What is the reason for the accumulation of water inside the refrigerator? How to deal with it?

When the compressor is working, the rear wall of the refrigerator compartment will be frosted or attached to ice beads. After the compressor stops working, the frost or ice beads on the rear wall of the refrigerator compartment will melt into water and drain into the water collector on the rear wall of the refrigerator compartment through the through-hole pin (drain hole) on the rear wall of the refrigerator compartment. If the through-hole pin (drain hole) is blocked, it will cause water accumulation in the lower part of the drawer of the refrigerator. At this time, measures need to be taken to clear the drain hole.
Treatment measures:
1. First, adjust the adjustable feet under the bottom of the refrigerator, so that the refrigerator is slightly tilted back about 5 degree.
2. The refrigerated shelf cannot be close to the inner wall, so that the accumulated water can drain along the inner wall.
3. Check whether the drain hole (the middle and lower part of the inner wall of the refrigerator compartment) is blocked (by ice and dirt).If it is blocked by ice, pour warm water from the drain hole to dredge; if it is blocked by dirt, use a thin iron wire to dredge.
4. After dredging, you can use about 100ml of warm salt water to introduce into the drain hole to clean the drain hole and confirm whether the drain hole is well cleared
5. Minimize the number of opening and closing the door and the time to open the door each time.