How to judge whether the refrigerator is a machine failure?

How does the freezer judge that the inspection is a machine failure?
How to conduct self-assessment before sending cold ghosts for maintenance? Before maintaining the service, you can check the following points yourself: the following points are not machine failures, which are normal during operation.
1. The compressor is very hot: when the cabinet is running, the temperature of the compressor housing can reach up to 90 degrees Celsius.
2, the heat of the condenser, when the freezer is running, the average temperature of the radiator condenser is about 55 degrees Celsius.
I heard the sound of running water in the freezer, which is the sound of refrigerant flowing.
3. Frost in the refrigerator: because the cooling pipe of the refrigerator is close to the back of the refrigerator, the temperature is lower than zero degrees Celsius at startup. When the refrigerator freezes again, frost after automatic removal
4 when the refrigerator is in the state of automatic defrosting, the temperature in the box will increase slightly, and the cooling will recover after defrosting. If the freezer has the following reasons, we must analyze carefully: if necessary, you should contact the manufacturer:
first, the freezer does not cool
first check whether the display screen shows the temperature. If not displayed, the machine is not turned on. Confirm that the power socket and plug are not loose. If there is no relaxation, please check whether the machine fuse is blown. If there are not two failures, you should contact the factory for sales at this time.
Second, the refrigeration effect of the freezer is not good.
If the temperature displayed is out of this range, first check if there is too much dust in the condenser. If there is too much dust, please clean the condenser surface. If you are looking at the commercial freezer in the sun, please put it in a cool, ventilated place. Then check whether there is debris blocking the air inlet or outlet. Remove debris. Three, freezer leakage
regardless of whether the refrigerator is placed in a humid environment, when the refrigerator works in a humid environment for a long time, the insulation of electrical components will be reduced. Place the refrigerator in a dry and ventilated place. If there is an obvious electric shock, disconnect the power cord immediately. Then check whether the power grounding wire and the fire wire are in contact. If the problem still cannot be solved, please contact the factory for sales.
fourth, the noise of the machine is very loud.
first check whether there is noise caused by soft materials and blade winding. If so, please clean yourself to see if the noise can be eliminated. If it is not such a voice, it is obviously a blow and shock. Please contact the factory for sales.

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