What to Do When the Car's Air Conditioning Fan Doesn't Turn On?
2 Answers
Solutions for a car's air conditioning fan not turning on: 1. Use a multimeter to measure the contact resistance of the main control switch. If the resistance is too high or zero, repair or replace it; 2. Tighten the set screw; 3. Check the capacitor and replace it with one of the same specifications. Reasons for the car's air conditioning fan not turning on: 1. Poor contact of the main control switch; 2. Damage to the fan motor coil; 3. Loose set screw between the fan motor and the fan blade; 4. Open or short circuit in the fan capacitor. The car air conditioning refrigeration system consists of a compressor, condenser, liquid storage dryer, expansion valve, evaporator, blower, etc., connected by copper pipes and high-pressure rubber hoses to form a sealed system.
When the car's air conditioning is on but the fan isn't working, I can understand how hot it feels. You should first check a few spots to see if it's a minor issue. The fan fuse is in the engine compartment's fuse box—it might have blown, cutting off power, so try replacing it with a new one. Next, pop the hood and listen for any sound from the fan motor; if it's silent, the motor could be seized or worn out, needing lubrication or replacement. Also, check if the fan relay has poor contact—a gentle tap might temporarily fix it. If all these seem fine, the issue could lie with the AC control panel or wiring, but avoid DIY repairs here, especially with sensitive electronics. Excessive heat inside the car affects health and safety, so address it promptly or consult a professional. Regular maintenance of the fan system is crucial—keep the blades clean to prevent dust buildup and jamming.
