Ecobee With Only 2 Wires

I currently have 2 wires coming from furnace. ecobee says: based on Wires thermostat only ecobee transformer extra Ecobee wiring wire pump thermostat soundbar

My heat-only system only has two or three wires connected to the

Ecobee4 wiring diagram

Ecobee zones doityourself

Ecobee only turns on if i manually do it. : ecobeeEcobee with 2-zones Ecobee3 + taco zvc404exp + c-wire = ??? — heating help: the wallWire taco ecobee3 google share.

Wiring ecobee ecobee4 diagram thermostat wire installing support pro bundle smarterFound these two wires, could it be for the humidifier? : r/ecobee Wiring ecobee furnace wire wires comments supported features may not need currently coming wondering anyWiring ecobee with 2 wires in y terminal : r/ecobee.