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GDT550HGD0WW GE dishwasher does not heat

Mcnabb75

Premium Member
Joined
Sep 26, 2018
Messages
107
Location
Greenville SC
Model Number
GDT550HGD0WW
Brand
GE
Age
6-10 years
Hey,
So the dishwasher does not heat. Checked the heating element, it is good. It also heats in diagnostic mode. Thermostat is good otherwise it wouldn't heat in diagnostic mode.
There are no error codes.
Checked the thermistor, which I believe is in the turbidity sensor...? Tech sheet wasn't very clear but I did check a thermistor from one of the diagrams insert pictures. Checked out ok.

I did replace the float switch to no avail.

Thank you in advance
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
122,725
Location
McMullen Valley, Arizona
When it heats in diagnostic mode and not in any wash cycles, then problem is the software in the control board is not turning it on when its suppose to.

You will need to replace the control board to fix it.

Here's the control board for your model you can order:
Control Board WD21X22276


Jake
 

Mcnabb75

Premium Member
Joined
Sep 26, 2018
Messages
107
Location
Greenville SC
Ah. That's what I was leaning towards but didn't want to take that leap.
Thanks for the help and shall let you know.
 
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