AIR CONDITIONER AND DEFROSTING CONTROL METHOD THEREOF

The present invention relates to the technical field of air conditioners, and aims to solve the problems that a defrosting starting control method of existing air conditioners is unreasonable, and frequently, defrosting is not performed while there is frost or defrosting is performed while there is no frost. The present invention provides an air conditioner and a defrosting control method thereof. A distance measuring device is provided at an air outlet of an indoor heat exchanger and used for measuring a distance between the distance measuring device and the surface of the indoor heat exchanger. The control method comprises: obtaining the distance between the distance measuring device and the surface of the indoor heat exchanger during refrigeration; selectively controlling the air conditioner to enter a defrosting mode according to the distance, and if the distance is smaller than a first preset distance, entering a first defrosting mode; if the distance is greater than or equal to the first preset distance