Just take a look at the picture below the diagram. Youll probably see a thermostat jumper wire connecting the rc and rh terminals.
Single Stage Vs Multi Stage Heating Cooling Systems Which
Honeywell thermostat wiring diagram 4 wire. However your connections may seem a little different on the thermostat itself. The table above provides a more complete list of honeywell thermostat wiring colors and their uses. Its there so you can supply power to the heating and cooling switches with a single wire which is usually red. The red wire or 24 vac power lead is connected straight to the rc 4 terminals. We have both a natural gas furnace and an ac unit. Heat pumps are different than air conditioners because a heat pump uses the process of refrigeration to heat and coolwhile an air conditioner uses the process of refrigeration to only cool the central air conditioner will usually be paired with a gas furnace an electric furnace or some other method of heating.
4 wire or 5 wire thermostat wiring problem question. Substitute g wire for c wire install the honeywell wi fi smart thermostat with this video. The model number of the honeywell thermostat was not provided however here are the typical wiring assignments for a conventional heating system. C 24 vac common you might see blue purple or brown typically used for this wire. Inspirational honeywell thermostat wiring diagram for rth 3 4 5 wire a beginner s overview of circuit diagrams a first appearance at a circuit representation may be complex however if you can review a train map you can check out schematics. But here is a list of the most common wire color mappings as seen in many four wire t stat setups.
Keep in mind that there should be a low voltage cable in the wall where the thermostat is located which has individual wires as shown in the instructions below. There are only four wires going into the existing thermostat red green blue white. Thermostat wiring diagrams for heat pumps heat pump thermostat wire diagrams. Typical 4 wire thermostat t stat wiring examples follow. We have a 19 year old condo with an old carrier mercury thermostat. Nest wiring diagram 4 wires duration.
Both examples of how to wire a honeywell thermostat with 4 wires are discussed below. How to wire a honeywell thermostat with 4 wires. Honeywell thermostat wiring diagram 4 wire examples. Some have the common c wire while others do not. The wiring for your honeywell thermostat depends on the functions of your heating and cooling system. Y yellow wire for cooling enable g green wire controls fan on auto the diagram shows how the wiring works.
How to replace a 4 wire thermostat.
Gallery of Honeywell Thermostat Wiring Diagram 4 Wire
