1, supplement indoor oxygen. Due to the decrease of indoor oxygen consumption, it is necessary to supplement outdoor air with high oxygen content to improve the oxygen content of indoor air.
2. Exhaust indoor dirty air. Ventilation and air conditioning constantly update indoor air, timely discharge indoor odor, improve air quality, and benefit human health.
3. Moisturize. Ventilation and air conditioning can achieve moisture retention by supplementing outdoor air with high moisture content. ?
Extended data:
Drying/auxiliary heating function: In cooling and dehumidification mode, press this button to set drying on (the word "drying" is displayed) or off (the word "drying" disappears). After startup, the default is drying off. In automatic, air supply and heating modes, the drying function cannot be set, and the word "drying" is not displayed.
In heating mode, press this key to set auxiliary heating on (display "auxiliary heating") or off (display "auxiliary heating off"). In any case, entering the heating mode defaults to auxiliary heating. In automatic, dehumidification, refrigeration and air supply modes, the auxiliary heating function cannot be set, and the word "auxiliary heating" is not displayed.