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So the number 2 appears for half a second, and then dissappear for half a second. This process repeats itself, and is what I am calling "flashing." Maybe 'blinking' is a better term?
"2" from the SPAN display... right above the "cool" on the display. If you hold the up and down together for three seconds, it gives you the option to adjust between 1 and 3, 2 being the ideal. I can change it to 1, 2 or 3, they still blink, and AC won't come on (there is Def power going to the blower, and the AC unit.
I took the wires out, made sure there was a good connection, took out the batteries, put in brand new ones (waited 20 minuets for any capacitors to power down), and put the face plate back on carefully, and presto, still blinks (although it blinked 4, but as soon as I set the span, it went back to blinking 2), everything else stayed the same, not blinking
Chadd, it sounds like you have a defective thermostat. Do you know how old this unit is? Lets try one other thing. On page 4 of this manual:
It talks about pressing a reset key. Let's try that before going any further.
I did that long before I talked to you. I will try a new thermostat, but I wonder if it's the wire leading to he unit. That is outside, and there is a tree growing near by, could roots have done this?
Flashing 2 for "span"