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How do I test the door sensor on my Kenmore front load washer model 41742142100?

The lights come on and the door locks. The washer fills but will not begin the cycle. The water just sits there and the tumbler will not rock. I would like to test the door sensor but without the schematic, I don't know how. Is there something else this could be?

Kenmore , Washers
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1 Answer from this member:
Lyle W
The wiring diagram for your washer is shown in the image below. The image is difficult to read but it is the best document that I have for this wiring diagram. This wiring diagram shows that the door switch must be working since the washer fills. When the pressure switch is satisfied, it should close the contact 1 to 3 on the pressure switch to send L1 power to the speed control unit. If the wash light turns on after the fill is completed, this is one indication that the pressure switch is okay and is properly closing this contact from 1 to 3. If the timer has stalled, the light may not be turning on if the timer has not advanced to close the contact 9B. When the washer is full, try advancing the timer manually into the wash cycle to see if it will begin tumbling. If it does, then the timer is stalling. Stop the washer and completely unplug the washer for 30 seconds and then plug it back in and resume the wash cycle. See if the timer advances after disconnecting electrical power. The advancement of the timer is controlled by the speed control unit. If the timer motor advances properly after the power was disconnected and reconnected, then your likely failure is in the speed control unit. You probably have an intermittent problem with the speed control unit closing the neutral connection to advance the timer. If the timer will not advance at all, then you could have a failed timer motor or a failed speed control unit. These tips may help you determine the cause of your failure, but I normally recommend calling a service technician to verify the diagnosis and replace the needed parts.

If you want to complete this repair yourself and need more help, resubmit your question with additional details based on the above information and we will assist you further. If you are certain that you have a failed speed control unit, you can order a new one from the

Sears PartsDirect

website. The part number is 134149220. If you replace this part yourself, be sure to

unplug the washer

before accessing internal components.
by Lyle W Earned 136,245 community points in Kenmore
May 19th, 2009
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