Honeywell PRO TH2000 Series User manual

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PRO TH2000 Series
This manual covers the following models:
TH2110D: For 1-Heat / 1-Cool systems
TH2210D : For 2-Heat / 1-Cool heat pump systems
(Remove thermostat from wallplate and turn over to find model number.)
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.
© 2006 Honeywell International Inc. All rights reserved.
CAUTION: EQUIPMENT DAMAGE HAZARD.
To prevent possible compressor damage, do not use Cooling mode when the
outdoor temperature is below 50 °F (10 °C).

Operating Manual
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Overview
Thermostat features ............................. 1
Quick start ............................................ 2
Quick reference to controls .................. 3
Quick reference to display.................... 4
Programming & Operation
Setting the clock ................................... 5
System switch (Heat/Cool) ................... 6
Fan switch (Auto/On)............................ 7
Using the schedule.......................... 8-10
Temporary schedule override ..............11
Permanent schedule override ............ 12
Adaptive Intelligent Recovery™ ......... 13
Compressor protection ....................... 13
Appendices
Battery replacement ........................... 14
In case of difficulty.............................. 15
Customer assistance.......................... 16
2-year limited warranty ....................... 17
Table of contents
Your new thermostat is pre-programmed
and ready to go!
See page 2 for quick start.

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Your new Honeywell thermostat has been designed to give you many years of reliable
service and easy-to-use, push-button climate control.
Features
• Backlit display is easy to read
• Displays ambient (measured) temperature at all times
• One-touch access to setpoint temperature
• Energy Star®compliant to greatly reduce your heating/cooling expenses
• Separate programmable weekday/weekend schedules (5+2 day programming)
• Temporary and permanent override of schedule
• Adaptive Intelligent Recovery™ ensures right temperature at the right time
• Built-in compressor protection
About your new thermostat

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Simply perform the three steps below and the thermostat is in operation:
nSet the clock.................................................................................................. See page 5
oSelect whether to heat or cool....................................................................... See page 6
pSelect whether to run the fan continuously or only when needed ................. See page 7
Your thermostat is pre-programmed with Energy Star®settings. If you do not wish to use
these settings, you can:
Modify the schedule .................................................................................... See page 10
Temporarily override the schedule .............................................................. See page 11
Permanently override the schedule............................................................. See page 12
This thermostat is ready to go

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Quick reference to controls
System switch (see page 6)
•Cool: System is in Cooling mode.
•Off: System is off.
•Heat: System is in Heating mode.
•Em Heat: System is in Emergency Heat mode.
Fan Switch (see page 7)
•On: Fan runs continuously.
•Auto: Fan runs only when
heating or cooling is taking place.
Press to adjust temperature
Screen
Lit for 12 seconds when you press any button.
Press to set clock,
day or schedule
(see pages 5 & 10).
Press to override
schedule and
hold temperature
(see page 12).
Press to run
(follow)schedule
(see page 8).

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Quick reference to display screen
* When Heat On or Cool On is flashing, compressor protection is engaged (see page 13).
** Applies to TH2210D model only.
Temperature
The ambient (measured) temperature
is normally displayed. To view the
setpoint temperature, press either of
the temperature adjustment buttons
once. The setpoint temperature will
appear for five seconds.
System status
• Cool On: Cooling is activated. *
• Heat On: Heating is activated. *
• Aux On: Auxiliary heat is activated. **
Low-battery warning
(see page 14)
Setpoint indicator
Appears when the setpoint
temperature is displayed.
Clock
Schedule period
Permanent schedule override
(see page 12)
Temporary schedule override
(see page 11)

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nPress the Set button. Set Time will flash on the screen.
oPress the or button to set the time.
pPress the Set button again. Set Day will flash on the screen.
qPress the or button to select the day of the week.
rPress the Run button to save the changes & exit. (The changes are also
saved if you do not press any button for 60 seconds.)
NOTE: The clock has lost its settings when the time display flashes. If the
thermostat is following the schedule, it will use the temperature settings
programmed for the Wake period of the weekdays until you re-adjust the
clock.
Set the clock
Set Time
Set Day

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System switch
Use the SYSTEM switch to place the system in one of the
following modes:
•Cool: System is in Cooling mode.
•Off: System is off.
•Heat: System is in Heating mode.
•Em Heat: System is in Emergency Heat mode. Only auxiliary
heating can be activated. The compressor is disabled. (This
mode is available on TH2210D model only.)
CAUTION: EQUIPMENT DAMAGE HAZARD.
Do not use Cooling mode when the outdoor
temperature is below 50 °F (10 °C).

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Fan switch
Use the FAN switch to select the fan operation.
•Auto: The fan runs only when heating or
cooling is activated (commonly used setting).
•On: The fan runs continuously. Use this
setting for improved air circulation or for
more efficient air cleaning.

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Press the Run button to follow the programmed schedule. For maximum energy savings
while maintaining comfort, you can program the schedule such that the temperature is at an
economical level when you sleep or leave for work and at a comfortable level when you are
awake and at home. You can program up to four periods per day:
To program a period, you need to set its start time and its two temperature settings (one
when the thermostat is in cooling mode and another one when it is in heating mode). The
same settings are used every day from Monday to Friday and another set of settings are
used for Saturday and Sunday. For example, you could program all four periods for the
weekdays but only two periods (Wake and Sleep) for the weekends.
Using the schedule
Wake Starts when you wake up
Leave Starts when you leave for work
Return Starts when you return home
Sleep Starts when you go to sleep

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The thermostat has been programmed with Energy Star®settings. These settings can
reduce your energy bills by 33%. See the next page if you wish to modify the settings.
Energy Star settings
Period Weekdays Weekends
Start time Heat Cool Start time Heat Cool
Wake 6:00 am 70 °F (21 °C) 75 °F (24 °C) 6:00 am 70 °F (21 °C) 75 °F (24 °C)
Leave 8:00 am 62 °F (17 °C) 83 °F (28 °C) - - - - - -
Return 6:00 pm 70 °F (21 °C) 75 °F (24 °C) - - - - - -
Wake 10:00 pm 62 °F (17 °C) 78 °F (26 °C) 10:00 pm 62 °F (17 °C) 78 °F (26 °C)

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n Press the Set button 3 times until Set Schedule appears. The start time of
the first period (Wake) of the week days (Mon-Fri) will flash.
oPress the or button to set the time.
pPress the Set button. The temperature setting for that period will flash.
qTo program the temperature settings for the cooling mode, place the
System switch in Cool. To program the temperature settings for the
heating mode, place the switch in Heat.
rPress the or button to set the temperature.
sPress the Set button. The start time of the next period will flash.
tRepeat steps 2 through 6 for each of the remaining periods.
uOnce all adjustments are made, press the Run button to save them and
exit. (The changes are also saved if you do not press any button for 60 seconds.)
Modifying the schedule
The Wake
period for the
weekdays is
set to 6 a.m.
and 70 °F
(Heating
mode).
To skip a
period (except
Wake), press
the Hold
button for 4
sec. while that
period is
displayed.

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To temporarily ignore the schedule, press or until the desired
temperature is displayed. The word Temporary will appear on the
screen. The new temperature will be used until the next period
begins.
NOTE: Pressing or once will display the setpoint temperature.
To change the setpoint temperature, press either button more than
once.
Press the Run button if you wish to cancel the temporary setting
before the beginning of the next period.
Temporary override of schedule

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To permanently ignore the schedule, press or until the desired
temperature is displayed. Then, press the Hold button to maintain
the new temperature indefinitely. The word Hold will appear on the
screen.
Press the Run button if you wish to cancel the override and resume
the schedule. The word Hold will disappear and the thermostat will
be set to the temperature programmed for the current period.
Permanent override of schedule

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Adaptive Intelligent Recovery™ allows the thermostat to “learn” how long your furnace or air
conditioner takes to reach the set temperature. Simply program the desired times and desired
temperatures into the schedule. The thermostat will determine when to activate heating or cooling
so that the desired temperature is attained at the desired time.
Example: If you set the Wake time to 6 a.m. and the temperature to 70 °F (21 °C), the heat will
come on before the set time, so the temperature is 70 °F (21 °C) by the time you wake at 6 a.m.
Your thermostat has a feature that helps prevent damage to the compressor of your air
conditioning or heat pump system. 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 message Cool On or Heat On flashes on the screen. When the safe wait time has
elapsed, the message stops flashing and the compressor turns on.
Adaptive Intelligent Recovery (AIR)
Built-in compressor protection

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NOTE: Batteries are optional (serving as backup power) only if your
thermostat is connected to 24 VAC.
Install two fresh AAA batteries when the low-battery icon
flashes on the screen. The icon appears for 60 days before the
batteries are depleted.
Replace batteries once a year, or when you will be away for
more than a month.
Most settings are stored in non-volatile (permanent) memory.
Only the clock and the day must be set if the thermostat was
without AC power or batteries.
NOTE: The low-battery icon will not appear when the batteries are
depleted if the thermostat is connected to 24 VAC.
Battery replacement
Set the System switch to Off before removing the
batteries. Otherwise, the heating/cooling system could
remain activated even when batteries are removed.

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In case of difficulty
Screen is blank. • Check circuit breaker and reset if necessary.
• Ensure the heating/cooling system is powered up.
• Ensure the furnace door is properly closed.
• Ensure two fresh AAA alkaline batteries are correctly installed.
Temperature settings cannot be
changed.
• You are setting the temperature outside its allowable range:
• Heat: 40 °F to 90 °F (4.5 °C to 32 °C).
• Cool: 50 °F to 99 °F (10 °C to 37 °C).
Cool On or Heat On is flashing. • The compressor protection delay is underway. Wait for the delay
to end (maximum of 5 minutes).
HI appears on the screen. • The ambient (measured) temperature is above 122 °F (50 °C).
LO appears on the screen. • The ambient (measured) temperature is below 32 °F (0 °C).
E1 appears on the screen. • The temperature sensor circuit is opened. Replace the thermostat.
E2 appears on the screen. • The temperature sensor circuit is shorted. Replace the thermostat.

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Customer assistance
For assistance with this product, please visit
http://yourhome.honeywell.com.
Or call Honeywell Customer Care toll-free at
1-800-468-1502.
To save time, please note your model number and
date code before calling.