What are the possible reasons for low high pressure in car air conditioning?

1 Answers
HavenLee
07/30/25 10:21am
Possible reasons for low high pressure in car air conditioning are as follows: 1. System aspects: Refrigerant leakage, refrigerant blockage, dirty heat exchanger, etc. can cause low high pressure in car air conditioning. 2. Electrical aspects: When the compressor, solenoid valve, four-way valve, or motor operates abnormally, it can also lead to low high pressure in car air conditioning. 3. Heat dissipation: When the air conditioning is operating normally, the low pressure is about 3bar, and the high pressure is about 15bar. Note that this is when the air conditioning is operating normally, with the cabin blower set to the fourth gear, and the radiator cooling fan running at high speed, indicating good heat dissipation from the external condenser.
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