| 摘要 |
PROBLEM TO BE SOLVED: To provide a signal transmission device capable of easily carrying out address settings of indoor units while saving labor of providing a communication line apart from a refrigerant pipe by using the refrigerant pipe as the communication line, and to provide an air conditioner and an air conditioning network system provided therewith. SOLUTION: An outdoor unit 10 composing the air conditioner 50 sends a test frame to each indoor unit, and it identifies a system on the basis of data that had a response. When it is judged that indoor units 11-13 are connected to a refrigerant pipe 15 of the same system, addresses are set in the indoor units 11-13. The system identification is carried out on the basis of a frequency characteristic of a signal transmitted through the refrigerant pipe. The outdoor unit 10 sets the addresses in a descending order of received signal levels (in an order of the indoor unit 11, the indoor unit 12, and the indoor unit 13). COPYRIGHT: (C)2006,JPO&NCIPI |
