Abstract: An air conditioning system which has a plurality of indoor units installed inside of a predefined space for performing air conditioning and an outdoor unit installed outside of the space for controlling the indoor units, and a method for controlling the same. The indoor units store unique production numbers assigned respectively thereto in manufacturing processes thereof, and the outdoor unit recognizes the production numbers of the indoor units and automatically sets addresses in the indoor units on the basis of the recognized production numbers. Therefore, in an installation process, an installer need not personally set addresses in the indoor units one by one, resulting in greater convenience of installation. Further, as compared with conventional air conditioning systems, a period of time required for the address setting and an error occurrence probability can be reduced.

Abstract: An air conditioning system which has a plurality of indoor units installed inside of a predefined space for performing air conditioning and an outdoor unit installed outside of the space for controlling the indoor units, and a method for controlling the same. The indoor units store unique production numbers assigned respectively thereto in manufacturing processes thereof, and the outdoor unit recognizes the production numbers of the indoor units and automatically sets addresses in the indoor units on the basis of the recognized production numbers. Therefore, in an installation process, an installer need not personally set addresses in the indoor units one by one, resulting in greater convenience of installation. Further, as compared with conventional air conditioning systems, a period of time required for the address setting and an error occurrence probability can be reduced.

Abstract: An operating method for a room air conditioner(RAC) which is capable of enhancing an alertness level of a user based upon a human electroencephalogram(EEG), includes inputting an alertness operation mode key when the user desires to heighten an alertness degree of the user, performing an air conditioning operation to maintain a first standard temperature and a range of a temperature variation corresponding thereto to enhance the user's alertness degree, performing an air conditioning operation to maintain a second standard temperature and the range of the temperature variation corresponding thereto when the user feels cold at the first standard temperature, and to maintain a third standard temperature and the range of the temperature variation corresponding thereto when the user feels hot at the first standard temperature, repeating the second step when the user feels cold at the third standard temperature, and when the user feels hot at the second standard temperature, and performing an air conditioning oper

Abstract: An improved alert air conditioning control method for an air conditioner for enhancing a learning efficiency which is capable of significantly enhancing a learning efficiency of a user by providing a better air conditioning environment, whereby it is possible to increase an alert level of a user and improve an indoor environment. The method includes the steps of measuring and analyzing an electroencephalogram (EEG) of a testee during an operation of an air conditioner based on first, second and third set temperatures and a temperature variation width with respect to the first, second and third temperatures, computing a data of a temperature variation width with respect to the set temperature at which an alert level is highest, selecting an air current of the air conditioner having the highest alert level between a weak wind and a chaos wind, and controlling the operation of the air conditioner by using a data of the temperature variation width and an air current data selected.