Samsung RF28HDEDBSR Service Manual

French door refrigerator.
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REFRIGERATOR
REFRIGERATOR
FRENCH DOOR REFRIGERATOR
BASIC : RF28HD*
MODEL NAME : RF28HDEDTSR
RF28HDEDBSR
MODEL CODE : RF28HDEDTSR/AA
RF28HDEDBSR/AA
CONTENTS
2. PRODUCT SPECIFICATIONS ······················9
3. DISASSEMBLY AND REASSEMBLY ·········26
4. TROUBLESHOOTING ································56
5. PCB DIAGRAM ·········································102
6. WIRING DIAGRAM ···································107
7. BLOCK DIAGRAM ····································108
8. MODEL CODE TABLE ······························ 110

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   Summary of Contents for Samsung RF28HDEDBSR

  • Page 1

    REFRIGERATOR FRENCH DOOR REFRIGERATOR BASIC : RF28HD* MODEL NAME : RF28HDEDTSR RF28HDEDBSR MODEL CODE : RF28HDEDTSR/AA RF28HDEDBSR/AA REFRIGERATOR CONTENTS 1. PRECAUTIONS(SAFETY WARNINGS) ·······5 2. PRODUCT SPECIFICATIONS ······················9 3. DISASSEMBLY AND REASSEMBLY ·········26 4. TROUBLESHOOTING ································56 5. PCB DIAGRAM ·········································102 6. WIRING DIAGRAM ···································107 7.

  • Page 2

    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 ©2014 All rights reserved.

  • Page 3: Table Of Contents

    Contents 1. Precautions(Safety Warnings) ..............5 2. Product Specifications ................9 2-1) Introduction of Main Function ..................10 2-2) Specifications ........................12 2-3) Interior Views ........................13 2-4) Model Specification ......................14 2-5) Dimensions of Refrigerator (Inches) ................18 2-6) Optional Material Specification ..................19 2-7) Refrigerant Route in Refrigeration cycle ..............20 2-7-1.

  • Page 4: Table Of Contents

    Contents 5. PCB DIAGRAM ..................102 5-1) PBA Layout with part position ..................103 5-2) PBA Layout with part position (Inverter Board) ............104 5-3) Connector Layout with part position (Main Board) ........... 105 5-4) Connector Layout with part position (Inverter Board) ..........106 6.

  • Page 5: Precautions(safety Warnings)

    1. Precautions(Safety Warnings) ● Unplug the appliance before the changing or repairing the electric parts. ➝ Be careful the electric shock. ● Always use only the correct replacement parts. ➝ Check the model, rated voltage, rated current and running temperature rating.

  • Page 6

    Precautions(Safety Warnings) Read all instructions before repairing the product and follow the instructions in order to prevent danger or property damage. Plug out and remove all the items in refrigerator prior to repair. CAUTION/WARNING SYMBOLS DISPLAYED SYMBOLS means “Prohibited”. Indicates that a Warning danger of death or means “Do not disassemble”.

  • Page 7

    Precautions(Safety Warnings) ❈ Please let users know following warnings & cautions in detail. Warning & Caution Drugs requiring precise Customers should not store narrow Customers should not store glass or long bottles or food in a small temperatures should not be stored bottles of liquid in the freezer door shelf.

  • Page 8

    Precautions(Safety Warnings) FLOORING For proper installation, this refrigerator must be placed on a level surface of hard material that is the same height as the rest of the flooring. This surface should be strong enough to support a fully loaded refrigerator. MOVING Protect the finish of the flooring.

  • Page 9: Product Specifications

    2. Product Specifications 2-1) Introduction of Main Function ..................10 2-2) Specifications ........................12 2-3) Interior Views ........................13 2-4) Model Specification ......................14 2-5) Dimensions of Refrigerator (Inches) ................18 2-6) Optional Material Specification ..................19 2-7) Refrigerant Route in Refrigeration cycle ..............20 2-7-1.

  • Page 10: Introduction Of Main Function

    Product Specifications 2-1) Introduction of Main Function A newly developed SAMSUNG FRENCH DOOR REFRIGERATOR in 2014 has the following characteristics. Surround Multi Flow • Uniform cooling for each shelf and even in corner in fresh food compartment by centerpositioned fan and duct with multiple flow effluences.

  • Page 11

    Product Specifications Secure Auto Close Door System • Secure Auto Close Door System • Cool tight doors • Energy saving • Preventing sweat on fridge doors Easy Handle System • Ez-open Freezer Door • Ergonomic Door Design - The freezer door is more user-friendly. So, it comes as much convenient.

  • Page 12: Specifications

    Product Specifications 2-2) Specifications ELECTRICAL SPECIFICATIONS REFRIGERATOR Defrost Control From 12 to 30hrs(comp. run time) Thermo Bimetal Protector 140°F(60°C)(off) 104°F(40°C)(on) Defrost Thermistor(502AT) 50°F(10℃)(off) Electrical Rating AC110V 60Hz 11.6 Amps (Air inlet) (Air inlet) (Air inlet) (Air inlet) Maximum Current Leakage 0.25 mA Maximum Ground Path 0.1 Ohm...

  • Page 13: Interior Views

    Product Specifications 2-3) Interior Views Light Door Closer FF Ice-Maker Foldable-Shelf Slide Shelf Fixed Shelf Vertical Hinged Quick-Space Section Glass Shelf (on some models) Door Bins Vegetable & Fruit Drawers Cool Select Pantry PLUS Light FZ Ice-Maker Auto Pull Out Drawer Ice Bucket Freezer...

  • Page 14: Model Specification

    Product Specifications 2-4) Model Specification SAMSUNG ITEM SPEC RF28HD** Appearance Cooling Tech Twin Cooling Product Zone Door Shape Contour Special Room Cool Select Pantry F-Room 202↓ Cooling Speed(Min) R-Room 205.0↓ F-Room -31.5↓ -31.9 89.6 (32°C) R-Room 1.7↓ -0.1 F-Room -22.0↓...

  • Page 15

    Product Specifications RF28HD** ITEM Model Ice & Water Dispenser 35 6/8 Inch (908mm) On Cabinet 29 Inch (735mm) W/O Handle 33 1/2 Inch (851mm) External size With Handle 36 Inch (913mm) W/O Hinge Cap 68 7/8 Inch (1749mm) With Hinge Cap 70 Inch (1777mm) Total 27.8 Cu.ft (787.5ℓ)

  • Page 16

    Product Specifications Items Specification Model RF28HD** Model MKV190CL2B Compressor Starting type BLDC Oil Charge FREOL α - 15c Freezer SPLIT FIN TYPE Evaporator Refrigerator SPLIT FIN TYPE Condenser Forced and Natural Convection Type Dryer Molecular shieve XH-9 Capillary tube (Dia x Length) R:0.032"...

  • Page 17

    Product Specifications Items Specification Model RF28HD** Defrost Heater(FRE) Heated at F Defrost AC120V, 230W Defrost Heater(REF) Heated at R Defrost AC120V, 100W Heater-Ice Maker AC120V, 141W Interlock with French AC 120V, 2.5W DISPENSER Heater Heater AC120V, 12W FRENCH Heater DC12V, 2.3W R-ROOM Heater Water Pipe DC12V, 2W...

  • Page 18: Dimensions Of Refrigerator (inches)

    Product Specifications 2-5) Dimensions of Refrigerator (Inches) Model : RF28HD** 35 6/8"(908mm) 60" (1525mm) 36" (913mm) 33 1/2" (851mm) 3/16"(5mm) 1 1/4" (30.6mm)

  • Page 19: Optional Material Specification

    Product Specifications 2-6) Optional Material Specification Part Name Part Code AMOUNT ASSY-PACKING SUB DA99-03490L LED LAMP REF DA97-12606A LED LAMP CASE-VEG R, L DA41-00519S LED LAMP REF(SIDE) DA41-00519Q LED LAMP FRE DA41-00676G LAMP LED Door DA96-01060B ASSY CASE LAMP-REF DA97-14543B LEFT...

  • Page 20: Refrigerant Route In Refrigeration Cycle

    Product Specifications 2-7) Refrigerant Route in Refrigeration cycle Compressor Condenser Hot Pipe Back Cluster Pipe Dryer Capillary Tube Refrigerator Evaporator ICE Pipe Freezer Evaporator Suction Pipe Compressor...

  • Page 21: Principle Of Freezer

    Product Specifications 2-7-1. PRINCIPLE OF FREEZER...

  • Page 22: Operation Theory Of Refrigeration Cycle Components

    Product Specifications 2-7-2. Operation theory of refrigeration cycle components ■Condenser 1) Role: A device which radiates heat to the outside of the refrigerator. As this heat is dispersed, the high temperature/ high pressure vapor refrigerant changes to a liquid state. 2) Types A.

  • Page 23

    Product Specifications ■Evaporator 1. Role: As the low pressure liquid refrigerant flowed from capillary absorbs heat inside of the refrigerator, it becomes low pressure gas and refrigerate the foods. 2. Theory: The low pressure refrigerant flowed to evaporator operates cooling which takes ambient evaporated potential heat with maintaining the evaporation up to evaporate completely.

  • Page 24: Refrigeration Cycle Type

    Product Specifications 2-7-3. Refrigeration Cycle Type TDM Cycle Compressor Condenser Hot-Pipe Back Cluster Pipe Capillary Tube Refrigerator Evaporator Dryer ICE Pipe Freezer Evaporator Suction Pipe Compressor...

  • Page 25: Cooling Air Circulation

    Product Specifications 2-8) Cooling Air Circulation...

  • Page 26: Disassembly And Reassembly

    3. Disassembly and Reassembly 3-1) PRECAUTION ........................27 3-2) Refrigerator Door ......................28 3-3) Door Handle Refrigerator ....................30 3-4) Door Handle Freezer & Flex zone ................31 3-6) Cover-Display & Water-Dispenser ................33 3-7) Water-Dispenser ......................34 3-8) Glass Shelf ........................35 3-9) Foldable Glass Shelf ......................35 3-11) Cool Select Pantry......................

  • Page 27: Precaution

    Disassembly and Reassembly 3-1) PRECAUTION • Unplug the refrigerator before cleaning and making repairs. • Do not dissemble or repair the refrigerator by yourself. - It may cause risk of causing a fire, malfunction and/or personal injury. • Remove any foreign matter or dust from the power plug pins. - Otherwise there is a risk of fire.

  • Page 28: Refrigerator Door

    Disassembly and Reassembly 3-2) Refrigerator Door Part Name How To Do Descriptive Picture 1. Remove the 3 screws holding down the Top Table and remove the Top  Table ()  2. Disconnect the electrical () above the upper left door hinge To disconnect the connector () more easily, press the end of the hook () and pull connector.

  • Page 29

    Disassembly and Reassembly Part Name How To Do Descriptive Picture 5. Lift the door straightly up to remove. Refrigerator Door 6. With a Philips head screwdriver, remove the screw () attatched to  the lower left and right door hinges. With a wrench(0.4"), remove the 2 flat head screws () attatched to the lower left and right door hinges.

  • Page 30: Door Handle Refrigerator

    Disassembly and Reassembly 3-3) Door Handle Refrigerator Part Name How To Do Descriptive Picture 1. Loose Set Screw with 0.1in Hex wrench and pull front the handle. Door Handle Fridge 2. Remove the cover vinyl of door.

  • Page 31: Door Handle Freezer & Flex Zone

    Disassembly and Reassembly 3-4) Door Handle Freezer & Flex zone Part Name How To Do Descriptive Picture 1. Loosen the Set Screw situated at the bottom right of the appliance about 0.1in by using Hex wrench. Door Handle Freezer 2. Pull the Set handle out by moving it to the right side.

  • Page 32

    Disassembly and Reassembly 3-5) Water-Dispenser Part Name How To Do Descriptive Picture 1. Disengage the Housing Connector by pushing a flat-blade screwdriver. 2. Remove 2 screws of the Case Ice Route Assy. Water-Dispenser 3. Pull the Case Ice Route Assy. 4.

  • Page 33: Cover-display & Water-dispenser

    Disassembly and Reassembly 3-6) Cover-Display & Water-Dispenser Part Name How To Do Descriptive Picture 1. Remove a screw under the display cover. 2. Remove the display cover by pulling it up. Put the thumbs on the surface door and hold the bottom of the Display Panel with four fingers.

  • Page 34: Water-dispenser

    Disassembly and Reassembly 3-7) Water-Dispenser Part Name How To Do Descriptive Picture 1. Disengage the Housing Connector by pushing a flat-blade screwdriver. 2. Remove 2 screws of the Case Ice Route Assy. Water-Dispenser 3. Pull the Case Ice Route Assy. 4.

  • Page 35: Glass Shelf

    Disassembly and Reassembly 3-8) Glass Shelf Part Name How To Do Descriptive Picture 1. Remove the shelf by lifting the front Glass Shelf part of the shelf up and pulling it out. 3-9) Foldable Glass Shelf Part Name How To Do Descriptive Picture Foldable Glass 1.

  • Page 36

    Disassembly and Reassembly 3-10) Vegetable & Fruit Drawers Shelf Part Name How To Do Descriptive Picture 1. Remove the vegetable & fruit drawer. 2. P u s h t h e b u t t o n o n t h e l e f t Vegetable &...

  • Page 37: Cool Select Pantry

    Disassembly and Reassembly 3-11) Cool Select Pantry Part Name How To Do Descriptive Picture 1. Remove the cool select pantry by Cool Select Pantry pulling the roller part and lifting it 1. Remove the cool select pantry Cool Select Pantry cover by lifting up the left part of Cover the cover and pulling it.

  • Page 38: Case Water Filter

    Disassembly and Reassembly 3-12) Case Water Filter Part Name How To Do Descriptive Picture To disassemble the Case Water Filter, remove the water filter and all drawers and shelves. 1. Remove the 3 screws holding down the Top Table and remove the Top Table ().

  • Page 39: Motor Damper

    Disassembly and Reassembly Part Name How To Do Descriptive Picture 5. Disconnect the 2 Housing connectors  (). Case Water Filter 6. Lift and pull the Case Water Filter out. 3-13) Motor Damper Part Name How To Do Descriptive Picture 1.

  • Page 40: Water Filter (assembly & Disassembly)

    Disassembly and Reassembly 3-14) Water Filter (Assembly & Disassembly) Part Name How To Do Descriptive Picture 1. Turn the water filter count-clockwise. (Refer to the picture) 2. Remove the water filter by pulling it. (Refer to the picture) Water Filter 3.

  • Page 41: Vertical Hinged Section

    Disassembly and Reassembly 3-16) Vertical Hinged Section Part Name How To Do Descriptive Picture 1. Remove 2 screw caps with a flat- blade(-) screwdriver. (Refer to the picture) 2. Unscrew 2 screws. Vertical Hinged Section 3. Disengage the internal housing connector of the vertical hinge.

  • Page 42: Evaporator Cover In Refrigerator

    Disassembly and Reassembly 3-17) Evaporator Cover In Refrigerator Part Name How To Do Descriptive Picture 1. Remove the angle cap with a flat- blade screwdriver. (Refer to the picture) Be careful not to scratch or break the parts. CAUTION 2. Unscrew 4 screws. 3.

  • Page 43: Evaporator In Refrigerator

    Disassembly and Reassembly 3-18) Evaporator In Refrigerator Part Name How To Do Descriptive Picture <Left> 1. Disconnect the housing connector part on left side. Before doing the above, make sure that the unit is CAUTION unplugged. <Right> 2. Disconnect the housing connector Evaporator In on right side.

  • Page 44: Super Extended Drawer

    Disassembly and Reassembly 3-19) Super Extended Drawer Part Name How To Do Descriptive Picture 1. Slide the drawer in as much as possible. Super Extended 2. Lift the drawer up. Drawer 3. Remove the drawer by lifting the bottom part of drawer bin and pulling it out.

  • Page 45: Freezer Door

    Disassembly and Reassembly 3-20) Freezer Door Part Name How To Do Descriptive Picture 1. Take out the upper drawer by lifting it up. ② 2. Remove the tilting Pocket (①) by pulling the both brackets (②) ① upward at the same time. 3.

  • Page 46: Ice-maker

    Disassembly and Reassembly 3-21) Ice-Maker Descriptive Picture Part Name How To Do 1. Remove the screw from the Duct Tray-ice. 2. With a flat blade screwdriver, push the duct to the right and remove it from the locking tab. (Refer to the image.) 3.

  • Page 47

    Disassembly and Reassembly Part Name How To Do Descriptive Picture If the ice maker is frozen, it can be Ice Maker melt by using the steam heater. 1. Remove the Drawer, Drawer Bin, Guard from the Freezer. 2. Remove the two screw of FZ ICE FZ ICE MAKER MAKER and pull it to remove.

  • Page 48

    Disassembly and Reassembly Part Name How To Do Descriptive Picture 4. Disconnect the FAN-AUGER-ASSY Connector. 5. Hold the Hook on the bottom of the Auger Motor Fan FAN-AUGER-ASSY and lift it up to make it free from the Locking Tab. 6.

  • Page 49

    Disassembly and Reassembly 3-22) Freezer lamp Part Name How To Do Descriptive Picture 1. Remove the cover Freezer lamp () using a flat-blade screwdriver.  Freezer lamp 2. Disengage the housing. Before doing the above, make sure that the unit is CAUTION unplugged.

  • Page 50: Evaporator Cover In Freezer

    Disassembly and Reassembly 3-24) Evaporator Cover In Freezer Part Name How To Do Descriptive Picture 1. Loosen the 2 screws, which fix the Evaporator cover. Evaporator Cover In 2. Lift up the evaporator cover. Freezer 3. Disconnect the housing connector on right and remove the evaporator cover.

  • Page 51: Comp Cooling Fan

    Disassembly and Reassembly 3-26) Comp Cooling Fan Part Name How To Do Descriptive Picture 1. Unscrew 5 screws of COVER COMP. Be careful not to damage from the inner hole of cover comp. CAUTION 2. Remove the DRAIN HOSE. 3. Remove 1 screw. 4.

  • Page 52: Comp Cooling Fan Motor

    Disassembly and Reassembly 3-27) Comp Cooling Fan Motor Part Name How To Do Descriptive Picture 1. Remove the screw with a flat blade screwdriver. 2. Remove the motor fan by pulling the fan out while graping the motor part. Comp Cooling Fan 3.

  • Page 53: Electric Box

    Disassembly and Reassembly Part Name How To Do Descriptive Picture 1. Disengage the housing connector. 2. Remove Cover Relay. Relay O/L 3. Remove the relay O/L with a flat- blade screwdriver. (Refer to the picture) 3-28) Electric Box Part Name How To Do Descriptive Picture 1.

  • Page 54: Cover-unit

    Disassembly and Reassembly 3-29) Cover-Unit Part Name How To Do Descriptive Picture Supplies : A general hexagonal wrench ( Thickness is under 6mm ) 1. Check the hook on the mark of Cover-Unit “△”. 2. Inset the wrench to the side of hook on the mark of “△”...

  • Page 55: Assy Top Table

    Disassembly and Reassembly 3-30) ASSY TOP TABLE Part Name How To Do Descriptive Picture 1. Remove the 3 screw holding down the Top Table and remove the Top  Table (). 2. Remove the ground screw () attached to the top of the cabinet ...

  • Page 56: Troubleshooting

    4. TROUBLESHOOTING 4-1) Function for failure diagnosis ..................57 4-2) Diagnostic method according to the trouble symptom(Flow Chart) ......71...

  • Page 57: Function For Failure Diagnosis

    TROUBLESHOOTING 4-1) Function for failure diagnosis 4-1-1. Test mode (manual operation / manual defrost function) • If Freezer Key + Lighting Key on the front of panel are pressed simultaneously for 8 seconds , it will be changed to the test mode and all displays on the front of panel will be off. •...

  • Page 58: Display Function Of Communication Error

    TROUBLESHOOTING 2) Forced Defrost 2-1) When you press any key one more time at Fridge off Forced Operation [OF r], rd lights up on the Display Panel. At this time, the Forcd Operation stops immediately and R-Defrost will be performed at the same time.

  • Page 59

    TROUBLESHOOTING 4-1-3. Self-diagnostic function 1) Self-diagnostic function in the Initial power ON 1-1) Micom operates self-diagnostic function to check the temperature sensor condition within 1 second when the refrigerator turned On initially. 1-2) If bad sensor is detected by the self-diagnostic function, the applicable display LED will blink for 0.5 sec. At this moment, there is no beep sound.(Refer to self-diagnostic CHECK LIST) 1-3) Self-diagnostic button is recognized only when the error is displayed by the bad sensor.

  • Page 60

    TROUBLESHOOTING ※ R Self-diagnostics check list Item Trouble contents Diagnostic method When measuring the voltage between the Main FZ-Sensor Error PCB CN30-"4" ↔ CN76-"1", it should read between 4.5V~1.0V. When measuring the voltage between the Main FF-Sensor Error PCB CN30-"6" ↔ CN76-"1", it should read between 4.6V~1.0V.

  • Page 61

    TROUBLESHOOTING ※ R Self-diagnostics check list Item Trouble contents Diagnostic method After separating MAIN PCB CN77 wire from Display error when open error is detected PCB, resistance value between Black ↔ Brown Pantry-Damper- by damper heater : separation of Damper wire shall be 135 ohm±...

  • Page 62: Display Function Of Load Condition

    TROUBLESHOOTING 4-1-4. Display function of Load condition RF28HDEDB* RF28HDEDT* ① ① ① ① ② ② ① If Freezer Key + Fridge Key are pressed simultaneously for 6 seconds, ALL ON/OFF will blink with 0.5interval for 2 seconds. ② If take the finger off from above keys and press Lighting, load condition mode will be started. 1) If Freezer Key + Fridge Key are pressed simultaneously for 6 seconds during normal operation, the temperature setting display of fresh food and freezer compartments will blink ALL ON/OFF with 0.5 for 2 seconds.

  • Page 63

    TROUBLESHOOTING ※ Load mode Check list Display LED Display contents Operation contents When FF compartment FAN operates with high speed, applicable R-1-ⓐ R-FAN High LED ON When FF compartment FAN operates with low speed, applicable R-1-ⓑ R-FAN Low LED ON R-1-ⓒ...

  • Page 64

    TROUBLESHOOTING 4-1-5. Cooling OFF mode setting function RF28HDEDB* RF28HDEDT* ① ① ① ① ① ① ① If Freezer Key + Fridge Key + Alarm Key are pressed for 5 seconds, Cooling Off mode will be started. 1) If Freezer Key + Fridge Key + Alarm Key are pressed simultaneously for 5 seconds during normal operation, Cooling Off mode will be started with buzzer sound(ding-dong).

  • Page 65: Option Setting Function

    TROUBLESHOOTING 4-1-6. Option setting function • If Alarm Key + Fridge Key are pressed simultaneously for 12 seconds during normal operation, fresh food and freezer compartments temperature display will be changed to option setting mode. KEY operation method for changing to option mode RF28HDEDB* RF28HDEDT* ①...

  • Page 66

    TROUBLESHOOTING Code Reference Value 1) For example, if you want to change freezer compartment standard temperature to -4℉(-2°C) by operating option, do as below. This function is for changing the standard temperature. In -2℉(-19°C) of current temperature of freezer compartment, if you make the temperature lower to -4℉ (-2°C) by the option, the standard temperature would be controlled -6℉(-21°C) Therefore, if you change the setting of temperature option to -2℉(-19°C) on the panel, the appliance will be operated with -6℉(-21°C).

  • Page 67: Option Table

    TROUBLESHOOTING 4-1-7. Option TABLE 1) Temperature changing table of freezer compartment Set item Freezer Temp Shift MODEL RF28HD* Reference Fridge Room 7-SEG Value Code Reference Value Setting value FZ compartment Temp. Code compensation 0℉(0.0℃) -1℉(-0.5℃) -2℉(-1.0℃) -3℉(-1.5℃) -4℉(-2.0℃) -5℉(-2.5℃) -6℉(-3.0℃) -7℉(-3.5℃) +1℉(+0.5℃) Code...

  • Page 68

    TROUBLESHOOTING 3) Operation rate changing table of dispenser heater Dispenser Heater Rate Set item Reference Fridge Room 7-SEG Value Setting value Rate change compartment Code +0.0% + 20% operation ( up to 100% ) Code Reference Value ex) If you want to change the dispenser heater operation rate to +20% 4) Temperature changing table of Pantry/Room Code...

  • Page 69

    TROUBLESHOOTING Code Reference Value 5) Amount of water supply to ice tray Freezer Temp Shift Set item Reference Fridge Room 7-SEG Value Code Reference Value Setting value FZ compartment Code Setting value Setting value + 10cc Code Reference Value ex) If you want to change the amount of water supply to ice Code Reference Value tray to Setting value + 10cc...

  • Page 70

    Code Reference Value TROUBLESHOOTING Code Reference Value 7) Temperature changing table of ICE ROOM compartment Code Reference Value Set item Freezer Temp Shift Reference Fridge Room 7-SEG Value Code Reference Value Setting value FZ compartment Code 0℉(0.0℃) -1℉(-0.5℃) ex) If you want to change the -2℉(-1.0℃) ice room compartment Code...

  • Page 71: Diagnostic Method According To The Trouble Symptom(flow Chart)

    TROUBLESHOOTING 4-2) Diagnostic method according to the trouble symptom(Flow Chart) DATA1.Temperature table Resistance value and MICOM port voltage of sensor according to the temperature SENSOR CHIP : based on PX41C, PX41C, 502AT/ 103**(ICE MAKER SENSOR(MOLD)/FULL UP, 20Kohm ( Actual measurement = value of the table below X 2 ) Voltage Resi s tance Voltage Resi s tance Voltage Resi s tance...

  • Page 72

    TROUBLESHOOTING DATA2. Humidity Sensor table - Voltage output table @23°…, 5Vdc --- HTG3515CH/HTG3535CH RH(Temperature compensate ) = RH (Relative Humidity ) + ( Temp(°C) °© 23°C) x 0.05 Voltage Resi s tance Voltage Resi s tance Voltage Resi s tance ℃...

  • Page 73

    TROUBLESHOOTING 4-2-1. If the trouble is detected by self-diagnosis - The error of sensor will be displayed on the front of display. when the error of sensor is detected at initial power ON, the appliance will not operated and display of abnormal sensor part will blink.

  • Page 74

    TROUBLESHOOTING 2) ICE Maker(FZ) Sensor has troubled ERROR Code - This refrigerator has Dual Ice Maker, so controlled two Ice Makers. Start Is MAIN PCB DATA1. Connector CN90 inserted Temperature table correctly? Bad contact of connector/ insert correctly ** Measuring point of resistance value according to Sensor ** ICE MAKER(FZ) : CN90 9 ↔...

  • Page 75

    TROUBLESHOOTING 3) If R DEF Sensor has trouble ERROR Code Start Is MAIN PCB DATA1. Connector CN30 and CN76 inserted Temperature table correctly? Bad contact of connector/ insert correctly ** Measuring point of resistance value according to Sensor ** Is R Sensor R : CN30 - “6”...

  • Page 76

    TROUBLESHOOTING 4) If R DEF Sensor has trouble ERROR Code Start Start Is MAIN PCB DATA1. Connector CN30 and CN76 inserted Temperature table correctly? Bad contact of connector/ insert correctly ** Measuring point of resistance value according to Sensor ** R-DEF : CN30-"8"...

  • Page 77

    TROUBLESHOOTING 5) If Ambient Sensor has trouble ERROR Code Start Start DATA1. MAIN PCB Connector CN78 inserted Temperature table correctly? Bad contact of connector/ insert correctly ** Measuring point of resistance value according to Sensor ** Ambient : CN78-”8”↔ “12” measuring resistance value ** Placed in the right top table of upper hinge.

  • Page 78

    TROUBLESHOOTING 6) If F Sensor has trouble ERROR Code Start Start Are MAIN PCB DATA1. Connector CN30 and CN76 Temperature table inserted correctly? Bad contact of connector/ insert correctly ** Measuring point of resistance value according to Sensor ** F : CN30-”4” ↔ CN76-”1” measuring resistance value F Sensor unit normal? ** 0Ω: Short trouble / Ω∞: Open trouble Refer to circuit diagram in the manual...

  • Page 79

    TROUBLESHOOTING 7) If F DEF Sensor has trouble ERROR Code Start Start DATA1. MAIN PCB Connector CN30 and CN76 Temperature table insert correctly? Bad contact of connector/ insert correctly ** Measuring point of resistance value according to Sensor ** F-DEF : CCN30-”5” ↔ CN76-”1” measuring resistance FZ DEF Sensor unit value normal?

  • Page 80

    TROUBLESHOOTING 8) If Ice Room Sensor has trouble ERROR Code Start Start Is MAIN PCB DATA1. Connector CN78 and CN76 inserted Temperature table correctly? Bad contact of connector/ insert correctly ** Measuring point of resistance value according to Sensor ** Ambient : CN78 ”10”↔...

  • Page 81

    TROUBLESHOOTING 9) If PANTRY Sensor has trouble ERROR Code Start Start Is MAIN PCB DATA1. Connector CN30 and CN76 insert Temperature table correctly? Bad contact of connector/ insert correctly ** Measuring point of resistance value according to Sensor Is Pantry Sensor Flex : CN30 ”9”...

  • Page 82

    TROUBLESHOOTING 10) If Humidity Sensor has trouble ERROR Code Start Start Is MAIN PCB Connector CN30 inserted correctly? ** Measuring point of resistance value according to Bad contact of connector /insert correctly Sensor" Humidity : CN30 ”1” ↔ ”3” Is Humidity Sensor Resistance value with opened : about 50Ω...

  • Page 83

    TROUBLESHOOTING 11) PANTRY Room Damper Heater has trouble(OPTION) ERROR Code Start Start Is Damper Heater normal?(about135ohm) Bad contact of connector/ insert correctly Measure the voltage of Resistance Is MAIN PCB connector between ① - ② after (CN77) inserted correctly? CN77 connector open / 1350 ohm ± 7% 1) Wire connector Initial Working...

  • Page 84: If Fan Does Not Operate

    TROUBLESHOOTING 4-2-2. If FAN does not operate - The refrigerator of this model has BLDC FAN motor. BLDC motor is driven by DC 7~12V. - On the normal condition of COMP ON, it operates together with F-FAN motor. If door is opened and closed once at a high ambient temperature, it will be operated after 1 minute delay. Therefore, you are advised not to taken it for an error.

  • Page 85: If Ice Room Fan Does Not Operate

    TROUBLESHOOTING 4-2-3. If ICE Room Fan does not operate - This refrigerator has BLDC FAN motor. BLDC motor is driven by DC7~12V. - When COMP ON, normally operates with F-FAN motor. - If there is any trouble, you should select the self-diagnostic function to check the trouble before power off. - When pressing the ICE TEST S/W for a certain period of time (over Start 1.5sec), the function is accomplished.

  • Page 86

    TROUBLESHOOTING 4-2-4. When ICE MAKER(FF) does not operate 1. Water will be automatically supplied to the Ice Maker depending on temperature & time conditions, and ice will be produced to dispense. 2. Power is applied to one end of the wires. So, make sure to refer to its Exploded View whenever doing the disassembly.

  • Page 87

    TROUBLESHOOTING 4-2-5. When ICE MAKER(FZ) does not operate 1. Water will be automatically supplied to the Ice Maker depending on temperature & time conditions, and ice will be produced to dispense. 2. Power is applied to one end of the wires. So, make sure to refer to its Exploded View whenever doing the disassembly.

  • Page 88

    TROUBLESHOOTING 4-2-6. If defrost does not operate (F,R DEF Heater) R DEF ERROR F DEF ERROR Start **Measuring point of resistance value according to heater** F-DEF : CN70 “3”(Brown) ↔ CN72 ”3” (Gray) measuring resistance value(63 ohm ± 7%) Are the all deforst heater normal? R-DEF : CN70 ”1”(White) ↔...

  • Page 89

    TROUBLESHOOTING 4-2-7. When Power is not applied Caution Start At the power of SMPS PCB, the AC115(230)V power and a high-voltage over DC 170(325) V are occurred. Please take care of yourself on repair and measurement. Is the power plug connected? Make sure the plug is connected and not loose.

  • Page 90

    TROUBLESHOOTING 4-2-8. When Compressor does not run (Inverter COMP.) Start 10 minutes have passed since COMP was off Check in 10 minutes When Forced Operation Refer to the TEST mode is activated, COMP Function in this manual operates Forced Operation signal sound should be checked F-Sensor is Good COMP operation signal...

  • Page 91

    TROUBLESHOOTING 4-2-9. When alarm sounds continuously without stop(related with buzzer sound) ① If 'ding-dong'sound continuously Start Door is ajar Is door closed completely? Remove causes after comprehending the conditions of interferance by door gasket, food etc, Is water penetrated into the door switch? Replace Door S/W Seperate the door switch andcheck if the Is the door...

  • Page 92

    TROUBLESHOOTING ③ If buzzer does not sound Buzzer is installed on the panel PCB in this model. If buzzer does not sound even though the button is pressed, manual operation is started and door is opened, it should separate panel PCB and check the breakage of buzzer and bad soldering. It is very hard to repair the panel PCB because it consists of SMD assemblies.

  • Page 93

    TROUBLESHOOTING 4-2-10. When the Panel PCB does not operate normally ① When the entire or a certain section of the Panel PCB does not light up - There is a MICOM embedded in the Panel PCB. So, take care when doing repairs. And, except the Solder Touch, replace the PCB.

  • Page 94: If Pantry Panel Pcb Is Not Working Normally

    TROUBLESHOOTING 4-2-11. If Pantry Panel PCB is not working normally You should check the display after door opening because the display of this model operates only when the fresh food compartment door is opened. Start room Does R Door switch operate normally? Check and repair the switch * Refer to <how to repair door switch>...

  • Page 95: When Refrigerator Room Lamp Does Not Light Up

    TROUBLESHOOTING 4-2-12. When refrigerator ROOM Lamp does not light up When controlling the refrigerator light with Regulator(12V) : LED LAMP Applying to the F/R Room compartment (Option) → * If the Vegetable Lamp does not work properly, check the R compartment LED Lamp because it is connected with the R compartment LED Lamp in parallel.

  • Page 96: If Ice Water Is Not Supplied

    TROUBLESHOOTING 4-2-13. If ICE Water is not supplied 1. Please shut the water supplying prior to repair. 2. Power is applied to the one end of wires. Be careful when disassembling not to get an electric shock. 1) Ice Water(R) Valve PCB Typical Ground J23 JUMMPER Start Is the confirming...

  • Page 97

    TROUBLESHOOTING 2) Ice Water(F) Valve Typical PCB Ground J23 JUMMPER Start Is the confirming sound of Normal(Check Ice the valve operation heard when water valve hose) Ice maker(FZ) test switch pushed? ☞ Checking method of voltage Based on PCB typical Ground J23 JUMMPER 1) Check the voltage of IC75 -"6"(same voltage as IC01 #116) - ICE Water valve operating (about 5V±0.5V)

  • Page 98: If Cubed Or Crushed Ice Is Not Supplied

    TROUBLESHOOTING 4-2-14. If Cubed or Crushed Ice is not supplied Fridge door shall be Start closed during operation. Are Ices ejected? Are Ices in the Ice bucket? Is “Ice Off” mode ① Check the Ice making switch selected on the display ②...

  • Page 99

    TROUBLESHOOTING 4-2-15. If Cover Ice Route Motor(Geard Motor) is not working normally Caution 1. When replacing the Cover Ice Motor, pull out the plug to avoid an electric shock. 2. Be careful! When disassemble the Cover Ice Motor, spring can jumped out and may cause personal injury. 3.

  • Page 100

    TROUBLESHOOTING 4-2-16. IR Sensor Trouble-Shooting 1. When the IR sensor is defective, ice is not produced even if there is no Ice Maker Error, Ice Maker Sensor Error or the Ice Maker Function Error. (When turning on the Self Diagnosis Function, it does not produce ice even if there is no 14E, 15E or 39E being displayed.) 2.

  • Page 101

    TROUBLESHOOTING 4-2-17. LED blinking frequency depending on protecting functions If Failure Condition is detected during compressor is operating, immediately stop Compressor operating and stand by 5 minutes. During this 5 minutes, RPM command signal is not available. It means, even if available RPM command signal is applied to the compressor, it does not work and keep standing by.

  • Page 102: Pcb Diagram

    5. PCB DIAGRAM 5-1) PBA Layout with part position ..................103 5-2) PBA Layout with part position (Inverter Board) ............104 5-3) Connector Layout with part position (Main Board) ........... 105 5-4) Connector Layout with part position (Inverter Board) ..........106...

  • Page 103: Pba Layout With Part Position

    This document can not be used without Samsung's authorization PCB DIAGRAM 5-1) PBA Layout with part position 1. DC12V, 5V, GND supplied from SMPS PCB (Not Used) 2. Circuit for controlling Step-Valve (3-Way Valve) * Option 3. FAN MOTOR control part : To supply the power from 8.3V ~ 12V according to the motor types.

  • Page 104: Pba Layout With Part Position (inverter Board)

    This document can not be used without Samsung's authorization PCB DIAGRAM 5-2) PBA Layout with part position (Inverter Board) 1. PCB Power Supply : From the AC Input Voltage(115V), it supplies DC 15V and 5V to the Inverter circuit for the Compressor control.

  • Page 105: Connector Layout With Part Position (main Board)

    This document can not be used without Samsung's authorization PCB DIAGRAM 5-3) Connector Layout with part position (Main Board) 5-3-1. RF28HD* Main Valve Mid DRAWER-DOOR Switch OPEN MID DRAWER ROOM DISPLAY ICE Pipe Heater(FF) F/B ICE Water Pipe Heater (FF)

  • Page 106: Connector Layout With Part Position (inverter Board)

    This document can not be used without Samsung's authorization PCB DIAGRAM 5-4) Connector Layout with part position (Inverter Board) 5-4-1. RF28HD* AC 115V COMP ① : DC 5V ② : GND ③ : COMP. RPM ④ : COMP. Feedback...

  • Page 107: Wiring Diagram

    This document can not be used without Samsung's authorization 6. Wiring Diagram 6-1) Model : RF28HD*...

  • Page 108: Block Diagram

    This document can not be used without Samsung's authorization 7. Block Diagram 7-1) Whole block diagram 7-1-1. MODEL : RF28HD*...

  • Page 109

    This document can not be used without Samsung's authorization Block Diagram 7-1-2. MODEL : RF28HD*...

  • Page 110: Model Code Table

    8. Model code table 8-1) RF28HD*...

  • Page 111

    Asia: gspn2.samsungcsportal.com North & Latin America: gspn3.samsungcsportal.com China: china.samsungportal.com - This Service Manual is a property of Samsung Electronics Co., Ltd. Any unauthorized use of Manual can be punished under applicable International or domestic law. © Samsung Electronics Co., Ltd.

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