Why is your air conditioner not effective in heating What are the factors
The Central Meteorological Observatory issued a blue warning for cold wave, and there is about to be a cooling rain across the country, and the temperature across the country will drop by 10 to 12 degrees, with a local drop exceeding 15 degrees! Everyone knows that the heating effect of the air conditioner is not so ideal in the cold winter. So why does the air conditioner have a bad heating effect in winter? What are the reasons? This article explains in detail the common factors of poor heating effect of air conditioners.
1. What is the main principle of air conditioning heating?
When the air conditioner is heating, the gas freon is pressurized by the compressor to become high temperature and high pressure gas, enter the heat exchanger of the indoor unit (condenser at this time), condense and liquefy to release heat, become liquid, and heat the indoor air at the same time, so as to improve The purpose of indoor temperature. The liquid freon is decompressed by the throttling device and enters the heat exchanger of the outdoor unit (the evaporator at this time), evaporates and gasifies to absorb heat and becomes a gas, and at the same time absorbs the heat of the outdoor air (the outdoor air becomes colder). The Freon that has become gas enters the compressor again to start the next cycle.
2. Why the colder the weather, the worse the heating effect?
The colder the weather, the lower the outdoor temperature, it is more difficult for the air conditioner to absorb heat from the outdoor air environment, resulting in relatively poor heating effect.
3. During the heating process, why does the indoor unit stop air supply for a period of time, and then automatically turn on after a few minutes?
The air conditioner is defrosting. The indoor unit will stop working during the defrosting process and will continue to work after the defrosting process. When heating in winter, since the evaporation temperature of the outdoor unit heat exchanger (ie condenser) is lower than zero, the outdoor air flowing through the condenser will condense on the fins and form frost. The frost will affect the heat exchange of the condenser. The area and air circulation will affect the heating effect of the air conditioner.
4. How to judge whether an air conditioner is heating normally?
Air conditioner cooling and heating inspection standard: 15-20 minutes after starting up, measure the temperature with the test head of the thermometer at a distance of 10-20mm from the indoor air inlet and outlet. The temperature difference between the air inlet and outlet during cooling should not be less than 10 ℃, in the heating state ( Heat pump type air conditioner) The temperature difference between the inlet and outlet should not be less than 15℃, and the temperature difference between the inlet and outlet of the electric auxiliary heating type air conditioner should not be less than 23℃;
5. Why doesn't the temperature of the air outlet indicate a problem with the air conditioner?
The normal judgment and measurement standard of the air conditioner is mainly based on the temperature difference between the air inlet and the air outlet of the inner unit when the air conditioner is heating. As long as the temperature difference between the two reaches the standard, it can be judged that the air conditioner is no problem. There are many factors affecting the temperature of the air outlet, one is the match between the machine and the environment, the other is the temperature of the room, and other external influences.
6. Why does the air conditioner keep turning on and the temperature rises slowly after reaching a certain temperature?
The room temperature is low, so the air-conditioning heating increases the room temperature more obviously. As the room temperature increases, the difference between the indoor temperature and the outdoor temperature increases, and the more heat is transferred from the room to the outside, so the indoor temperature rises slower. When the temperature difference reaches a certain level, the heat generated by the air conditioner is just transferred to the outdoors and neutralized, so at this level, the temperature will not rise any more.
7. Why do I often hear the crackling sound when the air conditioner is heating?
Most of the exterior parts of the air conditioner are made of plastic. When heating (also during cooling), the plastic parts will expand and contract with heat, and the small deformation of the shell will produce sound. This is normal. Wait for the plastic parts to be finalized. This situation will slowly disappear afterwards.
8. Why sometimes the air conditioner is turned on and smells?
(1) The smell of the newly decorated room is sucked into the air conditioner;
(2) Other odor sources in the room are sucked into the air conditioner;
(3) The newly installed machine has a slight plastic smell in a short time, which will disappear soon;
(4)The air filter of the air conditioner has not been cleaned for a long time.
9. Why is the indoor unit not running water and the outdoor unit running water during heating?
Heating and cooling are just the opposite. The work of the indoor unit and that of the outdoor unit are interchanged. When cooling, the indoor unit is running water, while heating is just the opposite. The frost produced by the outdoor environment temperature is too cold to attach to the fins. At a certain time, the frost needs to be melted into water to flow down.
10. Why does the indoor unit sometimes fluctuate loudly?
One situation is that the air conditioner filter is dirty and the air flow is uneven. Another situation is that when the air conditioner is heating, in order to ensure that the air conditioner blows hot air, the indoor motor automatically adjusts the wind speed according to the heat. There will be a high wind and a low wind. This is normal.
11. Why does the indoor unit occasionally make a sound of running water when heating?
During the operation of the air conditioner, the refrigerant changes from liquid to gas, and from gas to liquid. This is a normal physical phenomenon of air conditioning cooling and heating. The high-speed flow of refrigerant in the air-conditioning pipeline is subject to certain resistance, and the sound of running water is generated. This is a normal phenomenon, especially when people are still at night.
12. Why does the heat come out after a while when it is heating?
The main reason is that our machine has been humanized design and designed with anti-cold wind function. When heating, there is a process of heat accumulation and improvement. If there is wind when the machine is turned on, it will also be cold. When it is very cold in winter, when the machine is turned on, people will easily catch a cold. Under normal circumstances, the hot air should last for about 3-5 minutes, depending on the outdoor ambient temperature at that time. The outdoor temperature is low for a long time, and the outdoor temperature is high for a short time.
13. When heating, why the air conditioner is still blowing after turning off?
The air conditioner is designed to dissipate the residual heat. Once it is turned off, if the fan stops working immediately, a part of the residual heat will be in the machine, which will easily deform some plastic parts.
14.Why does it stop working before reaching the set temperature during heating, and what is the reason?
Because the hot air is light and accumulates in the upper part of the room, the set temperature is different from the actual temperature. At this time, the remote control temperature should be set higher.
15. Why can't the room temperature reach the desired result after the air conditioner is turned on for half an hour?
Because of the rising of hot air, the hot air rises as soon as it hits people during the heating process of ordinary air conditioners, so people still feel cold when the air conditioner is turned on.
Therefore, when buying an air conditioner, the upper and lower sweeping angle of the air deflector is also very important. It is recommended to buy it in general: the hot air of the dual-drive dual air deflector directly reaches the ground, and the large sports air deflector provides 180 degrees of carpet heating.
16.How to deal with the problem of unsatisfactory heating effect of air conditioning in winter?
(1) For heating this season, check whether the remote control of the air conditioner turns on the electric auxiliary heating function. There is a "dry auxiliary heat" button on the remote control. When it is turned on, the remote control of the air conditioner will display "auxiliary heat". Improve heating effect;
(2) The air conditioner can be adjusted to the "super" gear, and the air speed of the air conditioner and the operating frequency of the compressor are increased to further ensure the heating effect;
(3) When the air conditioner is heating, the air guide blades will send air downwards to ensure that the hot air blows downwards. If the air conditioning blades are not downward, adjust the air conditioner to "sweep up and down" to ensure that the air deflector is downward. Better
(4) Check the air output of the air conditioner. If the air output is small, it is recommended that the customer clean the filter. Blocking the filter will also affect the heating effect of the air conditioner.
