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Samsung RF26J7500/AA Series Service Manual
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Samsung RF26J7500/AA Series Service Manual

Samsung RF26J7500/AA Series Service Manual

French door refrigerator
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REFRIGERATOR
REFRIGERATOR
FRENCH DOOR REFRIGERATOR
BASIC : RF26J*
MODEL CODE : RF26J7500**/AA
RF26J7500**/CA
CONTENTS
1. PRECAUTIONS(SAFETY WARNINGS) ·······5
2. PRODUCT SPECIFICATIONS ······················9
3. DISASSEMBLY AND REASSEMBLY ·········26
4. TROUBLESHOOTING ································53
5. PCB DIAGRAM ···········································96
6. BLOCK DIAGRAM ····································101
7. MODEL CODE TABLE ······························103

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Summary of Contents for Samsung RF26J7500/AA Series

  • Page 1 REFRIGERATOR FRENCH DOOR REFRIGERATOR BASIC : RF26J* MODEL CODE : RF26J7500**/AA RF26J7500**/CA REFRIGERATOR CONTENTS 1. PRECAUTIONS(SAFETY WARNINGS) ·······5 2. PRODUCT SPECIFICATIONS ······················9 3. DISASSEMBLY AND REASSEMBLY ·········26 4. TROUBLESHOOTING ································53 5. PCB DIAGRAM ···········································96 6. BLOCK DIAGRAM ····································101 7. MODEL CODE TABLE ······························103...
  • 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 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.
  • Page 4 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 5 Contents 4. TROUBLESHOOTING ............................... 53 4-1) Function for failure diagnosis ........................54 4-2) Diagnostic method according to the trouble symptom (Flow Chart) ........67 5. PCB DIAGRAM .................................. 96 5-1) PBA Layout with part position ....................... 97 5-2) PBA Layout with part position (Inverter Board) ................98 5-3) Connector Layout with part position (Main Board) ................
  • Page 6 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 7 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 regrigerator prior to repair. CAUTION/WARNING SYMBOLS DISPLAYED SYMBOLS means “Prohibited”. Indicates that a danger of death or Warning means “Do not disassemble”.
  • Page 8 Precautions(Safety Warnings) ❈ Please let users know following warnings & cautions in detail. Warning & Caution Customers should not store narrow Drugs requiring precise Customers should not store glass or long bottles or food in a small temperatures should not be stored bottles of liquid in the freezer in the refrigerator.
  • Page 9 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, or approximately 660lbs(299kg).
  • Page 10 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 11 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 12 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 13 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 AC115V 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 14 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 Auto Pull Out Drawer Freezer Drawer Bin...
  • Page 15 Product Specifications 2-4) Model Specification SAMSUNG ITEM SPEC RF26J* Appearance Cooling Tech Twin Cooling Product Zone Door Shape Contour Special Room Cool Select Pantry F-Room 250↓ Cooling Speed(Min) R-Room 270↓ F-Room -26°C↓ -31.9 89.6 (32°C) R-Room 2°C↓ -0.1 F-Room -18°C↓...
  • Page 16 Product Specifications RF26J* ITEM Model Ice & Water Dispenser 32 3/4" (830mm) On Cabinet 29 21/32" (753mm) W/O Handle 34" (863mm) External size With Handle 36 1/2" (925mm) W/O Hinge Cap 68 7/8 Inch (1749mm) With Hinge Cap 70 Inch (1777mm) Total 29.1 Cu.ft (824.0ℓ) Net Capacity...
  • Page 17 Product Specifications Items Specification Model MKV190CL2B/E01 Model NC4EVA5ALM/E01 / MKV190CL2B/E01 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 18 Product Specifications Items Specification Model MKV190CL2B/E01 Defrost Heater(FRE) Heated at F Defrost AC120V, 230W Defrost Heater(REF) Heated at R Defrost AC120V, 120W Heater-Ice Maker AC120V, 141W Interlock with French AC120V, 2.5W DISPENSER Heater Heater AC120V, 12W FRENCH Heater DC12V, 2.3W R-ROOM Heater Water Pipe DC12V, 2W...
  • Page 19 Product Specifications 2-5) Dimensions of Refrigerator (Inches) Model : RF26J* 32 3/4" (830mm) 54 1/4" (1380mm) 36 1/2" (325mm) 34" (863mm) 3/16"(5mm) 1 1/4" (30.6mm)
  • Page 20 Product Specifications 2-6) Optional Material Specification Part Name Part Code AMOUNT ASSY-PACKING SUB DA99-03490L LED LAMP REF DA97-12606A LED LAMP REF(SIDE) DA41-00519Q LED LAMP FRE DA41-00676G...
  • Page 21 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 22 Product Specifications 2-7-1. PRINCIPLE OF FREEZEER...
  • Page 23 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 24 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 25 Product Specifications 2-7-3. Refrigeration Cycle Type HM Cycle Compressor Condenser Hot Pipe Back Cluster Pipe Dryer Capillary Tube Refrigerator Evaporator ICE Pipe Freezer Evaporator Suction Pipe Compressor...
  • Page 26 Product Specifications 2-8) Cooling Air Circulation...
  • Page 27 3. Disassembly and Reassembly 3-1) PRECAUTION ........................27 3-2) Refrigerator Door ......................28 3-3) Door Handle Refrigerator ....................29 3-4) Door Handle Freezer & Flex zone ................30 3-5) Refrigerator Light ......................31 3-6) Cover-Display & Water-Dispenser ................32 3-7) Water-Dispenser ......................33 3-8) Glass Shelf ........................34 3-9) Foldable Glass Shelf ......................34 3-10) Vegetable &...
  • Page 28 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 29 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 30 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 31 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) Refrigerator Light Part Name How To Do Descriptive Picture 1. Press the tabs on the back of the Lamp Cover and take it off. Refrigerator Light 2. Remove the 3 screws And separate the LED panel.
  • Page 33 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 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 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 by pulling the roller part and lifting it up. Vegetable & Fruit Drawers Shelf 2. Remove the vegetable & fruit drawer shelf by pulling it out.
  • Page 37 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 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 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 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 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 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 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 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 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. Take out the lower basket (①) by lifting the basket up from rail system. ① The box may get scratch on its side by getting twisted left CAUTION and right when disassembling...
  • Page 46 Disassembly and Reassembly 3-21) Ice-Maker Descriptive Picture Part Name How To Do 1. When pressing the Energy-Saver and the Fridge buttons on the Display together for 8 seconds at the same time, it will convert to the Test Mode and the entire Display function will be off.
  • Page 47 Disassembly and Reassembly Descriptive Picture Part Name How To Do 7. Remove the screw from the Duct Tray-ice. 8. With a flat blade screwdriver, push the duct to the right and remove it from the locking tab. (Refer to the image.) 9.
  • Page 48 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. Disconnect the FAN-AUGER-ASSY Connector. 2. 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.
  • 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 unplugged.
  • Page 50 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 Disassembly and Reassembly 3-26) Comp Cooling Fan Part Name How To Do Descriptive Picture 1. Unscrew 3 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 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 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 4. TROUBLESHOOTING 4-1) Function for failure diagnosis ..................54 4-2) Diagnostic method according to the trouble symptom(Flow Chart) ......67...
  • Page 55 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 56 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 57 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 58 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 59 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 60 TROUBLESHOOTING 4-1-4. Display function of Load condition RF26J* ① ① 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 61 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 62 TROUBLESHOOTING 4-1-5. Cooling OFF mode setting function ① ① ① ① If Freezer key + Alarm key + Fridge key are pressed for 5 seconds, Cooling Off mode will be started. 1) If Freezer key + Alarm key + Fridge key are pressed simultaneously for 5 seconds during normal operation, Cooling Off mode will be started with buzzer sound(ding-dong).
  • Page 63 TROUBLESHOOTING 4-1-7. 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 ①...
  • Page 64 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 65 TROUBLESHOOTING 4-1-8. Option TABLE 1) Temperature changing table of freezer compartment Set item Freezer Temp Shift MODEL RF28HF* Reference Fridge Room 7-SEG 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 Reference Value +2℉(+1.0℃) +3℉(+1.5℃)
  • Page 66 TROUBLESHOOTING 3) Operation rate changing table of dispenser heater Set item Dispenser Heater Rate Fridge Room 7-SEG Reference 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 Set item...
  • Page 67 TROUBLESHOOTING 5) Temperature changing table of ICE ROOM compartment Set item Freezer Temp Shift MODEL RF28HF* Reference Fridge Room 7-SEG 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℃) +2℉(+1.0℃) +3℉(+1.5℃) +4℉(+2.0℃) +5℉(+2.5℃) +6℉(+3.0℃) +7℉(+3.5℃)
  • Page 68 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 ) ℃...
  • Page 69 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 2246...
  • Page 70 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 71 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 72 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 73 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 Ambient Sensor unit ** Placed in the right top table of upper hinge.
  • Page 74 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 75 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 76 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 77 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 78 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 79 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 / 680 ohm ± 7% 1) Wire connector Initial Working...
  • Page 80 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 81 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 82 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 83 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 R-DEF : CN70 ”1”(White) ↔...
  • Page 84 TROUBLESHOOTING 4-2-7. When Power is not applied Caution At the power of SMPS PCB, the AC115(230)V Start 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 85 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 0~800Hz 50%...
  • Page 86 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 87 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 88 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 89 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 90 TROUBLESHOOTING 4-2-12. When refrigerator ROOM Lamp does not light up When controlling the regrigerator 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 91 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 92 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 93 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 94 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 95 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 96 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 97 5. PCB DIAGRAM 5-1) PBA Layout with part position ..................97 5-2) PBA Layout with part position (Inverter Board) ............98 5-3) Connector Layout with part position (Main Board) .............99 5-4) Connector Layout with part position (Inverter Board) ..........100...
  • Page 98 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 99 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 100 This document can not be used without Samsung's authorization PCB DIAGRAM 5-3) Connector Layout with part position (Main Board) 5-3-1. RF26J Main Valve Mid DRAWER-DOOR Switch MID DRAWER ROOM DISPLAY OPEN ICE Pipe Heater(FF) F/B ICE Water Pipe Heater (FF)
  • Page 101 This document can not be used without Samsung's authorization PCB DIAGRAM 5-4) Connector Layout with part position (Inverter Board) 5-4-1. RF26J AC 115V COMP ① : DC 5V ② : GND ③ : COMP. RPM ④ : COMP. Feedback...
  • Page 102 This document can not be used without Samsung's authorization 7. Block Diagram 7-1) Whole block diagram 7-1-1. MODEL : RF26J...
  • Page 103 Block Diagram 7-1-2. MODEL : RF26J...
  • Page 104 8. Model code table...

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Rf26j seriesRf26j7500/ca series
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