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Contents Technical Service Guide Important Safety Notice Safety InformationReconnect all Grounding Devices GE AppliancesTable of Contents Page Hhshu XW 5HVLVWDQW 6OHHYH V Safety Requirements3UHVFULSWLRQ 6DIHW\ *ODVVHV 6DIHW\ *ODVVHV Pxvw EH $16 = FrpsoldqwSerial Number NomenclatureGE Dishwasher IntroductionPage Installation Product SpecificationsGDT550HGD Sound insulation Page DC Voltage AC VoltageTools Needed ‡ 7KHUPLVWRU LQ Iorrg VZLWFK 5HVLVWDQFH 7HPSHUDWXUHOperation Control FeaturesRinse Delay HoursWash Temp Boost Wash Temp SaniClean CancelControl Lock Energy SmartCycle Chart Cycle Times Auto Hot StartCycle Temperatures Diagnostic Error Code Display Mode TroubleshootingService Mode Main Control Service LEDDisplaying Diagnostic Error Codes Diagnostic Error CodesDoor Status Check Flashing Lights Service ModePoor Washability Water on Floor /HYHO Glvkzdvkhu Ohiw WR Uljkw DQG Iurqw WR EDFN Dishwasher Does Not Start Noise‡ RRU \FOHDOO Rwkhu Exwwrqv Uhvsrqg DV Qrupdo Service LEDFront View Component Locator ViewsSide View Bottom View Sump Components, Top Sump Components, Bottom Toe Kick Tub and StructureJunction Box GDT550 Sound insulationLeveling Legs All Ground Wires Must be Securely AttachedGrhq Qxwv WR DFW DV MDP Qxwv Deryh DQG Ehorz WKH Edvh UDLO ± ±$ 7 7RU LV Uhtxluhg WR Uhpryh 5DFN DQG 7XE 5ROOHUV Upper Rack 5HPRYH WKH Udfn DVVHPEO\ Iurp WKH GLVKZDVKHU ± ±Lower Rack Reversible and Fold Down Tines± ± ± ± 7KH Iluvw * Lvkzdvkhuv Surgxfhg -XO\To remove Door Door 5HPRYH Srzhu WR WKH GLVKZDVKHU 5HPRYH WRH NLFN ± ± 5HOHDVH WKH Zluh Wlhv Kroglqj WKH Kduqhvv WR WKH WXE 5HPRYH ó´ KH Khdg Vfuhzv DW Erwwrp RI GRRU± ± Inner Door Vent Cover Use care to prevent damage to the inner door± ± To separate door Potential Ergonomic Risk GE Factory Door Gasket 5HPRYH ó´ KH Khdg VFUHZV 5HPRYH GRRUTo remove the Detergent Module Detergent ModuleTo Diagnose GDF510 Detergent Module Front Control Door ConsolePocket Handle Top Control Door Control Panel 5HPRYH DQG Vhsdudwh GRRU &RQWURO DQG Fryhu Zloo Gurs Grzq Iurp Frqwuro SDQHOLatch strike Bar Handle7R UHPRYH 5HPRYH DQG Vhsdudwh GRRU VFUHZVSS Door Attach Strips UI BoardFront Control 6OLGH WKH Vwuls Lqzdug WR Uhpryh Frqwuro Main Control Board UI Control ReplacementTop Control ± ±To Access Main Control Board 7KH Pdlq Frqwuro KDV D Vhuylfh / Zklfk Dlgv GLDJQRVWLFV± ± Sump Module To Diagnose Main Control BoardTo remove the sump module ± ± ± ± All Safety Shields must be reinstalledLatch Switch Diagnosis Latch AssemblyWire Routing Latch Switch Strip CircuitFill Operation Fill SystemFill Strip Circuits Proper Water LevelFill Diagnostics Thermistor Strip Circuit± ± 5HPRYH DQ\ Zdwhu LQ WKH Vxps DUHD Fill Flood/Float Switch RemovalIorru Sodwh DQG Iorrg VZLWFK ± ±Fill Water Valve Fill Funnel and Hose 5HPRYH ó KH Khdg Vfuhzv Iurp Eudfnhw WR OHJ DVVHPEO\ 5HPRYH 3RZHU WR LVKZDVKHU 5HPRYH 7RH .LFNCirculation Specifications Circulation SystemCirculation Operation To Remove circulation pump motor assembly 5HPRYH WKH GRRU± ± WKH Vxps PRGXOH 5HPRYH WKH Vxps PRGXOH /RRVHQ WKH Lqohw DQG Rxwohw Zdvk Prwru FODPSV ± ±Circulation Turbidity Sensor Turbidity Sensor DiagnosticsFilters Turbidity Sensor Calibration± ± Upper Spray ArmCirculation Diverter Middle Spray Arm Lower Spray ArmMiddle Conduit ± ±± ± To Remove the Diverter Circulation Conduit Assembly\FOH UHSHDWV To remove the conduit 5HPRYH WKH Xsshu VSUD\ DUP 7KH Pdlq Frqgxlw FDQ QRZ EH Uhpryhg Iurp WKH GLVKZDVKHU± ± Drain Operation Drain SystemDrain Cycle Algorithm ± ±‡ Vhfrqgv RII ‡ Vhfrqgv RQ Drain Strip Circuits Drain PumpUlps W\SH Fodpsv Zloo EH Uhsodfhg E\ &ODPS .LW To remove or replace the Drain PumpDrain Diagnostics Dry System Dry Cycle SpecificationsDry Cycle Operation To Remove the VentHeating Element Dry Cycle DiagnosticsHeater can be removed 2 ways 5HPRYH WKH Grru VHH Grru UHPRYDO± ± Dry Cycle Strip Circuits Tub TCOService Control Replacement Page Main Board top Main Board bottom Connectors and Pin LocationsGDF510 SchematicsGDF520 and GDF540 GDT530 and GDT550 For The Period GE Will Replace One Year GE Dishwasher Warranty