Honeywell Home T3 Pro - User Manual

Package Includes:
• T3 Pro Thermostat
• UWP™ Mounting System
• Decorative Cover Plate –
Small; Size 4.72” H X 5.9” W
(120 mm H X 150 mm W)
• Screws and Anchors
• 2 AA Batteries
• Thermostat Literature
T3 Pro
Thermostat
User Guide
TH3110U2008,
TH3210U2004
Read before installing
Heat On
Menu
Fan Auto
Heat On
Menu
Fan Auto
Call Customer Care toll-free at 18004681502.
Customer assistance
Thermostat controls
The screen will wake up by pressing any of the three buttons. If powered by the C wire, the screen stays lit for 45 seconds
after you complete changes. If powered by battery only, the screen stays lit for 8 seconds. Depending on how your
thermostat was installed, the screen light may always be on.
Read before installing
• System status
information
Cool On/Heat On/Em
Heat On, Compressor
Protection
• Indoor
temperature
setpoint
Press + or - to change
temperature setting
• Actual indoor
temperature
• Temperature/
Navigation
buttons
Press to increase or
decrease temperature
setpoint and to
navigate menus and
menu options
• Menu
Press to display
options. Change mode
(Heat, Off, Cool) or Fan
settings options.

Honeywell Home T3 Pro Specifications

General

Type	Programmable Thermostat
Wi-Fi Connectivity	Yes
Geofencing	Yes
Warranty	1-year limited warranty
Compatibility	HVAC systems including gas, electric, oil, and heat pumps
Display	Color touchscreen
Battery Backup	Yes
Temperature Range	40°F to 99°F
Schedule	7-day scheduling
Power Source	Hardwired
Stages	Up to 2 heating and 2 cooling stages
Connectivity	Wi-Fi
Remote Control	Yes (via app)
Installation	DIY installation or professional installation

Summary

Read Before Installing

Thermostat Controls Overview

Details the physical buttons and display elements for thermostat operation.

Customer Assistance

System Operation Settings

Changing System Mode

Steps and options for selecting heating, cooling, auto, or off system modes.

Fan Operation Settings

Changing Fan Mode

Instructions for setting the fan to Auto or On operation.

Battery Replacement

Battery Replacement Procedure

Step-by-step guide for removing the thermostat and inserting new batteries.

Alerts Screen

Alert Codes and Definitions

Defines common alert numbers, their reminders, and meanings for troubleshooting.

Troubleshooting

Common Troubleshooting Steps

Solutions for common issues like blank display, unresponsive systems, and flashing indicators.

Electrical Ratings

Technical specifications for terminal voltage and running current.

5-Year Limited Warranty