Troubleshooting Guide

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C Wire Addendum

Customer Support

1-855 -733-5 4 65

Important! This thermostat requires a C, or common, wire for power.

If you are replacing an existing thermostat, it might not have a C wire connected to it.

If you don’t see a C wire, try one of these two options to power your new thermostat. Please

contact Customer Support at 18557335465 for assistance at any time during this process.

Before beginning these steps, turn OFF power to your heating/cooling system.

Option A: Finding the C wire

1 There might be an extra wire pushed into the wall or wrapped

around the wire bundle. Gently pull the wire bundle out of the

wall to check for unused wires.

2 If you have an unused wire, connect that wire to the C terminal

on your new thermostat.

3 Connect the other end of the C wire to the C terminal on your

heating/cooling system (or the zone panel if your home uses

more than one thermostat to control heat and cool). Be sure

the other wire(s) connected to the C terminal stay securely

connected when you re-tighten the C terminal.

Note: Not all heating/cooling equipment use the C label for the 24 VAC common wire. If your

heating/cooling equipment does not have a C terminal, check the system manual or contact

the manufacturer to find out which terminal is the 24 VAC common.

4 Complete the installation following the steps in the instruction manual or quick start guide.

Option B: Using the G wire

If there is no unused wire in the wall, check the table below to see if you can use the G wire to

power the thermostat. If you can’t use the G wire, contact Customer Support.

Note: Using the G wire in this manner means you can’t run your system fan continuously. It will

run when the system is heating or cooling.

Heating/Cooling System

Furnace that burns gas or propane Use G wire

Furnace that burns oil Call Customer Support at 18557335465

Heat pump WITHOUT backup (auxiliary) heat Use G wire

Heat pump WITH backup (auxiliary) heat Call Customer Support at 18557335465

Zoned system (more than one thermostat

controlling the heating/cooling system)

Call Zoning Support at 18008288367

System with a whole-house humidifier,

dehumidifier, or ventilator

Call Customer Support at 18557335465

M36727

Summary of content (8 pages)

PAGE 1
Customer Support 1-855-733-5465 C Wire Addendum Important! This thermostat requires a C, or common, wire for power. If you are replacing an existing thermostat, it might not have a C wire connected to it. If you don’t see a C wire, try one of these two options to power your new thermostat. Please contact Customer Support at 1-855-733-5465 for assistance at any time during this process. Before beginning these steps, turn OFF power to your heating/cooling system.
PAGE 2
Important! Using the G wire assumes there are wires at the thermostat connected to G, Y and C on your equipment. If this is not the case, please contact Customer Support. 1 Open the heating/cooling equipment that connects to your thermostat. 2 Find the wiring terminals G, Y, C on the furnace or airhandler control board. ON ON M36728 3 Unscrew the G terminal and move that wire to the C terminal.
PAGE 3
Service à la clientèle 1 855 733-5465 Addendum du fil C Important! Ce thermostat nécessite un fil C, ou neutre, pour l’alimentation électrique de 24 VCA. Si vous remplacez un thermostat existant, celui-ci pourrait ne pas être relié à un fil C. Si vous ne voyez pas de fil C, essayez les étapes suivantes pour alimenter votre nouveau thermostat. Veuillez communiquer avec le service à la clientèle au 1 855 733-5465 pour de l’assistance en tout temps durant le processus.
PAGE 4
Important! L’utilisation du fil G présume qu’il y a des fils du thermostat connectés aux bornes G, Y et C de votre appareil. Si ce n’est pas le cas, veuillez communiquer avec le service à la clientèle. 1 Ouvrez l’appareil de climatisation ou de chauffage qui est relié à votre thermostat. 2 Trouvez les bornes G, Y, et C sur la plaquette de circuit électronique. ON ON M36728 3 Dévissez la borne G et déplacez le fil à la borne C.
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Atención al cliente 1 855 733 5465 Anexo del cable C ¡Importante! Este termostato requiere un cable de alimentación C o común. Si está reemplazando un termostato previo, tal vez no haya un cable C conectado a aquel. Si no encuentra el cable C, pruebe con estos pasos para conectar su nuevo termostato. Contáctese con Atención al Cliente al 1-855-733-5465 para recibir asistencia en cualquier momento durante el proceso.
PAGE 6
¡Importante! Al usar el cable G se asumirá que, en el equipo, hay cables en el termostato conectados a G, Y y C. Si este no es el caso, comuníquese con Atención al cliente. 1 Abra el equipo de calefacción y refrigeración que se conecta con su termostato. 2 Encuentre los terminales de cableado G, Y, y C en el panel de control de la caldera o climatizador. ON ON M36728 3 Desatornille los tornillos del terminal G y cambie ese cable al terminal C.
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