|Joined: ||Fri Feb 10th, 2006|
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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.