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Maytag Neptune Motor jerking

I have a Maytag Neptune MAH3000AWW washer. It quit washing in the middle of the cycle a couple of nights ago. I found the service manual here and went throught the steps. It motor jerks for a bit and stops. As I jiggled the tach connector on the motor, it would stop jerking and go back o jerking. I finally found the solder on the tach connector on the optical sensor board (mounted on the motor) had come loose. I re-soldered the connection and put everything back together. Now it jurks but differently. I think the black wheel with the grooves for the tach or optical needs to be positioned correctly, but I have no idea what that would be. I can't find anything about this alignment online or in the service manual. Thanks in advance for your help.

Posted by Anonymous on

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This will be a partial answer since I am having the same issue. The position of the position sensor is very critical. In the Emerson assembly plant one of the motor phases was energized which locked the motor in a known position. The position sensor was then placed on the shaft and adjusted until the optic switch changed state. The position sensor was then locked down with the clamp. Even with marking the position sensor and the end of the shaft it seems imposible to get the position correct again. I will post further info if I figure it out.

Posted on May 31, 2013

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 96 Answers

SOURCE: MAYTAG NEPTUNE LR CODE

LR usually means that the the signal from the board is not getting to the motor either because of a bad connection at either the motor or the board or the motor itself is no good. Need to check the connections first.

Posted on Jun 08, 2008

tzweeb
  • 318 Answers

SOURCE: Maytag Neptune MAH5500BWW Will not spin

maytag neptune washers do have a motor problem and they have a kit to replace the motor and motor controller.
when the motor fails, it wont wash or spin. most units have a 5 year parts warranty and should be replaced with a free part, but you will have to pay an authorized servicer to do this.
if it is over 5 years then i would call maytag and see if they will help you with an authorization for repair.
most of the time they will provide the part for free. just call the 800 # and ask for help. they wont send you the part but might give you some help with the parts.

Posted on Jan 06, 2009

dh1200s
  • 335 Answers

SOURCE: Maytag Neptune Top Load FAV6800AWW -- tub/motor will not spin

Hey Cameron,
I saw you post today on another forum and did not have time to put my thoughts down before work. I agree not a clutch issue I had to :), you would be so lucky. I own the machine and can’t offer any more troubleshooting then what you have done, good job of that. Unfortunately the FAV6800AW/FAV9800AW SM doesn’t have a whole lot of support for troubleshooting beyond what you have done for this issue. I found more info from the MAH3000 manual on the technical operation of the motor controller (slightly different controller). Both machines use the same troubleshooting paths. Remove JP4 which is;
P1 Motor Control common
P2 Torque (to Motor Controller) see page 1-11 MAH3000
P3 Motor Control Tach (to control board input)
My WAG is replace the Motor Controller 1st, then Control board 2nd and a possible tach issue related to the motor. That’s enough WAGing,…. but with troubleshooting not a complete WAG :).
Take a look at pages 2-5 thru 2-11, I keyed in on page 2-11 in the MAH3000, it may give you some additional insight, I know we are dealing with different machine designs but I think the designs are close regarding motor controller, the motor and what the Control Board is doing and looking for with input from the Motor Controller. I wish the FAV6800AW/FAV9800AW SM gave this kind of detail for troubleshooting. There is a nice little troubleshooting table on 2-11.
I keyed in on this note;

The motor control monitors the signals and communicates this information to the machine control (control board). The purpose of this signal is to tell the motor when to energize each winding in the motor and to tell the machine control the actual motor speed.

Then this note;
Note: 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 not receive an input signal from the motor, the motor will "****" for 5 seconds then shut down.

I don’t believe you have that condition. I have worked with a forum member who had an issue with the motor controller related to an Lr error, locked rotor error and replacing the Motor Controller fixed the issue. Form here I vote for an issue with the Motor Controller. Not having known good parts makes this a difficult job.
The control board is under warranty for 5 yrs from DOP, the Control Board is 2 yrs. Ebay is a good source 25001079

I would push Maytag CSV for both. I got them to send me a Control Board after discussing my troubleshooting and that I had a neighbor (me) that was a repair tech who would install. I also had to send them copy of my warranty not sure why they beeded that my machine was on file with them.
In your console you will find a Troubleshooting guide if you haven’t pulled it out already. It has the schematic for the machine which I find handy. If you want a soft PDF copy of the schematic I can e-mail you. Just ping me at dh1200s@yahoo.com. I use that for one-way contact, just respond back on this post if you ping me, I don’t check the account for month’s at a time.
With my limited knowledge I will try to help you. Good luck. Rich

Posted on Jun 20, 2009

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  • 109 Answers

SOURCE: maytag neptune mah3000aww spin problem

there are 2 wires going back to the board. They connect to a blue harness. Make sure their is continuity thru the harness. It connects to 3 out of balance swithches. Also check to see if lock light comes on.

Posted on Jul 07, 2009

sclarke7
  • 222 Answers

SOURCE: Neptune MAH3000AWW washer will not drain

First and foremost unplug the unit
remove back panel
remove hoses from pump (expect water have towels handy)
open pump by removing screws
remove foreign objects if any
check impeller blades to ensure that they arent worn down
rebuild and reinstall pump
or replace pump reconnect hoses, replace rear panel
you should be good to go

Posted on Sep 10, 2009

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