The interior light keeps turning on and off after a while while the food is cooking. I don't know why this happens; it's not mentioned in the manual. And the touchscreen is terrible. Sometimes it works, sometimes it doesn't, even after pressing it several times and trying different buttons. The food cooks well, and I'd really like to keep this air fryer because it's made of glass and doesn't produce toxic substances. However, the quality of the equipment itself isn't good, unfortunately. I'll have to return it.