I had this unit installed 11 months ago and it worked fine thru the winter of 2010-2011. When we turned in on last week it wouldn't fire. A technician came out and found a dried condesate pool (white rust) directly under the Intake Port in the Heat Compartment (not exchanger). A couple of the burner orfices were clogged with the same corrosion, and the track showed a trail up to the Intake Port. An Aprilaire humidifier is attached but didn't seem to be the cause of moisture/water entry in this area. Outside PVC pipes were checked, and they complied with the installation standards.
I would like to hear if any of you have experienced this problem, and what the source might be?
Thanks in advance.