Check out the rubber ring ( or called door seal) to see if there is black mold build up inside the bottom rubble./ j4 z+ W0 h1 f" j2 p1 |; K; F! O( b
1 a8 a1 l; T$ E. I9 ~+ lIf 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.