Under normal circumstances, the air conditioning and heating drain pipes do not drain, and the drain pipes come out of the internal unit. During heating, the evaporator of the indoor unit is hot and will not produce condensation water. During heating, the indoor unit blows hot air, so there will be no condensation water?
It is normal if a small amount of water drips from the bottom of the outdoor unit. , because the outdoor unit blows cold air when heating, and the defrosting function of the unit decreases as the unit gets older, and the radiator of the outdoor unit will frost and drip if it is turned on for a long time or the frost will melt away after it is turned off.
Extended information:
Heating principle
1. When the air conditioner is heating, the gas Freon is pressurized by the compressor and becomes a high-temperature and high-pressure gas, which enters the indoor unit. The heat exchanger (in this case, the condenser) condensates, liquefies, and releases heat, turning it into a liquid. At the same time, it heats the indoor air, thereby achieving the ultimate goal of increasing the indoor temperature.
2. The liquid Freon is decompressed by the throttling device and enters the heat exchanger of the outdoor unit (evaporator at this time). It evaporates and absorbs heat and becomes a gas. At the same time, it absorbs the heat of the outdoor air (outdoor The air becomes colder), and the Freon that becomes a gas enters the compressor again to start the next cycle.
3. The low-pressure gas inhaled by the compressor becomes high-temperature and high-pressure gas after compression by the compressor. The high-temperature gas increases the water temperature through the heat exchanger, and at the same time, the high-temperature gas condenses into liquid. The liquid enters the evaporator to evaporate. When the evaporator evaporates, there is also a heat exchange medium. Depending on the heat exchange media, the model structure of the machine is also different. Commonly used ones are air cooling and ground source.
4. After passing through the evaporator, the liquid turns into low-pressure, low-temperature gas, and the low-temperature gas is again sucked into the compressor for compression. If the cycle continues like this, the circulating water on the air conditioner side will become hot water at about 45-55 degrees. Hot water is sent to the room that needs heating through pipes. A fan coil is installed in the room to exchange heat between the hot water and the air for heating purposes.
Baidu Encyclopedia-Air Conditioning