I will try to be as helpful as I can but I kinda need more information perhaps even pictures. At the moment though I would recomend removing the condensate trap (usually a black cylinder or box with a pipe or hose leading into it) and clean out very well by bringing to a sink, partially filling with water, then shake really well and pour out gunk. Repeat 3 or 4 times. Once you replace the trap where it was removed from make sure all pipes and hoses are connected and that all hose clamps are tight and secure. Hope to hear back and see pictures so I can be more helpful