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FIXED GE Dishwasher GDP665SYN3FS not heating water or drying

RedIron357

Premium Member
Joined
Mar 27, 2022
Messages
5
Location
Washington
Model Number
GDP665SYN3FS
Brand
GE
Age
1-5 years
Searched for this model solutions, have found none matching. Worked great then stopped heating, sanitizing, or drying, collects sludge on filters. Similar model symptoms seem to point to Turbidity sensor, Flood sensor, or TCO, if it has one. Unit is 1.5 yrs old just out of warranty. Replaced heating unit prior to finding this site with no change. Can't find manual that really helps diagnose issue without throwing parts at it. Unit is at daughter's house 1/2 a state away, would like to fix it next trip that way bringing correct parts. Thanks
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
132,647
Location
Redmond, Oregon

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
132,647
Location
Redmond, Oregon
--->The TCO is located on the right side of the tub, approximately 16 inches from the front of the tub. On your model its underneath the pump, so you will likely need to pull the dishwasher out to get access to it. Make sure you disconnect power to your dishwasher FIRST!

The TCO is in a series circuit with the heating element, if that TCO is bad(open) it will never heat.

TCO=Thermal Cut Off

Here's the TCO for your model:

Its the SILVER METAL part integrated into that wire harness. See the black button on the back of it? That's the RESET BUTTON, PRESS IT and see if that solves the NO HEAT problem.:)

Here's the photo of it:

TUBTCO (1).jpg


Jake
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
132,647
Location
Redmond, Oregon
Ok sounds good.:)

Let us know how it goes.

Jake
 

RedIron357

Premium Member
Joined
Mar 27, 2022
Messages
5
Location
Washington
Sorry for late response. I relayed the info to my daughter who was able to reset the TCO. Success! She had to reset it again last week, but so far it's worked. Thank you for your info and input.
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
132,647
Location
Redmond, Oregon
Ok, sounds good.(y)

If that TCO keeps tripping its likely getting too hot in the tub, it trips at 180 Degrees F. So her water heater may be too hot, or use a lower heat setting, or avoid using the heat boost option.:)

Jake
 
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