SAMSUNG Home Appliance Service SIDE-BY-SIDE REFRIGERATOR MODEL: RS2511 RS2611 RS2630W/XAA RS2531 RS2631 RS2521 RS2621 RS2630SW
WARNING 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 AMERICA, INC. Technical Service Guide Copyright ⓒ2004 All rights reserved.
Contents 1. Safety instruction on services ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 4 2. Warranty information ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙9 3. Mechanical Disassembly ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙14 4. Circuit Diagram ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙15 5. Operation Principles By Parts Of Circuit ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙16 6.Introduction ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙29 7. Installation 30 8. Nomenclature 31 9. Specifications 10. Interior Views and Dimensions 11.
1. Safety Instructions on Service ●Unplug the refrigerator before making any repair or any replacement. � Avoid the electric shock. ●Use the rated components on the replacement. � Check the correct model number, rated voltage, rated current, operating temperature and so on. ●On repair, be sure that the wires such as harness are bundled tightly and are not exposed by water. � Bundle wires tightly in order not to be detached by the external force.
2. Warranty information SAMSUNG REFRIGERATOR LIMITED WARRANTY TO ORIGINAL PURCHASER This SAMSUNG brand product, as supplied and distributed by Samsung Electronics America, Inc.
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3. Mechanical Disassembly 3-1) Refrigerator Disassembly Control Panel Door Gasket 1. Insert a flat-blade screwdriver on the slot as shown, and unlock the tabs. 2. Disconnect the wire connector. The door gasket is a molded gasket set into a channel located in the door liner. 1. Open the door. 2. Grasp the gasket and pull in an outward motion until the molded gasket separates from the door liner. Door Handle The door handles allow access into the refrigerator and freezer.
Mechanical Disassembly Refrigerator Light The refrigerator light is located in the upper portion of refrigerator. 1. Pull the tip on the cover. Gallon Door Bin The door bins allow storage of perishable items. 1. Push the bin up and slide it out. Tempered Glass Shelf These shelves allow the storage of larger items and pull out for easy access. 1. Pull the shelf out as far as it goes. 2. Lift it up and remove it. Water Filter The water filter is located in the bottom left-hand corner of the refrigerator.
Mechanical Disassembly Damper in the Refrigerator 1. Pull out the screw cap and remove the screw. 2. Remove the lamp cover by unlocking the tabs and pulling the cover down. 3. Remove the screw at the cover damper. 4. Take off sensor and lamp wire connector located on the upper liner. 6. Remove the damper from the refrigerator. Refrigerator Thermistor The refrigerator thermistor is located inside of the upper light cover of the refrigerator. THERMISTOR Twin cool in the Refrigerator 1.
Mechanical Disassembly 3-2) Freezer Disassembly Door Bin in Freezer The door bins allow storage of perishable items. 1. Push the bin up and slide it out. Freezer Shelf The shelves slide out for easy access for frozen items. 1. Slide the shelf out until it reaches its stop. 2. Tilt down and slide it out of the compartment. Freezer Door Light Switch This switch is located in the left-hand portion of the freezer and sends a signal to the processor. 1.
Mechanical Disassembly top of the liner, and slide the ice maker in. 5. Tighten the screws (2) of the ice maker support. Ice Dispenser & Ice Maker The ice dispenser is located in the upper portion of the freezer. This assembly stores ice made by the icemaker and dispenses ice. 1. Lift the ice bucket up ① and slide out the ice dispenser assembly ②.
Mechanical Disassembly Freezer Light Evaporator Cover in Freezer The freezer light is located in the bottom of the auger motor case. The light is covered by an opaque cover. 1. Remove the screw and the light cover. 1. Remove screw (6). 2. Remove the assy cover multi fre. 3. Remove the assy cover supt motor fre. 4. Remove screw (2). 5. Remove the cover evap front. 6. Disconnect the sensor wire connector.
Mechanical Disassembly Evaporator in Freezer Evaporator is located in the bottom of freezer to produce cold air driven across the evaporator coils. 1. Take off the ductwork in Freezer. 2. Disconnect the wire connector (Heater, Bimental, and Thermistor). 3. Desolder the inlet and outlet tubes. 4. Remove the evaporator. 5. Take the same steps to seal the system as mentioned earlier. THERMISTOR Ice-MakerThermistor The Ice-Maker thermistor is located in its bottom.
Mechanical Disassembly 3-3) Machine Compartment Disassembly Machine Compartment ＆ Electric Box 1. Disconnect the power cord of the refrigerator. 2. Remove the fixed screws (6) of compressor cover. Condenser Fan The condenser Fan is located in the middle of machine compartment. It cools down the subcondenser and the compressor. 1. Lift up the rib under the support motor. 2. Pull the support motor. 3. Slide up and take off the compressor cover to see the machine compartment. 4.
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5. OPERATION PRINCIPLES BY PARTS OF CIRCUIT 5-1) POWER Terminal Oscillation Frequency ● Vcc(DC 5V) MICOM POWER AND SENSORS << BLDC BLDC MOTOR POWER(NOT USE) +12V(DC 12V) RELAY,PANEL POWER ● When turned on, rectified AC voltage which is stepped down on 2nd transformer flows between ① and ③ at about AC 15V, goes through the diode D101 and D104 is changed to DC, and provide constant 12V. It provides 5V to MICOM and other circuits via regulator REG102 (MC7805ACT), and make entire PCB operate.
OPERATION PRINCIPLES BY PARTS OF CIRCUIT 5-3) RESET CIRCUIT ● RESET Circuit allows the whole program to go back to the initial setting by initializing parts such as the RAM in MICOM with the power supply into MICOM or with an instant power failure. Upon the power supply, the reset terminal voltage becomes "LOW" for several tens of ㎲ compared to Vcc voltage(DC 5V) at MICOM, and it maintains "HIGH"(Vcc Voltage) during normal operation. But, when Vcc drops down to 3.4~3.
OPERATION PRINCIPLES BY PARTS OF CIRCUIT 5-5) DOOR SWITCH DETECTON CIRCUIT 1) If R-Door is opened, the contact point of the door switch (4-3) becomes open, and the current of PCB line comes through R404 and R405 and provides 5 volt which is recognized as door is opened, and turn off the fan at different load. When the door is closed, the voltage goes out from R404 to Switch, the MICOM is applied with OV and the door is recognized as closed.
OPERATION PRINCIPLES BY PARTS OF CIRCUIT 5-6) TEMP SENSING CIRCUIT 1) Sensor uses a thermistor which has a temp coefficient of negative resistance and controls resistance. When the heat goes up, the resistance gets down and vice versa. R302, 4, 6, 9 and C301~C303, C305 are parts for noise prevention but they are not related to temp sensing characteristics. 2) If Vf is the incoming voltage to MICOM in case of F-Sensor, Vf equals (Rth * Vcc)/ ((R301 + Rth).
OPERATION PRINCIPLES BY PARTS OF CIRCUIT � Temp to Resistance of Sensor & MICOM PORT Voltage Sensor CHIP : PX41C Standard Temp. Resistance(㏀) Voltage(V) Temp. Resistance(㏀) Voltage(V) Temp. Resistance(㏀) Voltage(V) Temp. Resistance(㏀) Voltage(V) -50 °F/-45.6 °C 153319 -49 °F/-45.0 °C 144794 4.694 -48 °F/-44.4 °C 136798 -47°F/-43.9 °C 129294 4.659 -46 °F/-43.3 °C 122248 -45 °F/-42.8 °C 115631 4.622 -44 °F/-42.2 °C 109413 -43°F/-41.7 °C 103569 4.581 -42°F/-41.1 °C 98073 -41°F/-40.6 °C 92903 4.
OPERATION PRINCIPLES BY PARTS OF CIRCUIT 5-7) DAMPER CIRCUIT 1) The temperature of R-room is controlled by opening and closing of damper with stepping motor, supplying & blocking cold air. 2) TA7774P (IC07) operates the damper. TA7774P is the driver IC only for step motor. If the regular signal is provided to TA7774P from Micom, send combined signal to Quad-Polar step motor to rotate on certain direction. This makes clockwise or counter clockwise rotation to make the damper open or close.
OPERATION PRINCIPLES BY PARTS OF CIRCUIT 2) DISPLAY OPERATION Like the signal diagram below, Micom sends “ high ” signal through MICOM 6 terminals of NO #1→ 2 → 3 → 4 → 5 → 6 for 2ms every 12ms. This signal goes to output terminal via input terminal of IC5 (KID65783AP or TD62783AP). Output wave always goes through LED input terminal with DC11~12V on every period.
OPERATION PRINCIPLES BY PARTS OF CIRCUIT 5-9) Load Control Circuit 1) Main PCB processes most of the load control for electronic refrigerators. 2) Compressor, F-Room, defrost heater, and other functions are controlled with relay. 3) For example, to operate compressor, MICOM 29 pin outputs high (5V) signal which goes into IC3 Pin #4. The IC3 pin NO 4 plays the same role as the base of NPN TR. The pin #14 works as collector of TR.
OPERATION PRINCIPLES BY PARTS OF CIRCUIT 5-10) ICE MAKER OPERATION CIRCUIT 1) The ice maker circuit above is to control the ice maker kit installed on the F room. 2) This circuit is the hardware to control ejection and horizontal positioning, ice making temperature detection and full icing detection. Temperature detection circuit is the same as temperature detection circuit on 4-6 and the explanation will be skipped and only the ejection circuit will be explained.
OPERATION PRINCIPLES BY PARTS OF CIRCUIT 5-11) OPTION Circuit ● This circuit operates with the initial power on, uses DIODE (1N4148) or JUMPER WIRE. To modify option circuit, Power must be turned off before modification and turned on after the modification. Refer to the table below, the default factory values are highly recommended unless exceptional cases.
Appendix Ⅰ(Reference for circuit diagnostics) Ref.1) Measure Load Terminals � Turn off Power, disassemble Housing connected to MAIN PCB CN70,71,72 and measure followings LOAD TERMINALS PCB CASE VALUE 1) DEFROST HEATER 2) ICE PIPE HEATER CN71 ⑪ & ③ DISPENSER HEATER CN72 ① & ③ WATER VALVE ICE MAKER WATER VALVE DISPENSER AUGER MOTOR CUBE SOLENOID CN70 ⑤ & CN71 ③ CN70 ⑦ & CN71 ③ CN70 ① & CN71 ③ CN70 ③ & CN71 ③ COMP.
Appendix Ⅰ(Reference for circuit diagnostics) � Turn on Power and check status of Relay & Driving Circuit by checking followings according to load operation.
Appendix Ⅰ(Reference for circuit diagnostics) Ref.
1. INTRODUCTION ● A newly developed SAMSUNG side by side refrigerator in 2004 has the following characteristics. 1) Twin X AirFlow ∙Cool air circulates through side vents on every shelf level. This provides even distribution of cooling inside cabinets to keep your food fresh longer. 2) Xtra SpaceTM ∙Vertical room next to the ice maker in the freezer provides space for pizza etc. 3) Door Alarm ∙Beep sound reminds you the door is open.
2. INSTALLATION 1) To protect refrigerator in movement Use padded hand truck as shown. If entrance width is less than 39〃, remove doors prior to installation and reattach doors according to procedure below. 2) Remove all protective tape and pad in refrigerators. Connect water lines and power cord. 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.
3. Nomenclature 2004 Models R S 26 30 SW / XAA Buyer Code: XAA, XAC, CUR COLOR ; WW-WHITE(PCM) SH-STAINLESS PLATINUM SW-SNOW WHITE OPTION ; 30-BEST BUY 11,21,31 ; SAMSUNG Capacity ; 25,26 cu.
4. Specifications ELECTRICAL SPECIFICATIONS Freezer Refrigerator Defrost Control From 6 to 11 hrs Defrost Thermistor(502AT) 59℉(off) Electrical Rating AC115V 60Hz 11.6 Amps Maximum Current Leakage 0.25 mA Maximum Ground Path Resistance 0.1Ohm Energy Consumption kWh/mo. Bimetal 104℉(on)/140℉(off) NO LOAD PERFORMANCE Ambient Temperature Refrigerator,℉ Freezer,℉ Run Time,% 70℉ 34�46 -11�7 �40 90℉ 34�46 -11�7 �60 REFRIGERATION SYSTEM Refrigerant Charge (R134a) 6.
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Interior Views and Dimensions 5-2) Dimensions of Refrigerator(RS26**) (Inches) 3.4 51.2 46.2 35.6 3.4 67.9 64.5 32.2 4.4 32.1 9 21.4 16.4 15.2 35.8 20.1 29.
Interior Views and Dimensions 5-3) Dimensions of Refrigerator(RS25**) (Inches) 29.5 50.9 45.9 34.9 3 69.7 64.5 31.9 4.4 32.1 10 21.4 16.4 15.2 35.8 20.1 2.
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Refrigeration Cycle and Cool Air Circulation Route 6-2) Cool Air Circulation Refrigerator Freezer 12
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7. Function & How- to-use By Products 7-2) TEMP CONTROL 1) Freezer Temp Setting 1-1) With the initial power on, Freezer will be set at MID (-4°F/-20°C) and Refrigerator will be set at MID (37°F/3°C) automatically. At this time, the number of LEDs (1 ~ 5) lighting up on the display panel means intensity (MIN ~ MAX) of room control temperature (6.8 ~ -13°F/-14 ~ -25 °C) and as the intensity gets increased, the number of LEDs increases and the set temperature become lowered.
Function & How- to-use By Products 7-4) CHILD LOCK (on some models) When Child Lock Button on the front panel is pressed for a certain period (3sec.), Child Lock LED gets on and all other buttons on the front panel except for Child Lock Button do not operate. Also, Ice/Water Dispensers do not work. (Display & all Ref functions will maintain the conditions before Child Lock gets on) ● In the above status, when Child Lock Button is pressed for a certain period (3sec.
Function & How- to-use By Products 7-6) FAN MOTOR DELAY (COMPRESSOR ROOM) ● Among the functions depending on Peripheral Temp, Comp Cooling Fan (Comp Room Fan) is controlled according to Peripheral Temp as follows. Therefore, make sure to check the contents to refer to during A/S because Cooling Fan can operate or not according to conditions during Comp operation. Comp Room DELAY Range of Ambient Temp Load operation state Above (64.4°F/18°C) With COMP.
Function & How- to-use By Products 2) Water Supply It is the movement to supply water on the ICE-TRAY by using the SOLENOID VALVE after the completion of the ejection (Ejection after the completion of the normal ice making or that by the test movement) Considering cases with low hydraulic pressure, when it is recognized as No Water Supply, the Water Supply will be attempted for 4 times.
Function & How- to-use By Products Assumption of the ambient temp of higher than 64.4 °F/ 18 °C Low water pressure 5s 5s 1.5s Initial 2hr standby 5s 1.5s 1s 90+(5)min 70+(5)min 70+(5)min No Water Supply No Water Supply No Water Supply Power On High water pressure 5s 5s 5s 55+(5)min 90+(5)min Water Supply 55+(5)min No Water Supply Water Supply when the Ice cube on When the ice cube on the tray cube which the the tray cube which the sensor is attached is sensor is attached is not removed.
Function & How- to-use By Products 4) Ice Ejection It is the movement to separate the ice cubes from the ICE-TRAY after the completion of ice making, which is conducted by the following steps. Check the changes in status and time for the horizontal S/W (if it is used) and the ice level check S/W in parallel and then operate Ejection. At this point, the regular rotational direction of the motors is clockwise (CC) and the reverse rotational direction of that is counter clockwise (CCW).
Function & How- to-use By Products 4-3) Ejection Movement TIMING CHART Max TRAY twist Initial horizontal status Ice Level S/W ON OFF Eject Motor rotates clockwise ON OFF Eject Motor rotates counter clockwise ON OFF Ejecting Standby(2sec) Restorating to Completion horizontal status horizontal status 5) Ice Test It is necessary for the forced operation for the purpose of the operation test, A/S, and cleaning, and when pressing the ICE TEST S/W for a certain time period (more than 1.5 sec.
Function & How- to-use By Products 7-9) ALARM 1) Button TOUCH 1-1) When selecting each button in the CONTROL PANEL, the verification sound (Ding Dong) of input shall be heard. 1-2) In the case of pressing more than two KEYS at the same time or pressing the wrong button, the sound shall not be heard. 2) DOOR-OPEN 2-1) After passing 2 min. consecutively as Freezer/Refrigerator DOOR opened, SOUND alarm (Ding Dong) shall be heard.
Function & How- to-use By Products RS2531**/RS2631** Press for 8 sec RS2521**/RS2621** Press for 8 sec RS2511**/RS2611** Press for 8 sec 1) Forced Operation 1-1) When pressing TEST KEY once in TEST MODE, Forced Operation shall be selected and with BEEP sound, alarm will be operated. 1-2) If Forced Operation is selected, COMP. operates instantly without 5 min. delay in any Operation MODE. At this point, if it is in Defrost, Defrost will be stopped instantly.
Function & How- to-use By Products 2) Forced Defrost 2-1) When pressing TEST KET twice in TEST MODE, Freezer defrost will operate and BEEP sound alarm shall be heard. 2-2) BEEP sound alarm shall operate until the completion of HEATING and pause. 2-3) With the selection of forced Freezer defrost, it will operate regardless of the point of normal Heater On and complete defrost while comparing the temp of the point of HEATER OFF.
Function & How- to-use By Products RS2511**/RS2611** Press for 8 sec If the temp of Freezer/Refrigerator increases more than (149 °F/ 65 °C) in Exhibition Mode, it will restore to normal operation mode. ● Contents of operation in Exhibition Mode DISPLAY, FAN MOTOR, and DISPENSER will operate normally except for Comp. and C-FAN.
Function & How- to-use By Products 1) Self-diagnosis with initial POWER ON 1-1) With POWER ON, it shall diagnose the status of temp SENSOR in a minute in MICOM internally for itself. 1-2) If inferior sensor is found after self-diagnosis, corresponding DISPLAY LED will be all off at the interval of 0.5 sec. and there will be no sound with LED ON.
Function & How- to-use By Products 7-14) LOAD STATUS DISPLAY 1) When pressing “ICE TYPE” and “FILTER RESET(LIGHT)” KEYS simultaneously for 6 sec. in normal operation, the indicators of temp set in Freezer/Refrigerator will all ON/OFF for 2 sec. at the interval of 0.5 sec. At this point, when pressing Temp Set Key in Refrigerator while canceling “ICE TYPE” and “FILTER RESET(LIGHT)” KEYS, it operates load status display. 2) Load status display will show the load in operation REAL TIME.
Function & How- to-use By Products � Details by LED ON locations indicating load status NO ITEMS DISPLAY LED PROBLEM 01 Damper Refrigerator "MIN" (1’st) LED ON whenDamper is open 02 Condition for over load Refrigerator "MID" (3’rd) LED ON when Ambient temp is over (95°F/35 °C) 03 Condition for low temp Refrigerator "MAX" (5’th) LED ON when ambient temp is lower than (62.
Function & How- to-use By Products RS2521**/RS2621** Press for 12 sec RS2511**/RS2611** Press for 12 sec 1) For example,,if you want to shift the Refrigerator STD temp by (34.7°F/1.5 °C), proceed the following. It is to shift the standard temperature.The F-Room standard temp is 3 °C(MID).When it is shifted (34.7°F/1.5 °C) by using the option,the standard temp will be set to (40.1°F/4.5 °C) i.e.when the temp option is changed, it will be controlled to (40.1°F/4.
Function & How- to-use By Products 1-3) If you set "10"as shown in the Freezer option table below after setting "1"to the OPTION CATEGORY,the Refrigerator standard temp will be lowered by -5.4°F(Refer to the Refrigerator Temp Option Table) :In 20 seconds after completion of adjustment,the MICOM will store the set value to the EEPROM and it will revert to the normal display and the option setting mode will be cancelled. 1-4)To increase/decrease the OPTION CATE.
Function & How- to-use By Products APP .EX) TO INCREASE REFRIGERATOR STANDARD TEMP BY (2.7°F/1.5°C) RS2630SW/XAA (for Best Buy) V1 V2 V3 V4 Value- I1 I2 I3 I4 I5 Value+ Item+ Option Setting (10: 2.7°F/1.5°C) Item- Option Cate (1:Refrigerator Standard Temp) RS2531**/RS2631** V1 V2 V3 V4 Value- I1 I2 I3 I4 I5 Value+ Item+ Option Setting (10: 2.7°F/1.5°C) Item- Option Cate (1:Refrigerator Standard Temp) APP .EX)TO LOWER FREEZER STANDARD TEMP BY (-5.4°F/-3°C).
Function & How- to-use By Products APP .EX)TO LOWER FREEZER STANDARD TEMP BY (-5.4°F/-3°C). RS2511**/RS2611** Value- Value+ V1 V2 V3 Item+ V4 I1 I2 Dispenser LED Option Setting (6:(-5.4°F/-3°C)) Item- I3 I4 I5 Option CATE. (0:Freezer Standard Temp) APP .EX) TO INCREASE REFRIGERATOR STANDARD TEMP BY (2.7°F/1.5°C) RS2511**/RS2611** Value- Value+ V1 V2 V3 Item+ V4 I1 I2 Dispenser LED Option Setting (10: 2.7°F/1.
Function & How- to-use By Products 7-16) OPTION TABLE Note) With the Freezer button and the Lighting button, additional options can be set. But, those are relevant not to the A/S but to the ref.control function. So, those options are skipped. (Do not change any other options except the above options.
8. Diagnostics 8-1) When power is not supplied Pre-Check 1. Check if power is supplied at Concent and Power Cord is connected properly before repair 2. Check by referring to the followings. Start NO Is Power of primery DC -TRANS applied? Check assembly of wires and do repairing YES NO Is Power of secondary DC - TRANS applied? Change DC-TRANS YES NO Is 12V terminal normal? PCB. REG101 Change /PCB Change YES NO Is 5V terminal normal? Change PCB.
Diagnostics 8-2) When there is a trouble with Self Diagnosis 1) Ambient Sensor trouble => (applied to Ambient Sensor Temp type) Start NO Is Ambient Sensor normal? (PANEL PCB) YES Change Ambient Sensor NO Is MAIN PCB (CN31) insertion normal? YES Is the connection wire between MAIN PCB connector(CN32) and Temp Sensor normal (PANEL PCB)? NO YES Connector contact trouble /re-insertion Short between connector Sensors Is the voltage of Ambient Sensor of MAIN PCB Connector (CN31) normal? NO (0.
Diagnostics 3) Freezer Temp Sensor trouble Start Is Freezer Temp Sensor normal? NO YES Change Temp Sensor Is the insertion of MAIN PCB connector(CN30) normal? NO YES Is the connection between MAIN PCB connector(CN30) and Temp Sensor(yellow) normal? NO YES Connector contact trouble /re-insertion Short between connector Sensors NO Is MICOM Pin#57 input voltage normal? YES Check soldering fault,short, Lead Touch Change MAIN PCB 4) Defrost Sensor trouble Start NO Is Defrost Sensor normal? YES
Diagnostics 8-3) When COMP does not operat Pre-Check 1. If it doesnotpass5 min after a desired Temp reached, COMP does not operate. 2. During Defrost, COMP does not operate. 3. With the disconnected Freezer Sensor or Refrigerator Sensor, COMP does not operate because MAIN PCB picks up theTemp as a desired level.
Diagnostics 8-4) When FAN & DAMPER does not operate Note "Check out the F-FAN with the Forced Operation selected" 1. Freezer FAN, Refrigerator DAMPER and COMP COOLING FAN remains off while COMP is turned off. 2. When Comp is ON, Damper does not always remain ON (including Forced Operaation) and when Refrigerator temp reaches to set temp, Damper remains OFF. 3. When R-Room & Freezer get closeed after being opened, each Fan & Damper starts up immediately.
Diagnostics 2) When Refrigerator DAMPER does not operate Start Is DAMPER in operating conditions? NO YES Does DAMPER operates with DOOR S/W pressed? YES NO MICOM voltage DOOR OPEN : 5V DOOR CLOSE : 0V Is DOOR S/W normal? DAMPER is normal NO YES Is voltage of MICOM #50 normal? Change DOOR S/W NO YES Is insertion of CN75 of MAIN PCB normal? NO YES MICOM voltage 0 � V alteration Are voltage of MICOM Pin #44,45,46 outputed? NO YES Is DAMPER normal? YES Check wire assembly and connections betw
Diagnostics 3) When Comp Cooling Fan does not operate Start Is COMP operating? NO Operate Forced Operation YES Is it COMP COOLING FAN ON condition? NO Stand by for FAN ON condition Confirm FAN operating condition YES Ambient Temp Comp Fan DELAY Is MICOM Pin #31 "HIGH"(5V)? Higher than (64.4 °F/18 °C) Comp Fan operates immediately upon COMP ON Between (55.4 °F/13 °C) and (62.6 °F/17°C) Comp Fan operates in 5 min after COMP ON Lower than (53.
Diagnostics 8-5) When Defrost does not operate Pre-Check 1. With a shorted-out Defrost Sensor, the fridge operates normally excepting Defrost(The fault can be picked up with self-diagnosis, POWER ON/OFF). 2. There will be Heating trouble with a shorted-out Temp FUSE, which contributes to Defrost by natural Temp increase resulting in a Temp Control problem stemmed from the increased COMP OFF time. 3.
Diagnostics A Does the Function return to the normal after Heating ? YES NO Normal Is each concerned Defrost Sensor Temp higher than the terminated Temp? Concerned Sensor resistance measurement (Appendix TABLE) NO Change concerned Sensor YES Is the input voltage of MICOM #9 higher than the voltage upon the terminated Temp? NO Change Temp pick-up part, Change PCB Concerned Sensor resistance measurement (Appendix TABLE) YES Change PCB 41
Diagnostics 8-6) When Alarm Sound continues without stop Note 1. When Door gets open, Door Open alarm ("Ding Dong") goes off in 2 minutes with Door opened.When Door remains open after this, the alarm goes off every minute. 2. When Door Switch is not pressed well, MICOM considers it as opened and alarming sound goes off. Room Lamp becomes OFF in 10 minutessince it detectsDoor Open (based on R600a).In this case, even though Door gets opened, Room Lamp does not comes ON.
Diagnostics Note 1. "Beep-Beep" sounds do not go off except Forced Operation & Forced Defrost. 2. It is checckableatPanel PCB when Forced Operation or Forced Defrost is selected, so when error occurs, check it andcorrect theerror.
Diagnostics 8-7) When Room Lamp does not light up Note 1. Because Room Lamp is basically controled with Door Switch, PCB does not control it.
Diagnostics 8-8) Dispenser Lamp Malfunction Note 1. Long term LED Short when exchanging may result in the malfunction of PCB since Dispenser Lamp is high brightness LED. 2. When changing the PCB, the power must be turned off. Start ▶ CHECK METHOD Separate the switch and check the resistance with teste.When S/W is selected or stands by, 0 Ω or ∞Ω is pick up.
Diagnostics 8-9) When Water Valve Does Not Operate Pre-Check 1. While disassembling, make sure to cut off water since the water valve is directly connected with water. 2.Makesure toavoidthe electricshock while disassembling because one end of wire is applied with power. 3.
Diagnostics 8-10) When Crush (Crushed Ice ) & Cube (Cubed Ice) does not operate well Start Does Ice come out when extracting Ice? Operating condition is F-Room Door closing condition.
272, Oseon-Dong, Kwangsan-Gu, Kwangju-City, Korea, 506-253 TEL : 82-62-950-6810, 6811 FAX : 82-62-950-6829 - This Service Manual is a property of Samsung Electronics Co., Ltd. Any unauthorized use of Manual can be punished under applicable International and/or domestic law. © Samsung Electronics Co., Ltd. Refrigerator Division 2004.
