a/c /common element drain

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Has anyone else experienced this issue: once again, my a/c shut off. I had ECM out on 5/31 and the tech said the common element drain not draining - I am on ground level/corner. The a/c unit totally replace 2 yrs ago. Did not experience issues initially but much too often of late - ECM told me it was prop mgr issue since it's the common element drain ---so, two shut offs ago/ prop mgr comes out - says there was very little in the drain - all ok. And of course, it always happens on the wkend ----I am caring for my 88 yr old mother who is basically in a wheelchair and I depend on the CV busses for my transport so it's not easy around here and this constant a/c issue has now flipped me over the edge ---Has anyone else had the same prob w/common element drain or know of anyone who has? of course, the tech says these bldgs are 40 yrs old etc but none of my assn neighbors are battling this prob----any input appreciated. Thank God it's only 80 in here now and I have ceiling fans -----once again thank you anyone and everyone with input.
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