I live in a 2 story house with an AC system for each floor, the first floor AC works fine but the problem is with the second floor system. The thermostat ranges between 85-95 degrees (set at 70) and when the AC tries to kick in hot air is blown. From what I can tell it seems like it's the condenser outside (for the second floor) that has the problem. The condenser is a Luxaire EABD-F030SB

My son bought a condo last winter. During the winter, the gas furnace worked very well and the air handler blower motor came on when heat was called for and shut off when the desired temperature was reached. Now that there have been a few warm days, when the system is put in the AC mode, it pumps out plenty of cold air, the blower motor on the air handler comes on but will not shut off even after the condo reaches the temp set on the thermostat. Thermostat Fan setting is set to AUTO mode, not ON. The system is a Carrier 58STA070 gas furnace with the air handler blower and a Honeywell RTH111 thermostat. Sorry, I don't have the info on the exterior AC compressor unit or the interior AC coils mounted above the furnace, but I think they are Bryant. Thermostat is a pretty bare bones model and is set to Cool and the blower is set to AUTO. Any thoughts on what wiring or other items I should check that might cause this air handler blower to continually run when the AC is on? Just FYI, I am about 45 minutes from my son's condo, so I won't be able to check any wire colors or connections until I go down tomorrow, so any suggestions (which are greatly appreciated) will have to wait until tomorrow to see if they resolve the issue. Thanks for any input.