I have a 10 yr old t-stat I want to repl. w/ a Globe t-stat model 59005. On the existing stat, the wires used are pink connected to X, Red to R of course, white to W2, green wire to G, orange to O, yellow to Y, and a black jumper wire from E to W2. The instruction book has several wiring diagrams, but nothing to show for the jumper wire from E to W2, and the pink wire going to X, nothing about E or X. Is there anyone that may be able to help me? I really appreciate any and all the help I can get. Thannks, because

Are you sure the globe 59005 is for a heatpump?

After doing more research, I found that this is a cheap T-stat and I need to find a better quility one.\
Thank you for the reply,
Because