Page 1
T8635L Microelectronic Communicating
Programmable Thermostat
USER’S GUIDE
1 69-1332—4
69-1332-4
Page 2
Page 3
CONTENTS
USING THIS GUIDE .......................................................................................................................................... 5
FEATURES ........................................................................................................................................................ 6
KEYBOARD AND DISPLAY DESCRIPTION .................................................................................................... 7
Keyboard ............................................................................................................................................................ 7
Display ............................................................................................................................................................... 7
ADAPTIVE INTELLIGENT RECOVERY™ CONTROL ..................................................................................... 10
Optimum Comfort and Energy Savings ……………………………………………………………………………….. 11
OPERATING YOUR THERMOSTAT ................................................................................................................. 13
Setting System and Fan Keys ............................................................................................................................ 13
Setting the System Key .................................................................................................................................. 14
Setting the Fan Key ........................................................................................................................................ 14
Setting Temporary Temperatures ....................................................................................................................... 15
Changing Temperature to Temporary Setting Until Next Schedule Period .................................................... 15
Changing and Holding Temperature Setting Indefinitely ................................................................................ 17
Changing Temperature Setting Until a Designated Day and Period (Vacation Hold) ..................................... 18
Using the (Information) Key ......................................................................................................................... 21
Displaying Outdoor Temperature .................................................................................................................... 21
3 69-1332—4
Page 4
Contents (Cont)
Displaying Current Settings ............................................................................................................................ 22
Filter Indicator .................................................................................................................................................... 23
Setting or Resetting Filter Indicator ................................................................................................................ 23
LED Indicators ................................................................................................................................................... 25
Remote Override Temperature Indicator ............................................................................................................ 25
SETTING THE CLOCK...................................................................................................................................... 26
Set Current Day and Time ................................................................................................................................. 26
Daylight Saving Time ......................................................................................................................................... 28
PROGRAMMING YOUR THERMOSTAT .......................................................................................................... 29
7-Day Program and Operation ........................................................................................................................... 29
7-Day Preprogrammed Schedule ................................................................................................................... 30
Customizing Your Own 7-Day Schedule ........................................................................................................ 31
Programming the First Day ............................................................................................................................ 32
Copying a Day ................................................................................................................................................ 37
Clearing a Program Period ............................................................................................................................. 40
TROUBLESHOOTING....................................................................................................................................... 42
WARRANTY ...................................................................................................................................................... 45
CUSTOMER ASSISTANCE ............................................................................................................................... 47
4 69-1332—4
Page 5
USING THIS GUIDE
The T8635L is a multi-functional thermostat. This means it can be used in several different ways such as single
or multi-zone applications, conventional furnaces or heat pump equipment.
The following symbols will help you identify the features that apply to your system:
– Triple layer of thermostats with the word, zoning, below. These features are available when more
than one thermostat is connected and used with the optional W8703 Damper Interface Module,
ZONING
HEAT PUMP
80
70
60
60
70
80
90
90
W8635A, B Equipment Interface Modules, or with the W8835 EnviraZone System.
– Compressor with the word, heat pump, below. These features are available when used with a
heat pump.
–Tip symbol. Look for helpful tips throughout the guide when you see this symbol.
5 69-1332—4
Page 6
FEATURES
• Adaptive Intelligent Recovery™ Control for comfort
and energy savings.
• Customize the program schedule—program your
own schedule to fit your needs.
• Temporary schedule override—set the thermostat
higher or lower for the current program schedule.
• Permanent schedule override—set the thermostat
higher or lower indefinitely.
• Vacation mode (1 to 255 days) for added comfort
and energy savings. Set the temperature higher or
lower for energy savings while on vacation. At the
same time, set the comfort level you want when
you return.
• Set the filter indicator (0, 15, 30, 60, 90, or
120 days) to remind you to change the filter.
• Information at the press of a button—use the
(information) key to see the outdoor temperature (C7089B Outdoor Temperature Sensor
optional accessory), the current setpoints, or
the filter status.
• No batteries needed—your thermostat retains the
schedule for the life of the product. You never have
to reprogram the schedule even after a power
outage. (You may need to reset the day and time
after an extended power outage.)
• Daylight Time key for quick time changes between
Daylight and Standard time.
• Backlit display for improved readability—set the
backlight feature for backlighting on demand
(press any key to activate) or continual backlighting. Ask your installer to program this feature.
• Optional outdoor temperature display—ask your
installer to install an outdoor temperature sensor to
activate this feature.
6 69-1332—4
Page 7
KEYBOARD AND DISPLAY DESCRIPTION
Keyboard
The keyboard is located behind the thermostat cover. Three frequently used keys, increase ▲ or decrease ▼
and , are located next to the display. See Fig. 1.
Display
The thermostat displays important information such as day, time, schedule period, temperature, filter information,
system and fan operation. See Fig. 2.
7 69-1332—4
Page 8
M
R
S
D
R
N
TIME / TIME
S
S
V
SETS TIME
FORWARD OR BACK
SET CURRENT
DAY/TIME
ETS CURRENT
AY AND TIME
RUN PROGRAM
ETURNS THERMOSTAT TO
ORMAL OPERATING MODE
DAY
SETS DAY OF THE WEEK
HOLD TEMP
ETS A HOLD TEMPERATURE
ETTING AND ACTIVATES
ACATION HOLD FEATURE
DAYLIGHT TIME
SELECTS STANDARD TIME
OR DAYLIGHT SAVING TIME
COPY
COPIES SETTINGS FROM ONE DAY TO
ANOTHER DAY FOR QUICKPROGRAMMING
17459A
WAKE
SET WAKE TIMES
TEMPERATURES
Run
Program
Hold Temp
AND
Set Current
Day/Time
Day
Daylight
Time
LEAVE
SET LEAVE TIMES
TEMPERATURES
Time
Copy
HEAT/COOL SETTINGS
SWITCHES BETWEEN HEAT SETPOINTS AND
COOL SETPOINTS WHILE PROGRAMMING
Wake
Heat/Cool
Settings
AND
Leave
Filter
Set Program
DIGITAL
DISPLAY
Return Sleep
System
Fan
Fig. 1. Thermostat keyboard description.
8 69-1332—4
INCREASE
RAISES TEMPERATURE SETTING
DECREASE
LOWERS TEMPERATURE SETTING
INFORMATION
DISPLAYS CURRENT HEAT/COOL
TEMPERATURE SETTING AND OUTDOO
TEMPERATURE (WHEN INSTALLED).
RETURN
SET RETURN TIMES
TEMPERATURES
SLEEP
SET SLEEP TIMES
TEMPERATURES
PROGRAM SCHEDULING
WAKE LEAVE RETURN SLEEP
ENTERS PROGRAMMING MODE
FAN
SELECTS AUTO/ON
SYSTEM
SELECTS HEAT/OFF/COOL (AUTO)
FILTER
SELECTS FILTER TIMER REMINDER
PERIOD (0, 15, 30, 60, 90, 120 DAYS)
AND
AND
Page 9
SHOWS THERMOSTAT IS
PROCESSING INFORMATION
AND WAITING TO CALL FOR
HEAT OR COOL
SHOWS SMART
RESPONSE IS CHANGING
THE TEMPERATURE
TO MEET THE
CURRENT PROGRAM
SHOWS VACATION
HOLD DURATION
SHOWS FILTER TIMER
EXPIRED (TIME TO
REPLACE FILTER)
SHOWS CURRENT
DAY OR DAYS BEING
PROGRAMMED
SHOWS CURRENT
PROGRAM PERIOD
OR PERIOD BEING
PROGRAMMED
SHOWS WHEN
THERMOSTAT
IS IN THE
PROGRAMMING
MODE
Set Program
Wait
Set Day/Time
Recovery
Hold for
Filter Days
Mon
TueWedThuFriSatSun
Leave Return Sleep
Wake
SHOWS SYSTEM ON
DAYLIGHT SAVING TIME
SHOWS
DISPLAYS
EITHER CURRENT
TIME OF DAY OR
PROGRAM TIMES
TEMPERATURE
DISPLAYED IS THE
CURRENT ROOM
TEMPERATURE
Fig. 2. Example of thermostat display.
SHOWS
THERMOSTAT
IS IN THE
SET CURRENT
DAY/TIME MODE
Temporary Setting
AM
DST
9 69-1332—4
SHOWS
TEMPERATURE
SETTING CHANGED
FOR THIS
PROGRAM
PERIOD
Room
SHOWS SMART
RESPONSE IS OFF
AND CONVENTIONAL
RECOVERY IS ON
DISPLAYS EITHER ROOM
OR SET TEMPERATURE
System
Heat
Em
Off
Cool
Auto
Fan
On
Auto
SHOWS THERMOSTAT IS
CALLING FOR THE FAN
SHOWS THERMOSTAT
TEMPERATURE IS
BEING SET REMOTELY
SHOWS TEMPERATURE
DISPLAYED IS THE CURRENT
SET TEMPERATURE
SHOWS THAT THERMOSTAT
IS CALLING FOR
HEAT OR COOL
SHOWS CURRENT
SYSTEM KEY POSITION
HEAT/OFF/COOL
SHOWS CURRENT FAN
KEY POSITION ON/AUTO
M17756
Page 10
ADAPTIVE INTELLIGENT
RECOVERY™ CONTROL
Your new thermostat is so smart, it’s almost human.
You perceive temperature from a variety of sources,
not only from the air in the room, but also from your
surrounding walls, windows and furnishings. Humans
feel differences in temperature as slight as two
degrees Fahrenheit. Common household thermometers and standard thermostats sense only air temperature, which may not reflect how hot or cold the
room actually feels to you. Your new thermostat reads
both the temperature of the wall and in the air, and
responds to temperature changes as little as one
degree Fahrenheit, so room temperature is more
likely to feel right to you and your family.
The thermostat acts like a computer. When calculating the time to turn on your heating or cooling system,
it considers air temperature, wall temperature, and the
time you want to reach the comfort temperature. After
considering these three things, Adaptive Intelligent
Recovery™ control gradually changes the temperature from the energy savings setting to the comfort
setting (for example, from a heating temperature of
62° at night to 70° in the morning).
The system runs continuously until the comfort
temperature you choose is reached without overshooting the setting. This saves energy. How do you
know when the system is in recovery? The thermostat
displays “Recovery” whenever the thermostat
activates Adaptive Intelligent Recovery™ control. See
Fig. 3. “Recovery” displays during the recovery time
from Sleep to Wake and from Leave to Return.
System
Recovery
Mon
Sleep
AM
Room
Heat
Em Heat
Fan
Auto
M14561
Fig. 3. Example of “Recovery” indication.
10 69-1332—4
Page 11
After installation or new schedule programming, your
thermostat learns from experience. Each day it
checks how closely it hit the recovery target (for
example, 70° at 6:00 AM) and adjusts the next day’s
recovery start time accordingly. After four to eight
days, the thermostat has adjusted to local weather,
your lifestyle, the construction of your home, and your
heating and cooling system.
Optimum Comfort and Energy Savings
In Fig. 4, Adaptive Intelligent Recovery™ control
starts to recover at 5:00 AM and reaches the comfort
temperature of 68° at 6:30 AM. Recovery time varies
with the starting temperature and the comfort temperature you choose.
11 69-1332—4
Page 12
At 7:00 AM System
TEMPERATURE
At 4:00 AM
Recovery Begins
Recovery
Mon
ENERGY
SAVINGS
PERIOD
Operating in Comfort Mode
At 6:00 AM
Recovery
Continues
AM
Recovery
At 5:00 AM
Recovery
Continues
AM
Recovery
Mon
System
AM
Sleep
Heat
Fan
Room
Auto
Room
Sleep
Mon
Sleep
System
Heat
Fan
Auto
1
Mon
Wake
System
Heat
Fan
Room
Auto
RECOVERY FROM ENERGY SAVINGS
TIME
AM
Room
COMFORT
PERIOD
System
Heat
Fan
Auto
THE THERMOSTAT USES THE SAME SCHEME TO RETURN GRADUALLY TO LOWER COMFORT TEMPERATURE DURING THE COOLING SEASON.
1
IF In Recovery IS DISPLAYED, PRESS TO SEE THE COMFORT SETPOINT.
M17758
Fig. 4. Explanation of Adaptive Intelligent Recovery™ control.
12 69-1332—4
Page 13
OPERATING YOUR THERMOSTAT
Your new thermostat saves energy and keeps you
comfortable at the same time. By now you may be
wondering how to program your thermostat and how
to use some more time and energy-saving features.
First, let’s look at features you’ll be using often, like
setting the System and Fan keys, how to override the
current programming mode or to hold the thermostat
at a specific temperature while you go on vacation.
You can even program the thermostat to return to
your regular programming schedule on your last day
of vacation so you are comfortable when you return
and yet save energy while you are away.
Setting System and Fan Keys
Use the System and Fan keys to change the system
and fan settings. The fan settings can be set for each
schedule period individually. The system selection is
for all the schedule periods.
CAUTION
Equipment Damage Hazard.
Can cause permanent damage to the
compressor or other equipment.
To avoid possible compressor damage, allow
the compressor to remain off for five minutes
before restarting.
To avoid possible equipment damage, do not
operate cooling when the outside temperature
is below 50°F (10°C). See equipment manufacturer instructions.
13 69-1332—4
Page 14
Setting the System Key
Press the System key until the desired
system (Heat, Off, Cool, or Auto) displays.
Heat: The thermostat controls the heating.
Off: Both the heating and cooling are off.
Cool: The thermostat controls the cooling.
Auto: The thermostat automatically changes
between heating and cooling operation,
depending on the indoor temperature.
Auto is available in zoned systems
when using the W8835 EnviraZone
ZONING
Panel. Auto is not available in zoned
systems when using the W8703 and
W8635 Zone Panels. For this case, changing any
thermostat system setting on any thermostat automatically changes the system setting in all zones. For
example, changing the zone 1 thermostat from Heat
to Cool causes all thermostats to change from Heat
to Cool.
System
Em.Ht: Emergency heat is controlled as
stage 1 heat. Cooling system is off.
Compressor is de-energized. (Available
HEAT PUMP
only with multistage heat pump.)
Setting the Fan Key
Press Fan key until the desired mode
(On or Auto) displays:
On: Fan operates continuously.
Auto: Fan operates only when heating
or cooling.
displays when the thermostat is calling
for the fan in this zone. A flashing
indicates that the thermostat is waiting
ZONING
until another zone has completed its
call for heat or cool before initiating the fan call for
this zone.
14 69-1332—4
Fan
Page 15
Setting Temporary Temperatures
You can override the current schedule period to temporarily change the temperature setting until the next schedule
period, or you can change and hold the temperature setting indefinitely. You can also change the temperature setting
until a designated day and period (for example, while you are on vacation).
Changing Temperature to Temporary Setting Until Next Schedule Period
Press increase ▲ or decrease ▼ until the desired temperature
setpoint displays.
The temporary temperature setting you select displays for
approximately three seconds. The display reads “Temporary”
until the next period begins or when you cancel the temporary
temperature setting.
While selecting a temporary setting, only the setpoint displays.
15 69-1332—4
Temporary Setting
M14563
Page 16
Press the Run Program key to cancel the temporary
temperature setting before the designated time.
Program
Run
AM
Temporary
System
Heat
Mon
Heat
Fan
Auto
M14564
After selecting a temporary setting, the display reads
“Temporary” until canceled. Example display shows
temporary heat setting of 70° at 6:00 AM.
80
70
60
60
70
If ▲ or ▼ appears under the temperature display, it means that both the heating and cooling
90
setpoints are being adjusted. Tapping the increase ▲ or decrease ▼ key changes both the heat
90
80
and cool setpoints by one degree. Press key after the desired setpoint is reached to verify
the setpoints.
16 69-1332—4
Page 17
Changing and Holding Temperature Setting Indefinitely
1. Press Hold Temp key once.
2. Press increase ▲ or decrease ▼ to change the tempera-
ture setpoint, if desired.
NOTE: The display changes from the setpoint to the
room temperature after approximately three
seconds.
Press Run Program key to cancel hold.
Hold Temp
Run
Program
17 69-1332—4
Setting
Heat
Press Hold Temp key once to display the thermostat in Hold
mode. Example display shows temporary heat setting of 60°.
System
Fan
M14565
Heat
Auto
Page 18
Changing Temperature Setting Until a Designated Day and Period (Vacation Hold)
When setting Vacation Hold at any
thermostat, all thermostats automati-
ZONING
1. Press Hold Temp key twice.
IMPORTANT
2. Press Time or Time until the desired
number of days (1 to 255
days) displays.
cally change to Vacation Hold except if
a thermostat is already set to Hold.
Hold Temp
To cancel the Vacation Hold before the
designated time, press Run Program key.
TIME
Hold for
Days
Wake
Press Hold Temp key twice to display the thermostat in Vacation
mode. Example display shows temporary heat setting of 60°.
Heat
Hold for
Days
Wake
Press the Time or Time key to select the number of vacation
days. Example display shows 18 vacation days.
Heat
18 69-1332—4
Setting
Setting
System
Heat
Fan
M14833
System
Heat
Fan
Auto
M14834
Auto
Page 19
Press Wake, Leave, Return or Sleep key to select the
period the Hold ends.
Leave Return
SleepWake
Setting
System
Heat
Hold for
Days
Return
Heat
In this example, the Hold ends after the 18
Fan
Auto
M14571
th
day at the beginning of the Return period.
4. Press increase ▲ or decrease ▼ to adjust the tempera-
ture setting, if desired.
NOTE: Only the heating temperature is used when
the System is set to Heat. Similarly, only the
cooling temperature is used when the System
is set to Cool. The thermostat uses both the
heating and cooling temperatures when the
System is set to Auto.
19 69-1332—4
Hold for
Days
Return
Press increase ▲ or decrease ▼ key to select
a new Hold temperature. Example display
shows temporary heat setting of 55°.
Heat
Setting
System
Heat
Fan
M14572
Auto
Page 20
5. Press Heat/Cool Settings key to change between heat and cool settings.
Heat/Cool
Settings
6.Press increase ▲ or decrease ▼ to adjust the temperature setting, if desired (for example, if cool is set at
84°, cooling equipment operates when the room temperature is above 84°F).
To cancel the Vacation Hold before the designated time, press Run Program key at each thermostat.
ZONING
Pressed the wrong key?
Want to start over?
Don’t worry!
You can always press
Run
Program
to return display to normal.
20 69-1332—4
Page 21
Using the (Information) Key
The (information) key provides information at your
fingertips. The sequence of key presses is:
• Outdoor temperature (if equipped).
• Current setpoint of mode in use (Heat or Cool).
• Setpoint of mode not currently in use.
Wake
AM
Tue
Room
DST
INFORMATION KEY
System
Em Heat
Fan
• Filter status.
If the filter status is expired, refer to Filter Indicator section, the sequence of key presses is:
• Filter status.
• Outdoor temperature (if equipped).
• Current setpoint of mode in use (Heat or Cool).
• Setpoint of mode not currently in use.
Displaying Outdoor Temperature
Auto
M17757
Press key once to display outdoor
temperature (if equipped).
80
70
If the filter status is expired, press
90
60
60
key twice to display outdoor temperature.
90
70
80
See Filter Indicator section for instructions
on resetting the filter indicator.
Outdoor
INFORMATION KEY
M14835
Press key once to display the outdoor temperature.
Example display shows outdoor temperature at 50°.
21 69-1332—4
Page 22
Displaying Current Settings
Press key twice to check the current temperature setpoint. Press key three times to check the temperature setpoint of the mode not currently in use.
Without outdoor temperature sensor, press key once to display current setpoint; press key
80
70
90
60
60
twice for opposite setpoint.
90
70
80
If the filter status is expired, press key
three times to check current temperature
setpoint, if equipped with outdoor sensor.
Cool
M17761
Press key twice to display current setpoint.
Example display shows cooling setpoint of 75°.
22 69-1332—4
Page 23
Filter Indicator
Your thermostat monitors the time the fan is running
and lets you know when to replace the filter, based
on the number of fan run-time days you select. Upon
expiration, the thermostat displays “Filter” and the
green LED lights (on the top right of the thermostat).
Filter
Wake
System
AM
Tue
Room
DST
Em Heat
Fan
Auto
60
60
70
hours of fan run time. For example, if the
90
80
fan is on only one-third of the time each
One fan run-time day equals twenty-four
80
70
90
day, it takes three days to deduct one
fan run-time day.
Setting or Resetting Filter Indicator
Your thermostat comes preset to a 30-day setting. To change
this setting, or reset after filter expiration:
1. Press Filter key to enter the Filter mode.
Filter
23 69-1332—4
FILTER EXPIRATION INDICATOR
Filter
Press the Filter key to display filter information.
Example display shows current fan run time set
Days
to 30 days with the filter set to expire in 5 days.
M17760
Setting
M14577
Page 24
2. Press and hold the Filter key for at least three seconds
to reset the fan run time.
Filter
Setting
Filter
3. Press Time or Time until the desired number of days displays
(0, 15, 30, 60, 90, or 120 ).
TIME
4. Press Run Program key to return to normal operation.
Run
Program
IMPORTANT
To track the time the fan is running, you must select a setting other than 0 (0 means off). If the setting is
0 days, the display always shows “0 Days; 0 Setting” when the Filter key is pressed.
24 69-1332—4
Days
M17762A
Hold down the Filter key to reset the counter.
Page 25
LED Indicators
M13375
CHECK
FILTER
Two light emitting diode (LED) indicators are located on the upper
right side of the thermostat. The LED indicators are clear until
lighted. When the right filter expiration LED indicator lights
(green), see the Filter Indication section; when the heat pump
check LED indicator lights (red), see the Troubleshooting section.
The Check LED indicates a failure detected with
the heat pump. Switch the thermostat to Em. Ht.
and contact your heat pump service company for
HEAT PUMP
assistance. Heating with Em.Ht. may be more
expensive so act quickly.
The LED indicators light on all thermostats.
ZONING
Remote OverrideTemperature Indicator
The thermostat can communicate with a variety of system
controllers. If the temperature was overridden remotely, a (▲) is
displayed and “Temporary” flashes.
25 69-1332—4
Mon
(RED) LED
AM
Temporary
Heat
(GREEN) LED
System
Heat
Fan
Auto
M17763
Page 26
SETTING THE CLOCK
Setting Current Day and Time
Seting the time and day at one thermostat automatically sets the time and day on all thermostats.
ZONING
IMPORTANT
Always press the keys with your fingertip or similar blunt tool. Sharp instruments like pens and pencil
points can damage the keyboard.
On initial power up or after an extended power loss, 1:00 PM
flashes on the display until a key is pressed.
1. Press Set Current Day/Time key.
Set Current
Day/Time
26 69-1332—4
Mon
Set Day/Time
PM
Press Set Current Day/Time key to
show information displayed.
M14580
Page 27
2. Press Day key until the current day displays.
Day
Set Day/Time
60
60
Thu = Thursday, Fri = Friday, Sat = Saturday,
90
70
80
Sun = Sunday.
Mon = Monday, Tue = Tuesday, Wed = Wednesday,
80
70
90
3. Press Time or Time key until the current time displays.
TIME
Tap the Set Current Day/Time key to advance
80
70
90
60
60
the time in one-hour increments.
90
70
80
Set Current
Day/Time
4. Press Run Program key to return to normal operation.
Run
Program
27 69-1332—4
PM
Tue
Press Day key to set the current day.
Example display shows Tuesday.
Set Day/Time
AM
Tue
Press Time or Time key to set the current time.
Example display shows 8:15 AM.
M14581
M14582
Page 28
Daylight Saving Time
NOTE: If the current time is Daylight Saving Time, press
Daylight Time key to display DST.
60
60
70
within a five minute period scrolls you through
90
80
various time options (example: one hour
Pressing Daylight Time key more than once
80
70
90
earlier or later with or without DST). Pressing
Daylight Time key six times in a five minute
period returns you to your original setting.
Daylight
Time
28 69-1332—4
Set Day/Time
AM
Tue
DST
M14583
Press Daylight Time key to set Daylight Saving Time.
Page 29
PROGRAMMING YOUR THERMOSTAT
7-Day Program and Operation
Your thermostat is 7-day programmable. 7-day programming means you can set your thermostat for four periods
(Wake, Leave, Return and Sleep) and up to eight temperatures (four Heat and four Cool) for each day of the
week. Each day can be the same or different.
Program Periods:
WAKE The program period when you want the house at a comfortable temperature when you get up and
LEAVE The program period you can set for an energy saving temperature while you are away at work or
RETURN The program period when you want the house at a comfortable temperature for activities before
SLEEP The program period you set for an energy-saving temperature while you are sleeping. This is a lower
while you get ready for work or school. (This is a higher temperature during the heating season and a
cooler temperature during the cooling season.)
school. (This is a lower temperature during heating season, and higher temperature during cooling
season) and it follows the WAKE period.
bedtime. (This is a higher temperature during the heating season and a cooler temperature during the
cooling season) and it follows the energy-saving LEAVE period.
temperature during heating season, and higher temperature during cooling season) and it follows the
RETURN period.
29 69-1332—4
Page 30
7-Day Preprogrammed Schedule
Your thermostat is preprogrammed with the schedule shown in Table 1 (same schedule for all days of the week).
You may keep this schedule or develop your own. Before starting the programming procedure, use Table 2 to
plan your schedule.
Instructions:
1. Write the time you want for each program period.
2. Write the heating and cooling temperatures you want for each period.
3. Draw a circle around the fan operation you desire for each period.
Table 1. 7-Day Preprogrammed Schedule.
WAKE LEAVE RETURN SLEEP
ALL DAYS TIME 6:00 AM
FAN AUTO
H 70 (21) C 78 (2.5)
TIME 8:00 AM
FAN AUTO
H 62 (16.5) C 85 (29.5)
30 69-1332—4
TIME 6:00 PM
FAN AUTO
H 70 (21) C 78 (25.5)
TIME 10:00 PM
FAN AUTO
H 62 (16.5) C 82 (28)
Page 31
Customizing Your Own 7-Day Schedule
Table 2. Your 7-Day Schedule.
WAKE LEAVE RETURN SLEEP
SUNDAY TIME
FAN AUTO ON
H C
MONDAY TIME
FAN AUTO ON
H C
TUESDAY TIME
FAN AUTO ON
H C
WEDNESDAY TIME
FAN AUTO ON
H C
THURSDAY TIME
FAN AUTO ON
H C
FRIDAY TIME
FAN AUTO ON
H C
SATURDAY TIME
FAN AUTO ON
H C
TIME
FAN AUTO ON
H C
TIME
FAN AUTO ON
H C
TIME
FAN AUTO ON
H C
TIME
FAN AUTO ON
H C
TIME
FAN AUTO ON
H C
TIME
FAN AUTO ON
H C
TIME
FAN AUTO ON
H C
TIME
FAN AUTO ON
H C
TIME
FAN AUTO ON
H C
TIME
FAN AUTO ON
H C
TIME
FAN AUTO ON
H C
TIME
FAN AUTO ON
H C
TIME
FAN AUTO ON
H C
TIME
FAN AUTO ON
H C
31 69-1332—4
TIME
FAN AUTO ON
H C
TIME
FAN AUTO ON
H C
TIME
FAN AUTO ON
H C
TIME
FAN AUTO ON
H C
TIME
FAN AUTO ON
H C
TIME
FAN AUTO ON
H C
TIME
FAN AUTO ON
H C
Page 32
60
70
Don t worry! Your thermostat retains the schedule (preprogrammed or your own) for the life of the
90
80
product. The time and day information is retained for a minimum of twenty minutes during a
About Power Outages
80
70
90
60
power outage. After a longer power outage, you may need to set the current time and day ( 1:00
PM flashes on the display), but the schedule is retained.
Programming the First Day
To modify the preprogrammed schedule, start by programming the Wake time and temperature and fan operation
for any one day.
32 69-1332—4
Page 33
1. Press the Wake key.
Wake
Set Program
AM
Setting
System
Heat
2. Press Day key until the desired day displays.
Tue
Wake
Heat
Press the Wake key to enter the program mode. Example
display shows 6:00 AM on Tuesday with Heat set to 70°F.
Day
Set Program
AM
Setting
Mon
Wake
Heat
Press Day key to select the day to program. Example
display shows Monday is selected and ready to program.
33 69-1332—4
Fan
M14586
System
Fan
M14588
Auto
Heat
Auto
Page 34
3. Press Time or Time key until the desired Wake
time displays.
TIME
The program times are in fifteen-minute intervals;
80
70
90
60
60
for example, 8:00, 8:15, 8:30.
90
70
80
Set Program
AM
Mon
Wake
Press the Time or Time key to select the
time the Wake period will begin. Example display
Heat
shows the Wake period will begin at 6:30 AM.
Setting
System
Fan
M14589
Heat
Auto
4. Press increase ▲ or decrease ▼ key until the desired
Wake temperature displays.
80
70
90
60
60
The setpoint temperature range is 40 to 90°F
90
70
80
(4 to 32°C) for heating and 55 to 99°F
(13 to 37°C) for cooling.
34 69-1332—4
Set Program
Setting
AM
Mon
Wake
Heat
Press increase ▲ or decrease ▼ key to select the
temperature for the Wake period. Example display
shows the heating Wake period set for 68°.
System
Fan
M14590
Heat
Auto
Page 35
5. Press Fan key to modify fan operation. Selecting Auto means the fan runs only when the
heating or cooling equipment is operating. Selecting On means the fan runs continuously
for the entire schedule period.
Fan
6. Press Heat/Cool Settings key to make selections for the opposite system setting (either
Heat or Cool).
Set Program
AM
Mon
Wake
Press Heat/Cool Settings key to select the cooling system
(if you previously set the heating temperature). The
current setting displays. Example display shows
the cooling system previously set for 78°.
35 69-1332—4
Setting
Cool
Heat/Cool
Settings
System
Fan
M14591
Heat
Auto
Page 36
7. Press increase ▲ or decrease ▼ key until the desired
temperature setpoint displays.
Set Program
AM
Setting
System
Heat
Mon
Wake
Press increase ▲ or decrease ▼ to select the
cooling Wake temperature. Example display
Cool
shows the cooling Wake period set for 76°.
8. Press Leave, Return or Sleep and repeat steps 3 through 6 to program the entire day. The day (first day of
a 7-day schedule) is now programmed.
Leave Return
Sleep
IMPORTANT
Repeat steps 1 through 7 for each day of the week that has a different schedule from the first day. Or
refer to Copying a Day section to copy any programmed day to another day.
9. Press Run Program key to return to normal operation.
36 69-1332—4
Run
Program
Fan
Auto
M14592
Page 37
Copying a Day
80
70
The thermostat must be in the program mode to use the copy feature. Go to step 2 if the thermostat is
90
60
60
90
already in the program mode (set program displays in the upper left corner).
70
80
1. Press Wake, Leave, Return or Sleep key to enter program mode.
2. Press Day key to select the day to copy from.
Day
Mon
Wake
37 69-1332—4
Leave
Set Program
Return
SleepWake
Setting
AM
Heat
Press Day key to select the day schedule to copy.
Example display shows the thermostat in program
mode with Monday ready to be copied.
System
Fan
M14590
Heat
Auto
Page 38
3. Press Copy key.
Copy
4. Press Day key until the day to be copied to is displayed.
Day
38 69-1332—4
Mon
M14594
Press Copy key to copy a day schedule into memory. Example
display shows Monday schedule was copied into memory.
Mon Wed
M14595
Press Day key again to select the day to copy to.
Example display shows Monday and Wednesday.
Because Monday was already selected, Monday
schedule will be copied to Wednesday.
Page 39
5. Press Copy key.
6
Copy
NOTE: “donE” displays for two seconds before the
normal display returns.
Press the Copy key again to complete the copy command.
Example display shows “donE”. Monday schedule was
successfully copied to Wednesday (Monday and Wednesday
6. Repeat steps, as necessary, for all the periods and days desired.
M1459
now have the same schedule).
7. Press Run Program key to return to normal operation.
39 69-1332—4
Run
Program
Page 40
Clearing a Program Period
The thermostat must be in the program mode
80
70
90
60
60
1. Press Leave, Return or Sleep key to enter program
to use the clear feature. Go to step 2 if the thermo-
90
70
80
stat is already in the program mode
(Set Program displays in upper left corner).
mode.
Leave
Return
Sleep
Set Program
Setting
AM
Mon
Leave
Press Leave, Return, or Sleep to enter the
program mode. Example display shows 8:00 AM on
Monday in the Leave period with Heat set for 62° .
Heat
System
Fan
M14597
Heat
On
2. Press Day key until the desired day displays.
Day
Set Program
Setting
AM
Sat
Leave
Press Day key to select the day to begin clearing
the periods. Example display shows Saturday is selected
Heat
40 69-1332—4
System
Fan
M14598
Heat
On
Page 41
3. Press and hold Leave, Return or Sleep key until the start
time and temperature setting are cleared (approximately
three seconds).
Leave
Return Sleep
Set Program
Setting
NOTE: Wake cannot be cleared.
You do not have to program a replacement time for the remaining periods; for example, Wake and
80
70
90
60
60
Sleep. If you clear only the Leave and Return periods for Saturday (or any day), the thermostat
90
70
80
remains in the Wake period for all of Saturday until the Sleep period.
4. Repeat steps, as necessary, for all the periods to be cleared.
5. Press Run Program key to return to normal operation.
41 69-1332—4
Run
Program
Sat
Leave
Heat
Press and hold Leave, Return or Sleep key to
clear the period for that day. Example display
shows Saturday Leave period cleared.
M14599
Page 42
TROUBLESHOOTING
Symptom Possible Cause Action
Display does not come
on.
Temperature setting
does not change
(Example: cannot set
the heating higher or the
cooling lower).
Heating does not come
on.
Thermostat is not being powered. Check if the thermostat is mounted and latched on the
The upper or lower temperature
limits were reached.
No power to the thermostat.
System selection is not set to
Heat. Heating setpoint is below
room temperature.
wallplate—mount and latch the thermostat on the wallplate.
Check if the circuit breaker is tripped—reset the circuit
breaker.
Check if the fuse at the fuse box is blown—replace the fuse.
Check if the system switch at the equipment is in the Off
position—set to the On position.
Check that the temperature setpoints are:
Heating: 40 to 90°F (4 to 32°C)
Cooling: 55 to 99°F (13 to 37°C).
Check that setpoint is above room temperature.
Check if the circuit breaker is tripped—reset the circuit
breaker.
Check if the fuse at your fuse box is blown—replace the fuse.
Check if the System switch at the equipment is in the Off
position—set to the On position.
Wait five minutes for the system to respond (thermostat
displays “ Wait”).
Set System selection to Heat.
42 69-1332—4
continued
Page 43
Troubleshooting (Cont)
Symptom Possible Cause Action
Cooling does not come
on.
System on indicator—
for heat, for
cool— is lit, but no warm
or cool air is coming from
the registers.
“Filter” is displayed and
the green LED is lit.
No power to the thermostat.
System selection is not set to
Cool. Cooling setpoint is above
room temperature.
Heating/cooling equipment turns
on the fan when the equipment
has reached the preset time or
temperature.
Filter expired. Refer to the Filter Indicator section.
Check that setpoint is below room temperature.
Check if the circuit breaker is tripped—reset the circuit
breaker.
Check if the fuse at the fuse box is blown—replace the fuse.
Check if the System switch at the equipment is in the Off
position—set to the On position.
Wait five minutes for the system to respond (thermostat
displays “ Wait”).
Set System selection to Cool.
Wait a minute after seeing the or and then check the
registers.
The red LED is lit. The heat pump signaled the
thermostat to indicate a problem.
Move the System switch to Em.Ht setting (multistage heat
pump only). See Heat Pump Operating Instructions or call
your local heat pump dealer for assistance.
continued
43 69-1332—4
Page 44
Troubleshooting (Cont)
Symptom Possible Cause Action
Outdoor temperature
not displayed or is
incorrect.
1 COM, 2 COM,
or 3 COM is displayed.
is flashing and there is
no air coming from the
register.
Heat or cool turns on
before programmed
time.
Installer did not activate this
option.
Outdoor sensor is connected
incorrectly.
The thermostat is unable to
communicate with the
equipment interface module
located at the furnace.
When using the thermostat in
zoning applications, the
thermostat must wait for all
other zones to end their call for
heat or cool before the fan
request in this zone is honored.
Adaptive Intelligent
Recovery™ control is on.
Contact installer or service technician.
Turn the power off and then on to your furnace. If the problem
persists, call your local heating and air conditioning dealer for
assistance.
Wait until all other zone heat or cool cycles are complete.
Adaptive Intelligent Recovery™ control brings the heat or cool
on early to meet the temperature set for the programmed
period. See Adaptive Intelligent Recovery™ control section. To
disable Adaptive Intelligent Recovery™ control, contact your
local Heating and Air Conditioning contractor.
44 69-1332—4
Page 45
WARRANTY
Honeywell warrants this product, excluding battery, to be free from defects in the workmanship or materials, under normal use and service, for a
period of one (1) year from the date of purchase by the consumer. If, at any time during the warranty period, the product is defective or malfunctions,
Honeywell shall repair or replace it (at Honeywell’s option) within a reasonable period of time.
If the product is defective,
(i) return it, with a bill of sale or other dated proof of purchase, to the retailer from which you purchased it, or
(ii) package it carefully, along with proof of purchase (including date of purchase) and a short description of the malfunction, and mail it, postage
prepaid, to the following address:
Honeywell Return Goods
Dock 4 MN10-3860
1885 Douglas Drive North
Golden Valley, MN 55422
This warranty does not cover removal or reinstallation costs. This warranty shall not apply if it is shown by Honeywell that the defect or malfunction
was caused by damage which occurred while the product was in the possession of a consumer.
Honeywell’s sole responsibility shall be to repair or replace the product within the terms stated above. HONEYWELL SHALL NOT BE LIABLE FOR
ANY LOSS OR DAMAGE OF ANY KIND, INCLUDING ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING, DIRECTLY OR
INDIRECTLY, FROM ANY BREACH OF ANY WARRANTY, EXPRESS OR IMPLIED, OR ANY OTHER FAILURE OF THIS PRODUCT. Some states
do not allow the exclusion or limitation of incidental or consequential damages, so this limitation may not apply to you.
45 69-1332—4
Page 46
Warranty (Cont)
THIS WARRANTY IS THE ONLY EXPRESS WARRANTY HONEYWELL MAKES ON THIS PRODUCT. THE DURATION OF ANY IMPLIED
WARRANTIES, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, IS HEREBY LIMITED
TO THE ONE YEAR DURATION OF THIS WARRANTY. Some states do not allow limitations on how long an implied warranty lasts, so the above
limitation may not apply to you.
This warranty gives you specific legal rights, and you may have other rights which vary from state to state.
If you have any questions concerning this warranty, please write our Honeywell Customer Relations, 1985 Douglas Drive North, Golden Valley, MN
55422. In Canada, write Retail Products ON15-02H, Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9.
46 69-1332—4
Page 47
CUSTOMER ASSISTANCE
After reading this guide, if you have any questions about the operation of your thermostat, please visit the
Honeywell website at www.honeywell.com/yourhome. For service, contact your local heating and cooling
contractor.
47 69-1332—4
Page 48
Automation and Control Solutions
Honeywell International, Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
Honeywell Limited-Honeywell Limitée
35 Dynamic Drive
Scarborough, Ontario
M1V 4Z9
69-1332—4 G.H. Rev. 02-03
Printed in U.S.A. on recycled
paper containing at least 10%
post-consumer paper fibers.
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