OpenEVSE is shipped to Auto detect Level 1 or Level 2 in the United States on Split Phase AC. 

If using OpenEVSE internationally on 208 - 240v AC, set the Service level to Level 2.
  • Press and hold button to enter the Menu
  • Quickly press the button to run through the options 
  • Select (Press and hold) "Service Level" or "Setup" (then "Service Level" on newer firmware) 
  • Quickly press the button to run through the options
  • Select (Press and hold) "Level 2" 
  • Exit Menu


To change the settings without a LCD and push button, here is more information:

Changing settings without LCD and push button