Samsung RFG298HD Service Manual
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Samsung RFG298HD Service Manual

Bottom mount freezer
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REFRIGERATOR
For the latest parts information, Please access to our service web site
(  •NorthAmerica:http://service.samsungportal.com)
REFRIGERATOR
BOTTOM MOUNT FREEZER
MOdEl NAME : RFG298Hd*
RFG297Hd*
RFG296Hd*
RFG29PHd*
RFG29THd*
CONTENTS
1. PRECAUTIONS(SAFETy WARNINGS) ········4
2. PROdUCT SPECIFICATIONS ·····················8
3. dISASSEMBly ANd REASSEMBly ·········25
4. TROUBlESHOOTING ································48
5. PCB dIAGRAM ···········································94
6. WIRING dIAGRAM ·····································99
7. SCHEMATIC dIAGRAM ···························100

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Summary of Contents for Samsung RFG298HD

  • Page 1 REFRIGERATOR BOTTOM MOUNT FREEZER MOdEl NAME : RFG298Hd* RFG297Hd* RFG296Hd* RFG29PHd* RFG29THd* REFRIGERATOR CONTENTS 1. PRECAUTIONS(SAFETy WARNINGS) ········4 2. PROdUCT SPECIFICATIONS ·····················8 3. dISASSEMBly ANd REASSEMBly ·········25 4. TROUBlESHOOTING ································48 5. PCB dIAGRAM ···········································94 6. WIRING dIAGRAM ·····································99 7. SCHEMATIC dIAGRAM ···························100 For the latest parts information, Please access to our service web site (  •NorthAmerica:http://service.samsungportal.com)

  • Page 2: Important Safety Notice

    WARNING IMPORTANT SAFETy NOTICE Theserviceguideisforservicemenwithadequatebackgroundsof electrical,electronic,andmechanicalexperience. Anyattempttorepairamajorappliancemayresultinpersonalinjury andpropertydamage. Themanufacturerordealercannotberesponsibleforthe interpretationofthisinformation. SAMSUNG ELECTRONICS AMERICA, INC. Technical Service Guide Copyright ©2011 Allrightsreserved.Thisserviceguidemaynotbereproducedinwholeorinpartin anyformwithoutwrittenpermissionfromtheSAMSUNGELECTRONICSCompany.

  • Page 3: Table Of Contents

    Contents 1.Precautions(SafetyWarnings) ········································································································································ 4 2.ProductSpecifications ·················································································································································· 8 2-1)Introductionofmainfunction ································································································································· 9 2-2)Specifications······················································································································································ 11 2-3)InteriorViews ····················································································································································· 12 2-4)ModelSpecification ············································································································································· 13 2-5)DimensionsofRefrigerator(Inches) ····················································································································· 16 2-6)OptionalMaterialSpecification ···························································································································· 17 2-7)RefrigerantRouteinRefrigerationcycle ··············································································································· 18 2-8)CoolingAirCirculation ········································································································································· 24 3.DisassemblyandReassembly ····································································································································· 25 3-1)PRECAUTION ····················································································································································· 26 3-2)RefrigeratorDoor ················································································································································ 27 3-3)DoorHandleFreezer ··········································································································································· 29 3-4)RefrigeratorLight ················································································································································...
  • Page 4 Contents 4-2-7.IfPowerisnotsupplied ···························································································································· 79 4-2-9.Whenalarmsoundscontinuouslywithoutstop(relatedwithbuzzersound) ··············································· 80 4-2-10.WhenthePanelPCBdoesnotoperatenormally ···················································································· 82 4-2-11.IfPantryPanelPCBisnotworkingnormally ··························································································· 83 4-2-12.WhenrefrigeratorROOMLampdoesnotlightup ··················································································· 84 4-2-13.IfICEWaterisnotsupplied ···················································································································· 85 4-2-14.IfCubedorCrushedIceisnotsupplied·································································································· 87 4-2-15.IfCoverIceRouteMotor(GearedMotor)isnotworkingnormally ···························································· 88 4-2-16.IfInverterPCBPowerisnotsupplied ····································································································· 89 4-2-17.LEDblinkingfrequencydependingonprotectingfunctions····································································· 90 Spminternaldiodevoltage ········································································································································· 91 Invertercontrollerboardconnectorlocation ················································································································ 92 Inverterpcbcircuitdiagram ········································································································································ 93 5.PCBDIAGRAM ··························································································································································· 94 5-1)PCBLayoutwithpartposition ····························································································································...

  • Page 5: Precautions(SafetyWarnings)

    1. PRECAUTIONS(SAFETy WARNINGS) Unplugtheappliancebeforethechangingorrepairingtheelectricparts. ● Becarefultheelectricshock. ⇢ Whenexchangingtheparts,usethecorrectparts. ● Checkthemodelname,ratingvoltage,ratingcurrent,running ⇢ temperaturesymbols. Whentroubleshooting,connectfirmlythetypesofharness. ● Makenottobeseparatedwhensomepowerisimposed. ⇢ Checkthetracesofwaterinfiltrationattheelectricparts. ● Ifthereisatraceofwaterinfiltration,exchangeortapetheparts. ⇢ Checktheassemblestatusofpartsaftertroubleshooting. ● Itmustbeinthesameassembledstatewhencomparedwiththestatebefore ⇢ disassembly. Checktheusecircumstanceofrefrigerator. ● Iftherefrigeratorisinstalledattheplacethatisdamporwet,orstatusof ⇢ installationisunstable,changetheinstallationplace. Groundtherefrigeratorproperly ● Particularly,Besuretoearthwhenthereisariskofanelectricleakageby ⇢ humidityorwetness. Donotusemultiplugsinaplugsocketatthesametime. ●  C heckifthepowercordandsocketisdamaged,pressed,squeezed,orfired. Iftheplugorplugsocketisdamaged,repairorexchangeit ●...
  • 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 regrigerator prior to repair. CAUTION/WARNING SyMBOlS dISPlAyEd SyMBOlS means "Prohibited". Indicatesthata dangerofdeath Warning means "Do not disassemble".
  • Page 7 PRECAUTIONS(SAFETy WARNINGS) ❈ Please let users know following warnings & cautions in detail. Warning & Caution do not allow users to store do not allow users to store narrow do not allow users to put bottles or and lengthy bottles or foods in a pharmaceutical products, scientific kinds of glass in the freezer.
  • Page 8 PRECAUTIONS(SAFETy WARNINGS) FlOORING Forproperinstallation,thisrefrigeratormustbe placedonalevelsurfaceofhardmaterialthatis thesameheightastherestoftheflooring.This surfaceshouldbestrongenoughtosupportafully loadedrefrigerator,orapproximately 660lbs(299kg). MOVING Protectthefinishoftheflooring.Cutalarge sectionofthecardboardcartonandplace undertherefrigeratorwhereyouareworking. Whenmoving,besuretopulltheunitstraight outandpushbackinstraight.

  • Page 9: ProductSpecifications

    2. PROdUCT SPECIFICATIONS 2-1)INTRODUCTIONOFMAINFUNCTION ······································································································· 9 2-2)SPECIFICATIONS ····································································································································· 11 2-3)INTERIORVIEWS ···································································································································· 12 2-4)MODELSPECIFICATION ·························································································································· 13 2-5)DIMENSIONSOFREFRIGERATOR(INCHES) ··························································································· 16 2-6)OPTIONALMATERIALSPECIFICATION ··································································································· 17 2-7)REFRIGERANTROUTEINREFRIGERATIONCyCLE ··············································································· 18 2-8)COOLINGAIRCIRCULATION ·················································································································· 24...

  • Page 10: 2-1)IntroductionOfMainFunction

    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 • U niformcoolingforeachshelfandevenincornerinfresh foodcompartmentbycenterpositionedfanandductwith multiplefloweffluences. Twin Cooling System • Therefrigeratorandthefreezerhavetwoevaporators. Giventhisindependentsystem,thefreezerandthe refrigeratorarecooledindividuallyasrequiredandare, therefore,moreefficient. Foododorfromtherefrigeratordoesnotaffectfoodinthe freezerduetoseparateairflowcirculation.
  • Page 11 PROdUCT SPECIFICATIONS Easy Handle • T hefreezerdoorismoreuser-friendly. So,itcomesasmuchconvenient. Slim Water Filtration System • S limwaterfilterisplacedbetweencrispersfor changingfilterconvenientlywithoutremoving itemsfromRefrigerator. dual Ice Maker •9cubesice-Maker(Refrigerator) •7cubesice-Maker(Freezer) FORRFG298HD*/RFG296HD*/RFG29THD*...

  • Page 12: 2-2)Specifications

    PROdUCT SPECIFICATIONS 2-2) Specifications ElECTRICAl SPECIFICATIONS Refrigerator DefrostControl  From12to30hrs(comp.runti m e) ThermoBimetal  Protector140°F(60°C)(off)104°F(40°C)(on) Defrost Thermistor(502AT)                 50°F(10°C)(off) Electrical Rating           AC115V 60Hz  11.6 Amps (Air inlet) (Air inlet) (Air inlet)

  • Page 13: 2-3)InteriorViews

    Vertical Hinged Section Door Bins Quick-Space Glass Shelf (FOR RFG29PHD* / RFG29THD*) Vegetable & Fruit Drawers WATER FILTER Cool Select Pantry Light FZ Ice-Maker Light (FOR RFG298HD* / RFG296HD*/RFG29THD*) Pull Out Drawer Tilting Pocket Ice Bucket Freezer Freezer Drawer Bin...

  • Page 14: 2-4)ModelSpecification

    PROdUCT SPECIFICATIONS 2-4) Model Specification &Specification Chart RFG298HD*** RFG297HD*** RFG296HD*** RFG29PHD*** RFG29THD*** ITEM Model ICE&WATER ICE&WATER ICE&WATER ICE&WATER ICE&WATER DISPENSERWITH DISPENSERWITH DISPENSERWITH DISPENSERWITH DISPENSERWITH PANTRy&TWINICE PANTRy TWINICE PANTRy PANTRy&TWINICE 356/8Inch(908mm) 356/8Inch(908mm) 356/8Inch(908mm) 356/8Inch(908mm) 356/8Inch(908mm) OnCabinet 291/4Inch(744mm) 291/4Inch(744mm) 291/4Inch(744mm) 291/4Inch(744mm) 291/4Inch(744mm)
  • Page 15 RFG298HD*/RFG297HD*/RFG296HD*/RFG29PHD*/RFG29THD* MKV190CL2B/E01 AC125V,6A AC125V,6A...
  • Page 16 RFG298HD*/RFG297HD*/RFG296HD*/RFG29PHD*/RFG29THD* AC120V,240W AC120V,120W AC120V,2.5W DC12V,45~75mA DC12V,290~380mA DC12V,95~145mA...

  • Page 17: 2-5)Dimensions Of Refrigerator (Inches)

    PROdUCT SPECIFICATIONS 2-5)dimensions of Refrigerator (Inches)

  • Page 18: 2-6)OptionalMaterialSpecification

    PROdUCT SPECIFICATIONS 2-6) Optional Material Specification PartName PartCode AMOUNT FILTER DA29-00020B WATER-ASSy ASSy- DA99-00240S PACKINGSUB LEDLAMPREF DA96-00398J LEDLAMP DA47-00519S CASE-VEGR,L LEDLAMPFRE DA41-00519X...

  • Page 19: 2-7)RefrigerantRouteInRefrigerationCycle

    PROdUCT SPECIFICATIONS 2-7) Refrigerant Route in Refrigeration cycle Compressor → Condenser→HotPipe→BackClusterPipe→Dryer→CapillaryTube →RefrigeratorEvaporator→FreezerEvaporator→SuctionPipe→Compressor...
  • Page 20 PROdUCT SPECIFICATIONS 2-7-1. PRINCIPlE OF FREEZEER...
  • Page 21 PROdUCT SPECIFICATIONS 2-7-2. Operation theory of refrigeration cycle components ■Condenser 1)Role: A devicewhichradiatesheattotheoutside(water/air)tomakeliquidstateforthehigh temperature/highpressuregasrefrigerantdischargedfromcompressor 2)Types A.Air-coolingType:Condenseairbycirculatingnaturallyormanually. 1)NaturalConvectionType: U sedforthehouseholdrefrigeratorwhichhassmallcondensing capacity. 2)ManualConvectionType:CirculateairmanuallybyFAN-Motor(Largecapacity) B. W ater-coolingType:Makecoolingwaterpassthroughthepipeinthecondenser (Largecapacity) ※Location ① C LUSTERheat-radiatingtype:AllPipeseffectiveforradiatingheatareformedintheright/ left,andfrontsideofrefrigeratorwithhardurethanesandradiateheatthroughthewhole surfacesofcabinettoambientair. ②Installthecondenserontheoutsideoftheproduct.(Anoldmodel) ③Makethemclusteratthelowerpartofproductandradiateheatmanuallybyfan. ※ R adiatecondensedpotentialheatuptoliquefycompletelyandmakechangethestatewithout changingthegastemperatureitself. ※Pipethickness ①Lowpressure:6.3mm②Highpressure:4.7mm③Capillary:About0.4-0.8mm ※Condenserlength(Basedon300ℓ):26.5M ①Assistance:5M②HOT-PIPE:6.6M③CLUSTER-PIPE:4.17M ■Capillary 1.   R ole:Adevicewhichmakeslowtemperatureandpressurerefrigerantbyreducingthepressure...
  • Page 22 PROdUCT SPECIFICATIONS 2-7-3. Operation theory of refrigeration cycle components ■Evaporator 1. R ole:Asthelowpressureliquidrefrigerantflowedfromcapillaryabsorbsheatinsideofthe refrigerator,itbecomeslowpressuregasandrefrigeratethefoods. 2. T heory:Thelowpressurerefrigerantflowedtoevaporatoroperatescoolingwhichtakes ambientevaporatedpotentialheatwithmaintainingtheevaporationuptoevaporate completely. 3.TypesofEvaporator A.ROLL-BONDEvaporator⇢DirectCoolingONE-DOORType ☞Rolledandadherethe2aluminumplateandthenmakerefrigerantpassage. B.PIN-PIPEType⇢IndirectcoolingTWO-DOORType ☞asmallaluminumplateonthealuminumpipetoincreasethecoolingeffect. ■Compressor 1. R ole:Itoperatessameaspumpwhichpulloutthesubterraneanwater.Itinhalesthelow temperatureandpressurerefrigerantgas(flowedout)fromevaporatorandmakehigh temperatureandpressurerefrigerantliquidinthecompressorandsendittothecondenser. 2.TypeofCondenser a. B ack-and-forthmotiontype:Amethodthatpistolmakesback-and-forthmotionthrough shaftandcylinderofmotorrotationandcompresses.※ U sedforhouseholdrefrigerant b. R otaryType:Amethodthatinhalestherefrigerantgasthroughthegapbetweentheoutside ofrotorelectricattachedontheshaftandtheinsideofcylinderandcompresses.
  • Page 23 PROdUCT SPECIFICATIONS 2-7-4. Operation theory of refrigeration cycle components ※ .Influenceofmoisture ① Moistureprecipitation-Blockedbyice ②Refrigerantandreaction ③Lifereductionofoil ④Accelerationofoxidization ⑤Copperplatingphenomenon ⑥Gasdissolutionbytheinteractionofsyntheticinsulatingmaterial(insulator) ※.Influenceofforeignsubstance ①Increaseofcondensedtemperature. ②Increaseoftemperature. ③Decreaseofcoolingefficiency ④Shortenthelifebyfrictionbetweenoilandforeignsubstanceinthecompressor. ■Accumulator 1. R ole:Tosendapurerefrigerantgastocompressorbyremovingcompletelytherefrigerantliquid fromevaporator. ※ Ifarefrigerantliquidgointothecompressor,overloadisoccurred.
  • Page 24 PROdUCT SPECIFICATIONS 2-7-5. Refrigeration Cycle Type TdM Cycle Compressor Condenser FreHotPipe FlexHot-pipe RefHot-pipe BackClusterPipe Dryer CapillaryTube RefrigeratorEvaporator FreezerEvaporator SuctionPipe Compressor HM Cycle Compressor Sub-Condenser HotPipe Dryer CapillaryTube RefrigeratorEvaporator FreezerEvaporator SuctionPipe Compressor...

  • Page 25: 2-8)CoolingAirCirculation

    PROdUCT SPECIFICATIONS 2-8) Cooling Air Circulation Refrigerator Freezer...

  • Page 26: DisassemblyAndReassembly

    3. dISASSEMBly ANd REASSEMBly 3-1)PRECAUTION ············································································································· 26 3-2)REFRIGERATORDOOR ······························································································ 27 3-3)DOORHANDLEFREEzER ·························································································· 29 3-4)REFRIGERATORLIGHT ······························································································· 30 3-5)COVER-DISPLAy&WATER-DISPENSER ···································································· 30 3-6)WATER-DISPENSER ··································································································· 31 3-7)GLASSSHELF ············································································································ 32 3-8)FOLDABLEGLASSSHELF ·························································································· 32 3-9)VEGETABLE&FRUITDRAWERSSHELF ···································································· 33 3-10)COOLSELECTPANTRy ··························································································· 34 3-11)MOTORDAMPER ····································································································· 34 3-12)WATERFILTER ········································································································· 35 3-13)WATERFILTER(ASSEMBLy&DISASSEMBLy) ·························································...

  • Page 27: 3-1)Precaution

    dISASSEMBly ANd REASSEMBly 3-1) PRECAUTION •Unplugtherefrigeratorbeforecleaningandmakingrepairs. •Donotdissembleorrepairtherefrigeratorbyyourself. -Itmaycauseriskofcausingafire,malfunctionand/orpersonalinjury. •Removeanyforeignmatterordustfromthepowerplugpins. -Otherwisethereisariskoffire. • D onotuseacordthatshowscracksorabrasiondamagealongitslengthorateitherend. • D onotplugseveralappliancesintothesamemultiplepowerboard.Therefrigeratorshouldalwaysbepluggedinto itsownindividualelectricalwhichhasavoltageratingthatmatchedtheratingplate. - T hisprovidesthebestperformanceandalsopreventsoverloadinghousewiringcircuits,whichcouldcauseafire hazardfromoverheatedwires. • D onotinstalltherefrigeratorinadampplaceorplacewhereitmaycomeincontactwithwater. -Deterioratedinsulationofelectricalpartsmaycauseanelectricshockorfire. •Therefrigeratormustbegrounded. - y oumustgroundtherefrigeratortopreventanypowerleakagesorelectricshockscausedbycurrentleakagefrom therefrigerator. •Donotputbottlesorglasscontainersinthefreezer. -Whenthecontentsfreeze,theglassmaybreakandcausepersonalinjury. •Donotstorevolatileorflammablesubstancesintherefrigerator. - T hestorageofbenzene,thinner,alcohol,ether,LPgasandothersuchproductsmaycauseexplosions. - Required Tools IMAGE ITEM Useforassemblingand PhillipsHeadDriver...

  • Page 28: 3-2)RefrigeratorDoor

    dISASSEMBly ANd REASSEMBly 3-2) Refrigerator door Part Name How To do descriptive Picture 1. O penthedoortobereplaced, disassembleCapTopTable(1) with(-)driver,andclosethedoor. Becarefulnottoscratchor breaktheparts CAUTION 2. R emovethescrewholdingdown theCoverHingeandCoverHinge Separatebyholdingthehandle andliftingupward. Refrigerator door 3. D isconnecttheLEDhousing(2)and Electricalhousingconnector3) locatedabovetheupperdoorhinge. Todisconnecttheconnectormore easily,presstheendofthehookand pullconnector. Beforedoingtheabove,make surethattheunitispluggedout. CAUTION...
  • Page 29 dISASSEMBly ANd REASSEMBly Part Name How To do descriptive Picture 4-1.   l eft door hinge WithaPhilipsheadscrewdriver, removethegroundscrew.(4) 4-2. R ight door hinge Atfirst,disconnecttheLED housing(2)andWithaPhilips headscrewdriver,removethe groundscrews.(4) Refrigerator door 5.  L iftthedoorstraightlyupto remove. 6. W ithaPhilipsheadscrewdriver, remove the two screws (⑩) ⑫...

  • Page 30: 3-3)DoorHandleFreezer

    dISASSEMBly ANd REASSEMBly 3-3) door Handle Freezer Part Name How To do descriptive Picture 1. S etHANDLEtoFIXERHANDLE. 2. I nsertHANDLEtoFIXER HANDLE. door Handle Freezer 3. I nsertbolttoFIXERHANDLE usingrangeandlock.

  • Page 31: 3-4)RefrigeratorLight

    dISASSEMBly ANd REASSEMBly 3-4) Refrigerator light Part Name How To do descriptive Picture 1. R emovethelampcoverby pushingaflat-bladescrewdriver Intothehooksbehindandpull themout. Becarefulnottoscratchor breaktheparts CAUTION Refrigerator Beforedoingtheabove,make surethattheunitispluggedout. light CAUTION 2. R emovethescrews. AndseparatetheLEDpanel. 3-5) Cover-display & Water-dispenser Part Name How To do descriptive Picture 1. R emoveascrewunderthe displaycover.

  • Page 32: 3-6)Water-Dispenser

    dISASSEMBly ANd REASSEMBly 3-6) Water-dispenser Part Name How To do descriptive Picture 1.  D isengagetheHousing Connectorsbypushinga Glat-bladescrewdriver. 2.  R emove2screwsoftheCase Water-dispenser IceRouteAssy. 3.PulltheCaseIceRouteAssy.

  • Page 33: 3-7)GlassShelf

    dISASSEMBly ANd REASSEMBly Part Name How To do descriptive Picture 1.   A ssemblyshallbeinorderfrom thedisassembly.Case-Iceand Routeshallbeassembledinside ofhose.Otherwise,assemble cannotbeaccomplished. Water-dispenser 2.   W henassemblingCover-Display, firstinsertitfromleftsideand thenassembletorightside. Otherwise,thehookcanbe broken. 3-7) Glass Shelf Part Name How To do descriptive Picture Removetheshelfbyliftingthefront partoftheshelfupandpullingit Glass Shelf out.

  • Page 34: 3-9)Vegetable&FruitDrawersShelf

    dISASSEMBly ANd REASSEMBly 3-9) Vegetable & Fruit drawers Shelf Part Name How To do descriptive Picture 1. R emovethevegetable&fruit drawerbypullingtherollerpart andliftingitup. 2.  L iftupthevegetable&fruitshelf slightlywiththebothsideof Vegetable & Fruit snap-fitsarepressed. drawers Shelf (Refertothepicture) 3. R emovethevegetable&fruit drawershelfbypullingitout. (Refertothepicture) Part Name How To do descriptive Picture 1. R emove1screw...

  • Page 35: 3-10)CoolSelectPantry

    dISASSEMBly ANd REASSEMBly 3-10) Cool Select Pantry Part Name How To do descriptive Picture 1. R emovethecoolselectpantryby Cool Select Pantry pullingtherollerpartandliftingit 1. R emovethecoolselectpantry Cool Select Pantry coverbyliftingthecentralpartof thecoverwhilepushingittothe Cover left. 1. R emovethecoolselectpantry Cool Select Pantry shelfbyliftingthefrontpartofthe Shelf shelfwhilepullingit. 3-11) Motor damper Part Name How To do...

  • Page 36: 3-12)WaterFilter

    dISASSEMBly ANd REASSEMBly 3-12) Case Water Filter Part Name How To do descriptive Picture BeforedisassemblingtheCase WaterFiltertakeoutwater filteranddrawersandshelves locatesontheCaseWaterFilter. (Refertothe"Vegetable&Fruit Shelf") 1. a .Disconnectthe3Housing(1) b. T ubeFitting SeparateWaterTubewhile pressing(2). Case Water Filter 2.a. P ulltheWaterbluehoseout. b. P ushtheTubeFitting(3)and pulltheWaterGRAyhoseout. 3.Pushthebyhandslightly.

  • Page 37: 3-13)WaterFilter(Assembly&Disassembly)

    dISASSEMBly ANd REASSEMBly 3-13) Water Filter (Assembly & disassembly) Part Name How To do descriptive Picture 1. T urnthewaterfilter count-clockwise. (Refertothepicture) 2. R emovethewaterfilterby pullingit. (Refertothepicture) Water Filter 3.Pushthewaterfilterdirectly. 4. T urnthewaterfilterclockwise untilitlocked. Besuretoflushthedispenserthoroughly(approx.6to7minutes),otherwisewatermaydrip fromthedispenser.Thismeansthatthereisstillairintheline. CAUTION...

  • Page 38: 3-14)GallonDoorBin

    dISASSEMBly ANd REASSEMBly 3-14) Gallon door Bin Part Name How To do descriptive Picture 1. R emovethegallondoorbinby liftingitup. Gallon door Bin (Refertothepicture) 3-15) Vertical Hinged Section Part Name How To do descriptive Picture 1.Unscrew2screws. 2. D isengagetheinternalhousing Vertical Hinged connectoroftheverticalhinge. Section 3. R emovetheverticalhinged sectionbyliftingthevertical...

  • Page 39: 3-16)EvaporatorCoverInRefrigerator

    dISASSEMBly ANd REASSEMBly 3-16) Evaporator Cover In Refrigerator Part Name How To do descriptive Picture 1. R emovetheanglecapwitha flat-bladescrewdriver. (Refertothepicture) 2.Unscrew4screws. 3. R emovethethelowerpartof anglemidbypullingitoutand Evaporator Cover pushingitdown. In Refrigerator (Refertothepicture) 4. R emovethehookbypullingit fromthelowerpartandpushing thecoverdown. (Refertothepicture) 5. D isconnectthe3housing connectors. (Refertothepicture)

  • Page 40: 3-17)EvaporatorInRefrigerator

    dISASSEMBly ANd REASSEMBly 3-17) Evaporator In Refrigerator Part Name How To do descriptive Picture 1. D isconnectthe3housing connectorspartonleftside. (Refertothepicture) 2. D isconnectthehousing Evaporator connectorsonrightside. In Refrigerator (Refertothepicture) 3. R emovetheevaporatorbylifting thebottomsideofitupand pullinfitout. (Refertothepicture)

  • Page 41: 3-18)FreezerDoor

    dISASSEMBly ANd REASSEMBly 3-18) Freezer door Part Name How To do descriptive Picture 1. P ullthedraweropentofull extension. 2. R emovethetiltingPocket(①)by ② pullingthebothbrackets(②) ① upwardatthesametime. Freezer door 3. T akeottheAutopulloutdrawer (②)andFreezerguard(③)3by liftingupfromrailsystem. 4. U nscrew2bolts. (1bolteachonthebothsides) 5. L iftingupthefreezerdoor, removethefreezerdoorfromthe rail.

  • Page 42: 3-20)PullOutDrawer

    dISASSEMBly ANd REASSEMBly 3-19) Pull Out drawer Part Name How To do descriptive Picture 1. S lidethedrawerinasmuchas possible. door Handle 2.Liftthedrawerup. Freezer 3. R emovethepulloutdrawerby liftingthebottompartofdrawer binandpullingitout.

  • Page 43: 3-21)Ice-Maker

    dISASSEMBly ANd REASSEMBly 3-20) Ice-Maker Part Name How To do descriptive Picture lever 1. P ulltheleverforwardandtake outtheicebucket. 2. R emove1screwoftheCover. 3. D isassemblethecoverwitha Ice Maker flat-blade(-)screwdriverandpull itout. 4. D isengagethe2housing connectors. 5. P ushthehookandpulltheIce- Makerout. 6. T odisassemble,pushthetab andpulltheCase-Augerandthe motorout.

  • Page 44: 3-22)FreezerLight

    dISASSEMBly ANd REASSEMBly 3-21) Freezer light Part Name How To do descriptive Picture 1. R emovethecoverFreezer lamp(②)liketheway disassemblingtheFlexzone lamp. Freezer light 2.Disengagethehousing. 3-22) door Switch In Freezer Part Name How To do descriptive Picture 1. R emovethefreezerdrawerbin byusingaflat-blade(-) screwdriver.(Refertothepicture) door Switch In Freezer 2. D isconnectthehousing connectorpart.

  • Page 45: 3-24)EvaporatorCoverInFreezer

    dISASSEMBly ANd REASSEMBly 3-23) Evaporator Cover In Freezer Part Name How To do descriptive Picture 1. R emovethefreezerdoorand freezerdrawerbypullingoutthe drawerandthenunscrewing2 screws. Evaporator Cover In 2. L iftuptheevaporatorcover. Freezer 3. D isengagethe3housing connectorsandremovethe evaporatorcover. 3-24) Evaporator In Freezer Part Name How To do descriptive Picture 1. R emovethehousingcoverby pushingbothlateralsidesof...

  • Page 46: 3-26)MachineCompartment

    dISASSEMBly ANd REASSEMBly 3-25) Machine Compartment Part Name How To do descriptive Picture 1. U nscrew3screwsofcover compressor. 2. D isengagethehousing connector. (Refertothepicture) 3. R emovethehookerofsupport circuitmotorbyliftingthehooker upandpullingitout. 4. R emovethescrewwithaflat- Motor Fan bladescrewdriver. (Refertothepicture) 5. R emovethemotorfanbypulling thefanoutwhilegrapingthe motorpart. (Refertothepicture) 6. U nscrew2screwsfixedinthe motor.
  • Page 47 dISASSEMBly ANd REASSEMBly Part Name How To do descriptive Picture 1. D isengagethehousing connector. Relay O/l 2.RemoveCoverRelay. 3. R emovetherelayO/Lwitha flat-bladescrewdriver. (Refertothepicture)

  • Page 48: 3-27)ElectricBox

    dISASSEMBly ANd REASSEMBly 3-26) Electric Box Part Name How To do descriptive Picture 1. R emovethegroundscrew8 attachedtotheupperleftand rightdoorhingeswithaphillps screwdriver(+) 2. D isengageallhousing connectorsfromthemainPCB. 3. R emovethemainPCBby PBA Main pushingthelowerpartofthe hookdown. 4.Unscrew2PCBfixingscrews. 5. R emovethemainPCBbylifting theupperpartofthehookup. (Refertothepicture) 1. R emovetheSMCSPCBbylifting PBA SMPS theupperpartofthehookup.

  • Page 49: Troubleshooting

    4. TROUBlESHOOTING 4-1)FUNCTIONFORFAILUREDIAGNOSIS ····················································································································49 4-1-1.TESTMODE(MANUALOPERATION/MANUALDEFROSTFUNCTION) ···················································49 4-1-2.DISPLAyFUNCTIONOFCOMMUNICATIONERROR ···················································································50 4-1-3.SELF-DIAGNOSTICFUNCTION ·······················································································································51 4-1-4.DISPLAyFUNCTIONOFLOADCONDITION ··································································································54 4-1-5.EXHIBITIONMODESETTINGFUNCTION ·······································································································55 4-1-6.OPTIONSETTINGFUNCTION ··························································································································56 4-1-7.OPTIONTABLE ···················································································································································58 4-2)DIAGNOSTICMETHODACCORDINGTOTHETROUBLESyMPTOM(FLOWCHART)····································60 4-2-1.IFTHETROUBLEISDETECTEDBySELF-DIAGNOSIS ···············································································62 4-2-2.IFFANDOESNOTOPERATE ···························································································································73 4-2-3.IFICEROOMFANDOESNOTOPERATE ······································································································74 4-2-4.IFICEMAKER(R)DOESNOTOPERATE ·········································································································75 4-2-5.ICEMAKER(Fz)DOESNOTOPERATE(OPTION,RFG298/296) ···································································76 4-2-6.IFDEFROSTDOESNOTOPERATE(F,RDEFHEATER) ·················································································77 4-2-7.IFPOWERISNOTSUPPLIED ···························································································································78 4-2-7.IFPOWERISNOTSUPPLIED ···························································································································79 4-2-9.WHENALARMSOUNDSCONTINUOUSLyWITHOUTSTOP(RELATEDWITHBUzzERSOUND) ·········80 4-2-10.WHENTHEPANELPCBDOESNOTOPERATENORMALLy ····································································82 4-2-11.IFPANTRyPANELPCBISNOTWORKINGNORMALLy ···········································································83 4-2-12.WHENREFRIGERATORROOMLAMPDOESNOTLIGHTUP ··································································84 4-2-13.IFICEWATERISNOTSUPPLIED···················································································································85 4-2-14.IFCUBEDORCRUSHEDICEISNOTSUPPLIED ························································································87...

  • Page 50: 4-1)FunctionForFailureDiagnosis

    TROUBlESHOOTING 4-1) Function for failure diagnosis 4-1-1.Testmode(manualoperation/manualdefrostfunction) • IfEnergySaverKey+FridgeKeyonthefrontofpanelarepressedsimultaneouslyfor8seconds,itwillbe changedtothetestmodeandalldisplaysonthefrontofpanelwillbeoff. • Ifanykeyonthefrontofpanelispressedwithin15secondsafterthetestmode,itwillbeoperatedasbelow sequence: manualoperation(Freezercompartment1)⇀manualoperation(Freezercompartment2)⇀ manual operation(Freezercompartment3)⇀manualdefrostoffreshfoodandfreezercompartments(Fd)⇀ Cancel(Displayalloff). • Ifanykeyonthefrontofpanelisnotpressedwithin15secondsafterthetestmode,thetestmodewillbe canceledanditwillbereturnedtopreviousmode. • Ifthetestmodeiscanceled,Recommendthepoweroffandreactivatetherefrigerator. 1)Manualoperationfunction ①IfEnergySaverKey+FridgeKeyarepressedsimultaneouslyfor 8seconds,(displaysarealloff) Itwillbechangedtothetestmode(manualoperation)bypressinganykey 1-1) I fanykeyispressedonceintestmode,blinks"FF-1"onthedisplayanditindicatestherefrigeratorhas enteredthemanualoperation.Atthismoment,buzzerbeepsasanalarm. 1-2) I fanykeyispressedonceatthemanualoperation1status,FF-2willbedisplayed. Andifanykeyispressedonemoretime,FF-3willbedisplayed.FF-2andFF-3meansmanualoperation2 and3separately.These3functionsoperatewithdifferentRPMofCOMP. 1-3) I fmanualoperationisselected,compressorwillrunatoncewithout7minutesdelayinanymode.Ifthe refrigeratorisonthedefrostcycleatthemoment,defrostwillbefinishedandmanualoperationwillbegin. ( B ecarefulifmanualoperationgetstartedatthemomentofcompressoroff,overloadcouldbeoccurred.) Compulsionworking1:3600RPM Compulsionworking:3600RPM 1-4) I fmanualoperationworks,compressor&f-fanoperatecontinuouslyfor24hoursandfreshfood...

  • Page 51: DisplayFunctionOfCommunicationError

    TROUBlESHOOTING 2)Simultaneousmanualdefrost(freshfoodandfreezercompartments)function 2-1) I fanykeyispressedonemoretimeduringmanualoperation(freshfoodcompartment),"Fd"showsinthe displayandthenmanualoperationwillbecanceledatonceandfreshfoodandfreezercompartmentwill bedefrosted. 2-2) A tthismoment,alarmbeepsfor3seconds(0.1secON/1secOFF)duringmanualdefrostfunctionof freshfoodandfreezercompartment. 3)Testcancelmode 3-1) D uringthesimultaneousdefrostingoffreshfoodandfreezercompartmentssimultaneously,ifthedisplay panelchangetothetestmodeandtestbuttonispressedonemoretime,defrostingoffreshfoodand freezercompartmentswillbecanceledatthesametimeandwillreturntothenormaloperation.Or,alltest functionswillbecanceledbyturningmainpowerOFFandON. 4-1-2.DisplayfunctionofCommunicationerror 1)DisplayfunctionwhenPanel⇀MAINMICOMcommunicationhaserror 1-1) I fthereisnoanswerfor10secondsafterthepanelmicomreceivedtherequirementofcommunication, "Pc-Er"displayonthepanelPCBwillbeON/OFFalternatelyuntilthecommunicationerroriscanceled. (0.5secALLON,0.5secALLOFFalternately) 1-2) “ Pc-E”displayonthePantryRoomDisplaywillbeON/OFFalternatelyuntilthecommunicationerroris canceled.(0.5secALLON,1.5secALLOFFalternately) 2)DisplayfunctionwhenPanel⇀MAINMICOMOPTIONhaserror 2-1) ” OP-Er”codeisrepeatedlyON/OFFuntilOptionerrorsettlesdown.

  • Page 52: Self-DiagnosticFunction

    TROUBlESHOOTING 4-1-3.Self-diagnosticfunction 1)Self-diagnosticfunctionintheInitialpowerON 1-1) M icomoperatesself-diagnosticfunctiontocheckthetemperaturesensorconditionwithin1secondwhen therefrigeratorturnedOninitially. 1-2) I fbadsensorisdetectedbytheself-diagnosticfunction,theapplicabledisplayLEDwillblinkfor0.5sec. Atthismoment,thereisnobeepsound.(Refertoself-diagnosticCHECKLIST) 1-3) S elf-diagnosticbuttonisrecognizedonlywhentheerrorisdisplayedbythebadsensor.Displaydoesnot operatenormallybuttemperaturecontrolwillbecontrolledbytheemergencyoperation. 1-4) W hentheerrorisdetectedbyself-diagnosis,theerrorcanbecanceledautomaticallyifalltroubled sensorsarecorrectedorSelf-diagnosticfunctionkey(EnergySaverKey+LightingKey)arepressed simultaneouslyfor8seconds. (Returntonormaldisplaymode) ①IfEnergySaverKey+LightingKeyarepressedsimultaneously for8seconds,theerrormodebyself-diagnosiswillbecanceled. 2)Self-diagnosticfunctionduringnormaloperation ②IfEnergySaverKey+LightingKeyarepressedsimultaneously for8seconds,theerrormodebyself-diagnosiswillbecanceled. 2-1) I fEnergySaverKey+LightingKeyarepressedsimultaneouslyfor6secondsduringnormaloperation,the temperaturesettingdisplaywilloperatefor2seconds(ON/OFF0.5seceach). IfEnergySaverKey+LightingKeyarepressedsimultaneouslyfor8seconds(includingabove2seconds), self-diagnosticfunctionwillbeselected. 2-2) A tthismoment,self-diagnosticfunctionwillbereturnedwithbuzzersound'ding-dong'. Ifthereisanerror,displayoferrorwillbeoperatedfor30secondsandthenreturntonormalcondition whetherproblemiscorrectedornot. (Refertoself-diagnosisCHECKLIST) 2-3)Inputbybuttonisnotacceptedduringself-diagnosticfunction.
  • Page 53 TROUBlESHOOTING ※ RSelf-diagnosticschecklist Trouble contents Diagnostic method Item The voltage of MAIN PCB CN30- “3”↔ FZ-Sensor Error N76-”1”: shall be between 4.5V~1.0V The voltage of MAIN PCB CN30- “6”↔ FF-Sensor Error N76-”1”: shall be between 4.5V~1.0V Display error : separation of sensor housing part, contact error, The voltage of MAIN PCB CN30- “5”↔...
  • Page 54 TROUBlESHOOTING ※ RSelf-diagnosticschecklist Trouble contents Diagnostic method Item After separating MAIN PCB CN70 Separation of fresh food compartment defrost heater housing part, contact wire from PCB, resistance value error, disconnection, short circuit or between CN70 White ↔ CN70 Gray temperature fuse error. Display error : shall be 120(440) ohm±7%.

  • Page 55: DisplayFunctionOfLoadCondition

    TROUBlESHOOTING 4-1-4.DisplayfunctionofLoadcondition ① I fEnergySaverKey+Lightingkeyarepressedsimultaneouslyfor6seconds,ALLON/OFFwillblink with0.5intervalfor2seconds. ② I ftakethefingerofffromabovekeysandpressFridge,loadconditionmodewillbestarted. 1) I fPowerEnergySaverKey+Lightingkeyarepressedsimultaneouslyfor6secondsduringnormal operation,thetemperaturesettingdisplayoffreshfoodandfreezercompartmentswillblinkALLON/OFF with0.5for2seconds. 2) A tthismoment,IfFridgeKeyafterEnergySaverKey+LightingKeyispressed,loadconditiondisplaymode willbereturnedwithalarm.AtLEDallonstate,onlyloadconditiondisplaywillblinkON/OFFwith0.5 secondsinterval. 3) L oadconditiondisplaymodeshowstheloadthatmicomsignalisoutputting. However,Itmeansthatmicomsignalisoutputting,itdoesnotmeanwhetherloadisoperatingornot.That istosaythatthoughloadoperationisdisplayed,loadcouldnotbeoperatedbyactualloaderrororPCB relayerroretc.(ThisfunctionwouldbeappliedatA/S.) 4) L oadconditiondisplayfunctionwillmaintainfor30secondsandthennormalconditionwillbereturned automatically. 5)Loadconditiondisplayisasbelow. F-10 R-10...

  • Page 56: ExhibitionModeSettingFunction

    TROUBlESHOOTING ※ RLoadmodeChecklist DisplayLED Displaycontents Operationcontents R-1-ⓐ R-FANHigh WhenFFcompartmentFANoperateswithhighspeed,applicableLEDON R-1-ⓑ R-FANLow WhenFFcompartmentFANoperateswithlowspeed,applicableLEDON R-1-ⓒ R-DEFHeater WhenFFcompartmentdefrostheateroperates,LEDON R-1-ⓓ StartMode Whenrefrigeratorispluggedinitially,LEDON R-1-ⓔ Overloadcondition Whenambienttemperatureismorethan93℉(34°C),LEDON R-1-ⓕ Lowtemperaturecondition Whenambienttemperatureislessthan72℉(22°C),LEDON F-1-ⓔ,ⓕALLLEDOff NormalCondition Whenambienttemperatureisbetween73℉(23°C)and91℉(33°C) R1-ⓖ ExhibitionMode LEDONatthedisplaymode. F-1-ⓐ COMP. WhenCOMPoperates,applicableLEDON. F-1-ⓑ F-FANHigh WhenFzcompartmentFANoperateswithhighspeed,applicableLEDON. F-1-ⓒ F-FANLow WhenFzcompartmentFANoperateswithlowspeed,applicableLEDON. F-1-ⓓ F-DEFHeater WhenFzcompartmentdefrostheateroperates,LEDON F-10-ⓔ...

  • Page 57: OptionSettingFunction

    TROUBlESHOOTING 4-1-6.Optionsettingfunction • I fFreezerKey+lightingKeyarepressedsimultaneouslyfor12secondsduringnormaloperation,freshfood andfreezercompartmentstemperaturedisplaywillbechangedtooptionsettingmode. KEyoperationmethodforchangingtooptionmode ① I fFreezerKey+lightingKeyarepressedsimultaneouslyfor12seconds,optionsettingmodewillbe started. KEycontrolmethodafterconvertingtooptionmode ※ RKeycontrolinoptionmode EnergySaverKey CodeDownkey FreezerKey CodeUpkey Lightingkey ReferenceValuedownkey Fridgekey ReferenceValueUpkey • I fthedisplaychangestooptionsettingmode,alldisplayswillbeoffexceptfreezerandfridgecompartments temperaturedisplayasbelow. (Freshfoodandfreezercompartmentscasewillbeexplainedonlybecausealloptionsareoperatedwiththe samemethodaccordingtotheoptiontable.)
  • Page 58 TROUBlESHOOTING Code Reference Value 1) F orexample,ifyouwanttochangefreezercompartmentstandardtemperatureto-4℉(-2°C)byoperating option,doasbelow.Thisfunctionisforchangingthestandardtemperature. In-2℉(-19°C)ofcurrenttemperatureoffreezercompartment,ifyoumakethetemperaturelowerto-4℉ (-2°C)bytheoption,thestandardtemperaturewouldbecontrolled-6℉(-21°C) Therefore,ifyouchangethesettingoftemperatureoptionto-2℉(-19°C)onthepanel,theappliancewillbe operatedwith-6℉(-21°C).Itmeansthatstandardtemperatureiscontrolled-4℉(-2°C)lessthansetting temperatureinthedisplay. Basically,allthedatainoptionhasclearedfromthefactory. Therefore,almostallsettingvalueare"0". But,somesettingvaluescouldbechangedforthepurposeofimprovingperformmance. Code Reference Value NOTE youneedtochecktheproductmanualand/orspecification. 2) A fterchangingtotheoptionmode,freshfoodcompartment"0",freezercompartment"0"willbedisplayed. (Basicallyfreshfoodcompartment"0",freezer"0"wouldbesetatshippingprocess,butsettingvaluecould bechangedforthepurposeofimprovingproductatmassproducingprocess.) - I ffreshfoodcompartment"0"showsonly,temperaturereferencevalueoffreezercompartmentwillbeset andcurrentfreezercompartmenttemperaturecodewillbedisplayedonthefreezertemperaturedisplay. Code Reference Value 3) I ffreezercompartment"4"issetasbelowfreezercompartmentcodeafterfreshfoodcompartment"0isset, standardtemperatureoffreezercompartmentwillbelowerthan-4℉(-2.0°C). (Refertothepicture"changingthefreezercompartmenttemperature") Code Reference Value Code Reference Value : I fyouwaitfor20secondsaftercompletingthesetting,MICOMwillsavethesettingvaluetotheEEPROM...

  • Page 59: OptionTable

    TROUBlESHOOTING 4-1-7.OptionTABLE 1)Temperaturechangingtableoffreezercompartment Setitem FreezerTempShift MODEL RFG29***** FridgeRoom7-SEG Reference Value Settingvalue Code Reference Value Temp. compensation compartment Code 0℉(0.0℃) -1℉(-0.5℃) -2℉(-1.0℃) -3℉(-1.5℃) -4℉(-2.0℃) -5℉(-2.5℃) -6℉(-3.0℃) -7℉(-3.5℃) Code Reference Value +1℉(+0.5℃) +2℉(+1.0℃) ex) I fyouwanttochangethefreezerstandardtemperatureto +3℉(+1.5℃) -4℉(-2°C) +4℉(+2.0℃) +5℉(+2.5℃) +6℉(+3.0℃) +7℉(+3.5℃) +8℉(+4.0℃) 2)Temperaturechangingtableoffreshfoodcompartment Setitem...
  • Page 60 TROUBlESHOOTING Code Reference Value Code Reference Value 3)TemperaturechangingtableofICEROOMcompartment. Setitem ICEROOMTempshift MODEL RFG29***** FridgeRoom7-SEG Reference Value Settingvalue Code Reference Value Temp. compensation compartment Code ex) I fyouwanttochangethe Code Reference Value 8.6℉(-13℃) freezercompartment 6.8℉(-14℃) standardtemperatureto 5℉(-15℃) 10.4℉(-12℃). 3.2℉(-16℃) 1.4℉(-17℃) -0.4℉(-18℃) -2.2℉(-19℃) 10.4℉(-12℃) Code Reference Value Code...

  • Page 61: 4-2)DiagnosticMethodAccordingToTheTroubleSymptom(FlowChart)

    TROUBlESHOOTING 4-2) diagnostic method according to the trouble symptom(Flow Chart) DATA1.Temperaturetable ResistancevalueandMICOMportvoltageofsensoraccordingtothetemperature SENSORCHIP: b ased on PX41C, PX41C, 502AT/ 103**(ICE MAKER SENSOR(MOLD)/FULL UP, 20Kohm (Actualmeasurement=valueofthetablebelowX2) Voltage Resi s tance Voltage Resi s tance Voltage Resi s tance ℃ ℉ ℃ ℉...
  • Page 62 TROUBlESHOOTING 4-2) diagnostic method according to the trouble symptom(Flow Chart) DATA2.HumiditySensortable -Voltageoutputtable@23°…,5Vdc---HTG3515CH/HTG3535CH RH(Temperaturecompensate)=RH(RelativeHumidity)+(Temp(°C)°©23°C)x0.05 Voltage Resi s tance Voltage Resi s tance Voltage Resi s tance ℃ ℉ ℃ ℉ ℃ ℉ 2246 1839 3452 2827 2272 1861 3478 2848 2298 1882 3504 2870...

  • Page 63: IfTheTroubleIsDetectedBySelf-Diagnosis

    TROUBlESHOOTING 4-2-1.Ifthetroubleisdetectedbyself-diagnosis - T heerrorofsensorwillbedisplayedonthefrontofdisplay. whentheerrorofsensorisdetectedatinitialpowerON,theappliancewillnotoperatedanddisplayof abnormalsensorpartwillblink. - T heappliancewillnotstopoperatingwhentheerrorofsensorisdetectedduringoperationofthe appliance. Butnormalfreezingmightbenotoperatediftheapplianceisoperatedbytheemergencyoperation mode.youwouldbettertochecktheapplianceaccordingtotheself-diagnosisofthemanual. 1)IfICEMaker(R)Sensorhastroubled ERRORCode Start IsMAINPCBConnector DATA1. CN90insertedcorrectly? Temperature table Badcontactofconnector/insertcorrectly ** M easuringpointofresistancevalueaccordingto Sensor** IsICEMakerSensor ICEMAKER:CN90”1”↔ “7”measuringresistance unitnormal? value**0Ω:Shorttrouble/Ω∞:Opentrouble Refertocircuitdiagraminthemanual Replacethetemperaturesensor SensorMICOM/Connectornumber NO(0.6V>Measurement<4.6V) Isthevoltagebetween ConnectorCN90-"1"(Brown)and MAINPCBConnectorCN90-"1"(Brown)and Maker J23JUMMPERPCBtypicalGround J23JUMMPERnormal? Voltagemeasuredbetween4.6V~0.6V.
  • Page 64 TROUBlESHOOTING 2)ICEMaker(Fz)Sensorhastroubled(OPTION,RFG298/296) ERRORCode - ThisrefrigeratorhasDualIceMaker,so controlledtwoIceMakers. Start IsMAINPCB DATA1. ConnectorCN90inserted Temperature table correctly? Badcontactofconnector/insertcorrectly ** M easuringpointofresistancevalueaccordingtoSensor**  I CEMAKER(Fz):CN909↔8measuring IsICEMaker(Fz) resistance value sensorunitnormal? **0Ω:Shorttrouble/Ω∞:Opentrouble Refertocircuitdiagraminthemanual ReplacetheICEMaker SensorMICOM/Connectornumber Isthevoltagebetween NO(0.6V>Measurement<4.6V) ConnectorCN90-"9"(Red)andJ23 MAINPCBConnectorCN90-"9"(Red) JUMMPERPCBcommonGround Maker(F) andJ23JUMMPERnormal? Voltagemeasuredbetween4.6V~0.6V. CheckthecontactofPCB&WireTerminal correctly. MeasuringvoltageofIC01MICOM#75, Isinputvoltageof CN90-"9"(Red)andJ23JUMMPERPCBtypicalGround IC01MICOM#75normal? partaresimilar.
  • Page 65 TROUBlESHOOTING 3)IfRSensorhastrouble ERRORCode Start IsMAINPCB DATA1. ConnectorCN30andCN76inserted Temperature table correctly? Badcontactofconnector/insertcorrectly ** M easuringpointofresistancevalueaccordingto Sensor** IsRSensor R: C N30-“6”↔ CN76-"1"measuringresistancevalue unitnormal? **0Ω:Shorttrouble/Ω∞:Opentrouble Replacethetemperaturesensor Refertocircuitdiagraminthemanual NO(0.6V>Measurement<4.6V) Isthevoltagebetween SensorMICOM/Connectornumber MAINPCBConnectorCN30-“6”(White)and J23JUMMPERnormal? ConnectorCN30-“6”(White)to J23JUMMPERPCBtypicalGround Recheckthewireconnectionpart Voltagemeasuredbetween4.6V~0.6V. Istheinputvoltageof MeasuringvoltageIC01MICOM#84, IC01MICOM#84normal? CN30-“6”(White)andJ23JUMMPER fromPCBtypicalGroundpartaresimilar. Checktheiced-solder,solderbridging, →  C heckthemeasureonthevoltageofResistance, R311duetotheSMDMICOM disturbedsolder.
  • Page 66 TROUBlESHOOTING 4)IfRDEFSensorhastrouble ERRORCode Start Start IsMAINPCB DATA1. ConnectorCN30andCN76inserted Temperature table correctly? Badcontactofconnector/insertcorrectly ** M easuringpointofresistancevalueaccordingto Sensor** R-DEF:CN30-"8"↔ CN76-"1"measuring IsRDEFSensor resistance value unitnormal? **0Ω:ShorttroubleΩ∞:Opentrouble Refertocircuitdiagraminthemanual Replacethetemperaturesensor SensorMICOM/ConnectorNumber NO(0.6V>Measurement<4.6V) Istheinputvoltagebetween ConnectorCN30-"8"(Sky-blue)and MAINPCBConnectorCN30-”8”(Skyblue) RDEF J23JUMMPERPCBtypicalGround andJ23JUMMPERnormal? Voltagemeasuredbetween4.6V~0.6V. Recheckthewireconnectionpart MeasuringvoltageofIC01MICOM#86 IstheinputvoltageofIC01 CN30-"8"(Sky-blue)andJ23JUMMPERfrom MICOM#86normal? PCBtypicalGroundpartaresimilar. →...
  • Page 67 TROUBlESHOOTING 5)IfAmbientSensorhastrouble ERRORCode Start Start DATA1. MAINPCBConnectorCN78inserted Temperature table correctly? Badcontactofconnector/insertcorrectly ** M easuringpointofresistancevalueaccordingto Sensor** Ambient:CN78-”8”↔“12”measuringresistancevalue **Placedintherighttoptableofupperhinge. AmbientSensorunit **0Ω:Shorttrouble/Ω∞:Opentrouble normal? Refertocircuitdiagraminthemanual Replacethetemperaturesensor SensorMICOM/Connectornumber NO(0.6V>Measurement<4.6V) Isthevoltagebetween Ambient ConnectorCN78-"8"(yellow)to MAINPCBConnectorCN78”8”(yellow) J23JUMMPERPCBtypicalGround andJ23JUMMPERnormal? Voltagemeasuredbetween4.6V~0.6V. Recheckthewiringconnection Isthe MeasuringvoltageofIC01MICOM#93 inputvoltageofIC01MICOM#93 CN78-"8"(yellow)andJ23JUMMPERfrom normal? PCBtypicalGroundpartaresimilar. →  C heckthemeasureonthevoltageofResistance, Checktheiced-solder,solder R315duetotheSMDMICOM bridging,disturbedsolder...
  • Page 68 TROUBlESHOOTING 6)IfFSensorhastrouble ERRORCode Start Start AreMAINPCB DATA1. ConnectorCN30andCN76 Temperature table insertedcorrectly? Badcontactofconnector/insertcorrectly ** M easuringpointofresistancevalueaccordingto Sensor** F:CN30-”4”↔CN76-”1”measuringresistancevalue FSensorunitnormal? **0Ω:Shorttrouble/Ω∞:Opentrouble Refertocircuitdiagraminthemanual Replacetemperaturesensor SensorMICOM/Connectornumber NO(0.6V>Measurement<4.6V) Isthevoltagebetween ConnectorCN30-”4”(Red)to MAINPCBConnectorCN30-”4”(Red)and J23JUMMPERPCBtypicalGround J23JUMMPERnormal? Voltagemeasuredbetween4.6V~0.6V. Recheckthewiringconnection MeasuringvoltageofIC01MICOM#82, Istheinputvoltageof CN30-”4”(Red)andJ23JUMMPERfrom IC01MICOM#82normal? PCBtypicalGroundpartaresimilar. →  C heckthemeasureonthevoltageofResistance, Checktheiced-solder,solder R309duetotheSMDMICOM bridging,disturbedsolder NotroublewithPCBandtemperaturesensor...
  • Page 69 TROUBlESHOOTING 7)IfFDEFSensorhastrouble ERRORCode Start Start Are DATA1. MAINPCBConnectorCN30andCN76 Temperature table insertcorrectly? Badcontactofconnector/insertcorrectly ** M easuringpointofresistancevalueaccordingto Sensor** F-DEF: C CN30-”5”↔CN76-”1”measuringresistance FzDEFSensorunit value normal? **0Ω:Shorttrouble/Ω∞:Opentrouble Refertocircuitdiagraminthemanual Replacetemperaturesensor SensorMICOM/Connectornumber NO(0.6V>Measurement<4.6V) Isthevoltagebetween FDEF ConnectorCN30-"5"(Orange)to MAINPCBConnectorCN30-”5”(Orange)and J23JUMMPERPCBtypicalGround J23JUMMPERnormal? Voltagemeasuredbetween4.6V~0.6V. Recheckthewiringconnection MeasuringvoltageofIC01MICOM#83, Istheinputvoltageof CN30-"5"(Orange)andJ23JUMMPERfrom IC01MICOM#83normal? PCBtypicalGroundpartaresimilar. →...
  • Page 70 TROUBlESHOOTING 8)IfIceRoomSensorhastrouble ERRORCode Start Start IsMAINPCB DATA1. ConnectorCN78andCN76inserted Temperature table correctly? Badcontactofconnector/insertcorrectly ** M easuringpointofresistancevalueaccordingto Sensor** Ambient:CN78”10”↔CN76-”1”Measurethevoltage Iceroomsensorunit ofResistancevalue normal? **0Ω:Shorttrouble/Ω∞:Opentrouble Refertothecircuitdiagraminthismanual Replacetemperaturesensor SensorMICOM/Connectornumber NO(0.6V>Measurement<4.6V) Isthevoltagebetween IceRoom ConnectorCN78-"10"(Orange)and MAINPCBConnectorCN78-"10"(Orange)and J23JUMMPERfromPCBTypicalGround J23JUMMPERnormal? Voltagemeasuredbetween4.6V~0.6V. Checkthewiringconnection MeasuringvoltageofIC01MICOM#92, Istheinputvoltageof CN78-"10"(Orange)andJ23JUMMPERfrom IC01MICOM#92normal? PCBTypicalGroundaresimilar. → C heckthemeasureonthevoltageofResistance, Checktheiced-solder,solder R316duetotheSMDMICOM bridging,disturbedsolder...
  • Page 71 TROUBlESHOOTING 9)IfPANTRySensorhastrouble ERRORCode Start Start IsMAINPCB DATA1. ConnectorCN30andCN76insert Temperature table correctly? Badcontactofconnector/insertcorrectly ** M easuringpointofresistancevalueaccordingtoSensor IsPantrySensor Flex:CN30”9”↔CN76”1”measuringresistancevalue normal? **0Ω:Shorttrouble/Ω∞:Opentrouble Refertocircuitdiagraminthemanual Replacetemperaturesensor SensorMICOM/Connectornumber NO(0.6V>Measurement<4.6V) Isthevoltagebetween Pantry ConnectorCN30-"9"(yellow)to MAINPCBConnectorCN30-"9"(yellow) J23JUMMPERPCBtypicalGround andJ23JUMMPERnormal? Voltagemeasuredbetween4.6V~0.6V. Recheckthewiringconnection MeasuringvoltageofIC01MICOM#87, IstheinputvoltageofIC01 CN30-"9"(yellow)andJ23JUMMPER MICOMPin#87normal? fromPCBtypicalGroundpartaresimilar. → C heckthemeasureonthevoltageofResistance,R314 Checktheiced-solder,solder duetotheSMDMICOM bridging,disturbedsolder NotroublewithPCBandtemperaturesensor.
  • Page 72 TROUBlESHOOTING 10)IfHumiditySensorhastrouble ERRORCode Start Start IsMAINPCB ConnectorCN30inserted correctly? ** M easuringpointofresistancevalueaccordingto Badcontactofconnector/insertcorrectly Sensor" Humidity:CN30”1”↔ ”3” IsHumiditySensor Resistancevaluewithopened:about50Ω unitnormal? **0Ω:Shorttrouble/Ω∞:Opentrouble ReplacetheHumiditySensor Refertocircuitdiagraminthemanual DATA2.HumiditySensorTable SensorMICOM/Connectornumber Isthevoltagebetween NO(1.0V>Measurement<3.5V) Humidity ConnectorCN30-"3"(brown)to MAINPCBConnectorCN30-”3”(Brown)and J23JUMMPERPCBtypicalGround J23JUMMPERnormal? Voltagemeasuredbetween3.5V~1.0V RecheckthePCB&Wi r eTermi n al  connecti o n MeasuringvoltageofICO1MICOM#81, Isinputvoltageof CN30-"3"(Brown)andJ23JUMMPERfrom...
  • Page 73 TROUBlESHOOTING 11)PANTRyRoomDamperHeaterhastrouble(OPTION) ERRORCode Start Start IsDamperHeater normal?(about135ohm) Badcontactofconnector/insertcorrectly MeasurethevoltageofResistance IsMAINPCBconnector between ① - ② after (CN77)insertedcorrectly? CN77connectoropen/1350ohm±7% 1) Wire connector Initial Working 2) Replace Heater powerOn Heateroff MICOM heater Istheinputvoltageof IC01MICOM#56normal? 3.5V~ 3.5V~ condition 4.8V 4.8V 1)Recheckthewire 2)ReplacePCBMAIN Normal(recheck) ☞CheckingmethodofFlexzoneRoomDamper resistanceCN77-"1"(Black)↔"2"(Brown)  * *Ω∞:Open(wiredisconnection,heater disconnection)trouble/0Ω:Shorttrouble...

  • Page 74: IfFanDoesNotOperate

    TROUBlESHOOTING 4-2-2.IfFANdoesnotoperate -TherefrigeratorofthismodelhasBLDCFANmotor.BLDCmotorisdrivenbyDC7~12V. - O nthenormalconditionofCOMPON,itoperatestogetherwithF-FANmotor. Ifdoorisopenedandclosedonceatahighambienttemperature,itwillbeoperatedafter1minute delay. Therefore,youareadvisednottotakenitforanerror. -.Ifthereisatrouble,youshouldselecttheself-diagnosticfunctiontocheckthetroublebeforepoweroff. Start IsCOMPRESSORON? Executemanual operation IsthevoltagebetweenMAIN IsthevoltagebetweenMAIN IsthevoltagebetweenMAIN PCBGroundJ23JUMMPERandCN76 PCBGroundJ23JUMMPERandCN PCBGroundJ23JUMMPERandCN ”3”(yellow)aroundDC7~12V? 76”5”(Sky-blue)aroundDC7~12V? 76”4”(Orange)aroundDC7~12V? FANworknormally IsthevoltagebetweenMAIN IsthevoltagebetweenMAIN Istheexternaltemperature PCBGroundJ23JUMMPERandCN76- PCBGroundJ23JUMPERandCN above66.2℉(19℃)? "11"(White)around4.5~5V? 76-"12"(Purple)around0V? Repairtheconnection ofDoorswitch Door&MICOMState Recheckafter7minutes (Timecouldbedelayed FMICOM RMICOM(#28) dependingonthe Door (#29) temperatures.Ifthe...

  • Page 75: IfIceRoomFanDoesNotOperate

    TROUBlESHOOTING 4-2-3.IfICERoomFandoesnotoperate -ThisrefrigeratorhasBLDCFANmotor.BLDCmotorisdrivenbyDC7~12V. -WhenCOMPON,normallyoperateswithF-FANmotor. - Ifthereisanytrouble,youshouldselecttheself-diagnosticfunctiontocheckthetroublebeforepoweroff. - W henpressingtheICETESTS/Wforacertainperiodoftime(over Start 1.5sec),thefunctionisaccomplished.AfterbeginningofTEST mode,Icemakerheaterturnsonforinitial2minutes,iftheice makingtemperatureisbelow0℃. -Ifitexceeds0℃,Icemakerheaterturnsonforinitial30seconds. - A fterIcemakerheaterturnsonfor30seconds,itturnsoffand IsCOMPRESSORON? thenIcemakermotorturnson. - A stheIcemakermotorturnson,TESTMODECOUNToperates. Executemanualoperation (6minutescount) Condition -Ambienttemperature:32℃/75% Isthevoltagebetween - N otch:2℉/38℉(-19.0℃/3.3℃) MAINPCBGroundJ23JUMMPER Initialfulloficebucketcapacity:794g,58ea andCN76-”2”(Black)around DC7~12V? FANworksnormally IceRoomcontroltemperature IstheIce Roomtemperaturesuitablefor IceON 8.6℉(-13 ℃...

  • Page 76: IfIceMaker(R)DoesNotOperate

    TROUBlESHOOTING 4-2-4.IfIceMaker(R)doesnotoperate 1. W aterisautomaticallysuppliedtotheIceMakerdependingontemperature&timeconditionandIceMaker Dispensescubedorcrushedice. 2. P owerisappliedtotheoneendofwires.Becarefulwhendisassemblingandshallrefertoitsexplodeddiagramin anycase. 3. I ceMakeroperationshallbecheckedafterpressingtheIceMakertestingswitch. (FridgeIceMaker)Itisnotpossibletocheckwhenthepowerisdisengaged. 4. W erecommendthatTWOPEOPLEcheckthePCBandIceMakerbecausetheyarelocatedatfrontandrearside each. 5.Becareful!TheIceMakerHeatercancausepersonalinjurylikeburn. OperatingConditionwhenmotorrotates DisplaysERRORCode OperatingStatusofMicom(IC01) Ready Operation HeaterLoad(#106) Start MotorCCWLoad(#107) MotorCWLoad(#118) Heateroperatesdifferentlyaccordingtothe DoesIce conditions.TestModeoperationwillbe30sec. MICOM(IC02)OperationStatus Makerrotatewhenpressing Operation Ready theIceMakertestingswitch (over1.5sec)? (TestSwitch) 1)ReplacetheIceMakerKit 2) C heck/ReplacetheMainPCB inputsignal MICOM(IC01)OperationStatus (MicomIC01Pin#72-“0V”)

  • Page 77: IceMaker(Fz)DoesNotOperate(Option,Rfg298/296)

    TROUBlESHOOTING 4-2-5.ICEMAKER(Fz)doesnotoperate(OPTION,RFG298/296) 1. W aterisautomaticallysuppliedtotheIceMakerdependingontemperature&timeconditionandIce MakerDispensescubedorcrushedice. 2. P owerisappliedtotheoneendofwires.Becarefulwhendisassemblingandshallrefertoitsexploded diagraminanycase. 3.IceMakeroperationshallbecheckedafterpressingtheIceMakertestingswitch. (FreezerIceMaker)Itisnotpossibletocheckwhenthepowerisdisengaged. 4. W erecommendthatTWOPEOPLEcheckthePCBandIceMakerbecausetheyarelocatedatfront andrearsideeach. ERRORCode Start Isthecheckinglocationby selfsensingwheninitialPowerON? 1)Checkthewiringconnections 2)Check/ReplacetheIceMakerkit. Doesice Micom(IC01)OperationStatus MakerRotatewhenpressingtheIceMaker Ready Operation testingswitch? (TestSwitch) 1)Check/ReplacetheIceMakerkit. Micom(IC01)OperationStatus IstheinputvoltageofIC01 MICOM#78normal? Before Ready Rotation Returning Ready Compl e te 1)Checkthewiringconnections 2)Check/ReplacetheIceMakerkit.

  • Page 78: IfDefrostDoesNotOperate(F,RDefHeater)

    TROUBlESHOOTING 4-2-6.Ifdefrostdoesnotoperate(F,RDEFHeater) RDEFERROR FDEFERROR Start **Measuringpointofresistancevalueaccordingtoheater** F-DEF: C N70“3”(Brown)↔ CN70”7”(Gray)measuring Arethealldeforst resistance value(63 ohm ±7%) R-DEF: C N70”1”(White)↔ CN70“7”(Gray)measuringresistance heaternormal? value(120 ohm ±7%) Checkthebimetal,heater **0Ω:Shorttrouble/Ω∞:Open(bimetal,heater)trouble disconnection,wiringconnectionetc. Refertoself-diagnostic Isdefrostsensorby function in the manual Referencetothemanual“Self-Diagnostic” self-diagnosticnormal? Replacethe applicable sensor **Measuringpointofresistancevalueaccordingtosensor** Isthetemperatureof F-DEF:CCN30-”5”↔ CN76-”1”measuringresistancevalue defrostsensorlower R-DEF:CN30-”8”↔CN76-”1”measuringresistancevalue than53.6℉(12°C)?

  • Page 79: IfPowerIsNotSupplied

    TROUBlESHOOTING 4-2-7.IfPowerisnotsupplied - R efertothefunctionand Caution reference parts in the manual AtthepowerofmainPCB,theAC115V whenchecktheMAINPCB powerandahigh-voltageoverDC170V Start areoccurred.Pleasetakecareofyourself duringrepairandmeasurement. Istheplugconnectedin? Connectplugagain, checktheplugloosening Ispower115Vapplied tothebothterminalsofSMPSPCB CN70⑤ -⑦ CheckinSMPSPBA Checktheassemblyandwire connection IsfuseontheSMPS Check i ngmethodofvoltage PCBdown? ☞ CN70-"5"(Red) "7"(Gray)ACvoltage ↔ 1)ReplaceFUSEAC250V2.0A 2)ReplacePCBASS’y IsDC170V appliedtothebothterminals ofBD1+,- 1)CheckPCBPATTERNandreplaceBD1 2)ReplacePCBASS'y...

  • Page 80: IfPowerIsNotSupplied

    TROUBlESHOOTING 4-2-8.Ifcompressordoesnotoperate Start Did7mins passafterCompressor OFF? Checkafter7minutes Doescompressor Refertotestfunction workwithmanual in the manual operation? Didbuzzerofmanualoperationsound? (Checkcertainlyaftermanualoperation) Is freezer sensor normal? 0˜800Hz 50% IsCN75PIN#4 Duty Signal Repair OPEN & High?(2.5V) disconnection output Is the temperature sensor Replace PCB of MAIN PCB normal? Is the wiring between Main and Sub Repair the sensor &...

  • Page 81: WhenAlarmSoundsContinuouslyWithoutStop(RelatedWithBuzzerSound)

    TROUBlESHOOTING 4-2-9.Whenalarmsoundscontinuouslywithoutstop(relatedwithbuzzersound) ① If'ding-dong'soundcontinuously Start Doorisajar Isdoorclosed completely? Removecausesaftercomprehending theconditionsofinterferancebydoor gasket,foodetc, Iswaterpenetrated intothedoorswitch? ReplaceDoorS/W Seperatethedoorswitchandcheckifthe Isthedoor measuredvalueofunitischangedfrom0Ω switchunitnormal? to Ω∞ accordingtoswitchON/OFF. *FFDoorSwitchismagneticswitch. ( I tcanbeoperatedwhendoormagnetis combinedwithit.) ReplaceDoorS/W IstheconnectorCN76 insertedcorrectly? Connectorisnotinserted, Repairdisconnectpart Door&MICOMState Istheinput voltageofmain#29,#28,#27 MICOM(#28) MidDrawer changedatdoor-openand Door closestatus? MICOM(#29) MICOM(#27) Rightand Repairwireconnectionand...
  • Page 82 TROUBlESHOOTING ③ Ifbuzzerdoesnotsound BuzzerisinstalledonthepanelPCBinthismodel. Ifbuzzerdoesnotsoundeventhoughthebuttonispressed,manualoperationisstartedanddooris opened,itshouldseparatepanelPCBandcheckthebreakageofbuzzerandbadsoldering. ItisveryhardtorepairthepanelPCBbecauseitconsistsofSMDassemblies. ItisrecommendedtoreplacePCBassemblywhenthefailureassociatedwithpanelisoccurred excepttheminorerrorsuchasswitchpressingerror,surfacepeelingoffandsoon. Start Doesitsound 'dingdong'ifpressabutton onthefrontpanel? MAINPCBnormal,BUzzERnormal Doesitmakeasound ofdooropenalarmwhenyouareopeningthe dooroffreezerorFridgemorethan3 minutes? CheckthepanelPCBwithreference of<howtocheckPanelDisplay> Isthereany damageorbreakageofthebuzzerin thepanelPCB? ReplacePanelPCB Didleadof a component fall on the vibration plateofbuzzer? ReplacePanelPCB Recheckthebuttonpressing forceandmechanicalproblem...

  • Page 83: WhenThePanelPcbDoesNotOperateNormally

    TROUBlESHOOTING 4-2-10.WhenthePanelPCBdoesnotoperatenormally ① WhentheentireoracertainsectionofthePanelPCBdoesnotlightup - T hereisaMICOMembeddedinthePanelPCB.So,takecarewhendoingrepairs.And,excepttheSolder Touch,replacethePCB. Start RefertotheCircuitDiagramof Istheconnetor InsertConnectoragainRepairthecontact thismanualortheWiringDiagram insertionoffreezerupper-hinge trouble nomal? attachedatthebackoftheunit. MAINPCB InsertMAINPCBConnectoragain Connector(CN50)isinserted normally? The Panel InsertConnectoragainRepairthecontact PCBConnecterisconnected trouble properly? When ReplacePanelPCB replacingPanel-PCB, itlightsup? ①  C hecktheDispenserandtheTopCoverHingeConnectors.   ChecktheWireCutandtheWireShort. ② CheckthewireconnectionbetweentheFridgeTop   CabinetandtheMainPCBConnector.

  • Page 84: IfPantryPanelPcbIsNotWorkingNormally

    TROUBlESHOOTING 4-2-11. IfPantryPanelPCBisnotworkingnormally youshouldcheckthedisplayafterdooropeningbecausethedisplayofthismodeloperatesonly whenthefreshfoodcompartmentdoorisopened. Start room DoesR Doorswitch operatenormally? Checkandrepairtheswitch *Referto<howtorepairdoorswitch> Isthe pantryroom connector of insertedcorrectly ReinsertConnector,Repairbadcontact IsMAINPCB Connector(CN51)inserted correctly? ReinsertconnectorinMAINPCB IssignalofMAIN IfPanelKeyisnot PCBCN51normal? selected Checkvoltage/ReplaceMAINPCB Isthelighting operatedwhenreplacePantry Panel-PCB? PanelPCBitselfhastrouble. ①CheckthewiresofPantryRoom-disconnection,shortbetweenwires ②RecheckthecontrolcircuitofMAINPCBPantryPanel ③CheckthewireassemblingbetweenPanelandMAIN ②IfPanelPCBKeyisnotselected ※Ifitisnotrepairedwiththeabovebasiccheckingmethod PCBTypicalGroundJ23JUMMPER TheVoltageofKEyis Workingevery2msec/4min Isakeypressed continuously? ReassemblePCBASS'y/Enforce thecancelationofpressedkeys...

  • Page 85: WhenRefrigeratorRoomLampDoesNotLightUp

    TROUBlESHOOTING 4-2-12.WhenrefrigeratorROOMLampdoesnotlightup WhencontrollingtheregrigeratorlightwithRegulator(12V):LEDLAMP ApplyingtotheF/RRoomcompartment(Option) → * I ftheVegetableLampdoesnotworkproperly,checktheRcompartmentLEDLampbecauseitisconnectedwith theRcompartmentLEDLampinparallel.Refertothecircuitdiagramtorepair. Start Door&MICOMState MICOM(#28) Door RightandLeft Doesthe DOORS/Wsenseproperly? 0V(Low) Close (Open/Close) 5V(High) Open Check/ReplaceREEDS/W, MagnetASS`y MICOMState Istheoutput Door voltageofIC01MICOM#28 (Rightand normal? Left) Close 0V(Low) 5V(High) Replace/RepairthePCB Open 5V(High) 0V(Low) Istheoutput IC76(R)/IC77(F)State voltageofIC76 normal? Micom IC76(R)/IC77(F)...

  • Page 86: IfIceWaterIsNotSupplied

    TROUBlESHOOTING 4-2-13.IfICEWaterisnotsupplied 1.Pleaseshutthewatersupplyingpriortorepair. 2.Powerisappliedtotheoneendofwires.Becarefulwhendisassemblingnottogetanelectricshock. 2)IceWater(R)Valve(OPTION,RFG298/296) PCBTypicalGroundJ23JUMMPER Start Istheconfirming Normal(CheckIce soundofthevalveoperationheardwhen watervalvehose) Icemakertestswitchpushed? ☞ C heckingmethodofvoltageBasedonPCB typicalGroundJ23JUMMPER 1) C heckthevoltageofIC73-"5"(samevoltageas IC01“104”) -ICEWatervalvewaiting(about0V) Checksoldering DoesMainPCBIC01 MICOM#72voltagechange short/ReplacePCB 5V/0V? DoesMainPCBIC01 Checksoldering MICOM#104voltagehave BasedonPCBtypicalGroundJ23JUMMPER short/ReplacePCB high(5V)output? 2)IC73-"14"voltage -ICEWatervalveWaiting(about12V±0.8V) -ICEWatervalveoperating(about0.7V±0.5V) DoesMainPCB Checksoldering IC73-"14"haveabout0.7V short/ReplacePCB output? 3) C heckthevoltageofWaterValveoperating Isthecontact Checksoldering...
  • Page 87 TROUBlESHOOTING 2)IceWater(F)Valve(OPTION,RFG298/296) TypicalPCBGroundJ23JUMMPER Start Istheconfirmingsoundof Normal(CheckIce thevalveoperationheardwhen watervalvehose) Icemaker(Fz)testswitchpushed? ☞ C heckingmethodofvoltageBasedonPCB typicalGroundJ23JUMMPER 1) C heckthevoltageofIC75#7(samevoltage asIC01#116) -ICEWatervalveoperating(about5V±0.5V) Checksoldering DoesMainPCBMICOM short/ReplacePCB #116havehigh(5V)output? BasedonPCBtypicalGroundJ23JUMMPER 2)IC75#12voltage -ICEWatervalveWaiting(about13V±0.8V) DoesMainPCBIC75 Checksoldering -ICEWatervalveoperating(about0.7V±0.5V) #12haveabout0.7V short/ReplacePCB output? Checksoldering Isthecontactpointofmain short/ReplacePCB 3) C heckthevoltageofFridgeIceWater(F) PCBRELAyRy76normal? Valveoperating(ACvoltage) =>ForcheckingtheRelayRy76 CN70-"5"(Red)↔CN72-"1"(Brown) -ICEWatervalvewaiting(aboutAC0V) MAINPCBnormal...

  • Page 88: IfCubedOrCrushedIceIsNotSupplied

    TROUBlESHOOTING 4-2-14.IfCubedorCrushedIceisnotsupplied Fridgedoorshallbe Start closedduringoperation. AreIcesejected? AreIcesintheIcebucket? Is“IceOff”mode ① ChecktheIcemakingswitch selectedonthedisplay ② ChecktheDOORSwitch panel? ③ ChecktheIcemovingmotor ④ CheckthewiringconnectionsofIcemovingmotor ⑤ CheckiftheCOVERICEROUTEopens ⑥  C hecktheq706movementrelatedwithAUGER_ ①  C heckthewaterpipe MOTORsafety Cancelthe“IceOff” :bending/Shutoff ② heckrouteoficechecksolenoid CrushedIce Whichmodeis ③ CheckheIceMakerwiring selected? CubedIce CubedIceejected IsCubedIceejected? IsCrushedIceejected? NormalOperationstatus...

  • Page 89: IfCoverIceRouteMotor(GearedMotor)IsNotWorkingNormally

    TROUBlESHOOTING 4-2-15.IfCoverIceRouteMotor(GearedMotor)isnotworkingnormally Caution 1.WhenreplacingtheCoverIceMotor,pullouttheplugtoavoidanelectricshock. 2.Becareful!WhendisassembletheCoverIceMotor,springcanjumpedoutandmaycausepersonalinjury. 3.MotorwillrotatecontinuouslywhentheMotorSwitchisnotsensed. Start ☞ C heckingMehodofCoverIceRouteMotor Resistance (MakesuretoworkafterPowerOff) thevoltageofResistanceisvariable accordingtotheinputvoltage. DoesGEAREDMOTOR workproperly? CN70-"5"(Red)↔ CN73_1-"3"(Blue) **0Ω:Shorttrouble/Ω∞:Opentrouble ReplacetheMOTOR IsCubedorCrushed Icemodeselectedonthe LEDPANEL? CubedorCrushedIceisselected ontheLEDPANELPCB IstheDISPENSER switchselected? SelecttheDISPENSERswitch Doesthewiringatthe bothsidesofmotorconnected properly? ChecktheWIRE WhentheMOTOR rotates. IstheACinputvoltage appliedtothebothends ofthemotor? ChecktheMOTOR/Checkany interferenceonMOTORrotation ① Check CN73_1-"3" Connector / Re-connect ②...

  • Page 90: IfInverterPcbPowerIsNotSupplied

    TROUBlESHOOTING 4-2-16.IfInverterPCBPowerisnotsupplied Caution AttheINVERTERPCBPower,AC - S eetheoperationsand 110V/220VpowerandoverDC300V Start reference in this manual ofhigh-voltageareapplied.Please whenchecktheMAINPCB. takecareofyourselfwhenrepairand measure. Isthe fuseonAC110V/220V down? ReplaceFUSE&checktherootcause Is110V/220V appliedbetweenbothendof PCBinverterCN101"1”and CN102"3”? Checkthewireconnection Isthe fuseonInverterPCB down? ReplaceFuse AC220:250V5.0A AC110:250V6.3A IsDC300V appliedbetweenbothendsof BD1+,-? CheckPCBPATTERN&ReplaceBD1 IsDC300V appliedtoHyBRID IC#10PIN? ReplacePCBASS`y IsDC15V appliedtoHyBRID IC#1PIN?

  • Page 91: LedBlinkingFrequencyDependingOnProtectingFunctions

    TROUBlESHOOTING 4-2-17.LEDblinkingfrequencydependingonprotectingfunctions IfFailureConditionisdetectedduringcompressorisoperating,immediatelystopCompressoroperatingandstandby 5minutes.Duringthis5minutes,RPMcommandsignalisnotavailable.Itmeans,evenifavailableRPMcommand signalisappliedtothecompressor,itdoesnotworkandkeepstandingby. Blinkingtimeis1secondanddwelltimeis2seconds. LEDBlinkingFrequency ProtectingFunctions Remarks NormalOperation StartingFailure 1.ShortbetweenCOMPU,V,andWphase(CN301) 2.ShortamongIPMPins(No,#1~33) 3.DroptheIPMoperatingVoltag e underDC13.5V 4.Othercases,cjecktheCOMP,cycle,etc. SPMFault 1.OpentheCOMPwire(CN301) AbnormalCurrent 2.BadconditionofR308(ex.Badsoldering) Detection 3.Othercases,cjecktheCOMP,cycle,etc. 1.OperatingthelockedrotorCOMPwithin5second. 2. O peratingtheCOMPunder1000RPMmorethan MotorLocked/ 5secod. OverRPM 3.Shorttheshuntresistorbetweenleads. 4. O ccurthehugechangeofinputvoltageinamoment 5.Othercases,checktheCOMP,cycle,etc. 1.DroptheinputvoltageunderAC53V UnderVoltage 2.ShortresistorR513(DClinkresistor) 1.IncreasetheinputvoltageoverAC154V OverVoltage 2.ShortresistoramongR501,R505andR509 (DClinkresistor) LEDblinkingfrequencydependingonprotectingfunctions...

  • Page 92: SpmInternalDiodeVoltage

    TROUBlESHOOTING IPMFREEWHEELINGDIODEVOLTAGEVALUE...

  • Page 93: InverterControllerBoardConnectorLocation

    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.

  • Page 94: InverterPcbCircuitDiagram

    TROUBlESHOOTING INVERTER PCB Circuit Diagram...

  • Page 95: PcbDiagram

    5. PCB dIAGRAM 5-1)PCBLAyOUTWITHPARTPOSITION ····································································································· 95 5-2)PCBLAyOUTWITHPARTPOSITION(SMPSBOARD) ············································································ 96 5-3)CONNECTORLAyOUTWITHPARTPOSITION(MAINBOARD) ······························································ 97 5-4)CONNECTORLAyOUTWITHPARTPOSITION(SMPSBOARD) ······························································ 98...

  • Page 96: 5-1)PcbLayoutWithPartPosition

    PCB dIAGRAM 5-1) PCB layout with part position 1. DC12V,5V,GNDsuppliedfromSMPSPCB 2. CircuitforcontrollingStep-Valve(3-WayValve)*Option 3.  F ANMOTORcontrolpart:Tosupplythepowerfrom8.3V~12Vaccordingtothemotortypes. (F,R,C,ICE) 4. EEPROM:Saveandrecordeverykindsofdata. 5. TransmitinputtedsignalsfromeverysensorintoMICOMaftereliminatethenoise. 6.  M icom:controltheregrigeratorCeramicresonator:generatethebasicfrequencyofMicomoperation. ResetIC:makeMicomresetifinputvoltageofMicomisdetectedlessthanthespecifiedvoltage 7.  P LCinput/output -PLC(PowerLinecommunication)*Option(PLCmoduleisnotinsertedunlessspecifiedoccasion) 8. OperateICE-MAKER,supplypowertoMOTOR,andsensethevariationofswitch. 9.  M ainMicom ↔PanelMicomserialcommunicationcircuit-Dispenseroptioninputpart (Water&CoverIcerouteswitch) 10. PANTRyRoomdisplaycontrolpart:displayLED,detectKEystate. 11. ControlPANTRyRoomdamper&Damperheater 12. WaterTankHeaterControls(alsocontrolsotheroptions) 13. LEDLAMPControlCircuit(F,RroomLamp)

  • Page 97: 5-2)PcbLayoutWithPartPosition(SmpsBoard)

    PCB dIAGRAM 5-2) PCB layout with part position (Inverter Board) 1.  P owersupply:Thepowersupplycircuitmakesthenon-isolated15Vand5VvoltagesourcefortheIPM drivecircuitandtheMCU 2.  C urrentdetectioncircuit:ThecurrentdetectioncircuitistodetecttheDCLinkcurrentbysensingthe voltageoftheshuntresistor. 3. IPM(SCM1101M) 4.  C ompdrivecommandcircuit:Thecompdrivecommandcircuitistotransfertheextemalcommand signaltotheMCU 5.  I PMBootstrapcircuit:Theipmbootstrapcircuitmakethefloated15Vvoltagesourceforthehigh-side IGBTdrivecircuitoftheIPM 6. MICOM...

  • Page 98: 5-3)ConnectorLayoutWithPartPosition(MainBoard)

    PCB dIAGRAM 5-3) Connector layout with part position (Main Board) 5-3-1.RF4267H*** Pantry Room Display Pantry Room Switch ICE MAKER(FZ) MOTOR CW ICE MAKER(FZ) MOTOR CCW Sensor(FZ) Test Switch(FZ) Hall IC Output Pantry Room Sensor...

  • Page 99: 5-4)ConnectorLayoutWithPartPosition(SmpsBoard)

    PCB dIAGRAM 5-4) Connector layout with part position (Inverter Board)

  • Page 100: WiringDiagram

    6. WIRING dIAGRAM 6-1) Model : RFG298**...

  • Page 101: SchematicDiagram

    7. SCHEMATIC dIAGRAM 7-1) Whole block diagram 6-1.MODEL:RFG298**...

  • Page 102: 7-2)WholeBlockDiagram

    7. SCHEMATIC dIAGRAM 7-2) Whole block diagram 7-2.MODEL:RFG298**...

  • Page 103: 7-3)CircuitDiagram

    SCHEMATIC dIAGRAM 7-3) CIRCUIT dIAGRAM 7-3-1.Main...

  • Page 104: Inverter

    SCHEMATIC dIAGRAM 7-3-2. INVERTER...
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