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Contents Technical Service Guide Reconnect all Grounding Devices Safety InformationImportant Safety Notice GE AppliancesTable of Contents Page 3UHVFULSWLRQ 6DIHW\ *ODVVHV 6DIHW\ *ODVVHV Pxvw EH $16 Safety RequirementsHhshu XW 5HVLVWDQW 6OHHYH V = FrpsoldqwNomenclature Serial NumberIntroduction GE DishwasherPage Product Specifications InstallationGDT550HGD Sound insulation Page Tools Needed AC VoltageDC Voltage ‡ 7KHUPLVWRU LQ Iorrg VZLWFK 5HVLVWDQFH 7HPSHUDWXUHControl Features OperationWash Temp Boost Delay HoursRinse Wash Temp SaniControl Lock CancelClean Energy SmartCycle Chart Auto Hot Start Cycle TimesCycle Temperatures Service Mode TroubleshootingDiagnostic Error Code Display Mode Main Control Service LEDDisplaying Diagnostic Error Codes Diagnostic Error CodesDoor Status Check Service Mode Flashing LightsPoor Washability Water on Floor /HYHO Glvkzdvkhu Ohiw WR Uljkw DQG Iurqw WR EDFN ‡ RRU NoiseDishwasher Does Not Start \FOHService LED DOO Rwkhu Exwwrqv Uhvsrqg DV Qrupdo Component Locator Views Front ViewSide View Bottom View Sump Components, Top Sump Components, Bottom Junction Box Tub and StructureToe Kick GDT550 Sound insulationGrhq Qxwv WR DFW DV MDP Qxwv Deryh DQG Ehorz WKH Edvh UDLO All Ground Wires Must be Securely AttachedLeveling Legs ± ± 5HPRYH WKH Udfn DVVHPEO\ Iurp WKH GLVKZDVKHU Upper Rack$ 7 7RU LV Uhtxluhg WR Uhpryh 5DFN DQG 7XE 5ROOHUV ± ±Lower Rack Reversible and Fold Down Tines± ± 7KH Iluvw * Lvkzdvkhuv Surgxfhg -XO\ ± ± 5HPRYH Srzhu WR WKH GLVKZDVKHU 5HPRYH WRH NLFN DoorTo remove Door ± ± 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± ± 5HPRYH ó´ KH Khdg VFUHZV Door GasketTo separate door Potential Ergonomic Risk GE Factory 5HPRYH GRRUTo Diagnose GDF510 Detergent Module Detergent ModuleTo remove the Detergent Module Front Control Door Console 5HPRYH DQG Vhsdudwh GRRU Top Control Door Control PanelPocket Handle &RQWURO DQG Fryhu Zloo Gurs Grzq Iurp Frqwuro SDQHO7R UHPRYH 5HPRYH DQG Vhsdudwh GRRU Bar HandleLatch strike VFUHZVFront Control UI BoardSS Door Attach Strips 6OLGH WKH Vwuls Lqzdug WR Uhpryh Frqwuro Top Control UI Control ReplacementMain Control Board ± ±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 reinstalled ± ±Wire Routing Latch AssemblyLatch Switch Diagnosis Latch Switch Strip CircuitFill Strip Circuits Fill SystemFill Operation Proper Water LevelFill Diagnostics Thermistor Strip Circuit± ± Iorru Sodwh DQG Iorrg VZLWFK Fill Flood/Float Switch Removal5HPRYH DQ\ Zdwhu LQ WKH Vxps DUHD ± ± 5HPRYH ó KH Khdg Vfuhzv Iurp Eudfnhw WR OHJ DVVHPEO\ Fill Funnel and HoseFill Water Valve 5HPRYH 3RZHU WR LVKZDVKHU 5HPRYH 7RH .LFNCirculation Specifications Circulation SystemCirculation Operation To Remove circulation pump motor assembly 5HPRYH WKH GRRU± ± /RRVHQ WKH Lqohw DQG Rxwohw Zdvk Prwru FODPSV 5HPRYH WKH Vxps PRGXOHWKH Vxps PRGXOH ± ±Filters Turbidity Sensor DiagnosticsCirculation Turbidity Sensor Turbidity Sensor CalibrationUpper Spray Arm ± ±Middle Conduit Middle Spray Arm Lower Spray ArmCirculation Diverter ± ±± ± \FOH UHSHDWV Circulation Conduit AssemblyTo Remove the Diverter To remove the conduit 5HPRYH WKH Xsshu VSUD\ DUP 7KH Pdlq Frqgxlw FDQ QRZ EH Uhpryhg Iurp WKH GLVKZDVKHU± ± Drain Cycle Algorithm Drain SystemDrain Operation ± ±Ulps W\SH Fodpsv Zloo EH Uhsodfhg E\ &ODPS .LW Drain Strip Circuits Drain Pump‡ Vhfrqgv RII ‡ Vhfrqgv RQ To remove or replace the Drain PumpDrain Diagnostics Dry Cycle Operation Dry Cycle SpecificationsDry System To Remove the VentHeater can be removed 2 ways Dry Cycle DiagnosticsHeating Element 5HPRYH WKH Grru VHH Grru UHPRYDODry Cycle Strip Circuits Tub TCO ± ±Service Control Replacement Page Connectors and Pin Locations Main Board top Main Board bottomSchematics GDF510GDF520 and GDF540 GDT530 and GDT550 GE Dishwasher Warranty For The Period GE Will Replace One Year