| 摘要 |
<P>PROBLEM TO BE SOLVED: To positively stop a compressor when there is high pressure malfunction, and to display malfunction contents by clarifying causes in malfunction operation. <P>SOLUTION: The heat pump controller is provided with a control part 16 provided with an arithmetic control means for controlling the entire system, a refrigerant compressing means 18, a compressor driving means 19 for driving the refrigerant compressing means 18, a pressure switch 21 for carrying out on/off in accordance with a state of a pressure of a refrigerant, a fan motor 29, a fan motor driving circuit 30, and a pressure switch signal circuit 22 inputting a signal of the pressure switch 21 into the control part 16 and connected so as to stop operation of the fan motor driving circuit 30 by a circuit not going through the arithmetic control means. By stopping the refrigerant compressing means 18 by operation of the fan motor driving circuit 30 by operation of the pressure switch 21, and determining high pressure malfunction by the control part 16, the cause of malfunction is clarified, repair time can be shortened, and the number of times of part replacement can be reduced. <P>COPYRIGHT: (C)2008,JPO&INPIT |
