Honeywell Thermostat Wiring Color Diagram. This is all a professional will do anyway no matter what its your time or your money. Nest wiring diagram 8 wire brilliant thermostat labs transpa png 409339 free on nicepng.
Rh wire connects to rh terminal rh heat. There is no colour coding in central heating wiring so we cannot recommend. Set the honeywell day programmable thermostat to your maximum comfort settings.
It doesn t control cooling and because it s a mechanical thermostat it doesn t need power for internal functions so it has no c wire.
The additional 5th wire will be for common. Do not label by wire color. Y compressor stage 1 cooling y2 compressor stage 2 cooling g fan. It shows actual uses for most commonly seen wire colors in.