Read that Learning was better for Heat Pumps we've got a new one of
those. We have an 12 year old Trane 4wcy4030 series that works like a
champ with the old thermostat. Also works great jumping the wires
(R,G,Y,O) blows cold (heat without the O). Hoo...
Bought and hooked up a nest to our American Standard heat
pump/thermostat. App says not compatible. It's a 24 volt system but
doesn't have/use a white wire. It's got a red, yellow, orange, purple
(ground), and blue - 5 wires. Have picture...
