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- > Do-It-Yourself Appliance Repair Help > The Laundry Appliance Repair Forum > Maytag Neptune (MAH4000AWW) stops on rinse cycle

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Maytag Neptune (MAH4000AWW) stops on rinse cycle  Rate Topic 
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 Posted: Sat Feb 11th, 2006 06:50 am
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billd
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I am hoping someone can help me figure out this problem.  I have a Maytag Neptune Model MAH4000AWW which I purchased back around 1998-1999.   I had some problems with this washer early on, but the Maytag warranty covered them all (the motor control board was replaced 3 times).   Since then the washer has been working without problems until a couple of days ago.  The washer started to stop (i.e., turn off like the stop button was pressed) during the rinse cycle.  I tried starting it back up by advancing the timer a little and pressing the start button.  It would continue and then eventually stop again when it got to the next rinse cycle.  At first the washer was stopping at 2nd or 3rd rinse cycle when the wash cycle was started from the beginning of a normal load wash, but now it is always stopping at the first rinse cycle.  I sat and watched the washer to see what is happening at this point and all I see is the washer running through the tumbling (agitating) process when the timer reached rinse cycle 1 and the washer click and the power light goes out and the washer stops.  The door lock light remains on for another minute (and the door remains locked until the light goes out).  If I do nothing, the timer will stay pointed at rinse cycle 1.  If I advance the timer a little, the drain pump turns on and the washer starts tumbling again.  As I am not the one the usually uses the washer, I don't know exactly what happens in the rinse cycle but I assume it should go through a draining and refilling process, however it does not appear to refill.  The drain pump continues to run while the washer tumbles (no high speed spin) until the timer reach the next rinse cycle where it stops again.  I have advanced the timer to the last high spin cycle and that cycle appears to run ok.

 

I opened up the washer to do a visual inspection and did not see anything unusual.   I found wiring diagram/diagnostic sheet inside the back of the top control panel and ran some of the diagnostics that I thought may apply.  I ran the three drive system diagnostic tests (i.e., Drive System Diagnostic Test, Drive System Phase Lost Test, and Drive System Phase Continuity Test) and it passed all of them.  I checked/tested the door light wax motor, door lock light switch, and door lock spin enable switch and they all checked out ok.  I visually inspected the both control boards (i.e. Machine Control and Motor Control) and saw no signs of damage.   Since the drive system passed all of the tests I was thinking the problem may be with the Machine Control board, but I don't know how to go about testing it.  I would appreciate any help I could get on this.

 

HELP!

 

Bill  :yikes:

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 Posted: Sat Feb 11th, 2006 10:01 am
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You have a time fill to prevent bad floods. IF the pressure switch is not satisfied after about 5 minutes, the unit shuts off. Start the unit in wash on a hot fill, check the pressure coming in. Stop the unit and advance it to a rinse and start the unit. Compare the pressures. Was the hot stronger? If so, inspect your inlet hose screens to make sure they are not clogged on the cold side. YOU MUST CHECK THE COLD ON RINSE! On wash, the thermistor adds hot water trying to get the cold to about 80 degrees and you can be fooled. In rinse, it is a straight cold water fill......  



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 Posted: Sat Feb 11th, 2006 04:57 pm
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billd
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I appreciate the quick response.  That was the problem.  I hate to admit this but my cold water line was shut off for some reason.   I was doing some plumbing work on the sink next to the washer and must have shut it off.  Anyway, this web site is great and saved me a $137.50 for the service call I had schedule (but now can cancel).  I would have felt like an idiot if I had to pay the service guy to turn my cold water line back on.  Thanks for the help. :)

 

Bill

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 Posted: Wed May 10th, 2006 02:40 pm
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DTMartin
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On wash, the thermistor adds hot water trying to get the cold to about 80 degrees and you can be fooled.

I'll be danged. I've always suspected that the washer was mixing in hot water with cold even when set on cold. Now I know I wasn't going crazy and that the washer isn't defective. Thanks for that tip.

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