I'm going to do some investigating and see what I can come up with. Thanks for the replies!

The outside unit kicks on but the inside fan/blower doesn't kick on. I have 4 wires connected to the t-stat. I have yellow to Y, green to G, red to RC, and white to W. Those are the only 4 hooked up. I hooked it up exactly how the other stat was hooked up.

Hello, I have an Intertherm FEH-015HA where the HEAT works perfectly when t-stat set to auto and fan/blower set to auto. However, the A/C will only kick on and stay on when the fan/blower is set to the ON position. I've read multiple posts about the opposite problem where the A/C works and it's the ...