REFRIGERATOR BOTTOM MOUNT FREEZER BASIC : RFG297AA MODEL NAME : RFG297AARS RFG297AABP RFG297AAWP RFG297AAPN MODEL CODE : RFG297AARS/XAA RFG297AABP/XAA RFG297AAWP/XAA RFG297AAPN/XAA REFRIGERATOR CONTENTS 1. PRECAUTIONS(SAFETY WARNINGS) ·4 2. PRODUCT SPECIFICATIONS ·····8 3. DISASSEMBLY AND REASSEMBLY ·26 4. TROUBLESHOOTING ········52 5. PCB DIAGRAM ··········103 ·········108 6. WIRING DIAGRAM· 7.
WARNING IMPORTANT SAFETY NOTICE The service guide is for service men with adequate backgrounds of electrical, electronic, and mechanical experience. Any attempt to repair a major appliance may result in personal injury and property damage. The manufacturer or dealer cannot be responsible for the interpretation of this information. SAMSUNG ELECTRONICS AMERICA, INC. Technical Service Guide Copyright ⓒ2008 All rights reserved.
Contents 1. Precautions(Safety Warnings) ·····································4 2.
Contents 4-2-6. If Power is not supplied ··································78 4-2-7. If compressor does not operate·······························79 4-2-8. When alarm sound continuous without stop(related with buzzer sound) ·············80 4-2-9. If Panel PCB does not work normally ····························82 4-2-10. If Pantry Panel PCB is not working normally·························83 4-2-11. When refrigerator ROOM Lamp does not light up ······················84 4-2-12.
1. PRECAUTIONS(SAFETY WARNINGS) ● Unplug the appliance before the changing or repairing the electric parts. → Be careful the electric shock. ● When exchanging the parts, use the correct parts. → Check the model name, rating voltage, rating current, running temperature symbols. ● When troubleshooting, connect firmly the types of harness. → Make not to be separated when some power is imposed. ● Check the traces of water infiltration at the electric parts.
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 Warning SYMBOLS means “Prohibited”. Indicates that a danger of death or serious injury exists. means “Do not disassemble”. means “No contact”. means ”Warning or Caution”. Caution Indicates that a risk of personal injury or material damage exists.
PRECAUTIONS(SAFETY WARNINGS) ❈ Please let users know following warnings & cautions in detail. Warning & Caution Do not allow users to put bottles or kinds of glass in the freezer. Do not allow users to store narrow and lengthy bottles or foods in a small multi-purpose room. Do not allow users to store pharmaceutical products, scientific materials, etc., in the refrigerator. ●Freezing of the contents may inflict a wound.
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). MOVING Protect the finish of the flooring. Cut a large section of the cardboard carton and place under the refrigerator where you are working.
2.
2. PRODUCT SPECIFICATIONS 2-1) Introduction of Main Function ● A newly developed SAMSUNG bottom mount freezer in 2008 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. Twin Cooling System ● The refrigerator and the freezer have two evaporators.
2. PRODUCT SPECIFICATIONS ▶ Changing Items New Model NO Item 1 Easy Handle The freezer door is more user-friendly. So, it comes as much convenient. drawer The dimension of the right-side drawer is 6:4 (H x W) with the shelf being raised. So, the right-side drawer can be pulled out with the left door closed.
PRODUCT SPECIFICATIONS 2-2) Specifications ELECTRICAL SPECIFICATIONS Defrost Control From 24 to 32 hrs Thermo Bimetal Protector 140°F(60℃)(off) 104°F(40℃)(on) Defrost Thermistor(502AT) 50°F(10℃)(off) Electrical Rating AC115V 60Hz 11.6 Amps Maximum Current Leakage 0.25 mA Maximum Ground Path Resistance 0.
PRODUCT SPECIFICATIONS 2-3) Interior Views Refrigerator Light Auto Door Closer Ice-Maker Foldable-Shelf Water Filter Dairy Compartment Slide-Shelf Slide-Shelf Vertical Hinged Section Door Bins Quick-Space Glass Shelf Vegetable & Fruit Drawers Cool Select Pantry Light Pull Out Drawer Tilting Pocket Freezer Freezer Drawer Bin 12 TM
PRODUCT SPECIFICATIONS 2-4) Model Specification ITEM SAMSUNG MAYTAG LG RFG297AA MFI2568AES LFX25960ST Cooling Tech Twin Cooling Mono Cooling Mono Cooling Door Shape Contour Contour Contour Pantry Pantry SPEC Appearance Product Zone Noise Performance Special Room Cool Select Pantry Cooling F-Room 250↓ 199.2 246 224 Speed(Min) R-Room 250↓ 197.3 575 232 F-Room -26.0↓ -28.1 -27.2 -28.8 R-Room 2.0↓ 0.7 1.6 -1.8 F-Room -18.0↓ -21.5 -20.9 -22.5 R-Room 5.0↓ 1.
PRODUCT SPECIFICATIONS 2-5) Model Specification &Specification Chart ITEM RFG297AA Model W 35 3/4 inch (908mm) On Cabinet 29 1/8 inch (740mm) W/O Handle 32 7/8 inch (836mm) With Handle 35 3/4 inch (905mm) W/O Hinge Cap 68 3/4 inch (1744mm) With Hinge Cap 70 Inch (1778mm) D External size H Net Capacity Ice & Water Dispenser with Pantry Total 28.5 Cu.ft (807.1ℓ) Freezer 19.5 Cu.ft(552.2ℓ) Refrigerator 9.0 Cu.ft(254.9ℓ) 55.4% Efficiency of Volume Weight Set 328.
PRODUCT SPECIFICATIONS Specification Model RFG297AA Compressor Components for Freezer Defrost Sensor Defrost Cycle Refrigerator Freezer Evaporator Bimetal Room Temperature Sensor Components Defrost Related Components Items Model BK190C-L2C Starting type BLDC Oil Charge FREOL α- 15c Freezer SPLIT FIN TYPE Refrigerator SPLIT FIN TYPE Condenser Forced and Natural Convection Type Dryer Molecular shieve XH-9 Capillary tube(Dia x Length) R : 0.032” x 118” (0.82mm x 3000mm) / F : 0.
PRODUCT SPECIFICATIONS Items Specification Model REG297AA Defrost Heater(FRE) Heated at F Defrost AC 115V, 240W Defrost Heater(REF) Heated at R Defrost AC115V, 120W DISPENSER Heater Interlock with French Heater AC115V, 2W FRENCH Heater - AC115V, 8W ICE Duct Heater Interlock with Defrost Heater (FRE) AC115V, 4W Water Tank Heater - DC 12V, 2W Bimetal thermo for Preventing Overheating of Refrigerator Lamp Electric Components Over Load Relay AC125V 6A / AC250V 3A Off: 140℉(60℃)/ On : 1
2 1/2"(64.5mm) 24 42 1/2"(1080.5mm) 69 3/4"(1778mm) 9/16"(15mm) 1/4"(618mm) 35 5/8"(905mm) 32 7/8"(836mm) 3/16"(5mm) 1.
PRODUCT SPECIFICATIONS 2-7) Optional Material Specification Part Name Part Code FILTER WATER-ASSY DA29-00003B ASSY-PACKING SUB DA99-00240S INCANDESCENT LAMP 4713-001223 LED LAMP DA96-00329A 18 AMOUNT 1 1 1 1
PRODUCT SPECIFICATIONS 2-8) Refrigerant Route in Refrigeration cycle 1. Compressor → Sub-condenser → Hot Pipe → Back Cluster Pipe → Dryer → R Capillary Tube → Refrigerator Evaporator → Freezer Evaporator → Suction Pipe → Compressor 2.
PRODUCT SPECIFICATIONS 2-8-1.
PRODUCT SPECIFICATIONS 2-8-2. Operation theory of refrigeration cycle components ■ Condenser 1) Role: A device which radiates heat to the outside (water/air) to make liquid state for the high temperature / high pressure gas refrigerant discharged from compressor 2) Types A. Air-cooling Type : Condense air by circulating naturally or manually. 1) Natural Convection Type : Used for the household refrigerator which has small condensing capacity.
PRODUCT SPECIFICATIONS 2-8-3. Operation theory of refrigeration cycle components ■ 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. 3.Types of Evaporator A.
PRODUCT SPECIFICATIONS 2-8-4. Operation theory of refrigeration cycle components ※.Influence of moisture ① Moisture precipitation – Blocked by ice ② Refrigerant and reaction ③ Life reduction of oil ④ Acceleration of oxidization ⑤ Copper plating phenomenon ⑥ Gas dissolution by the interaction of synthetic insulating material (insulator) ※.Influence of foreign substance ① Increase of condensed temperature. ② Increase of temperature.
PRODUCT SPECIFICATIONS 2-8-5.
PRODUCT SPECIFICATIONS 2-9) Cooling Air Circulation Refrigerator Freezer 25
3.
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. • Do not use a cord that shows cracks or abrasion damage along its length or at either end. • Do not plug several appliances into the same multiple power board.
DISASSEMBLY AND REASSEMBLY 3-2) Refrigerator Door Part Name How To Do Descriptive Picture 1. With the door opened, remove the Top Table cap(1⃞) with a Flat head screwdriver, and close the door. 1⃞ 2⃞ 2. Remove the 3 screws holding down the Top Table and remove the Top Table(2⃞). Refrigerator Door 3. Disconnect the electrical connector(3⃞) above the upper right door hinge and the 3 electrical connectors(4⃞) above the upper left door hinge.
DISASSEMBLY AND REASSEMBLY Part Name How To Do Descriptive Picture 5. Lift the door straightly up to remove. Refrigerator Door Part Name 6. With a Philips head screwdriver, remove the two screws ([10]) attatched to the lower left and right door hinges. With a wrench(10mm), remove the 2 flat head screws ([11]) attatched to the lower left and right door hinges. Remove the lower left and right door hinges ([12]). How To Do 1. Using a wrench, unscrew the two screws. And disassemble the door handle.
DISASSEMBLY AND REASSEMBLY 3-3) Door Handle Freezer Part Name How To Do Descriptive Picture 1. Remove the Cap Door with a flat-blade(-) screwdriver. 2.Remove 4 screws 1⃞ Door Handle Freezer 3. Lift up the handle to have the Slider Handle Fre(1⃞) pushed back. 4. After having the Slider Handle Fre(1⃞) pushed back, screw up at the hole. 5.Remove the door handle by lifting it up.
DISASSEMBLY AND REASSEMBLY 3-4) Refrigerator Light Part Name How To Do Descriptive Picture 1. Remove the lamp cover by pulling it down as pushing the rear of lamp cover. Refrigerator Light 2. Remove the screw. And separate the LED panel. 3-5) Cover-Display & Water-Dispenser Part Name How To Do 1. Hold the Ice & Water select tab and pull it forward to take off the Display Panel. Take care not to break it. Cover-Display 2. Disengage the housing connect of display cover. 3.
DISASSEMBLY AND REASSEMBLY 3-6) Water-Dispenser Part Name How To Do 1. Disengage the 3 Housing Connectors. 2. Remove 2 screws of the Case Ice Route Assy. Water-Dispenser 3. Pull the Case Ice Route Assy. 4. Push the hook and remove the Micro Switch.
DISASSEMBLY AND REASSEMBLY Part Name How To Do Descriptive Picture hose 1. Assembly shall be in order from the disassembly. Case-Ice and Route shall be assembled inside of hose. Otherwise, assemble cannot be accomplished. Water-Dispenser 2. When assembling CoverDisplay, first insert it from leftside and then assemble to rightside. Otherwise, the hook can be broken. 3-7) Glass Shelf Part Name Glass Shelf How To Do Remove the shelf by lifting the front part of the shelf up and pulling it out.
DISASSEMBLY AND REASSEMBLY 3-8) Foldable Glass Shelf Part Name Foldable Glass Shelf How To Do Descriptive Picture Remove 2 screws of the Folderble Glass Shelf 3-9) 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. (Refer to the picture) Part Name How To Do 1.
DISASSEMBLY AND REASSEMBLY 3-10) Cool Select Pantry Part Name How To Do 1. Remove the cool select pantry by pulling the roller part and Cool Select Pantry lifting it up. Cool Select Pantry Cover 1. Remove the cool select pantry cover by lifting the central part of the cover while pushing it to the left. Cool Select Pantry 1. Remove the cool select pantry shelf by lifting the front part of Shelf the shelf while pulling it. 1.
DISASSEMBLY AND REASSEMBLY 3-11) Water Tank Part Name How To Do The Water Tank is located in the lower part of the fridge. Before disassembling the Water Tank take out shelves and drawers and pantry located in front of the Water Tank. 1. Remove 2 screws of the Water Tank cover. 2. Disengage the housing connector. Water Tank 3. Remove the 2 screws attached to the Water Tank Heater. Remove the Water Tank heater. 4. Remove the 2 screws attached to the Water Tank. Remove the Water Tank cover.
DISASSEMBLY AND REASSEMBLY Part Name How To Do One Water Tube is located in the machine compartment of the refrigerator. Before disassembling the Water Tube, take out the compressor cover. 5. Remove the water valve fixed by the screw. 6. Disconnect the water tube by pushing the tube fitting apart as shown in the picture. Water Tank The other Water Tube is located in the Top Table of the refrigerator. Before disassembling the Water Tube, take out the Top table. 7.
DISASSEMBLY AND REASSEMBLY 3-12) Motor Damper Part Name How To Do Descriptive Picture 1. Remove the cool select pantry. Remove the screw part of lower motor damper part and then push the motor damper down. Motor Damper 2. Disengage 2 housing connectors from the rear motor damper. (Refer to the picture) 3-13) Water Filter (Disassembly) Part Name How To Do 1. Remove the shelf by lifting the front plane of the shelf up and pulling it out. Water Filter 2. Remove the water filter by turning it clockwise.
DISASSEMBLY AND REASSEMBLY 3-14) Water Filter (Reassembly) Part Name How To Do Descriptive Picture 1. Place the part of (ⓐ) arrow (that is indicating in the picture) in the middle of the front filter cover and push it up. Water Filter ⓐ 2. Turn the water filter counterclockwise until central horizontal line of filter cover and both ends of water filter label are aligned. (Refer to the picture.) 3-15) Gallon Door Bin Part Name How To Do Gallon Door Bin 1. Remove the gallon door bin by lifting it up.
DISASSEMBLY AND REASSEMBLY 3-16) Vertical Hinged Section Part Name How To Do 1. Remove 2 screw cap parts 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. 4. Remove the vertical hinged section by lifting the vertical hinge up.
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) 2. Unscrew 4 screws. Evaporator Cover In Refrigerator 3. Remove the the lower part of angle mid by pulling it out and pushing it down. (Refer to the picture) 4. Remove the hook by pulling it from the lower part and pushing the cover down. (Refer to the picture) 5. Disconnect the housing connector of the rear plane.
DISASSEMBLY AND REASSEMBLY 3-18) Evaporator In Refrigerator Part Name How To Do 1. Remove the the housing cover by pushing both lateral sides of the housing cover and pulling it out. (Refer to the picture) 2. Disconnect the housing connector part. (Refer to the picture) Evaporator In Refrigerator 3. Unscrew 2 screws. 4. Remove the evaporator by lifting the bottom side of it up and pulling it out.
DISASSEMBLY AND REASSEMBLY 3-19) Freezer Door Part Name How To Do Descriptive Picture 1. Pull the drawer open to full extension. 2. Remove the tilting Pocket(①) by pulling the both brackets(②) upward at the same time. ② ① Freezer Door 3. Take out the lower basket(③) by lifting the basket up from rail system. 4. Unscrew 4 bolts. (2 bolts each on the both sides) 5. Lifting up the freezer door, remove the freezer door from the rail.
DISASSEMBLY AND REASSEMBLY 3-20) Pull Out Drawer Part Name How To Do 1. Slide the drawer in as much as possible. Door Handle Freezer 2. Lift the drawer up. 3. Remove the pull out drawer by lifting the bottom part of drawer bin and pulling it out.
DISASSEMBLY AND REASSEMBLY 3-21) Ice-Maker Part Name How To Do 1. Pull the lever forward and take out the ice bucket. 2. Remove 1 screw of the Cover. Ice Maker 3. Disassemble the cover with a flat-blade(-) screwdriver and pull it out. 4. Disengage the 2 housing connectors. 5. Push the hook and pull the IceMaker out. 6. To disassemble, push the tab and pull the Case-Auger and the motor out.
DISASSEMBLY AND REASSEMBLY 3-22) Freezer Light Part Name How To Do Freezer Light 1. Remove the light by pulling the light cover down while pushing the rear plane of light cover. Descriptive Picture 3-23) Door Switch In Freezer Part Name How To Do 1. Remove the freezer drawer bin by using a flat-blade(-) screwdriver.(Refer to the picture) Door Switch In Freezer 2. Disconnect the housing connector part.
DISASSEMBLY AND REASSEMBLY 3-24) Evaporator Cover In Freezer Part Name How To Do Descriptive Picture 1. Remove the freezer door and freezer drawer by pulling out the drawer and then unscrewing 2 screws. Evaporator Cover In Freezer 2. Lift up the evaporator cover. 3. Disengage the 3 housing connectors and remove the evaporator cover. 3-25) Evaporator In Freezer Part Name How To Do 1. Remove the housing cover by pushing both lateral sides of housing cover part and pulling it out.
DISASSEMBLY AND REASSEMBLY 3-26) Machine Compartment Part Name How To Do 1. Unscrew 5 screws of cover compressor. 2. Disengage the housing connector. (Refer to the picture) 3. Remove the hooker of support circuit motor by lifting the hooker up and pulling it out. Motor Fan 4. Remove the screw with a flatblade screwdriver. (Refer to the picture) 5. Remove the motor fan by pulling the fan out while graping the motor part. (Refer to the picture) 6. Unscrew 2 screws fixed in the motor. 7.
DISASSEMBLY AND REASSEMBLY Part Name How To Do 1. Disengage the housing connector. Relay O/L 2.Remove Cover Relay. 3. Remove the relay O/L with a flat-blade screwdriver. (Refer to the picture) 1. Unscrew the screw which is fixing the Water Valve. 2. Remove the hook part of the hose by pushing it down. Water Valve 3. Remove 2 water hose parts while pushing the upper part of ①. (Refer to the picture) 4. Disengage 2 housing connectors. 5. Remove the hose connected by the nut with a wrench(8mm).
DISASSEMBLY AND REASSEMBLY Part Name How To Do 1. Unscrew 2 screws. 2. Disengage the housing connector. Power Cord & Noise Filter 3. Unscrew 3 earth screws. 4. Remove the cover by pushing the hook up using a flat-blade(-) screwdriver. (Refer to the picture) 5. Disengage the housing connector to separate the power cord and noise filter.
DISASSEMBLY AND REASSEMBLY 3-27) Electric Box Part Name How To Do 1. Pull the refrigerator forward to have enough space to work at the rear side of the appliance. 2. Unscrew 2 screws of the PCB cover. PBA Main 3. Disengage all housing connectors from the main PCB. 4. Unscrew 2 PCB fixing screws. 5. Remove the main PCB by lifting the upper part of the hook up. (Refer to the picture) PBA SMPS 1. Remove the cover PCB and then disengage the housing connector connected with main PCB.
4. TROUBLESHOOTING 4-1) FUNCTION FOR FAILURE DIAGNOSIS ···························53 4-1-1. TEST MODE (MANUAL OPERATION / MANUAL DEFROST FUNCTION) ···········53 4-1-2. DISPLAY FUNCTION OF COMMUNICATION ERROR ···················54 4-1-3. SELF-DIAGNOSTIC FUNCTION ····························55 4-1-4. DISPLAY FUNCTION OF LOAD CONDITION ·······················58 4-1-5. EXHIBITION MODE SETTING FUNCTION ························59 4-1-6. OPTION SETTING FUNCTION·····························60 4-1-7.
TROUBLESHOOTING 4-1) Function for failure diagnosis 4-1-1. Test mode (manual operation / manual defrost function) ● If Energy Saver Key + Fridge 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.
TROUBLESHOOTING 2) Simultaneous manual defrost(fresh food and freezer compartments) function 2-1) If any key is pressed one more time during manual operation(fresh food compartment), "Fd" shows in the display and then manual operation will be canceled at once and fresh food compartment will be defrosted. 2-2) At this moment, alarm beeps for 3 seconds (0.1 sec ON/ 1 sec OFF) during manual defrost function of fresh food and freezer compartment.
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.
TROUBLESHOOTING Self-diagnosis CHECK LIST NO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Trouble item Ice Maker Sensor Error R-Sensor Error R-DEF-Sensor Error R-FAN Error Ice Maker Error R-DEF, Heater Error Ambient-Sensor Error F-Sensor Error F-DEF-Sensor Error F-FAN Error C-FAN Error Ice Room-Sensor Error F-DEF.
TROUBLESHOOTING Self-diagnostics check list LED Item Trouble contents R-1-ⓐ Ice Maker Sensor Error R-1-ⓑ R-Sensor Error R-1-ⓒ R-DEF-Sensor Error Display error : separation of sensor housing part, contact error, disconnection, short circuit Display error of detecting temperature of sensor: more than 149℉ (+65°C) or less than -58℉(-50°C) R-1-ⓓ R-FAN Error Display error during operation of applicable fan motor : Feed Back signal line contact error, separation of motor wire, motor error Voltage of
TROUBLESHOOTING 4-1-4. Display function of Load condition ① ① ② ① If Energy Saver Key + Lighting 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 Fridge, load condition mode will be started. 1) If Power Energy Saver Key + Lighting 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.
TROUBLESHOOTING Load mode Check list Display LED R-1-ⓐ R-1-ⓑ R-1-ⓒ R-1-ⓓ R-1-ⓔ R-1-ⓕ F-1-ⓔ,ⓕALL LED Off R1-ⓖ F-1-ⓐ F-1-ⓑ F-1-ⓒ F-1-ⓓ F-1-ⓔ F-1-ⓕ F-10-ⓖ F-1-ⓖ F-10-ⓐ F-10-ⓑ F-10-ⓓ F-10-ⓔ R-10-ⓐ R-10-ⓑ Display contents R-FAN High R-FAN Low R-DEF Heater Start Mode Overload condition Low temperature condition Normal Condition Exhibition Mode COMP.
TROUBLESHOOTING 4-1-6. Option setting function ● If Freezer Key+ lighting 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 ① ① If Freezer Key+ lighting Key are pressed simultaneously for 12 seconds, option setting mode will be started.
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.
TROUBLESHOOTING 4-1-7. Option TABLE 1) Temperature changing table of freezer compartment Set item Freezer Temp Shift MODEL RFG29***** Reference Value Fridge Room 7-SEG 0 Setting value FZ compartment Code Temp. compensation 0 0℉(0.0℃) 1 -1℉(-0.5℃) 2 -2℉(-1.0℃) 3 -3℉(-1.5℃) 4 -4℉(-2.0℃) 5 -5℉(-2.5℃) 6 -6℉(-3.0℃) 7 -7℉(-3.5℃) 8 +1℉(+0.5℃) 9 +2℉(+1.0℃) 10 +3℉(+1.5℃) 11 +4℉(+2.0℃) 12 +5℉(+2.5℃) 13 +6℉(+3.0℃) 14 +7℉(+3.5℃) 15 +8℉(+4.
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 ℃ ℉ -50 -49 -48 -47 -46 -45 -44 -43 -42 -41 -40 -39 -38 -37 -36 -35 -34 -33 -32 -31 -30 -29 -28 -27 -26 -25 -24 -23 -22 -21 -20 -19 -18 -17 -16 -15 -14 -13 -12 -11 -10 -9 -8 -7 -6 -58 -56.2 -54.4 -52.6 -50.8 -49 -47.2 -45.4 -43.6 -41.8 -40 -38.2 -36.4 -34.6 -32.8 -31 -29.2 -27.4 -25.6 -23.
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. - The appliance will not stop operating when the error of sensor is detected during operation of the appliance. But normal freezing might be not operated if the appliance is operated by the emergency operation mode.
TROUBLESHOOTING 2) If R Sensor has trouble ERROR Code Start DATA1. Temperature table Is MAIN PCB Connector CN30 and CN76 inserted correctly? YES ** Measuring point of resistance value according to Sensor ** R : CN30#6 ↔ CN76#1 measuring resistance value ** 0Ω: Short trouble / ∞Ω: Open trouble Is R Sensor unit normal? Refer to circuit diagram in the manual Sensor MICOM/Connector number Connector CN30#6(White) to R REG1 HEAT-SINK PCB typical Ground Voltage measured between 4.6V ~ 0.6V.
TROUBLESHOOTING 3) If R DEF Sensor has trouble ERROR Code Start DATA1. Temperature table Is MAIN PCB Connector CN30 and CN76 inserted correctly? YES ** Measuring point of resistance value according to Sensor ** R-DEF : CN30#8 ↔ CN76#1 measuring resistance value ** 0Ω: Short trouble / ∞Ω: Open trouble Is R DEF Sensor unit normal? Refer to circuit diagram in the manual Sensor MICOM/Connector Number Connector CN30-"8"(Sky-blue) and R DEF REG1, HEAT SINK PCB common Ground Voltage measured between 4.6V ~ 0.
TROUBLESHOOTING 4) If Ambient Sensor has trouble ERROR Code Start DATA1. Temperature table ** Measuring point of resistance value according to Sensor ** Ambient : CN31#1 ↔ #4 measuring resistance value ** Placed in the right top table of upper hinge.
TROUBLESHOOTING 5) If F Sensor has trouble ERROR Code Start DATA1. Temperature table Are MAIN PCB Connector CN30 and CN76 inserted correctly? YES ** Measuring point of resistance value according to Sensor ** F : CN30#3 ↔ CN76#1 measuring resistance value ** 0Ω: Short trouble / ∞Ω: Open trouble Is F Sensor unit normal? Refer to circuit diagram in the manual Sensor MICOM/Connector number Connector CN30#3(Red) to F REG1, HEAT SINK PCB typical Ground Voltage measured between 4.6V ~ 0.6V.
TROUBLESHOOTING 6) If F DEF Sensor has trouble ERROR Code Start DATA1. Temperature table Are MAIN PCB Connector CN30 and CN76 insert correctly? YES ** Measuring point of resistance value according to Sensor ** F-DEF : CN30#4 ↔ CN76#1 measuring resistance value ** 0Ω: Short trouble / ∞Ω: Open trouble Is F DEF Sensor unit normal? Refer to circuit diagram in the manual Sensor MICOM/Connector number Connector CN30#4(Orange) to F DEF REG1, HEAT SINK PCB typical Ground Voltage measured between 4.6V ~ 0.6V.
TROUBLESHOOTING 7) If Ice Room Sensor has trouble ERROR Code Start DATA1.
TROUBLESHOOTING 8) If Pantry Sensor has trouble ERROR Code Start DATA1. Temperature table Is MAIN PCB Connector CN30 and CN76 insert correctly? YES ** Measuring point of resistance value according to Sensor ** Pantry : CN30#9 ↔ CN76 #1 measuring resistance value ** 0Ω: Short trouble / ∞Ω: Open trouble Is Pantry Sensor normal? Refer to circuit diagram in the manual Sensor MICOM/Connector number Connector CN30#9(White-black) to Pantry REG1 HEAT SINK PCB typical Ground Voltage measured between 4.6V ~ 0.
TROUBLESHOOTING 9) If Pantry Room Damper Heater has trouble ERROR Code Start Measure the resistance between ①-② after CN91 connector open 145ohm ± 7% Is Damper Heater normal?(about145ohm) NO YES Is MAIN PCB connector (CN91) inserted correctly? Replace Damper NO Bad contact of connector/ insert correctly YES Initial Damper Damper MICOM power On heater off heater On #42 3.5V ~ condition 3.5V ~ 0V 4.8V 4.
TROUBLESHOOTING 10) If Tank Water Heater has trouble ERROR Code Start Is MAIN PCB connector (CN79) inserted correctly? NO YES Measure the resistance between ⑥-⑩ after CN79 connector open 72ohm ± 7% Is Tank Water Heater normal?(about72ohm) Bad contact of connector/ insert correctly NO YES Working Initial MICOM power On Heater off heater #6 3.5V ~ condition 3.5V ~ 0V 4.8V 4.
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. -. If there is a trouble, you should select the self-diagnostic function to check the trouble before power off.
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. Start - When pressing the ICE TEST S/W for a certain period of time (over 1.5sec), the function is accomplished.
TROUBLESHOOTING 4-2-4. If Ice Maker does not operate 1. Water is automatically supplied to the Ice Maker depending on temperature & time condition and Ice Maker Dispenses cubed or crushed ice. 2. Power is applied to the one end of wires. Be careful when disassembling and shall refer to its exploded diagram in any case. 3. Ice Maker operation shall be checked after pressing the Ice Maker testing switch. (Freezer Ice Maker) It is not possible to check when the power is disengaged. 4.
TROUBLESHOOTING 4-2-5. If defrost does not operate (F,R DEF Heater) - If defrost has trouble, select the self-diagnostic function to detect the error of defrost heater before Power Off.
TROUBLESHOOTING 4-2-6. If Power is not supplied Caution At the power of main PCB, the AC115V power and a high-voltage over DC 170V are occurred.Please take care of yourself during repair and measurement.
TROUBLESHOOTING 4-2-7. If compressor does not operate Start Did 5 mins pass after Compressor OFF ? No Yes Refer to test function in the manual Does compressor work with manual operation? Yes Did buzzer of manual operation sound? (Check certainly after manual operation) 0~800Hz 50% Duty Signal output No No No Is CN75 PIN #4 High?(2.
TROUBLESHOOTING 4-2-8. When alarm sounds continuously without stop(related with buzzer sound) ① If 'ding-dong' sounds continuously Start Is door closed completely? Door is ajar Remove causes after comprehending the conditions of interference by door gasket, food etc.
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.
TROUBLESHOOTING 4-2-9. If Panel PCB does not work normally ① When lighting of Panel PCB is disabled or only some LED Lamp are disabled Be careful to repair because display of this model is installed in the MICOM of internal PCB. It is recommended to replace PCB MAIN after checking except specified solder touch.
TROUBLESHOOTING 4-2-10. 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.
TROUBLESHOOTING 4-2-11. When refrigerator ROOM Lamp does not light up 1. When you replace the lamp of freezer, please power OFF to avoid an electric shock. 2. Please keep in mind you could get burnt by the excessive heating of an incandescent light bulb. 3. Bimetal is installed in the refrigerator LAMP. Check that if LAMP may be turned OFF by bimetal. 1) AC LAMP ※ We only explaine about Fresh Food compartment in this page. Because it is possible to repair the other room lamps with the same method.
TROUBLESHOOTING 1) LED LAMP When controlling the regrigerator light with Regulator(12V) : LED LAMP → Applying only to the FF compartment. * If the Vegetable Lamp does not work properly, check the FF compartment LED Lamp because it is connected with the FF compartment LED Lamp in parallel. Refer to the circuit diagram to repair.
TROUBLESHOOTING 4-2-12. 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.
TROUBLESHOOTING 4-2-13. If 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. Start ☞ Checking method of Valve resistance (Must power off for checking) Resistance can be changed by input voltage.
TROUBLESHOOTING 4-2-14. If Cubed or Crushed Ice is not supplied Freezer door shall be closed during operation.
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. Motor will rotate continuously when the Motor Switch is not sensed. Start ☞ Checking Mehod of Cover Ice Route Motor Resistance (Make sure to work after Power Off) The Resistance is variable according to the input voltage.
TROUBLESHOOTING 4-2-16. If Photosynthetic LED Lamp does not work properly Sears model Option * Please check the Power prior to repair, even though DC power does not cause electric shock. This lamp operates related to COMP operation, please check the COMP first. Start Photosynthesis LED Lamp is always on when the COMP operates.
TROUBLESHOOTING 4-2-17. If Inverter PCB Power is not supplied Caution At the INVERTER PCB Power, AC 110V/220V power and over DC 300V of high-voltage are applied. Please take care of yourself when repair and measure. - See the operations and reference in this manual when check the MAIN PCB.
TROUBLESHOOTING 4-2-18. If compressor does not operate Start Did 5 mins pass after Compressor Off? No Yes Refer to test function in the manual Does compressor work with manual operation? Yes No Did buzzer of manual operation sound? (Check certainly after manual operation) No Is freezer sensor normal? No 0~800Hz 50% Duty Signal output Check after 5 minutes Yes Is CN79 PIN #4 High?(2.
TROUBLESHOOTING 4-2-19. 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. Blinking time is 1 second and dwell time is 2 seconds.
TROUBLESHOOTING SPM Internal DIODE Voltage 94
TROUBLESHOOTING INVERTER CONTROLLER BOARD Connector Location 1. Inrush Current protecting area : It prevents an instant inrush of current generated in condenser when plug in. 2. PCB Power Source : Power source (HYBRID IC). It supplied DC15V and 5V to MICOM. 3. Location sensing resistance area : It senses motor location through the current detected. 4. Current sensing area : It senses the current from the SHUNT resistance and controls PWM DUTY. 5.
TROUBLESHOOTING INVERTER PCB Circuit Diagram 96
TROUBLESHOOTING 4-3-1. INRUSH CURRENT Protecting Circuit 1) The Power Thermistor prevents an instant inrush of current generated in condenser(C1) when plug in, and Relay(K1) operates 0.1 second after plug in and the power is supplied by relay afterward. 2) The Fuse 1 is designed as 5A to prevent over current applied to Compressor, and Fuse 2 is designed as 1A to protect SMPS area and power in secondary part.
TROUBLESHOOTING 4-3-2. Power Source (HYBRID IC) 1) The power supplied by Noise-Filter is rectified through COMP OLP and the voltage of 300V/DC, rectified through DIODE, is applied in parallel to the SPM and SMPS area, a compressor operating driver. 2) The power source is the circuit which reduces 300V/DC to each 12V/DC and 15V/DC by Hybrid IC, and supplied to operate the MICOM for controlling COMP, and SPM.
TROUBLESHOOTING 4-3-3. Location Sensing Resistance Area 1) The circuit makes an AD conversion from MICOM for about 3.3V that divides the Motor Back EMF voltage (DC300V) by 3 of 300K resistance and 10K resistance.
TROUBLESHOOTING 4-3-4. Sensing Current Area 1) It is the circuit which senses the current from the SHUNT resistance and controls PWM DUTY and the converted value as voltage (about 0.5V) is applied to the MICOM PIN #18.
TROUBLESHOOTING 4-3-5. Comp Operating Signal Area 1) It is the circuit which receives COMP operating signal (200HZ ~ 400HZ) from Main PCB and controls the RPM of the Inverter Comp.
TROUBLESHOOTING 4-3-6. BOOTSTRAP Charging Area 1) It is the charging circuit that 1GBT of SPM can On/Off securely. This circuit stores the power voltage to operate High-Side Power Switch of SPM and is constituted as 3 Capacitors and charges the capacitors by turning the Low-Side Power Switch "On" just before starting the motor for a certain period of time (1000ms).
5.
PCB DIAGRAM 5-1) PCB Layout with part position 1. DC13V, 5V, GND supplied from SMPS PCB 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. (F,R,C,ICE) 4. EEPROM : Save and record every kinds of data. 5. Transmit inputted signals from every sensor into MICOM after eliminate the noise. 6. Micom : control the regrigerator Ceramic resonator : generate the basic frequency of Micom operation.
PCB DIAGRAM 5-2) PCB Layout with part position (SMPS Board) 1. Inrush current protecting area : It prevents an instant inrush of current generated in condenser when plug in. 2. PCB Power Bus : power bus (Hybrid IC). It supplies DC15V and 5V to MICOM. 3. Location detecting resistance area : It detects motor location through the current detected. 4. Current detecting area : It detects the current from the SHUNT resistance and controls PWM DUTY. 5.
PCB DIAGRAM 5-3) Connector Layout with part position (Main Board) 5-3-1.
PCB DIAGRAM 5-4) Connector Layout with part position (SMPS Board) 5-4-1.
7.
6.
6.
6.
7. SCHEMATIC DIAGRAM 7-1) Whole block diagram 7-1-1.
7. SCHEMATIC DIAGRAM 7-1) Whole block diagram 7-1-2.
7. SCHEMATIC DIAGRAM 7-1) Whole block diagram 7-1-3.
7. SCHEMATIC DIAGRAM 7-1) Whole block diagram 7-1-4.
AC POWER INPUT 116 INRUSH CURRENT SENSING CIRCUIT BOOTSTRAP OLP INVERTER COMP OPTION LOCATION DETECTOR LOCATION DETECTION MODE MICOM OSCILLATOR INVERTER MODEL OPTION RESET CIRCUIT INVERTER PCB ERROR Mode Control Normal Mode Control SPM HVIC Charge Circuit FAULT SENSING CIRCUIT OVER CURRENT, VOLTAGE SENSING CIRCUIT DC LINK PART POWER PART COMP CONTROL COMP SIGNAL PART AC115V MICOM Internal Signal DC Signal DC Power AC Signal 7. SCHEMATIC DIAGRAM 7-1) Whole block diagram 7-1-5.
SCHEMATIC DIAGRAM 7-2) CIRCUIT DIAGRAM 7-2-1.
SCHEMATIC DIAGRAM 7-2) CIRCUIT DIAGRAM 7-2-2.
MEMO
272, Oseon-Dong, Gwangsan-Gu, Gwangju-City, Korea, 506-253 TEL : 82-62-950-6193, 6896 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 or domestic law. © Samsung Electronics Co., Ltd.
