The wireless control system includes a wireless adapter and a household electrical appliance. The wireless adapter includes a wireless module transmitting/receiving wireless signal, a wireless control unit analyzing and converting the wireless signal and controlling the wireless adapter, and a wireless display unit displaying wireless communication state by the wireless signal. The household electrical appliance includes an appliance control unit communicating with the wireless adapter and controlling the household electrical appliance, an appliance storage unit storing wireless setting and wireless state of the wireless communication, an appliance display unit displaying stored content of the appliance storage unit, and an appliance operation unit receiving request for the wireless setting from user by a user operation, and the appliance control unit controls power consumption of the wireless module and the wireless display unit based on the wireless setting stored in the appliance storage unit from startup time of the wireless adapter.