Abstract: In order to derive, from operation data obtained from an air conditioner, the correct cause of malfunction of the air conditioner and the suitable repair information, a diagnostic system is connected to an outdoor unit and the indoor units of the air conditioner, which is provided with communication units. A mobile communication terminal requests that the communication units of the air conditioner transmit the operation data and the model data to the mobile communication terminal, which then communicates with a maintenance server system storing a diagnostic program corresponding to each model of air conditioner. Then, either the maintenance server system or the mobile communication terminal uses the diagnostic program corresponding to the model data to make a diagnosis of the air conditioner on the basis of the received model data and operation data. The diagnostic result is displayed on a display unit of the mobile communication terminal.

Abstract: In order to derive, from operation data obtained from an air conditioner, the correct cause of malfunction of the air conditioner and the suitable repair information, a diagnostic system is connected to an outdoor unit and the indoor units of the air conditioner, which is provided with communication units. A mobile communication terminal requests that the communication units of the air conditioner transmit the operation data and the model data to the mobile communication terminal, which then communicates with a maintenance server system storing a diagnostic program corresponding to each model of air conditioner. Then, either the maintenance server system or the mobile communication terminal uses the diagnostic program corresponding to the model data to make a diagnosis of the air conditioner on the basis of the received model data and operation data. The diagnostic result is displayed on a display unit of the mobile communication terminal.

Abstract: A utility diagnosing equipment can recognize an abnormality or a normality in a plurality of utilities of an identical type, which would not be recognized when an absolute threshold is set. The equipment accepts state values from the plurality of utilities, sets an average value of the state values of each utility to a proxy value, finds a relative value between the state value of each utility and the proxy value thereof, and displays the relative value for each utility. The relative values of the utilities exceeding a predetermined threshold is highlighted.

Abstract: A utility diagnosing equipment can recognize an abnormality or a normality in a plurality of utilities of an identical type, which would not be recognized when an absolute threshold is set. The equipment accepts state values from the plurality of utilities, sets an average value of the state values of each utility to a proxy value, finds a relative value between the state value of each utility and the proxy value thereof, and displays the relative value for each utility. The relative values of the utilities exceeding a predetermined threshold is highlighted.

Abstract: A service system for air conditioner is provided which offers a total solution to a wide range of fields, from the customer relationship management covering individual users, building owners and administrators and building management companies to the maintenance and management, manufacture, design, and development on the part of the manufacturer. The service system includes a monitoring center which has the customer database, an operation information database for storing operation information of air conditioners for each customer, and a device information database having device information on the air conditioners related with each customer of the customer database. The monitoring center, upon deciding that there is anomaly in the operation information, dens to the cellular phone over the Internet the information representing the content of the anomaly and the customer information and device information associated with the operation information which was judged abnormal.

Abstract: A service system for air conditioners is provided which offers a total solution to a wide range of fields, from the customer relationship management covering individual users, building owners and administrators and building management companies to the maintenance and management, manufacture, design, and development on the part of the manufacturer. The service system includes a monitoring center which has a the customer database, an operation information database for storing operation information of air conditioners for each customer, and a device information database having device information on the air conditioners related with each customer of the customer database. The monitoring center, upon deciding that there is anomaly in the operation information, sends to the cellular phone over the Internet the information representing the content of the anomaly and the customer information and device information associated with the operation information which was judged abnormal.

Abstract: A service system which includes the monitoring center which has a customer database, an operation information database for storing operation information of the air conditioners for each customer, and a device information database 203 having device information on the air conditioners related with each customer of the customer database. When the system decides that there is anomaly in the operation information, the monitoring center sends to the cellular phone over the Internet information representing the content of the anomaly and customer and device information associated with the operation information which was judged abnormal.

Abstract: A service system for air conditioners is provided which offers a total solution to a wide range of fields, from the customer relationship management covering individual users, building owners and administrators and building management companies to the maintenance and management, manufacture, design, and development on the part of the manufacturer. The service system includes the monitoring center 1 which has the customer database 207, the operation information database 206 for storing operation information of the air conditioners 101 for each customer, and the device information database 203 having device information on the air conditioners 101 related with each customer of the customer database 207.

Abstract: A service system for air conditioners is provided which offers a total solution to a wide range of fields, from the customer relationship management covering individual users, building owners and administrators and building management companies to the maintenance and management, manufacture, design, and development on the part of the manufacturer. The service system includes the monitoring center 1 which has the customer database 207, the operation information database 206 for storing operation information of the air conditioners 101 for each customer, and the device information database 203 having device information on the air conditioners 101 related with each customer of the customer database 207.