Honeywell Honeywell Thermostat PRO TH3000 Series User manual

This martua| covers the following modets:
TH3110D: For 1Heat/1 Cool systems
TN3210D: For 2 Heat/1 Cool heat pump systems only
(Pull thermostat from wallplate and turn over to find model number.)
CAUTION: EQUIPMENT DAMAGE HAZARD,
To prevent possible compressor damage, do not operate cooling system when outdoor
temperature is below 50°F (10°C).
For assistance with this product please Visithttp://yourhemeLhoneyweH.eom
oroa! IHoneywel! Customer Care toil-free at 1_800.468_1502
Read and save these instructions,
® U.S. Registered Tredemark. Patents pending.
Copyright ® 2006 Honeywell International Inc. All rights reserved.

PRO TH3110D / TH3210D
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
!
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, bacMit display is easy to read, even in the dark.
Displays both room temperature and temperature setting.
Built-in compressor protection.

PRO TH3110D / TH3210D
- i
Digita| display screen Temperature adjustment
page 7)
Fan Switch (see page 6)
On: Fan runs continuously.
Auto: Fan runs only when heating or
cooling system is on,
System switch (see page 5)
oCool: Cooling system control.
•Off; All systems off,
•Heat: Heating system control,
•IEm Heat =Emergency & Auxiliary
Heat control. Compressor is locked
out, (Select models only,)

Operating Manual
Current inside temperature Temperature setting
Low battery warning
(see page 9)
System Status
•Cool On: Cooling system is on.
• Heat On: Heating system is on.
•Ern: Emergency heat is on. **
•Aux: Auxiliary heat is on. **
** Only for heat pumps with this capability
(select models only).
4
tf "Heat On" or "Cool
On" is flashing, com-
pressor protection is
engaged (see page 8).

PRO TH3110D / TH3210D
The SYSTEM switch can be set to control
your heating or cooling system, depending
on the season.
Coop Cooling system control.
• Off: All systems are off.
• Heat: Heating system control.
• IEm Heat" Emergency & Auxiliary Heat
control. Compressor is locked out.
(Select models only.)
Set SYSTEMswitch 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
r'1
i
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
Press the temperature adjustment
buttons until the temperature you want
is displayed in the upper right portion of
the screen.
Note: Make sure the SYSTEMswitch is set
to the system you want to control (Heat or
Cool),
temperature, adjustment buttons.

Operating Manual
i !
Message flashes
time has elapsed.
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.