| 摘要 |
PROBLEM TO BE SOLVED: To provide a control circuit for an air conditioner operable without being influenced by intrusion of noise from a valve mechanism provided on a cooling medium circuit, with enhanced reliability of a system. SOLUTION: The control circuit for the air conditioner is provided with a control circuit part for controlling the whole air conditioner; a valve driving circuit for controlling the valve mechanism of a refrigerating cycle; and an insulation circuit provided between the control circuit part and the valve driving circuit and transmitting signals in an electrically insulated state, in the air conditioner provided with the refrigerating cycle having the valve mechanism for controlling a circulation flow rate and a circulation direction of the cooling medium. The control circuit part and the valve driving circuit are driven by a power source electrically insulated respectively. COPYRIGHT: (C)2004,JPO
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