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GE Dishwasher GDF640HSM0SS No Power

sprout22

Premium Member
Joined
Jul 9, 2022
Messages
2
Location
Memphis, TN
Model Number
GDF640HSM0SS
Brand
GE
Age
1-5 years
Hi there, after a brief power outage at our house, our dishwasher no longer works. I can't get it to turn on, none of the resetting options from the manual work, and the outlet is receiving power. The led on the control board is blinking continually. Can anyone give me some direction?
 
Last edited:

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
132,673
Location
Redmond, Oregon
Hi,

The led on the control board is blinking continually.
That indicates your machine control board under the dishwasher is working.

Here's the service manual for your model: https://drive.google.com/file/d/1csheGsbSmPFRON5ThkhhwfvZ6saWoxHc/view?usp=sharing

Look at the service manual on page 48. This is ALL it says below. Its very vague and does not tell you how to check for proper UI Board voltage, like the older GE models did.

User Interface (UI) Diagnostics--->No display or LED’s will light.
Check for 120 Volts AC entering the main control board. If no volts are found, check the home breaker. If main control has 120 Volts AC, check to see if the service LED on the main control board is flashing. If no, replace the MC(machine control) board. If there is a flash, check the door harness and connections. Replace the User Interface (UI).

Here's the door wire harness for your model:

Here's the UI(User Interface) Board for your model you can order, if the door wire harness is good:

Jake
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
132,673
Location
Redmond, Oregon
Ohm test the door wire harness pins on each end for continuity with a multimeter.


Jake
 
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