This can be a serious problem. You have contacted the repair service. Just this behavior of the air conditioner may not lead to the most pleasant outcome. I bought an air conditioner about a year ago, which began to work poorly after three months of work. But there was nothing serious, that is, the smell of burning or some strange sounds. Four months later, when it was turned on, it began to smell weird and warm air began to come out of it. Then I decided to search the Internet for what to do if aircon not cold. I found video tutorials on how to deal with this problem myself. Still, in my opinion, the best solution was to hand it over for repair.
