How to Release Excess Refrigerant in Car Air Conditioning?
2 Answers
Connect the hoses of the car refrigerant recovery and charging machine to the high and low pressure pipes of the car air conditioning system (red hose to high pressure pipe, blue hose to low pressure pipe). After ensuring the hoses are properly connected and the refrigerant recovery and charging machine completes its self-check, set the required amount of refrigerant to be recovered and initiate the recovery process.
I enjoy working on my car in my spare time. Once, while adding refrigerant to the AC system, I accidentally overfilled it due to a slip of the hand. As a result, the AC started blowing warm air instead of cold, and the engine noise increased significantly. This scared me into stopping the car immediately for inspection. After researching, I learned that overcharging the system can cause the high pressure to skyrocket, forcing the compressor to work under excessive load, potentially leading to damage. Since refrigerant is a high-pressure gas, releasing it carelessly can cause frostbite and is also against environmental protection laws. Later, I took the car to a repair shop where the technician used a recovery machine to remove the excess refrigerant, restoring normal operation. It's crucial to use a pressure gauge to check the pressure before adding refrigerant. Beginners should avoid handling this task—it's safer to let professionals handle it during regular maintenance. Don't risk damaging your car or endangering yourself to save a small cost.
