About chest freezer,if you just close the door,it is difficult to open it again for a few minutes (about 90 seconds).There are two kinds of situations,
1、This is normal.It means the door seal is normal and the freezer is working well.
When we open-close the door, the hot air enters into the freezer and it becomes cold.The inner pressure is lower than outer, so when we open the door again,it is difficult.
Please wait a few minutes,when the pressure is in balance,we will open the door easily.
2、The door seal and body have different degree of adhesion。
If you apply some talcum powder or playing on a layer of wax in the place of cabinet and the door seal，it would be much better.