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Refrigerator compressor is hot and not cooling Judgement method of refrigerator solenoid valve is good or bad Gas stove solenoid valve working principle and classification Causes and solutions of gas stove solenoid valve not working Refrigerator condenser working principle, function, location, cleaning, classificationDo you know these 10 questions about air conditioning?
Fluorine deficiency: If the air conditioner in your home is an old-fashioned air conditioner that has been used for a long time, it may be because the Freon refrigerant in the air conditioner is gone, and you can continue to use it only by adding Freon. No cleaning: The outdoor unit of the air conditioner is exposed to the outdoor for a long time, and it is easy to absorb dust and debris. If it is not cleaned for a long time, it will affect the heat dissipation performance of the machine and affect the cooling effect of the air conditioner. The filter screen of the indoor unit of the air conditioner will be blocked by dust if it is not cleaned for a long time, resulting in the air conditioner not cooling.
Insufficient horsepower: In other words, the number of air conditioners does not match the size of the room. Generally speaking, the cooling area of 1HP is 10-15㎡, and the cooling area of 1.5HP is 14-22㎡. Of course, larger rooms need to choose a larger number of air conditioners, so as to achieve the cooling effect.
The temperature is too high: the summer is very hot, and even high temperatures in some areas have exceeded 42℃. In this weather, the cooling effect of the air conditioner is often not ideal. This is because when the outdoor unit is in an environment of more than 42°, most air conditioners have difficulty transferring the indoor heat to the outdoor, resulting in no cooling.
2. How much temperature is suitable for the air conditioner
As we all know, the minimum temperature of general air conditioning is 16 ℃, the highest is 30 ℃. The minimum temperature of 16 ℃ is to cool down quickly, not to let you stay in the air-conditioned room at 16 ℃ for a long time. In summer, the air conditioner is used, and the temperature is set between 25°C and 27°C. It should be noted that the temperature difference between indoor and outdoor is not easy to be too large, it is best to control within 10 ℃.
3. Is it better to turn on the air conditioner in summer for cooling or dehumidification?
Let's think about a question first: the same high temperature of 37 ℃, why does the south feel hotter than the north? Because the south is wetter than the north! Human comfort depends on the environment temperature on the one hand, and the humidity on the other. Studies have shown that the human body is most comfortable in an environment with a humidity of 40%-60%. Because the humidity in the south is heavier than in the north, it will be more sultry.
The cooling mode aims to reduce the temperature while removing water vapor from the air. It is suitable for environments with low air humidity, such as in northern areas. Select the cooling mode, the cooling temperature and wind speed can be adjusted.
The dehumidification mode aims to remove water vapor in the air while reducing the air temperature. It is suitable for environments with high air humidity, such as southern areas and rainy days. Select dehumidification mode, the temperature and wind speed of dehumidification can not be adjusted up or down. 4. About air conditioning dripping
This is because when the air conditioner is cooling, the air with a higher indoor temperature and containing more water vapor enters the air conditioner condenser tube and is cooled. Condensed water appears, and water droplets are formed to drip along the drain tube. When heating, the outdoor unit defrosting also generates a lot of water. Water dripping from the outdoor unit of the air conditioner is usually normal.
5. What happened to the air-conditioning indoor unit leaking?
After talking about the outdoor unit dripping, let's take a look at the indoor unit leaking. The most common cause of dripping water in air-conditioned indoor units is the problem of drainage pipes. For example, there are hidden quality problems in drainage pipes, slack and aging, curved shapes, etc. will cause poor drainage, which will cause indoor units to drip.
In addition, if the filter and fins of the air conditioner indoor unit are not cleaned for a long time, a large amount of dust will accumulate, which affects the cooling efficiency of the air conditioner and will also cause water leakage of the air conditioner indoor unit. I will talk about how to clean it in the following question.
Defects in the installation of air-conditioning indoor units can also cause water leakage. For example, if the fuselage is not level or the drain pipe protruding out of the room is too high, the condensate cannot be discharged out of the room smoothly, causing dripping.
6. Why does the air conditioner smell strange?
After using it for a period of time, the air conditioner will often have an odor, but you can rest assured that the air conditioner is not broken, but the air conditioner has not been cleaned for a long time, and the inside of the indoor unit is moldy to produce an odor.
The indoor unit evaporator that breeds a lot of bacteria has not been cleaned for a long time
Due to the large aperture of the air conditioner filter, a lot of dust will adhere to the evaporator of the air conditioner indoor unit. The evaporator will condense when it cools, condensing the moisture in the air on the surface of the evaporator, the humid environment and the dust attached to the surface of the evaporator. Therefore, when the air conditioner smells bad, it should be cleaned immediately.
7. How to clean the air conditioner?
Cleaning the air conditioner filter
In fact, the method is very simple, only need to spend 20 yuan to buy a bottle of special cleaning agent for air conditioners! The main parts that need to be cleaned are the interior of the air conditioner filter, evaporator and indoor unit casing. First, open the casing of the indoor unit, take off the filter of the indoor unit of the air conditioner directly, and wash it with water.
Spray the air conditioner cleaning agent evenly on the surface of the evaporator and let it stand for 15 minutes
Then clean the air conditioner evaporator with a special air conditioner cleaner. There are roughly two types of air-conditioning cleaners. One is foam-like. You need to apply the foam evenly to the surface of the air-conditioning evaporator through the attached thin tube and wait for the foam to melt slowly. The other is spray, which evaporates at a distance. Spray evenly 5 cm from the surface of the device, and wait for 15 minutes.
After cleaning, the evaporator is much cleaner
After 15 minutes, directly install the air conditioner filter into the indoor unit, close the indoor unit shell, and start the cooling mode to work for 15-30 minutes. The detergent and stains remaining on the surface of the evaporator will be discharged through the drain along with the condensed water outdoor.
8. What happens when the air conditioner starts frequently?
First of all, only fixed-frequency air conditioners will start frequently, which is a normal phenomenon, because it needs to maintain the temperature accurately at the set value. If the temperature difference between the set temperature and the room temperature is too small, it will aggravate the frequent activation of fixed-frequency air conditioners.
In addition, if there are windshield objects around the indoor and outdoor units of the air conditioner, the heat dissipation will also be affected, causing the air conditioner to start frequently. Inverter air conditioner will run at low speed to maintain the temperature unchanged after reaching the set value, which can be said to be "non-stop operation".
9. Why did the air conditioner stop before reaching the set temperature?
The working time of the air-conditioning compressor is limited. Normally, it should be lowered to the specified temperature before stopping. However, if the outside temperature is too high or the temperature in the city is set too low, the compressor will rest for a while, even if the temperature is still The temperature has not dropped to the set temperature, which is the self-protection of the compressor itself-shutdown and cooling. If your home's air-conditioning compressor has short working hours and long intervals, that is another matter.
10. Does the air conditioner frequently switch on electricity?
Is it better to turn on the air conditioner or turn it on for a while? What kind of power saving? This issue is also of great concern to everyone. In fact, the power saving of the air conditioner mainly depends on the "start-up rate". When the air conditioner is started, the compressor requires a large current, so it is more expensive. If the frequent switching opportunities cause unnecessary damage to the compressor, I suggest you Do not switch on and off frequently.
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