Check out the rubber ring ( or called door seal) to see if there is black mold build up inside the bottom rubble. 1 \; p. U3 _3 U6 x; [ X3 ?- i0 k/ z/ ~$ F/ L. E
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.