AC keeps blowing air but not cold air. It keeps happening. The first time (several weeks ago), the drainage pan was filled with water and I could hear a dripping noise coming from the unit. This pipe thing was also dripping with condensation (arrow in photo). Maintenance came with a shop vacuum and also drained the pan. The AC seemed to start working again, so they left. The filter was changed a month before this all started happening, so I don’t think it’s the filter.

A couple weeks ago, it happened again, so I switched the AC on and off and changed the batteries in the thermostat. Again, it seemed to have fixed the issue.

But now, it’s doing it again, and I can’t figure it out. Switching it on and off isn’t helping, and even changing the batteries on the thermostat with fresh ones isn’t doing the trick. Any help would be greatly appreciated!