Tips When Replacing Thermostat’s Wiring Colors Replacing thermostat wirings is just one of the most common thermostat problems that most thermostat owners are encountering.
Without the aid of a technician or an expert, it could be a harrowing task, especially if you are not familiar with wirings.
But now, you can do something to fix basic thermostat problems like replacing wirings. That is what I am going to discuss in this short article.
Here are some hints that could help you whenever you encounter thermostat problems like simple replacement of wires:
Learn About common thermostat problems
First the r-terminal is known as the thermostat’s power button. R basically means red, there are red wires going to the said terminal. But please remember that the power is coming from the transformer, and it’s usually situated in the air handler or condensing unit. Since it supplies power, it’s good to turn off the power first before you start working on the thermostat to avoid developing more thermostat problems.
Know about Thermostat Problems
The RC terminal on the other hand is the power responsible for cooling. Some huge HVAC systems possesses two separate transformers; one for heat and the other is one is for cooling. In this case, the power that comes from the AC would go to the so-called thermostat terminal. The RC and RH terminal are both red-wired so when you encounter thermostat problems on this area, you know what to do.
The Y-terminal on the other hand is indicated by yellow color and it goes to compressor relay. Y2 is in blue wire and it’s the code for the second stage cooler. If in case you possess two compressors, both must work off the similar thermostat.
W-terminal is known as heating terminal and it is characterized by white color. This goes directly to the heating source, either boiler or furnace. W2 is designated for the second stage head and it is commonly brown in color. This is designed for gas furnaces that have high and low settings. The heat pump is using W2 for the purpose of auxiliary heat.
G is obviously symbolizing the green color and it goes through the indoor blower fan. So when you encounter thermostat problems in this area, you know which wire you should touch.
C stands for common and it doesn’t possess a specific color but black is commonly and widely used. For digital thermostats that use power, common wire is very important in order to fulfill the 24 volts circuit.
Moreover, the O and B stands for orange and blue that is used for heat pumps. The Ruud as well as Rheem are used for B-terminal for cooling reverse-valve. Whilst some manufacturers are using O terminal; Lennox, Amana, Heil, Trane and others are typically hooked up to O terminal.
E on the other side stands for emergency heating and it has no distinct or standard color. The same thing applies to S1 as well as S2 which has no specific color as well.
The next time you encounter thermostat problems specifically in terms of wirings, you sure know now what to do. But be careful too when fixing thermostat problems, if you think you can’t do it alone, ask help from an expert.
There are thermostat problems that can be fixed without the help of an expert provided that you are aware of the technical know-how because if not, you might just worsen the situation.thermostat problems
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