Can anybody help me with my air cond.?

Question

i am trying to hook up a new thermostat on my air cond and heat and when i took off the old one the wires were not labeled and my old thermostat did not have any labeling i have a two wire system red and white the red one is hooked up to the yellow and the white one is hooke dup to the greyone that run to the fan i dont know which one to hook up to the ones on my Rh, Rc, w, y, g, i also have switch on the front of my blower that are air auto cont., and heat and cool. please help.

Answer 1

the red wire goes to rh with a jumper to rc and the white wire goes to w

Answer 2

Only two wires?  I may be wrong but that thermostat is set up for separate wires for heat and cool but in your case you switch that at the air handler. I have never seen one like that.

But it would seem to me other than jumping the Rc (red cool) and Rh (red heat) you will also need the jump the Y (cool) and W (heat) at the thermostat as well.  Unless the thermostat has a setting on the back for using only a two wire system.