Arrived, customer stayed, Oven unit wasn't working properly. Checked unit, ran test mode. Checked amp draw, all seemed to be okay. Preheated unit and unit never came out of preheat, after 30 minutes checked and IR element set to 9000 degrees. Called factory and they had me set to 1000. Unit came out of preheat right away, tested unit, cooked in it. Seems to be working okay at this time. Okay for use.