I've noticed that sometimes in the mornings the mvp is cold to the touch and the settings are reset to 4.0 volts. I usually keep it in wattage mode around 35. It will also not fire for at least 5 or ten minutes. It reads the atomizer just fine but the moment I fire it I can hear a faint beep and it resets again. Any idea as to why? Could it really just be my AC is too low?