Check out the rubber ring ( or called door seal) to see if there is black mold build up inside the bottom rubble.# M% W. f( V' W4 ?2 M3 s k
2 y/ n# X' i& w* k( S2 tIf 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.