These are the common reasons for the poor heating effect of air conditioning

1 What is the main principle of air conditioning heating? Answer: mainly through the outdoor unit to absorb the heat in the air, through the refrigerant circulation in the pipeline, the absorbed heat will be brought to the indoor unit, through the work of the indoor unit, the heat will be provided to the indoor unit, so as to improve the indoor temperature 2 Why is the colder the weather, the worse the heating effect? A: it is mainly because the colder the weather is, the lower the outdoor temperature is, and it is more difficult for the air conditioner to absorb the air heat from the outdoor air environment, resulting in the relatively poor heating effect 3 Why is it suggested to use other equipment for heating below - 5? A: in winter, when the air conditioner is heating, the air conditioner absorbs the heat of the outdoor air through the heat exchanger (i.e condenser) of the outdoor unit, and then transmits the heat to the room through the heat exchanger (i.e evaporator) of the indoor unit At the same time, when heating, the heat exchanger of outdoor unit is used as evaporator When the outdoor temperature is lower than - 5 ℃, the heat exchange temperature difference between condenser and outdoor air will be close to 0 Therefore, there is no heat exchange effect, so the overall heating effect of air conditioning is poor, or even can't make heat Therefore, it is necessary to start the auxiliary electric heating function of air conditioner or use other heating equipment 4 Why should the air conditioner defrost? Answer: when heating in winter, because the evaporation temperature of the outdoor heat exchanger (i.e condenser) is lower than zero, the outdoor air flowing through the condenser will condense on the fins and frost Frost will affect the heat exchange area and air flow of the condenser, thus affecting the heating effect of the air conditioner Therefore, in order to ensure the heating effect of air conditioning, defrosting is necessary 5 How to judge whether the heating of an air conditioner is normal? Answer: the standard of cooling and heating test for air conditioner: after 15-20 minutes of starting, use the inspection head of thermometer to measure the temperature at the place 10-20 mm away from the indoor air inlet and outlet When cooling, the temperature difference between the air inlet and outlet should not be less than 10 ℃ In the heating state (heat pump type air conditioner), the temperature difference between the air inlet and outlet should not be less than 15 ℃, and the temperature difference between the air inlet and outlet of electric auxiliary type air conditioner should not be less than 23 ℃ 6 Why can't the temperature of the air outlet represent the problem of the machine? A: the temperature of the air-conditioning outlet cannot be used to determine and measure whether an air-conditioner is normal The standard for normal judgment and measurement of air conditioning is mainly determined by the temperature difference between the air inlet and the air outlet of the internal unit when the air conditioning is heating As long as the temperature difference between the air inlet and the air outlet reaches the standard, we can judge that there is no problem with the air conditioning There are many other factors that determine the temperature of the air outlet One is the matching between the machine and the environment The other is the temperature of the air in the room itself, and other external influences The air conditioner itself has a certain power and air volume The normal judgment of the machine is mainly based on their ability to improve the air temperature, that is, the temperature difference between the inlet and outlet! If the temperature of the air inlet is high, the temperature of the air outlet will be high Otherwise, if the temperature is low, the temperature of the air outlet will be lower It's a principle of rising tide and rising ship Therefore, the temperature of the tuyere can not be used to evaluate and judge whether a machine is normal in heating and cooling 7 Why is the air conditioner on all the time? Why is the temperature difficult to rise to a certain extent? A: the room temperature is low, so the air conditioning heating has a significant effect on the room temperature With the increase of room temperature, the difference between indoor temperature and outdoor temperature increases, the heat transfer from indoor to outdoor will be more, so the indoor temperature will rise slowly When the temperature difference reaches a certain degree, the heat generated by the air conditioner is just transferred to the outside and neutralized, so in this degree, the temperature will not rise again 8 Why do air conditioners often hear the crackling noise when heating? Answer: most of the appearance parts of the air conditioner indoor unit are made of plastic When it's heating (the same when it's cooling), the heat expansion and cold contraction of the plastic parts, the sound generated by the small deformation of the shell, are normal After the plastic parts are finalized, the situation will gradually disappear 9 Why does the air conditioner smell when it is turned on? A: (1) the smell of the newly decorated room is inhaled into the air conditioner; (2) other odor sources in the room are inhaled into the air conditioner; (3) the newly installed machine has a slight plastic smell in a short period of time, which will disappear soon; (4) the air filter screen of the air conditioner has not been cleaned for a long time 10 Why is the indoor unit not running water when heating, and the outdoor unit running water? Answer: heating and cooling are just the opposite The working conditions of indoor unit and outdoor unit are interchanged When cooling, it is the running water of the indoor unit, and the heating is just the opposite, that is, the water produced by the outdoor unit is not condensed water flowing down the fins of the condenser, but frost is formed (the frost is mainly produced by too cold ambient temperature) attached to the fins, which can only flow down after defrosting and melting at a certain time 11 Why does the wind noise of indoor unit sometimes change from big to small? Answer: there are two important situations in this situation One is that the filter screen of the user's air conditioner may be dirty and the air flow is uneven The other is that when the air conditioner is heating, in order to ensure the air supply temperature in the air conditioner room, the indoor motor automatically adjusts the fan's wind speed, resulting in a high air and a low air It's normal When this problem occurs, you can check the filter screen first 12 Why does the indoor unit occasionally have the sound of "splashing" water when heating? A: during the operation of the air conditioner, the state of the refrigerant is constantly changing, with liquid state changing into gas state and gas state changing into liquid state This kind of normal physical imagination exists at a certain speed in the refrigerant Due to certain resistance, the ashes produce a certain "splashing" sound of running water, which is a normal phenomenon, especially when people are still at night 13 Why does it take a while for the engine to turn on when heating? Answer: it is mainly about the humanized design and the anti cold air function During heating, there is a process of heat accumulation and promotion If there is a wind coming out when the machine is started, it is also a cold wind In winter, it is very cold When the machine is started, it is easy for people to catch a cold Generally, under normal circumstances, the hot wind comes out after 3-5 minutes The specific situation depends on the outdoor environment at that time 14 When heating, why is the air conditioner still blowing after shutdown? Answer: it is mainly because our air conditioning design has the function of dissipating residual heat When the machine is in use, once it is shut down, if the fan stops working immediately, some of the residual heat will be in the machine, which will affect the utilization of heat Secondly, because the heat is concentrated in the indoor machine, it is easy to cause deformation to some plastic parts 15 Is it normal to turn red when the electric auxiliary electric heating is started? Answer: generally, the electric auxiliary heating pipe will not turn red, but it will turn red when the voltage is too high, or the air is low, or the filter screen is blocked You can check the voltage or clean the filter screen or set the high air operation If it turns red locally, the electric heating wire in the electric heating pipe is not evenly wound, resulting in the local heat is too high It can be explained to the user that redness of the electric heating pipe is a normal phenomenon 16 Why does it stop working before reaching the set temperature when heating? What's the reason? Answer: because the hot air is light and accumulates in the upper part of the room, and the temperature detected by the room temperature probe of the internal machine is higher than the temperature of the lower part of the room, so the setting temperature of the remote controller has a certain temperature difference compared with the room temperature At this time, the setting temperature of the remote controller should be 4 ~ 6 ℃ higher than the ideal ambient temperature 17 When heating in winter, what happens when the outdoor unit emits heat and leaks water? A: This is a normal phenomenon when the air conditioner is defrosting Because the heat pump air conditioner needs to absorb heat from the outside through the outdoor unit heat exchanger in winter, the surface temperature of the external unit heat exchanger is very low when it works, and the frost gradually becomes too much, which will affect the heating effect, so the air conditioner is equipped with defrosting function, which is automatically controlled by the computer board of the air conditioner, and the defrosting time is about 10 minutes, when defrosting, the outdoor unit has a melting water flow 18 When heating, why does the indoor unit stop supplying air for a period of time and turn on automatically for a few minutes This is the defrosting of the air conditioner When the air conditioner operates for a period of time, the outdoor condenser will form a thick frost If the frost is not melted, it will directly affect the heating effect of the air conditioner Therefore, when the air conditioner operates for more than 40 minutes and reaches the defrosting conditions, the air conditioner will defrost During the defrosting process, the indoor unit will stop working and work again after the defrosting 19 Why can't the room temperature reach the ideal effect when the air conditioner is turned on for half an hour? (1) heat making in this season, check whether the air conditioner remote control turns on the electric auxiliary heat function There is a "dry auxiliary heat" button on the remote control After turning on, the air conditioner remote control will display "auxiliary heat" At this time, the auxiliary heat is turned on to improve the heating effect (2) The air conditioner can be adjusted to the "super" position, the air speed of the air conditioner and the operating frequency of the compressor can be increased to further ensure the heating effect; (3) when the air conditioner is heating, the air guide vane will supply air downward to ensure that the hot air is blowing downward If the air guide vane of the air conditioner is not downward, the air conditioner "up and down sweeping" should be adjusted to ensure that the air guide vane is downward and the effect is better; (4) Check the air volume of air conditioning heating If the air volume is small, it is recommended that customers clean the filter screen, and the clogged filter screen will also affect the heating effect of air conditioning.