There are several reasons why the air-conditioning heating does not respond:
First, the outdoor temperature is too low. The air-conditioning heating draws heat from the outside for heating. If the outdoor If the temperature is very low, the heating effect will not be good.
Secondly, the air-conditioning outlet has not been cleaned for a long time and has accumulated a lot of dust, so hot air cannot be blown out when heating is started.
Third, air conditioners use Freon for refrigeration and heating. If the heating effect is not good, it may be that the Freon is almost consumed. You can contact maintenance personnel to add more.
Extended information
Around 1000 BC, the Persians had invented an ancient air-conditioning system that used wind rods installed on the roof to let the natural wind from the outside pass through the cold water. And it is blown into the room to make people indoors feel cool.
In the 19th century, the British scientist and inventor Michael Faraday discovered that compressing and liquefying a certain gas could freeze the air. This phenomenon occurred when liquefied ammonia evaporated, and his idea still remained at that time. in theorizing.