Check out the rubber ring ( or called door seal) to see if there is black mold build up inside the bottom rubble. 1 C1 m8 L* L0 ?. h. C3 G, N9 b4 I: h0 ~8 I6 j2 y
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.