All right everyone this one has stumped me. About a month ago I changed out my White Rodgers 1F58-72 thermostat to a Honeywell RTH7500. I thought I had everything hooked up correctly, until I decided to turn on the A/C (previously I've been using the heat). Well it seams to only be blowing out hot air (not matter what I do), no cold air is coming out... yes I do have it set to cool :).

It's a 2 stage heat and 1 stage cool, all electric. Here is how I have it wired from old White-Rodgers to the new Honeywell.

White-Rodger (1f58-72) Honeywell RTH7500

G ---------------------------------- G
Y ---------------------------------- Y
O ---------------------------------- O/B
R ---------------------------------- R
W2 -------------------------------- W2
X1 --------------------------------- C

Thank you all,
CJ

Was the installer setup set so that the revercing valve kicks in on heat or cool?

I'm sorry, I don't understand your question. I don't have much experience with AC units.