Causes And Solutions Of Frequent Shutdowns Of Air Conditioners

Summer is the happiest time for us. I don’t know if you like it or not. Anyway, I especially like summer. Not only can I wear beautiful summer clothes, but I can also blow on the air conditioner. It’s very pleasant. Today, Canada Energy Solution air conditioner repair Let’s talk to you about a popular issue, what are the causes and solutions for frequent air-conditioning shutdowns?

Why does the air conditioner shut down

All fixed-frequency air conditioners will shut down during normal operation. The reason for this is inseparable from its working state-when the fixed frequency air conditioner is working, it needs full power cooling. When the indoor temperature reaches the set temperature, the outdoor unit stops until the indoor temperature rises, and the air conditioner restarts. Refrigeration.

In other words, the purpose of stopping the fixed-frequency air conditioner is to maintain the indoor temperature so as to prevent the temperature from falling continuously-as long as the (compressor) starts, the fixed-frequency air conditioner is full-power cooling, and it cannot maintain the indoor temperature by blowing small air ( Inverter air conditioner can).

But there is a kind of malfunction that can make people more annoyed, that is, the air conditioner keeps shutting down and restarting. In this way, not only does the indoor temperature fluctuate, but the compressor will generate a relatively large current when it starts, which consumes a large amount of electrical energy. In the long run, the power consumption of air conditioners will inevitably increase greatly. So what causes the frequent shutdown of the air conditioner?

Reasons for frequent downtime

Frequent shutdowns of air conditioners are classified into two types: no-failure shutdown and failure shutdown.

Trouble-free shutdown

The shutdown of the air conditioner is planned-the air conditioner will shut down when the indoor temperature is reached. This is a normal phenomenon, but why is the frequency of shutdowns high? This is related to the selection of air conditioners-the greater the cooling capacity of the air conditioner, the faster the cooling speed. Large air conditioners are used in small rooms, and the cooling capacity generated by the air conditioners can quickly reduce the indoor temperature, so the air conditioners shut down. If coupled with the poor thermal insulation of the room, the indoor temperature will soon rise again, and the air conditioner will start again. (Sometimes the set temperature of the air conditioner is too high-the set temperature is close to the room temperature, which will also reduce the startup time of the air conditioner compressor. But it will not reduce the downtime-and there will be no frequent shutdowns.)

To avoid this situation, it is necessary to accurately choose the size of the air conditioner, and do not blindly greet it.

Downtime

When the air conditioner is shut down due to a malfunction, the indoor temperature will usually not be the set temperature after shutting down either too high or too low. The frequent shutdown of the air conditioner caused by the failure not only consumes a lot of air conditioner life and electric energy but also greatly reduces the comfort level in the room. Most air conditioners will display a fault code in the temperature display area of ​​the indoor unit after a fault shutdown, such as E1.E2.P1.P2…Different brands of air conditioners have different meanings for the fault codes, which can be checked by referring to the air conditioner instruction manual.

There are two types of faults that will cause the air conditioner compressor to start and stop frequently, namely the temperature sensor fault and the compressor overheating fault.

There are generally three temperature sensors for air conditioners (individual models of air conditioners may have more), which are located in the indoor unit part, the duct part and the outdoor unit part. After the temperature sensor is garbled, it cannot accurately measure the temperature, which will cause the air conditioner compressor to start and stop frequently.

There are many reasons for compressor overheating. After overheating, the compressor will start the protection shutdown function, and it will start again when the temperature drops. The conditions that may cause the compressor to overheat are as follows.

Compressor overheating

1. Abnormal pipeline pressure

If the pressure in the air conditioning pipe is too high or too low (generally, the compressor generates heat due to too high), it may cause the compressor to overheat. The possibility of abnormal pipeline pressure is: pipeline blockage, pipeline damage (dents, etc.), refrigerant abnormality-the common refrigerant is too much, that is, too much is added when adding fluorine.

2. Leakage heating

There is a capacitor in the outdoor unit. If the capacitor is damaged and the capacity decreases, it will cause leakage. Leakage current passing through the compressor will cause the compressor to generate heat.

3. Motor failure

The outdoor unit fan motor generates heat when it is working, and it will not cause the compressor to overheat under normal conditions. Once the starter malfunctions, it will increase the heat generation of the fan motor. The lighter one will cause the compressor to overheat, and the more severe one will directly burn the fan motor. After the motor is burned, the heat generation will be higher.

4. The condenser is too dirty

The condenser of the outdoor unit is directly behind the outdoor unit-the aluminum fin of the outdoor unit. Condenser heat dissipation is unfavorable, causing the refrigerant temperature in the compressor to be too high. The problem can be solved by cleaning the aluminum fins of the outdoor unit.

The above are the reasons and solutions for the frequent start and stop of the air conditioners prepared by Canada Energy Solution air conditioner maintenance. Hope that through the explanation of the above article, you can find the cause of the failure, and find the professional maintenance personnel you need through us, and come to your door. Solve the problem quickly!