I have a White-Rodgers 1F56W-444 ac/heat thermostat. I want to replace it with a Honeywell RTH110B thermostat.
When I remove the old thermostat, the wires are connected from the wall to the thermostat as follows:
R -> Rc
G -> G
W -> W
B -> Y
Y -> A
What is "A"? The new thermostat does not have an "A". It has Rc, Rh, W, Y, G.
If the yellow connects to the Rh, do I need to remove the jumper between Rc and Rh?
Help?
Thanks.