Patent ID: 7260451

Claim:
A discrete converter unit connectable to a monitor apparatus and an air conditioner for monitoring and controlling the air conditioner, the air conditioner including an indoor machine and an outdoor machine to effect a refrigerating cycle, the indoor machine and the outdoor machine being connected with each other via a transmission path, comprising: air conditioner transmission software for transmitting a setting-control data determined by the monitor apparatus regarding a running start/stop state, a running mode, an air quality and a temperature, respectively of the air conditioner, to the transmission path, and for receiving running data regarding a temperature and a pressure from the transmission path; USB transmission software for receiving the setting-control data via an USB from the monitor apparatus, and for transmitting the running data via USB-formatting to the monitor apparatus via the USB; and a converter to convert non-USB-formatting of the running data received via the air conditioner transmission software to USB-formatting for the USB transmission software, and to convert USB-formatting of the setting-control data received via the USB transmission software to non-USB-formatting for the air conditioner transmission software, respectively, and wherein the setting-control data having the non-USB-formatting is transmitted to the transmission path if a setting value of the setting-control data having USB-formatting is changed.