The Honeywell T4 Pro is a smart thermostat that can be controlled remotely from any computer or smartphone. This manual will walk you through the installation process and give you some tips on how to use your new thermostat. You can also learn how to reset the T4 Pro using this instruction manual as well as troubleshoot the device if you encounter problems.
Sections in this Manual
- Package Includes
- Thermostat controls
- Customer assistance
- System operation settings
- Fan operation settings
- Fan modes
- Set the time and date
- To adjust program schedules
- Program schedule override (temporary)
- Program schedule override (permanent)
- Setting degrees Fahrenheit or Celcius
- Adjusting keypad lockout
- Adjusting idle backlight display brightness
- Adaptive Intelligent Recovery
- Built-in compressor protection
- Battery replacement
- Alerts
- Troubleshooting
- Electrical Ratings
- 5-year limited warranty
T4 Pro Programmable Thermostat TH4110U2005, TH4210U2002
Package Includes
- T4 Pro Thermostat
- UWP™ Mounting System
- Decorative Cover Plate
- Screws and Anchors
- 2 AA Batteries
- Thermostat Literature
Read before installing
Thermostat controls
The screen will wake up by pressing any of the five 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.
Customer assistance
For assistance with this product, please visit Honeywellhome.com/support
