Honeywell Thermostat Ct8602 Users Manual 69 1532 H0neywell Programmable

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2015-01-23

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Honeywell CT8602

PROGRAMMABLE THERMOSTAT
OWNER’S GUIDE
Seven Day
Programmable Heat and/or Cool
Low Voltage (20 to 30 Vac) Thermostat and Wallplate
Model CT8602
Para obtener un documento con las instrucciones en español, por favor visite
nuestro sitio de web a: www.honeywell.com/yourhome.
Pour obtenir des notices techniques en français, veuillez consulter notre site
web: www.honeywell.com/yourhome.

Table of Contents
Step 1. Prepare for Installation ...............................................................................................................................................
Step 2. Remove Old Thermostat ............................................................................................................................................
Step 3. Mount Thermostat Wallplate ......................................................................................................................................
Step 4. Wire Wallplate Terminals ...........................................................................................................................................
Step 5. Install the Batteries ....................................................................................................................................................
Step 6. Set Fan Operation Switch ..........................................................................................................................................
Step 7. Mount the Thermostat ...............................................................................................................................................
Step 8. Customize Your Thermostat ......................................................................................................................................
Step 9. Set the Clock .............................................................................................................................................................
Step 10. Programming ...........................................................................................................................................................
Step 11. Operating Your Thermostat ......................................................................................................................................
Step 12. Set the Fan and System Switches ...........................................................................................................................
If You Have a Problem ...........................................................................................................................................................
Wiring Diagrams ....................................................................................................................................................................
® U.S. Registered Trademark
Copyright © 2004 Honeywell International Inc.
All Rights Reserved

69-1532-2

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14
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Total comfort temperature management with Smart Response™ Technology
Congratulations! You made a smart choice by purchasing your new Honeywell thermostat; the smart thermostat that:
• Keeps you comfortable by automatically calculating exactly when the furnace or air conditioning should go on to
have the house at the desired comfort temperature by the time you wake up or return home.
• Saves the maximum amount of energy and money by automatically remembering to adjust the temperature when
you leave home or go to sleep.
• Provides the ultimate in comfort and convenience. It comes preprogrammed. You can use the preprogrammed
schedule, or set your own.
This manual answers many of the questions that can arise as you become familiar and comfortable with your
Honeywell thermostat — the state of the art in home comfort controls.
Read these instructions carefully. Failure to follow these instructions can damage the product or cause a hazardous
condition.

MERCURY NOTICE

If this thermostat is replacing a control that contains mercury in a sealed
tube, do not place your old control in the trash. Contact your local waste
management authority for instructions regarding recycling and the proper
disposal of this control, or of an old control containing mercury in a sealed
tube.

MERCURY
SWITCH

TYPICAL LOCATION OF A MERCURY
SWITCH IN A THERMOSTAT
M10614

69-1532—2

2

SET RETURN TIMES
AND SETPOINTS

SET LEAVE TIMES
AND SETPOINTS

SET WAKE TIMES
INCREASE TIME SETTING
AND SETPOINTS
OR SCROLL FORWARD
THROUGH INSTALLER SETUP
AND SYSTEM TEST

DECREASE TEMPERATURE
SETTING OR SCROLL
BACKWARD THROUGH
INSTALLER SETUP OPTIONS

SET CURRENT
DAY AND TIME

DISPLAY INFORMATION
SUCH AS PRESENT
SETTINGS AND OUTDOOR
TEMPERATURE

RETURN TO
NORMAL
OPERATIONS
ENTER
INDEFINITE
OR TIMED
HOLD MODE

Time
Run
Program

Set Current
Day/Time

Set Program
Wake

Leave

Return
Heat

Hold Temp

SET CURRENT OR
PROGRAM DAY
CHANGE BETWEEN
DAYLIGHT SAVINGS
AND STANDARD TIME

INCREASE TEMPERATURE
SETTING OR SCROLL
FORWARD THROUGH
INSTALLER SETUP OPTIONS

Heat/Cool
Settings

Day

SYSTEM SWITCH
Auto

DECREASE TIME SETTING OR
SCROLL BACKWARD THROUGH
INSTALLER SETUP AND SYSTEM TEST

3

SET SLEEP TIMES
AND SETPOINTS

Cool

Fan

Copy

COPY ONE PROGRAMMED
DAY TO ANOTHER DAY

Off

System
On

Daylight
Time

Sleep

FAN SWITCH

CHANGE BETWEEN
HEATING AND COOLING
SETPOINTS
M14880

69-1532—2

SHOWS WHEN THERMOSTAT IS
IN THE PROGRAMMING MODE

DISPLAYS EITHER CURRENT
TIME OF DAY OR PROGRAM TIMES

SHOWS THERMOSTAT IS
PROCESSING INFORMATION
AND WAITING TO CALL FOR
HEAT OR COOL
SHOWS SMART
RESPONSE
IS CHANGING
THE TEMPERATURE
TO MEET THE
CURRENT
PROGRAMS
SHOWS
VACATION
HOLD
DURATION

SHOWS THE TEMPERATURE
DISPLAYED IS THE CURRENT
SET TEMPERATURE

Wait Set Program Set Day/Time Temporary Setting
Recovery
Hold for

AM

System
Heat
Off
Cool

Days
Mon Tue Wed Thu Fri Sat Sun Repl Batt Room Filter
Wake Leave Return Sleep DST

SHOWS CURRENT
DAY OR DAYS
BEING
PROGRAMMED
SHOWS CURRENT
PROGRAM PERIOD
OR PERIOD BEING
PROGRAMMED

69-1532—2

SHOWS TEMPERATURE SETTING
CHANGED FOR THIS PROGRAM PERIOD

DISPLAYS
EITHER ROOM
OR SET
TEMPERATURES

SHOWS THE BATTERIES
ARE LOW AND MUST BE
REPLACED
SHOWS SYSTEM ON
DAYLIGHT SAVINGS TIME

SHOWS CURRENT
SYSTEM SWITCH
POSITION
HEAT/OFF/COOL
SHOWS THAT
THERMOSTAT IS
"CALLING" FOR
HEAT
OR COOL
SHOWS SMART
RESPONSE IS OFF.
CONVENTIONAL
RECOVERY IS ON

SHOWS THE TEMPERATURE
DISPLAYED IS THE CURRENT
ROOM TEMPERATURE
M18746

4

STEP 1. PREPARE FOR INSTALLATION
❑ Check the contents of your thermostat package to be sure all items are included.

Package Contents
•
•

Thermostat
Wiring labels

•
•

Wallplate
Screws and anchors

•

Owner’s Guide

•

Drill bits: 3/16 in. for drywall;
7/32 in. for plaster

❑ Locate the required tools to install your thermostat.

Tools Required
•
•
•

Screwdriver
Hammer
Level

•
•

Drill
Needle-nose pliers

STEP 2. REMOVE OLD THERMOSTAT
❑ Test your heating and cooling systems to make sure they work properly. If either system does not work, contact
your local heating/air-conditioning dealer. To avoid compressor damage, do not operate the cooling system when
outdoor temperature is below 50°F (10°C).
❑ Turn off power to the system at the furnace or the fuse/circuit breaker panel.
❑ Carefully unpack your new thermostat and wallplate. Save package of screws, instructions, and receipt.
❑ Remove the cover from the old thermostat. If the cover does not snap off when pulled firmly from the bottom, check
for a screw or screws used to lock on the cover.
❑ Loosen the screw or screws holding the thermostat to the wallplate and lift the thermostat away.
❑ Disconnect the wires from the old thermostat. As you disconnect each wire, attach the enclosed labels with the old
terminal designation. If there are only two wires, they do not need to be labeled. Wrap the wires around a pencil as
shown to keep them from falling back into the wall.
WIRES THROUGH
WALL OPENING

Special Installations
Read this section if you are replacing:
• Clock thermostat with separate wires for the clock.
• Thermostat with six or more wires connected to it.
• Thermostat in a heating only system with three wires.
5

M5136

69-1532—2

Replacing a Clock Thermostat that has C or C1 Clock Terminals
When replacing a Honeywell Chronotherm® Thermostat, you may find one or two wires going to the C or C1 clock
terminals on the Chronotherm wiring wallplate. Do not allow them to touch, or you can damage the transformer.
Disconnect the wires and wrap them separately using electrical tape. Do not wrap them together. Place the wires
where they will not interfere with the operation of the new thermostat. Record the colors and terminal designation
labels of the remaining wires.

Replacing a Thermostat that has Six or More Wires
If there are six or more wires (excluding clock wires attached to terminals), you probably have a variation of a
multistage heat pump or other multistage system. This thermostat is not compatible with multistage systems, so return
the product to the place of purchase. For information about which programmable thermostats will work with your
system, call Honeywell Customer Care at 1-800-468-1502.

Replacing a Thermostat that has Three Wires
If you have three wires for a heating only system and can operate the fan using the fan On switch this thermostat works
with your system. However, some hot water (zoned) heating systems also have three wires. Your thermostat will work
only if you install an isolating relay on these systems. For details, call your local heating and/or cooling contractor.

STEP 3. MOUNT THERMOSTAT WALLPLATE
❑ Separate wallplate from thermostat by placing your thumbs between bottom of wallplate
and thermostat and pulling wallplate up and away from thermostat. See illustration.
❑ Position wallplate on wall. Level wallplate
for appearance, if desired. Use a pencil to mark
WALL
two mounting holes that best fit the application.
WIRES
THROUGH WALL
❑ Remove wallplate from wall. Drill two 3/16 in.
holes in wall (if drywall) as shown.
WALL
For plaster or wood, drill 7/32 in. holes as
ANCHORS (2)
marked. Gently tap (provided) anchors into
drilled holes until flush with wall.
❑ Reposition wallplate over holes. Pull wires
through wiring opening. Loosely insert mounting
screws into each of the holes.
MOUNTING
HOLES
❑ Level wallplate, if desired. Thermostat
MOUNTING
SCREWS
functions correctly, even when not level.
❑ Tighten mounting screws.
M15044

69-1532—2

6

M16427

STEP 4. WIRE WALLPLATE TERMINALS
IMPORTANT
All wiring must comply with local codes and ordinances.
If unsure about household wiring procedures, call your
local heating/air-conditioning contractor.
Refer to the labels you placed on the wires when you removed
the old thermostat (see illustration).

G

FOR WRAPAROUND
INSERTION STRIP
7/16 IN. (11 MM).

Y

❑ Match the letter of old thermostat wire with the corresponding
terminal letter on new thermostat. Refer to Table 1.
❑ Remove factory-installed jumper connecting terminals R and
RC if wires are connected to both of those terminals.
❑ For wiring diagrams, if needed, see Wiring Diagrams section.
❑ Loosen terminal screws. Slip each wire beneath matching
terminal. Wraparound and straight connections are both
acceptable, (see illustration). Tighten terminals.
❑ Plug the hole in the wall with insulation to help prevent
drafts from adversely affecting thermostat operation.

R
W

M16425

FOR STRAIGHT INSERTION
STRIP 5/16 IN. (8 MM).

M4826

7

69-1532—2

Table 1. Terminal Designations on Old and New Thermostats.
Terminal on Old Thermostat

Connect To

Description

R

Power

Rc, Ra

Rc

Power for cooling

W, W1, H

W

Heat

Y, Y1, M

Y

Cooling

G, F

G

Fan

R,

RHa,

4, V

O

O

Changeover in cool. (Single stage heat pump only).

Bb

Bb

Changeover in heat. (Single stage heat pump only).

Cc, Xc, Bb

Do not connect.

Transformer common

W2, H2

Do not continue installation.
Call 1-800-468-1502.

Second stage heat.

Y2
a
b
c

Second stage cool.

If both RH and R terminals are present on existing thermostat, remove jumper and connect Rh to R and R to Rc.
Do not connect both O and B when wiring to a single stage heat pump. Connect O to O. Tape off B.
Tape off end of the wire with electrical tape and push the taped wire back into the wiring hole in the wall.

STEP 5. INSTALL THE BATTERIES

WALLPLATE

IMPORTANT
Three fresh AA alkaline batteries must be installed for programming and operation of the thermostat and the heating/
cooling system.
❑ Install the batteries in the wallplate so the positive terminals all
point up (see illustration).
❑ If the thermostat is already mounted on the wall, remove the
thermostat by placing your thumb between the thermostat and
wallplate and pulling the thermostat up and away as shown
on the next page.
69-1532—2

8

B

R

RC

O

W

Y

G

INSTALL 3 AA ALKALINE BATTERIES
AS SHOWN, POSITIVE (+) TERMINALS
TOWARD TOP.

M10622

❑ When the batteries are running low, a REPL BAT message flashes for one
to two months before the batteries run out completely. Replace the
batteries as soon as possible once the message flashes.
IMPORTANT
Although the thermostat has a low battery indicator, replace the
batteries once per 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.
❑ 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 Step 9. Set the Clock for instructions.

60

70 80

90

90

60

70 80

M16424

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 and can
leak, causing damage to the thermostat and the wall surface.

STEP 6. SET FAN OPERATION SWITCH
The thermostat fan operation switch, labeled FUEL SWITCH, is factory
set in the F position. This is the correct setting for most systems. If your
system is an electric heat system, set the switch to E. The E setting
allows the fan to turn on immediately with the heating and cooling in a
system where the G terminal is connected.

FUEL SWITCH

9

M12676

69-1532—2

STEP 7. MOUNT THE THERMOSTAT
A. ENGAGE TABS AT TOP

B. PRESS LOWER

OF THERMOSTAT
AND WALLPLATE.

EDGE OF CASE
TO LATCH.

M12703A

STEP 8. CUSTOMIZE YOUR THERMOSTAT
Your Honeywell CT8602 Thermostat comes preset to the most commonly used settings. The settings are:
• Gas or oil forced air furnace.
• Smart Response Technology on.
• Temperature °F.
• 12-hour clock format.
You can change any or all of these settings.
IMPORTANT
Always press the keys with your fingertip or a similar blunt tool. Sharp instruments like pens and pencil
points can damage the keyboard.
❑ Press and hold down , , and
simultaneously until the display shows two numbers.
You now can change any of these settings.

69-1532—2

10

System Type (Feature Number 4)
System type options are:
— 1 = Gravity or steam system.
— 3 = Hot water, high efficiency furnace (90% or better), or single stage heat pump.
— 6 = Gas or oil forced air furnace (preset).
— 9 = Electric furnace.

FEATURE
NUMBER

OPTION
M18750

To change your system type:
❑ Press

until display shows your furnace or boiler type.

❑ Press Time

to move to next feature or

Run
Program

to return to main display.

Smart Response™ Technology (Feature Number 13)
Smart Response Technology options are:
— 0 = Smart Response Technology on (preset).
— 1 = Smart Response Technology off.
M18751

To turn Smart Response Technology on or off:
❑ Press

once.

❑ Press Time
NOTE:

to move to next feature or

Run
Program

to return to main display.

See Smart Response Technology section for information about this feature.

Temperature Format (Feature Number 14)
Temperature format options are:
— 0 = °F (preset).
— 1 = °C.
M18752

To change temperature format:
❑ Press

once.

❑ Press Time

to move to next feature or

Run
Program

to return to main display.

11

69-1532—2

Time Format (Feature Number 16)
Time format options are:
— 0 = 12-hour clock (preset).
— 1 = 24-hour clock.
M18753

To change time format:
❑ Press

once.

❑ Press Time

to move to next feature or

Run
Program

to return to main display.

Heating Temperature Range Stops (Feature Number 34)
Temperature range options are:
— 90 = highest setting for heating setpoint (preset).
— 40 to 89 = temperature range (1°F increments) of heating setpoint settings.
❑ Press
or
until the display shows the desired heating temperature range
stop.
Run
❑ Press Time
to move to next feature or Program to return to main display.

M18748

Cooling Temperature Range Stops (Feature Number 35)
Temperature range options are:
— 45 = lowest setting for cooling setpoint (preset)
— 46 to 99 = temperature range (1°F increments) of cooling setpoint settings.
❑ Press
or
until the display shows the desired cooling temperature range
stop.
Run
❑ Press Time
to move to next feature or Program to return to main display.

M18749

Factory Set Function (Feature Number 37)
Do not change this setting.
❑ Press Time

to move to next feature or

Run
Program

to return to main display.
M18754

69-1532—2

12

Furnace Air Filter Timer (Feature No. 43)
Filter timer options:
0 = off
1 = 30 days
2 = 90 days (preset)
3 = 180 days
4 = 365 days
To change your filter timer:
❑ Press
until the display shows the desired number of days.
❑ Press Time
NOTE:

to move to next feature or

Run
Program

M19600

to return to main display.

The filter time is based on calendar days.

Humidifier Pad Timer (Feature No. 44)
Humidifier pad timer options:
0 = off (preset)
1 = 90 days
2 = 180 days
3 = 365 days
M20246

To change your humidifier pad timer:
❑ Press

until the display shows the desired number of days.

❑ Press Time
NOTE:

to move to next feature or

Run
Program

to return to main display.

The humidifier pad time is based on calendar days. See your humidifier instructions for complete details on
replacing and/or cleaning your humidifier pad.

Ultraviolet (UV) Lamp Timer (Feature No. 45)
UV lamp timer options:
0 = off (preset)
1 = 365 days
To change your UV lamp timer:
❑ Press

until the display shows the desired number of days.

❑ Press Time
NOTE:

to move to next feature or

Run
Program

M20247

to return to main display.

The UV lamp time is based on calendar days. See your UV lamp instructions for complete details on
replacing your UV lamps.
13
69-1532—2

STEP 9. SET THE CLOCK
Set Current Day and Time
NOTE:

On initial power-up, the screen flashes 1:00 pm until you press a key.

❑ Press

Set Current
Day/Time

❑ Press

.
until screen shows current day.

Day

❑ Press Time
❑ Press

Daylight
Time

❑ Press

Run
Program

or

until current time shows. (Tapping

Set Current
Day/Time

advances time in one-hour increments.)

until “DST” displays if daylight savings time is in effect.
.

STEP 10. PROGRAMMING
The keyboard is located behind the thermostat cover. The three most frequently used keys are near the display.
Pressing
displays the current temperature settings. Pressing the
and
keys change the temperature. The
thermostat displays day, time, program period, temperature, system and fan settings.
There is an individual key for each of the four program periods:
—

Wake

—The program period when the house is at a comfortable temperature while you get ready for work or

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

Leave

—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 a higher temperature during cooling season.)
—

Return

—The program period when you want the house at a comfortable temperature for activities before bedtime.

(This is a higher temperature during heating season and a lower temperature during cooling season.)
—

Sleep

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

temperature during heating season and a higher temperature during cooling season.)
69-1532—2

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— Table 2 shows the default temperature settings.
Table 2. Default Temperature Settings.
Period

Time

Heatinga Temperature

Coolingb Temperature

Wake

6:00 AM

70°F/21°C

78°F/25.5°C

Leave

8:00 AM

62°F/16.5°C

85°F/29.5°C

Return

6:00 PM

70°F/21°C

78°F/25.5°C

Sleep

10:00 PM

62°F/16.5°C

82°F/28°C

a Your
b

heating setpoints cannot be higher than 90°F (32°C) or lower than 40°F (4.5°C).
Your cooling setpoints cannot be higher than 99°F (37°C) or lower than 45°F (7°C).

Program the First Day
Start by programming the wake time and temperature for one day.
❑ Press and release
❑ Press

❑ Press

.

until the desired day displays (Mon, Tue, Wed, Thu, Fri, Sat, Sun).

Day

❑ Press time
NOTE:

Wake

or

until the desired time shows in the display.

Program times are in 15 minute intervals. For example, 8:00, 8:15, 8:30.
or

until the desired wake temperature displays.

The setpoint temperature range is 40°F to 90°F (4.5°C to 32°C) for heating and 45°F to 99°F (7°C to 37°C) for cooling.
❑ Press
NOTE:

Heat/Cool
Settings

to switch between setpoints.

Program times are the same for heating and cooling.

15

69-1532—2

❑ Press

or

❑ Press

Leave

until the display shows the desired temperature setpoint.
,

or

Return

and repeat these steps for each program period. The First Day is now

Sleep

programmed.
❑ Repeat each step in Program the First Day for the rest of the week.
NOTE:
❑ Press

After the first day is programmed, you can copy that day to any other day using procedure in Copy a Day.
Run
Program

when the entire week is programmed.

Copy a Day
Your thermostat can copy program settings from one day to another.
❑ Press
❑ Press
❑ Press

Wake

,

,

Return

or

Sleep

to enter programming mode.

until the display shows the day you want to copy.

Day

Copy

Leave

.
Mon

❑ Press

Day

M13327

until the display shows the day you want to copy to.
Mon

Wed

M13328

❑ Press

Copy

to accept the change.

❑ Repeat these steps for each day you want to copy.
NOTE:

donE appears for two seconds and then the normal program display appears.

69-1532—2

16

M13329

Clear a Program Period
NOTE:
❑ Press
❑ Press

Wake cannot be cleared.
Leave

,

Return

, or

Sleep

for the program period you want to clear.

until the desired day displays.

Day

❑ Press and hold

,

Leave

, or

Return

Sleep

for approximately three seconds until time and temperature clear.

❑ Repeat the above steps for each period to be cleared.
❑ Press

Run
Program

.

STEP 11. OPERATING YOUR THERMOSTAT
Change Temperature Setting Until the Next Program Period (Temporary Change)
❑ Press
NOTE:

or

until the screen shows the desired temperature setting.

The temporary temperature setting is displayed for about three seconds and then the room temperature is
displayed. Temporary appears in the display. The setting cancels when the next program period starts or
Run
when you press Program .

Change Temperature Setting Indefinitely (Hold)
❑ Move the System switch to the desired position (Heat or Cool).
❑ Press

Hold Temp

then

or

to change your setting if desired. (The display changes from showing the setpoint

temperature to room temperature after approximately three seconds.)
❑ To cancel “Hold” press

Run
Program

.

17

69-1532—2

Change the Temperature Setting Until a Designated Day and Period (Vacation Hold)
❑ Press

Hold Temp

❑ Press

twice.

or

until display shows desired temperature setpoint.

❑ Press Time
❑ Press
NOTE:

until the desired number of days that you will be away (1 through 255) is displayed.
,

Wake

Leave

,

Return

or

Sleep

to select the program period when you want the program to restart.

If Vacation Hold needs to be cancelled before designated time, press

Run
Program

to return to the program.

Daylight Savings Time Key
This feature allows you to switch between standard time and daylight savings time.
❑ Press

Daylight
Time

during fall to set the time back one hour.

❑ Press

Daylight
Time

in spring to set time forward one hour. DST is displayed when operating on daylight savings time.

NOTE:

Pressing Daylight Time key more than once in a five minute period scrolls through various time options.
(One hour earlier or later, with or without DST. Pressing the key six times in a five minute period returns you
to the original setting.

View or Reset Timer Settings
When the thermostat activates a timer, the thermostat flashes Filter until you reset the timer.
❑ Reset the timer by pressing the
❑ Press the Time
❑ Press the
NOTE:

Run
Program

key until the expired timer is displayed.

key to reset the timer.
key.

You can view the number of days remaining at any time by pressing the
key three or four times. If more
than one timer is active, all active timers show sequentially when pressing the
key several times.

69-1532—2

18

For complete instructions on replacing or cleaning your furnace filter, humidifier pad or UV lamp, see the product
owner’s manuals. Contact your local contractor or visit www.honeywell.com/yourhome.

STEP 12. SET THE FAN AND SYSTEM SWITCHES
First set Fan
switch.

Fan On: The fan runs continuously. Use for improved air
circulation or for more efficient central air cleaning. (In a heat-only
system, fan runs continuously only if fan relay is connected to the
G thermostat terminal.)

On

Auto

Fan

Fan Auto: Normal setting for most homes. The equipment
controls the fan operation.
Then set System
switch.

Heat: The thermostat controls your heating system.
Off: Both the heating and air conditioning systems are off.
Cool: The thermostat controls your air conditioning system.

19

Heat

Off

Cool

System

69-1532—2

IF YOU HAVE A PROBLEM
Table 3. Solution Guide.
If...
Display does not appear.

Then…
•
•

Make sure the batteries are fresh and installed correctly.
Make sure the thermostat is mounted and latched on the wallplate.
Mount and latch the thermostat on the wallplate if it is not.

Temperature settings will not change
•
(example; cannot set the heating higher
or the cooling lower).
•

Make sure the temperature setpoints are:
40°F to 90°F (4.5°C to 32°C) for heating.
45°F to 99°F (7°C to 37°C) for cooling.
Check Customize Your Thermostat section, Feature Numbers 34 and
35. Reset as necessary.

Heating does not come on.

•
•
•
•
•

Set the system switch to Heat.
Make sure heating setpoint is above room temperature.
Make sure circuit breaker is not tripped, and reset it if necessary.
Make sure power switch at equipment is in On position.
Wait five minutes for the system to respond.

Cooling does not come on.

•
•
•
•
•

Set the system switch to Cool.
Make sure the cooling setpoint is below the room temperature.
Make sure the circuit breaker is not tripped, and reset it if necessary.
Make sure System switch at air conditioner is in On position.
Wait five minutes for the system to respond.

System on indicator( = heat,
=
cool) is lit, but no warm or cool air is
coming from the registers.
Display flashes during programming.

69-1532—2

Wait five minutes after seeing flame or snowflake and check registers
again. If no hot or cool air is coming from registers, refer to Heating does
not come on or Cooling does not come on. Or contact your local heating
and cooling contractor.
The temperature setting limit was reached. Heating setting range is 40°F to
90°F (4.5°C to 32°C). Cooling setting range is 45°F to 99°F (7°C to 37°C).

20

Table 3. Solution Guide.
If...

Then…

Temperature change occurs at the
wrong times.

• Check the program times for the period in question.
• Make sure the AM and PM settings are correct.
• Make sure the current time and day settings are correct.
• Reprogram any incorrect settings.
NOTE: If your thermostat is set for Smart Response™ technology, the
start times occur before your programmed comfort periods.

Thermostat backlight appears dim.

•
•

Wait until Replace Battery indicator is illuminated and replace batteries.
Replace batteries now.

Toll-Free Customer Assistance
Please read and follow the instructions for this thermostat. If you have questions about this thermostat, visit our web
site at www.honeywell.com/yourhome, or call Honeywell Customer Care at 1-800-468-1502.

21

69-1532—2

WIRING DIAGRAMS
4-WIRE HEAT/COOL
(JUMPER INTACT)

2-WIRE HEAT-ONLY
(JUMPER INTACT)

THERMOSTAT
B

THERMOSTAT
B

RC O W Y

RC O W Y
R

G

R

G

HEATING
RELAY OR
VALVE COIL

HEATING
RELAY OR
VALVE COIL

COOLING
CONTACTOR
COIL

FAN
RELAY

1

1

1 POWER SUPPLY.
PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.

1 POWER SUPPLY. PROVIDE
DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
M10616

M10617

4-WIRE SINGLE-STAGE HEAT PUMP
(JUMPER INTACT)

3-WIRE HEAT ONLY WITH FAN
(JUMPER INTACT)

THERMOSTAT
B

THERMOSTAT
B

RC O W Y
R

G

RC O W Y
R

3

G

2

2

HEATING
RELAY OR
VALVE COIL

FAN
RELAY

COOL
CHANGEOVER
VALVE

1

1

1 POWER SUPPLY. PROVIDE
DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.

1
2

M10618

COMPRESSOR
CONTACTOR

3

HEAT
CHANGEOVER
VALVE

FAN
RELAY

POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
USE EITHER O OR B FOR HEAT PUMP CHANGEOVER.
USING A JUMPER WIRE (NOT SUPPLIED) CONNECT W TO Y.
M12739

69-1532—2

22

5-WIRE HEAT/COOL
(JUMPER REMOVED)

5-WIRE HEAT/COOL WITH DAMPER
(JUMPER INTACT)
THERMOSTAT
B

THERMOSTAT
B

RC O W Y

RC O W Y

HEATING
RELAY OR
VALVE COIL
1

FAN
RELAY

G

R

G

R

HEAT
DAMPER

COOLING
CONTACTOR
COIL
1

HEAT
RELAY

COOL
DAMPER

1 POWER SUPPLY. PROVIDE
DISCONNECT MEANS AND OVERLOAD
M10619
PROTECTION AS REQUIRED.

1

COMPRESSOR
CONTACTOR

FAN
RELAY

1

POWER SUPPLY. PROVIDE
DISCONNECT MEANS AND
OVERLOAD PROTECTION
AS REQUIRED.
M18738

Notice:
This thermostat is a Class B digital apparatus that complies with Canadian Radio Interference Regulations,
CRC c. 1374.

23

69-1532—2

Limited One-Year 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 Honeywells 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 International Inc. USA
Honeywell Canada:
Dock 4 — MN10-3860
Honeywell Limited/Honeywell Limitée
1885 Douglas Drive North
35 Dynamic Drive
Golden Valley, MN 55422
Scarborough, Ontario M1V 4Z9
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.
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 Honeywell Customer Care, 1885 Douglas Drive North, Golden Valley,
MN 55422-3992, or call 1-800-468-1502. In Canada, write Retail Products ON30 Honeywell Limited/Honeywell Limitée, 35 Dynamic
Drive, Scarborough, Ontario M1V 4Z9.

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

69-1532—2 J.S. Rev. 3-04

Printed in U.S.A. on recycled
paper containing at least 10%
post-consumer paper fibers.

www.honeywell.com/yourhome



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