I had this no-spray problem on my Kenmore (=Whirlpool) dishwasher on and off for several years and think I've finally fixed it. Six months ago, I replaced the circulation motor, and the spray returned. Problem solved, I thought. Then it returned. Was the problem my non-OEM motor from Amazon? I pulled out the dishwasher, tipped it forward onto a pillow for easiest access to the circulation motor, pulled the motor, and tested it with 120V. It ran fine. Then I set put the motor back in, disconnected the wire harness, set the dishwasher upright, connected a volt meter to the harness and started a new cycle. Once the tub filled and the spray cycle started - humming but not spraying - the output from the wire harness read 120V!
I'd read: "If you get 120V at the harness, replace the motor. If you get nothing, replace the controller board." But here I was getting 120V (=good controller) and I had a working motor! WTF?
So I plugged the harness back in, and the motor started up... until I pulled my hand away. Pressing or jiggling the harness started the motor, until I released pressure.
So - I had a faulty motor connection or a faulty harness connection. I unplugged the dishwasher and pressed a screwdriver against the motor's electrical posts. They were rock solid. Unlikely to be the problem. The two contacts inside the harness however, seemed well-recessed. I used a thin, pointy ice pick to pry the contacts back out a bit. They were pretty stiff, and held their new "tighter-grip" position well. Plugged the harness back in and the motor ran. Tugged and jiggled the harness and the motor still ran.
The dishwasher has been running fine for several days now.
Bottom line: I suspet the problem the whole time may have been a bad wire harness. That would explain the intermittent nature of the problem, and how swapping out the motor "fixed" it, but only for six months. So if your dishwasher isn't spraying, pull it out of the cabinet, lie down on the floor, and press/jiggle the wire harness while the dishwasher is upright and in a spray cycle. If that starts the spray, then your problem is in the harness=to-motor connection. Bend the contacts.
댓글 6개
I have the same issue, water will fill (now that I replaced the water inlet valve) and I replaced the float switch. Nothing happens once the water has filled. I have cleaned both top and bottom stems as well as cleaned all screens on the bottom. Help me please!!
Jeff Landress 의
definitely not the circulation pump in my case since I replaced it myself. PARTS are so expensive to replace. Inlet valve works, drain switch works. I think its my motor but already spent 200$ on parts and don't want to spend $126 for a new motor.
Amit j 의
@Amit j ,
Check if there is voltage getting to the circulation pump motor terminals. if there is then it is the motor or the start capacitor if it has one - you didn't state the make or model number
jayeff 의
Heres the model number MDB4949SDE3 hmm didn't check that yet...didn't know that motor has a capacitor.
Amit j 의
In my case I ordered whole new one and thats not it. I didn't measure any dc voltage at 2 blue wires coming from motor to the circulation water pump.
Amit j 의
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