I replaced my Lux thermostat with Honeywell RTH6360D1002 sometime ago and the heating worked very well. Now I am trying to use the AC and it is not working.
I removed four wires from my old thermostat (Red, White, Green and Yellow) and connected them to the the new thermostat - Red to R; White to W; Green to G; Yellow to Y; however, the air conditioning is not coming on.
In addition, I also have a blue wire coming from my unit that is not connected anywhere.
Appreciate your help. Things are heating up and would love to get the a/c running.