GE Profile ovens may eventually require calibration so that the internal temperature of the oven matches the temperature set on the control panel. If your oven is out of calibration, it may severely affect the cooking times of prepared food. To test whether your GE Profile oven requires calibration, GE recommends purchasing a can of biscuits from the grocery store, then cooking them according to the manufacturer's instructions. If the biscuits are undercooked after the suggested cook time, you should calibrate the oven.
Determine by how many degrees the oven is misconfigured. To do this, place a calibrated oven-safe thermometer in the oven. Set the oven to 400 degrees. Look at the oven temperature shown on the thermometer when the "Preheat" light turns off, indicating that the oven temperature should be at 400 degrees. Subtract the difference between the two numbers to determine by how many degrees to increase or decrease the oven temperature.
Locate and hold both the "Bake" and "Broil HI/LO" buttons for two seconds. Release the buttons when the display reads "SF."
Press the "Bake" button once again, at which point a two-digit number will appear on the display. This number represents the number of degrees that the oven temperature will be raised or lower.
Press the "Up" arrow button to increase the number, or press the "Down" arrow button to lower the oven calibration.
Press the "Start" button to save your settings.