Honeywell Home AQ12C20 User manual

Package Includes:
• T6 Pro Hydronic Programmable
Thermostat
• Floor sensor (model AQ12C20)
• UWP™ Mounting System
• Decorative Cover Plate
• Screws and anchors
• 2 AA Batteries
• Thermostat literature
T6 Pro Hydronic
Programmable Thermostat
TH6100AF2004
User Guide
ProSeries
Thermostat controls
• System status
information
Heat On/Recovery
• Schedule information
Following time based
schedule
• Actual time
• Mode
Select system mode
Heat/Off
• Menu
Press to display options.
Start here to set a
program schedule
• Indoor temperature
setpoint
Press + or – to change
temperature setting
• Actual indoor
temperature
• Temperature/
Navigation buttons
Press to increase or
decrease temperature
setpoint and to
navigate menus and
menu options
The screen will wake up by pressing any of the five buttons. If powered by the C wire, the screen stays lit for 45 seconds
after you complete changes. If powered by battery only, the screen stays lit for 8 seconds. Depending on how your
thermostat was installed, the screen light may always be on.

2
Temperature control modes
Your T6 Pro Hydronic Programmable Thermostat can be set to operate in one
of 3 different control modes. These settings determine which temperature is
measured, controlled and displayed on the thermostat home screen. Each
thermostat in your home can be set to a different control mode. Please ask your
local heating professional which control mode is used for you to better control the
Thermostat.
A, AF mode; main screen
F mode; main screen
A mode (Air temperature only): Controls and
displays the ambient air temperature only.
F mode (Floor temperature only): Controls
and displays the floor temperature only using
an external floor temperature sensor. This
control mode is typically used in areas such as
bathrooms where floor temperature could be
scheduled to be warm only during occupied,
morning and evening periods.
• Actual floor temperature is indicated
by “FLR” text above the actual floor
temperature value.
• Floor temperature setpoint is not
displayed until you press or for
setting it.
• Actual ambient air temperature could also
be displayed in the thermostat MENU/
TEMP.
AF mode (both Air and Floor temperatures):
Controls and displays the ambient air
temperature as well as maintains the floor
temperature within desired floor temperature
limits using an external floor temperature
sensor. Setting the minimum and maximum
floor temperature limits is done by your local
heating professional and is a way for you to
enhance the comfort and to protect your floor
covering at the same time.
• Minimum floor temperature limit will
override the air temperature in this mode,
and if set too high, may overheat the
room. Please contact your installer if this
occurs.
• Actual floor temperature could also be
displayed in the thermostat MENU/
TEMP.
Temperatures menu
Back
Read before installing

3
System operation settings
1 Press the Mode button to cycle to the next
available System mode.
2 Cycle through the modes until the required
System mode is displayed and leave it to
activate.
System modes:
‒Heat
‒Off
Set the time and date
Time
1 Press Menu on your thermostat.
2 Press or to go to TIME. Press Select.
3 Press or to choose between 12 or 24 hour.
Press Select.
4 Use or to adjust the hour. Press Select.
5 Use or to adjust the minutes. Press Select
to exit Time menu.
Date
1 If previously setting time, continue to Step
2. If at the Home screen, press Menu on your
thermostat.
2 Press or to go to DATE. Press Select.
3 Use or to adjust year. Press Select.
4 Use the or to adjust month. Press Select.
5 Use the or to adjust day. Press Select to
save and exit Date menu.

4
Program schedule
To adjust program schedules
You can program four time periods each day, with different settings for weekdays
and weekends. We recommend the pre-sets (shown in the table below), since they
can reduce your heating expenses.
Wake - Set to the time you wake up and the
temperature you want during the morning, until
you leave for the day.
Away - Set to the time you leave home and the
temperature you want while you are away (usually
an energy-saving level).
Home - Set to the time you return home and the
temperature you want during the evening, until
bedtime.
Sleep - Set to the time you go to bed and the
temperature you want overnight (usually an
energy-saving level).
NOTE: To temporarily or permanently override any
of the above program schedules, see page 5.
Depending on which temperature control mode the thermostat is configured
for (see page 2), you will be programing either air or floor temperature. Floor
temperature will be indicated with FLR text above the actual temperature value.
1 Press Menu on your thermostat.
2 PROG is displayed. Press Select. Then ON
is displayed. (If you do not want to use a
schedule, press or to display OFF. Press
Select.) Press Select.
3 Press or to select day or set of days to
edit. Press Select.
4 Press or to select a schedule period to
edit (Wake, Away, Home, and Sleep). Press
Select.
5 ON is displayed. Press Select to keep the
schedule period on. Or press and then Select
to turn off the schedule period.
6 Time starts blinking. Press or to adjust
the schedule period start time. Press Select.
7 Temperature starts blinking. Press or to
adjust the “Heat” setpoint temperature. Press
Select.
8 Repeat steps 4 through 7 for the remaining
schedule periods.
9 Press Home when you’re finished to save and
return to the home screen.
10 Schedule can be adjusted and turned ON or
OFF by returning to Menu and following the
steps provided above.
Air
Temperature
(A mode/
AF mode)
Floor
Temperature
(F mode)
Wake
(6:00 am)70 °82°
Away
(8:00 am)62 °68 °
Home
(6:00 pm)70 °82°
Sleep
(10:00
pm)62 °68 °

5
Program schedule override (permanent)
Program schedule override (temporary)
1 Press or to adjust the temperature.
2 Once at the desired setpoint temperature,
no further action is needed. The new
setpoint temperature will be held until the
next scheduled time period begins. For more
information on schedule time periods, see
“Program schedule” on page 4.
3 To cancel the Temporary Hold, Press or
and then press Cancel.
1 Press or to adjust the temperature.
2 TEMPORARY HOLD is displayed and
the setpoint temperature flashes. While
it’s flashing, press Hold (Mode) button to
change to Permanent Hold.
3 To cancel the Permanent Hold, press or
and then press Cancel.
NOTE: Depending on which temperature
control mode the thermostat is configured for
(see page 2), you will be adjusting either
air or floor temperature. Floor temperature will
be indicated with FLR text above the actual
temperature value. Floor temperature setpoint
is hidden on home screen in this case and will
be displayed again by pressing or .
Hold

6
Vacation program schedule override (temporary)
Vacation overrides the current program schedule for a
longer period of time. You might use this feature when you
know you’ll be away for awhile.
1 Press Menu on your thermostat.
2 Press or to go to VACA. Press Select. Days number
starts blinking.
3 Press or to set the number of days you want the new
temperature setpoint to override your program schedule.
Press Select. Temperature setpoint starts blinking.
4 Press or to adjust the temperature setpoint for these
days. Press Select to activate your vacation schedule and
return to the thermostat home screen.
NOTES:
• The active vacation schedule is indicated via VACA
above the temperature displayed on the thermostat
home screen.
• After vacation period ends, the thermostat will follow
your regular program schedule.
• To return back to your normal program schedule
before the vacation schedule ends, press Cancel on the
thermostat home screen.
ECO (Economy) mode
If your thermostat is configured to operate in AF mode (see
page 2) and the program schedule is followed, you can
disable the minimum floor temperature limits set by your
local heating professional during away and sleep periods.
Depending on your heating system installation and floor
type used, disabling the minimum floor temperature limit
setting can reduce your energy bills during times when
comfort is not required (Away and Sleep periods). Your floor
covering and system remains protected as the thermostat
keeps controlling maximum floor temperature limit and
minimum freeze protection temperature all the time.
1 Press Menu on your thermostat.
2 Press or to go to ECO. Press Select.
3 Press or to turn Eco mode ON or OFF. Press Select.
NOTE: Eco mode is available in thermostat menu only
if thermostat is configured for AF control mode and is
disabled (OFF) by default.
Home
Select
Home
Back Select
Home
Back Select
Heat
Home
Select

7
Setting degrees Fahrenheit (F) or Celcius (C)
1 Press Menu.
2 Press or to go to F / C. Press Select.
3 Press or to select For C. Then press
Select.
4 Press Home to return to the home screen.
Adaptive Intelligent Recovery
Over time, the Resideo T6 Pro Thermostat “learns” how long it takes your system
to reach the temperature you want. It turns on the heating system earlier to make
sure you’re comfortable at the time you expect.
Adjusting keypad lockout
1 Press Menu on the thermostat.
2 Press or to go to LOCK. Press Select.
3 Press or to go to OFF, PART, or ON, and then press Select.
OFF: Unlocked, and full access allowed.
PART: Partial lockout, allowing only the temperature to be changed.
ON: No access allowed.
4 To unlock the keypad, press the CENTER button and then enter the password
“1234”. To enter the password, press or to change the first digit of the
number. Then press Select. Repeat this process to enter the second through
fourth digits of the number. Once all four numbers have been entered, press
Select again.
5 This will unlock the keypad.
6 If the code is incorrect, the screen will flash the lines "--".
7 Press Back to go back a step to enter the correct number and press Select.
NOTE: On some models, the keypad lockout setting is only available in the
installer menu and not available in the user menu.

8
Batteries are optional (to provide backup
power) if your thermostat was wired to run on
AC power when installed. If your thermostat
was not wired to run on AC power, then
batteries are required.
Install fresh batteries immediately when the
low battery icon appears. The icon appears
about two months before the batteries are
depleted.
Even if the low battery icon does not appear,
you should replace batteries once a year, or
before leaving home for more than a month.
If batteries are inserted within two minutes, the
time and day will not have to be reset. All other
settings are permanently stored in memory,
and do not require battery power.
NOTE: When replacing batteries, alkaline
batteries are recommended.
Battery replacement
Insert fresh alkaline AA
batteries and reinstall
thermostat.
When the low battery
warning appears, press
gently to loosen the
thermostat and then
carefully pull it from the
wall mount.

9
Alerts
If there is an alert or reminder, the alert icon
appears on the Home screen.
Low Battery Warning
1 The batteries need to be replaced when
BATT, the alert icon , and the battery icon
are displayed on the Home screen.
2 When the battery power is very low, the
thermostat’s backlight is disabled to save
battery power.
3 When battery power is critically low, only
BATT, the alert icon , and the battery icon
are displayed.
Heat
Home
Back
Snoozing and clearing alerts or
reminders*
1 Press Menu, and then press until display
shows ALRT.
2 Press Select to display which alert(s) are
present.
3 The word SNZE (SNOOZE) appears.
4 Press Select again to snooze the reminder for
7 days.
5 To clear the alert, press Select, and then
press to go to CLER (Clear).
6 Press Select to clear the reminder.
* Some alerts cannot be snoozed or cleared.
Please call your local heating professional if
this occurs. The system may require service.

10
Troubleshooting
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 for heating system is on.
• Make sure fresh AA alkaline batteries are correctly installed
(see page 8).
Heating
system does
not respond
• Press Mode button to set system Heat (see page 3).
Make sure the desired temperature is set higher than the
inside temperature.
• Check circuit breaker and reset if necessary.
• Make sure power switch for heating system is on.
• Wait 5 minutes for the system to respond.
Temperature
settings do
not change
Make sure heating temperature is set to an acceptable range:
• Heat: 40 °F to 90 °F (4.5 °C to 32.0 °C)
Electrical ratings
Terminal Voltage (50 Hz/60 Hz) Running Current
WHeating 20 VAC - 30 VAC 0.0 A - 1.0 A