Honeywell Honeywell Thermostat PRO TH3000 Series User manual

Operating
Manual
PRO TH3000 Series
Non-Programmable Digital Thermostat
69-1776EF-1

Read and save these instructions.
® U.S. Registered Trademark. Patents pending.
Copyright © 2006 Honeywell International Inc. All rights reserved.
Need Help?
For assistance with this product please visit http://yourhome.honeywell.com
or call Honeywell Customer Care toll-free at 1-800-468-1502
CAUTION: EQUIPMENT DAMAGE HAZARD.
To prevent possible compressor damage, do not operate cooling system when outdoor
temperature is below 50°F (10°C).
This manual covers the following models:
TH3110D: For 1 Heat/1 Cool systems
TH3210D: For 2 Heat/1 Cool heat pump systems only
(Pull thermostat from wallplate and turn over to find model number.)

PRO TH3110D / TH3210D
1
Table of contents
About your new thermostat
Thermostat features...................................2
Quick reference to controls.......................3
Quick reference to display ........................4
Thermostat Operation
System switch (Heat/Cool)........................5
Fan switch (Auto/On) .................................6
Temperature controls.................................7
Compressor protection..............................8
Appendices
Battery replacement ..................................9
In case of difficulty...................................10
Customer assistance ............................... 12
Accessories............................................. .12
5-year limited warranty............................13

Operating Manual
2
Your new Honeywell thermostat has been designed to give you many years of reliable
service and easy-to-use, push-button climate control.
Features
• Large, clear, backlit display is easy to read, even in the dark.
• Displays both room temperature and temperature setting.
• Built-in compressor protection.
About your new thermostat

PRO TH3110D / TH3210D
3
About your new thermostat
Temperature adjustment
(see page 7)
Fan Switch (see page 6)
On: Fan runs continuously.
Auto: Fan runs only when heating or
cooling system is on.
Quick reference to controls
System switch (see page 5)
• Cool: Cooling system control.
• Off: All systems off.
• Heat: Heating system control.
• Em Heat: Emergency & Auxiliary
Heat control. Compressor is locked
out. (Select models only.)
Digital display screen

Operating Manual
4
System Status
• Cool On: Cooling system is on.
• Heat On: Heating system is on.
• Em: Emergency heat is on. **
• Aux: Auxiliary heat is on. **
Quick reference to display screen
Em Aux
Heat On
Set To
Inside
75
75
Replace Batt
Current inside temperature Temperature setting
If “Heat On” or “Cool
On” is flashing, com-
pressor protection is
engaged (see page 8).
Low battery warning
(see page 9)
** Only for heat pumps with this capability
(select models only).

PRO TH3110D / TH3210D
5
The SYSTEM switch can be set to control
your heating or cooling system, depending
on the season.
• Cool: Cooling system control.
• Off: All systems are off.
• Heat: Heating system control.
• Em Heat: Emergency & Auxiliary Heat
control. Compressor is locked out.
(Select models only.)
System switch
Set SYSTEM switch to control the
heating or cooling system.
CAUTION: EQUIPMENT DAMAGE HAZARD.
Do not operate cooling system when outdoor
temperature is below 50°F (10°C).

Operating Manual
6
Fan switch
Set the FAN switch to Auto or On.
In “Auto” mode (the most commonly used
setting), the fan runs only when the heat-
ing or cooling system is on.
If set to “On,” the fan runs continuously.
Use this setting for improved air circula-
tion, or for more efficient air cleaning.
Set FAN switch to choose whether the fan
runs continuously or only as needed.

PRO TH3110D / TH3210D
7
About your new thermostatTemperature controls
Press the temperature adjustment
buttons until the temperature you want
is displayed in the upper right portion of
the screen.
Note: Make sure the SYSTEM switch is set
to the system you want to control (Heat or
Cool).
Desired
temperature.
Temperature
adjustment buttons.
Cool On
Set To
78
Inside
75

Operating Manual
8
This feature helps prevent damage to the
compressor in your air conditioning or heat
pump system.
Damage can occur if the compressor is
restarted too soon after shutdown. This fea-
ture forces the compressor to wait 5 minutes
before restarting.
During the wait time, the display will flash
the message Cool On (or Heat On if you have
a heat pump). When the safe wait time has
elapsed, the message stops flashing and the
compressor turns on.
Message flashes until safe restart
time has elapsed.
Built-in compressor protection
Cool On
Set To
Inside
75
75