Check out the rubber ring ( or called door seal) to see if there is black mold build up inside the bottom rubble.: l! _- t; @" g( _# N; c' t* }4 `
; Y( \ I$ b9 ]+ ^3 M! @6 p3 e- IIf 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.