Honeywell PRO TH4110B User manual

Operating
Manual
TH4110B
Programmable Thermostat

® U.S. Registered Trademark. Patents pending.
Copyright © 2005 Honeywell International Inc. All rights reserved.
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Need Help?
For assistance with this product please visit www.honeywell.com/yourhome
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).

PRO TH4110B Programmable Thermostat
1
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Thermostat features ........................2
Programming at a glance ................3
Quick reference to controls............4
Quick reference to display..............5
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Set time and day..............................6
System switch (Heat/Cool) ............7
Fan switch (Auto/On) ......................8
Using program schedules................9
Program schedule overrides ........12
Compressor protection ................14
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Battery replacement......................15
In case of difficulty ......................16
Customer assistance......................18
Accessories....................................18
Limited warranty ..........................19
Table of contents
This thermostat is ready to go!
Your new thermostat is pre-
programmed and ready to go.
See page 3 to check settings.
CAUTION: EQUIPMENT DAMAGE
HAZARD. To prevent possible
compressor damage, do not operate
cooling system when outdoor
temperature is below 50°F (10°C).

Operating Manual
2
About your new thermostat
Congratulations on the purchase of your new Honeywell thermostat. It has been
designed to give you many years of reliable service and easy-to-use, push-button
climate control.
Features
• Separately programmable weekday/weekend schedules.
• One-touch temp control overrides program schedule at any time.
• EnergyStar®compliant to greatly reduce your heating/cooling expenses.
• Large, clear display is easy to read.
• Displays both room temperature and temperature setting.
• Built-in compressor protection.

PRO TH4110B Programmable Thermostat
3
This thermostat is ready to go!
Your new thermostat is pre-programmed and ready to go.All you have to do is set
the time and day.Then check the settings below and change if needed:
1SSeettttiimmeeaannddddaayy((rreeqquuiirreeddffoorrpprrooppeerrooppeerraattiioonn))................................See page 6
2SSeelleeccttssyysstteemmsseettttiinngg((HHeeaatt//CCooooll))::Preset to Heat..............To change, see page 7
3SSeelleeccttffaannsseettttiinngg((AAuuttoo//OOnn))::Preset to Auto ......................To change, see page 8
4PPrrooggrraammsscchheedduulleess::Preset to energy-saving levels
while you’re at work or asleep (assumes you
wake at 6 am, leave at 8 am, return at 6 pm
and go to bed at 10 pm) ..............................................To change, see pages 9-11
ONE-TOUCH TEMP CONTROL: You can override the program schedule at any time,
and manually adjust the temperature (see pages 12-13).

Operating Manual
4
Quick reference to controls
Digital display (see page 5) Temperature adjustment (see pages 11-13)
•Set: Press to set time/day/
schedule
•Hold: Press to override
programmed temperature control
•Run: Press to resume program
schedule
System switch (see page 7)
•Cool: Thermostat controls only
the cooling system.
•Heat: Thermostat controls only
the heating system.
•Off: Heating and cooling
systems are off.
Fan switch (see page 8)
On: Fan runs continuously.
Auto: Fan runs only when heating
or cooling system is on.

PRO TH4110B Programmable Thermostat
5
Inside Set To
75 6:30 AM
75
Wake Cool
On
°°
Replace Batt
Quick reference to display screen
Current inside
temperature
Low battery warning
(see page 15)
Current day/time (see page 6)
Current program period
Wake/Leave/Return/Sleep
(see pages 10-11)
Temperature setting
(see pages 11-13)
System status
Heat On/Cool On
(If flashing, see page 14)
Wed

Operating Manual
6
Set the time and day
1 Press the SSEETTbutton, then press
or to set the clock time.
2 Press the SSEETTbutton, then press
or to select the day of the
week.
3 Press RRUUNNto save & exit.
Note: If the display flashes Set Clock,
the thermostat will follow your settings
for the weekday “Wake” time period until
you reset the time and day.
Press SSEETT, then adjust time
6:30 AM
Set
Clock
Press SSEETT, then select current day
Wed
Set Day

PRO TH4110B Programmable Thermostat
7
System switch
The SSYYSSTTEEMMswitch can be set to con-
trol your heating or cooling system,
depending on the season.
•HHeeaatt::Thermostat controls only
the heating system.
•CCooooll::Thermostat controls only
the cooling system.
•OOffff::Heating and cooling
systems are off.
Set SSYYSSTTEEMMswitch to control the heating or
cooling system.
CAUTION: EQUIPMENT DAMAGE
HAZARD. To prevent possible
compressor damage, do not operate
cooling system when outdoor
temperature is below 50°F (10°C).

Operating Manual
8
Fan switch
Set the FFAANNswitch to Auto or On.
In “Auto” mode (the most commonly
used setting), the fan runs only
when the heating or cooling system
is on.
If set to “On,” the fan runs
continuously. Use this setting for
improved air circulation, or for
more efficient air cleaning.
Set FFAANNswitch to choose whether the fan
runs continuously or only as needed.