Remote monitoring system and remote monitoring method

A remote monitoring system to monitor an operating state of an air-conditioner, the remote monitoring system comprising:

• a storage device mounted on the air-conditioner or a remote monitoring apparatus to monitor the air-conditioner, the operating state being stored in the storage device;
• and
• a server configured to communicate with the storage device over a network and to obtain the operating state from the storage device, wherein
• the server is configured to collect information for creating a refrigerant circuit diagram from the storage device, to generate an image or moving images of the refrigerant circuit diagram based on the collected information, and to store the image or the moving images at a location accessible by a user, when the server receives a command to request the refrigerant circuit diagram of the air-conditioner from the user.

A remote monitoring method of monitoring an operating state of an air-conditioner, the remote monitoring method comprising:

• recording the operating state for a first period of the air-conditioner in a storage device mounted on the air-conditioner or a remote monitoring apparatus to monitor the air-conditioner;
• and
• transmitting to a server over a network, by a communication control unit mounted on the air-conditioner or the remote monitoring apparatus, the operating state stored in the storage device, wherein
• the transmitting the operating state to a server includes
• a) when there is no missing portion in the operating state obtained by the server from the storage device until now, transmitting the operating state newly recorded in the storage device after previous transmission of the operating state to the server, and
• b) when there is a missing portion in the operating state obtained by the server from the storage device until now, transmitting the operating state newly recorded after previous obtainment of the operating state and the missing portion that remains in the storage device to the server.