Oven cavity is not evenly heating; one side of food burns while the other is undercooked.

Safety first: Turn off power and allow the oven to cool before inspection.

Steps:

• Element inspection: Check the bake and broil elements for uniform glow when heating. Dark spots or uneven glow indicate a failing element.
• Rack placement: Avoid placing pans too close to one side or directly against the walls. Use the center rack position for most baking.
• Convection (if equipped): If your Premier oven has a convection fan, ensure it runs during convection mode and is not obstructed by foil or pans.