A few days ago, the furnace blower (fan) stopped working while my AC was on. Fortunately, my compressor didn't go bad.
I opened the connections inside the t'stat to make sure they were fine - they were fine.
I then opened the furnace back - realized there is a trip switch - tried turning it on - all I heard was a loud hum. The hum is really fairly loud (not loud enough to hurt the ears, but loud enough that you can hear it upstairs in the room above the t'stat).
I figured it was the capacitor, so I ordered a new one. When the new one came in, I attached it. It WORKED... for a minute... then, the same thing, the fan stopped, and all I could hear was the hum.
Please help if you can.