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GE DISHWASHER GDF645SMN0ES UI BOARD DOES NOT FUNCTION

radman434

Premium Member
Joined
Mar 28, 2022
Messages
3
Location
29003
Model Number
GDF645SMN0ES
Brand
GE
Age
1-5 years
Control panel on the dishwasher does not function. Is there a Technical Service manual on this model? Main control LED is flashing. UI Led is flashing (backside of control board) but no function of the buttons or LEDs. GE GDF645SMN0ES made in Jan. of 2020.
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
131,456
Location
Redmond, Oregon
Yes, here's the service manual for your model: https://drive.google.com/file/d/15CmFe-hcufL5XUJPsqlEN3AzwDZ6z0M-/view?usp=sharing

Page 13
Symptom: If the dishwasher is “dead”, no LED operation, no button operation or beeping occurs.
Diagnosis: Attempt placing the dishwasher in Consumer Error Mode.
Cure: The CSM (Current Sense Module) is tripped and must be fully diagnosed. Refer to On the Main Control Board CSM section of this guide. Page 48.

Here's the UI Board for your model:

Here's the machine control board for your model:

Let us know what you find.

Jake
 

radman434

Premium Member
Joined
Mar 28, 2022
Messages
3
Location
29003
Replaced the front harness on a lark and the user interface buttons still do not work nor do any of the displays or lights. Unit has been powered on and off at the breaker several times which should have reset the CSM. Again, the LEDs on the main control board and UI board (backside of board) flash but the buttons do not function. This prevents entering the Consumer Error Mode.
 
Last edited:

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
131,456
Location
Redmond, Oregon
Look on page 45 in the service manual I posted above.

User Interface (UI) Diagnostics--->No display or LED’s will light.
Check for 120 VAC entering the main control board. If no volts are found, check the home breaker. If main control has 120 VAC, 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).

Jake
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
131,456
Location
Redmond, Oregon
Yes, the UI Board seems to be out-of-stock everywhere.

Jake
 
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