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Tom Johnston
Tom Johnston, Home Appliance Technician
Category: Appliance
Satisfied Customers: 8007
Experience:  20 years experience
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My Whirlpool Dishwasher DUB500XX-3 does not run. I have power

Resolved Question:

My Whirlpool Dishwasher DUB500XX-3 does not run. I have power to the switch. I put in a new timer. Still nothing. What's up with that?
Submitted: 4 years ago.
Category: Appliance
Expert:  Tom Johnston replied 4 years ago.
What does it do when you start it?
Customer: replied 4 years ago.
Well, nothing, Tom. It does nothing.
Expert:  Tom Johnston replied 4 years ago.
That model# XXXXX not work can you double check it on the inside of the dishwasher?
Customer: replied 4 years ago.
How 'bout DU8500XX-3?
Expert:  Tom Johnston replied 4 years ago.
When you said you have power at the switch do you mean the door lock.
Customer: replied 4 years ago.
That's right. I have power to the black wire on the right side of the door lock. When I push the handle down, I have power on the lower left hand wire. Of course, I don't know if the power is passing through when the latch is closed. To be honest, I don't understand how the latch closes the circuilt
Expert:  Tom Johnston replied 4 years ago.
The latch pushs on the micro switch and closes the contacts inside to allow power through.You may have a bad door lock switch.
Customer: replied 4 years ago.
Well if that were the case, I'd have no power when I activated the switch by hand, right?
With the switch exposed, I have power on the right side and no power on the left. I push the switch down (the on position), and my meter shows me 115 VAC.
Expert:  Tom Johnston replied 4 years ago.
Are you testing across both leads on the switch.
Customer: replied 4 years ago.
I'm not sure I understand your question. I have 4 male plugs on the switch. With my black lead on the safety ground, I have power to the black wire - top right. When I push the switch down, I have power on the lower left - across the switch. Is that what you're asking?
Expert:  Tom Johnston replied 4 years ago.
So it is letting power through to the timer?
Customer: replied 4 years ago.
That I don't know. Let me take the door apart again, and I'll get back to you
Expert:  Tom Johnston replied 4 years ago.
OK
Customer: replied 4 years ago.
OK, here we go. There are 4 wires to the switch. Those on the right are black and brown. Those on the left are white. With the latch in the closed position, I have power to both the brown and the black wires and the lower white wire. The upper wire only shows a couple of volts. There is some discoloration around the covers of the male terminals on the switch.
This failure gave no warning. The dishwasher worked, and then it didn't.
Expert:  Tom Johnston replied 4 years ago.
The problem is with the door lock switch it needs to be replaced.
Customer: replied 4 years ago.
We are almost done, Tom. Can you tell me how you came to that conclusion?
Expert:  Tom Johnston replied 4 years ago.
You said one wire is not getting power so the switch is not letting power through.
Tom Johnston, Home Appliance Technician
Category: Appliance
Satisfied Customers: 8007
Experience: 20 years experience
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