Here is the tech sheet
http://www.servicematters.com/d...0Sheet%20-%208530866.pdf

Here is a manual which may be useful
https://secured.whirlpoo...520548/$FILE/8178022.pdf

I would try cleaning the control panel ribbon cable connection.
If this does nothing, check the control panel switches with a meter as per the tech sheet.

Do not understand why the two control boards act differently and washer will not run.
I cannot explain why the boards act differently.
Why the washer does not run could be that you have a control panel problem.

Connector Cleaning / Checking
Unplug the unit
Open it up
Remove the ribbon cable from the keypad to the control board at the control board.
Clean the edge connector.
If it is the type where there is not a connector just the insulation is removed, it can be cleaned with a pencil eraser. Do not use an ink eraser as it is too abrasive.
Check the tracks in the ribbon cable for hairline cracks. A magnifying glass helps here.
Would not hurt to clean the connector on the board. Use electronics contact cleaner or isopropyl alcohol and a tooth brush. Be gentle and do not reconnect till all the solvent evaporates.
Reconnect everything and give it a try.