the new ice maker The usual components that are common with older assemblies are the auger motor, cubed/crushed ice solenoid and ice room temperature sensor. The extra drain this refrigerator has because of the new ice maker has a heating element wrapped around the drain tube to keep it from freezing.

30. Unplug the auger motor connector.
Auger Motor Removal
Auger Motor Connector
Ice Maker Connector
To remove the auger motor assembly, like previous models, must have the ice maker out of the way to make room. This new ice room is smaller than previous models.
Unplug the auger motor connector.
NOTE: The ice maker must be removed in order to remove the auger motor

31. Auger Motor Removal
With the auger motor assembly unplugged, press on the latch on the bottom of the assembly to unlock it and slide the assembly out
Caution must be taken not to apply too much force if the plastic is cold, the auger motor latch may snap off.

32. Auger Motor Fan Removal
Ice room circulation fan
Ice Room Fan Error
Ice maker drain
If the refrigerator displays a “40E” error this indicated that the ice room fan is either defective, ice build up is stopping the blades which should be unlikely or there is a wiring harness problem.

33. Auger Motor Fan Removal
Only the fan and the drain tube with heater can be easily replaced on the auger motor assembly. All other components will require the assembly to be replaced.
With the auger motor removed, take out the screws that holds the drain in place and move the drain and Styrofoam insulation away.

34. Auger Motor Fan Removal
With the Styrofoam insulation removed both the ice maker drain with heater and the fan can now be removed for replacement. Both components are using connectors that unplug.
With the Styrofoam insulation removed both the ice maker drain with heater and the fan can now be removed for replacement. Both components are using connectors that unplug.

35. Non Replaceable Auger Motor Components
If any of these components in the auger motor assembly fail, the entire assembly should be replaced:
Auger motor
Solenoid
Ice room temperature sensor
I/R transmitter
The fan and drain heater can be replaced with minimal disassembly.
If any of these components in the auger motor assembly fail, the entire assembly should be replaced. The disassembly necessary to remove these components is very time consuming.

36. Detecting the I/R Transmitter
No ice production could be a defective ice bucket level sensor. If either the transmitter or receiver goes bad ice production will stop since the MICOM will think the ice bucket is full. The I/R transmitter is located in the auger motor and receiver in the ice maker. The transmitter can be tested for function by looking at it through a camera. If it does not light, the auger motor assembly must be replaced. If it’s working, then the receiver is defective which requires replacing the ice maker assembly.
The ice bucket level I/R transmitter, located in the auger motor assembly, will not throw an error if it fails. To detect if it is working, view the I/R LED through any camera or most any phone that has a camera and you will see it lit.

37. Ice Room Component Errors
Ice Room Sensor Error
Sensor housing cracked or broken, wiring problem or sensor is
shorted or open.
Refrigerator Ice Maker Function Error
Error is displayed when a Heater opens or the ice maker does not function properly. Separation of Ice Pipe Heater housing,
Connection problem or open heater
Ice Room Fan Error
Error occurs during operation if the feedback signal is not received from the fan motor. Defective fan, connection or main PCB.
Only the fan and drain with heater, located in the auger motor housing, can be easily replaced. All other errors require the assembly be replaced.
Only the fan and drain heater, located in the auger motor housing, can be replaced. All other errors require the assembly be replaced.