My Whirlpool oven takes up to 60 minutes to reach desired temperature. The preheat "beep" goes off when it should but oven will only be at 150 degrees or so. We did have one of the wires to oven element burn off and we had it replaced. Don't know what caused that problem. Shortly after a code appeared in the cook top control panel..E2-F3-
We had the temp. oven probe changed, recalibrated the oven and it still takes forever. Once it reaches the temp. it bakes fine. Everything else is working great on this stove. I hate to go and buy a new range if this is an easy and inexpensive repair. Thanks so much, looking forward to replies.