What Causes Reduced Airflow in BMW Air Conditioning?
1 Answers
Reduced airflow in BMW air conditioning is primarily due to excessive dust and impurities adhering to the condenser, which impairs its cooling efficiency. Other possible causes include: 1. A heavily contaminated air filter obstructing the blower's air intake, resulting in diminished airflow. 2. Excessive impurities on the evaporator significantly affecting both air intake volume and cooling performance, thereby severely compromising the AC's refrigeration capability. 3. Frost formation on the evaporator surface, creating substantial obstruction to air ventilation. Specific solutions are as follows: If external circulation airflow is notably weaker than internal circulation, this typically indicates a clogged air filter. The resolution involves replacing the cabin air filter. When both circulation modes exhibit weak airflow, potential issues may include internal duct blockages. It's recommended to first inspect and replace the cabin air filter if excessively dirty, as it may be obstructing air intake into the vehicle. Automotive AC working principle: The vehicle air conditioning refrigeration system comprises a compressor, condenser, receiver-drier, expansion valve, evaporator, and blower. These components are interconnected via copper (or aluminum) pipes and high-pressure hoses to form a sealed system.
