Check out the rubber ring ( or called door seal) to see if there is black mold build up inside the bottom rubble. # X, `5 @! f" W6 j# T8 g$ d( y3 h. } g( {" Q8 c* X+ T2 H( ]3 ^0 ^
If 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.