Hello friends, I have the Freezer of the house that does not freeze the entire wall to the bottom just a little above and I notice that the discharge tube is slightly warm, this begins to happen when it has been running for a while, I have been told that it may have moisture if it were as well as I can solve it in advance thank you very much

The humidity you notice is inside the freezer, isn't it? and so you say lack of refrigerant. check the pressure with a pressure gauge.