I've had an Ecobee3 for while. Really like the functionality and it generally works fine. One thing I noticed though is after the A/C stops running because it comes to the set temperature, the furnace blower will kick back on for around 5 seconds. I am not sure if the outside A/C unit kicks back on. I don't have another thermostat to try, but I guess getting a basic cheapo and seeing if it still happens is an option. I have to imagine it is the thermostat doing it though. Any ideas? Is this doing a lot of harm to my A/C and furnace?

I have a York model number n2ahd10a06a heat pump. My current wire connections are: W-grey B-blue G-green R-red X-black O-orange Y-yellow. My new thermostat calls for the new configuration of: G or F in terminal G, O in O terminal and B in B (black or blue?) terminal but never both (so which one do I use O or B and what to do with the other?), Y Y1 or 6 in Y terminal with a jumper wire to W1 terminal , R in R terminal, W2 W1 or W in W2 terminal, optional C X or B (black or blue?) in C terminal. Can anyone advise me on how my wires are supposed to be connected up? If I have to call a professional I will but I'd like to do this myself.