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Why is the high-pressure gauge needle of the car air conditioner swinging significantly?

1 Answers

SanCarlos

09/06/25 5:00am

The reasons for significant swinging of the high-pressure gauge needle in a car air conditioner are as follows: 1. Excessive pressure within the system, causing the safety valve to release water. 2. The safety valve is not fully closed. 3. Leakage caused by excessively dirty water, blockages, or damage. Additional information: 1. Maintenance: Judging whether the air conditioning system is functioning properly is quite simple. If issues such as poor cooling, low airflow, or no cooling at all are noticed, it is necessary to check whether all components are operating normally and whether there is a lack of refrigerant. The refrigerant must be added according to the type specified in the vehicle manual. These tasks can be handled at professional service centers. 2. Large temperature difference: During summer, the temperature difference between the inside and outside of the car is significant. When entering the car, it is not advisable to immediately set the air conditioner to a very low temperature. First, use high airflow with natural wind to disperse the hot air inside the car. Then, do not close all the windows completely. Turn on the air conditioner, and after the body gradually adapts, adjust the air conditioner to the desired temperature and close the windows.

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