看看排水口是否堵住了？

DRAIN IS BLOCKED – DIRT OR DUST HAS BLOCKED THE DRAIN HOLES:
There are drain holes (drip pan) at the rear of window AC units. They can get blocked from dusty conditions or dirt in the air. When this type of blockage happens, the water that would normally drip out will be trapped and water will leak from the front of the AC unit and at both sides of the unit. Be sure to keep the drain holes clean and free of debris. Also clean the filters or replace them to prevent any type of blockage that may cause a water leak.

https://www.youtube.com/results?search_query=window+ac+unit+leaking+water+inside+

这些视频都是处理不同原因而产生的漏水问题。 在家自己好好看。