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Maytag MAH5500B Supplemental Service Manual

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See also: User Manual
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 16008373. Please refer to this manual for detailed service
information.
We suggest you file this with your 16008373 Manual for reference.
16010486
(16008373-05)
MAYTAG
New Century
Neptune Washer
Service Manual
Supplement
©2001 Maytag Appliances Sales Company
16008373-05

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Summary of Contents for Maytag MAH5500B

  • Page 1 Supplement 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 16008373. Please refer to this manual for detailed service information.

  • Page 2: Table Of Contents

    Attached is supplement five (16008373-05) for service manual 16008373, which in addition to supplement three (16008373-03). This Maytag Washer Service Manual supplement covers Models MAH5500B & MAH7500A. We suggest you file this with your 16008373 Manual for reference. Models covered in this manual supplement:...
  • Page 3 16010486 (16008373-05) Revised 02/01 ©2001 Maytag Appliances Sales Company...

  • Page 4: Section 1. General Information

    . t f . t f , t l . t f . t f & . t f . t f . t f . t f 16010486 (16008373-05) Section 1. General Information Revised 02/01 ©2001 Maytag Appliances Sales Company...
  • Page 5 BASIC MACHINE OPERATION Models MAH5500B and MAH7500 are similar to the MAH4000 washer, with the exception being they do not have recirculation of the wash water. A special sump cap is placed directly above the sump area which catches the detergent and allows for a better mixing of the detergent and the wash water.

  • Page 6: Number Of Rinses

    Tumble Flush time. Tumble Flush time will add a minimum of 30 seconds to a maximum of 60 additional seconds to the final rinse time. (See definition of Tumble Flush) 16010486 (16008373-05) Section 1. General Information Revised 02/01 ©2001 Maytag Appliances Sales Company...
  • Page 7 ON/OFF SEQUENCE OF PUMP DURING SPIN CYCLE < < > r i f > l i t l i t l l a l i t 16010486 (16008373-05) Section 1. General Information Revised 02/01 ©2001 Maytag Appliances Sales Company...

  • Page 8: Section 2. Washer Controls Overview

    SECTION 2. WASHER CONTROLS OVERVIEW The software for the MAH5500B and the MAH7500 is different than the MAH4000 washer. The new controls operate via a membrane pad on the MAH5500 and a touch screen/membrane pad on the MAH7500 washer. Features of MAH5500B (LED Washer): Features of MAH7500 (LCD Washer): •...
  • Page 9 DELAY MODE decrease one level. The new end of cycle The delay start option is primarily used shall sound. when a person wants to run the washing 16010486 (16008373-05) Section 2. Washer Controls Overview Revised 02/01 ©2001 Maytag Appliances Sales Company...
  • Page 10 LED will return to being on constant. 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) Section 2. Washer Controls Overview Revised 02/01 ©2001 Maytag Appliances Sales Company...
  • Page 11 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) Section 2. Washer Controls Overview Revised 02/01 ©2001 Maytag Appliances Sales Company...
  • Page 12 (See Tachometer Circuit The end-of-cycle signal sounds as four Diagnostics). pulses on the MAH5500B and 3 pulses on the MAH7500 in a 0.5 second intervals. If If the machine control commands a motor the door is opened right at the end of the...
  • Page 13 The Door Locked Light Output signal off. powers a LED on the membrane pad switch of the LED washer. This output is energized when the washer door is locked. 16010486 (16008373-05) Section 2. Washer Controls Overview Revised 02/01 ©2001 Maytag Appliances Sales Company...
  • Page 14 The machine control commands a reduce the chance of suds creation. distribution profile speed ramp from 0 rpm to 85 rpm at the beginning of each 16010486 (16008373-05) Section 2. Washer Controls Overview Revised 02/01 ©2001 Maytag Appliances Sales Company...
  • Page 15 Emergency Door Open/ Cord Door Closed Lock/Unlock Mechanical Support Switch Solenoid Opener Solenoid Push-Rod Locking Lamp Socket Lever Door Lock/ & Lamp Unlock Door Actuator Switch 16010486 (16008373-05) Section 2. Washer Controls Overview Revised 02/01 ©2001 Maytag Appliances Sales Company...
  • Page 16 When a power loss occurs during the final MAH7500A: spin of a main wash cycle, the cycle will Continuously monitors and saves infor- end, on the MAH5500B. The MAH7500A mation to memory every minute or as will finish the spin cycle. cycle selection change.
  • Page 17 Help and Diagnostic codes. To aid the service technician, special software was incorporated into the con- trol boards of the MAH5500B & MAH7500 washers. The software is used to monitor several functions of the washer during operation and identify any abnormalities While in advertising mode, the display will as they arise.
  • Page 18 1-2) QUICK SPIN TEST c i l While in service mode, the pressing of spin key shall start the washer in the quick spin mode. 2-11 16010486 (16008373-05) Section 2. Washer Controls Overview Revised 02/01 ©2001 Maytag Appliances Sales Company...
  • Page 19 Hand Wash key is pressed again up to 30 minutes. All 2-12 16010486 (16008373-05) Section 2. Washer Controls Overview Revised 02/01 ©2001 Maytag Appliances Sales Company...
  • Page 20 ‘- -‘ will be displayed. If the code happened on the previous cycle, then the rightmost dot will be turned on. 2-13 16010486 (16008373-05) Section 2. Washer Controls Overview Revised 02/01 ©2001 Maytag Appliances Sales Company...

  • Page 21: Diagnostic Codes

    Clearing Diagnostic Code List The diagnostic code list can be cleared from memory, by pressing heavy soil and presoak keys for 3 seconds while viewing the list. 2-14 16010486 (16008373-05) Section 2. Washer Controls Overview Revised 02/01 ©2001 Maytag Appliances Sales Company...
  • Page 22 10 The diagnostic codes listed are the last seconds, the control will display “Touch four codes assigned by the washer. 2-15 16010486 (16008373-05) Section 2. Washer Controls Overview Revised 02/01 ©2001 Maytag Appliances Sales Company...
  • Page 23 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. 2-16 16010486 (16008373-05) Section 2. Washer Controls Overview Revised 02/01 ©2001 Maytag Appliances Sales Company...
  • Page 24 The default is that the tuning algorithm will apply, but it can be skipped. Plaster detection will default to disabled, but can be enabled. 2-17 16010486 (16008373-05) Section 2. Washer Controls Overview Revised 02/01 ©2001 Maytag Appliances Sales Company...
  • Page 25 For a listing of available diagnostic and system check screen and revert back to help codes, see Section 5: DIAGNOSTIC/ the previous screen shown on the display HELP CODE TABLES. panel.. 2-18 16010486 (16008373-05) Section 2. Washer Controls Overview Revised 02/01 ©2001 Maytag Appliances Sales Company...
  • Page 26 < 16010486 (16008373-05) Section 3. Teardown & Wiring Information Revised 2/01 ©2001 Maytag Appliances Sales Company...
  • Page 27 P " " F l l i l l i l l i l l i s l i l l i l l i > 16010486 (16008373-05) Section 3. Teardown & Wiring Information Revised 2/01 ©2001 Maytag Appliances Sales Company...
  • Page 28 16010486 (16008373-05) Section 3. Teardown & Wiring Information Revised 2/01 ©2001 Maytag Appliances Sales Company...
  • Page 29 • • • • • • • • l l i l l i L " " r • • • • • • • 16010486 (16008373-05) Section 3. Teardown & Wiring Information Revised 2/01 ©2001 Maytag Appliances Sales Company...
  • Page 30 • • • • • l l i o " " d • • • • • 16010486 (16008373-05) Section 3. Teardown & Wiring Information Revised 2/01 ©2001 Maytag Appliances Sales Company...
  • Page 31 • • • • • • • • • • • • • • • • • • • • 16010486 (16008373-05) Section 3. Teardown & Wiring Information Revised 2/01 ©2001 Maytag Appliances Sales Company...
  • Page 32 GENERAL COMPONENT - EXPLODED VIEW Component Identification & Location: 16010486 (16008373-05) Section 3. Teardown & Wiring Information Revised 2/01 ©2001 Maytag Appliances Sales Company...
  • Page 33 Hot water valve. Final Rinse – This is the last rinse of the cycle just preceding the final spin portion of the cycle. 16010486 (16008373-05) Section 3. Teardown & Wiring Information Revised 2/01 ©2001 Maytag Appliances Sales Company...
  • Page 34 The speed of the spinner is slow enough so that the clothes are being tumbled (i.e. lifted out of and dropped back into the water/detergent solution). 16010486 (16008373-05) Section 3. Teardown & Wiring Information Revised 2/01 ©2001 Maytag Appliances Sales Company...
  • Page 35 3-10 16010486 (16008373-05) Section 3. Teardown & Wiring Information Revised 2/01 ©2001 Maytag Appliances Sales Company...

  • Page 36: Section 4. Electrical Components & Testing

    Miscellaneous; Door Lock Philosophy. Bleach Cold Thermistor 4 Coil Water Valve Figure 4-1 The thermistor is on NTC and will drop in resistance when the temperature increases. 16010486 (16008373-05) Section 4. Electrical Components & Testing Revised 02/01 ©2001 Maytag Appliances Sales Company...
  • Page 37 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) Section 4. Electrical Components & Testing Revised 02/01 ©2001 Maytag Appliances Sales Company...
  • Page 38 INPUT/OUTPUT VOLTAGES (LCD Washer) i l l i i l l i INPUT/OUTPUT VOLTAGES (LED Washer) s i l s i l 16010486 (16008373-05) Section 4. Electrical Components & Testing Revised 02/01 ©2001 Maytag Appliances Sales Company...
  • Page 39 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) 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 in the ribbon harness.
  • Page 40 1. Pull the vertical tab forward and lift the front of the motor control board and Figure 4-5 slide the control forward to lift and remove the control from the bracket. (Figure 4-5) 16010486 (16008373-05) Section 4. Electrical Components & Testing Revised 02/01 ©2001 Maytag Appliances Sales Company...
  • Page 41 If bad, replace supply voltage. motor control/wire harness assembly completely. (Figure 4-7) 4. Press Help and Back function to acti- vate Service Mode. 16010486 (16008373-05) Section 4. Electrical Components & Testing Revised 02/01 ©2001 Maytag Appliances Sales Company...

  • Page 42: Heater Assembly

    Figure 4-9 9. Unplug the washer power cord and replace motor control board connec- tor JP4 when finished. 16010486 (16008373-05) Section 4. Electrical Components & Testing Revised 02/01 ©2001 Maytag Appliances Sales Company...
  • Page 43 Thermistor Temperature Chart º 5 º 8 º 5 º 8 º 5 º 5 º 5 º 1 º 0 º 4 16010486 (16008373-05) Section 4. Electrical Components & Testing Revised 02/01 ©2001 Maytag Appliances Sales Company...

  • Page 44: Section 5. Teardown & Wiring Information

    Note the hooked tabs on bottom of the console, which engage the slots in the top cover. Figure 5-4 LED MODEL Figure 5-2 16010486 (16008373-05) Section 5. Teardown & Wiring Information Revised 10/00 ©2001 Maytag Appliances Sales Company...
  • Page 45 5. Reinstallation is a reversal of the aforementioned steps. Figure 5-5 The cover plug simply fills a void area in the console for cosmetic purposes only. Figure 5-6 16010486 (16008373-05) Section 5. Teardown & Wiring Information Revised 10/00 ©2001 Maytag Appliances Sales Company...
  • Page 46 4. Roll the top of the door lock assembly forward and lift from the front shroud Figure 5-8 assembly. 16010486 (16008373-05) Section 5. Teardown & Wiring Information Revised 10/00 ©2001 Maytag Appliances Sales Company...
  • Page 47 16010486 (16008373-05) Section 5. Teardown & Wiring Information Revised 10/00 ©2001 Maytag Appliances Sales Company...
  • Page 48 When the nut is secured, the rubber is compressed and expands to seal the heater entry hole in the tub cover. Heater resistance is 14 ohms. Figure 5-12 16010486 (16008373-05) Section 5. Teardown & Wiring Information Revised 10/00 ©2001 Maytag Appliances Sales Company...
  • Page 49 The sump cover is located in the lower rear area of the outer tub assembly, directly above the sump area and the drain outlet. The purpose of the sump cover is to cap- 16010486 (16008373-05) Section 5. Teardown & Wiring Information Revised 10/00 ©2001 Maytag Appliances Sales Company...
  • Page 50 The schematics on the following pages are only a general reference at the time this manual was printed. MAH5500B 16010486 (16008373-05) Section 5. Teardown & Wiring Information Revised 10/00 ©2001 Maytag Appliances Sales Company...
  • Page 51 MAH7500 16010486 (16008373-05) Section 5. Teardown & Wiring Information Revised 10/00 ©2001 Maytag Appliances Sales Company...
  • Page 52 Maytag Appliances Sales Company Customer Service 240 Edwards Street, S.E. Cleveland, Tennessee 37311...

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Mah7500a

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