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Communication Error? WFW9200SQ00


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4 replies to this topic

#1 bimbbobway

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Posted 26 July 2013 - 10:35 AM

So we have a repeating F71 communication error between ccu & user interface. We have already replace the ccu, user interface boards, & the harness connecting the two. Twice. And now we are getting an F70 a communication error between the same boards. Is there anything else we missed? Could the motor control be causing this as well as I know there is separate error codes for this as well. Any ideas will be appreciated.
www.mrappliance.com/wilmington

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#2 KurtiusInterupptus

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Posted 26 July 2013 - 10:38 AM

90% I find that the MCU is the cause for this...try unplugging the 3 blue wire harness connector from the MCU...if the unit responds normally (except motor function of course) this is it.
As every cockroach knows , thriving on poisons is the secret of success.

#3 Samurai Appliance Repair Man

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Posted 26 July 2013 - 11:11 AM

90% I find that the MCU is the cause for this...try unplugging the 3 blue wire harness connector from the MCU...if the unit responds normally (except motor function of course) this is it.

 

 

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MCU part link:  http://www.repaircli...ber=WFW9200SQ00

 

Motor-Control-Board-8183196-01584699.jpg



#4 nickfixit

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Posted 27 July 2013 - 05:36 AM

I've had 2 in the last week that needed the MCU for the same issue, fixed them both.
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#5 bimbbobway

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Posted 29 July 2013 - 04:11 PM

Thanks guys. Had a feeling it might be. Was thrown off by the fact that the washer worked for a few weeks after replacing the UIB & ccu. Again thanks
www.mrappliance.com/wilmington




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