Verify the product is securely plugged into a working power point. Once verified make sure the door is sealing tightly. If the door is not sealing properly please refer to our door seal FAQ. If the issue persists please be with your product and contact Hisense Customer Support on 800 447 367. Hours of operation are Monday to Friday 8:30am to 7:30pm AEST and weekends from 9am to 5pm AEST.