Simple Thermostat Wiring Diagram

Wiring a thermostat is a simple step by step process that anyone can do. Yellow the yellow wire connects to your compressor. Once you know what type of system you have the hardest part is out of the way.

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Most of the process is about following safety procedures and avoiding common mistakes.

Simple thermostat wiring diagram. Green the green wire connects to the fan. The thermostat controls the operation of the heater compressor and blower as shown in figure 1. Red now there can be two separate wires for this. The diagram below shows how a basic 4 wire thermostat is connected as indicated by the color code chart above.

Rc wire connects to the rc terminal. Thermostat terminal designations quick guide detail wiring color guide below. If you have a two stage heat pump then you will also utilize terminal y2 for the second stage. White the white wire is what connects to the auxiliary heat on your system.

The basic heat a c system thermostat typically utilizes only 5 terminals. Figure 1 is a circuit diagram showing the simplest possible known thermostat control system for heating and cooling operation of an a c and furnace or a c and electric heat system. It is better to take a good up close photo of the old thermostat and what terminals the colored wiring are terminated. By the use of an adjustable set point the job of the thermostat is to turn on either the heating or cooling system to maintain the desired room temperature in the home and to turn off the system when the desired temperature is achieved.

Orange this wire connects to your heat pump if you have one. Rc red wire power 24 vac rh or 4 red wire jumpered power 24 vac. Red wire connects to the r terminal. Furthermore this thermostat wiring diagram is specifically for a system with two transformers.

That is a basic honeywell thermostat wiring diagram for a single stage heat pump. Your system likely only has one transformer as most typical residential systems only use a single transformer for control. Y wire connects to the y terminal and is for cooling stage 1. Rh wire connects to rh terminal.

Basic thermostat wiring colors air conditioner systems always remember when changing a thermostat for a new thermostat to take a photo of the colors and where they go on the old thermostat or get a pencil and paper and write it down. The thermostat is the control device that provides a simple user interface with the internal workings of your homes climate control system. Y2 wire connects to y2 terminal and is for cooling stage 2. For this system you will notice that g air handler.