Honeywell TH4000 Thermostat User 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.)

MCR29469

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.

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PRO TH4110D / TH4210D

Table of contents

About your new thermostat

Appendices

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

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

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

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

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

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

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

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

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

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

This thermostat is ready to go!

Your new thermostat is pre-programmed

and ready to go.

See page 3 to check settings.

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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

•

ꢀ Separatelyꢀprogrammableꢀweekday/weekendꢀschedules.

ꢀ One-touchꢀtempꢀcontrolꢀoverridesꢀprogramꢀscheduleꢀatꢀanyꢀtime.

ꢀ EnergyꢀStar compliant to greatly reduce your heating/cooling expenses.

ꢀ Large,ꢀclear,ꢀbacklitꢀdisplayꢀisꢀeasyꢀtoꢀread.

ꢀ Displaysꢀbothꢀroomꢀtemperatureꢀandꢀtemperatureꢀsetting.

ꢀ Built-inꢀcompressorꢀprotection.

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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:

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

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

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

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).

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Operating Manual

Quick reference to controls

Temperature adjustment (see page 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: Cooling system control.

ꢀ Off: All systems off.

ꢀ Heat: Heating system control.

ꢀ Em Heat:ꢀEmergencyꢀ&ꢀAuxiliaryꢀ

Heat control. Compressor is

locked out. (Select models only.)

M29470

Fan Switch (see page 8)

On: Fan runs continuously.

Auto: Fan runs only when heating

or cooling system is on.

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PRO TH4110D / TH4210D

Quick reference to display screen

Low battery warning

see page 16)

Adaptive Intelligent Recovery

(see page 14)

Temperature setting

(see pages 11-13)

(

Replace Batt

Inside

Set To

System status

Cool on: Cooling

system is on.

Heat on: Heating

system is on.

Em:ꢀEmergencyꢀheatꢀ

is on.**

Aux: Auxiliary heat

is on.**

Current inside

temperature

Recovery

6 30

Current program period

Wake/Leave/Return/Sleep

Em Aux

Heat On

Wake

(see pages 9-10)

Wed

M29471

Current day/time (see page 6)

** Only for heat pumps with this

capability (select models only).

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Operating Manual

Set the time and day

Press SET, then adjust time.

1. Press the SET button, then press s or t

to set the clock time.

Set

. Press the SET button, then press s or t

to select the day of the week.

Clock

. Press RUNꢀtoꢀsaveꢀ&ꢀ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 SET, then select current day.

Set Day

Wed

MCR29472

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PRO TH4110D / TH4210D

System switch

The SYSTEM switch can be set to control

your heating or cooling system, depend-

ing on the season.

•

ꢀ Cool: Cooling system control.

ꢀ Off: All systems are off.

ꢀ Heat: Heating system control.

ꢀ Em Heat:ꢀEmergencyꢀ&ꢀAuxiliaryꢀ

Heat control. Compressor is locked

out. (Select models only.)

M29473

Set SYSTEM switch to control the

heating or cooling system.

CAUTION: EQUIPMENT DAMAGE

HAZARD. Doꢀnotꢀoperateꢀcoolingꢀ

system when outdoor temperature

is below 50°F (10°C).

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Operating Manual

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.

M29473

Set FAN switch to choose whether the fan

runs continuously or only as needed.

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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

Set to the time you awaken and the temperature you want

during the morning, until you leave for the day.

6:00 am

LEAVE

Set to the time you leave home and the temperature you want

while you are away (usually an energy-saving level).

8:00 am

RETURN

Set to the time you return home and the temperature you

want during the evening, until bedtime.

6:00 pm

SLEEP

0:00 pm

Set to the time you go to bed and the temperature you want

overnight (usually an energy-saving level).

2 ^°

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Operating Manual

Energy Star settings for maximum cost savings

Thisꢀthermostatꢀisꢀpre-setꢀtoꢀuseꢀEnergyꢀStar program settings. We recommend

these settings, since they can reduce your heating/cooling expenses by as much as

3%. (See next page to adjust times and temperatures of each time period.)

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

Wake

(

6:00 am)

70 ^°

62 ^°

70 ^°

75 ^°

83 ^°

75 ^°

78 ^°

70 ^°

75 ^°

Leave

8:00 am)

(

[

Or cancel period]

[Or cancel period]

Return

6:00 pm)

₇₅°

(

Or cancel period]

[Or cancel period]

Sleep

10:00 pm)

2 ^°

62 ^°

78 ^°

(

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PRO TH4110D / TH4210D

To adjust program schedules

Press SET 3 times, then adjust time.

1. Press SET until Set Schedule is displayed.

Set To

2. Press s or t to set your weekday Wake

time (Mon-Fri), then press SET.

Set Schedule

. Press s or t to set the temperature for this

time period, then press SET.

Heat

Wake

4. Set time and temperature for the next time

periodꢀ(Leave).ꢀRepeatꢀstepsꢀ2ꢀandꢀ3ꢀforꢀeachꢀ

weekday time period.

MonTueWedThuFri

Press SET, then set desired temperature.

5. Press SET to set weekend time periods (Sat-

Sun), then press RUNꢀtoꢀsaveꢀ&ꢀexit.

Set To

Set Schedule

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.

Heat

Wake

MonTueWedThuFri

MCR29474

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Operating Manual

Program schedule override (temporary)

Press to temporarily adjust temperature.

Press s or t to immediately adjust the

temperature. This will temporarily override

the temperature setting for the current time

period.

Te mporary

Set To

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.

Press to resume program schedule.

Set To

To cancel the temporary setting at any time,

press RUN.

MCR29475

Note: Make sure the thermostat

is set to the system you want to

control (heat or cool).

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PRO TH4110D / TH4210D

Program schedule override (permanent)

Press to permanently adjust temperature.

Press HOLD to permanently adjust

the temperature. This will override

the temperature settings for all time

periods.

Hold

Set To

The “Hold” feature turns off the

program schedule and allows you to

adjust the thermostat manually, as

needed.

Press to resume program schedule.

Set To

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.

MCR29476

Note: Make sure the thermostat is set to the

system you want to control (heat or cool).

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Operating Manual

Adaptive Intelligent Recovery (AIR)

Adaptive Intelligent Recovery eliminates guesswork when setting your schedule.

It allows the thermostat to “learn” how long your furnace and air conditioner take

to reach the temperature you want.

Just set your program schedule to the time you want the house to reach your desired

temperature. The thermostat then turns on the heating or cooling at just the right time

to reach your scheduled temperature at your scheduled time.

For example: Set the Wake time to 6 am and the temperature to 70°. The heat will

come on before 6 am, so the temperature is 70° by the time you wake at 6.

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PRO TH4110D / TH4210D

Built-in compressor protection

This feature helps prevent damage to the

compressor in your air conditioning or heat

pump system.

Inside

Set To

6 30

Wed

Damageꢀcanꢀoccurꢀifꢀtheꢀcompressorꢀisꢀ

restarted too soon after shutdown. This fea-

ture forces the compressor to wait for a few

minutes before restarting.

Cool

Wake

MCR29477

Duringꢀtheꢀwaitꢀtime,ꢀtheꢀdisplayꢀwillꢀflashꢀ

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.

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Operating Manual

Battery replacement

Pull at bottom to

remove thermostat

from wallplate.

Batteries are optional (for backup

power) if your thermostat was wired

to run on AC power when installed.

Install fresh batteries when the

REPLACE BATT warning begins flash-

ing. The warning flashes about two

months before the batteries are

depleted.

Turn thermostat over,

insert fresh AA alkaline

batteries, then reinstall

thermostat.

Replace batteries once a year, or

before leaving home for more than a

month. If batteries are inserted within

one minute, the time and day will not

have to be reset. All other settings are

permanently stored in memory, and

do not require battery power.

MCR29478

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PRO TH4110D / TH4210D

In case of difficulty

If you have difficulty with your thermostat, please try the following suggestions.

Most problems can be corrected quickly and easily.

Display is blank

•ꢀ Checkꢀcircuitꢀbreakerꢀandꢀresetꢀifꢀnecessary.

•

ꢀ Makeꢀsureꢀpowerꢀswitchꢀatꢀheatingꢀ&ꢀcoolingꢀsystemꢀisꢀon.

ꢀ Makeꢀsureꢀfurnaceꢀdoorꢀisꢀclosedꢀsecurely.

ꢀ MakeꢀsureꢀfreshꢀAAꢀalkalineꢀbatteriesꢀareꢀcorrectlyꢀinstalledꢀ(seeꢀ

page 16).

Heating or

•ꢀ SetꢀsystemꢀswitchꢀtoꢀHeat (see page 7). Make sure the temperature is

cooling system

does not respond

set higher than the Inside temperature.

•

ꢀ SetꢀsystemꢀswitchꢀtoꢀCool (see page 7). Make sure the temperature is

set lower than the Inside temperature.

ꢀ Waitꢀ5ꢀminutesꢀforꢀtheꢀsystemꢀtoꢀrespond.

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Operating Manual

In case of difficulty

Temperature

settings do not

change

Make sure heating and cooling temperatures are set to acceptable ranges:

•

ꢀ Heat:ꢀ40°ꢀtoꢀ90°Fꢀ(4.5°ꢀtoꢀ32°C).

ꢀ Cool:ꢀ50°ꢀtoꢀ99°Fꢀ(10°ꢀtoꢀ37°C).

“

Cool On” or

Heat On” is

•

Compressor protection feature is engaged. Wait 5 minutes for the system

to restart safely, without damage to the compressor (see page 15).

flashing

“

Heat On” is not

•

Set the System switch to Heat, and set the temperature level above the

current room temperature (see page 7).

displayed

“

Cool On” is not

Set the System switch to Cool, and set the temperature level below the

current room temperature (see page 7).

displayed

To restore

Energy Star

default settings

FollowꢀtheseꢀstepsꢀtoꢀrestoreꢀEnergyꢀStarꢀdefaultꢀsettingsꢀ(seeꢀpageꢀ10):

. Press SET 3 times to display “Set Schedule.”

. Press and hold SET and RUN at the same time for 4 seconds.

. Press RUN.

9-1760EFS—01

PRO TH4110D / TH4210D

Customer assistance

Pull at bottom to

remove thermostat

from wallplate.

For assistance with this product, please visit

http://yourhome.honeywell.com.

Or call Honeywell Customer Care toll-free at

-800-468-1502.

To save time, pleas