To ensure safe and efficient defrosting, the system allows an initial defrost time setting after power recovery, preventing simultaneous defrost operations. Users can select between heated defrost and fan defrost, with multiple display options available for temperature readings during defrost cycles. To protect stored goods from freezing damage, the system includes a heating mode. For convenient external monitoring, the controller is equipped with a built-in RS-485 communication port (MODBUS RTU), enabling seamless integration with HMI systems.