Samsung RS2544 Service Manual
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Samsung RS2544 Service Manual

Samsung RS2544 Service Manual

Side-by-side refrigerator
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SAMSUNG Home Appliance Service
Model:
SIDE-BY-SIDE REFRIGERATOR
RS2544
RS2622
RS2644
RS2666
RS2777
SAM0060

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Summary of Contents for Samsung RS2544

  • Page 1 SAMSUNG Home Appliance Service Model: SIDE-BY-SIDE REFRIGERATOR RS2544 RS2622 RS2644 RS2666 RS2777 SAM0060...

  • Page 2: Important Safety Notice

    The manufacturer or dealer cannot be responsible for the interpretation of this information. SAMSUNG ELECTRONICS AMERICA, INC. Technical Service Guide All rights reserved. This service guide may not be reproduced in whole or in part in any form without written permission from the SAMSUNG ELECTRONICS Company. WARNING Copyright ⓒ2002...

  • Page 3: Table Of Contents

    Contents 1. Introduction ········································ 2. Installation ········································ 3. Nomenclature ······································· 4. Specifications ······································· 5. Warranty information ··································· 6. Interior Views and Dimensions 7. Refrigeration Cycle and Cool Air Circulation Route 8. Mechanical Disassembly ································ 9. Operation Function ···································· 10. Circuit Descriptions ···································...

  • Page 4: Introduction

    1. INTRODUCTION SAMSUNG side by side refrigerator has the following characteristics. ● ● 1) Twin Cooling System ·The refrigerator and the freezer have two evaporators. Given this independent system, the freezer and the refrigerator are cooled individually as required and are, therefore, more efficient. Food odor from the refrigerator does not affect food in the freezer due to separate air flow circulation.

  • Page 5: Installation

    The refrigerator should get slightly chilled and the motor runs smoothly. 4) Once the refrigerator temperature is sufficiently low You can store food in the refrigerator. After starting the refrigerator, it takes a few hours to reach the appropriate temperature.

  • Page 6: Nomenclature

    3. Nomenclature 2002 Models Product ; R - REFRIGERATOR Label Location 44 SW COLOR ; SBS SW-SNOW WHITE SL-NOBLE STAIN OPTION ; 25 Cu.ft 44-GOOD 26 Cu.ft 22-GOOD 44-BETTER 66-BEST 27 Cu.ft 77-BEST Capacity ; CU. FT Family ; S - SIDE BY SIDE (SBS)

  • Page 7: Specifications

    34∼46 34∼46 -14∼8 -14∼8 7.76 oz 532.3 Btu/hr Freol α-15 0.033＂ ＂ ,130＂ ＂ MODELS Electric box RS2544, RS2622, RS2644, RS2666, RS2777 REPLACEMENT PARTS Main Board(RS2622) Main Board(RS2544/2644/2666) Main Board(RS2777) Thermistor(Freezer) Thermistor(Freezer Evaporator) Thermistor(Refrigerator) Thermistor(Refrigerator Evaporator) DA32-00006B Thermistor(Ambient) Thermistor(CoolSelect Zone...

  • Page 8: Warranty Information

    5. Warranty information...

  • Page 9: Interior Views And Dimensions

    6. Interior Views and Dimensions 6-1) Shelves and Bins Freezer S2544/2622 Model S2777/2666 Model RS2644 Model ith CoolSelectZone with CoolSelectZone Refrigerator RS2666/2777) RS2666/2777) RS2644/2666/2777) Chilled Bin)(RS2777)

  • Page 10: Interior Views And Dimensions

    Interior Views and Dimensions 6-2) Dimensions of Refrigerator (Inches) Dimensions RS2622/2644/2666/2777 RS2622/2644/2666/2777 1.97 RS2622/2644/2666 3.35 RS2544/2777 Model Dimensions RS2544 RS2544 Beverage Station (RS2666/RS2777) Model 47.2 RS2544 49.2 RS2622/2644/2666/2777 54.2 RS2544 56.3 RS2622/2644/2666/2777...

  • Page 11: Refrigeration Cycle And Cool Air Circulation Route

    7. Refrigeration Cycle and Cool Air Circulation Route 7-1) Refrigerant Route in Refrigeration cycle Compressor → Sub-condenser → Side Cluster Pipe(FRE) → Side Cluster Pipe(REF) → Hot Pipe → Dryer → Capillary Tube → Refrigerator Evaporator → Freezer Evaporator→ Suction Pipe → Compressor Refrigerator Evaporator...
  • Page 12 Refrigeration Cycle and Cool Air Circulation Route 7-2) Cool Air Circulation Freezer Refrigerator...

  • Page 13: Mechanical Disassembly

    Refrigerator Door Light Switch Refrigerator Light ······································ Tempered Glass Shelf Plastic Drawers in Refrigerator Gallon Door Bin ······································· Water Filter ········································· Evaporator Cover in the Refrigerator Upper Ductwork ······································ Evaporator Fan Motor Evaporator in Refrigerator Refrigerator Thermistor CoolSelect Zone Thermistor 8-2) Freezer Disassembly Door Bin in Freezer ····································...

  • Page 14: Control Panel

    2. Disconnect the wire connector in the back of control panel. Door Handle The door handles allow access into the refrigerator and freezer. They are front mounted with Phillips head screws. 1. With a small flat-blade screwdriver, press the small button and pull handle cover out.

  • Page 15: Refrigerator Door Light Switch

    M M e e c c h h a a n n i i c c a a l l D D i i s s a a s s s s e e m m b b l l y y Refrigerator Door Light Switch The refrigerator has a door light switch located in the upper right corner for the refrigerator.

  • Page 16: Water Filter

    M M e e c c h h a a n n i i c c a a l l D D i i s s a a s s s s e e m m b b l l y y Water Filter The water filter is located in the upper right-hand corner of the refrigerator. The water filter filters water for the ice maker and the water dispenser. 1. Turn the water filter 1/2 turn counterclockwise and pull it down.

  • Page 17: Evaporator In Refrigerator

    M M e e c c h h a a n n i i c c a a l l D D i i s s a a s s s s e e m m b b l l y y Evaporator in Refrigerator Evaporator is located in the bottom of refrigerator. 1. Take off the ductwork in refrigerator.

  • Page 18: 8-2) Freezer Disassembly

    M M e e c c h h a a n n i i c c a a l l D D i i s s a a s s s s e e m m b b l l y y 8-2) Freezer Disassembly Door Bin in Freezer The door bins allow storage of perishable items.

  • Page 19: Auger Motor Case

    M M e e c c h h a a n n i i c c a a l l D D i i s s a a s s s s e e m m b b l l y y The ice maker is located inside of the ice dispenser assembly.

  • Page 20: Freezer Light

    (Lamp and Thermistor). Evaporator Fan Motor The evaporator fan is located in the lower rear of refrigerator. This fan circulates cold air in the refrigerator. 1. Remove screw(4) located at the four corners of the fan bracket.

  • Page 21: Evaporator In Freezer

    M M e e c c h h a a n n i i c c a a l l D D i i s s a a s s s s e e m m b b l l y y Evaporator in Freezer Evaporator is located in the bottom of freezer to produce cold air driven across the evaporator coils.

  • Page 22: 8-3) Machine Compartment Disassembly

    M M e e c c h h a a n n i i c c a a l l D D i i s s a a s s s s e e m m b b l l y y 8-3) Machine Compartment Disassembly Machine Compartment ＆ ＆ Electric Box 1. Disconnect the power cord of the refrigerator. 2. Remove the fixed screws (6) of compressor cover.

  • Page 23: Operation Function

    9. Operation Function 9-1) Digital Panel ······································ 9-2) Temperature Control Function 9-3) Power Freeze and Power Cool Functions 9-4) Child Lock Function 9-5) Ice ＆ Water Dispenser Function 9-6) C-Fan Motor Delay Function of the Machine Compartment 9-7) CoolSelect Zone 9-8) Water Filter Indicator Function 9-9) Ice-Maker Function 9-10) Defrost Function...

  • Page 24: 9-1) Digital Panel

    To select a set temperature, press the Fridge Temp. button. The display shown the set temperature from 34℉ to 46℉ in sequence. note) Because of the temperature sensor sensivity, the refrigerator can be under and/or over cooled when the air flow is blocked by stored foods. (Temperature range of the sensor : 15℉∼80℉) In the event of a power failure, if the freezer temperature is maintained lower than 41℉, the last...

  • Page 25: 9-3) Power Freeze And Power Cool Functions

    4) Initial Power-On 4-1) In the initial operation under the condition that the freezer and the refrigerator temperature is higher than 14 ℉ and 50 ℉ the Power Freeze is selected, the R-FAN will be turned off. or If Power Cool is selected, the F-FAN will be turned off.

  • Page 26: 9-5) Ice & Water Dispenser Function

    Delay function 9-7) CoolSelect Zone Function (RS2666,RS2777) To select this function, open the refrigerator door and press the button on the control panel of CoolSelect Zone drawer. When the CoolSelect Zone function is selected, the damper inside fan ductwork is open. So the refrigerator cooling is performed first, then the damper is closed to control the CoolSelect Zone C-FAN is ON as soon as the compressor is on.

  • Page 27: 9-8) Water Filter Indicator Function

    1) Select function 1-1) Using Select button, Cool, Chill(30℉), and Soft Freeze(23℉) options can be selected in sequence. Cool option maintains a set temperature of the refrigerator. 2) Quick Cool function 2-1) If the Quick Cool is selected, LEDs will flash 60 and Min. The count will be decreased in every minute.
  • Page 28 Operation Function 2) Preparation of Ice-maker 2-1) Connect the water line to the water supply valve of refrigerator to supply water. (See how to connect a water supply line in the owner’s manual.) 2-2) Push the bucket back fully so that the guide-ice of ice maker should not touch the back of bucket. (If the back of bucket touches the guide-ice of ice maker, the ice maker will not make ice any more because of a ice full signal.)

  • Page 29: 9-10) Defrost Function

    3) A defrost interval depends on the ambient temperature, the number of door openings, and the door open time. 4) A minimum interval is 6 hours and a maximum is 8 hours for the refrigerator, and 12 hours and 16 hours for the freezer, respectively.

  • Page 30: 9-11) Forced Operation Function (Pull-Down/R-Defrost/R,F-Defrost/Cancellation)

    At the ready mode, press any button(except Ice Type and Child Lock) once to start a pull-down operation, twice for a defrost cycle for the refrigerator, three times for a defrost cycle for the freezer and the refrigerator, and finally four times for cancellation of this function.

  • Page 31: 9-12) Sound Function

    Operation Function 9-12) Sound Function 1) Sound function 1-1) To make sure a command input, whenever a button is pressed, a “ding-dong” sounds. 1-2) When two or more buttons are pressed simultaneously or if a wrong button is pressed, there is no sound. 2) Door Open Alarm 2-1) When the doors remain open for 2 minutes, there are 10 times beeps.

  • Page 32: Self-Diagnostics Check List

    CoolSelect Zone sensor itself lower than -58℉. failed; and so on. In the refrigerator room, if frost removal mode is finished due to limited time of 80 minutes. Error is displayed. Indicate Error when the temperature sensed by the Air sensor connector missing;...

  • Page 33: 9-15) Load Operation Check Function

    1) When the freezer temperature is lower than 41℉, all functions on the display panel will be restored. 2) When the freezer temperature is higher than 41℉, all functions will be initialized. (-4℉ for the freezer, 38℉ for the refrigerator, and Cubed for the Ice Type) 9-17) Set Point Shift Function Press Freezer Temp.

  • Page 34: 9-18) Table Of Set Point Shift Function

    2) To increase or decrease #of Code,press the Power Freeze(Quick Ice) or Freezer Temp. so that it can be adjusted such as the temperatures of freezer,refrigerator,Ice maker,and CoolSelect Zone 3) After 20 seconds from adjustment, a new setting will be stored in EEPROM and return to the normal display.
  • Page 35 Example) If you are lowering the current temperature of the freezer by － 6.0 ℉ 2) Shift the refrigerator temperature sensor Reference Value Code Example) If you are raising the current temperature of the refrigerator by + 3.0 ℉ Code Temp. shift － 1.0 ℉...
  • Page 36 Operation Function ■The following options is limited to a model with the Ice Maker. 3) Adjust the time to supply water for the ice maker Reference Value Code Time to supply water 4) Shift the Ice maker temperature sensor Reference Value Code temperature sensor 5) Shift the CoolSelect Zone...

  • Page 37: Circuit Descriptions

    10. Circuit Descriptions 10-1) Source Power Circuit 10-2) Oscillator Circuit 10-3) Reset Circuit ····································· 10-4) Door S/W Sensing Circuit 10-5) Temperature Sensing Circuit 10-6) Key Scan and Display Circuit 10-7) CoolSelect Zone 10-8) Fan Motor(BLDC) Drive Circuit 10-9) EEPROM Circuit 10-10) Option Circuit ····································...

  • Page 38: 10-1) Source Power Circuit

    Circuit Descriptions 10-1) Source Power Circuit This circuit shows SMPS(Switch Mode Power Supply) which converts AC input voltage (115V, 60Hz) to a high DC voltage (170V). The input AC source power is converted to DC through a wave rectifier (BD1) and the converted DC power will generate a constant waveform on the switching transformer using a high speed (100KHz) switching motion of TOP223Y.

  • Page 39: 10-4) Door S/W Sensing Circuit

    1) The terminals, ② and ⑥ of the connector (CN30) are grounded, and DC5V (Vcc) is supplied to the terminals, ⑤ and ⑥ through the resistors, R404 and R403 for the freezer and the refrigerator door, respectively. 2) The micro-processor senses the door’s open and close based on engaged voltages, “Low(0V)” and “High(5V),”...

  • Page 40: 10-6) Key Scan And Display Circuit

    Circuit Descriptions 10-6) Key Scan and Display Circuit 1) Key Scan and display operation. Note) 1) F-DEF-sensor and Bimetal work in parallel. 2) At the first power on, an open error (5V input to MICOM) can be detected by self-diagnostics. A short error will be ignored.
  • Page 41 Circuit Descriptions The step signals of DC 11∼ 12V will be generated periodically. If a sink signal outputs from IC4, DC 11-12V will be applied to the LED input terminal and sink the LED output terminal to 0V. Therefore, LED will be ON for 2 miliseconds. 2) Key Scan The 6 step signals, Q6∼Q4 are applied to scan the 6 keys (buttons).

  • Page 42: 10-7) Coolselect Zone

    Circuit Descriptions 10-7) CoolSelect Zone Panel Circuit 1) CoolSelect Zone display panel and temperature sensor 1-1) CoolSelect Zone is referred to as a storage drawer to implement features of Quick cool, Thaw, and Select (Soft Freeze, Chill, and Cool). 1-2) CoolSelect Zone has an additional display panel.

  • Page 43: 10-8) Fan Motor(Bldc) Drive Circuit

    10-8) Fan Motor (BLDC) Drive Circuit 1) Motor drive circuit 1-1) This refrigerator adopts a BLDC motor froeduce energy consumption, Motors of the freezer, refrigerator and the machine compartment are composed of the BLDC. For RS2533, R-fan is operated by AC 115V Motor.

  • Page 44: 10-9) Eeprom Circuit

    1) The control of load in the system is accomplished by the main PCB. 2) Most of relays or SSRs can control the compressor, refrigerator/freezer defrost heater, and several option functions. 3) For the compressor, #18 pin of micro processor signals High (5V). This signal enters #5 pin of IC3 and #14 of output terminal which have base and collector functions of IC3 turns on and connects the GND.
  • Page 45 Circuit Descriptions 4) The principles of other loads is the same as 3) item described. Note) SSR(Solid State Relay) is a kind of Relay. *COMP. equivalence circuit of drive section (ICE-WATER SOL) ICE-WATER SOLENOID (AUGER MOTOR) AUGER MOTOR...

  • Page 46: Diagnostics

    11. Diagnostics 11-1) If power is not ON Caution! At the power of main PCB, the 115V power and a high-voltage over DC 170V occur. Please take care of yourself on repair and measurement. - Check the connections of main PCB. - Check the connections between upper hinge and CABI-door.
  • Page 47 Diagnostics 11-2) If the compressor and cooling fan motor don’t work normally Did 5 min pass after COMP. OFF? Did buzzer sound on forced operation? (Check certainly after forced start.) Is MICOM No.18 High?(5V) Exchange MICOM and PCB. Is the voltage of IC03 pin No. 14 between 0-1V? Exchange and repair IC03.
  • Page 48 Diagnostics 11-3) If defrost function See Ref. 3: ‘Check load’ in the manual. Make decision on the basis of ref. 4 and 6 in the manual. See test function in the manual. Recheck the corresponding sensor for an error if it fails in return. Reference If temp.
  • Page 49 11-4) If there is a trouble with self-diagnosis - Error of sensor can be seen on the front display of refrigerator. If power is impressed to refrigerator first, an failure of sensor is found. The refrigerator will stop working and display(blink) the region of trouble-occurred sensor repetitively.
  • Page 50 Diagnostics 11-5) If alarm sound 1) If “Ding-Dong” sounds continuously Freezer door MICOM No. 43, Fridge door MICOM No. 44 – Regular voltage are 5V to Open : 0V to Close. Separate the door S/W and check if the measured value of unit is changed from 0 to∞Ω...
  • Page 51 Diagnostics 3) Without sound of buzzer operation Refer the description of Test function in the manual for the Forced operation. Start Does it sound ‘Ding-Dong’if you press a button on front panel? Does i t make a sound of ‘ d oor-open’ al a rm when you are openi n g the door of freezer or fri d ge more than 2 mi n ? Is the bent or go-out of the buzzer...
  • Page 52 Diagnostics 11-6) If the panel PCB is not working normally: 1) Where lighting of the panel PCB is disabled, or only some lamps are disabled. See Ref. 1: ‘View of the connection cabinet-door for the wire assembly’ in the manual. 1.
  • Page 53 11-7) If fan doesn’t work: Reference The refrigerator has been applied with the BLDC fan motor. For RS2533, R room Fan is AC motor used. The BLDC motor is driven by DC 8-12V. Under the normal condition of COMP ON, it is operated together with F-FAN motor. With operation of the CoolSelect Zone function, the F-Fan motor may do not work.
  • Page 54 3. Check the short of main PCB in CoolSelect Zone is not lit. Start Is the connector of CoolSelect Zone inserted correctly in the refrigerator? Is the connector of main PCB (CN51) inserted correctly? Is the connector of CoolSelect Zone panel PCB...
  • Page 55 Door-Open alarm will sound ‘Ding-Dong’ for 10 seconds in a one-minute cycle. For that reason, if the door S/W has failure, the refrigerator can make a “Ding-Dong” sound per a one-minute cycle. Please note step for its service!
  • Page 56 Diagnostics 11-10) If the solenoid in the ice-chute cover doesn’t work : Preliminary check 1) Check if the solenoid is unconditionally operated for 0.3 sec, independent of the Open/Close condition of cover ice-route, after a lapse of about 5 seconds from power ON. (Before installation, the cancellation of cover ice-route open is enabled.) 2) Check if the connector in upper hinge section is hook-up correctly.
  • Page 57 Diagnostics 11-11) If Crushed Ice/Cubed Ice doesn’t work properly: Start Is ice ejected? 1) Check the ice-ejector S/W. 2) Check the door S/W. 3) Check the ice moving motor. 4) Check the cut of wire in the Ice moving Motor section. What’s your selection between crushed and cubed? Cubed ice...

  • Page 58: Safety Instruction On Services

    It must be the same assembled state when compared with the state before disassembly. ●Check the surrounding conditions of the installed refrigerator. When the refrigerator is located at humid or wet place, or the installed state is unstable, change the location. ●If needed, do the ground.

  • Page 59: Appendix Ⅰ Ⅰ (Reference For Circuit Diagnostics)

    Appendix Ⅰ Ⅰ (Reference for circuit diagnostics) Ref.1) Wire connector on the cabinet door. Ref. 2) How to check relay failure Note) NC -> Normally Close (C terminal and ON terminal) NO -> Normally Open (C terminal and Open terminal) C ->...
  • Page 60 2. The diagram of circuit was drawn based on the maximum load. When a repair is needed, see the electric wiring diagram on the back of refrigerator to troubleshoot the corresponding model. 3. For safety, you must turn the power off.
  • Page 61 1. If the Lamp turns on correctly when the door is open, it is normal. Press the door s/w and check it the lamp turns off. If it doesn’t work properly, check the door s/w on the refrigerator. (Door open on the REF and the sensor part of the Main PCB) 1.
  • Page 62 Appendix Ⅰ Ⅰ (Reference for circuit diagnostics) Ref. 6) Table of temperature sensor according to resistance and voltage conversion. The input voltage to the MICOM PORT could be different by a hardware. This is a table based on the voltage using the 10kohm-F. MICOM PORT voltage when the sensor is open: about DC 5V(Vcc LEVEL) MICOM PORT voltage when the sensor is shorted: about DC 0V(Ground LEVEL) Voltage(V)
  • Page 63 Appendix Ⅰ Ⅰ (Reference for circuit diagnostics) Ref. 7) Service part lists of each circuit board. CODE-NO DA41-00104E DA41-00134A DA41-00105C PANEL PCB ASS’ Y DA41-00105D PANEL PCB ASS’ Y DA32-00006B R-DEFROST Sensor DA32-10109V Ambient Temp. Sensor DA32-10109W DA32-00006A F-DEFROST Sensor DA32-10105U DA32-10109X CoolSelect Zone...

  • Page 64: Appendix Ⅱ Ⅱ (Circuit Diagram)

    Appendix Ⅱ Ⅱ ( ( Good Model without CoolSelect Zone and Beverage Station...
  • Page 65 Appendix Ⅱ Ⅱ ( ( Better Model with CoolSelect Zone but Beverage Station , and Best Model with CoolSelect Zone and Beverage Station...
  • Page 66 272, Oseon-Dong, Kwangsan-Gu, Kwangju-City, Korea, 506-723 TEL : 82-62-950-6896,6193 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. - ELECTRONICS ©...

This manual is also suitable for:

Rs2622Rs2666Rs2777Rs2644

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