For the refrigerator refrigeration system, the compressor temperature is too high and the compressor exhaust temperature is too high. One may be caused by insufficient refrigerant filling, and the other may be caused by too much air mixed in the refrigeration system pipeline.

It is suggested to find a way to measure the refrigerant pressure at a certain position in the refrigeration system or judge it according to the refrigeration effect of the refrigerator in different refrigeration system States.

The ideal treatment method is to discharge all the refrigerants in the system pipeline, vacuumize with a vacuum pump to maintain negative pressure, then weigh with an electronic scale and add a standard amount of new refrigerant.