How to adjust the central air conditioning in the hotel?

Adjust the function selection key, see a small sun sign on the screen, which is the heating mode, and then raise the temperature, generally choose about 26 degrees. Wait 3 minutes for preheating time, and hot air will be blown out. There won't be too much hot air at first, and it will take some time. If it doesn't get hot after a while, there is something wrong with your machine.