Why is the car air conditioner not responding?
2 Answers
Car air conditioner not responding is due to compressor clutch failure or blower motor failure. Below are the relevant explanations: 1. Compressor clutch: The car air conditioner consists of many components. When cooling, the AC button needs to be pressed, which engages the compressor clutch. At this time, the engine drives the compressor to operate, allowing the compressor to continuously compress the refrigerant and deliver it to the evaporator. 2. Blower motor: The refrigerant expands and absorbs heat in the evaporator, cooling it. The cooled evaporator then cools the air blown by the blower motor, allowing the air conditioner vents to blow cold air. When heating, the high-temperature coolant from the engine enters the heater core, and the air from the blower motor passes through the heater core, enabling the air conditioner vents to blow warm air.
Last time my car's air conditioning suddenly stopped working, and the fan wouldn't move either, which really worried me. My first reaction was to check the fuse box—I looked for the relevant fuse in the engine compartment to see if it had blown; if it was burnt out, replacing it might solve the problem. If the fuse was fine, the issue could be a stuck fan motor or a short circuit in the wiring, cutting off the current. The compressor is the core component—a loose belt or compressor failure can prevent the AC from starting. Refrigerant leaks are also a common cause; without it, there's no cold air. I've dealt with similar situations myself—first, I used a multimeter to test the voltage. If it was normal, the problem likely lay in the refrigeration system. Don’t force the compressor to work, as it can damage the car. It’s safer to go to a 4S shop for refrigerant refills or repairs. Regularly cleaning the filter and checking the pipes can prevent small issues from becoming big ones, saving a lot on repair costs.
