Abstract: The present disclosure provides an air conditioner system that includes a plurality of air-conditioners, and a management server configured to receive air-conditioner data from the plurality of air-conditioners, and to analyze the received air-conditioner data to diagnose a state of the air-conditioners. The management server is configured to perform a first or short term diagnosis of the state of the air-conditioners. The management server to perform a second or long term diagnosis of the state of the air conditioners during a certain period, based on a result of the first diagnosis.

Abstract: The present disclosure provides an air conditioner system that includes a plurality of air-conditioners, and a management server configured to receive air-conditioner data from the plurality of air-conditioners, and to analyze the received air-conditioner data to diagnose a state of the air-conditioners. The management server is configured to perform a first or short term diagnosis of the state of the air-conditioners. The management server to perform a second or long term diagnosis of the state of the air conditioners during a certain period, based on a result of the first diagnosis.

Abstract: An air-conditioner system may include a plurality of air-conditioners, a management server and a database. The management server may be configured to receive air-conditioner data from the plurality of air-conditioners at a predetermined time interval and to analyze the received air-conditioner data to diagnose a state of the air-conditioners. The management server may store the received air-conditioner data in a memory. The management server may be configured to determine, based on a diagnostic result, whether the air-conditioner data corresponds to a normal, abnormal or failure state.

Abstract: The present disclosure discloses a remote maintenance server including a communication unit configured to transmit and receive data to and from a facility which is a control subject, a display unit configured to display a graphic object corresponding to the facility installed in a control site on a design drawing for the control site; and a controller configured to receive the status information of the facility corresponding to the graphic object through the communication unit and display it on the display unit.