Owner's Manual
Table Of Contents
- Installation Guide
- User Guide
- Table of Contents
- Thermostat Features
- Getting the most from the T9 Smart Thermostat
- Using Your Thermostat
- Using the Honeywell Home App
- Basic thermostat operation
- Wi-Fi settings and connectivity
- Scheduling options
- Advanced Features
- Frequently Asked Questions (FAQs)
- Troubleshooting
- Specifications
- Regulatory Information
- Warranty
- C-Wire Adapter Guide
- Wire Labels
- FCC Compliance Statement
33-00478–03 8
Selecting system mode
Touch homescreen to wake the thermostat.
Touch the menu icon and then touch “Select Mode.”
• Heat: Controls the heating system.
• Cool: Controls the cooling system.
• Off: Turns the heating and cooling systems off.
• Auto: When enabled, the thermostat will automatically
use heating or cooling to reach the desired temperature.
Operation on page 9.
• Em Heat: Controls auxiliary or emergency heat; only
available on systems with a heat pump. Operation on
page 9.
Notes:
• All available modes may not be shown for some
applications. Scroll down to see more mode options (if
available).
• Auto mode may not appear on the thermostat screen or
in the app depending on your equipment, and how your
thermostat is configured.
• When Auto is selected, “Heat to” and “Cool to” will both
be shown from the “active” home screen.
• Em Heat is only available for heat pump systems. The
thermostat must also be configured to control a heat
pump and an auxiliary/emergency heat stage.
• When Auto is selected, “Heat to” and “Cool to” will both
be shown from the “active” home screen.