Honeywell T8665A Thermostat User Manual

CONTENTS

USING THIS GUIDE ..........................................................................................................................................

FEATURES ........................................................................................................................................................

KEYBOARD AND DISPLAY DESCRIPTION ....................................................................................................

Keyboard............................................................................................................................................................

Display ...............................................................................................................................................................

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

Replacing the Batteries ...................................................................................................................................... 21

69-1536–3

Contents (Cont)

Using the

(Information) Key ......................................................................................................................... 23

Display Current Setting................................................................................................................................. 23

Display or Reset Filter Timer Settings .......................................................................................................... 24

SETTING THE CLOCK...................................................................................................................................... 25

Set Current Day and Time ................................................................................................................................. 25

Daylight Saving Time ......................................................................................................................................... 27

PROGRAMMING YOUR THERMOSTAT .......................................................................................................... 28

-Day Program and Operation ........................................................................................................................... 28

7-Day Preprogrammed Schedule ................................................................................................................. 29

Customizing Your Own 7-Day Schedule....................................................................................................... 30

Programming the First Day........................................................................................................................... 31

Copying a Day .............................................................................................................................................. 36

Clearing a Program Period ........................................................................................................................... 39

TROUBLESHOOTING....................................................................................................................................... 41

WARRANTY ...................................................................................................................................................... 43

CUSTOMER ASSISTANCE ............................................................................................................................... 45

69-1536–3

USING THIS GUIDE

The T8665A is a multi-functional thermostat. This means it can be used in single or multi-zone applications.

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 used with the W8665E RF Zone Panel.

ZONING

Tip symbol. Look for helpful tips throughout the guide when you see this symbol.

69-1536–3

FEATURES

•

Adaptive Intelligent Recovery Control for comfort

and energy savings.

•

Information at the press of a button—use the

(information) key to see the current setpoints.

Daylight Time key for quick time changes between

Daylight and Standard time.

Backlit display for improved readability – backlight-

ing on demand (press any key to activate).

Programmable Fan – your thermostat can activate

the fan in any programming period for improved air

circulation and air cleaning when a Honeywell

wholehouse air cleaner is installed.

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.

69-1536–3

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, system and fan

operation. See Fig. 2.

69-1536–3

TIME

/ TIME

WAKE

SET WAKE TIMES AND

TEMPERATURES

LEAVE

SET LEAVE TIMES AND

TEMPERATURES

DIGITAL

DISPLAY

INCREASE

RAISES TEMPERATURE SETTING

SETS TIME

FORWARD OR BACK

SET CURRENT

DAY/TIME

DECREASE

LOWERS TEMPERATURE SETTING

SETS CURRENT

DAY AND TIME

INFORMATION

DISPLAYS CURRENT HEAT/COOL

TEMPERATURE SETTING

RUN PROGRAM

RETURNS THERMOSTAT TO

NORMAL OPERATING MODE

RETURN

SET RETURN TIMES AND

TEMPERATURES

Time

Set Program

Leave

DAY

SETS DAY OF THE WEEK

Run

Set Current

Wake

Return

Sleep

Fan

SLEEP

SET SLEEP TIMES AND

TEMPERATURES

Program

Day/Time

HOLD TEMP

Heat/Cool

Settings

Hold Temp

Day

System

SETS A HOLD TEMPERATURE

SETTING AND ACTIVATES

VACATION HOLD FEATURE

PROGRAM SCHEDULING

WAKE LEAVE RETURN SLEEP

ENTERS PROGRAMMING MODE

Daylight

Time

Copy

FAN

DAYLIGHT TIME

SELECTS AUTO/ON

SELECTS STANDARD TIME

OR DAYLIGHT SAVING TIME

SYSTEM

SELECTS HEAT/OFF/COOL (AUTO)

COPY

COPIES SETTINGS FROM ONE DAY TO

HEAT/COOL SETTINGS

SWITCHES BETWEEN HEAT SETPOINTS AND

COOL SETPOINTS WHILE PROGRAMMING

ANOTHER DAY FOR QUICK PROGRAMMING

M20146

Fig. 1. Thermostat keyboard description.

69-1536–3

SHOWS THERMOSTAT IS

PROCESSING INFORMATION

AND WAITING TO CALL FOR

HEAT OR COOL

SHOWS WHEN

THERMOSTAT

IS IN THE

PROGRAMMING

MODE

SHOWS

THERMOSTAT

IS IN THE

SET CURRENT

DAY/TIME MODE

SHOWS

SHOWS TEMPERATURE

DISPLAYED IS THE CURRENT

SET TEMPERATURE

TEMPERATURE

SETTING CHANGED

FOR THIS

PROGRAM

PERIOD

SHOWS THAT THERMOSTAT

IS CALLING FOR

SHOWS ADAPTIVE

INTELLIGENT RECOVERY

IS CHANGING THE

TEMPERATURE TO MEET

THE CURRENT

System

Wait Set Program Set Day/Time

Temporary Setting

Heat

SHOWS CURRENT

SYSTEM KEY POSITION

HEAT/OFF/COOL

PROGRAM

Recovery

Hold for

Off

Cool

Auto

SHOWS VACATION

HOLD DURATION

Days

SHOWS CURRENT FAN

KEY POSITION ON/AUTO

SHOWS FILTER

TIMER STATUS

Filter

Fan

MonTueWedThuFriSatSun

Room

Wake Leave Return Sleep DST

Auto

SHOWS CURRENT

DAY OR DAYS BEING

PROGRAMMED

SHOWS SYSTEM ON

DAYLIGHT SAVING TIME

SHOWS SMART

RESPONSE IS OFF

AND CONVENTIONAL

RECOVERY IS ON

SHOWS THERMOSTAT IS

CALLING FOR THE FAN

SHOWS

TEMPERATURE

EITHER CURRENT DISPLAYED IS THE

SHOWS CURRENT

PROGRAM PERIOD

OR PERIOD BEING

PROGRAMMED

DISPLAYS

TIME OF DAY OR

PROGRAM TIMES

CURRENT ROOM

TEMPERATURE

DISPLAYS EITHER ROOM

OR SET TEMPERATURE

M20886

Fig. 2. Example of thermostat display.

69-1536–3

Recovery control gradually changes the tempera-

ture from the energy savings setting to the comfort

setting (for example, from a heating temperature of

ADAPTIVE INTELLIGENT

RECOVERY CONTROL

62° at night to 70° in the morning).

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 thermo-

meters and standard thermostats sense only air temp-

erature, 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 system runs 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.

So, “Recovery” displays during the recovery time from

Sleep to Wake and from Leave to Return.

System

Heat

Recovery

Mon

Fan

The thermostat acts like a computer. When calculat-

ing 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

Room

Heat

Sleep

Auto

M20148

Fig. 3. Example of “Recovery” indication.

69-1536–3

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 temp-

erature you choose.

69-1536–3

At 7:00 AM System

Operating in Comfort Mode

System

Heat

At 6:00 AM

Recovery

Continues

Fan

Mon

Wake

Room

Auto

System

Heat

Recovery

Fan

At 5:00 AM

Recovery

Continues

Mon

Room

Sleep

Auto

System

Heat

Recovery

Fan

Mon

Room

At 4:00 AM

Recovery Begins

Sleep

Auto

System

Heat

Recovery

Fan

Mon

Room

Sleep

Auto

ENERGY

SAVINGS

PERIOD

COMFORT

PERIOD

RECOVERY FROM ENERGY SAVINGS

TIME

THE THERMOSTAT USES THE SAME SCHEME TO RETURN GRADUALLY TO LOWER COMFORT TEMPERATURE DURING THE COOLING SEASON.

M20149

IF Recovery IS DISPLAYED, PRESS

TO SEE THE COMFORT SETPOINT.

Fig. 4. Explanation of Adaptive Intelligent Recovery control.

69-1536–3

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.

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.

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.

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 manu-

facturer instructions.

69-1536–3

Setting the System Key

Press the System key until the desired

system (Heat, Off, Cool, or Auto) displays.

Setting the Fan Key

Press Fan key until the desired mode

(On or Auto) displays:

System

Fan

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.

On: Fan operates continuously.

Auto: Fan operates only when heating

or cooling.

displays when the thermostat is

calling for the fan in this zone.

NOTE: The thermostat may delay

turning on the fan until another zone

has completed its call for heat or cool

Thermostat will satisfy system demand

on a first call basis. For example, if

zone 2 (any zone) is calling for heating

ZONING

before initiating the fan call for this zone.

ZONING

and then zone 1 (any zone) asks for

cool – the system will satisfy zone 2

before turning on the cool for zone 1.

69-1536–3

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.

Temporary Setting

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.

M14563

While selecting a temporary setting, only the setpoint displays.

69-1536–3

Press the Run Program key to cancel the temporary

temperature setting before the designated time.

System

Heat

Temporary

Run

Program

Fan

Mon

Heat

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.

If ▲ or ▲ appears under the temperature display, it means that both the heating and cooling

setpoints are being adjusted. Tapping the increase ▲ or decrease ▲ key changes both the heat

and cool setpoints by one degree. Press

the setpoints.

key after the desired setpoint is reached to verify

69-1536–3

Changing and Holding Temperature Setting Indefinitely

1. Press Hold Temp key once.

Hold Temp

System

Heat

Setting

. Press increase ▲ or decrease ▲ to change the tempera-

ture setpoint, if desired.

Fan

Heat

Auto

NOTE: The display changes from the setpoint to the

room temperature after approximately three

seconds.

M14565

Press Hold Temp key once to display the thermostat in Hold

mode. Example display shows temporary heat setting of 60°.

Run

Program

Press Run Program key to cancel hold.

69-1536–3

Changing Temperature Setting Until a Designated Day and Period (Vacation Hold)

When setting Vacation Hold in a zone

system, set all thermostats indepen-

dently to Vacation Hold.

System

Heat

Setting

ZONING

Hold for

Wake

Days

Fan

. Press Hold Temp key twice. Hold Temp

Heat

Auto

M14833

Press Hold Temp key twice to display the thermostat in Vacation

mode. Example display shows temporary heat setting of 60°.

IMPORTANT

To cancel the Vacation Hold before the

designated time, press Run Program key.

System

Heat

Setting

. Press Time

number of days (1 to 255

days) displays.

or Time

until the desired

Hold for

Days

Fan

TIME

Wake

Heat

Auto

M14834

Press the Time

or Time

key to select the number of vacation

days. Example display shows 18 vacation days.

69-1536–3

Press Wake, Leave, Return or Sleep key to select the

period the Hold ends.

System

Heat

Setting

Wake

Leave

Return

Sleep

Hold for

Days

Fan

Return

Heat

Auto

M14571

In this example, the Hold ends after the 18

day at the beginning of the Return period.

. Press increase ▲ or decrease ▲ to adjust the tempera-

ture setting, if desired.

System

Heat

Setting

Hold for

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.

Days

Fan

Return

Heat

Auto

M14572

Press increase ▲ or decrease ▲ key to select

a new Hold temperature. Example display

shows temporary heat setting of 55

69-1536–3

Heat/Cool

Settings

5. Press Heat/Cool Settings key to change between heat and cool settings.

. 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.

69-1536–3

Replacing the Batteries

This thermostat uses three AA alkaline batteries. Batteries must be installed for programming and operation of

the thermostat and heating (cooling system).

The batteries are located in the wallplate. See illustration.

WALLPLATE

IMPORTANT

Although the thermostat has a low battery

indicator, replace the batteries once a year to

prevent leakage and to prevent the thermostat

and heating/cooling system from shutting down

due to lack of battery power in the thermostat.

. When the batteries are running low, a REPL BAT

message flashes from one to two months before

the batteries run out completely. Replace the

batteries as soon as possible when the message

flashes.

INSTALL 3 AA ALKALINE BATTERIES

AS SHOWN, POSITIVE (+) TERMINALS

TOWARD TOP.

M10622

69-1536–3

. Remove the thermostat by placing your thumb

between the thermostat and wallplate and

pulling the thermostat up and away as shown.

If you insert new batteries within 20 to 30 seconds of

removing the old batteries, the system retains the

current time and day. If the display is blank, the

batteries are dead or installed incorrectly. You must

reset the time and day. Refer to Setting the Clock

section for instructions.

As a precaution when leaving home for

longer than a month, change batteries

before leaving to prevent the system from

shutting down due to lack of power.

Always use fresh alkaline batteries.

Nonalkaline batteries do not last as long; they also

can leak, causing damage to the thermostat and the

wall surface. Honeywell recommends Energizer®

batteries.

M16424

69-1536–3

Using the

(Information) Key

The

(information) key provides information at your

System

Heat

fingertips. The sequence of key presses is:

•

Current setpoint of mode in use (Heat or Cool).

Setpoint of mode not currently in use.

Fan

Tue

Wake

Room

DST

Auto

INFORMATION KEY

M20150

Displaying Current Settings

Press key once to check the current temperature setpoint. Press

key twice to check the temperature

setpoint of the mode not currently in use.

Cool

M20152

Press

key once to display current setpoint.

Example display shows cooling setpoint of 75°.

69-1536–3

Display or Reset Filter Timer Settings

When the thermostat activates a timer, the thermostat

flashes Filter until the timer resets.

. Reset the timer by pressing the i key until the

expired timer is displayed.

3. Press the Run Program key.

Note: You can view the number of days remaining at

any time by pressing the i key three or four

times. If more than one timer is active, all active

timers show sequentially when pressing the i

key several times.

Filter

Days

If you want to use this feature and it is not currently

activated, check the Installation Instructions at

www.honeywell.com/yourhome or call 1-800-468-

M20243

. Press the Timer ▲ key to reset the timer.

1502.

Filter

Days

M20244

69-1536–3

SETTING THE CLOCK

Set Day/Time

Setting Current Day and Time

On initial power up or after an extended power loss, “1:00 PM”

flashes on the display until a key is pressed.

Mon

Set Current

Day/Time

1. Press Set Current Day/Time key.

M14580

Press Set Current Day/Time key to

show information displayed.

IMPORTANT

Always press the keys with your fingertip or similar blunt tool. Sharp instruments like pens and pencil

points can damage the keyboard.

69-1536–3

. Press Day key until the current day displays.

Day

Set Day/Time

Mon = Monday, Tue = Tuesday, Wed = Wednesday,

Thu = Thursday, Fri = Friday, Sat = Saturday,

Sun = Sunday.

Tue

M14581

Press Day key to set the current day.

Example display shows Tuesday.

3. Press Time

or Time

key until the current time displays.

TIME

Tap the Set Current Day/Time key to advance

Set Day/Time

the time in one-hour increments. Set Current

Day/Time

Tue

4. Press Run Program key to return to normal operation.

Run

Program

M14582

Press Time key to set the current time.

or Time

Example display shows 8:15 AM.

69-1536–3

Daylight Saving Time

Set Day/Time

NOTE: If the current time is Daylight Saving Time, press

Daylight Time key to display “DST.” Daylight

Time

Tue

DST

M14583

Press Daylight Time key to set Daylight Saving Time.

Pressing Daylight Time key more than once

within a five minute period scrolls you through

various time options (example: one hour

earlier or later with or without DST). Pressing

Daylight Time key six times in a five minute

period returns you to your original setting.

69-1536–3

PROGRAMMING YOUR THERMOSTAT

-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

LEAVE

The program period when you want the house at a comfortable temperature when you get up and

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.)

The program period you can set for an energy saving temperature while you are away at work or

school. (This is a lower temperature during heating season, and higher temperature during cooling

season) and it follows the WAKE period.

RETURN The program period when you want the house at a comfortable temperature for activities before

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.

SLEEP

The program period you set for an energy-saving temperature while you are sleeping. (This is a lower

temperature during heating season, and higher temperature during cooling season) and it follows the

RETURN period.

69-1536–3

-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:

. Write the time you want for each program period.

. Write the heating and cooling temperatures you want for each period.

. Draw a circle around the fan operation you desire for each period.

Table 1. 7-Day Preprogrammed Schedule.

WAKE

6:00 AM

LEAVE

8:00 AM

RETURN

6:00 PM

SLEEP

10:00 PM

ALL DAYS

TIME

FAN

TIME

FAN

TIME

FAN

TIME

FAN

AUTO

H 70 (21)

C 78 (2.5)

H 62 (16.5)

C 85 (29.5) H 70 (21)

C 78 (25.5) H 62 (16.5)

C 82 (28)

69-1536–3

Customizing Your Own 7-Day Schedule

Table 2. Your 7-Day Schedule.

WAKE

LEAVE

RETURN

SLEEP

SUNDAY

MONDAY

TUESDAY

TIME

FAN

TIME

FAN

TIME

FAN

TIME

FAN

AUTO

TIME

FAN

TIME

FAN

TIME

FAN

TIME

FAN

AUTO

TIME

FAN

TIME

FAN

TIME

FAN

TIME

FAN

AUTO

WEDNESDAY TIME

TIME

FAN

TIME

FAN

TIME

FAN

AUTO

THURSDAY

FRIDAY

TIME

FAN

TIME

FAN

TIME

FAN

TIME

FAN

AUTO

TIME

FAN

TIME

FAN

TIME

FAN

TIME

FAN

AUTO

SATURDAY

TIME

FAN

TIME

FAN

TIME

FAN

TIME

FAN

AUTO

69-1536–3

About Power Outages…

Don’t worry! Your thermostat retains the schedule (preprogrammed or your own) for the life of the

product. The time and day information is retained for a minimum of twenty minutes during a

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.

69-1536–3

1. Press the Wake key.

Wake

System

Heat

Set Program

Setting

Fan

Tue

Wake

Heat

Auto

M14586

Press the Wake key to enter the program mode. Example

display shows 6:00 AM on Tuesday with Heat set to 70°F.

2. Press Day key until the desired day displays. Day

System

Heat

Set Program

Setting

Fan

Mon

Wake

Heat

Auto

M14588

Press Day key to select the day to program. Example

display shows Monday is selected and ready to program.

69-1536–3

. Press Time

time displays.

or Time

key until the desired Wake

System

Heat

Set Program

Setting

TIME

Fan

Mon

Wake

The program times are in fifteen-minute intervals;

for example, 8:00, 8:15, 8:30.

Heat

Auto

M14589

Press the Time

or Time

key to select the

time the Wake period will begin. Example display

shows the Wake period will begin at 6:30 AM.

. Press increase ▲ or decrease ▲ key until the desired

Wake temperature displays.

System

Heat

Set Program

Setting

The setpoint temperature range is 40 to 90°F

Fan

(4 to 32°C) for heating and 55 to 99°F

13 to 37°C) for cooling.

Mon

Wake

(

Heat

Auto

M14590

Press increase ▲ or decrease ▲ key to select the

temperature for the Wake period. Example display

shows the heating Wake period set for 68°.

69-1536–3

. 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

. Press Heat/Cool Settings key to make selections for the opposite system setting (either

Heat or Cool).

Heat/Cool

Settings

System

Heat

Set Program

Setting

Fan

Mon

Wake

Cool

Auto

M14591

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°.

69-1536–3

. Press increase ▲ or decrease ▲ key until the desired

temperature setpoint displays.

System

Heat

Set Program

Setting

Cool

Fan

Mon

Wake

Auto

M14592

Press increase ▲ or decrease ▲ to select the

cooling Wake temperature. Example display

shows the cooling Wake period set for 76°.

. 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.

Run

Program

69-1536–3

Copying a Day

The thermostat must be in the program mode to use the copy feature. Go to step 2 if the thermostat is

already in the program mode (set program displays in the upper left corner).

. Press Wake, Leave, Return or Sleep key to enter program mode. Wake

Leave

Return

Sleep

. Press Day key to select the day to copy from. Day

Set Program

Setting

System

Heat

Fan

Mon

Wake

Heat

Auto

M14590

Press Day key to select the day schedule to copy.

Example display shows the thermostat in program

mode with Monday ready to be copied.

69-1536–3

3. Press Copy key.

Copy

Mon

M14594

Press Copy key to copy a day schedule into memory. Example

display shows Monday schedule was copied into memory.

4. Press Day key until the day to be copied to is displayed.

Day

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.

69-1536–3

5. Press Copy key.

Copy

NOTE: “donE” displays for two seconds before the

normal display returns.

M14596

Press the Copy key again to complete the copy command.

Example display shows “donE”. Monday schedule was

successfully copied to Wednesday (Monday and Wednesday

now have the same schedule).

6. Repeat steps, as necessary, for all the periods and days desired.

7. Press Run Program key to return to normal operation.

Run

Program

69-1536–3

Clearing a Program Period

The thermostat must be in the program mode

System

Heat

Set Program

Setting

to use the clear feature. Go to step 2 if the thermo-

stat is already in the program mode

(Set Program displays in upper left corner).

Fan

Mon

Leave

Heat

1. Press Leave, Return or Sleep key to enter program

M14597

mode.

Leave

Return

Sleep

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° .

2. Press Day key until the desired day displays. Day

System

Heat

Set Program

Setting

Fan

Sat

Leave

Heat

M14598

Press Day key to select the day to begin clearing

the periods. Example display shows Saturday is selected

69-1536–3

. Press and hold Leave, Return or Sleep key until the start

time and temperature setting are cleared (approximately

three seconds).

Set Program

Setting

Leave

Return

Sleep

Sat

NOTE: Wake cannot be cleared.

Leave

Heat

M14599

Press and hold Leave, Return or Sleep key to

clear the period for that day. Example display

shows Saturday Leave period cleared.

You do not have to program a replacement time for the remaining periods; for example, Wake and

Sleep. If you clear only the Leave and Return periods for Saturday (or any day), the thermostat

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.

Run

Program

69-1536–3

TROUBLESHOOTING

Symptom

Display does not

come on.

Possible Cause

Action

Thermostat is not being

powered.

• Check if the batteries are correctly installed.

• Check if the thermostat is mounted and latched on the

wallplate—mount and latch the thermostat on the

wallplate.

Temperature setting

does not change

The upper or lower

temperature limits were

reached.

Check that the temperature setpoints are:

Heating: 40 to 90°F (4 to 32°C)

(

Example: cannot set

Cooling: 55 to 99°F (13 to 37°C).

the heating higher or

the cooling lower).

Heating does not

come on.

System selection is not set to

Heat. Heating setpoint is

below room temperature.

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.

Filter" flashes in

Indicates a Filter Timer has

expired.

See Display or Reset Filter Timer Settings section to

reset timer.

display.

continued

69-1536–3

Troubleshooting (Cont)

Symptom

Cooling does not

come on.

Possible Cause

Action

Check that setpoint is below room temperature.

Check if the circuit breaker is tripped—reset the circuit

breaker.

System selection is not set to

Cool. Cooling setpoint is

above room temperature.

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.

System on indicator—

Heating/cooling equipment

turns on the fan when the

equipment has reached the

preset time or temperature.

Wait a minute after seeing the

and then

for heat,

for

check the registers. If there is no hot or cool air coming

from registers, refer to Heating does not come on or

Cooling does not come on.

cool— is lit, but no

warm or cool air is

coming from the

registers.

Heat or cool turns on

before programmed

time.

Adaptive Intelligent

Recovery™ control is on.

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.

69-1536–3

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.

69-1536–3

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 or call 1-800-468-1502, Monday-Friday, 7:00 a.m. to 5:30 p.m., Central time. In Canada, write Retail Products ON15-02H, Honeywell Limited/

Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9.

69-1536–3

CUSTOMER ASSISTANCE

After reading this guide, if you have any questions about the operation of your thermostat, please contact the

Honeywell Customer Relations at www.honeywell.com/yourhome or 1-800-468-1502. For service, contact your

local heating and cooling contractor.

69-1536–3

FCCID: CFS8DL5800STAT

CANADA: 1748A 12111

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and

(2) This device must accept any interference received, including interference that may cause undesired operation.

FEDERAL COMMUNICATIONS COMMISSION (FCC) STATEMENT

This equipment has been tested to FCC requirements and has been found acceptable for use. The FCC requires the following statement for

your information:

This equipment generates and uses radio frequency energy and, if not installed and used properly; that is, in strict accordance wih the

manufacturer’s instructions, may cause interference to radio and television reception. It has been type tested and found to comply with the limits

for a Class B computing device in accordance with the specifications in Part 15 of FCC Rules, which are designed to provide reasonable

protection against such interference in a residential installation. However, there is no guarantee that interference will not occur in a particular

installation. If this equipment does cause interference to radio or television reception, which can be determined by turning the equipment off and

on, the user is encouraged to try to correct the interference by one or more of the following measures:

•

If using an indoor antenna, have a quality outdoor antenna installed.

Reorient the receiving antenna until interference is reduced or eliminated.

Move the radio or television receiver away from the receiver/control.

Move the antenna leads away from any wire runs to the receiver/control.

Plug the receiver/control into a different outlet so that it and the radio or television receiver are on different branch circuits.

If necessary, the user should consult the dealer or an experienced radio/television technician for additional suggestions. The user or installer may

find the following booklet prepared by the Federal Communications Commission helpful: "Interference Handbook"

This booklet is available under Stock No. 004-000-00450-7 from the US Government Printing Office, Washington, DC 20402.

The user shall not make any changes or modifications to the equipment unless authorized by the Installation Instructions or User’s Manual.

Unauthorized changes or modifications could void the user’s authority to operate the equipment.

69-1536–3