Check fuse in plug. Check socket by plugging in another appliance. Refer to dealer for checks. Excessive steam comes out from under the lid. Lid a not seated correctly because, Top part of bottle rack has been left out Arrangement of bottles inside is too high, preventing the lid from seating Bottles come out with marks or flakes stuck to them.
Appliance needs descaling using white vinegar.
Add 2 teaspoons of white vinegar to 200ml of water. Water leaks from underneath. Hot plate sealing ring is defective - return sterilizer to your retailer. Sterilizer does net switch off, resulting in overheating. Check whether start switch stuck in down position.