Maytag MAH5500BWW Service Manual

Maytag MAH5500BWW - Neptune Series 27'' Front-Load Washer Manual

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  • Maytag MAH5500BWW | Service Manual - Page 1
    Customer Service TM Washer Service Manual 16010061 Compiled From 16008373, 16010199, 16010886 11/03
  • Maytag MAH5500BWW | Service Manual - Page 2
    This manual is to be used only by a Maytag Authorized Service Technician familiar with and knowledgeable of proper safety and servicing procedures and possessing high quality testing equipment associated with microwaves, gas, and electrical appliance repair. All individuals who attempt repairs by
  • Maytag MAH5500BWW | Service Manual - Page 3
    control system and internal components. Because the basic structure for all washers is the same, they will be covered generally without regard to model. Model(s) covered in this manual: MAH3000 For additional information on material covered in this manual, including safety issues, contact: Maytag
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    ...2-2 Voltage Checks ...2-2 Water Valve Test...2-2 Wax Motor Check/Door Lock Mechanism 2-2 Timer & Console Switches ...2-3 Timer Input Charts ...2-3 Machine Control...2-5 DRIVE MOTOR ...2-7 MOTOR CONTROL BOARD ...2-7 Motor & Motor Control Test ...2-8 Motor Phase Test ...2-8 Motor Windings Check
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    ...6-3 FRONT WATER FLUME INJECTOR...6-4 PUMP ASSEMBLY ...6-4 Pump Accessory ...6-5 DRAIN HOSE ...6-6 SECTION 7. OUTER TUB & SPINNER ASSEMBLY 7 - 1 B A F F L E S ...7 - 1 DOOR BOOT ...7 - 1 OUTER TUB COVER ...7-2 SPIN BASKET ASSEMBLY W/BALANCE RING 7-3 DRIVE PULLEY ...7-4 SPINNER TUB SUPPORT
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    COUNTER WEIGHTS ...7-7 STRUT ASSEMBLY ...7-8 Strut Displacement Switch ...7-8 INERTIAL UNBALANCE SWITCH...7-8 TUB DISPLACEMENT SWITCH ...7-9 SECTION 8. MOTOR DRIVE SYSTEM ...8 - 1 DRIVE BELT ...8 - 1 DRIVE MOTOR ...8 - 1 MACHINE CONTROL ...8-2 MOTOR CONTROL ...8-3 SECTION 9. ELECTRICAL SCHEMATICS
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    pump accessory kit, part number 22002136. • This unit is not equipped with a siphon break, and the drain hose must be elevated to a minimum height of 24". A 36" high standpipe is recommended. For all installations the drain hose must be supported by the drain hose strap on the back of the washer
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    machine for shipping purposes and to secure the power cord with the water inlet hoses the straps as close to the buckles washer slightly forward. Loosen rear leveling leg lock nuts. Tip washer back slightly to loosen front leveling leg lock nuts (Figure 1-3). Figure 1-3 16008373-01 © 1998 Maytag
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    . 7. Install gooseneck end of drain hose into drain standpipe. Be sure the connection is not airtight between the drain hose and standpipe. Standpipe must be at least 24" high. 36" height is recommended. 8. Connect inlet hoses to water supply using screen washers (found in the installation package
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    by a micropr ocessor motor contr ol board. Motor pulley ratio (motor to spinner RPM ) 14 to 1. Motor Input: During Wash Tumble foot inlet hoses w ith inlet washers and attaches to water valv e. Dr ain hose attaches to pump and w ill accomm odate 36" dr ain stand p i p e. Cabinet dimensions: 27"
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    in the washer, including the motor and motor control, user input switches, user indicator lights, the door latch and lock assembly, water valves, drain pump, unbalance switches, dispenser actuator wax motors, a pressure switch, and a tub light. The machine control has direct control of these
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    is indication the washer door is locked. The machine controller will not command the spinner to spin faster than 50 rpm when the input is not present prior to spin. END-OF-CYCLE SIGNAL INPUT The End-of-Cycle Signal Input is energized through a user input switch on the control panel. When this is
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    Circuit Diagnostics). If the machine control commands a motor speed and direction but does not sense a tach input signal within five seconds, it will disengage the line relay to stop the washer. This generally indicates a locked rotor or a malfunction in the motor control. If the machine control
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    Tumble increment, the machine control will wait for three minutes before energizing the Door Lock Wax Motor Output. This delay is not affected by water level. This output remains energized until the end of the cycle. If the washer is started with the timer set in a Prewash Drain, Bleach Dispense
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    The machine control counts the number of rinses during a normal wash cycle. In the first and second Rinse Tumble increments, the machine control will energize the Timer Motor Output as soon as the Pressure Switch Input is no longer energized, indicating that the water has reached the full level. In
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    increment at the end of the cycle, the machine control will tumble the washer until 50 seconds after the Door Lock Switch input is no longer energized. This allows time for the Door Lock Wax Motor to fully retract. At this time, the Door Lock Light Output (washers between Series 10 and 16 only) or
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    any setting. After that cycle completes, the user must open the door before the machine control will allow a third cycle to start. Door Lock/Spin Control control will energize the timer motor output until the timer inputs change so the washer can proceed with the cycle. At the end of spin sequence
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    washer (Black wire no. 27). MACHINE CONTROL BOARD LINE R EL AY NO COM INTERNAL LOGIC SWITCH 120 VAC POWER FROM MACHINE CONTROL BOARD 120 VAC LINE (W hen door is closed) GY 26 BK 27 PUSH TO START SWITCH 120 VAC Line To Timer & Motor Control Board RD 28 Figure 1-8 16008373-01 © 1998 Maytag
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    will vary based on water fill times, due to types of clothing loads, available water pressure and the time for the door lock system to retract at the end of the cycle. 3. The main wash time is affected significantly if the machine control detects an excessive amount of suds. The washer will go into
  • Maytag MAH5500BWW | Service Manual - Page 20
    GENERAL COMPONENT EXPLODED VIEW 16008373-01 © 1998 Maytag Corporation SECTION 1. GENERAL INFORMATION 1-14
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    required to service Maytag products depends largely upon the conditions you encounter. Locating a malfunction will often require the use of electrical testing equipment such as: Description Analog Test Meter Digital Test Meter Clamp-On Ammeter AC Voltage Sensor Part Number 20000005 20001001
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    ELECTRICAL TESTS Water Valve Test Warning - Always shut off electrical power to the unit before beginning any service repair procedures. Grounded Components When performing service diagnostics, replacements and repairs, always check to determine whether all ground wires linking panel and
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    resistance reading of the pump Description Connector Connector Ohms Pump Motor 14T 10B 18 Bleach Wax Motor 2B 10B 950-1100 Softener Wax Motor 2T 10B 950-1100 Timer Motor 10T 10B 5000 Timer Input Charts As stated previously, the machine control board receives inputs from the timer
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    in the machine control board specifically monitors the timer input circuits to determine where the timer is in all the wash cycles and will rapidly advance the timer to OPEN and break contacts in the timer. The timer is solely used as an off-board set of relay switches. Note: The timer motor is hard
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    Machine Control The machine control microprocessor board is located in the control console, mounted to the rear panel. The board receives input from the timer, door latch and lock switches, and unbalance and selector switches on the console. It also communicates with the motor control board to
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    N CTIO N M A C H IN E CON TROL BOARD T ERM IN A L/ W IRE M A C H IN E CON TROL BOARD T ERM IN A L/ W IRE V O L T P2/4 (OR 40) 24 VDC Not Inv o lved D o o r Lock - Sp in P3 (1) P3/7 (Y L 36) 24 VDC Not Inv o lved M otor Control & M a ch in e C o nt r o l P5 (W H11 Maytag Corporation 2-6
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    of motor phases that determines direction and rotational speed of the rotor (and shaft). The motor control board motor control to the machine control just prior to spin, the motor will ramp up for 5 seconds then stop. 16008373-01 SECTION 2. ELECTRICAL COMPONENTS & TESTING 2 - 7 © 1998 Maytag
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    , replace motor control/wire harness assembly complete and check motor windings for damage (See Drive Motor). Replace motor if necessary(Figure 2-6) . C. If fuse and semiconductors show no visible damage, perform the motor phase test. 8. Unplug the washer power cord and replace motor control board
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    from the motor control board. 4. Carefully lift the front end of the motor control board to disengage the rear locking tabs from the slots in the base. Slowly drag the motor control board, with motor harness attached, toward the front of the washer and place in front of the washer. 5. Remove the
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    Circuit Diagnostics The tachometer system of the motor is times. An optical sensor is mounted to one side of the shutter and monitors the "pickets" as they pass through the sensor. As the "pickets" pass through the sensor field, signals are generated and transmitted to the motor control board
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    If the machine control board does not receive an input signal from the motor control/tachometer circuit (JP4 connector), the motor speed will rapidly accelerate for 5 seconds then shut down. The machine control will sense a "locked rotor" condition and the motor will stop. If the motor control does
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    load. The washer will pause again for three (3) seconds, then start the distribution profile again. To redistribute the load, the machine tumbles the load motor. However, the machine is If not, replace the switch. the machine accelerates the front and close, the switch is good. If not, replace the
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    vibration caused by the clothes load at 800 rpm (See Section 5: Cabinet Assembly). Cabinet Vibration Sensor The cabinet vibration sensor is mounted to the lower left corner of the machine control board. This is a piezo-electric strip mounted to the machine control board. With a mass attached to
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    16008373-01 SECTION 2. ELECTRICAL COMPONENTS & TESTING © 1998 Maytag Corporation 2-14
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    the button of the door lock enable switch. If the machine control board sees the switch OPEN during the spin cycle, the machine control board will automatically shut the washer OFF. This is caused by a weak spring in the door lock wax motor. Replace the complete door lock mechanism. Shuts OFF During
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    door unlocks, even though the door is actually unlocked. Replace the door lock mechanism. Third Rinse Cycle Is Always Cold: If the user rotates the timer dial to the third or fourth rinse, the water will always be cold regardless of temperature selection. The machine control board counts the number
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    If the timer motor is energized for five minutes without the cycle inputs changing, the machine control board will drop the line voltage relay. Also, check the drive belt for a weak spot on the belt. Ussually felt on the backside of the belt as a "flat" spot. Replace the belt. RF (Radio Frequency
  • Maytag MAH5500BWW | Service Manual - Page 38
    TROUBLESHOOTING 16008373-01 © 1998 Maytag Corporation SECTION 3. TROUBLESHOOTING 3 - 4
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    TROUBLESHOOTING 16008373-01 © 1998 Maytag Corporation SECTION 3. TROUBLESHOOTING 3 - 5
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    TROUBLESHOOTING 16008373-01 © 1998 Maytag Corporation SECTION 3. TROUBLESHOOTING 3 - 6
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    TROUBLESHOOTING 16008373-01 © 1998 Maytag Corporation SECTION 3. TROUBLESHOOTING 3 - 7
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    TROUBLESHOOTING 16008373-01 © 1998 Maytag Corporation SECTION 3. TROUBLESHOOTING 3 - 8
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    TROUBLESHOOTING 16008373-01 © 1998 Maytag Corporation SECTION 3. TROUBLESHOOTING 3 - 9
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    TROUBLESHOOTING 16008373-01 © 1998 Maytag Corporation SECTION 3. TROUBLESHOOTING 3 - 1 0
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    TROUBLESHOOTING 16008373-01 © 1998 Maytag Corporation SECTION 3. TROUBLESHOOTING 3 - 1 1
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    TROUBLESHOOTING 16008373-01 © 1998 Maytag Corporation SECTION 3. TROUBLESHOOTING 3 - 1 2
  • Maytag MAH5500BWW | Service Manual - Page 47
    TROUBLESHOOTING Use a knife or scissors to cut across the + in the center of the dial and press the template over the timer shaft. Align the template with the OFF indicators of the Quick Wash and Regular wash on the facia. Press the timer knob onto the timer shaft. 16008373-01 © 1998 Maytag
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    Draining (No tumble) with water Draining (No tumble) no water Spinning (100 rpm) Spin Acceleration (100-200 rpm) Spinning (400 rpm) Spinning (850 rpm) Wattages: 10-15 50-70 110-120 140-150 45-50 30-35 85-90 130-150 160-170 400-410 16008373-01 © 1998 Maytag Corporation SECTION 3. TROUBLESHOOTING
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    the unit before beginning any service procedure. 5 . Push the bottom of the console toward the back panel to disengage the six locking feet from the top the locking feet into the slots in the top cover. Replace the three screws to attach console back to rear panel. © 1998 Maytag Corporation
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    locking tab on the switch to disengage it from the locking tab on the console. Pivot the switch from the console (Figure 4-6). REPLACEMENT REPLACEMENT and lock the switch into the lower part of Locking Tab Locking Tab Screwdriver Locking Tab Locking Tab Figure 4-5 Pivoting the Switch Body, Lock
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    the timer shaft by pulling the knob away from the face of the control console (Figure 4-7). REPLACEMENT 1 . Align the three tabs of the timer into the slots the locking tab can engage with the square hole in the console. 3. Replace mounting screw. Figure 4-7 3 . Disengage the console assembly from
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    16008373-01 © 1998 Maytag Corporation SECTION 4. CONSOLE 4 - 4
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    any service repair procedures. DOOR ASSEMBLY & HINGES The door assembly is reversible. It contains an inertial vibration damper comprised of a steel plate suspended with springs. The damper is designed to tune out excessive vibrations generated by the machine during the spin cycle. Replacement
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    proper position to align with the door lock mechanism when the door is closed. A plastic support is snapped into place over the latch hoop at add strength (Figure 5-2). Figure 5-3 4. To remove the front panel, open the door, twist the upper right and left panel extensions inward by pressing in on
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    Figure 5-5 16008373-01 Figure 5-6 Wax Motor Sliding Gear Rotating Gear Spring Gear Return Spring Accessory Cable Latch Axle Door Lock Switch Axle Spring Lamp Holder Door Switch Ramp Cover Latch Switch Holder Bulb © 1998 Maytag Corporation Figure 5-7 SECTION 5. CABINET ASSEMBLY 5 - 3
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    the front panel and raise the top cover to expose the front shroud assembly (See Front Panel & Top Cover). 2. With the door open, unsnap the boot gasket from around the inside perimeter of the door opening by pulling out on the sealing lip of the gasket (Figure 5-9). 16008373-01 © 1998 Maytag
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    the access panel gains access to the rear components of the washer (Figure 5-11). Figure 5-9 3. Remove the door (See Door Assembly and Hinge Removal). 4. Removal and replacement of the screws in the following order, as illustrated, is necessary to provide proper alignment of the parts. Failure to
  • Maytag MAH5500BWW | Service Manual - Page 58
    16008373-01 © 1998 Maytag Corporation SECTION 5. CABINET ASSEMBLY 5 - 6
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    before beginning any service repair procedures. WATER VALVE The water valve is accessible from the front or rear of the machine. REAR REMOVAL 1. Disconnect power to the unit. 2. Shut off the water to the inlet hoses and remove the hoses from the water valve connections of the washer. 3. Remove the
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    panel of the console. The air dome hose is inserted into the lower end of the mounting bracket (Figure 6-2). The nipple of the pressure switch is inserted into the end of the air dome hose which is secured by the lower mounting bracket. Bracket Pressure Switch A) Slide Switch Off 7. To replace
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    clip on the outside ridge of the air dome hose. The dispenser assembly is located in the left hand side of the top cover. Three bays dispense the fabric softener, bleach and detergent into the wash load. A double wax motor mechanism directs the flow of water into each specific bay when required for
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    drain hoses prior to loosening the hose clamps. This will catch any residual water left in the hoses and sump area. 3. Remove the hose clamps and hoses from the pump. 4. Remove the wiring harness from the pump motor terminals. 5. Rotate the pump assembly in a counterclockwise direction. The support
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    CLEANING THE PUMP Figure 6-7 The pump assembly can also be disassembled without removing the hoses from the pump (See Figure 6-6). 1. Depress the locking tab on the face of the pump housing. 2. Rotate the block portion of the pump containing the motor windings toward the front of the washer. This
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    machine compartment, spread a towel under the connection of the drain hose to the pump. Loosen the clamp and remove the drain hose (Figure 6-10). 5. Reverse the previous steps for replacement. Drain Hose Drain Hose Access Cover Figure 6-9 Clamp Figure 6-10 16008373-01 SECTION 6. WATER CARRYING
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    16008373-01 SECTION 6. WATER CARRYING COMPONENTS © 1998 Maytag Corporation 6-7
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    tub cover and the locating notches in the door boot seal lip. DOOR BOOT The door boot rubber gasket provides a seal between the outer tub assembly and the front shroud. The boot seal is secured to the front shroud by locking tabs on the boot seal, which engage with slots in the shroud. Attachment
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    bent, the result will be a potential leak upon replacement of the boot seal onto the outer tub cover. 7. Reposition the front shroud on the front of the washer and secure (See Front Shroud). 8. Pull the front edge of the door boot and locate the widest locking tabs, located at the 12, 4 & 8 o'clock
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    Front Panel, Top cover, Front Shroud, Outer Tub Cover and Rear Baffle Removal). Figure 7-2 SPIN BASKET ASSEMBLY w/BALANCE RING The balance ring is securely fastened to the spin basket and cannot be obtained as a separate repair part spinner support by means of threaded studs on the support extending
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    spider assembly by a bolt. The direction of pulley rotation controls the spin action of the spin basket. NOTE: If the washer is cupped, flip the washer on the pulley so the cupped portion extends away from the shaft. Failure to do so can result in a binding of the spinner support shaft and seals
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    the shaft seal system should be replaced. Plastic Washer Seal Spin Basket (See Figure 7-5) Spinner Support Spacer Sleeve REMOVAL Figure 7-7 1. Disconnect power to the unit. 2. Remove the front panel, top cover, front shroud and outer tub cover (See Front Panel, Top Cover, Front Shroud and
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    power to the unit. 2. Remove the spinner tub support with spinner (See Spinner Tub Support Removal). 5. Position the spacer, replacement rubber seal and steel seal washer into the outer tub bearing area. 6. Position the spinner with spinner support shaft into the outer tub and insert the shaft
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    Front Water Flume Upper Weight Displacement Switch Upper Weight Nut Figure 7-11 REMOVAL OF LOWER FRONT WEIGHT Figure 7-10 BEARINGS The bearings are not repairable or replaceable. Replacement of the complete outer tub assembly is required. COUNTER WEIGHTS 1. Remove the front panel (See Front
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    suspension support to the outer tub assembly. Isolator Strut Push Rod REMOVAL 1. Disconnect power to the unit. 2. Remove the front panel, top cover and front shroud (See Front Panel, Top Cover and Front Shroud Removal). Rear Strut 3. Disconnect dispenser hoses and injector hose connections
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    of the cabinet. Should contact with the cabinet occur before the machine reaches 500 rpm, the machine control is alerted and will reduce speed to implement a redistribution program. Outer Tub Switch Figure 7-15 16008373-01 SECTION 7. OUTER TUB & SPINNER ASSEMBLY © 1998 Maytag Corporation 7-9
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    16008373-01 SECTION 7. OUTER TUB & SPINNER ASSEMBLY 7-10 © 1998 Maytag Corporation
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    before beginning any service procedures. The motor drive system tear-down procedure covers all components related to the drive system, such as the drive motor, drive belt, motor control, machine control and accelerometer switch. Figure 8-1 DRIVE BELT DRIVE MOTOR The drive belt has six (6) ribs
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    the machine control, paying close attention to the wire harness hookup to the control board. 4. Remove the two 5/16" nuts securing the board to the rear console panel. 5 . Reverse the previous procedures to remount the board. 16008373-01 SECTION 8. MOTOR DRIVE SYSYTEM © 1998 Maytag Corporation
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    the cabinet. The assembly comprises of the circuit board, control cover, mounting plate and motor wire harness. REMOVAL 1 . Disconnect power to the unit. 2 . Remove the front panel (See Front Panel Removal). 3 . Remove the shield/cover from the motor control board by depressing the locking tab found
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    16008373-01 SECTION 8. MOTOR DRIVE SYSYTEM © 1998 Maytag Corporation 8-4
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    SECTION 9. ELECTRICAL SCHEMATICS & TIMER INFORMATION Prior to Series 17 16008373-01 SECTION 9. ELECTRICAL SCHEMATICS © 1998 Maytag Corporation 9-1
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    TIMER CHART - Prior to Series 17 16008373-01 SECTION 9. ELECTRICAL SCHEMATICS © 1998 Maytag Corporation 9-2
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    ELECTRICAL SCHEMATIC - Series 17 16008373-01 SECTION 9. ELECTRICAL SCHEMATICS © 1998 Maytag Corporation 9-3
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    TIMER CHART - Series 17 16008373-01 SECTION 9. ELECTRICAL SCHEMATICS © 1998 Maytag Corporation 9-4
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    ELECTRICAL SCHEMATIC - Series 18 16008373-01 SECTION 9. ELECTRICAL SCHEMATICS © 1998 Maytag Corporation 9-5
  • Maytag MAH5500BWW | Service Manual - Page 85
    TIMER CHART - Series 18 16008373-01 SECTION 9. ELECTRICAL SCHEMATICS © 1998 Maytag Corporation 9-6
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    ELECTRICAL SCHEMATIC - Series 19 16008373-01 SECTION 9. ELECTRICAL SCHEMATICS © 1998 Maytag Corporation 9-7
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    NOTES: 16008373-01 SECTION 9. ELECTRICAL SCHEMATICS © 1998 Maytag Corporation 9-8
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    SECTION 4. WASHER CONTROLS OVERVIEW 3 SECTION 5. CYCLE REVIEW 4 Stain Cycle 4 Cycle Times 6 SECTION 6. GENERAL COMPONENT - EXPLODED VIEW 7 SECTION 7. ELECTRICAL INFORMATION 8 SECTION 8. WATER CARRYING COMPONENTS 9 WATER VALVE 9 DISPENSER ASSEMBLY 9 RECIRCULATION PUMP 10 DETERGENT HOSE 11
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    is supplemental to the information found in the basic manual part number 16008373.) SECTION 1. MAH4000/MAH5500A CONTROL FACIA SECTION 2. SPECIFICATIONS CAPACITY ELECTRICAL MOTOR POWER USAGE TUMBLER SPEED WATER USAGE HOSE LENGTHS DIMENSIONS 3.1 Cubic Feet 120 Volts, 60 Hz; Requires 15 amp
  • Maytag MAH5500BWW | Service Manual - Page 90
    recirculation pump draws water from the bottom of the outer tub and circulates the water up through the detergent hose, then into the top of the outer tub. By doing this, the washer is able to provide a more even distribution of detergent throughout the wash load. SECTION 4. WASHER CONTROLS OVERVIEW
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    the pressure switch. Now the recirculating pump is controlled through the pressure switch (Figure 4-2). This was done to force the washer to fill with water prior to starting the recirculation pump. SECTION 5. CYCLE REVIEW Figure 5-1 Cycles on the Fabrics switch now list the cycles according to how
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    will vary based on water fill times, due to types of clothing loads and the time for the door lock system to retract at the end of the cycle. 3. The main wash time is affected significantly if the machine control detects an excessive amount of suds via a loss of motor torque. The washer will go into
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    of the wash time preselected. 4) Bleach fill wash fill temperature. 5) Rinse times (including fills) are now 5-1/2 Time 20 Minutes @ 7T/3P (7T=7 second tumble, 3P=3 second pause) Fill Time Final Spin Total Run Time: 6-1/2 Minutes __________ of Wash cycle after the washer is filled. 2. Suds
  • Maytag MAH5500BWW | Service Manual - Page 94
    SECTION 6. GENERAL COMPONENT - EXPLODED VIEW Component Identification & Location: 16010199 (16008373-03) 7 Revised 7/00 ©2000 Maytag Appliances Sales Company
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    26) Door Lock - Spin P3 (1) Machine Control & Motor Control P5 (WH11) Power Hot Water Valve P5 (WH11) Cold Water Valve P5 (WH11) Door Lock Wax Motor Bleach Water Valve Softener Water Valve Delay Light P5 (WH11) P5 (WH11) P5 (WH11) Line Relay NO (GY 26) MACHINE CONTROL BOARD TERMINAL/WIRE
  • Maytag MAH5500BWW | Service Manual - Page 96
    shut off electrical power to the unit before beginning any service repair procedures.  &2,/ :$7(5 9$/9( 7+(50,6725 &211(&7,21 %OHDFK +RW &ROG )DEULF 6RIWQHU WATER VALVE The water valve is accessible from the front of the machine. The flow rate of the dispenser 3 gpm. Removal 1. Discontinue
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    to the siphon cup assembly. FABRIC SOFTENER BLEACH Figure 8-4 1. Disconnect power and water to the machine. 2. Remove the front panel. 3. Lay a towel under the tub to pump hose and loosen the clamp on the pump connection to the hose. 4. Loosen the clamp on the detergent hose connected to the side
  • Maytag MAH5500BWW | Service Manual - Page 98
    DETERGENT HOSE The detergent hose leads from the recirculation pump up the rear of the washer cabinet and leads to the top of the outer tub assembly. The hose provides a path for the water to recirculate from the lower part of the outer tub assembly to the enter on top of the outer tub assembly.
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    the rear mounting clip on the detergent hose in the access panel opening and slide the clip off the cabinet hose turns 90 degrees toward the front of the washer and passes through the saddle horn on the top of the outer tub. Unsnap the hose from the saddle horn. (See Figure 8-12) 12 ©2000 Maytag
  • Maytag MAH5500BWW | Service Manual - Page 100
    outer tub and remove the hose. 9. To reinstall, reverse the removal steps taking note of the indicators on the hose in reference to the mounting clips, making sure the hose does not kink above the recirculation pump. 16010199 (16008373-03) 13 Revised 7/00 ©2000 Maytag Appliances Sales Company
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    packed in the control console in the washer for up to date wiring information for the product your are servicing. The schematics on the following pages are only a general reference at the time this manual was printed. 16010199 (16008373-03) 14 Revised 7/00 ©2000 Maytag Appliances Sales Company
  • Maytag MAH5500BWW | Service Manual - Page 102
    SERIES 10 - SCHEMATIC (MAH4000 only) 16010199 (16008373-03) 15 Revised 7/00 ©2000 Maytag Appliances Sales Company
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    SERIES 11 (MAH4000 and MAH5500) 16010199 (16008373-03) 16 Revised 7/00 ©2000 Maytag Appliances Sales Company
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    SERIES 10 - TIMER CHART (MAH4000) 16010199 (16008373-03) 17 Revised 7/00 ©2000 Maytag Appliances Sales Company
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    SERIES 11 - TIMER CHART (MAH4000 & MAH5500A) 16010199 (16008373-03) 18 Revised 7/00 ©2000 Maytag Appliances Sales Company
  • Maytag MAH5500BWW | Service Manual - Page 106
    Century Neptune Washer Service Manual Supplement 16008373-05 Attached is Supplement five for service manual 16008373. This Maytag Washer Service Manual supplement covers Models MAH5500B and MAH7500. The following information is supplemental to the information found in the basic manual part number
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    you file this with your 16008373 Manual for reference. Models covered in this manual supplement: MAH5500B MAH7500A CONTENTS SECTION 1. GENERAL INFORMATION 1-1 SECTION 2. WASHER CONTROLS OVERVIEW 2-1 SECTION 3. DIAGNOSTIC/HELP CODE TABELS 3-1 SECTION 4. ELECTRICAL COMPONENTS & TESTING 4-1 SECTION
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    16010486 (16008373-05) iv Revised 02/01 ©2001 Maytag Appliances Sales Company
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    Motor controlled by a microprocessor motor control board. Motor Pulley Ratio (Motor to Spinner RPM) 14 to 1 (MAH5500B) 14.1 to 1 (MAH7500A) Motor inlet hoses with inlet washers and attached to water valve. Drain hose attached to pump and will accommodate 36" drain stand pipe. Cabinet Dimensions: 27
  • Maytag MAH5500BWW | Service Manual - Page 110
    of the door. The water level pressure switch was relocated from the console to the top of the pump, thus eliminating the airdome hose. The motor drive system was changed to a sensorless system, thus eliminating the tach sensor in the motor in the harness leading to the motor control board. Heater
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    : The final rinse time does not include the Tumble Flush time. Tumble Flush time will add a minimum reverse direction and repeat. Number of Rinses: Extra Quick Rinse Spin Extra X 2-4 MAH7500 16010486 (16008373-05) Revised 02/01 Section 1. General Information ©2001 Maytag Appliances Sales Company 1-3
  • Maytag MAH5500BWW | Service Manual - Page 112
    DURING SPIN CYCLE Spin Speed Drain Pump a) =540 rpm and 30 seconds after 15 second on and 45 seconds off the machine has reached the target
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    sump. • The control displays the estimated time remaining in the cycle. • The control panel detects hose reversal and changes the fills as necessary. • The control panel stores codes to aid the service person in diagnostics. BASIC CONTROL BOARD PHILOSOPHY FOR BOTH WASHERS: 16010486 (16008373-05
  • Maytag MAH5500BWW | Service Manual - Page 114
    MODE The delay start option is primarily used when a person wants to run the washing minus button within 5 seconds of the previous key press will increase or decrease one level. The new end of cycle shall sound. 16010486 (16008373-05) Revised 02/01 Section 2. Washer Controls Overview ©2001 Maytag
  • Maytag MAH5500BWW | Service Manual - Page 115
    SELECTIONS: (LCD Washer) All selections described under the LED washer section are familiar except in the Delay mode. In this mode, time is increased in 15 minute increments up to 12 hours. 16010486 (16008373-05) Revised 02/01 Section 2. Washer Controls Overview ©2001 Maytag Appliances Sales
  • Maytag MAH5500BWW | Service Manual - Page 116
    on the heater assembly. The machine control board uses this input signal to maintain the water temperature in the sump area of the outer tub, by cycling the heater on/ off. 16010486 (16008373-05) Revised 02/01 Section 2. Washer Controls Overview ©2001 Maytag Appliances Sales Company 2-4
  • Maytag MAH5500BWW | Service Manual - Page 117
    Circuit Diagnostics). If the machine control commands a motor speed and direction but does not sense a tach input signal within 2 or 3 seconds, it will assign a HELP code number and perform 10 retries. If unsuccessful, this generally indicates a locked rotor or a malfunction in the motor control. If
  • Maytag MAH5500BWW | Service Manual - Page 118
    when the washer door is locked. CYCLE SEQUENCE DEFINITIONS IDLE/PAUSE MODE (LED Model) After pressing the Off key, the entire washing machine will shut down after unlocking the door and will be in the Idle Mode. In the idle mode all the outputs are de-energized, all the LEDs and display are off
  • Maytag MAH5500BWW | Service Manual - Page 119
    normal while the machine is filled with water. The purpose of this function is to clean the machine. Rinse tumble flush is performed during the final rinse to reduce the chance of suds creation. 16010486 (16008373-05) Revised 02/01 Section 2. Washer Controls Overview ©2001 Maytag Appliances Sales
  • Maytag MAH5500BWW | Service Manual - Page 120
    checked by the machine control board for proper operation. This is done in the following manner. 1. The door will be locked. If the door does not lock on the first try, a help code 47 is logged into the control memory. The display will show the door has not locked. 2. If the door lock switch check
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    washer can be placed into an Advertising Mode or into a Service Mode for the service technician. ADVERTISING MODE This mode will continuously display the LEDs on the keyboard or illuminate the LCD touch screen. 16010486 (16008373-05) Revised 02/01 Section 2. Washer Controls Overview ©2001 Maytag
  • Maytag MAH5500BWW | Service Manual - Page 122
    , and control system diagnose mode or advance the washer to the next step in the wash cycle. (See Service Mode Table) The information will be displayed and a variety of other information about the machine can be accessed via the Help and Diagnostic codes. While in advertising mode, the display will
  • Maytag MAH5500BWW | Service Manual - Page 123
    Hand Wash Special Test/Function Shows Motor Torque Membrane Pad Check Fast Time Down Test Quick Spin Test Displays Software Revision Number Quick Service Cycle Board Output Test Help Codes Diagnostic Codes Board Input Tests Membrane Pad Check While in service mode, pressing the wrinkle free key
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    first diagnostic code that was logged would be displayed. 16010486 (16008373-05) Revised 02/01 While in quick service cycle, the pressing of the hand wash will suspend the ma- chine at this step until the Hand Wash key is pressed again up to 30 minutes. All Section 2. Washer Controls Overview
  • Maytag MAH5500BWW | Service Manual - Page 125
    INPUT TEST While in service mode press the hand wash key places the washer into the Board Input Test. Key Pressed: Function: Feedback: Cotton/Sturdy Door Position "d0" Open "d1" Closed Delicates Latch Position "L0" Unlocked "L1" Locked Wrinkle Free High Water Level "~0" Below Level "~1" Above
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    , when the washer shuts down, something shall be displayed on the display until the consumer presses a key or opens the door. See the table for specific actions or references to where the proper action is defined. Accessing Diagnostic Codes After the machine is in the service mode, pressing presoak
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    the washer control panel to initiate. User Interface Tests upper left User Interface Test upper right Touch the four corners and center of the touch screen in any order. center The Service Mode screen lists four different touch panels; service tests, RPM/ torque, unbalance diagnostic codes and
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    displays service cycle Service Cycle The service cycle can be run during a wash/spin cycle or can be used to initiate a particular cycle in the washer. To access this, select service cycle in the Service Mode. 16010486 (16008373-05) Revised 02/01 Section 2. Washer Controls Overview ©2001 Maytag
  • Maytag MAH5500BWW | Service Manual - Page 129
    the washer through various parts of the wash cycle and will display the following on the control panel. • “Cold water fill” • During the second step of the test, the technician will be prompted to “Open and close the door and then restart by pressing start/pause”. • “Locking the door”, “Cold water
  • Maytag MAH5500BWW | Service Manual - Page 130
    will display the status of all the outputs and inputs to the control board. To toggle outputs, press PAUSE and select output below Output Status hot water on cold water on bleach valve on fabic softener on drain on motor control on heat on Input Status door closed door locked unbalance detected
  • Maytag MAH5500BWW | Service Manual - Page 131
    Wash/Tumble) Water valve thermistor readings are contrary to what is being demanded by washer control board. Locked rotor condition during a spin. Check for restricted drain system, kinked/plugged drain hose or pump. Check pump for proper function. May see diagnostic code 01. Informative only
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    washer over again. Check for Diagnostic Code 08 22 (Not used) 23 Too much power Motor on at full Informative Only at 450-850 rpm power for 30 seconds between 450-850 rpm 24-29 (Not used) 30-32 (Not used) 33 Excessive Subs Detected During wash/tumble Control board detects motor torque
  • Maytag MAH5500BWW | Service Manual - Page 133
    Help Code Description 38-39 (Not Used) Trigger Action to be Taken 40 Motor running and Motor running and Perform Diagnostic Motor/Motor the Door is not the door is not locked Control Board test. Check wire harness locked connections at motor, motor control board (JP4 connector) 41 No tach
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    drain hose or pump •Faulty pump •Loose wire connections •Bad control board LED - Will display "LO" LCD - Display washer will not unlock Check for: •Faulty door lock solenoid •Loose wire connections •Faulty door lock switch •Faulty door lock sense switch •Bad control board LED - Will display "nF
  • Maytag MAH5500BWW | Service Manual - Page 135
    for: •Loose wire connections •Faulty unbalance switches •Unlevel washer; leveling legs not locked •Weak floor 1. Clear diagnostic codes 2. Unplug and replug in power cord washer at power supply outlet 3. If a condition still exists, replace machine control board. 15 Stuck key A key is sensed to be
  • Maytag MAH5500BWW | Service Manual - Page 136
    Diag.Code Description Trigger 19 Door lock sense or Door lock sense motor control switch on machine relay failed control board is read as open with motor running Action to be Taken (LED Washer only) See list for diagtnostic code 18 20 Door switch input Door switch is open (LED Washer only
  • Maytag MAH5500BWW | Service Manual - Page 137
    GENERAL COMPONENT - EXPLODED VIEW Component Identification & Location: 16010486 (16008373-05) Revised 2/01 Section 3. Teardown & Wiring Information ©2001 Maytag Appliances Sales Company 3-7
  • Maytag MAH5500BWW | Service Manual - Page 138
    water valve energized. Diagnostic code – A problem with a system that is severe enough that the cycle was stopped and it is recommended the machine be serviced press or door opening or closing. Redistribution – As the machine is accelerating into spin, if it detects that the clothes load is
  • Maytag MAH5500BWW | Service Manual - Page 139
    while the machine is filled with water. The purpose of this function is to clean the machine, mix detergent and during the final rinse to reduce chance of suds creation. Tumble Speed – This is the speed of the washer spinner. Tumble drain – When the drain pump is on while the machine is tumbling
  • Maytag MAH5500BWW | Service Manual - Page 140
    16010486 (16008373-05) Revised 2/01 Section 3. Teardown & Wiring Information ©2001 Maytag Appliances Sales Company 3-10
  • Maytag MAH5500BWW | Service Manual - Page 141
    the washer into Service Mode. (See Section 2; Accessing Service Mode) 2. Select Service Tests, then Quick Spin Tests to actuate the door lock mechanism. Hit Cancel to unlock the door. Note: The relay on the control board for the door lock mechanism is disabled if the motor control board indicates
  • Maytag MAH5500BWW | Service Manual - Page 142
    wire). The machince control board outputs can be verified by placing the washer into the Service Mode and performing a Board Output Test. (See Section 2; Service Mode; Board Output Test.) 16010486 (16008373-05) Revised 02/01 Section 4. Electrical Components & Testing ©2001 Maytag Appliances Sales
  • Maytag MAH5500BWW | Service Manual - Page 143
    Washer) Description Bleach water valve output Chassis Ground Cold water valve output Door Lock output Door lock switch input Door switch input Door unlock output Drain pump output Heater - Neutral High water level - input Hot water valve output L1 to machine control board L1 to motor control Lower
  • Maytag MAH5500BWW | Service Manual - Page 144
    control console. (See Section 2; Accessing Service Mode; Membrane Pad Check) On both washers, you can check the membrane pads, by pulling the P7 connector from the machine control board and locating the corresponding switch pin numbers Components & Testing ©2001 Maytag Appliances Sales Company 4-4
  • Maytag MAH5500BWW | Service Manual - Page 145
    1. Push the plastic shield on either side of the locking tab to buckle and unlock the shield from the motor control bracket. (Figure 4-4) Motor Control Board Removal 1. Pull the vertical tab forward and lift the front of the motor control board and slide the control forward to lift and remove the
  • Maytag MAH5500BWW | Service Manual - Page 146
    power to the washer. 2. Remove the front panel and pull the JP4 Connector from the motor control board. (Figure 4-6) 3. Reconnect the washer power cord to supply voltage. 4. Press Help and Back function to activate Service Mode. Figure 4-6 5. LED Washer: Select Board Output Test; close door or push
  • Maytag MAH5500BWW | Service Manual - Page 147
    9. Unplug the washer power cord and replace motor control board connector JP4 when finished. HEATER ASSEMBLY The heater assembly located in the sump area of the outer tub is only on the MAH7500, LCD washer only. A thermistor located in the heater assembly monitors the water termperature in order
  • Maytag MAH5500BWW | Service Manual - Page 148
    there is a problem with the low water level sense. The control is required to see the low water level go from the wash water level becomes not satisfied. 3 The heater will never turn on for more than the maximum heater on time of Components & Testing ©2001 Maytag Appliances Sales Company 4-8
  • Maytag MAH5500BWW | Service Manual - Page 149
    to the unit before beginning any service repair procedures. The replacement console assembly consists of the console, medallion steps. MICROPROCESSOR BOARD REMOVAL 1. Disconnect power to the washer. 2. Remove the console assembly. 3. Carefully Information ©2001 Maytag Appliances Sales Company 5-1
  • Maytag MAH5500BWW | Service Manual - Page 150
    the replacement machine control board. DOOR LATCH HOOP The latch hoop was redesigned, eliminating the latch hoop support and spring. REMOVAL 1. Remove the door assembly from the washer. 2. Dissassemble the door assembly by removing the outer door panel. 3. Locate the locking tab on the door latch
  • Maytag MAH5500BWW | Service Manual - Page 151
    Support Door Lock Spring Door Open/Closed Switch Solenoid Push-Rod Locking Lever Door Lock/ Unlock Switch Lamp Socket Door Actuator & Lamp Figure 5-7 Removal 1. Disconnect power to the washer. 2. Remove the front panel, dispenser bezel and lift the top cover to expose the door lock assembly
  • Maytag MAH5500BWW | Service Manual - Page 152
    and water to the machine. PRESSURE SWITCH 2. Remove the front panel and lift the top cover. The pressure switch was relocated from the console and mounted to a bracket extension molded as part of the pump 3. Remove the wire harness connections to the water valve solenoids. assembly. A vertical
  • Maytag MAH5500BWW | Service Manual - Page 153
    in the MAH3000 washer. The pressure switch mounting bracket is a molded part of the pump housing. For removal instructions, see page 6-4 in the 16008373 manual. HEATER ASSEMBLY Figure 5-11 Figure 5-12 Figure 5-13 The 1000 watt heater is located in the tub cover below the door openning and above
  • Maytag MAH5500BWW | Service Manual - Page 154
    counter clockwise direction. This will uncompress the rubber. REMOVAL 1. Remove the front panel, tub cover and the spinner. 4. Carefully remove the heater assembly from the tub cover. (If the heater has been in place for a period of time, the rubber may have taken a set. Then a complete tub cover
  • Maytag MAH5500BWW | Service Manual - Page 155
    refer to the technical schematic packed in the control console in the washer for up to date wiring information for the product your are servicing. The schematics on the following pages are only a general reference at the time this manual was printed. MAH5500B 16010486 (16008373-05) Revised 10
  • Maytag MAH5500BWW | Service Manual - Page 156
    MAH7500 16010486 (16008373-05) Revised 10/00 Section 5. Teardown & Wiring Information ©2001 Maytag Appliances Sales Company 5-8
  • Maytag MAH5500BWW | Service Manual - Page 157
    Maytag Appliances Sales Company Customer Service 240 Edwards Street, S.E. Cleveland, Tennessee 37311
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