Manuals / Whirlpool / Kitchen Appliance / Dishwasher

Whirlpool MAH3000 INPUT/OUTPUT VOLTAGES LCD Washer, INPUT/OUTPUT VOLTAGES LED Washer

Models: MAH3000

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INPUT/OUTPUT VOLTAGES (LCD Washer)

Description	Connector/	Connector/	Voltage	Comments
	Pin Number	Pin Number
Bleach water valve output	P1(5)	P8(2)	120 VAC

Chassis Ground	P3(1)		Ground

Cold water valve output	P1(4)	P8(2)	120 VAC	500-1K ohms

Door Lock output	P1(1)	P8(2)	120 VAC	60 millisecond pulse

Door lock switch input	P2(3)	P3(8)	24 VDC

Door switch input	P8(1)	P8(2)	120 VAC

Door unlock output	P8(3)	P8(2)	120 VAC	60 millisecond pulse

Drain pump output	P6(4)	P8(2)	120 VAC

Heater - Neutral	P6(1)	P8(1)	120 VAC	MAH7500 Only (~14 ohms)

High water level - input	P1(8)	P8(2)	120 VAC

Hot water valve output	P1(3)	P8(2)	120 VAC	500 - 1K ohms

L1 to machine control board	P6(2)	P8(2)	120 VAC

L1 to motor control	P6(3)	P8(2)	120 VAC

Lower water level - input	P2(3)	P3(5)	24 VDC

Motor control tach	P2(1)	P2(3)	24 VDC

Neutral (120 VAC)	P8(2)		Neutral

Unbalance input	P2(3)	P3(4)	24 VDC

Softener water valve	P1(6)	P8(2)	120 VAC

Sump thermistor	P5(3)	P5(4)	VDC	NTC device (see thermistor
				temperature chart - page 4-8 LCD
				model only (3K-18K ohms)
Torque PWM	P2(2)	P2(3)	24 VDC

Water valve thermistor	P3(6)	P3(7)	5 VDC	10K-85K ohms)

INPUT/OUTPUT VOLTAGES (LED Washer)

Description	Connector/	Connector/	Voltage	Comments
	Pin Number	Pin Number
Bleach water valve output	P1(5)	P8(2)	120 VAC

Chassis Ground	P3(1)		Ground

Cold water valve output	P1(4)	P8(2)	120 VAC	500-1K ohms

Door Lock output	P1(1)	P8(2)	120 VAC	60 millisecond pulse

Door lock switch input	P2(3)	P3(8)	24 VDC

Door switch input	P8(1)	P8(2)	120 VAC

Door unlock output	P8(2)	P8(2)	120 VAC	60 millisecond pulse

Drain pump output	P8(4)	P8(2)	120 VAC

(Open)	P6(2)	P8(1)

High water level - input	P1(8)	P8(2)	120 VAC

Hot water valve output	P1(3)	P8(2)	120 VAC	500 - 1K ohms

L1- machine control board	P6(1)	P8(2)	120 VAC

L1- motor control	P8(3)	P8(2)	120 VAC

Lower water level - input	P2(3)	P3(5)	24 VDC

Motor control tach	P2(1)	P2(3)	24 VDC

Neutral (120 VAC)	P6(3)		Neutral

Unbalance input	P2(3)	P3(4)	24 VDC

Softener water valve	P1(6)	P8(2)	120 VAC

Torque PWM	P2(2)	P2(3)	24 VDC

Water valve thermistor	P3(6)	P3(7)	5 VDC	(10K-85K ohms)

16010486 (16008373-05)Section 4. Electrical Components & Testing4-3

Revised 02/01	©2001 Maytag Appliances Sales Company

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Whirlpool MAH3000 service manual INPUT/OUTPUT VOLTAGES LCD Washer, INPUT/OUTPUT VOLTAGES LED Washer

Contents

16010061 Service ManualCustomer Service WasherUSE ONLY GENUINE MAYTAG APPROVED FACTORY REPLACEMENT COMPONENTS SAFETY PRECAUTIONSMaytag Appliances Sales Company 240 Edwards Street, S.E Cleveland, TN INTRODUCTIONMAH3000 Models covered in this manualGENERAL C O N T E N T SDIAGNOSTIC SECTIONASSEMBLY CABINET ASSEMBLYMACHINE MOTORDisplacement OUTERNOTE Proper installation is the responsibil- ity of the purchaser PRE-INSTALLATION REQUIREMENTSCheckpoints for proper installation UNCRATING INSTRUCTIONSINSTALLATION CAUTION Do not cut or remove the ground- ing prong from this plug GROUNDING POLARITY CHECKSUSE OF ADAPTERS IS NOT RECOMMENDED SPECIFICATIONSPrior To Series WASHER CONTROLSEND-OF-CYCLE SIGNAL INPUT INPUT DEFINITIONSSeries 17 & Later DOOR LOCK SWITCH INPUTDefinitions TEMPERATURE SENSOR INPUTTIMER INPUTS WATER TEMPERATURE INPUTSTIMER MOTOR OUTPUT OUTPUT DEFINITIONSEND-OF-CYCLE SIGNAL OUTPUT See Timer Input ChartsWATER VALVE OUTPUTS TORQUE OUTPUTVcc REFERENCE VOLTAGE OUTPUT Timer Motor Output and Section 2 Timer Input Chart CYCLE SEQUENCE DEFINITIONS1-10 DELAY1-11 MISCELLANEOUS Door Latch Switch MonitoringDoor Lock/Spin Control RedistributionSTOPPING THE WASHER Push-To-Start Relay Operation1-12 STARTING THE WASHERDiagnosis - Clothes Wet at End of Spin CYCLE REVIEWMain Wash Time/Total Cycle Time - Minutes See Notes 1-131998 Maytag Corporation GENERAL COMPONENT EXPLODED VIEW1-14 SECTION 1. GENERAL INFORMATIONPart Number SECTION 2. ELECTRICAL COMPONENTS & TESTINGELECTRICAL TEST EQUIPMENT DescriptionWater Valve Test ELECTRICAL TESTSG r o u n d e d C o m p o n e n t s Voltage ChecksT C B Timer & Console SwitchesTimer Input Charts SECTION 2. ELECTRICAL COMPONENTS & TESTINGt i m e r Key 0 = Input SignalNot Asserted 1= InputMachine Control M A C HIN E Motor Harness Connector DRIVE MOTORMOTOR CONTROL BOARD Motor & Motor Control Test Motor Phase Testw i n d i n g s c h e c k S e e M o t o r W i n d i n g s C h e c k Motor Windings Check1 . Disconnect power to the washer prior to testing 1 . Disconnect power to the unitRESULT/SOLUTION Tachometer Circuit DiagnosticsPHASE WIRE COLORSVoltage Found UNBALANCE CONTROL SYSTEMWire Checks TachometerTesting the Strut Displacement Switch Tub Displacement SwitchStrut Displacement Switch Testing the Tub Displacement Switch 1 . Disconnect power to the unitTesting the Inertial Unbalance Switch Inertial Unbalance SwitchCabinet Vibration Absorber Cabinet Vibration Sensor1 6 0 0 8 3 7 3 - 0 SECTION 2. ELECTRICAL COMPONENTS & TESTING2 - 1 1998 Maytag CorporationRuns For Five Seconds Then Shuts OFF SECTION 3. TROUBLESHOOTINGShuts OFF When Push-To-Start Button Re- leased Start Line Relay OperationThird Rinse Cycle Is Always Cold Temperature InputsTumbles Only ContinuesTo Tumble After The Wash Cycle Is FinishedRF Radio Frequency Interference Door Leaks“Thumping” Noise In Spin Ticking or Knocking Noise In Spin1 6 0 0 8 3 7 3 - 0 T R O U B L E S H O O T I N GSECTION 3. TROUBLESHOOTING 1998 Maytag Corporation1 6 0 0 8 3 7 3 - 0 T R O U B L E S H O O T I N GSECTION 3. TROUBLESHOOTING 3 1998 Maytag Corporation1 6 0 0 8 3 7 3 - 0 T R O U B L E S H O O T I N GSECTION 3. TROUBLESHOOTING 1998 Maytag Corporation1 6 0 0 8 3 7 3 - 0 T R O U B L E S H O O T I N GSECTION 3. TROUBLESHOOTING 3 1998 Maytag Corporation1 6 0 0 8 3 7 3 - 0 T R O U B L E S H O O T I N GSECTION 3. TROUBLESHOOTING 1998 Maytag Corporation1 6 0 0 8 3 7 3 - 0 T R O U B L E S H O O T I N GSECTION 3. TROUBLESHOOTING 3 1998 Maytag Corporation1998 Maytag Corporation 3 - 1T R O U B L E S H O O T I N G SECTION 3. TROUBLESHOOTING1 6 0 0 8 3 7 3 - 0 T R O U B L E S H O O T I N GSECTION 3. TROUBLESHOOTING 3 - 1 1998 Maytag Corporation1998 Maytag Corporation T R O U B L E S H O O T I N GSECTION 3. TROUBLESHOOTING 3 - 11998 Maytag Corporation T R O U B L E S H O O T I N Gindicators of the Quick Wash and Regular wash SECTION 3. TROUBLESHOOTING 3 - 1Wattages MISCELLANEOUS INFORMATIONEnergy Usage WasherR E M O V A L SECTION 4. CONSOLEDisconnect power to the unit R E P L A C E M E N T VERTICAL SWITCHES Push ButtonHORIZONTAL SWITCHES Push-to-Start R E M O V A LR E P L A C E M E N T TIMER REMOVAL1 . Disconnect power to the unit 1 6 0 0 8 3 7 3 - 0 1998 Maytag CorporationSECTION 4. CONSOLE R E M O V A L SECTION 5. CABINET ASSEMBLYDOOR ASSEMBLY & HINGES DISASSEMBLYDisconnect power to the unit Cabinet Vibration AbsorberDoor Latch Hoop FRONT PANEL1. Remove the front panel See Front Panel Removal TOP COVERDOOR LOCK MECHANISM R E M O V A LREMOVAL FRONT SHROUD ASSEMBLYREMOVAL TroubleshootingR E M O V A L CABINET ASSEMBLY w/REAR ACCESS PANELHinge Removal 16008373-01 SECTION 5. CABINET ASSEMBLY1998 Maytag Corporation FRONT REMOVAL SECTION 6. WATER-CARRYING COMPONENTSWATER VALVE REAR REMOVALREMOVAL FROM OUTER TUB WATER LEVEL PRESSURE SWITCHAIR DOME HOSE REMOVAL FROM CONSOLE1. Disconnect power to the unit DISPENSER ASSEMBLYREPLACEMENT/ROUTING NOTE Using soap and water may lead to a potential leakprocedure is not followed properly PUMP ASSEMBLYFRONT WATER FLUME INJECTOR 5. Disconnect the hoses attached to the dis- penser assembly1. Disconnect power to the unit Pump Accessory KitCLEANING THE PUMP 1. Depress the locking tab on the face of the pump housing5. Reverse the previous steps for replacement DRAIN HOSER E M O V A L 1. Disconnect power to the unit 16008373-01 1998 Maytag CorporationSECTION 6. WATER CARRYING COMPONENTS R E M O V A L 1. Disconnect power to the unit DOOR BOOTBAFFLES SECTION 7. OUTER TUB & SPINNER ASSEMBLY1. Disconnect power to the unit OUTER TUB COVERREPLACEMENT 2. Stretch the rear lip of the door boot onto the tub coverR E M O V A L 1. Disconnect power to the unit SPIN BASKET ASSEMBLY w/BALANCE RINGFigure7-6 DRIVE PULLEY1. Disconnect power to the unit REPLACEMENTR E M O V A L SPINNER TUB SUPPORTDisconnect power to the unit REPLACEMENTFigure7-9 SEAL SYSTEMR E M O V A L 1. Disconnect power to the unit REMOVAL OF UPPER WEIGHT 1. Disconnect power to the unit OUTER TUB ASSEMBLYCOUNTER WEIGHTS BEARINGS1. Disconnect power to the unit STRUT ASSEMBLYStrut Displacement Switch INERTIAL UNBALANCE SWITCHREMOVAL TUB DISPLACEMENT SWITCH1. Disconnect power to the unit 1. Disconnect power to the unit16008373-01 SECTION 7. OUTER TUB & SPINNER ASSEMBLY1998 Maytag Corporation R E M O V A L SECTION 8. MOTOR DRIVE SYSTEMDRIVE BELT DRIVE MOTORConsole Removal MACHINE CONTROLR E M O V A L 1 . Disconnect power to the unit R E P L A C E M E N TR e m o v a l MOTOR CONTROLDisconnect power to the unit R E M O V A L1 6 0 0 8 3 7 3 - 0 SECTION 8 . MOTOR DRIVE SYSYTEM1998 Maytag Corporation SECTION SECTION 9. ELECTRICAL SCHEMATICS & TIMER I N F O R M A T I O NPrior to Series ELECTRICAL SCHEMATICS1998 Maytag Corporation TIMER CHART - Prior to SeriesELECTRICAL SCHEMATICS SECTION1998 Maytag Corporation ELECTRICAL SCHEMATIC - SeriesELECTRICAL SCHEMATICS SECTION1998 Maytag Corporation TIMER CHART - SeriesELECTRICAL SCHEMATICS SECTION1998 Maytag Corporation ELECTRICAL SCHEMATIC - SeriesELECTRICAL SCHEMATICS SECTION1998 Maytag Corporation TIMER CHART - SeriesELECTRICAL SCHEMATICS SECTION1998 Maytag Corporation ELECTRICAL SCHEMATIC - SeriesELECTRICAL SCHEMATICS SECTION1998 Maytag Corporation N O T E SELECTRICAL SCHEMATICS SECTIONWIRING INFORMATION CONTENTSSPECIFICATIONS DISPENSER ASSEMBLYSECTION 1. MAH4000/MAH5500A CONTROL FACIA SECTION 2. SPECIFICATIONS Series 11 & Later SECTION 3. BASIC MACHINE OPERATIONSECTION 4. WASHER CONTROLS OVERVIEW Series 10 MAH4000 onlySECTION 5. CYCLE REVIEW Cotton/Sturdy Cycle TimesAll Wash Time/Total Wash Cycle Non-MaxSuds detection during stain cycle Stain CycleGeneral overview of Stain Cycle The following is an example of a Stain CycleRevised 7/00 SECTION 6. GENERAL COMPONENT - EXPLODED VIEWComponent Identification & Location 16010199SECTION 7. ELECTRICAL INFORMATION SECTION 8. WATER CARRYING COMPONENTS electrical power to the unitvice repair procedures 1. Discontinue power and water to theRECIRCULATION PUMP 1. Disconnect power and water to the machineOPERATION See FigureDETERGENT HOSE Removal 1. Disconnect power and water to the washerNOTE Indicator mark on hose for reinstallation See Figure See Figure 8-113. Locate the rear mounting clip on the detergent hose in the access panel opening and slide the clip off the cabinet flange. See Figure Page 2000 Maytag Appliances Sales Company SECTION 9. WIRING INFORMATION16010199 Revised 7/002000 Maytag Appliances Sales Company SERIES 10 - SCHEMATIC MAH4000 only16010199 Revised 7/002000 Maytag Appliances Sales Company SERIES 11 MAH4000 and MAH550016010199 Revised 7/002000 Maytag Appliances Sales Company SERIES 10 - TIMER CHART MAH400016010199 Revised 7/002000 Maytag Appliances Sales Company SERIES 11 - TIMER CHART MAH4000 & MAH5500A16010199 Revised 7/00MAYTAG New Century Neptune Washer Service Manual Supplement16008373-05 Models covered in this manual supplement MAH5500B MAH7500A DIAGNOSTIC/HELP CODE TABELSSECTION 4. ELECTRICAL COMPONENTS & TESTING TEARDOWN & WIRING INFORMATION2001 Maytag Appliances Sales Company 16010486Revised 02/01 MAH7500 CONTROL FACIA SPECIFICATIONSSECTION 1. GENERAL INFORMATION MAH5500B CONTROL FACIABASIC MACHINE OPERATION General Flow Of A Complete Wash CycleTumbling Time CYCLE SEQUENCESWash Time Tumble Wash SelectionsExtra Heavy, Quick INPUT WATER TEMPERATURETemperature temperatureBASIC CONTROL BOARD PHILOSOPHY FOR BOTH WASHERS Features of MAH5500B LED WasherFeatures of MAH7500 LCD Washer SECTION 2. WASHER CONTROLS OVERVIEWDELAY MODE TEMPERATURE MODEdelay wash key will be locked out SIGNAL MODEDoor Locked LED DISPLAY CHARACTERISTICSOPTIONS MODE Page 1-3 Extra Rinse TableINPUT MODIFICATIONS DEFINED PRESSURE SWITCH INPUTTEMPERATURE SENSOR INPUT DOOR LOCK SWITCH INPUTTACH INPUT DiagnosticsOUTPUT MODIFICATIONS DEFINED START/PAUSE INPUTWATER VALVE OUTPUTS Main Wash Target TemperaturesCYCLE SEQUENCE DEFINITIONS SUDS DETECTION BLEACH DISPENSEREDISTRIBUTION DOOR LOCK OPERATION MISCELLANEOUSDOOR LOCK PHILOSOPHY ADVERTISING MODE POWER LOSS/FAILURESPECIAL FEATURES MAH7500A2-10 SERVICE MODELED Washer LCD WasherSPECIAL TESTS Accessing Service ModeSERVICE MODE TABLE LED Washer LED WASHERDisplayed QUICK SERVICE CYCLE2-12 Speed RangeBOARD OUTPUT TEST Accessing The Help CodesBOARD INPUT TEST HELP CODESClearing Diagnostic Code List DIAGNOSTIC CODESSection 5 DIAGNOSTIC/HELP CODE TABLES Accessing Diagnostic CodesUser Interface Tests ACCESSING SERVICE MODEService Tests LCD WASHER2-16 Service CycleDuring a cycle 2-17 Note This selection is valid only if a cycle is runningSYSTEM CHECK DIAGNOSTIC/HELP CODESexit diagnostic/help codes Return to Clear diagnostic codes Clear the entire list of diagnostic codesDescription Section 3 DIAGNOSTIC/HELP CODE TABLESHELP CODES LISTING HelpAction to be Taken HelpDescription TriggerAction to be Taken HelpDescription TriggerTrigger DIAGNOSTIC CODES LISTINGDiag DescriptionAction to be Taken DiagDescription TriggerAction to be Taken DiagDescription Trigger16010486 GENERAL COMPONENT - EXPLODED VIEWComponent Identification & Location Section 3. Teardown & Wiring InformationGlossary of Terms Spin Speed - This is the speed of the washer spinner during extraction Revised 2/01 3-10Section 3. Teardown & Wiring Information 16010486Water Valve Test SECTION 4. ELECTRICAL COMPONENTS & TESTINGELECTRICAL TESTS Grounded ComponentsBoard Output Test Machine ControlINPUT/OUTPUT VOLTAGES LED Washer INPUT/OUTPUT VOLTAGES LCD WasherLED Washer Membrane Pad ChecksOn the MAH5500B washer you can perform the Membrane Pad Check with the control console. See Section 2 Accessing Service Mode Membrane Pad Check LCD WasherDrip Shield Removal Motor Control AccessDRIVE MOTOR MOTOR CONTROL BOARDMotor & Motor Control Test Motor PhasesMotor Drive System Test Machine Control Board Output TestHeater Will Not Turn On HEATER ASSEMBLYMain Wash Tempering Thermistor Temperature ChartHeating Targets Using User SelectionsLCD MODEL SECTION 5. TEARDOWN & WIRING INFORMATIONCONSOLE REMOVAL MICROPROCESSOR BOARD REMOVALDOOR LATCH HOOP CABINET ASSEMBLYCONSOLE COVER PLUG Removal DOOR LOCK MECHANISMWATER SYSTEM COMPONENTS REAR ACCESS PANELRemoval 1. Discontinue power and water to the machine PRESSURE SWITCHREMOVAL PUMP ASSEMBLYHEATER ASSEMBLY REINSTALLATIONREMOVAL Thermistor RemovalSUMP COVER 16010486 WIRING INFORMATIONMAH5500B Section 5. Teardown & Wiring InformationRevised 10/00 2001 Maytag Appliances Sales Company MAH7500Section 5. Teardown & Wiring Information 16010486Maytag Appliances Sales Company Customer Service 240 Edwards Street, S.E Cleveland, Tennessee