Frigidaire Professional Series 24 in. Built-In Dishwasher Dishwasher "hold lock mean frigidair" Questions

...My Frigidaire (made by Electrolux) has a child lock feature that is deactivated by pressing and holding the "Cancel" button for three

lock that is telling me to "hold to unlock" not sure what that means, so tried this morning to "hold" nothing happened as need to run the machine, and right now there is no response. HELP!!!!!!! CHECK

...He did give me a hint by suggesting I open the door and take the panel off. I did and low and behold there is a paper with scematic and code definitions cliped inside. After reading that the Er