I bought model #NE59T4321SW at the end of January for my in home bakery. The oven will not maintain its temperature. I set the temperature for 350. It will preheat and beep that it is set. I have my oven thermometer inside and have noticed that it takes an additional about 10 minutes from the time it beeps to actual reach the temperature. I place my items in to bake and when the timer goes off, they are not done. The panel still reads 350 but when I hit to set the temperature, I enter 350 and it shows that the current temperature is done to low 300s or high 200s. I have unplugged the oven to reset. I have tried calibrating the thermostat. Nothing is working!! It is very frustrating since this model had high reviews when I bought it. I bought it with the convection so that I am able to use both racks.
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