| 摘要 |
<p>PROBLEM TO BE SOLVED: To efficiently perform a preheating operation when a heating operation stops.SOLUTION: An air conditioner includes: a timer counting time since end of a heating operation; and determination means determining whether the heating operation is performed until time-out of this timer. The air conditioner has an interval preheating function to count second predetermined time t2 longer than first predetermined time t1 after performing a preheating operation for constant time X when a stop state of the heating operation continues until the time-out of the timer, to perform an interval preheating operation for gradually increasing interval time of the preheating operation even after performing the preheating operation for the constant time X when the stop state of the heating operation continues until time-out of this second predetermined time t2, and to end the interval preheating operation when the stop state of the heating operation continues for predetermined time tn.</p> |
