A server connected to a mobile terminal and a plurality of air conditioners via a communication line, the server comprising: a storage configured to store installation position data including space information indicating a space in which the plurality of air conditioners are installed and layout information indicating installation positions of the plurality of air conditioners in the space; a receiver configured to receive a request for transmitting the installation position data from the mobile terminal and a signal, from the mobile terminal, for confirming an installation position of a first air conditioner of the plurality of air conditioners in the installation position data; a transmitter configured to read the installation position data from the storage and to transmit the installation position data to the mobile terminal when receiving the request for transmitting the installation position data; and a control calculation unit configured to drivean actuator of the first air conditioner when receiving the signal for confirming the installation position from the mobile terminal, wherein the control calculation unit is configured to receive, from the mobile terminal, identification information of the air conditioner that the actuator is driving; wherein the identification information input to the mobile terminal by the operator, wherein, in response to the identification information indicating an incorrect setting, indicating that the installation position data is incorrect, the control calculation unit of the server is configured to store the identification information received from a control calculation unit of the mobile terminal in the storage. a storage configured to store installation position data including space information indicating a space in which the plurality of air conditioners are installed and layout information indicating installation positions of the plurality of air conditioners in the space; a receiver configured to receive a request for transmitting the installation position data from the mobile terminal and a signal, from the mobile terminal, for confirming an installation position of a first air conditioner of the plurality of air conditioners in the installation position data; a transmitter configured to read the installation position data from the storage and to transmit the installation position data to the mobile terminal when receiving the request for transmitting the installation position data; and a control calculation unit configured to drivean actuator of the first air conditioner when receiving the signal for confirming the installation position from the mobile terminal, wherein the control calculation unit is configured to receive, from the mobile terminal, identification information of the air conditioner that the actuator is driving; wherein the identification information input to the mobile terminal by the operator, wherein, in response to the identification information indicating an incorrect setting, indicating that the installation position data is incorrect, the control calculation unit of the server is configured to store the identification information received from a control calculation unit of the mobile terminal in the storage.