What Causes the Car Air Conditioner Evaporator to Freeze?
1 Answers
Car air conditioner evaporator freezing causes and solutions are as follows: Compressor failure due to prolonged use: Reduced compression efficiency or damage to the compressor's gas distribution system leads to low pressure and freezing. The freezing occurs in the front part of the evaporator. Adding some refrigerant can resolve the issue. If the problem persists, the compressor must be replaced. Excessive refrigerant: Some air conditioners are refilled with refrigerant due to relocation or leaks. Improper handling by maintenance personnel may lead to overfilling, causing excess refrigerant to flow to the rear part of the evaporator, where it evaporates and freezes. This type of ice usually forms in the rear part of the evaporator and around the compressor's return pipe. Removing the excess refrigerant will resolve the issue. Dirty evaporator: After prolonged use, dust from the air or microorganisms generated by the evaporator can accumulate on the evaporator, obstructing airflow and reducing heat exchange, leading to excessively low temperatures and freezing. The freezing occurs in the rear part of the evaporator. After the ice melts, rinse the evaporator with water and gently brush along the fins with a soft brush, being careful not to wet the electrical components. Cleaning thoroughly will resolve the issue.
