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FIXED WDT730PAHZ0 Whirlpool dishwasher not heating

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cccloth

Premium Member
Joined
May 28, 2021
Messages
6
Location
Forest Lake, Mn
Model Number
WDT730PAHZ0
Brand
Whirlpool
Age
1-5 years
Dishwasher is 3 years old. Already had to replace circ pump. I now believe heating element isn't working as all the dishes are wet when finished.

Ran diagnostic, came back with e1 f7. Looked in the service tech manual. Something about heating but not sure what I need to do to determine if element needs to be replaced, if it's a control board issue, or if it's time to junk this POS?

Never cleared any errors after I replaced circ pump, so maybe that’s the issue and I just need to do that? Let me know.

Any suggestions appreciated. Thanks.

Chris
 

cccloth

Premium Member
Joined
May 28, 2021
Messages
6
Location
Forest Lake, Mn
Ran through full diagnostic cycle as suggested on some other threads and still showing same error message, so I am assuming something is still broken?
 

Jake

Appliance Tech - Admin
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121,843
Location
McMullen Valley, Arizona
Hi Chris, I always ohm test the heating element first, make sure your breaker is OFF to your dishwasher when ohm testing.

Here's the heating element for your model you can order if yours is bad:
Heating Element W10518394


Watch this video to ohm test the heating element:


Watch this video to replace the heating element or to access the element terminals which are all the way in the back.


Also ohm test the high limit thermostat:
High Limit Thermostat WP661566


Watch this video, it shows you how to access/replace it:


Let us know what you find.

Jake
 

cccloth

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Messages
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Location
Forest Lake, Mn
Thanks will give it a try. Do I need to clear error codes as well from when circ pump quit? How do I do that? Wasn’t sure when I press “hi temp”?
 

Jake

Appliance Tech - Admin
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I'm attaching your tech. data sheet below.

NOTE 2--->Press Hi Temp or cycles key in this interval to clear customer error history.

--->Press Hi Temp or cycles key in Interval 25 on Page 12.

Jake
 

Attachments

  • Tech Sheet - W10904613 - Rev B.pdf
    3.3 MB · Views: 63

cccloth

Premium Member
Joined
May 28, 2021
Messages
6
Location
Forest Lake, Mn
Thanks Jake, I found this under the kick plate, it just wasn’t clear to me, as a novice, when to press high temp. What is the 25th interval? Thanks.

Chris
 

Jake

Appliance Tech - Admin
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Ok Chris Look here:

Screenshot 2021-05-30 12.05.00.png
 

cccloth

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Joined
May 28, 2021
Messages
6
Location
Forest Lake, Mn
Thanks Jake. Following, I think. So after the last error code is shows on the screen, there is 10 seconds when cycle 1, hi temp, start resume leds are on. That’s when I press hi temp to clear error codes?

how can I verify codes have been cleared? Run diag again and see what shows up?

sorry for the rookie questions.
 

Jake

Appliance Tech - Admin
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121,843
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So after the last error code is shows on the screen, there is 10 seconds when cycle 1, hi temp, start resume leds are on. That’s when I press hi temp to clear error codes?
Exactly right!

how can I verify codes have been cleared? Run diag again and see what shows up?
Yes, exactly.

Jake
 

cccloth

Premium Member
Joined
May 28, 2021
Messages
6
Location
Forest Lake, Mn
No continuity on the heating element. Installed a new one. Had continuity on the thermostat so didn't replace that. Cleared error codes and ran diagnostic cycle and no error codes. Ran a 1-hr cleaning cycle and I got dry dishes, mostly. Thanks for the help Jake!
 

Jake

Appliance Tech - Admin
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Aug 24, 2004
Messages
121,843
Location
McMullen Valley, Arizona
Excellent Chris, glad to hear the new heating element fixed it.(y)

Thanks for the update!

Jake
 
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