| 摘要 |
PROBLEM TO BE SOLVED: To perform resetting, when extended control means runs away, without suspending an operation. SOLUTION: Reset ports of a plurality of extended microcomputers 22a, 22b, 22c are connected in parallel to reset signal output ports of a main microcomputer 21. Respective indoor units 14a,... are connected to the extended microcomputers through signal lines. The respective indoor units 14a,... and the extended microcomputers, respectively, are connected to each other through one-to-one serial line circuits. The extended microcomputers transmit data to the main microcomputer 21 every predetermined interval. When input of data from the extended microcomputers is interrupted for a predetermined period of time, the main microcomputer 21 outputs a reset signal to reset the extended microcomputers. |
