What are the reasons for smoke and a burning smell from a car's air conditioning compressor?

[DelNolan]

There are two main reasons for smoke and a burning smell from a car's air conditioning compressor: 1. Blocked air intake: This prevents hot air from being discharged, leading to heat buildup that can melt plastic components. The solution is to first check if the air intake is clear, then manually test whether the air vents are functioning normally, and listen for any unusual noises inside the air conditioning unit. 2. Aging car wiring: The electrical heating circuit may get burned by the heat, or internal plastic components may shift and overheat. If this is the cause, the car's air conditioning system needs to be disassembled for inspection and repair.