Hi, I bought a Honeywell RTH 2300 thermostat and I'm trying to hook it up, the wires I have coming out of the wall are white, green, red, yellow and blue. I hooked up the matching colors to the W, G, R, Y and the blue wire I attached to the O/B. I have the jumpers set as follows: jumper 1 HG and jumper 2 B. There is no hot air coming out when I put the heat on, it just blows out cool air. Am I doing something wrong?