Honeywell TH4110D, TH400 User Manual

PRO TH4000 Series

69-1760ES-1

Programmable Thermostat

Operating
Manual

Quick Reference Card

Grasp and pull to see basic operating instructions at a glance.

This manual covers the following models:

TH4110D: For 1 Heat/1 Cool systems
TH4210D: 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).

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

Read and save these instructions.

® U.S. Registered Trademark. Patents pending.

Copyright © 2006 Honeywell International Inc. All rights reserved.

Table of contents

PRO TH4110D / TH4210D

About your new thermostat

Thermostat features ...................................2

Programming at a glance ..........................3

Quick reference to controls .......................4

Quick reference to display ........................ 5

Programming & Operation

Set time and day ........................................ 6

System switch (Heat/Cool) ........................7

Fan switch (Auto/On) .................................8

Using program schedules .........................9

Program schedule overrides ...................12

Adaptive Intelligent Recovery™ ..............14

Compressor protection ............................15

Appendices

Battery replacement ................................16

In case of difficulty...................................17

Customer assistance ...............................19

Accessories ............................................. .19

5-year limited warranty ............................20

This thermostat is ready to go!

Your new thermostat is pre-programmed

and ready to go.

See page 3 to check settings.

1

Operating Manual

About your new thermostat

Your new Honeywell thermostat 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.

• Energy Star® compliant to greatly reduce your heating/cooling expenses.

• Large, clear, backlit display is easy to read.

• Displays both room temperature and temperature setting.

• Built-in compressor protection.

2

PRO TH4110D / TH4210D

This thermostat is ready to go!

Your new thermostat is pre-programmed. Just set the time and day. Then check the
settings below and change if needed:

1. Set time and day (required for proper operation) .........................See page 6

2. Select system setting: Preset to Off..................................................See page 7

3. Select fan setting: Preset to Auto ......................................................See page 8

4. Program schedules: Preset to energy-saving levels
(assumes you wake at 6 am, leave at 8 am, return

at 6 pm and sleep at 10 pm) ....................................................... See pages 11-13

ONE-TOUCH TEMP CONTROL: You can override the program schedule at any time,
and manually adjust the temperature (see pages 12-13).

3

Operating Manual

Quick reference to controls

Temperature adjustment (see page 11-13)

Fan Switch (see page 8)
On: Fan runs continuously.
Auto: Fan runs only when heating

or cooling system is on.

• 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: Cooling system control.

• Off: All systems off.

• Heat: Heating system control.

• Em Heat: Emergency & Auxiliary
Heat control. Compressor is
locked out. (Select models only.)

4

Wake

Wed

Recovery

Em Aux
Heat On

Set To

Inside

AM

75

75

6:30

Replace Batt

Quick reference to display screen

PRO TH4110D / TH4210D

Low battery warning
(see page 16)

Current inside
temperature

Current program period

Wake/Leave/Return/Sleep
(see pages 9-10)

Adaptive Intelligent RecoveryTM

(see page 14)

Current day/time (see page 6)

5

Temperature setting
(see pages 11-13)

System status
Cool on: Cooling

system is on.
Heat on: Heating
system is on.
Em: Emergency heat
is on.**
Aux: Auxiliary heat
is on.**

** Only for heat pumps with this

capability (select models only).

Operating Manual

Set
Clock

AM

6:30

Wed

Set Day

Set the time and day

Press SET, then adjust time.

Press SET, then select current day.

1. Press the SET button, then press s or t
to set the clock time.

2. Press the SET button, then press s or t
to select the day of the week.

3. Press RUN to 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.

6

System switch

PRO TH4110D / TH4210D

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.)

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).

7

Operating Manual

Fan switch

Set FAN switch to choose whether the fan
runs continuously or only as needed.

Set the FAN switch 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.

8

PRO TH4110D / TH4210D

Save money by setting program schedules

It’s easy to program your system for maximum energy savings. You can program
four time periods each day, with different settings for weekdays and weekends.

WAKE

6:00 am

70

LEAVE

8:00 am

62

RETURN

6:00 pm

70

SLEEP

10:00 pm

62

Set to the time you awaken and the temperature you want
during the morning, until you leave for the day.

°

Set to the time you leave home and the temperature you want
while you are away (usually an energy-saving level).

°

Set to the time you return home and the temperature you
want during the evening, until bedtime.

°

Set to the time you go to bed and the temperature you want
overnight (usually an energy-saving level).

°

9

Operating Manual

Energy Star® settings for maximum cost savings

This thermostat is pre-set to use Energy Star® program settings. We recommend
these settings, since they can reduce your heating/cooling expenses by as much as
33%. (See next page to adjust times and temperatures of each time period.)

Cool (Mon-Fri)Heat (Mon-Fri) Heat (Sat-Sun) Cool (Sat-Sun)

Wake

(6:00 am)

Leave

(8:00 am)

Return

(6:00 pm)

Sleep

(10:00 pm)

70
62
70
62

°

°

°

°

75
83
75
78

10

°

°

[Or cancel period]

°

[Or cancel period]

°

70
62

70

62

°

°

[Or cancel period]

°

[Or cancel period]

°

75
83

75

78

°

°

°

°

To adjust program schedules

Wake

Set Schedule

MonTueWedThuFri

Heat

Set To

AM

75

6:30

Wake

Set Schedule

MonTueWedThuFri

Heat

Set To

AM

75

6:30

PRO TH4110D / TH4210D

Press SET 3 times, then adjust time.

Press SET, then set desired temperature.

1. Press SET until Set Schedule is displayed.

2. Press s or t to set your weekday Wake

time (Mon-Fri), then press SET.

3. Press s or t to set the temperature for this

time period, then press SET.

4. Set time and temperature for the next time
period (Leave). Repeat steps 2 and 3 for each
weekday time period.

5. Press SET to set weekend time periods (Sat­Sun), then press RUN to save & exit.

Note: Make sure the thermostat is set to the system
you want to program (Heat or Cool).

Note: To cancel an unwanted time period (except
Wake), press and hold s + HOLD for 4 seconds
while in the Set Schedule mode.

11

Operating Manual

Set To

AM

70

6:30

Temporary

Set To

AM

75

6:30

Program schedule override (temporary)

Press to temporarily adjust temperature.

Press to resume program schedule.

Note: Make sure the thermostat
is set to the system you want to
control (heat or cool).

Press s or t to immediately adjust the
temperature. This will temporarily override
the temperature setting for the current time
period.

The new temperature will be maintained
only until the next programmed time period
begins (see page 9). For example, if you
want to turn up the heat early in the morning,
it will automatically be lowered later, when
you leave for the day.

To cancel the temporary setting at any time,
press RUN.

12

Program schedule override (permanent)

Set To

AM

70

6:30

Hold

Set To

AM

75

6:30

PRO TH4110D / TH4210D

Press to permanently adjust temperature.

Press to resume program schedule.

Note: Make sure the thermostat is set
to the system you want to control (heat
or cool).

Press HOLD to permanently adjust
the temperature. This will override
the temperature settings for all time
periods.

The “Hold” feature turns off the
program schedule and allows you to
adjust the thermostat manually, as
needed.

Whatever temperature you set will be
maintained 24 hours a day, until you
manually change it, or press RUN to
cancel “Hold” and resume the program
schedule.

13