What are the reasons for the poor cooling effect of air conditioning?

The weather is hot in summer, if you don't have an air conditioner to accompany you, it feels like a year. But if you have an air conditioner in your home but find that the air conditioner is not cooling, do you feel even more chilling? So what are the reasons why the air conditioner is not cooling? What should I do in such a situation? Xiaobian to tell you why the air conditioner is not cooling and how to solve it.

1. The refrigerant is not enough or leaking

If the air conditioner is used for a long time, the cooling effect of the air conditioner will become worse. The refrigerant of the air conditioner It will gradually volatilize over time. When encountering such a situation, you need to check whether the air conditioner itself has refrigerant leakage.

Solution: The refrigerant of the air conditioner is not enough. Just add enough refrigerant for the air conditioner to cool the air conditioner to solve the problem of not cooling the air conditioner. However, if the air conditioner refrigerant is not enough because of refrigerant leakage, we need to seal the leaking part of the air conditioner by welding and repairing, and then adding enough refrigerant to solve this problem.

2. The air conditioner is not cleaned for a long time.

If the air conditioner is not cleaned for a long time, it will also cause the air conditioner to become uncooled. After a long time of accumulation of dust on the radiator of the air conditioner, The radiator of the air conditioner will not be able to dissipate heat in time, and the heat dissipation effect will be worse, resulting in the air conditioner not being cooled.

Solution: Clean and maintain the air conditioner in time so that the radiator of the air conditioner can dissipate heat normally and improve the heat dissipation effect of the radiator.

III. Blockage of the air conditioning refrigeration system

Blockage of the air conditioning refrigeration system will also cause its refrigeration function to fail to work normally. Under normal circumstances, the outdoor unit starts and stops. Frequently, the indoor unit can operate normally by remote control, but the outdoor unit starts and stops in about three minutes, and the air is not cold within three minutes, which can be judged as a refrigeration system failure.

Solution: Remove the filter and capillary with nitrogen, and then blow the filter, capillary, outer evaporator, pipeline, etc. to remove the dust inside.

Fourth, the external environment temperature is too high

This kind of uncooled situation is common when our outdoor unit is installed in a relatively closed space or around the outdoor unit The temperature of the air conditioner is too high, so it is extremely easy to cause the heat emitted by the radiator to flow away due to the lack of air circulation in the small space where the outdoor unit is located, and the air conditioner does not cool; there is also a common saying that when outdoor When the temperature exceeds 43 degrees, it is difficult for most air conditioners to transfer indoor heat to the outdoors through the radiator of the outdoor unit, which will also cause the air conditioner to be uncooled.

Solution: Change the use environment of the outdoor unit, move it away from the high-temperature environment or make the surrounding air of the outdoor unit easier to circulate.

Fifth, the power of the air conditioner is not enough

The power of the air conditioner is not enough. It may be because the power of the air conditioner is low, but it needs to provide a large space for cooling, or the room The airtightness is poor, the doors and windows are not closed properly, and there are more heat sources in the room.

Solution: To deal with the problem of low air conditioner power but to provide cooling capacity in a large space, it is necessary to match the power of the air conditioner with the size of the room that provides cooling capacity. At the same time, there are more heat sources in the room. Improve the use environment of the room and increase the tightness of the space.

Sixth, the air-conditioning compressor does not rotate

The compressor has a thermal protection action (or poor contact) due to excessive current; the compressor's operating capacitor Decrease in capacity or damage; improper temperature control of the air conditioner or damage to the temperature detection probe will cause the compressor of the air conditioner to not rotate, thereby affecting the cooling effect.

Solution: Turn on, the internal unit is operating normally, and the outdoor unit is turned on within a few minutes, the fan is running, and the compressor does not turn. (The method of judging that the compressor does not turn: use a card meter to measure the current value in the outdoor unit junction box, because the fan power is small, it is easy to make a judgment.)

If the compressor is running without cooling , You can feel whether the joint of the outlet pipe (thin copper pipe) of the outdoor unit is hot during operation, and whether the suction pipe (thick pipe) feels cold. If the suction pipe is not cold and the outlet pipe is not hot, it is a manifestation of insufficient fluorine gas. If the suction pipe is very cold, check whether the fan of the indoor unit is rotating. If the capacitor is broken and the compressor does not rotate, it is recommended that the air conditioning repair company replace the capacitor.

Seven. The copper pipe between the outdoor unit and the indoor unit is too long.

Some air conditioners may be ventilated due to installation needs or improper installation. The tube is too long, so the heat transfer efficiency is low and the air conditioner will not be cooled.

Solution: Use an appropriate length of copper pipe between the outdoor unit and the indoor unit of the air conditioner. The maximum allowable length of the connecting pipe of the air conditioner is stipulated. The maximum length of one horse cannot exceed 8 meters, 1.5-2 horses. The maximum length cannot exceed 10 meters, and more than 2 horses cannot exceed 15 meters. The height difference between indoor and outdoor units should not exceed 5 meters.

8. Air conditioner power supply problem

The air conditioner is not cooling, you can check whether the air conditioner's power supply is plugged in, and whether the air conditioner's connector and power supply are not in contact In the state of spirit, if the air conditioner is not connected to the power supply or there is bone mass, of course, there will be no cooling.

Solution: If there is a problem with the power supply of the air conditioner, you only need to re-plug the power supply of the air conditioner to ensure that the air conditioner can be energized normally. If the power supply fails, you need to find the corresponding repair Personnel to overhaul.

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