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MAH3000
service manual
Maytag Corporation, Water Carrying Components, 16008373-01
Models:
MAH3000
1
65
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Troubleshooting
Specifications
Display Characteristics
Install
Code list
Electrical Schematics
End-Of-Cycle Signal Input
Timer Inputs
Wire Colors
Diagnostic
Page 65
Image 65
16008373-01
SECTION 6. WATER CARRYING COMPONENTS
6-7
© 1998 Maytag Corporation
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Contents
Customer Service
Service Manual
Washer
16010061
USE ONLY GENUINE MAYTAG APPROVED FACTORY REPLACEMENT COMPONENTS
SAFETY PRECAUTIONS
MAH3000
INTRODUCTION
Models covered in this manual
Maytag Appliances Sales Company 240 Edwards Street, S.E Cleveland, TN
GENERAL
C O N T E N T S
ASSEMBLY
SECTION
CABINET ASSEMBLY
DIAGNOSTIC
Displacement
MOTOR
OUTER
MACHINE
Checkpoints for proper installation
PRE-INSTALLATION REQUIREMENTS
UNCRATING INSTRUCTIONS
NOTE Proper installation is the responsibil- ity of the purchaser
INSTALLATION
CAUTION Do not cut or remove the ground- ing prong from this plug
GROUNDING POLARITY CHECKS
USE OF ADAPTERS IS NOT RECOMMENDED
SPECIFICATIONS
Prior To Series
WASHER CONTROLS
Series 17 & Later
INPUT DEFINITIONS
DOOR LOCK SWITCH INPUT
END-OF-CYCLE SIGNAL INPUT
Definitions
TIMER INPUTS
START/STOP INPUT
See Push-To-Start/Line Relay Operation
END-OF-CYCLE SIGNAL OUTPUT
OUTPUT DEFINITIONS
See Timer Input Charts
TIMER MOTOR OUTPUT
WATER VALVE OUTPUTS
TORQUE OUTPUT
Vcc REFERENCE VOLTAGE OUTPUT
1-10
CYCLE SEQUENCE DEFINITIONS
Timer Motor Output and Section 2 Timer Input Chart
BLEACH DISPENSE
Door Lock/Spin Control
MISCELLANEOUS Door Latch Switch Monitoring
Redistribution
1-11
1-12
Push-To-Start Relay Operation
STARTING THE WASHER
STOPPING THE WASHER
Main Wash Time/Total Cycle Time - Minutes See Notes
CYCLE REVIEW
1-13
Diagnosis - Clothes Wet at End of Spin
1-14
GENERAL COMPONENT EXPLODED VIEW
ELECTRICAL TEST EQUIPMENT
SECTION 2. ELECTRICAL COMPONENTS & TESTING
Description
Part Number
G r o u n d e d C o m p o n e n t s
ELECTRICAL TESTS
Voltage Checks
Water Valve Test
Timer Input Charts
Timer & Console Switches
SECTION 2. ELECTRICAL COMPONENTS & TESTING
T C B
Not Asserted
Key 0 = Input Signal
1= Input
t i m e r
Machine Control
M A C HIN E
Motor Harness Connector
DRIVE MOTOR
MOTOR CONTROL BOARD
Motor & Motor Control Test
Motor Phase Test
1 . Disconnect power to the washer prior to testing
Motor Windings Check
1 . 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 k
PHASE
Tachometer Circuit Diagnostics
WIRE COLORS
RESULT/SOLUTION
Wire Checks
UNBALANCE CONTROL SYSTEM
Tachometer
Voltage Found
Strut Displacement Switch
Tub Displacement Switch
Testing the Tub Displacement Switch 1 . Disconnect power to the unit
Testing the Strut Displacement Switch
Cabinet Vibration Absorber
Inertial Unbalance Switch
Cabinet Vibration Sensor
Testing the Inertial Unbalance Switch
2 - 1
Shuts OFF When Push-To-Start Button Re- leased
SECTION 3. TROUBLESHOOTING
Start Line Relay Operation
Runs For Five Seconds Then Shuts OFF
ContinuesTo Tumble After The Wash Cycle Is Finished
Tumbles Only
Third Rinse Cycle Is Always Cold
Temperature Inputs
“Thumping” Noise In Spin
Door Leaks
Ticking or Knocking 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
SECTION 3. TROUBLESHOOTING
T R O U B L E S H O O T I N G
1998 Maytag Corporation
1 6 0 0 8 3 7 3
SECTION 3. TROUBLESHOOTING 3
T R O U B L E S H O O T I N G
1998 Maytag Corporation
1 6 0 0 8 3 7 3 - 0
SECTION 3. TROUBLESHOOTING
T R O U B L E S H O O T I N G
1998 Maytag Corporation
1 6 0 0 8 3 7 3 - 0
SECTION 3. TROUBLESHOOTING 3
3 - 1
SECTION 3. TROUBLESHOOTING 3 - 1
SECTION 3. TROUBLESHOOTING
SECTION 3. TROUBLESHOOTING 3 - 1
indicators of the Quick Wash and Regular wash
Energy Usage
MISCELLANEOUS INFORMATION
Washer
Wattages
R E M O V A L
SECTION 4. CONSOLE
Disconnect power to the unit
R E P L A C E M E N T
VERTICAL SWITCHES Push Button
HORIZONTAL SWITCHES Push-to-Start
TIMER REMOVAL
1 6 0 0 8 3 7 3 - 0
DOOR ASSEMBLY & HINGES
SECTION 5. CABINET ASSEMBLY
DISASSEMBLY
R E M O V A L
Door Latch Hoop
Cabinet Vibration Absorber
FRONT PANEL
Disconnect power to the unit
1. Remove the front panel See Front Panel Removal
TOP COVER
DOOR LOCK MECHANISM
REMOVAL
FRONT SHROUD ASSEMBLY
Troubleshooting
See Front Panel & Top Cover
Hinge Removal
CABINET ASSEMBLY w/REAR ACCESS PANEL
16008373-01
WATER VALVE
SECTION 6. WATER-CARRYING COMPONENTS
REAR REMOVAL
FRONT REMOVAL
AIR DOME HOSE
WATER LEVEL PRESSURE SWITCH
REMOVAL FROM CONSOLE
REMOVAL FROM OUTER TUB
NOTE Using soap and water may lead to a potential leak
DISPENSER ASSEMBLY
REPLACEMENT/ROUTING
FRONT WATER FLUME INJECTOR
PUMP ASSEMBLY
5. Disconnect the hoses attached to the dis- penser assembly
procedure is not followed properly
CLEANING THE PUMP
Pump Accessory Kit
1. Depress the locking tab on the face of the pump housing
7. Installation is complete
5. Reverse the previous steps for replacement
DRAIN HOSE
16008373-01
BAFFLES
DOOR BOOT
SECTION 7. OUTER TUB & SPINNER ASSEMBLY
Front Shroud Removal
REPLACEMENT
OUTER TUB COVER
2. Stretch the rear lip of the door boot onto the tub cover
Shroud
SPIN BASKET ASSEMBLY w/BALANCE RING
Figure7-6
DRIVE PULLEY
1. Slide pulley on shaft
Profile Washer Spinner Support Washer Locking Nut
3. Remove the drive pulley See Pulley Removal
SPINNER TUB SUPPORT
7. Remove the shaft seal Figure
1. Reverse the previous steps
Figure7-9
SEAL SYSTEM
COUNTER WEIGHTS
OUTER TUB ASSEMBLY
BEARINGS
REMOVAL OF UPPER WEIGHT 1. Disconnect power to the unit
Strut Displacement Switch
STRUT ASSEMBLY
INERTIAL UNBALANCE SWITCH
3. Remove the wires to the switch
TUB DISPLACEMENT SWITCH
16008373-01
DRIVE BELT
SECTION 8. MOTOR DRIVE SYSTEM
DRIVE MOTOR
R E M O V A L
Console Removal
MACHINE CONTROL
R e m o v a l
MOTOR CONTROL
1 6 0 0 8 3 7 3 - 0
Prior to Series
SECTION 9. ELECTRICAL SCHEMATICS & TIMER I N F O R M A T I O N
ELECTRICAL SCHEMATICS
SECTION
TIMER CHART - Prior to Series
ELECTRICAL SCHEMATIC - Series
TIMER CHART - Series
ELECTRICAL SCHEMATICS
ELECTRICAL SCHEMATIC - Series
SECTION
1998 Maytag Corporation
ELECTRICAL SCHEMATICS
TIMER CHART - Series
SECTION
1998 Maytag Corporation
ELECTRICAL SCHEMATICS
N O T E S
SPECIFICATIONS
CONTENTS
DISPENSER ASSEMBLY
WIRING INFORMATION
SECTION 1. MAH4000/MAH5500A CONTROL FACIA SECTION 2. SPECIFICATIONS
SECTION 4. WASHER CONTROLS OVERVIEW
SECTION 3. BASIC MACHINE OPERATION
Series 10 MAH4000 only
Series 11 & Later
SECTION 5. CYCLE REVIEW
All Wash Time/Total Wash Cycle
Cycle Times
Non-Max
Cotton/Sturdy
General overview of Stain Cycle
Stain Cycle
The following is an example of a Stain Cycle
Suds detection during stain cycle
Component Identification & Location
SECTION 6. GENERAL COMPONENT - EXPLODED VIEW
SECTION 7. ELECTRICAL INFORMATION
vice repair procedures
electrical power to the unit
1. Discontinue power and water to the
SECTION 8. WATER CARRYING COMPONENTS
See Figure
1. Disconnect power and water to the machine
OPERATION
NOTE Indicator mark on hose for reinstallation
Removal 1. Disconnect power and water to the washer
3. Locate the rear mounting clip on the detergent hose in the access panel opening and slide the clip off the cabinet flange. See Figure
See Figure 8-11
Page
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
MAYTAG
New Century Neptune Washer Service Manual Supplement
16008373-05
SECTION 4. ELECTRICAL COMPONENTS & TESTING
DIAGNOSTIC/HELP CODE TABELS
TEARDOWN & WIRING INFORMATION
Models covered in this manual supplement MAH5500B MAH7500A
2001 Maytag Appliances Sales Company
SECTION 1. GENERAL INFORMATION
SPECIFICATIONS
MAH5500B CONTROL FACIA
MAH7500 CONTROL FACIA
BASIC MACHINE OPERATION
General Flow Of A Complete Wash Cycle
Wash Time Tumble
CYCLE SEQUENCES
Wash Selections
Tumbling Time
Extra Heavy, Quick
INPUT WATER TEMPERATURE
Selected
Rinse
Features of MAH7500 LCD Washer
Features of MAH5500B LED Washer
SECTION 2. WASHER CONTROLS OVERVIEW
BASIC CONTROL BOARD PHILOSOPHY FOR BOTH WASHERS
USER INTERFACE
SIGNAL MODE
SELECTIONS LED Washer
FABRIC MODE
OPTIONS MODE
DISPLAY CHARACTERISTICS
Page 1-3 Extra Rinse Table
Door Locked LED
DOOR LOCK SWITCH INPUT
PRESSURE SWITCH INPUT
INPUT MODIFICATIONS DEFINED
TEMPERATURE SENSOR INPUT
OUTPUT MODIFICATIONS DEFINED
Diagnostics
START/PAUSE INPUT
TACH INPUT
WATER VALVE OUTPUTS
CYCLE SEQUENCE DEFINITIONS
Main Wash Target Temperatures
SUDS DETECTION
BLEACH DISPENSE
REDISTRIBUTION
DOOR LOCK OPERATION
MISCELLANEOUS
DOOR LOCK PHILOSOPHY
SPECIAL FEATURES
POWER LOSS/FAILURE
MAH7500A
ADVERTISING MODE
LED Washer
SERVICE MODE
LCD Washer
2-10
SERVICE MODE TABLE LED Washer
Accessing Service Mode
LED WASHER
SPECIAL TESTS
2-12
QUICK SERVICE CYCLE
Speed Range
Displayed
BOARD INPUT TEST
Accessing The Help Codes
HELP CODES
BOARD OUTPUT TEST
Section 5 DIAGNOSTIC/HELP CODE TABLES
DIAGNOSTIC CODES
Accessing Diagnostic Codes
Clearing Diagnostic Code List
Service Tests
ACCESSING SERVICE MODE
LCD WASHER
User Interface Tests
2-16
Service Cycle
During a cycle
2-17
Note This selection is valid only if a cycle is running
exit diagnostic/help codes Return to
DIAGNOSTIC/HELP CODES
Clear diagnostic codes Clear the entire list of diagnostic codes
SYSTEM CHECK
HELP CODES LISTING
Section 3 DIAGNOSTIC/HELP CODE TABLES
Help
Trigger
Description
Help
Trigger
Action to be Taken
Description
Diag
DIAGNOSTIC CODES LISTING
Description
Trigger
Diag
Description
Component Identification & Location
GENERAL COMPONENT - EXPLODED VIEW
Glossary of Terms
Spin Speed - This is the speed of the washer spinner during extraction
3-10
ELECTRICAL TESTS
SECTION 4. ELECTRICAL COMPONENTS & TESTING
Grounded Components
Water Valve Test
Board Output Test
Machine Control
INPUT/OUTPUT VOLTAGES LED Washer
INPUT/OUTPUT VOLTAGES LCD Washer
On the MAH5500B washer you can perform the Membrane Pad Check with the control console. See Section 2 Accessing Service Mode Membrane Pad Check
Membrane Pad Checks
DRIVE MOTOR
Motor Control Access
MOTOR CONTROL BOARD
Drip Shield Removal
Motor Drive System Test
Motor Phases
Machine Control Board Output Test
Motor & Motor Control Test
Heater Will Not Turn On
HEATER ASSEMBLY
Heating Targets Using
Thermistor Temperature Chart
User Selections
Main Wash Tempering
CONSOLE REMOVAL
SECTION 5. TEARDOWN & WIRING INFORMATION
MICROPROCESSOR BOARD REMOVAL
LCD MODEL
DOOR LATCH HOOP
CABINET ASSEMBLY
CONSOLE COVER PLUG
DOOR LOCK MECHANISM
Removal 1. Discontinue power and water to the machine
REAR ACCESS PANEL
PRESSURE SWITCH
WATER SYSTEM COMPONENTS
HEATER ASSEMBLY
PUMP ASSEMBLY
REINSTALLATION
REMOVAL
SUMP COVER
Thermistor Removal
MAH5500B
WIRING INFORMATION
MAH7500
Maytag Appliances Sales Company
Customer Service 240 Edwards Street, S.E Cleveland, Tennessee
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