There are many reasons why the smell of the air conditioner can be caused by the cooling mode, and I will explain in detail the possible causes of the smell and the corresponding treatment methods below.
The filter has not been cleaned for a long time. The filter collects dust and dirt from the air, and if the filter is not cleaned or replaced for a long time, the bacteria and dirt that accumulate in it may produce an unpleasant taste. The solution is to clean or replace the filter regularly. Inspect and follow the manufacturer's recommendations for maintenance.
Mold or musty smell. In a humid environment, mold can grow inside the air conditioner or have a musty smell. This is usually due to the inability of moisture to be completely removed. Try cleaning your indoor evaporator and drain with a special aircon cleaner, or have a professional technician clean and maintain it.
Ice melt agent dripping. There may be ice melting agent dripping on the evaporator and condenser of the air conditioner, resulting in an unpleasant taste. This may be due to the quality of the ice melter itself, or damage to the refrigeration system. It is recommended to stop the air conditioner immediately and contact a professional technician for inspection and repair.
Foreign objects trapped in the air conditioner. Sometimes, small animals or debris can get trapped in the air conditioner, resulting in odors. In this case, the air conditioner should be deactivated immediately and the interior should be carefully inspected for foreign objects. If a foreign object is found, it should be safely removed by a professional technician.
Condensate discharge issues. If there is a problem with the air conditioner's drainage system, the condensate may not drain smoothly, resulting in water accumulation at the evaporator or drain pipe, resulting in an unpleasant taste. It is possible to clean the condensate discharge pipe and check whether the drainage system is functioning properly, and it is necessary to consult a professional maintenance personnel to deal with it.
Use of inferior materials. Some cheap or low-quality materials may produce unpleasant chemical odors during the refrigeration process. Therefore, when buying an air conditioner, it is advisable to choose a brand of reliable quality and avoid using low-quality refrigerants. If there is a suspicion of a material quality problem, please contact the manufacturer or a professional technician for a solution.
Review and adjust the air conditioning settings. Sometimes, the setting of the air conditioner can also cause taste problems. You can check whether the humidity regulation function of the air conditioner is working properly, if the set humidity is too high, it may cause a humid environment, which can exacerbate the odor problem. Properly setting the humidity and temperature range of your air conditioner can improve the taste problem.
Keep the indoor environment clean. Maintaining a clean indoor environment is also essential to prevent and address air conditioning odor issues. Clean indoor spaces regularly, maintain hygiene, and make sure there are no food scraps or other dirt accumulating near the air conditioner.
In summary, there can be a variety of reasons for the smell of the air conditioner when the refrigeration mode is turned on, including long-term failure to clean the filter, mold growth, ice melt agent dripping, foreign matter entering the air conditioner, condensate discharge problems, use of inferior materials, air conditioning installation problems, and an unclean indoor environment.