Product
Information
TH8110R1008
TH8320R1003
TH8321R1001
Setting the time/date
1. Touch the current time. The screen displays Select Option.
2. Touch Time or Date, then touch Select.
3. Touch s or t until the proper time/date is displayed.
4. Touch Done to save or Cancel to ignore changes.
5. Touch Home to redisplay the Home screen.
Setting system mode
1. Touch SYSTEM to display system settings.
2. Touch desired option: Heat, Cool, Off, Auto, Em Heat.
3. Touch Done to save and exit.
NOTE: The Auto and Em Heat system settings may not
appear, depending on how your thermostat was installed.
Quick reference
The screen lights when you press any button. It stays lit for 16 seconds if the
thermostat is battery powered (45 seconds if the thermostat is powered with a
C-wire). Depending on how your thermostat was installed, the screen light may
always be on.
HOME. Touch to display Home screen.
FAN. Select fan mode.
SYSTEM. Select system mode (Heat/Cool).
MENU. Touch to display options. Start here to set
a program schedule.
Current status. Shows system mode (heat/cool),
outdoor temperature and humidity (with optional
outdoor sensor).
Override. Touch to override program schedule.*
Current schedule. Touch an arrow to change
temperature setting and set a temporary hold.
Current program status.*
Indoor conditions. Shows indoor temperature
and humidity.
Current time. Touch to set the current time/date.
Alert Light. On when alert message is
active or system is set to EmHeat. Flashes for
battery-only power; on continuous if system
powered.
Micro SD Card port. Use card to transfer
ISU settings, alerts, holiday schedule
settings, and custom events from one thermostat
to others. Holiday schedule and custom events
only available when thermostat is set for
commercial application.
VisionPRO® Series
with RedLINK™
Search for local rebates: HoneywellHome.com/Rebates
Adjusting program schedules
1. Touch MENU.
2. Select Edit Schedule to display Use Scheduling Assistant?
3. Touch Yes to create a schedule by answering simple questions.
Adjusting humidification, dehumidification,
or ventilation settings
1. Touch MENU and use the down arrow to select Humidification,
Dehumidification, or Ventilation.
2. Touch Select to adjust the settings.
Replacing thermostat batteries
Press the release button on top of the thermostat to remove it
from the wall plate.
Some versions of this thermostat don't have a button on the top.
In that case, grip the thermostat along the top and bottom and
pull it straight off the wallplate.
Install 4 fresh AA alkaline batteries.
Button
Thermostat
Product Manuals
The full user guide is available at customer.resideo.com. Search
for the thermostat model number.
Videos
Search online for VisionPRO® Series Videos.
Need Help?
For assistance please visit honeywellhome.com, or call toll-free:
1-800-468-1502.
This thermostat contains a Lithium battery which may
contain Perchlorate material. Perchlorate Material—
special handling may apply.
See www.dtsc.ca.gov/hazardouswaste/perchlorate
Wallplate
Thermostat
M34071
(back view)
33-00308EFS-07
M34000B