I looked up at the ceiling on my second floor the other day and noticed it was wet. :( The condensate line clogged last year so I kind of know what to expect. I should also say, I'm coming around to the fact that I'm going to need to replace this entire system soon. It didn't hold pressure when I had a company out to inspect it several years ago, I don't know how it's held out this long. I'm deciding between just replacing the condenser (where I assume the leaks are, but it's r22) or the entire system (but I'm dreading the air handler/attic portion of the job). I'm going to at least start to handle the problem tomorrow. I bought a drain clearing gun this time (it sucked last year trying to figure out how to snake the 3/4" pvc with sharp 90s) and tablets that should deal prevent/deal with the scum buildup over the next several months. I'm start this thread off of memory because I want to have game plan going up there. Crawling around my attic to deal with this sucks, no room to stand up, crawling around in fiberglass, no room to stand, it's hot. I attached a picture of the air handler that I took several years ago when I renovating the system (and installing attic insulation). Unfortunately, I can't find the model number, I'm going to get it tomorrow. Anyway, 1. Inside of the air handler there is no real drip pan. It's lined in fiberglass that's saturated with water and then sort of drains out of the PVC (but the fiberglass stays saturated), is that normal? 2. Since the air handler draws air in (and all openings need to be taped so as not to suck in attic air/dust)...does that mean that air currently gets sucked in from the outside through the drain line? 3. I'm considering adding a full drip pan underneath the unit. Since it doesn't seem to be designed for it, would it be worth it? 4. Last year I installed a condensate overflow switch, so I didn't think I would have this issue again (at least not without the A/C shutting off), but clearly something isn't working properly (again, I'm going to investigate tomorrow). 5. If I replace the entire system, is replacing the attic unit going to be be as bad as I fear? I want to tell the HVAC company we would hire that I would handle the attic portion of the job to 1. keep costs in check and 2. because I don't trust anyone else to minimize damage/repairs/insulation work/etc. and not be tracking crap through my house. I would invest in HVAC press or crimp jaws for the copper portion of the job. Thank you

I just want to set the temperature and be done with it. While in "Cool" mode it resets to some high temperature (higher than the outside) and doesn't let me delete these "Hold" or "Schedule" settings.