A:AnswerUnlike a traditional oven, this one does not have a temperature indicator to let you know when it reaches the desired temperature. Some have recommended adding a few more minutes to the timer when you start heating to allow it to warm up to the proper temperature.
A:AnswerI had to contact CHEFMAN warranty to get a new oven sent out to me. I had the same issue. The oven finally died 11 months later for me after the knob issue happened. I hope you get your new oven through CHEFMAN as well.
A:AnswerSame thing happened to me as well. Luckily I had the geek squad protection on it, so they replaced it for me. Mine was only 6 months old, but I didn’t want to hassle with the manufacture over warranty and delays.