Hi Onyx... I do have the red and white wires connected to the lux 1500 and to my coleman HVAC. All of the other colors are available but they are not connected. In the Lux 1500 the jumper is installed between the RH and RC terminals. The thermostat controls my heating fine but when I set my 7900-682...

Hello Bob: My system worked fine with an old 2 wire thermostat and the heater works fine with the new lux 1500 thermostat except the AC is not hooked up. I have all of the wire colors at the thermostat and at the Unit but the rest are not hooked up. My thermostat now has the red and white wire hooke...