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Customer Service
TM
W Washer asher
Service Service Manual Manual
16010061
Compiled From
16008373, 16010199,
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SAFETY PRECAUTIONS 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 improper means or adjustment subject themselves and others to the risk of serious or fatal injury. USE ONLY GENUINE MAYTAG APPROVED FACTORY REPLACEMENT COMPONENTS. 16008373-01 SAFETY
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INTRODUCTION Each model will be covered separately in a section pertaining only to its 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 Appliances Sales Company 240 Edwards Street, S.E. Cleveland, TN 37311 Phone: 423.472.3333 FAX: 423.478.6722 160
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CONTENTS CONTENTS CONTENTS CONTENTS CONTENTS INTRODUCTION INTRODUCTION ............................................................................................................................... ........................................................................................................................................................... ............................ ii INTRODUCTION INTRODUCTION INTRODUCTION ..........................................................................
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SECTION 3. TROUBLESHOOTING SECTION 3. TROUBLESHOOTING SECTION 3. TROUBLESHOOTING SECTION 3. TROUBLESHOOTING SECTION 3. TROUBLESHOOTING ................................................................................................................ ................................................................................................................ ................................................................................................................ .....................
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SEAL SYSTEM .................................................................................................................................................................. 7-6 OUTER TUB ASSEMBLY............................................................................................................................................ 7-7 BEARINGS .....................................................................................................................................................
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SECTION 1. GENERAL INFORMATION PRE-INSTALLATION REQUIREMENTS NOTE: Proper installation is the responsibil- cause an extended fill time. Refer to the ity of the purchaser. troubleshooting section for more infor- mation regarding a solution for slow fill Checkpoints for proper installation: situations. • Properly grounded electrical outlet is re- • Best performance is obtained with the quired. Use 15 amp fuse or compatible washer installed on a solid floor. Wood circuit breaker for electrical
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INSTALLATION 1. Two separate red shipping straps are used to secure the machine for shipping pur- poses and to secure the power cord with the water inlet hoses. Remove the straps in the following sequence: A. Locate the metal buckles securing the red straps which extend through slots in the rear wall of the cabinet. The buckles are positioned in the center of the red straps. Carefully cut the red straps, and remove Figure 1-2 the metal buckles. NOTE: Cut the straps as close to the buckles as
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Turn on the water and check for leaks (Figure 1-5). Note the H and C designations on the water valve bracket for the Hot and Cold hoses. Figure 1-4 Figure 1-5 4. Slide the washer into position and check NOTE: Accessory inlet hoses are available in the levelness and stability of the washer. various lengths, up to 10 feet. If necessary, slide the washer out of posi- tion to either raise or lower the leveling leg as required to level and stabilize the GROUNDING POLARITY CHECKS washer securely on
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Plug power cord into a properly grounded 120 volt AC-approved electrical service. This must be protected by a dedicated 15 amp fuse or circuit breaker. All grounding and wiring should be performed in accordance with national and local codes. USE OF ADAPTERS IS NOT RECOMMENDED. Figure 1-6 SPECIFICATIONS CA CAP PA AC CIIT TY Y 3. 3.1 1 C Cu ub biic c F Fe ee et t EL ELE EC CT TR RI IC CA AL L 12 120 0 v vo ollt ts s, , 6 60 0 H Hz z; ; R Re eq qu uiir res es 1 15 5 am amp p c ciir rc cu uiit t
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WASHER CONTROLS The control system in the Neptune horizontal axis washer generally consists of a timer and microprocessor-based machine control. These receive input signals and send output signals to other equipment 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
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Series 17 & Later Figure 1-8 NOTE: If the user selects the Hand Washables INPUT DEFINITIONS fabric selection, all spins will follow the Max Extract profile regardless of whether the user DOOR LOCK SWITCH INPUT selects the Max Extract option. When input is present, this is indication the washer door is locked. The machine control- OUT-OF-BALANCE INPUT ler will not command the spinner to spin faster The Out-of-Balance Input Signal is provided than 50 rpm when the input is not present by three no
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machine control interprets this loss of power TACH INPUT as an indication that the water level has The tach input is a feedback signal from the reached the full level. motor control. It provides eight pulses per revolution of the switched reluctance motor. When the washer is at the "full" level and the The motor runs at 14 times the speed of the timer is set in a Prewash Tumble, Main Wash spinner (14:1 belt ratio). The tach input is used Tumble, Light Wash Tumble, or Rinse Tumble for monitorin
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END-OF-CYCLE SIGNAL OUTPUT OUTPUT DEFINITIONS The End-Of-Cycle Signal Output is an inter- nal signal on the machine control between the DOOR LOCKED LIGHT OUTPUT microprocessor and annunciator. The end-of- cycle signal sounds when a wash cycle is fin- NOTE: This section applies only to washers ished and the End-Of-Cycle Input is energized. between Series 10 and 16. The "Door Locked" The end-of-cycle signal sounds as six pulses lights on washers from Series 17 and after are in a 0.35 seconds on
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circuit opens and de-energizes the Pressure The machine control counts the number of Switch Input on the machine control, which rinses during a normal wash cycle. In the first de-energizes the Water Valve Outputs. and second Rinse Tumble increments, the machine control will energize the Timer Mo- The machine control will read the Water Tem- tor Output as soon as the Pressure Switch In- perature Sensor Input to determine the put is no longer energized, indicating that the blended water temperatu
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washers only) will de-energize and the End- CYCLE SEQUENCE DEFINITIONS of-Cycle Signal will sound if the user had se- lected the End-of-Cycle Signal option. NOTE: Refer to Section 2: Timer Input Charts LIGHT WASH TUMBLE, MAIN WASH for information on the timing of each cycle TUMBLE, and RINSE TUMBLE sequence. The machine control will tumble the washer BLEACH DISPENSE at the pattern and speed defined by the Fabric Selection Inputs (See Cycle Review). Each In a Bleach Dispense increment, the machi
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In a Prewash Tumble increment, the machine control will energize the timer motor output control will de-energize the line relay if the until the timer inputs change so the washer washer continues to tumble for 15 minutes. can proceed with the cycle. This would only occur if the timer were to stall (See Section 1: Timer Motor Output and Sec- At the end of spin sequence, if the door lock tion 2: Timer Input Chart). switch input is de-energized before the washer drops below 91 rpm, a hardware circ
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The following rules determine the maximum STOPPING THE WASHER number of redistribution attempts that will be allowed in each spin step before the machine 1. With the washer running, power is control skips the step and continues with the supplied to the machine control and spin profile (See Section 2: Unbalance Con- washer from gray wire no. 26 through the trol System). line relay. 2. When the user presses the push-to-start button, a signal is sent to the machine con- trol through red wire no. 28
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CYCLE REVIEW Main Wash Time/Total Cycle Time - Minutes (See Notes). N on-M ax Ea sy C are / Hand Ex tra ct Cotton/ Sturdy Pe rm Press D e licate s Washables H eavy W ash 23 .0 /4 9.0 20 .0 /4 5.5 20 /46.5 N ot A pplicable Norm al W ash 17 .0 /4 3.0 14 .0 /3 9.5 14 .0 /4 0.5 N ot A pplicable Light/Quick 11 .0 /3 7.0 8.0/33 .5 7.0/34 .5 N ot A pplicable Wash Fin al S p in 80 0/3.5 60 0/3.0 50 0/4.5 N ot A pplicable (RPM /M i n ) Max Extract Ea sy C are / Hand Cycles Cotton/ Sturdy Pe rm Press D e
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GENERAL COMPONENT EXPLODED VIEW 16008373-01 SECTION 1. GENERAL INFORMATION 1-14 © 1998 Maytag Corporation
