What's the reason if the car air conditioner won't turn on?
3 Answers
The reasons why the car air conditioner cannot be turned on are as follows: 1. Airflow direction selection: Incorrect airflow direction selection in the car air conditioner may prevent it from turning on. 2. Blower motor failure: A faulty blower motor can result in reduced airflow from the vents, and in severe cases, may cause the air conditioner to fail to turn on. It must be inspected and repaired at a 4S shop. 3. Dirty air filter: A dirty air filter can obstruct the airflow from the air conditioner. Car owners can regularly clean the air filter by using a vacuum cleaner to remove dust from the filter or by using an air compressor gun. If the filter is excessively dirty, it is recommended to replace it. The replacement cycle for the air filter is 10,000 kilometers or six months.
I've been driving for twenty years, and the issue of the air conditioning not turning on is quite common. That time when I encountered it, I found that pressing the switch had no response, so I opened the hood to check the fuse box. After looking at the manual, I saw that the fuse corresponding to the air conditioning was blown, and replacing it with a new one fixed the problem. If that's not the case, it might be poor switch contact or a burnt-out relay. Some cars have a protection feature that prevents the air conditioning from starting if the refrigerant has leaked, to avoid damaging the compressor. Low battery voltage can also cause startup failure—just use a multimeter to check the voltage. When it's unbearably hot in the summer, not having air conditioning is really tough. Check these areas first, and if that doesn't work, take it to a repair shop quickly to avoid problems on the road.
As a car enthusiast who loves tinkering, I was really startled when the air conditioning failed to start last time. I figured the first thing to check would be the fuse, since a blown fuse is the easiest to fix. I rummaged through the tools in the glove compartment and had it sorted in minutes. If the fuse was fine, it might be the relay controlling the AC that got stuck, or the switch button aging with poor contact. With the hot weather now, an aging battery can also affect power output—I tested the voltage and sure enough, it was low. There could also be a settings issue; try turning the temperature knob all the way down to the lowest setting. Don’t slack on regular maintenance—cleaning the filters and the system can prevent a lot of issues, saving both money and hassle.
