I recently installed a Honeywell RTH230B thermostat, however the AC unit outside will not come on.

The thermostat has a color coded wiring scheme. RH, RC, W, Y, G. I have the RH & RC jumpered. RH/RC has a red wire, w=white, y=blue, g=green. I initially had the y=yellow, but the outside unit would not come on while the heat is running. This unit is a heat pump and it should be running while the heat is on. The outside unit is a Ducane. My unused wires are yellow and orange. Could someone please provide with the proper wiring scheme for my heatpump ac combo unit?

This unit is a heat pump and it should be running while the heat is on.

The thermostat you have will not work on two stage heating. It is designed for gas/oil/single stage electric only. Get a heat pump thermostat. Look in the manual that came with the thermostat.