Surface stains are usually caused by water or detergent residue. Using a mild detergent and a damp cloth will remove most spots. If you've already tried that and the stains remain the same, use a small amount of Cerama Bryte cooktop cleaner.
Caution: Clean and dry the affected area immediately. Any residual cleaner or water that is not removed will result in more stains.
To remove surface stains from the metallic finish on the door, follow the steps below:
Dispense a small amount of Cerama Bryte onto a clean, damp, non-abrasive, cloth.
Clean the affected area by gently scrubbing in a repeating circular motion.
When finished scrubbing, use a clean, damp, microfiber cloth to clean off the area.
Use a clean, dry, microfiber cloth to dry the area.