Manuals / Whirlpool / Kitchen Appliance / Dishwasher

Whirlpool MAH3000 Rear Access Panel, Water System Components, Pressure Switch, Water Valve

Models: MAH3000

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REAR ACCESS PANEL

REAR ACCESS PANEL

Removal of the access panel gains access to the rear components of the washer

(Figure 5-9).

Figure 5-9

WATER SYSTEM COMPONENTS

Warning - Always shut off electrical power to the unit before beginning any ser- vice repair procedures.

WATER VALVE

The water valve is accessible from the front of the machine. The flow rate of the valve is 4 gpm.

Removal

1.Discontinue power and water to the machine.

5.Locate and loosen the valve mounting screw by turning the screw at least three full turns.

NOTE: The mounting screw serves as a locating pin to hold the valve in position on the mounting bracket. By partially removing the screw, the water valve can now be slid to the left and removed from the bracket (Figure 5-10).

6.Carefully lift the valve with the inlet hoses attached and direct the inlet hoses through the openings in the valve mounting bracket.

7.The hoses can be crimped or the water shut off at the faucets. Place a towel below the valve and remove the inlet hoses from the water valve.

8.To reinstall, reverse the aforementioned procedure.

PRESSURE SWITCH

	2.	Remove the front panel and lift the top	The pressure switch was relocated from
			the console and mounted to a bracket
		cover.	extension molded as part of the pump
	3.	Remove the wire harness connections	assembly. A vertical outlet on the pump
			has a rubber cap positioned over the outlet
		to the water valve solenoids.	with a spout and is clamped into position.
	4.	Loosen and remove the hose clamps	The nipple of the pressure switch is in-
			serted into the rubber spout. Pressuriza-
		on the inlet hoses leading away from	tion in the vertical outlet of the pump
		the water valve.	actuates the pressure switch and deter-
			mines proper fill levels.	5-4
	16010486 (16008373-05)		Section 5. Teardown & Wiring Information

Revised 10/00

©2001 Maytag Appliances Sales Company

Image 152

Whirlpool MAH3000 Rear Access Panel, Water System Components, Removal 1. Discontinue power and water to the machine

Contents

Service Manual Customer ServiceWasher 16010061SAFETY PRECAUTIONS USE ONLY GENUINE MAYTAG APPROVED FACTORY REPLACEMENT COMPONENTSINTRODUCTION MAH3000Models covered in this manual Maytag Appliances Sales Company 240 Edwards Street, S.E Cleveland, TNC O N T E N T S GENERALSECTION ASSEMBLYCABINET ASSEMBLY DIAGNOSTICMOTOR DisplacementOUTER MACHINEPRE-INSTALLATION REQUIREMENTS Checkpoints for proper installationUNCRATING INSTRUCTIONS NOTE Proper installation is the responsibil- ity of the purchaserINSTALLATION GROUNDING POLARITY CHECKS CAUTION Do not cut or remove the ground- ing prong from this plugSPECIFICATIONS USE OF ADAPTERS IS NOT RECOMMENDEDWASHER CONTROLS Prior To SeriesINPUT DEFINITIONS Series 17 & LaterDOOR LOCK SWITCH INPUT END-OF-CYCLE SIGNAL INPUTTIMER INPUTS DefinitionsSTART/STOP INPUT See Push-To-Start/Line Relay OperationOUTPUT DEFINITIONS END-OF-CYCLE SIGNAL OUTPUTSee Timer Input Charts TIMER MOTOR OUTPUTWATER VALVE OUTPUTS TORQUE OUTPUTVcc REFERENCE VOLTAGE OUTPUT CYCLE SEQUENCE DEFINITIONS 1-10Timer Motor Output and Section 2 Timer Input Chart BLEACH DISPENSEMISCELLANEOUS Door Latch Switch Monitoring Door Lock/Spin ControlRedistribution 1-11Push-To-Start Relay Operation 1-12STARTING THE WASHER STOPPING THE WASHERCYCLE REVIEW Main Wash Time/Total Cycle Time - Minutes See Notes1-13 Diagnosis - Clothes Wet at End of SpinGENERAL COMPONENT EXPLODED VIEW 1-14SECTION 1. GENERAL INFORMATION 1998 Maytag CorporationSECTION 2. ELECTRICAL COMPONENTS & TESTING ELECTRICAL TEST EQUIPMENTDescription Part NumberELECTRICAL TESTS G r o u n d e d C o m p o n e n t sVoltage Checks Water Valve TestTimer & Console Switches Timer Input ChartsSECTION 2. ELECTRICAL COMPONENTS & TESTING T C BKey 0 = Input Signal Not Asserted1= Input t i m e rMachine Control M A C HIN E Motor Harness Connector DRIVE MOTORMOTOR CONTROL BOARD Motor Phase Test Motor & Motor Control TestMotor Windings Check 1 . Disconnect power to the washer prior to testing1 . Disconnect power to the unit w 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 kTachometer Circuit Diagnostics PHASEWIRE COLORS RESULT/SOLUTIONUNBALANCE CONTROL SYSTEM Wire ChecksTachometer Voltage FoundTub Displacement Switch Strut Displacement SwitchTesting the Tub Displacement Switch 1 . Disconnect power to the unit Testing the Strut Displacement SwitchInertial Unbalance Switch Cabinet Vibration AbsorberCabinet Vibration Sensor Testing the Inertial Unbalance SwitchSECTION 2. ELECTRICAL COMPONENTS & TESTING 2 - 11998 Maytag Corporation 1 6 0 0 8 3 7 3 - 0SECTION 3. TROUBLESHOOTING Shuts OFF When Push-To-Start Button Re- leasedStart Line Relay Operation Runs For Five Seconds Then Shuts OFFTumbles Only ContinuesTo Tumble After The Wash Cycle Is FinishedThird Rinse Cycle Is Always Cold Temperature InputsDoor Leaks “Thumping” Noise In SpinTicking or Knocking Noise In Spin RF Radio Frequency InterferenceT R O U B L E S H O O T I N G SECTION 3. TROUBLESHOOTING1998 Maytag Corporation 1 6 0 0 8 3 7 3 - 0T R O U B L E S H O O T I N G SECTION 3. TROUBLESHOOTING 31998 Maytag Corporation 1 6 0 0 8 3 7 3 - 0T R O U B L E S H O O T I N G SECTION 3. TROUBLESHOOTING1998 Maytag Corporation 1 6 0 0 8 3 7 3T R O U B L E S H O O T I N G SECTION 3. TROUBLESHOOTING 31998 Maytag Corporation 1 6 0 0 8 3 7 3 - 0T R O U B L E S H O O T I N G SECTION 3. TROUBLESHOOTING1998 Maytag Corporation 1 6 0 0 8 3 7 3 - 0T R O U B L E S H O O T I N G SECTION 3. TROUBLESHOOTING 31998 Maytag Corporation 1 6 0 0 8 3 7 3 - 03 - 1 T R O U B L E S H O O T I N GSECTION 3. TROUBLESHOOTING 1998 Maytag CorporationT R O U B L E S H O O T I N G SECTION 3. TROUBLESHOOTING 3 - 11998 Maytag Corporation 1 6 0 0 8 3 7 3 - 0T R O U B L E S H O O T I N G SECTION 3. TROUBLESHOOTING3 - 1 1998 Maytag CorporationT R O U B L E S H O O T I N G indicators of the Quick Wash and Regular washSECTION 3. TROUBLESHOOTING 3 - 1 1998 Maytag CorporationMISCELLANEOUS INFORMATION Energy UsageWasher WattagesR E M O V A L SECTION 4. CONSOLEDisconnect power to the unit VERTICAL SWITCHES Push Button HORIZONTAL SWITCHES Push-to-StartR E M O V A L R E P L A C E M E N TR 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 SECTION 5. CABINET ASSEMBLY DOOR ASSEMBLY & HINGESDISASSEMBLY R E M O V A LCabinet Vibration Absorber Door Latch HoopFRONT PANEL Disconnect power to the unitTOP COVER DOOR LOCK MECHANISMR E M O V A L 1. Remove the front panel See Front Panel RemovalFRONT SHROUD ASSEMBLY REMOVALTroubleshooting REMOVALR E M O V A L CABINET ASSEMBLY w/REAR ACCESS PANELHinge Removal 16008373-01 SECTION 5. CABINET ASSEMBLY1998 Maytag Corporation SECTION 6. WATER-CARRYING COMPONENTS WATER VALVEREAR REMOVAL FRONT REMOVALWATER LEVEL PRESSURE SWITCH AIR DOME HOSEREMOVAL FROM CONSOLE REMOVAL FROM OUTER TUBDISPENSER ASSEMBLY REPLACEMENT/ROUTINGNOTE Using soap and water may lead to a potential leak 1. Disconnect power to the unitPUMP ASSEMBLY FRONT WATER FLUME INJECTOR5. Disconnect the hoses attached to the dis- penser assembly procedure is not followed properlyPump Accessory Kit CLEANING THE PUMP1. Depress the locking tab on the face of the pump housing 1. Disconnect power to the unit5. 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 DOOR BOOT BAFFLESSECTION 7. OUTER TUB & SPINNER ASSEMBLY R E M O V A L 1. Disconnect power to the unitOUTER TUB COVER REPLACEMENT2. Stretch the rear lip of the door boot onto the tub cover 1. Disconnect power to the unitSPIN BASKET ASSEMBLY w/BALANCE RING R E M O V A L 1. Disconnect power to the unitDRIVE PULLEY 1. Disconnect power to the unitREPLACEMENT Figure7-6SPINNER TUB SUPPORT Disconnect power to the unitREPLACEMENT R E M O V A LFigure7-9 SEAL SYSTEMR E M O V A L 1. Disconnect power to the unit OUTER TUB ASSEMBLY COUNTER WEIGHTSBEARINGS REMOVAL OF UPPER WEIGHT 1. Disconnect power to the unitSTRUT ASSEMBLY Strut Displacement SwitchINERTIAL UNBALANCE SWITCH 1. Disconnect power to the unitTUB DISPLACEMENT SWITCH 1. Disconnect power to the unit1. Disconnect power to the unit REMOVAL16008373-01 SECTION 7. OUTER TUB & SPINNER ASSEMBLY1998 Maytag Corporation SECTION 8. MOTOR DRIVE SYSTEM DRIVE BELTDRIVE MOTOR R E M O V A LMACHINE CONTROL R E M O V A L 1 . Disconnect power to the unitR E P L A C E M E N T Console RemovalMOTOR CONTROL Disconnect power to the unitR E M O V A L R e m o v a l1 6 0 0 8 3 7 3 - 0 SECTION 8 . MOTOR DRIVE SYSYTEM1998 Maytag Corporation SECTION 9. ELECTRICAL SCHEMATICS & TIMER I N F O R M A T I O N Prior to SeriesELECTRICAL SCHEMATICS SECTIONTIMER CHART - Prior to Series ELECTRICAL SCHEMATICSSECTION 1998 Maytag CorporationELECTRICAL SCHEMATIC - Series ELECTRICAL SCHEMATICSSECTION 1998 Maytag CorporationTIMER CHART - Series ELECTRICAL SCHEMATICSSECTION 1998 Maytag CorporationELECTRICAL SCHEMATIC - Series ELECTRICAL SCHEMATICSSECTION 1998 Maytag CorporationTIMER CHART - Series ELECTRICAL SCHEMATICSSECTION 1998 Maytag CorporationELECTRICAL SCHEMATIC - Series ELECTRICAL SCHEMATICSSECTION 1998 Maytag CorporationN O T E S ELECTRICAL SCHEMATICSSECTION 1998 Maytag CorporationCONTENTS SPECIFICATIONSDISPENSER ASSEMBLY WIRING INFORMATIONSECTION 1. MAH4000/MAH5500A CONTROL FACIA SECTION 2. SPECIFICATIONS SECTION 3. BASIC MACHINE OPERATION SECTION 4. WASHER CONTROLS OVERVIEWSeries 10 MAH4000 only Series 11 & LaterSECTION 5. CYCLE REVIEW Cycle Times All Wash Time/Total Wash CycleNon-Max Cotton/SturdyStain Cycle General overview of Stain CycleThe following is an example of a Stain Cycle Suds detection during stain cycleSECTION 6. GENERAL COMPONENT - EXPLODED VIEW Component Identification & Location16010199 Revised 7/00SECTION 7. ELECTRICAL INFORMATION electrical power to the unit vice repair procedures1. Discontinue power and water to the SECTION 8. WATER CARRYING COMPONENTS1. Disconnect power and water to the machine OPERATIONSee Figure RECIRCULATION PUMPDETERGENT 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 SECTION 9. WIRING INFORMATION 16010199Revised 7/00 2000 Maytag Appliances Sales CompanySERIES 10 - SCHEMATIC MAH4000 only 16010199Revised 7/00 2000 Maytag Appliances Sales CompanySERIES 11 MAH4000 and MAH5500 16010199Revised 7/00 2000 Maytag Appliances Sales CompanySERIES 10 - TIMER CHART MAH4000 16010199Revised 7/00 2000 Maytag Appliances Sales CompanySERIES 11 - TIMER CHART MAH4000 & MAH5500A 16010199Revised 7/00 2000 Maytag Appliances Sales CompanyMAYTAG New Century Neptune Washer Service Manual Supplement16008373-05 DIAGNOSTIC/HELP CODE TABELS SECTION 4. ELECTRICAL COMPONENTS & TESTINGTEARDOWN & WIRING INFORMATION Models covered in this manual supplement MAH5500B MAH7500A2001 Maytag Appliances Sales Company 16010486Revised 02/01 SPECIFICATIONS SECTION 1. GENERAL INFORMATIONMAH5500B CONTROL FACIA MAH7500 CONTROL FACIAGeneral Flow Of A Complete Wash Cycle BASIC MACHINE OPERATIONCYCLE SEQUENCES Wash Time TumbleWash Selections Tumbling TimeINPUT WATER TEMPERATURE Extra Heavy, QuickSelected RinseFeatures of MAH5500B LED Washer Features of MAH7500 LCD WasherSECTION 2. WASHER CONTROLS OVERVIEW BASIC CONTROL BOARD PHILOSOPHY FOR BOTH WASHERSSIGNAL MODE USER INTERFACESELECTIONS LED Washer FABRIC MODEDISPLAY CHARACTERISTICS OPTIONS MODEPage 1-3 Extra Rinse Table Door Locked LEDPRESSURE SWITCH INPUT DOOR LOCK SWITCH INPUTINPUT MODIFICATIONS DEFINED TEMPERATURE SENSOR INPUTDiagnostics OUTPUT MODIFICATIONS DEFINEDSTART/PAUSE INPUT TACH INPUTWATER VALVE OUTPUTS CYCLE SEQUENCE DEFINITIONSMain Wash Target Temperatures SUDS DETECTION BLEACH DISPENSEREDISTRIBUTION DOOR LOCK OPERATION MISCELLANEOUSDOOR LOCK PHILOSOPHY POWER LOSS/FAILURE SPECIAL FEATURESMAH7500A ADVERTISING MODESERVICE MODE LED WasherLCD Washer 2-10Accessing Service Mode SERVICE MODE TABLE LED WasherLED WASHER SPECIAL TESTSQUICK SERVICE CYCLE 2-12Speed Range DisplayedAccessing The Help Codes BOARD INPUT TESTHELP CODES BOARD OUTPUT TESTDIAGNOSTIC CODES Section 5 DIAGNOSTIC/HELP CODE TABLESAccessing Diagnostic Codes Clearing Diagnostic Code ListACCESSING SERVICE MODE Service TestsLCD WASHER User Interface Tests2-16 Service CycleDuring a cycle Note This selection is valid only if a cycle is running 2-17DIAGNOSTIC/HELP CODES exit diagnostic/help codes Return toClear diagnostic codes Clear the entire list of diagnostic codes SYSTEM CHECKSection 3 DIAGNOSTIC/HELP CODE TABLES HELP CODES LISTINGHelp DescriptionHelp DescriptionTrigger Action to be TakenHelp DescriptionTrigger Action to be TakenDIAGNOSTIC CODES LISTING DiagDescription TriggerDiag DescriptionTrigger Action to be TakenDiag DescriptionTrigger Action to be TakenGENERAL COMPONENT - EXPLODED VIEW Component Identification & LocationSection 3. Teardown & Wiring Information 16010486Glossary of Terms Spin Speed - This is the speed of the washer spinner during extraction 3-10 Section 3. Teardown & Wiring Information16010486 Revised 2/01SECTION 4. ELECTRICAL COMPONENTS & TESTING ELECTRICAL TESTSGrounded Components Water Valve TestMachine Control Board Output TestINPUT/OUTPUT VOLTAGES LCD Washer INPUT/OUTPUT VOLTAGES LED WasherMembrane Pad Checks On the MAH5500B washer you can perform the Membrane Pad Check with the control console. See Section 2 Accessing Service Mode Membrane Pad CheckLCD Washer LED WasherMotor Control Access DRIVE MOTORMOTOR CONTROL BOARD Drip Shield RemovalMotor Phases Motor Drive System TestMachine Control Board Output Test Motor & Motor Control TestHEATER ASSEMBLY Heater Will Not Turn OnThermistor Temperature Chart Heating Targets UsingUser Selections Main Wash TemperingSECTION 5. TEARDOWN & WIRING INFORMATION CONSOLE REMOVALMICROPROCESSOR BOARD REMOVAL LCD MODELDOOR LATCH HOOP CABINET ASSEMBLYCONSOLE COVER PLUG DOOR LOCK MECHANISM RemovalREAR ACCESS PANEL Removal 1. Discontinue power and water to the machinePRESSURE SWITCH WATER SYSTEM COMPONENTSPUMP ASSEMBLY HEATER ASSEMBLYREINSTALLATION REMOVALREMOVAL Thermistor RemovalSUMP COVER WIRING INFORMATION MAH5500BSection 5. Teardown & Wiring Information 16010486MAH7500 Section 5. Teardown & Wiring Information16010486 Revised 10/00 2001 Maytag Appliances Sales CompanyCustomer Service 240 Edwards Street, S.E Cleveland, Tennessee Maytag Appliances Sales Company