| 摘要 |
<p>An air conditioner (1) provided with: a compressor (21) for operating the refrigeration cycle; an outdoor heat exchanger (23) disposed outdoors; an indoor heat exchanger (13) disposed indoors; an outdoor fan (25) for supplying outdoor air to the outdoor heat exchanger (23); and an indoor fan (15) for supplying indoor air to the indoor heat exchanger (13), the air conditioner (1) being configured so that heating operation is performed by driving both the indoor fan (15) and the outdoor fan (25) and by causing the refrigerant to flow in one direction through both the indoor heat exchanger (13) and the outdoor heat exchanger (23) and so that, when the outdoor heat exchanger (23) is frosted, defrost operation in which both the indoor fan (15) and the outdoor fan (25) are stopped is performed by causing the refrigerant to flow in the opposite direction to the direction of the flow of the refrigerant in the heating operation. When a defrost failure is caused by the defrost operation, preparatory defrost operation in which the refrigerant is caused to flow in the same direction as that in the heating operation, the outdoor fan (25) is driven, and the indoor fan (15) is stopped is performed for a predetermined period of time, and after that, the defrost operation is resumed.</p> |
