Honeywell PRO TH4000 series User manual

Operating
Manual
TH4000 Series
Programmable Thermostat
22
22
69-2016EF-03

Read and save these instructions.
Patents pending.
Copyright © 2013 Honeywell International Inc. All rights reserved.
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 10°C (50°F).

1 69-2016EF—03
This thermostat is ready to go!
Your new thermostat is pre-programmed
and ready to go.
See page 3 to check settings.
Table of contents
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 .....................11
Adaptive Intelligent Recovery ...................13
Compressor protection..............................14
Appendices
Battery replacement..................................15
In case of difficulty .................................... 16
Customer assistance ................................18
Accessories...............................................18
TH4110D / TH4210D

Operating Manual
About your new thermostat
69-2016EF—03 2
Your new 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-savingsettingsformaximumcostsavings.
• Large,clear,backlitdisplayiseasytoread.
• Displaysbothroomtemperatureandtemperaturesetting.
• Built-incompressorprotection.
2
About your new thermostat

TH4110D / TH4210D
3 69-2016EF—03
Your new thermostat is pre-programmed. Just set the time and day. Then check the set-
tings 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).
This thermostat is ready to go!

Operating Manual
69-2016EF—03 4
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.
Quick reference to controls
• 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.)

TH4110D / TH4210D
5 69-2016EF—03
Wake
Wed
Recovery
Em Aux
Heat On
Set To
Inside
AM
22
22
6:30
Replace Batt
Quick reference to display screen
Low battery warning
(see page 16)
Adaptive Intelligent Recovery
(see page 14)
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).
Current day/time (see page 6)
Current inside
temperature
Current program period
Wake/Leave/Return/Sleep
(see pages 9-10)

Operating Manual
69-2016EF—03 6
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.
Set the time and day
Press SET, then adjust time.
Press SET, then select current day.
Set
Clock
AM
6:30
Wed
Set Day

TH4110D / TH4210D
7 69-2016EF—03
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 10°C (50°F).

Operating Manual
69-2016EF—03 8
Fan switch
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.
Set FAN switch to choose whether the fan
runs continuously or only as needed.

TH4110D / TH4210D
9 69-2016EF—03
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.
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).
Save money by setting program schedules
WAKE
6:00 am
21 °
LEAVE
8:00 am
17 °
RETURN
6:00 pm
21 °
SLEEP
10:00 pm
17 °

Operating Manual
69-2016EF—03 10
Wake
(6:00 am)
Leave
(8:00 am)
Return
(6:00 pm)
Sleep
(10:00 pm)
Cool (Mon-Fri)Heat (Mon-Fri) Heat (Sat-Sun) Cool (Sat-Sun)
70 °75 °70 °75 °
62 °83 °62 °
[Or cancel period]
83 °
[Or cancel period]
70 °75 °70 °
[Or cancel period]
75 °
[Or cancel period]
62 °78 °62 °78 °
This thermostat is pre-set with energy-saving program settings. We recommend these
settings,sincetheycanreduceyourheating/coolingexpenses.(Seenextpagetoadjust
times and temperatures of each time period.)
Energy-saving settings for maximum cost savings

TH4110D / TH4210D
11 69-2016EF—03
To adjust program schedules
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 (Sat-
Sun), 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.
Press SET 3 times, then adjust time.
Press SET, then set desired temperature.
Wake
Set Schedule
MonTueWedThuFri
Heat
Set To
AM
24
6:30
Wake
Set Schedule
MonTueWedThuFri
Heat
Set To
AM
24
6:30

Operating Manual
69-2016EF—03 12
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.
Press HOLD to permanently adjust
Program schedule override (temporary)
Press to temporarily adjust temperature.
Press to resume program schedule.
Set To
AM
21
6:30
Temporary
Set To
AM
24
6:30
Note: Make sure the thermostat is set to the
system you want to control (heat or cool).

TH4110D / TH4210D
13 69-2016EF—03
Note: Make sure the thermostat is set
to the system you want to control (heat
or cool).
Press to permanently adjust temperature. 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.
This feature helps prevent damage to the
compressor in your air conditioning or
heat pump system.
Program schedule override (permanent)
Set To
AM
21
6:30
Hold
Set To
AM
24
6:30
Press to resume program schedule.

Operating Manual
69-2016EF—03 14
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21°.Theheatwillcome
on before 6 am, so the temperature is 21° by the time you wake at 6.
Adaptive Intelligent Recovery (AIR)

TH4110D / TH4210D
15 69-2016EF—03
Wake
Wed
Cool
On
Set ToInside
AM
24
24
6:30
Damagecanoccurifthecompressorisrestarted
too soon after shutdown. This feature 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.
Batteries are optional (for backup power) if your
thermostat was wired to run on AC power when
installed.
Message flashes until safe restart
time has elapsed.
Built-in compressor protection

Operating Manual
About your new thermostat
69-2016EF—03 16
Install fresh batteries when the REPLACE
BATT warning begins flashing. The
warning flashes about two months
before the batteries are depleted.
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.
Accessories/replacement
parts
Cover plate assembly*...............................
Pull at bottom to
remove thermostat
from wallplate.
Turn thermostat over,
insert fresh AA alkaline
batteries, then reinstall
thermostat.
Battery replacement

TH4110D / TH4210D
17 69-2016EF—03
If you have difficulty with your thermostat, please try the following suggestions.
Most problems can be corrected quickly and easily.
Display is blank • Checkcircuitbreakerandresetifnecessary.
• Makesurepowerswitchatheating&coolingsystemison.
• Makesurefurnacedoorisclosedsecurely.
• MakesurefreshAAalkalinebatteriesarecorrectlyinstalled(seepage
16).
Heating or cooling
system does not
respond
• SetsystemswitchtoHeat (see page 7). Make sure the temperature is
set higher than the Inside temperature.
• SetsystemswitchtoCool (see page 7). Make sure the temperature is
set lower than the Inside temperature.
• Wait5minutesforthesystemtorespond.
In case of difficulty

Operating Manual
About your new thermostat
69-2016EF—03 18
Temperature
settings do not
change
Make sure heating and cooling temperatures are set to acceptable ranges:
• Heat:4.5°to32°C(40°to90°F).
• Cool:10°to37°C(50°to99°F).
“Cool On” or
“Heat On” is
flashing
•Compressor protection feature is engaged. Wait 5 minutes for the system to
restart safely, without damage to the compressor (see page 15).
“Heat On” is not
displayed
•Set the System switch to Heat, and set the temperature level above the
current room temperature (see page 7).
“Cool On” is not
displayed
•Set the System switch to Cool, and set the temperature level below the
current room temperature (see page 7).
To restore
default settings
Follow these steps to restore default settings (see page 10):
1. Press SET 3 times to display “Set Schedule.”
2. Press and hold SET and RUN at the same time for 4 seconds.
3. Press RUN.
In case of difficulty