Heater Thermostat Wiring Color Code

Lack of standards makes this interesting.

Heater thermostat wiring color code.

Each wire connects to a different terminal and is responsible for a different function. The white wire connects to your heat. Below is an industry standard thermostat wire color code complete with each wire s function. The thermostat controls gas heater and separate a c unit so i believe c is wired at the fan relay.

The thermostat wiring color code guide from wi fi thermostat reviews. There are a variety of thermostat wire types. Your best bet is to see the manufacturer s documentation both thermostat and hvac. Color codes for 24v thermostat wires are divided into two groups.

Thermostat signals and color code. Understanding thermostat wiring colors is the next step. References for 4 wire thermostat wiring color code. Tuned the targeting for 4 wire thermostat wiring color code removed ad code and added tags.

To install your unit you ll need to connect the correct wires to the terminals on the back of your new thermostat. The main difference setting each apart is the number of colored wires. How to wire a thermostat. The yellow wire connects to your.

Thermostat wiring and wire color chart thermostat wiring colors code. While there isn t an official standard for thermostat circuit wiring colors there is a general pattern. We give a summary tables of both traditional and current thermostat wire color code keys above the 5 universal base colors for thermostat wires which are in order of frequency of use red white green yellow and black. R the r terminal is the power.

Color of wire and termination. Types of thermostat wire. Hvac systems with more functions need more wires to communicate to and from the thermostat. It is a red wire and comes from the transformer usually located in the air handler for split systems but you may find the transformer in the condensing unit.

The 5 strands of wire provide enough functions for the modern. Here is the industry standard thermostat wire color code used for most systems. G and w which are connected to r rc g and w on the thermostat. To install a new thermostat or repair an existing device you ll need to understand the different colors of wires.