Awesome T Stat Wire Colors
Types of thermostat wire.
T stat wire colors. There are a variety of thermostat wire types. Y2 wire connects to y2 terminal and is for cooling stage 2. Note that in our case we had to use the green wire for c as discussed below.
The blue brown or black wire the blue brown or black wire c connects the low side of the output of the furnace transformer. When taking into consideration your thermostat wiring colors the orange wire typically connects to the o terminal while the dark blue wire connects to the b terminal. Orange this wire connects to your heat pump if you have one.
The red wire is connected to terminals beginning with the letter r which include r rh and rc units depending upon how the thermostat is being used. The 5 strands of wire provide enough functions for the modern thermostat. Red wire connects to the r terminal.
Yellow the yellow wire connects to your compressor. A majority of brands use the orange wire for the reversing valve while a small percentage use the dark blue for it. This thermostat wire color code will help homeowners understand the anatomy of their thermostat.
Wire color code description. Well explained tutorial on wire color codes. The red wire r rc rh connects the high side of the output of the control transformer to the t stat.
Industry standard for geothermal heat pumps. The main difference setting each apart is the number of colored wires. The most common is 18 5 5 strand 18 gauge.