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Dishwasher not drying - high-limit/temp thermostat or heating element?

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Everything else seems to be working fine but the dishes are not drying. From what I've read, it may either

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  #1 (permalink)  
Old 01-20-2014, 08:44 AM
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Default Dishwasher not drying - high-limit/temp thermostat or heating element?
Model Number: DU920QWDQ3   Brand: Whirlpool   Age: More than 10 years   

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Everything else seems to be working fine but the dishes are not drying.
From what I've read, it may either be the high-limit/temp thermostat or the heating element.

Are the high-limit thermostat and high-temp thermostat the same thing? Some sites seem to have the same item with different names.

How can I confirm which is the issue?

thanks.


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  #2 (permalink)  
Old 01-20-2014, 07:45 PM
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I removed and tested the heating element as well as the hi-limit thermostat #661566

Both tested fine for continuity.

I also tested the thermostat by placing it on a griddle.. when it heated up to about 240 degrees, the circuit opened so it seems to be working as well.

What else could be the problem?

thanks
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  #3 (permalink)  
Old 01-23-2014, 02:37 AM
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Here are your parts
Parts for Whirlpool DU920QWDQ3 Dishwasher - AppliancePartsPros.com

See the attachment for the tech sheet.

Using a meter check from P6 (White/Red) on the control board to White/Violet on the door switch.
If you measure the heater resistance ( about 25 ohms) then odds are that it is a control board problem.
Attached Images
File Type: pdf DU920.pdf (650.5 KB, 4 views)
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