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whirlpool m#wtw4850xq1


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5 replies to this topic

#1 bmmc

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Posted 15 December 2012 - 01:57 PM

at plug in lid will lock & unlock several times.red lock light stays on.no other functions.unable to activate the service diagnostic mode after numerous attempts.power button has no effect.replaced main control board but no change.lid does lock & contacts in lid switch show good continuity when lid is locked(red & white wires)have service manual  but not much help.any ideas on what to check from here?



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#2 DurhamAppliance

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Posted 15 December 2012 - 02:13 PM

Check the pump and discharge tube for failure/ obstruction

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#3 nickfixit

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Posted 15 December 2012 - 10:01 PM

It's a good idea to try a new door lock, we've seen them that whirlpool tech line said it needed a control, but a door lock fixed it. Also check for broken wires at the motor, capacitor, shifter, and pump. Whirlpool tech told me they are finding breaks in the red wire coil loop under the tub too.


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#4 bmmc

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Posted 16 December 2012 - 11:30 AM

pump is ok,runs fine on bench & no obstructions.red coil ok,reads good continuity with meter.no broken wires any where.did not have new door lock but old one checks fine on bench & in machine.locks door closed & contacts show coninuity in closed position.don't want to get into the shotgun approach & throw parts at this thing until it is fixed.



#5 fairbank56

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Posted 16 December 2012 - 01:14 PM

  Check for 13 volts DC at control board J-2 between gray and black wires.

 

Eric



#6 DurhamAppliance

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Posted 16 December 2012 - 02:10 PM

When I don't know how to proceed next, I look to the teachings of Sun Tzu. One of his basic principles is to "know your adversary. " That doesn't mean simply learning about him (like reading a service manual) but try to think like he thinks. So applying this principle to our situation, let's think like the washer. We know board is good so it should be thinking as a normal washer....ok.....press the start button...the machine thinks "....let's lock the door so the silly human won't put his hand in here and hurt himself......okay lock is good so let's rock and roll....hmmm nothing happening. Let's start over....unlock the door...okay lock it again and let's roll.....hmmmm no go...etc.. "

So what would cause the machine not to start up and cause locking and unlocking? .....capacitor and/or motor. If all wires are okay, I'm with Sensei Nickfixit and Sun Tsu on this one

Edited by DurhamAppliance, 16 December 2012 - 02:12 PM.

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