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.

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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.

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

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

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)

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

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.

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)

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

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

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.

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

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)

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

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

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]

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

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.

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.

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

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.

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.

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.

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.

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.

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.

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.

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.

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

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.

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.

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.

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.

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.

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.

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.