Check out the rubber ring ( or called door seal) to see if there is black mold build up inside the bottom rubble. ! s: d4 |, c* J6 R$ I: @0 l* H# ~; H4 @9 p/ r% M
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.