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matag front load #mah9700aw keeps filling and no drum rotation


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6 replies to this topic

#1 mrfixit3

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Posted Today, 02:37 PM

this unit will fill half way up the front glass  until the main board kicks pump on  with OE code .replaced the pressure switch.  checked the pressure switch hose ,no cracks or holes. water valve not stuck on.no movement from basket. getting 3E or sometimes BE codes.motor and sensor ohm out exactly as per tech sheet.i understand what the codes mean but motor checks out. bad board?thanks.



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#2 weswayne

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Posted Today, 02:57 PM

http://appliantology...nd-dc-bulletin/



#3 mrfixit3

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Posted Today, 04:36 PM

thanks, I've seen that bulletin   already.checked all of that and its fine. doesn't explain why it won't stop filling.



#4 weswayne

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Posted Today, 05:06 PM

Have you checked your DC voltage at the control board for the sensor per the tech sheet during initial fill?

CN3 connector pin 6&7 = 2.5V DC, 25.8 KHz

CN3 connector pin 6&8 = 2.5V DC, 25.8 KHz



#5 weswayne

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Posted Today, 05:14 PM

http://en-us.fluke.c...multimeter.html



#6 mrfixit3

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Posted Today, 06:42 PM

thanks. I have 2 digital meters and neither has hz. but I did get 2.5 vdc on each.


I just feel that the board is holding the valves on and not switching power to the motor. does this make sense? thanks


especially where the motor ohms out good.



#7 weswayne

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Posted Today, 06:47 PM

give a new control board a try and let us know what you find out.






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