Outrageous Heat Pump Wiring Color Code
Power 24 vac transformer.
Heat pump wiring color code. Industry standard for geothermal heat pumps. Secondary cool call relay. Blue or c wires.
The color of wire r is usually red and c is black. 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. Power from cooling 24 vac transformer.
Thermostat wiring and wire color chart thermostat wiring colors code. C is known as the common terminal. Primary cool call relay.
Wire color code description. Change over relay to cool relay. Power from heat 24 vac transformer.
Primary heat cell relay. Heat pump thermostat wiring a typical wire color and terminal diagram as shown in the diagram you will need to power up the thermostat and the 24v ac power is connected to the r and c terminals. Industry standard for geothermal heat pumps.
Color codes for 24v thermostat wires are divided into two groups. Red or rc wires. R the r terminal is the power.