How to repair the refrigerator refrigeration failure?
1, the refrigerator is equipped with a refrigerator thermostat, and the temperature of the refrigerator does not reach the temperature required by the thermostat, so it is not stopped.
If the compressor stays around the clock, the refrigerator may cause the refrigerant to limit the cold temperature. This phenomenon mainly occurs in air-cooled refrigerators.
The reason is that the defrosting of the evaporator of the refrigerator is broken, which leads to ice blocking. It is not ruled out that the air cooler is broken, and the items in the refrigerator block the air outlet, resulting in poor cooling effect.
2. The reason why the refrigerator is not cooled may be that the refrigeration system leaks and the refrigerant is completely exhausted. Although the compressor is running, there is no refrigerant evaporation and heat absorption, so the temperature in the refrigerator will not drop.
3. The refrigerator temperature of the direct cooling refrigerator is automatically adjusted with the adjustment of the refrigerator temperature, which can reduce the refrigerator temperature. Generally speaking, the refrigerator temperature of 4- 10 degrees is normal. Please note that the bigger the thermostat, the lower the temperature, the bigger the summer and the smaller the winter. In addition, the refrigerator door is often opened, and there are many items in the refrigerator, which leads to no refrigeration or unsatisfactory refrigeration effect.
4. the reason why the refrigerator freezer is not cooled may also be that there is a problem with the refrigerator compressor. The compressor can be started. Remove the return air duct, block the outlet with your fingers and check the pressure.
If the compressor is too low, the compressor will have problems. The compressor can't start. Check whether the refrigerator is plugged in.
If your refrigerator is cold, check whether the fan is running. Open the refrigerator door, press and hold the button on the edge of the box mouth by hand (control indoor lighting, stop the fan when opening the door), and check whether the fan works. If the fan doesn't work, the refrigerator won't cool. In addition, excessive food will also affect the cooling effect.
6. Open the refrigerator door and see if the light in the box is on, so as to determine whether the power supply of the refrigerator is connected. If the light is not on, use a pen or multimeter to check whether there is electricity in the power socket. Connect the power plug of the refrigerator.
7. The reason why the refrigerator freezer does not cool may also be that the high-pressure output buffer tube in the compressor is broken, or the screw of the fixed tube is loose, resulting in that the high-pressure tube does not exhaust and the low-pressure tube does not inhale, so the compressor runs, but does not cool.
8. Use a multimeter to check whether the power supply voltage is lower than 187V, because the refrigerator compressor below 187V cannot be started normally according to the national standard.
9. When the ambient temperature is lower than the normal starting temperature of the temperature controller, check whether the low temperature switch of the refrigerator is turned on. Only by turning on the low temperature switch can the thermostat be forced to start.
10, if the compressor works, judge whether there is refrigerant (usually called liquid medicine) in the refrigeration system. After a few minutes, let the refrigerator unplug and listen carefully to see if there is liquid flowing in the copper tube. If not, it means that the refrigerant in the system leaks or the compressor loses its working ability.
Second, the reason why the refrigerator freezer in Midea does not cool.
1. The power supply is not connected. At ordinary times, the power supply of our household refrigerators is usually connected, but sometimes some accidents may happen, such as poor plug contact and the refrigerator can't cool. So, when your refrigerator is not cold, you can check whether the light in the refrigerator is always on to make sure whether the power of the refrigerator is connected.
There are many things in the refrigerator. If you put a lot of things in the refrigerator, but the temperature of the refrigerator can't reach, the refrigerator may not cool. At this point, we can reduce the temperature of the refrigerator. However, it should be noted that the more refrigerators have thermostats, the lower the temperature.
3. If the fan doesn't work and the refrigerator fan doesn't work, the air conditioner can't enter the refrigerator, so the refrigerator won't cool at this time. So you can see if the fan in the refrigerator can work normally. If it is broken, remember to replace it in time. In fact, the fan doesn't work, which is one of the reasons why the refrigerator doesn't cool!