How to detect whether your car needs to be filled with […]
How to detect whether your car needs to be filled with air conditioning refrigerant
1. Turn on the vehicle air conditioner, the A/C light is on, cooling, and the internal circulation is the maximum wind. The thermometer measures the air outlet temperature and shows that the temperature gradually decreases. Test the working temperature of the Car Refrigerant charging pipe vehicle air conditioner after 1, 2, and 3 minutes, and record them.
2. Open the hood and touch the low-pressure pipe of the air-conditioning compressor.
3. After measuring for 3 minutes, step on the accelerator for 2-3 minutes to keep the car at 1500 rpm, connect the pressure gauge to the low pressure nozzle (L), and use the pressure gauge to determine whether the car air conditioning compressor and expansion valve are operating normally. Whether the refrigerant is sufficient, the values are normal within the green range of the pressure gauge, and the electronic fan near the front end of the vehicle air inlet is working normally.
4. There is no large area blockage on the surface of the radiator.
After passing the above vehicle air conditioning status check, you can basically determine that the air conditioning machinery is working normally, and the temperature is not within 3-8° to determine that it needs maintenance. At this time, you need to fill your car with a bottle of air conditioning refrigerant.