When our house was built they tied the condensate pipe into the main plumbing pipe behind the sink in the bathroom below that drain and we have had issues with it more times than I can count. The pipe gets clogged I guess and spills over into the attic. It runs down the inside of the wall and we don't even realize it's happening till we see the leak in the ceiling. Usually the A/C people just blow it out, but today the technician said we need to call a plumber and have him cap off something so it will drain where it's supposed to. Is this something we can do, if so can someone explain to me what's going on? Also if it feeds into my pipe, why would it back up, when the sink seems to be draining fine? If I call a plumber will they know what I'm talking about? Are they going to have to cut into the wall to do that? Thanks in advance!

I have a Trane 4WCY4036B package unit, the issue is that the blower motor is not running. Upon inspection is see the fan oscillating back and forth, but not running. I have inspected the ecm unfortunately the thermistor is fine. I am leaning toward replacing the ecm but that leaves me worried that the issue could be the motor itself, then I am out $400 on the ecm. I have ohm'ed out the motor, what concerns me is that I see a drop in resistance on one of the windings, if they were all equal I would have already bought a new ecm. The readings I am getting are two of the windings are about 8.7ohms and one is only 3.4. Some of the things I read about testing 3-phase motors say that there should not be a greater than 10% change in resistance readings between the different phases. Any thoughts on this would be greatly appreciated. I am also considering changing to a psc motor, if anyone has done a switch on one of these units and can give some detailed advice, please let me know, it would be much appreciated. Also, with regards to just replacing the ecm, what is the best place to buy? Thanks in advance