My current home has a White Rodgers Thermostat, Model 1F82-261, installed to control the York Diamond 80 furnace and the air-conditioner.
With the cover off, the White-Rodgers Thermostat shows the following wiring.
Original Thermostat Wiring (4-wire version) that runs on batteries:
- W => white wire
- RH => red wire (tied to RC)
- B => n/c
- RC => red wire (tied to RH)
- C => n/c
- G => green wire
- O => n/c
- Y => blue wire
To learn more about the wiring of thermostats, I watched a handy YouTube video:
The color code for wires is as follows:
Thermostat Wiring
- W = Heating (white)
- Y = Cooling (yellow)
- G = Fan (green)
- Rc = 24V power for Cooling (red)
- Rh = 24V power for heating (red)
- C = Common (blue)
Furnace Wiring
- W = Heating (white)
- R = 24V power for heating
- Y/Y2 = Cooling (yellow)
- G = Fan (green)
- C = Common (blue)
Condenser Wiring
- R = 24V power (red)
- C = Common (blue)
To install the Ecobee smart thermostat, I will need to add the PTK converter to the York Diamond 80 furnace's control board (since the Common wire is missing):
Is replacing the White-Rodgers Thermostat worth all of the effort?
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