FIXED WDT750SAHZ0 Whirlpool dishwasher fills but won’t spray

[Claytonda]

Model Number

WDT750SAHZ0

Brand

Whirlpool

Age

1-5 years

Alright I ran through the forums and having similar issues. The dishwasher fills but won’t spray. I pulled circ pump cleaned it and tested it on the bench. With a 120v it runs no issues. Put it back in the unit and it won’t run. I tested pump feed and during a cycle it sits at 54v and with jump to 114v and back to 54v. Is it pump or is it control board? I’m not a fan of just throwing parts at something especially when each of these is $300 a piece. Any input?

 

[Jake]

Hi, disconnect power to the dishwasher and ohm test the wash motor, normal would be 5-15 Ohms.

Here it is for your model: W11084656 Dishwasher Circulation Pump

Here's another member with this similar issue:

FIXED - Kitchenaid Dishwasher KDFE104HBL0 not cleaning, wash motor voltage 95V

Hi, I'm having a problem with my Kitchenaid KDFE104HBL0 dishwasher in that it no longer cleans, and just leaves a sad-looking blob of soap inside. All the symptoms pointed to a faulty circulation pump motor, so I bought a new assembly that included the pump motor, the diverter motor, and the...

www.applianceblog.com

His KitchenAid and your Whirlpool use the exact same Circulation wash motor pump.

 

[Claytonda]

I did that. It’s at 9ohms

 

[Jake]

Ok, good.

When the wash motor is getting 115 to 120 volts to it, it should be running, if not its bad.

Here's how I do it in this thread, and advise others to do it the same way:

FIXED - Whirlpool Dishwasher WDT750SAHZ won't wash after fill

It's 2.5 years old and this is the first issue. When I start a cycle, it sounds like some water is coming in, and I can feel the water inlet hose is warm, however, there's no water in the bottom of the tub. After a minute or so it goes quiet and just sits there. The "Washing" light is on...

www.applianceblog.com

 

[Claytonda]

Well put a wash motor in it tonite and she’s working like new. Thanks!

 

[Jake]

Excellent, glad to hear the new wash motor fixed it.

Thanks for the update!