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On that thermostat there is an R and an RC wire connection, the R is the power wire for heat and RC is the power wire for cooling. If you connected the power wire (normally red in color) to the RC only the fan control and AC control will work, there has to be a jumper wire between the R and RC terminals (assuming there is only one control transformer) for both the heat and cool functions to work.
apparently who ever did the wiring installation did not use the Proper color coding when they did the install. Now you must trace the wiring to the appliance and wire accordingly.
You are on the right track, you can hook the same 4 wires to the new thermostat without the jumper you had on the old thermostat. The jumper wire that is on the new thermostat can stay with no problems. Just connect the wires to the same terminals on the new one and your good to go!
Hi,
It sounds like the t-stat is programmed for a heat pump or you have a heat pump and the t-stat is programmed for a regular furnace....
Check out the manuals in the tip and go into the installer setup to change the t-stat to the proper programming for your system..
you need to program the thermostat for the reversing valve "O" it will tell you how to do this in the manual. you will need to chang from "O" to "B" or "B" to "O" depending on how its set.
Yes, I believe that you will be fine. If the original wiring is correct then I have listed the basic wiring below. As always read the directions and make sure the wiring matches your system.
Red wire = Rh (24v power, should have an exsisting jumper to RC) White wire = W (heat mode) Yellow (or sometimes blue) wire = Y (A/C) Green wire = G (Indoor Fan)
What color wires went where?
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