Air conditioning compressor malfunction: Possible causes

Do you want cold summer air and transparent windows in winter? Then you want a functioning air conditioning compressor. This is the air conditioning system feeding the high-pressure refrigerant before the pump in the condenser, which changes the gas into a liquid.

Not all air conditioning problems are caused by the fact that the system has little refrigerant gas. Some are caused by system components, such as the compressor. The air conditioner compressor, usually operated by a serpentine service belt, sometimes makes noise or crunches before breaking, but may also stop working without any warning light.

In addition, a compressor can spill the coolant, which means less fresh air or fresh air is completely absent. A mechanic is the best person to diagnose if a compressor does not work, since conditioning problems can also be caused by refrigerant leaks elsewhere in the system, by a slippery service belt or by the corrosion in the air conditioning evaporator. If there is a leak, the addition of refrigerant does not solve the problem.

Air conditioning compressors often last as much as a vehicle’s life but can break because bearings wear out, seals ruin, causing leakage, and long-term corrosion causes damage. If a compressor does not need to be replaced, it should still be checked approximately every 75,000 km.

Frequent compressor malfunction is probably due to a misalignment of the service belt, a defective pulley, or another problem that creates excessive stress. However, if the compressor shows any of the symptoms described above, it may be necessary to replace it. Air conditioning systems are sealed circuits, and the loss of cooling capacity requires a complete control of the entire system.