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How to Solve the Air Conditioning Freezing Issue in Buick Excelle?

1 Answers

LaMaverick

07/25/25 3:15pm

Here are the solutions for the air conditioning freezing issue in Buick Excelle: 1. Insufficient refrigerant. After prolonged use, the air conditioning system may experience refrigerant leakage or loss. When the refrigerant in the cooling system decreases, the evaporation pressure becomes too low, leading to evaporator freezing. If the air conditioner freezes due to insufficient refrigerant, it is necessary to add refrigerant. 2. Dirty air conditioning evaporator and filter. After a period of use, dust from the air or microorganisms generated by the evaporator can accumulate on the evaporator, causing incomplete evaporation and preventing cold air from being blown out, which results in the evaporator freezing due to excessively low temperature. The air conditioning evaporator and filter need to be thoroughly cleaned. 3. Faulty temperature controller. In a mechanical temperature controller, the gas pressure in the temperature-sensing chamber changes with temperature, driving the contact action of the controller. Due to reasons such as contact sticking or insufficient spring force, the contacts may remain closed, causing the air conditioner to run continuously and leading to freezing. If the air conditioner freezes due to a faulty temperature controller, the air conditioning temperature controller needs to be replaced. If it is a compressor failure, it is best to replace the air conditioning compressor. 4. Low blower speed can also cause the air conditioner to freeze. A low blower speed prevents cold air from being blown out, and long-term accumulation can lead to air conditioning freezing.

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