The original operation sound of the refrigerator is very small, but if one day it suddenly becomes particularly harsh and noisy, then it is very likely that the refrigerator fan is wrong.

Common refrigerators have condenser fans and evaporator fans.

The role of the condenser fan is to cool the condenser coil of your equipment, and the role of the evaporator fan is to move the air quickly through the evaporator coil of the freezer to carry away the heat.

The two fans run at the same time, and a problem with either motor will cause your refrigerator to sound louder.

Therefore, when we find that the noise of the refrigerator becomes louder, we first need to unplug the power supply to see if the fan motor is loose or other abnormalities.

When the compressor starts frequently, we should first consider whether it is caused by voltage instability.

Under normal circumstances, the voltage between 180-240v refrigerator can start normally, if the voltage is less than 180v, it is the voltage problem.

If the voltage problem is excluded, then the problem point is most likely to appear in the compressor.

The compressor starter damage and compressor winding damage may cause the refrigerator compressor to start frequently. This situation is not able to repair itself, you need to ask a professional maintenance master to conduct a comprehensive inspection of the compressor, find out the specific problems and solve.

What about overheating?

Check the condenser coil!

We can start from the condenser coil of the refrigerator to check, and check whether the fan motor can operate normally. But in fact, in daily life, when there is overheating phenomenon is usually accompanied by other problems, so it is best to ask a professional professional maintenance master to solve.

The reason why many family refrigerators freeze is due to improper use in life. For example, opening the refrigerator for too long can lead to freezing, because it increases the humidity level in the refrigerator.

From a preventive point of view, to reduce the number of freezer freezes is to close the freezer door as soon as possible after each use of the refrigerator to ensure that the humidity level does not rise too much.

In addition to the problem of their own use habits, the refrigerator door has a ring of rubber called a seal.

If your refrigerator often freezes, you need to consider whether there is a problem with the sealing ring.

The inspection method is also very simple, take a piece of paper with the refrigerator door, and then pull out, if it is easily pulled out, the sealing ring has appeared loose leakage phenomenon.

The condenser of the refrigerator is used for heat dissipation, which releases the heat generated by the refrigerator during refrigeration into the surrounding environment. In the current design, there are two main design methods, one is to hang it in the back of the refrigerator, which is more common in the early period, and the other is to hide it in the two sides of the refrigerator, which is a relatively new way, its main purpose is to be beautiful and reduce the condensation of the side plate.

When the refrigerator is cooling at the same time, the condenser begins to heat, when the refrigerator is shut down, the refrigeration stops, the temperature of the condenser is also slowly reduced, and finally the temperature has been reduced to 2 to 3 degrees lower than the ambient temperature. In summer, you can feel heat on both sides, but there is always a higher temperature on one side, in other seasons, there may be a side that is not hot, this is because the heat load is small, the area of the condenser is relatively large, so the temperature on the other side has been comparable to the ambient temperature.

The fastest way to check whether the refrigerator is good or bad is to feel the heat of the condenser shortly after the boot, if not, the refrigerator may not cool. The maximum temperature of the refrigerator condenser is generally about 10 degrees higher than the ambient temperature. Since the condenser is glued to the side plate, there is a certain difference in temperature at different points of the side plate.

(1) Cause analysis: In the use of the refrigerator, sometimes you can hear the shaking sound or crackling sound issued by the condenser, this sound mostly appears in the louver condenser, so the condenser is the cooling tube squeezed on the louver plate heat sink, forming a whole, but in the production process, or due to other reasons, often cause the combination between the cooling tube and the heat sink to become poor. Therefore, in the operation of the compressor, due to the difference in temperature difference between the inside and outside of the condenser tube, as well as the difference in the thermal expansion coefficient of the cooling tube and the heat sink, the two produce a loosening phenomenon, which makes a crackling sound, although this sound does not affect the use of the refrigerator temporarily, but the long-term sound is annoying, and the cooling tube will be damaged. Causing refrigerant leakage.

(2) Elimination method: Stop the operation of the compressor, and then drop 502 glue in the loose place of the cooling pipe and heat sink, dry solid after a day, and then start the compressor to operate, there will be no noise.

1, the ambient temperature is too high:

Each refrigerator has its own climate type, such as SN, N, ST, T, etc. Generally, the highest ambient temperature of SN and N refrigerators is 32 degrees, and if the temperature exceeds this temperature, it is easy to have an environment where the refrigerator is not shut down, which is mainly caused by the refrigerator's cooling capacity is too small, or it must not be the compressor's power is too small. The ST and T refrigerators can be stopped at higher temperatures, such as at a high temperature of 38 degrees, the refrigerator can still be stopped normally. Therefore, when buying a refrigerator, be sure to pay attention to the nominal climate type of the refrigerator is very important, if the local temperature is higher in the summer, it is best to choose a refrigerator that can adapt to a high temperature environment. When the ambient temperature is high, the heat load of the refrigerator increases, and the boot time is long, so the door should be reduced as much as possible at this time.

2, the temperature adjustment is too low:

For the mechanical temperature refrigerator, because the temperature cannot be displayed, when the thermostat is adjusted to a position, it is generally no longer adjusted, but the temperature inside the refrigerator is changing, so in the summer, it will be due to the adjustment position of the thermostat is too low, causing the refrigerator to not shut down. If you feel that the temperature in the refrigerator is too low, you can turn the thermostat down in the counterclockwise direction, or turn the number down. The computer refrigerator has great advantages in this respect.

3, frost on the wall of the cold room:

For mechanical temperature control refrigerators, especially in high temperature environments, frost can be seen on the wall of the cold room, and the frost layer is thick, causing the refrigerator to not stop. The main reason for this situation is that the temperature adjustment of the thermostat is too low, or the storage position of the food in the box is wrong, the refrigerator is opened too many times, and the refrigerator door seal is not good. The solution is to first shut down the refrigerator, frost off the cold room wall, adjust the position of the thermostat, check the door seal, etc., and then restart, if the refrigerator is normal, this phenomenon will be dealt with, if the refrigerator itself has a problem, should find the manufacturer to deal with.

4, the refrigerator thermostat failure:

Due to the failure of the refrigerator temperature controller itself, the refrigerator will not stop, but this non-stop will not only be in a high temperature environment, in all ambient temperatures, but in a high temperature environment the situation is more serious. The main reason is that the mechanical thermostat leaks fluorine, or the temperature sensor can not feel the temperature, and the control circuit board of the computer refrigerator is faulty.

5. Refrigerant leakage in the refrigerator:

This situation is not the early performance of the refrigerator is not refrigerated, the temperature of the refrigerator will rise after a long time, and slowly begin to not refrigerate, but the compressor of the refrigerator is still working, a good way to judge the refrigerator is good or bad, if the compressor is working, but the two sides of the refrigerator do not heat (most of the refrigerators are like this now), you can preliminarily determine.

1. Whether the compressor is stopped, if it is not stopped, it can be analyzed from the following:

The temperature in the refrigerator is high, which has two conditions: First, the refrigeration system leaks fluorine, that is, there is no refrigerant, although the refrigerator has been running, but the temperature in the box can not be reduced, after too long, the food in the box will be broken, so it should be repaired in time. Generally, as long as it is not a new refrigerator, this kind of situation is very slow, its early stage is that there is frost on half the side of the refrigerator, and the other half is frost-free, the frosting edge is thicker, and after a longer time, there will be no frost in the refrigerator, then there may only be some water balloons, and the temperature in the box is higher. This kind of refrigerator is generally difficult to repair, because the leak point is difficult to find, so it can not maintain a longer use time after repair, if the leak point is still relatively zou, at this time through oxygen welding can be handled. The second reason for the high temperature is frost in the evaporator, which is mainly

Air cooled refrigerator

This refrigerator has only one evaporator, when the frost on the evaporator can not be melted off, it will make the air duct clogged, the cold capacity can not go out, so the refrigerator can not be refrigerated. The reason for this is that there is a problem with the defrosting system, which may be a malfunction of the defrosting timer, or the heating pipe has been burned off.

2, the compressor can not start:

1) The refrigerator has no power, we can open the refrigerator door, if its internal light can be lit, indicating that the refrigerator has electricity, if the light is not lit, you can check whether the total power supply has power, and then check the refrigerator fuse (not all refrigerators have), and finally check whether the thermostat contact is wrong.

2) Whether the compressor is burned out, you can check whether the motor coil is burned, and finally check the situation of the starter, sometimes the overheat protector is in action, and it takes a certain time to start after the compressor temperature drops.

3) The thermostat can not be reset, because the contacts sintered together, so that it can not be separated.