How do I perform a system reset on the Miller 350P?

To perform a system reset that returns the unit to all original factory settings, press and hold the SETUP button while turning on the welding power source. SRST will appear on the left display and OFF on the right display. Rotate the left knob until ON appears on the right display, then press SETUP to apply the system reset function. Wait until the unit completely reboots before performing any other operations. (Page 29)