Termostat wiring (4 wires with orange??)
After researching, it seems the normal color coding for a 4 wire system is R,G,Y,W... I don't have a white wire, appears to be orange instead! I have a Hunter 44110 that is replacing an old thermostat. The new unit had the folowing terminals: Rc/Rh (jumpered), G, Y, W,... So i hooked the wires up accordingly and hooking the orange to W (assuming they used orange wire instead of white)... turned the unit on and adjusted the temp on the thermostat. A/C seemed to kick in normally, but all that came out of the vents was warm air. I even waited a few minutes thinking it was just the residual warm air in the ducts. Any ideas of what went wrong??