Troubleshooting A Malfunctioning Auto AC


When left under direct sunlight, an automobile gets extremely hot because heat is trapped in the interior. Tinting windows or using a light-coloured paint might reduce this effect, but an air conditioner is certainly the best solution to cooling your interior. The temperatures in a car can get extremely dangerous, making the auto AC not only a comfort component but a safety feature as well. A well-functioning automotive AC makes your ride comfortable, especially in the summer heat. However, these ACs can fail. If your AC blasts hot air from the vents, there is something amiss, and you should perform an elementary diagnosis. Just like your AC at home, the auto AC is composed of a compressor, condenser, evaporator and drier. When your car's AC is only blowing hot air, here are a few things you can do:

Check If the Refrigerant Is Leaking

The refrigerant is responsible for releasing excess heat, creating a cooling effect on the seat compartments. In most cars today, the AC system is airtight, so any case of insufficient refrigerant is likely not to be caused evaporation but by leaking refrigerant. 

Other possible reasons include loose connections and old hoses or simply evaporation overtime. The refrigerant changes been gaseous and liquid state to release heat — with a leakage, however, insufficient refrigerant cannot get rid of the heat created, causing the vents to blow out hot air. Automobile owners may find it difficult to detect a leakage, so the best option is to contact an experienced dealer for further diagnosis.

Check Your Condenser

The condenser looks like a radiator, is installed on the front of the AC system and serves to remove heat from the refrigerant as it comes from the compressor. Two possible problems with the condenser are either breakage or blockage. The innate placement of the condenser predisposes it to debris blockage. You can check for blockage by using the naked eye. Worst of all, the condenser can break after getting hit by a hard object. Both situations result in hot air and will require a trained AC technician to fix.

Check Your Compressor

The compressor is the heart of your AC unit that pushes the refrigerant throughout the system. If left inactive for long periods, the compressor could fail. To keep the compressor active and extend its lifespan, turn it on at full blast for about ten minutes every three weeks.

Check if the Cooling Fans Are Broken

Broken cooling fans mean that the condenser may be working inefficiently, causing hot air to go through without being cooled. Cooling fans are not very sturdy and can be faulty or even have cracks. If you experience hot air, perform a visual check to see if your fans are intact.

A malfunctioning AC can be extremely frustrating but can be fixed relatively inexpensively. This list is not comprehensive but holds the most common pointers to the troublemakers. Should you experience any, let an experienced technician diagnose your car's AC.


29 January 2020

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