Common faults and solutions of refrigerators are as follows:
1. The refrigerator does not cool:
1. Is the compressor shut down? If not, you can restart it. The following analysis
The temperature inside the refrigerator is too high. There are two situations:
First, the refrigeration system leaks fluorine, that is, there is no refrigerant. Although the refrigerator has been running, there is no The temperature cannot drop.
The second reason for the high temperature is frost in the evaporator. This situation is mainly for air-cooled refrigerators. This type of refrigerator has only one evaporator. When the frost on the evaporator cannot be melted away, The air duct will be clogged, and the cold energy cannot escape, so the refrigerator will not be able to cool.
The reason for this situation is that there is a problem with the defrost system. It may be that the defrost timer is faulty, or the heating tube has burned out.
2. The compressor cannot start:
If the refrigerator has power, we can open the door of the refrigerator compartment. If the light inside lights up, it means the refrigerator has power. If the light does not light up, You can check whether there is power at the main power supply, then check the refrigerator fuse (not all refrigerators have it), and finally check whether there is a problem with the contacts of the thermostat.
To check whether the compressor is burned out, you can check whether the motor coil is burned out. Finally, check the condition of the starter. Sometimes the overheat protector is working and it takes a certain amount of time for the compressor temperature to drop before it can be started. .
The thermostat cannot be reset because the contacts are sintered together and cannot be separated.
2. The main reasons why the refrigerator does not stop are as follows:
1. Is the ambient temperature too high?
Each refrigerator has its own climate type. Such as SN, N, ST, T type, etc. Generally, the maximum ambient temperature for SN and N type refrigerators is 32 degrees. If this temperature is exceeded, it is easy for the refrigerator to stop shutting down. This is mainly due to the fact that the cooling capacity of the refrigerator is too small, or that the power of the compressor is too small.
2. The temperature adjustment is too low
For mechanical temperature refrigerators, since 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 The temperature is changing, so in summer the refrigerator may not stop due to the thermostat being set too low.
3. Frost on the wall of the refrigerator compartment
For mechanical temperature-controlled refrigerators, especially in high temperature environments, frost can be seen on the walls of the refrigerator compartment, and the frost layer is thick, causing The refrigerator does not stop.
The solution is to first stop the refrigerator, defrost the wall of the refrigerator compartment, adjust the position of the thermostat, check the door seal, etc. and then restart it. If the refrigerator is normal, this phenomenon will occur. If there is a problem with the refrigerator itself, it should be dealt with by the manufacturer.
4. The refrigerator thermostat fails
The failure of the refrigerator thermostat itself will also cause the refrigerator to not shut down, but this kind of non-stop does not only occur in high temperature environments. It exists at all ambient temperatures, but the situation is more serious in high-temperature environments.
The main reason is that the mechanical thermostat leaks fluorine, or the temperature sensor head cannot feel the temperature, or the control circuit board of the computer refrigerator is faulty.
5. Refrigerant leakage in the refrigerator
This situation is not the early manifestation of the refrigerator not cooling. After a long time, the temperature of the refrigerator will rise and it will gradually start to stop cooling, but the refrigerator The compressor is still working. If the compressor is working but the sides of the refrigerator are not generating heat, you can make a preliminary determination.
Baidu Encyclopedia - Refrigerator