What are the reasons for the car air conditioning fan not spinning?
3 Answers
Reasons for the car air conditioning fan not spinning: 1. Poor contact of the air conditioning switch: If the air conditioning switch has poor contact, it cannot control the normal startup of the car air conditioning, and the connection between them fails, resulting in the car air conditioning fan not spinning; 2. Fan bearing detachment; 3. Damage to the fan motor coil: If the fan motor coil is damaged, the fan cannot function normally, leading to its failure to spin. In this case, the fan motor coil needs to be inspected and repaired. The car air conditioning system is a device that cools, heats, ventilates, and purifies the air inside the compartment, providing a comfortable environment for passengers, reducing driver fatigue, and improving driving safety.
I've been driving for over 30 years and have encountered the issue of car AC fan failure several times. The most common cause is a blown fuse, which is located in the fuse box under the dashboard - it's clearly marked with an AC symbol and easy to find. Replacing a fuse only costs a few dollars. If the fuse isn't the problem, then the fan motor might be burnt out, requiring a new one that costs around a hundred bucks. Another possibility is aged wiring or poor contact, especially prone to short circuits during rainy days. I suggest starting your car and trying to adjust the temperature knob - sometimes settings issues can prevent the fan from activating. A non-working fan isn't a minor issue; it can lead to overheating and heatstroke during summer driving while also compromising visibility and safety. So don't tinker with it for too long yourself - get to a repair shop quickly to check the relay and the entire AC system.
I enjoy working on my car in my spare time. When the AC fan stops working, I always check the fuses first. I open the vehicle's fuse box (usually located under the steering wheel) and use a multimeter to test if the relevant fuse has blown. If it's fine, I then check if the fan connector is loose—sometimes vibrations can cause the wires to come off. The motor itself might also be burnt out, requiring the fan assembly to be removed for testing. I've also encountered control module failures, which require using a diagnostic tool to read the fault codes. The tools needed are simple: a multimeter and a screwdriver are enough for DIY. A non-functioning fan prevents cold air from circulating, making the car stuffy and unbearably hot, especially during long trips. It's recommended to regularly clean the AC filter to prevent dust buildup, which can overload the fan.
