Adjust cooling in the summer, the indoor unit as evaporator surface temperature is low, the moisture in the air conditioning When water freezes in the evaporator surface air conditioning inside the machine, brought together more after the formation of water. Condensate produced as a conduit to drain away. Similarly, when the air conditioning and heating, air-conditioning machine in central air conditioning and heating Which is good, the outdoor unit in the refrigeration, the outdoor unit temperature is low, it is also absorbing moisture in the air outside. But generally when heating low outdoor temperatures are relatively teach, condenser surface temperature is below 0 degrees, moisture in the air condenses into the condenser surface will freeze or frost after. And as time goes on, the more the more the knot. Thus, the air conditioning heating effect is getting worse. When Icy to a certain degree, air conditioning will start defrosting program of the West, to provide air conditioning and heating effects. Ice melts, it becomes water, which is commonly known as the air conditioner outdoor machine "leaks." Air conditioning and heating when the outdoor unit leakage is normal? This sentence should be changed, air-conditioning and hot water when the outdoor unit is normal central air conditioning, but it should not leak to the outside. Because now like family with a small air-conditioning, such as the bottom of the wall unit, Guiji and other outdoor unit has a drain hole central air conditioning production and can lead to a drain can drain a place, but when the installation does not install it. Also note that some units currently defrosting of random, but also some automation, as well as the shutdown of the central air-conditioning manufacturer, regardless of that, all you do not shut down until the defrost is completed automatically resumes heating. In the case without heating, complete with air conditioning heating can it? Under normal circumstances can be, but the outdoor temperature is below minus 10 degrees Celsius, air conditioning, heating effect is greatly reduced. Not only central air conditioning, the other split air as well. There are ways to solve the above problems - before central air conditioning fan coil units plus an auxiliary heating means (electric heating coil or hot water coil), even at low temperatures, but also to ensure the generation of central air conditioning heat. Central air conditioning installation _ Xi'an Hao Electrical and Mechanical Services (certification) _ Fufeng central air conditioning provided by the Xi'an Hao Electrical and Mechanical Technology Limited. Xi'an Hao Electrical and Mechanical Technology Co., Ltd. (www.029hfkt.com/)(www.029hfkt.com) is Xi'an, central air conditioning leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum to meet customer needs. Xi'an Hao Electrical and Mechanical Services leadership with the staff warmly welcome all inquiries negotiations to create the Electrical and Mechanical Xi'an Hao better future.