Check out the rubber ring ( or called door seal) to see if there is black mold build up inside the bottom rubble. . M+ }3 d6 x, |; Y$ y8 ^ 2 [( G+ s$ p. I9 B& F+ rIf it does have mold and can not be wipe out, then you have to change out the whole seal.. I bought a new seal and changed out few weeks ago.