First, check whether the refrigerator has a low temperature compensation switch. Turn on the low temperature compensation switch when the indoor ambient temperature is lower than 16 degrees, and turn off the switch when the indoor ambient temperature is higher than 16 degrees. Otherwise, when the indoor environment temperature rises, the refrigerator will run for too long, resulting in non-stop. After working for a long time, the cold storage room will frost too much, so it is necessary to adjust the low temperature compensation switch.

Secondly, see if the door sealing strip of the refrigerator freezer is in good condition. If the seal of the sealing strip is broken, the cold air in the refrigerator will easily leak out. In addition, when the temperature sensor inside the refrigerator senses that the temperature can't reach the required temperature of the object, the compressor starts to operate, and the freezing chamber of the refrigerator will frost too much after a long time of operation. You can do a test at home. Turn on the flashlight in the freezer at night, then close the door of the refrigerator, and finally turn off all the lights at home. If you can see the light source by the refrigerator door, it proves that there is something wrong with the refrigerator sealing strip.

Check again whether the water outlet hole at the bottom of the inner wall of the refrigerator freezer is blocked by foreign objects. After the outside temperature rises, the temperature difference between the inside and outside of the refrigerator increases. If you open the door often, the frost on the inner wall of the refrigerator will turn into water. If it can't be discharged from the water outlet in time, it will cause the frost to thicken, which can be handled by the through-hole pin that comes with the refrigerator.

If the above can't be solved, it may be caused by moisture in the insulation layer. Only by replacing the insulation layer can it be solved. I hope my answer can help you!