This is not yer mama's water heater, Trout
It has a thermister (instead of the traditional thermostats), which feeds a control board. It's made by American Water Heaters...perhaps they have a tech sheet somewhere.
Abhersh, have you tested either element with an OHM meter before blindly ordering it? Elements are sort of a pain to change, especially if not needed. Also, provide where you heard about the control problems if you will.