Question: What wires go where on my thermostat?

Most thermostats have a Red wire that is the power wire that usually connects to R & RC terminals of the thermostat, a Green wire that energizes the Fan relay, connected to the “G” terminal on the thermostat, a Yellow wire that energizes the outdoor units contactor, (if you have air conditioning) and a white wire that

What are the wires on my thermostat?

Here is the industry standard thermostat wire color code used for most systems:White. The white wire connects to your heat.Yellow. The yellow wire connects to your compressor.Green. The green wire connects to the fan.Orange. This wire connects to your heat pump (if applicable).Red (C). Red (H). Blue.

What do the different color wires mean on a thermostat?

Blue or Black – C – Common wire, may be unused by your existing thermostat. Enables continuous power flow from the Red wire. Red – R – 24VAC power from the furnaces transformer. Red – Rc – 24VAC (dedicated to heat call) Red – Rc – 24VAC (dedicated to cooling call)

Where does RC wire go on nest?

Note: If you have an R, Rc or Rh wire, you can put it into the R connector on the Nest Thermostat. If you have a W2, Y2 or O/B wire, you can put it into the *O/B connector, if needed.

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