OK, let's try a different hex file. I just emailed it to you. The one I sent to you before had been untested, and I had messed with the serial a bit. I just commented out the new part, and changed it to 38.4kbps 8N1. I need to get that AC controller tested. I've been so busy this week! man oh man. Maybe I can do it this morning.
-Paul
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