2 Stage Heat 1 Stage Cool Thermostat Wiring Diagram. Most bigger heat pump manufacturers like trane goodman lennox and so on have the orange wire that. The y2 wire 2nd stage cooling is optional if available.
One trick that we use is to print out the same wiring diagram off twice. The wiring diagram for the copeland scroll two stage compressor. This image given above is of a thermostat that supports 2 stage systems 2h2c 2 stages of heatingw1 w2 cooling y1 y2 in a single thermostat.
Install and.
2 1 2 furnace rrc. Additional articles on this site concerning thermostats and wiring can help you solve your problem or correctly wire a new thermostat. If labels do not match letters on the thermostat check the chart at. But this thermostat is actually wired as 1h1c system as there.