I just bought a house and it had a Rheem Prestige Contour furnace/AC installed in the basement, dated 2005. It also had a humidifier installed on the air return duct, but the water valve to it is corroded shut so I have it turned off. I wonder if anyone could help me out with a few quick questions:
1. The AC is installed on top of the furnace and occasionally a small amount of water leaks out from the front of the join between the furnace and AC. Is that a problem? There is already a separate pvc pipe leading to a drain.
2. I can feel air blowing out of the seem between the AC and furnace, should I try and tape that seem up?
3. There is a number "6" flashing on the LED display through the bottom window of the furnace. Any idea what that could mean?