Tachometer Circuit Diagnostics, Phase | Whirlpool MAH3000 manual

Image 30

Whirlpool MAH3000 service manual Tachometer Circuit Diagnostics, Phase, Wire Colors, Motor Condition, Result/Solution

Contents

Washer Service ManualCustomer Service 16010061 SAFETY PRECAUTIONS USE ONLY GENUINE MAYTAG APPROVED FACTORY REPLACEMENT COMPONENTS Models covered in this manual INTRODUCTIONMAH3000 Maytag Appliances Sales Company 240 Edwards Street, S.E Cleveland, TN C O N T E N T S GENERAL CABINET ASSEMBLY SECTIONASSEMBLY DIAGNOSTIC OUTER MOTORDisplacement MACHINE UNCRATING INSTRUCTIONS PRE-INSTALLATION REQUIREMENTSCheckpoints for proper installation NOTE Proper installation is the responsibil- ity of the purchaser INSTALLATION GROUNDING POLARITY CHECKS CAUTION Do not cut or remove the ground- ing prong from this plug SPECIFICATIONS USE OF ADAPTERS IS NOT RECOMMENDED WASHER CONTROLS Prior To Series DOOR LOCK SWITCH INPUT INPUT DEFINITIONSSeries 17 & Later END-OF-CYCLE SIGNAL INPUT START/STOP INPUT TIMER INPUTSDefinitions See Push-To-Start/Line Relay Operation See Timer Input Charts OUTPUT DEFINITIONSEND-OF-CYCLE SIGNAL OUTPUT TIMER MOTOR OUTPUT TORQUE OUTPUT Vcc REFERENCE VOLTAGE OUTPUTWATER VALVE OUTPUTS Timer Motor Output and Section 2 Timer Input Chart CYCLE SEQUENCE DEFINITIONS1-10 BLEACH DISPENSE Redistribution MISCELLANEOUS Door Latch Switch MonitoringDoor Lock/Spin Control 1-11 STARTING THE WASHER Push-To-Start Relay Operation1-12 STOPPING THE WASHER 1-13 CYCLE REVIEWMain Wash Time/Total Cycle Time - Minutes See Notes Diagnosis - Clothes Wet at End of Spin GENERAL COMPONENT EXPLODED VIEW 1-14 Description SECTION 2. ELECTRICAL COMPONENTS & TESTINGELECTRICAL TEST EQUIPMENT Part Number Voltage Checks ELECTRICAL TESTSG r o u n d e d C o m p o n e n t s Water Valve Test SECTION 2. ELECTRICAL COMPONENTS & TESTING Timer & Console SwitchesTimer Input Charts T C B 1= Input Key 0 = Input SignalNot Asserted t i m e r Machine Control M A C HIN E DRIVE MOTOR MOTOR CONTROL BOARDMotor Harness Connector Motor Phase Test Motor & Motor Control Test 1 . Disconnect power to the unit Motor Windings Check1 . Disconnect power to the washer prior to testing 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 k WIRE COLORS Tachometer Circuit DiagnosticsPHASE RESULT/SOLUTION Tachometer UNBALANCE CONTROL SYSTEMWire Checks Voltage Found Testing the Tub Displacement Switch 1 . Disconnect power to the unit Tub Displacement SwitchStrut Displacement Switch Testing the Strut Displacement Switch Cabinet Vibration Sensor Inertial Unbalance SwitchCabinet Vibration Absorber Testing the Inertial Unbalance Switch 1998 Maytag Corporation Start Line Relay Operation SECTION 3. TROUBLESHOOTINGShuts OFF When Push-To-Start Button Re- leased Runs For Five Seconds Then Shuts OFF Third Rinse Cycle Is Always Cold Tumbles OnlyContinuesTo Tumble After The Wash Cycle Is Finished Temperature Inputs Ticking or Knocking Noise In Spin Door Leaks“Thumping” Noise In Spin RF Radio Frequency Interference T R O U B L E S H O O T I N G SECTION 3. TROUBLESHOOTING 3 1998 Maytag Corporation T R O U B L E S H O O T I N GSECTION 3. TROUBLESHOOTING 1 6 0 0 8 3 7 3 1998 Maytag Corporation T R O U B L E S H O O T I N GSECTION 3. TROUBLESHOOTING 3 1 6 0 0 8 3 7 3 - 0 1998 Maytag Corporation T R O U B L E S H O O T I N GSECTION 3. TROUBLESHOOTING 1 6 0 0 8 3 7 3 - 0 1998 Maytag Corporation 3 - 1 SECTION 3. TROUBLESHOOTING 3 - 1 3 - 1 indicators of the Quick Wash and Regular wash SECTION 3. TROUBLESHOOTING 3 - 1 Washer MISCELLANEOUS INFORMATIONEnergy Usage Wattages SECTION 4. CONSOLE Disconnect power to the unitR E M O V A L VERTICAL SWITCHES Push Button HORIZONTAL SWITCHES Push-to-StartR E P L A C E M E N T TIMER REMOVAL 1998 Maytag Corporation DISASSEMBLY SECTION 5. CABINET ASSEMBLYDOOR ASSEMBLY & HINGES R E M O V A L FRONT PANEL Cabinet Vibration AbsorberDoor Latch Hoop Disconnect power to the unit TOP COVER DOOR LOCK MECHANISM1. Remove the front panel See Front Panel Removal Troubleshooting FRONT SHROUD ASSEMBLYREMOVAL See Front Panel & Top Cover CABINET ASSEMBLY w/REAR ACCESS PANEL Hinge Removal SECTION 5. CABINET ASSEMBLY REAR REMOVAL SECTION 6. WATER-CARRYING COMPONENTSWATER VALVE FRONT REMOVAL REMOVAL FROM CONSOLE WATER LEVEL PRESSURE SWITCHAIR DOME HOSE REMOVAL FROM OUTER TUB DISPENSER ASSEMBLY REPLACEMENT/ROUTINGNOTE Using soap and water may lead to a potential leak 5. Disconnect the hoses attached to the dis- penser assembly PUMP ASSEMBLYFRONT WATER FLUME INJECTOR procedure is not followed properly 1. Depress the locking tab on the face of the pump housing Pump Accessory KitCLEANING THE PUMP 7. Installation is complete DRAIN HOSE 5. Reverse the previous steps for replacement 1998 Maytag Corporation SECTION 7. OUTER TUB & SPINNER ASSEMBLY DOOR BOOTBAFFLES Front Shroud Removal 2. Stretch the rear lip of the door boot onto the tub cover OUTER TUB COVERREPLACEMENT Shroud SPIN BASKET ASSEMBLY w/BALANCE RING 1. Slide pulley on shaft DRIVE PULLEYFigure7-6 Profile Washer Spinner Support Washer Locking Nut 7. Remove the shaft seal Figure SPINNER TUB SUPPORT3. Remove the drive pulley See Pulley Removal 1. Reverse the previous steps SEAL SYSTEM Figure7-9 BEARINGS OUTER TUB ASSEMBLYCOUNTER WEIGHTS REMOVAL OF UPPER WEIGHT 1. Disconnect power to the unit INERTIAL UNBALANCE SWITCH STRUT ASSEMBLYStrut Displacement Switch 3. Remove the wires to the switch TUB DISPLACEMENT SWITCH SECTION 7. OUTER TUB & SPINNER ASSEMBLY DRIVE MOTOR SECTION 8. MOTOR DRIVE SYSTEMDRIVE BELT R E M O V A L MACHINE CONTROL Console Removal MOTOR CONTROL R e m o v a l SECTION 8 . MOTOR DRIVE SYSYTEM ELECTRICAL SCHEMATICS SECTION 9. ELECTRICAL SCHEMATICS & TIMER I N F O R M A T I O NPrior to Series SECTION TIMER CHART - Prior to Series ELECTRICAL SCHEMATIC - Series TIMER CHART - Series SECTION ELECTRICAL SCHEMATIC - SeriesELECTRICAL SCHEMATICS 1998 Maytag Corporation SECTION TIMER CHART - SeriesELECTRICAL SCHEMATICS 1998 Maytag Corporation SECTION N O T E S DISPENSER ASSEMBLY CONTENTSSPECIFICATIONS WIRING INFORMATION SECTION 1. MAH4000/MAH5500A CONTROL FACIA SECTION 2. SPECIFICATIONS Series 10 MAH4000 only SECTION 3. BASIC MACHINE OPERATIONSECTION 4. WASHER CONTROLS OVERVIEW Series 11 & Later SECTION 5. CYCLE REVIEW Non-Max Cycle TimesAll Wash Time/Total Wash Cycle Cotton/Sturdy The following is an example of a Stain Cycle Stain CycleGeneral overview of Stain Cycle Suds detection during stain cycle SECTION 6. GENERAL COMPONENT - EXPLODED VIEW Component Identification & Location SECTION 7. ELECTRICAL INFORMATION 1. Discontinue power and water to the electrical power to the unitvice repair procedures SECTION 8. WATER CARRYING COMPONENTS 1. Disconnect power and water to the machine OPERATIONSee Figure Removal 1. Disconnect power and water to the washer NOTE Indicator mark on hose for reinstallation See Figure 8-11 3. Locate the rear mounting clip on the detergent hose in the access panel opening and slide the clip off the cabinet flange. See FigurePage SECTION 9. WIRING INFORMATION SERIES 10 - SCHEMATIC MAH4000 only SERIES 11 MAH4000 and MAH5500 SERIES 10 - TIMER CHART MAH4000 SERIES 11 - TIMER CHART MAH4000 & MAH5500A New Century Neptune Washer Service Manual Supplement 16008373-05MAYTAG TEARDOWN & WIRING INFORMATION DIAGNOSTIC/HELP CODE TABELSSECTION 4. ELECTRICAL COMPONENTS & TESTING Models covered in this manual supplement MAH5500B MAH7500A 16010486 MAH5500B CONTROL FACIA SPECIFICATIONSSECTION 1. GENERAL INFORMATION MAH7500 CONTROL FACIA General Flow Of A Complete Wash Cycle BASIC MACHINE OPERATION Wash Selections CYCLE SEQUENCESWash Time Tumble Tumbling Time Selected INPUT WATER TEMPERATUREExtra Heavy, Quick Rinse SECTION 2. WASHER CONTROLS OVERVIEW Features of MAH5500B LED WasherFeatures of MAH7500 LCD Washer BASIC CONTROL BOARD PHILOSOPHY FOR BOTH WASHERS SELECTIONS LED Washer SIGNAL MODEUSER INTERFACE FABRIC MODE Page 1-3 Extra Rinse Table DISPLAY CHARACTERISTICSOPTIONS MODE Door Locked LED INPUT MODIFICATIONS DEFINED PRESSURE SWITCH INPUTDOOR LOCK SWITCH INPUT TEMPERATURE SENSOR INPUT START/PAUSE INPUT DiagnosticsOUTPUT MODIFICATIONS DEFINED TACH INPUT CYCLE SEQUENCE DEFINITIONS Main Wash Target TemperaturesWATER VALVE OUTPUTS BLEACH DISPENSE REDISTRIBUTIONSUDS DETECTION MISCELLANEOUS DOOR LOCK PHILOSOPHYDOOR LOCK OPERATION MAH7500A POWER LOSS/FAILURESPECIAL FEATURES ADVERTISING MODE LCD Washer SERVICE MODELED Washer 2-10 LED WASHER Accessing Service ModeSERVICE MODE TABLE LED Washer SPECIAL TESTS Speed Range QUICK SERVICE CYCLE2-12 Displayed HELP CODES Accessing The Help CodesBOARD INPUT TEST BOARD OUTPUT TEST Accessing Diagnostic Codes DIAGNOSTIC CODESSection 5 DIAGNOSTIC/HELP CODE TABLES Clearing Diagnostic Code List LCD WASHER ACCESSING SERVICE MODEService Tests User Interface Tests Service Cycle During a cycle2-16 Note This selection is valid only if a cycle is running 2-17 Clear diagnostic codes Clear the entire list of diagnostic codes DIAGNOSTIC/HELP CODESexit diagnostic/help codes Return to SYSTEM CHECK Help Section 3 DIAGNOSTIC/HELP CODE TABLESHELP CODES LISTING Trigger Trigger HelpDescription Action to be Taken Trigger Description DIAGNOSTIC CODES LISTINGDiag Trigger Diag Trigger GENERAL COMPONENT - EXPLODED VIEW Component Identification & Location Glossary of Terms Spin Speed - This is the speed of the washer spinner during extraction 3-10 Grounded Components SECTION 4. ELECTRICAL COMPONENTS & TESTINGELECTRICAL TESTS Water Valve Test Machine Control Board Output Test INPUT/OUTPUT VOLTAGES LCD Washer INPUT/OUTPUT VOLTAGES LED Washer Membrane 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 Check MOTOR CONTROL BOARD Motor Control AccessDRIVE MOTOR Drip Shield Removal Machine Control Board Output Test Motor PhasesMotor Drive System Test Motor & Motor Control Test HEATER ASSEMBLY Heater Will Not Turn On User Selections Thermistor Temperature ChartHeating Targets Using Main Wash Tempering MICROPROCESSOR BOARD REMOVAL SECTION 5. TEARDOWN & WIRING INFORMATIONCONSOLE REMOVAL LCD MODEL CABINET ASSEMBLY CONSOLE COVER PLUGDOOR LATCH HOOP DOOR LOCK MECHANISM PRESSURE SWITCH REAR ACCESS PANELRemoval 1. Discontinue power and water to the machine WATER SYSTEM COMPONENTS REINSTALLATION PUMP ASSEMBLYHEATER ASSEMBLY REMOVAL Thermistor Removal SUMP COVER WIRING INFORMATION MAH5500B MAH7500 Customer Service 240 Edwards Street, S.E Cleveland, Tennessee Maytag Appliances Sales Company