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FIXED GE Dishwasher GDT665SSN0SS H20 Error - replaced water inlet valve - still getting error

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Franner11

Premium Member
Joined
Mar 18, 2022
Messages
5
Location
Memphis
Model Number
GDT665SSN0SS
Brand
GE
Age
1-5 years
Hello! I am having a hard time diagnosing the trouble with my dishwasher. I was getting the H20 error code, so I did the following:
1. Checked all hoses - no kinks or blockages
2. Checked hot water pressure - very good flow, no issues
3. Replaced water inlet valve - old one was not dirty or clogged, but replaced anyway

After installing the new water valve, the dishwasher ran fine for one cycle with no errors.
Tried to run the dishwasher again and I immediately got the h20 error code again. So, I unplugged the dishwasher in hopes it would reset and now I get the H20 error code again and again.
I am having a hard time determining if my model has a flood switch or not - extremely hard finding the right parts online.

Also, I tried to get into service mode, but it only lights up all lights on the user controls, blinks several times, then shows a 0 on the display and the locked button is lit up. Frustrated!

Can you help me figure out what else I need to troubleshoot and or replace before I spend a fortune on a service call?
Thank you in advance!!
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
131,214
Location
Redmond, Oregon
I located a service bulletin on this issue.

I'm attaching it below.
 

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  • DD01-19.Rev1.pdf
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Franner11

Premium Member
Joined
Mar 18, 2022
Messages
5
Location
Memphis
So I unplugged it and "reset" it again and it seemed like it was going to run. I set it up on a "normal" cycle for 128 minutes. Water filled, seemed like it was going through the correct motions...got to about 1 hour left and shut off, so I don't think it completed the cycle, except the dished were clean and wet. The finished light (white near the handle) was not on and neither was the "clean" light.
I am thinking all signs point to replacing the control board.
Also looks like my serial number does not fall within that service bulletin...although I may be wrong.
 

Franner11

Premium Member
Joined
Mar 18, 2022
Messages
5
Location
Memphis
I am finding the following: Part WD21X25699 has been superseded to Part WD21X25992.
Is WD21X25992 what I need to buy?
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
131,214
Location
Redmond, Oregon

Franner11

Premium Member
Joined
Mar 18, 2022
Messages
5
Location
Memphis
Thanks so much for confirming, Jake. I'll post an update after the install. Appreciate your help! :)
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
131,214
Location
Redmond, Oregon
Ok sounds good!

Jake
 

Franner11

Premium Member
Joined
Mar 18, 2022
Messages
5
Location
Memphis
Changing the control board did the trick - running the dishwasher right now with no H2O errors.
Installation was a piece of cake - didn't even need to move the dishwasher for the swap out.
Thanks so much, Jake! Really appreciate your help!
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
131,214
Location
Redmond, Oregon
Excellent @Franner11 glad to hear the new control board fixed it.(y)

Thanks for the update!

Jake
 
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