FIXED GE GDT580SSF8SS Not Heating

[Izzy4AU]

Model Number

GDT580SSF8SS

Hi all,
I saw a few threads on this in the forum, but I have replaced the parts that seem to be the solution for others (flood switch and heating element). However, I still have no heat. Should I be looking at the TCO? Any other suggestions is greatly appreciated.

 

[Jake]

Hi Izzy,

Did you make sure the water level in the tub is high enough? If not, then it won't heat either.

Did you ohm test your old flood switch first?

The resistance across pins 3 & 5 on the flood switch should be about 11K ohms at room temp, and 1,300 ohms at 175 degrees.

In fact ohm test the new one you installed to make sure that one didn't come defective. 99% of the time the new flood switch is the fix.

Yours uses the exact same flood switch:
Float Switch WD21X10519


Look here at Patricks post#3: FIXED: GDF520PGD1BB GE dishwasher, less than 4 years old, heating element not working

Look on page 49 in the service manual.

Let us know what you find.

Jake

 

[Izzy4AU]

Hey Jake! Thanks for the response. I had a tech out today who ran a diagnostic test (running out of time to troubleshoot). Based on the test results, it seems to be the TCO has failed. Do you know where I can order the TCO without the harness? Or do I need to replace the harness with the TCO?

 

[Jake]

Did you try to reset the TCO first?

Look on Page 66 here: https://www.dropbox.com/s/79qj211m0bya8uz/31-9226.pdf?dl=0

If not, then yes you can only get it when you order the wire harness here: WD21X22616 Harness Asm

It also says to replace the control board when you replace the TCO.

Here's the control board for your model:

GE WD21X24899 Electronic Control Board (AP6972062) - AppliancePartsPros.com

This is a quality electronic control board that is primarily used in GE dishwashers. The electronic control board is tasked with managing the functions of the appliance, such as drying, washing, and draining. The control board has many small electronic parts and can experience damage that causes...

click.linksynergy.com

Jake

 

[Izzy4AU]

Replaced the TCO w/harness and we are heating again!! Thanks for the help.

 

[Jake]

Excellent.

Did you also replace the control board? It also says to replace the control board when you replace the TCO.

Jake