So I went out of town for 2 weeks, my house would be empty the whole time so I just set the A/C to 80 and the heat to 55 (thermostat is usually on auto changeover) while I was gone. I changed the Temps back to the normal schedule a couple of hours before I got home. Ever since I got home, I've noticed that while it still heats and cools seemingly normal; after it reaches whatever set temp, the fan keeps running for an abnormally long time. It doesn't exceed the set temperature, but it just seems like the fan keeps running. I tried leaving the system off yesterday and switched to heat (instead of auto changeover) last night, but it's still doing the same things. I've verified that the fan is set to auto, and the filter was changed a few weeks ago. The system worked normally before I left. No one was in my home to mess with it while I was gone, and there weren't any power outages or anything while i was gone. I figured I'd ask on here to see if there's a simple fix before I call my technician. For what it's worth, I've been home for 2.5 days and the outside temperature is roughly the same Temps we were having before we left.