What Causes the Low-Pressure Pipe of a Car's Air Conditioner to Not Be Cold?

1 Answers
OAna
07/30/25 9:51am
Here are the reasons why the low-pressure pipe of a car's air conditioner is not cold: 1. Insufficient refrigerant in the air conditioner. 2. Inadequate air conditioner pressure. 3. Refrigerant pipeline leakage. 4. Compressor malfunction. Check the air conditioner pipes for any signs of leakage. If there is a leak, it needs to be repaired, and the system must be vacuumed before adding refrigerant. Below are the inspection steps for an air conditioner not cooling: 1. Check if there is refrigerant in the system. If not, pressurize the system to locate the leak, then refill it. 2. If there is refrigerant, check whether the compressor is working. If it isn't, inspect the air conditioner pressure switch, temperature control switch, and their wiring for issues. 3. Check the air conditioner's heat dissipation and see if the fan is working. Clean the condenser. 4. Replace the air filter.
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