What Are the Reasons for the Car Air Conditioner Fan Not Turning On When Activated?
1 Answers
There are several reasons why the car air conditioner fan does not turn on when activated, including poor contact of the main control switch, damage to the fan motor coil, and detachment of the fan bearing. Poor contact of the main control switch: If the air conditioner switch has poor contact, it cannot control the normal activation of the car air conditioner, and the lack of connection between the two leads to the fan not turning on. Solution: Replace the air conditioner control switch and check for any short circuits in the connecting wires. Damage to the fan motor coil: If the fan motor coil is damaged, the fan cannot receive power normally, resulting in it not turning on. Solution: Use a multimeter to measure the contact resistance of the main control switch. If the resistance is too high or zero, repair or replace the component. Detachment of the fan bearing: When the fan bearing is detached, activating the air conditioner causes the bearing to spin idly without the fan turning normally. Solution: Reinstall and secure the fan bearing. How the car air conditioner works: The car air conditioning refrigeration system consists of a compressor, condenser, liquid storage dryer, expansion valve, evaporator, and blower, among other components. These parts are connected by copper pipes and high-pressure rubber hoses to form a sealed system. When the refrigeration system operates, the refrigerant circulates in different states within this sealed system.