Heater Thermostat Wiring Color Code

Lack of standards makes this interesting.

Heater thermostat wiring color code.

The main difference setting each apart is the number of colored wires. Thermostat wiring and wire color chart thermostat wiring colors code. Hvac systems with more functions need more wires to communicate to and from the thermostat. The white wire connects to your heat.

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. Your best bet is to see the manufacturer s documentation both thermostat and hvac. The thermostat wiring color code guide from wi fi thermostat reviews. To install a new thermostat or repair an existing device you ll need to understand the different colors of wires.

From the looks of your wiring and if they went by the normal wire color code of how heat pump wires should be wired then you should be able to get your thermostat wired correctly. The thermostat controls gas heater and separate a c unit so i believe c is wired at the fan relay. 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. Color codes for 24v thermostat wires are divided into two groups.

R the r terminal is the power. Each wire connects to a different terminal and is responsible for a different function. Tuned the targeting for 4 wire thermostat wiring color code removed ad code and added tags. G and w which are connected to r rc g and w on the thermostat.

Types of thermostat wire. The yellow wire connects to your. Tuned the targeting for honeywell thermostat wiring color code deleted ad scripts added more related posts links and added tags. Color of wire and termination.

Understanding thermostat wiring colors is the next step. Below is an industry standard thermostat wire color code complete with each wire s function. The most common is 18 5 5 strand 18 gauge. Thermostat signals and color code.

How to wire a thermostat. To install your unit you ll need to connect the correct wires to the terminals on the back of your new thermostat. References for 4 wire thermostat wiring color code. While there isn t an official standard for thermostat circuit wiring colors there is a general pattern.