| 摘要 |
PURPOSE:To control the operation of an outdoor unit by a signal from an indoor unit by connecting the outdoor unit to the indoor unit by the electric wire of low voltage. CONSTITUTION:When the operating switch 13 of an indoor unit 2 is turned ON, a drive signal VD and a temperature difference signal VT is inputted to the control circuit 12 of the outdoor unit 1. A power source 11 to the circuit 12 is maintained in a current supply state, and an operating circuit 21 turns ON a relay 29, and closes a contact 30 and turns a switch 30 ON, thus a current being supplied to a compressor control circuit 34. While the compressor 3 is rotating, in order to drive an outdoor fan 5 the circuit 21 interlocks with a rotational speed setting signal VN to the compressor 3 to turn On or OFF a relay 32 and open or close a contact 33 to control the outdoor fan 5. The rotational speed of the compressor 3 is controlled in correspondence to the temperature difference signal VT. |
