Author Topic: Maytag MAH8700AWW Neptune Front Load Washer with dreaded ND  (Read 4223 times)

Offline dlachermeier

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Maytag MAH8700AWW Neptune Front Load Washer with dreaded ND
« on: November 07, 2012, 02:51:56 PM »
Hello, I have a strange one for ya.
I have my 6 year old Maytag front load washer giving me an ND error when it gets to the drain cycle.  I have done the diagnostic checks, both Input Test and Output Test and found that when I was in the Output Test and got to the Drain Pump test, the drain pump did not work.  That was the only test that didn't work.  I have since checked the voltages on CN5 - pin 1 and CN10 - pin 6 and had 120VAC on both.  When I check at the pump terminals, I only get like 1 or 2 VAC.  I took the pump out and hooked it directly to 120VAC line and it works just fine.

My question is there someplace inbetween the CN10 - pin 6 and the terminal to the drain pump ?  The schematic diagram that I have that came with the unit shows a black wire on CN10 - pin 6 and the other side of the drain pump also, but on the actual terminals on the drain pumb, one terminal has two blue wires going to it and the other terminal has one black wire.

I don't want to purchase a Main Control Board it there is something else in the path of the drain pump that is dragging the 120VAC down.  I also noticed that even with the power turned off, there is 120VAC to CN10 - pin 6,7,and 8, is this normal.

Thanks in advance for any help.

Offline Ol' Lonely

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Re: Maytag MAH8700AWW Neptune Front Load Washer with dreaded ND
« Reply #1 on: November 08, 2012, 08:22:37 AM »
ND = The water level fails to drop below the Low Water level reset within 15 minutes, before a spin begins.
   
Here is the service manual.
http://appliancejunk.com/forums/index.php?action=downloads;sa=view;down=370

Component Checking

Drain Pump - During drain check voltage at Pin #1 of CN5 and Pin #6 of CN10

Quote
My question is there someplace inbetween the CN10 - pin 6 and the terminal to the drain pump ?
No, if you don't have voltage to the pump replace the control board.

Parts & Diagrams for model MAH8700AWW

     
"Depend on us."

Offline dlachermeier

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Re: Maytag MAH8700AWW Neptune Front Load Washer with dreaded ND
« Reply #2 on: November 08, 2012, 10:34:25 AM »
'Ol Lonely, thanks much for your reply.  I did order a new control board yesterday since I could't think of anything else it could be.  Hopefully that will take care of it.  I'm still baffled on why I see 120VAC at CN10 pin 6 and not across the pump terminals, but if the board takes care of the problem, I won't care.  Thanks again, David.

 

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