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Maytag Neptune MAH4000AWW noises

I have a Neptune MAH4000AWW, it has stopped mid cycle twice in one wash. I did get it to finish and now it is making some "griding noises". What could be wrong? I have heard about replacing the wax motor. Could that be my problem? Thank you

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  • cdkoshivas Sep 24, 2007

    Thanks for your quick reply. It starts when the machine does, it stops during the spin cycle, and restarts again during the rinse cycle. My husband is familiar with the ohm meter so if you could send instructions that would be great. Is it the motor/motor controller part(s) that are expensive - because he could do the labor himself. Thanks again - Cheryl Koshivas

  • cdkoshivas Sep 25, 2007

    Ok he did as you said. He ran it and actually stuck his hand inside by the motor (not a good idea I know) he said the motor vibrated, as well as the shaft attached to the motor and the belt. It wouldn't be the drain pump because it starts as soon as you start the machine. The drain pump would not be working at that point right? Could it be whatever the belt attaches to? Thanks for your help again.

  • cdkoshivas Sep 26, 2007

    Hello again - He opened up the back as you said. The pulley moves back and forth fine, does not stick or stall. He believes it is the motor. I read somewhere that the circuit board for the motor can short out as well. We both looked at it and it looks fine - no black marks. Do we need to replace anything other than the motor itself - and the wax motor? If we replace the door boot with one that drains will that solve the mold problem? Thanks. - Cheryl

  • cdkoshivas Sep 26, 2007

    We have decided rather than to spend the $ 300 odd dollars for parts to fix a machine this old - we will take that 300 dollars and put it into a newer machine with a warranty. Thanks for all your help though you were great! I would definitely use this service again!



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Cd, Im not so sure that the wax motor would have anything to do with the problem. If the door is locking, I would say no. It sounds more like it is dropping a phase on the motor. On this model the motor still can run under light loads when one of the 3 motor phases is not working. When you mentioned grinding noise, if the motor is not functioning right, (loosing a phase) it will be noisier and make a growling noise. Im wondering if that is what you are hearing. We can rule out the motor or motor controller but you are going to have to do some tests with an ohm meter. This will also require removing the door, front panel to get at the motor controller. The motor and motor controller can be expensive so you need to decide whether you want to invest money into this Neptune. You decide and post back. I can walk you through the tests. Catriver.

Posted on Sep 24, 2007

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  • Ron Marek
    Ron Marek Sep 24, 2007

    Ok Cheryl, Im going on the assumption that the grinding starts during the wash tumble cycle and the cycle stops and you have to restart the cycle. It is possible that the noise is coming from the drain pump, you can check that when you get the front off. Im ruling out any bearing problem because you stated the spin is normal, no unusual sounds. The door latch is locking so I am ruling out the wax motor. Next is motor and motor control. He will have to remove the front door by removing the hinge screws and the spacers on the other side. Lift up and door will pull off. Next you will have to remove the front panel. It should just pull out and lift off. Now you can see the motor controller on the lower right side. You can replace the door (just hang it on its hinges) and close it so it locks. Now you can run the machine with the front panel off. Before we get into the detailed testing, run the machine with the front panel off and see if you can determine if the grinding sound is coming from the pump or the motor. back.

  • Ron Marek
    Ron Marek Sep 25, 2007

    Cheryl, have him inspect the rear pully first. The motor should not be vibrating. There is a panel in back that can be removed with about 6 quarter inch screws. See if the pully that the belt rides on is loose or wallowed out. If that checks ok, we will go after the motor. Catriver.

  • Ron Marek
    Ron Marek Sep 26, 2007

    Hi Cheryl, as long as the door locks, no wax motor. Sounds like you have it dialed down to the motor itself. You can check the motor controller by doing the following. Set the timer knob into delay .Unplug the washer. Remove the 6 pin connector JP4 from the motor controller.Plug the washer back in. Press the push to start switch and confirm that the delay light comes on. The washer should tumble at 50 rmp continuously. If the washer tumbles, the motor controller is good. As far as the boot is concerned, change it out if it is full of mold. Or just clean it with warm water and bleach mixture. Catriver.



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