Normal air conditioner compressors usually take around 4 to 5 minutes to turn on and when it is switched on, it makes a clicking sound so that it becomes evident that the compressor is working. However, at certain times, the compressor can hold some issues and due to which it can take a prolonged time to turn on.
There can be numerous reasons why a compressor can stop working. Also, when in need of a repair, a compressor shows some evident signs such as taking more time to turn on, not circulating proper air, water leak from the system, and many more. Hence, it is always recommended to schedule routine maintenance of an air conditioning unit to avoid all such problems.