What is the reason for the smell of the car air conditioner?

You only need to turn off the AC switch when you are about to reach your destination when you are driving, and dry the surface of the evaporation tank without turning off the hair dryer.

After the air conditioning system is activated, the concentration of bacteria and odor in the room increases, which is due to the slow evaporation of condensate on the heat exchange coil, ribs and their surrounding parts to form a high humidity (and high temperature) condition around the coil, and become an environment suitable for microbial reproduction, and a large amount of gas generated during reproduction is suddenly released due to the system drive, becoming the source of foul odor.

Cleaning tools: air conditioner cleaning machine, tool box, steam spray cleaning machine, watering can, scraper, fin comb, lighting, shovel, rag, sewage bag, safety belt, work sign Cleaning agent: air conditioner special cleaner, all-purpose foam cleaner, shell cleaner, WD-40, purified water.

Cleaning steps: Step 1: Check whether the air conditioner is running normally before cleaning, and then turn off the power.

Step 2: Clean up the floating dust on the surface of the air conditioner and erect a work sign. Step 3:

Remove the shell and panel of the air conditioner according to the instructions, and remove the filter. Step 4: Wet the area to be cleaned with a 5L watering can so that the foaming effect is better when cleaning.

Step 5: Spray the air conditioner cleaner on the cleaned fin with a watering can and let it react for 5 to 8 minutes so that it can thoroughly penetrate, decompose and remove stains in the gaps and surface of the fins. Step 6:

Use a scraper to scrape the foam on the surface of the fins, and the uncleaned stubborn and deformed fins can be cleaned with a fin comb. Step 7: Use a steam spray cleaning machine to sterilize, disinfect and decompose oil stains on the cleaned fins.

Step 8: Use an air conditioner cleaning machine to clean the cleaned radiator with clean water. Step 9:

Wash the filter and replace the panel. Step 10: Install the chassis and panel, install the air conditioner back to the original installation position, and turn on the machine for 20 minutes to check and accept.

The reasons for the peculiar smell of automobile air conditioners are: 1. The air conditioning filter has not been cleaned for a long time: the air conditioning filter has not been cleaned for a long time, and the air is humid in the rainy season, which causes the air conditioning filter to be humid and warm, resulting in mold breeding and musty smell; 2. The pipes of the air conditioning system have not been cleaned for a long time

The outside air flows through the ducts of the air conditioning system, which will combine a small amount of residual moisture with the dust in the air, and if it is not cleaned for a long time, it will also produce mildew and produce a sour and rotten odor. The following is the solution to the odor of the car air conditioner: 1. Clean frequently:

Clean the air-conditioning system or replace the air cleaner frequently to reduce the growth of mould; 2. Master the correct method of turning on and off the air conditioner: generally it is best to turn off the air conditioner 5 minutes before parking, and then turn on the natural wind, so that the temperature in the car can be picked up as soon as possible, and the water droplets condensed will not be condensed in the air conditioning pipe due to the temperature difference after parking, so that the air conditioning pipe can be dried and the breeding of mold and fungus can be blocked; 3. Use natural air fresheners: you can put some pineapple, lemon, apple and other fruits in the car to achieve the effect of removing odors; 4. Always use the auto key of the air conditioner panel:

The temperature in the car is relatively stable, the human body will feel comfortable, and the air quality in the car can be maintained.

The reason for the peculiar smell of the car air conditioner may be that the air conditioner filter has not been replaced for a long time, the evaporation box has not been cleaned, and there are foreign objects in the ventilation duct. Failure to replace the air filter for the air conditioner: If the filter element is not cleaned and replaced for a long time, a lot of dust and debris will be deposited, resulting in odors.

Foreign objects in the ventilation duct: If the car has not been used for a while, there is a possibility that some small insects and other animals may be drilled into the ventilation duct. If you have the habit of turning on the external circulation when running at high speeds, there is a high chance that a lot of insects will be bumped into the ventilation duct.

After a period of time, foreign objects and dust in the ventilation duct will emit odors. Failure to clean the evaporation tank leads to the fact that the impurities filtered out by the evaporation tank are discharged by the air conditioning drain pipe, but some of these impurities will stay on the surface of the evaporation tank with cold condensation, thus forming mold and producing peculiar smells.

The solution to the smell of the car air conditioner: check the air conditioning filter: the position of the car air conditioning filter is generally located behind the passenger suitcase, and some models can remove the baffle of the suitcase by squeezing it inward, while some models need to use some simple tools.

When the suitcase is removed, the air conditioner filter can be seen. If you find that the air conditioner filter is dirty, you can replace it by removing the old filter and installing the new filter as it is. Clean the ventilation ducts:

Turn on the air conditioner system to the maximum air volume, turn off the AC button, turn on the external circulation, and spray the air conditioner cleaner at the air conditioner filter. Once the cleaning agent has been sprayed in the desired amount, the doors can be opened and the air conditioning system can continue to run for a while. It is recommended to do it in the face of sunlight, as temperature and UV rays can provide an additional bactericidal effect.

Find a professional for a deep clean: If you can't solve the problem of air conditioner odor by yourself, it is possible that the ventilation ducts and evaporation tank are too dirty and cannot be cleaned up with simple operations. Since parts of the ventilation ducts and evaporation chambers are difficult to reach with ordinary tools, professional auto repair shops also need to use tools such as endoscopes to clean them thoroughly.

Therefore, it is recommended to go to a 4S shop or repair shop for comprehensive maintenance in order to completely solve the problem.

The smell of the car air conditioner is because when the car air conditioner is working, because the temperature of the evaporation box can be as low as nearly 0 degrees Celsius, which is equivalent to a refrigerator, the breeding of fungi is not obvious, once the compressor stops working, the refrigerant stops circulating, the temperature of the evaporation box rises, and the environment on its surface becomes warm and humid, which is the hotbed of fungus breeding. The way to solve the odor: as long as a few minutes before each flame-off, manually turn off the air conditioner refrigeration (usually the AC button), but keep the air conditioner blower running for a period of time (that is, keep the fan on and continue to blow for 1 to 2 minutes), so that the air conditioner evaporation box rises to the ambient temperature and evaporates the moisture on its surface as soon as possible, so as to avoid its moist surface becoming a breeding ground for fungi, and the odor will disappear.