| 摘要 |
PURPOSE: To improve safe property by a method wherein a temperature fuse is arranged on a terminal board and is connected to a power relay in series to stop the supply of power to the outdoor unit side by fusing the temperature fuse when the terminal board is heated abnormally. CONSTITUTION: A temperature fuse 21 is arranged on the terminal board 20A of an outdoor unit side and one end thereof is connected to a power supply terminal, connected to the power supply 112 of a control circuit through a wife, while the other terminal thereof is connected to a power relay 19 connected to a driving circuit 122. In this constitution, when the terminal board 20A is heated abnormally, the temperature fuse 21 is fused whereby the power relay 19 is cut and the contact 19A of the same is opened to interrupt the supply of a commercial power supply to the outdoor unit. As a result, the instruments of the outdoor unit are stopped. According to this method, safety is improved. |
