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MAH3000 service manual SERIES 10 - TIMER CHART MAH4000, 16010199, Revised 7/00
Models:
MAH3000
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Troubleshooting
Specifications
Display Characteristics
Install
Code list
See Timer Input Charts
Use Only Genuine Maytag Approved Factory Replacement Components
Wire Colors
Diagnostic
Cabinet Assembly
Page 104
Image 104
SERIES 10 - TIMER CHART (MAH4000)
16010199
(16008373-03)
17
Revised 7/00
©2000 Maytag Appliances Sales Company
Page 103
Page 105
Page 104
Image 104
Page 103
Page 105
Contents
Service Manual
Customer Service
Washer
16010061
SAFETY PRECAUTIONS
USE ONLY GENUINE MAYTAG APPROVED FACTORY REPLACEMENT COMPONENTS
INTRODUCTION
MAH3000
Models covered in this manual
Maytag Appliances Sales Company 240 Edwards Street, S.E Cleveland, TN
C O N T E N T S
GENERAL
SECTION
ASSEMBLY
CABINET ASSEMBLY
DIAGNOSTIC
MOTOR
Displacement
OUTER
MACHINE
PRE-INSTALLATION REQUIREMENTS
Checkpoints for proper installation
UNCRATING INSTRUCTIONS
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
INPUT DEFINITIONS
Series 17 & Later
DOOR LOCK SWITCH INPUT
END-OF-CYCLE SIGNAL INPUT
TEMPERATURE SENSOR INPUT
TIMER INPUTS
WATER TEMPERATURE INPUTS
Definitions
OUTPUT DEFINITIONS
END-OF-CYCLE SIGNAL OUTPUT
See Timer Input Charts
TIMER MOTOR OUTPUT
WATER VALVE OUTPUTS
TORQUE OUTPUT
Vcc REFERENCE VOLTAGE OUTPUT
CYCLE SEQUENCE DEFINITIONS
1-10
DELAY
Timer Motor Output and Section 2 Timer Input Chart
MISCELLANEOUS Door Latch Switch Monitoring
Door Lock/Spin Control
Redistribution
1-11
Push-To-Start Relay Operation
1-12
STARTING THE WASHER
STOPPING THE WASHER
CYCLE REVIEW
Main Wash Time/Total Cycle Time - Minutes See Notes
1-13
Diagnosis - Clothes Wet at End of Spin
GENERAL COMPONENT EXPLODED VIEW
1-14
SECTION 1. GENERAL INFORMATION
1998 Maytag Corporation
SECTION 2. ELECTRICAL COMPONENTS & TESTING
ELECTRICAL TEST EQUIPMENT
Description
Part Number
ELECTRICAL TESTS
G r o u n d e d C o m p o n e n t s
Voltage Checks
Water Valve Test
Timer & Console Switches
Timer Input Charts
SECTION 2. ELECTRICAL COMPONENTS & TESTING
T C B
Key 0 = Input Signal
Not Asserted
1= Input
t i m e r
Machine Control
M A C HIN E
Motor Harness Connector
DRIVE MOTOR
MOTOR CONTROL BOARD
Motor Phase Test
Motor & Motor Control Test
Motor Windings Check
1 . Disconnect power to the washer prior to testing
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
Tachometer Circuit Diagnostics
PHASE
WIRE COLORS
RESULT/SOLUTION
UNBALANCE CONTROL SYSTEM
Wire Checks
Tachometer
Voltage Found
Tub Displacement Switch
Strut Displacement Switch
Testing the Tub Displacement Switch 1 . Disconnect power to the unit
Testing the Strut Displacement Switch
Inertial Unbalance Switch
Cabinet Vibration Absorber
Cabinet Vibration Sensor
Testing the Inertial Unbalance Switch
SECTION 2. ELECTRICAL COMPONENTS & TESTING
2 - 1
1998 Maytag Corporation
1 6 0 0 8 3 7 3 - 0
SECTION 3. TROUBLESHOOTING
Shuts OFF When Push-To-Start Button Re- leased
Start Line Relay Operation
Runs For Five Seconds Then Shuts OFF
Temperature Inputs
Tumbles Only
ContinuesTo Tumble After The Wash Cycle Is Finished
Third Rinse Cycle Is Always Cold
Door Leaks
“Thumping” Noise In Spin
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
1998 Maytag Corporation
1 6 0 0 8 3 7 3 - 0
T R O U B L E S H O O T I N G
SECTION 3. TROUBLESHOOTING 3
1998 Maytag Corporation
1 6 0 0 8 3 7 3 - 0
T R O U B L E S H O O T I N G
SECTION 3. TROUBLESHOOTING
1998 Maytag Corporation
1 6 0 0 8 3 7 3 - 0
T R O U B L E S H O O T I N G
SECTION 3. TROUBLESHOOTING 3
1998 Maytag Corporation
1 6 0 0 8 3 7 3 - 0
T R O U B L E S H O O T I N G
SECTION 3. TROUBLESHOOTING
1998 Maytag Corporation
1 6 0 0 8 3 7 3 - 0
T R O U B L E S H O O T I N G
SECTION 3. TROUBLESHOOTING 3
1998 Maytag Corporation
1 6 0 0 8 3 7 3 - 0
3 - 1
T R O U B L E S H O O T I N G
SECTION 3. TROUBLESHOOTING
1998 Maytag Corporation
T R O U B L E S H O O T I N G
SECTION 3. TROUBLESHOOTING 3 - 1
1998 Maytag Corporation
1 6 0 0 8 3 7 3 - 0
T R O U B L E S H O O T I N G
SECTION 3. TROUBLESHOOTING
3 - 1
1998 Maytag Corporation
T R O U B L E S H O O T I N G
indicators of the Quick Wash and Regular wash
SECTION 3. TROUBLESHOOTING 3 - 1
1998 Maytag Corporation
MISCELLANEOUS INFORMATION
Energy Usage
Washer
Wattages
R E M O V A L
SECTION 4. CONSOLE
Disconnect power to the unit
VERTICAL SWITCHES Push Button
HORIZONTAL SWITCHES Push-to-Start
R E M O V A L
R E P L A C E M E N T
R E P L A C E M E N T
TIMER REMOVAL
1 . Disconnect power to the unit
1 6 0 0 8 3 7 3 - 0
1998 Maytag Corporation
SECTION 4. CONSOLE
SECTION 5. CABINET ASSEMBLY
DOOR ASSEMBLY & HINGES
DISASSEMBLY
R E M O V A L
Cabinet Vibration Absorber
Door Latch Hoop
FRONT PANEL
Disconnect power to the unit
TOP COVER
DOOR LOCK MECHANISM
R E M O V A L
1. Remove the front panel See Front Panel Removal
FRONT SHROUD ASSEMBLY
REMOVAL
Troubleshooting
REMOVAL
R E M O V A L
CABINET ASSEMBLY w/REAR ACCESS PANEL
Hinge Removal
16008373-01
SECTION 5. CABINET ASSEMBLY
1998 Maytag Corporation
SECTION 6. WATER-CARRYING COMPONENTS
WATER VALVE
REAR REMOVAL
FRONT REMOVAL
WATER LEVEL PRESSURE SWITCH
AIR DOME HOSE
REMOVAL FROM CONSOLE
REMOVAL FROM OUTER TUB
DISPENSER ASSEMBLY
REPLACEMENT/ROUTING
NOTE Using soap and water may lead to a potential leak
1. Disconnect power to the unit
PUMP ASSEMBLY
FRONT WATER FLUME INJECTOR
5. Disconnect the hoses attached to the dis- penser assembly
procedure is not followed properly
Pump Accessory Kit
CLEANING THE PUMP
1. Depress the locking tab on the face of the pump housing
1. Disconnect power to the unit
5. Reverse the previous steps for replacement
DRAIN HOSE
R E M O V A L 1. Disconnect power to the unit
16008373-01
1998 Maytag Corporation
SECTION 6. WATER CARRYING COMPONENTS
DOOR BOOT
BAFFLES
SECTION 7. OUTER TUB & SPINNER ASSEMBLY
R E M O V A L 1. Disconnect power to the unit
OUTER TUB COVER
REPLACEMENT
2. Stretch the rear lip of the door boot onto the tub cover
1. Disconnect power to the unit
SPIN BASKET ASSEMBLY w/BALANCE RING
R E M O V A L 1. Disconnect power to the unit
DRIVE PULLEY
1. Disconnect power to the unit
REPLACEMENT
Figure7-6
SPINNER TUB SUPPORT
Disconnect power to the unit
REPLACEMENT
R E M O V A L
Figure7-9
SEAL SYSTEM
R E M O V A L 1. Disconnect power to the unit
OUTER TUB ASSEMBLY
COUNTER WEIGHTS
BEARINGS
REMOVAL OF UPPER WEIGHT 1. Disconnect power to the unit
STRUT ASSEMBLY
Strut Displacement Switch
INERTIAL UNBALANCE SWITCH
1. Disconnect power to the unit
TUB DISPLACEMENT SWITCH
1. Disconnect power to the unit
1. Disconnect power to the unit
REMOVAL
16008373-01
SECTION 7. OUTER TUB & SPINNER ASSEMBLY
1998 Maytag Corporation
SECTION 8. MOTOR DRIVE SYSTEM
DRIVE BELT
DRIVE MOTOR
R E M O V A L
MACHINE CONTROL
R E M O V A L 1 . Disconnect power to the unit
R E P L A C E M E N T
Console Removal
MOTOR CONTROL
Disconnect power to the unit
R E M O V A L
R e m o v a l
1 6 0 0 8 3 7 3 - 0
SECTION 8 . MOTOR DRIVE SYSYTEM
1998 Maytag Corporation
SECTION 9. ELECTRICAL SCHEMATICS & TIMER I N F O R M A T I O N
Prior to Series
ELECTRICAL SCHEMATICS
SECTION
TIMER CHART - Prior to Series
ELECTRICAL SCHEMATICS
SECTION
1998 Maytag Corporation
ELECTRICAL SCHEMATIC - Series
ELECTRICAL SCHEMATICS
SECTION
1998 Maytag Corporation
TIMER CHART - Series
ELECTRICAL SCHEMATICS
SECTION
1998 Maytag Corporation
ELECTRICAL SCHEMATIC - Series
ELECTRICAL SCHEMATICS
SECTION
1998 Maytag Corporation
TIMER CHART - Series
ELECTRICAL SCHEMATICS
SECTION
1998 Maytag Corporation
ELECTRICAL SCHEMATIC - Series
ELECTRICAL SCHEMATICS
SECTION
1998 Maytag Corporation
N O T E S
ELECTRICAL SCHEMATICS
SECTION
1998 Maytag Corporation
CONTENTS
SPECIFICATIONS
DISPENSER ASSEMBLY
WIRING INFORMATION
SECTION 1. MAH4000/MAH5500A CONTROL FACIA SECTION 2. SPECIFICATIONS
SECTION 3. BASIC MACHINE OPERATION
SECTION 4. WASHER CONTROLS OVERVIEW
Series 10 MAH4000 only
Series 11 & Later
SECTION 5. CYCLE REVIEW
Cycle Times
All Wash Time/Total Wash Cycle
Non-Max
Cotton/Sturdy
Stain Cycle
General overview of Stain Cycle
The following is an example of a Stain Cycle
Suds detection during stain cycle
SECTION 6. GENERAL COMPONENT - EXPLODED VIEW
Component Identification & Location
16010199
Revised 7/00
SECTION 7. ELECTRICAL INFORMATION
electrical power to the unit
vice repair procedures
1. Discontinue power and water to the
SECTION 8. WATER CARRYING COMPONENTS
1. Disconnect power and water to the machine
OPERATION
See Figure
RECIRCULATION PUMP
DETERGENT HOSE
Removal 1. Disconnect power and water to the washer
NOTE Indicator mark on hose for reinstallation
See Figure
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 Figure
Page
SECTION 9. WIRING INFORMATION
16010199
Revised 7/00
2000 Maytag Appliances Sales Company
SERIES 10 - SCHEMATIC MAH4000 only
16010199
Revised 7/00
2000 Maytag Appliances Sales Company
SERIES 11 MAH4000 and MAH5500
16010199
Revised 7/00
2000 Maytag Appliances Sales Company
SERIES 10 - TIMER CHART MAH4000
16010199
Revised 7/00
2000 Maytag Appliances Sales Company
SERIES 11 - TIMER CHART MAH4000 & MAH5500A
16010199
Revised 7/00
2000 Maytag Appliances Sales Company
MAYTAG
New Century Neptune Washer Service Manual Supplement
16008373-05
DIAGNOSTIC/HELP CODE TABELS
SECTION 4. ELECTRICAL COMPONENTS & TESTING
TEARDOWN & WIRING INFORMATION
Models covered in this manual supplement MAH5500B MAH7500A
2001 Maytag Appliances Sales Company
16010486
Revised 02/01
SPECIFICATIONS
SECTION 1. GENERAL INFORMATION
MAH5500B CONTROL FACIA
MAH7500 CONTROL FACIA
General Flow Of A Complete Wash Cycle
BASIC MACHINE OPERATION
CYCLE SEQUENCES
Wash Time Tumble
Wash Selections
Tumbling Time
INPUT WATER TEMPERATURE
Temperature
temperature
Extra Heavy, Quick
Features of MAH5500B LED Washer
Features of MAH7500 LCD Washer
SECTION 2. WASHER CONTROLS OVERVIEW
BASIC CONTROL BOARD PHILOSOPHY FOR BOTH WASHERS
TEMPERATURE MODE
delay wash key will be locked out
SIGNAL MODE
DELAY MODE
DISPLAY CHARACTERISTICS
OPTIONS MODE
Page 1-3 Extra Rinse Table
Door Locked LED
PRESSURE SWITCH INPUT
TEMPERATURE SENSOR INPUT
DOOR LOCK SWITCH INPUT
INPUT MODIFICATIONS DEFINED
Diagnostics
OUTPUT MODIFICATIONS DEFINED
START/PAUSE INPUT
TACH INPUT
WATER VALVE OUTPUTS
Main Wash Target Temperatures
CYCLE SEQUENCE DEFINITIONS
SUDS DETECTION
BLEACH DISPENSE
REDISTRIBUTION
DOOR LOCK OPERATION
MISCELLANEOUS
DOOR LOCK PHILOSOPHY
POWER LOSS/FAILURE
SPECIAL FEATURES
MAH7500A
ADVERTISING MODE
SERVICE MODE
LED Washer
LCD Washer
2-10
Accessing Service Mode
SERVICE MODE TABLE LED Washer
LED WASHER
SPECIAL TESTS
QUICK SERVICE CYCLE
2-12
Speed Range
Displayed
Accessing The Help Codes
BOARD INPUT TEST
HELP CODES
BOARD OUTPUT TEST
DIAGNOSTIC CODES
Section 5 DIAGNOSTIC/HELP CODE TABLES
Accessing Diagnostic Codes
Clearing Diagnostic Code List
ACCESSING SERVICE MODE
Service Tests
LCD WASHER
User Interface Tests
2-16
Service Cycle
During a cycle
Note This selection is valid only if a cycle is running
2-17
DIAGNOSTIC/HELP CODES
exit diagnostic/help codes Return to
Clear diagnostic codes Clear the entire list of diagnostic codes
SYSTEM CHECK
Section 3 DIAGNOSTIC/HELP CODE TABLES
HELP CODES LISTING
Help
Description
Help
Description
Trigger
Action to be Taken
Help
Description
Trigger
Action to be Taken
DIAGNOSTIC CODES LISTING
Diag
Description
Trigger
Diag
Description
Trigger
Action to be Taken
Diag
Description
Trigger
Action to be Taken
GENERAL COMPONENT - EXPLODED VIEW
Component Identification & Location
Section 3. Teardown & Wiring Information
16010486
Glossary of Terms
Spin Speed - This is the speed of the washer spinner during extraction
3-10
Section 3. Teardown & Wiring Information
16010486
Revised 2/01
SECTION 4. ELECTRICAL COMPONENTS & TESTING
ELECTRICAL TESTS
Grounded Components
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
LCD Washer
LED Washer
Motor Control Access
DRIVE MOTOR
MOTOR CONTROL BOARD
Drip Shield Removal
Motor Phases
Motor Drive System Test
Machine Control Board Output Test
Motor & Motor Control Test
HEATER ASSEMBLY
Heater Will Not Turn On
Thermistor Temperature Chart
Heating Targets Using
User Selections
Main Wash Tempering
SECTION 5. TEARDOWN & WIRING INFORMATION
CONSOLE REMOVAL
MICROPROCESSOR BOARD REMOVAL
LCD MODEL
DOOR LATCH HOOP
CABINET ASSEMBLY
CONSOLE COVER PLUG
DOOR LOCK MECHANISM
Removal
REAR ACCESS PANEL
Removal 1. Discontinue power and water to the machine
PRESSURE SWITCH
WATER SYSTEM COMPONENTS
PUMP ASSEMBLY
HEATER ASSEMBLY
REINSTALLATION
REMOVAL
REMOVAL
Thermistor Removal
SUMP COVER
WIRING INFORMATION
MAH5500B
Section 5. Teardown & Wiring Information
16010486
MAH7500
Section 5. Teardown & Wiring Information
16010486
Revised 10/00 2001 Maytag Appliances Sales Company
Customer Service 240 Edwards Street, S.E Cleveland, Tennessee
Maytag Appliances Sales Company