This hotel has three labels. The first label is refrigeration, the second label is heating, and what is the third label?

Hotel air conditioning has three signs: the first sign is refrigeration, the second sign is heating, and the third sign is dehumidification. When the air conditioner is started, the corresponding heating symbol pattern is the sun symbol, and if there is a snowflake pattern, it means refrigeration, and the snowflake pattern is the symbol of refrigeration, and the water drop is the symbol of dehumidification. Air conditioning, that is, air conditioner, refers to the equipment that manually adjusts and controls the temperature, humidity, flow rate and other parameters of ambient air in buildings or structures.