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Last Activity:02-16-2012 5:06 PM
Posted in thread: Trane XE90 LED Troubleshooting Codes on 12-05-2009 at 09:06 AM
I just had this. It was dirty filters. I replaced them. Very easy. My filters are directly
above the heating chamber, so it was getting too hot, and tripping the high limit switch (4
blinks is the "Op...