MagicStat® CT3300 Programmable Thermostat
Welcome
with your new Honeywell MagicStat® Programmable
Thermostat. Your new thermostat will automatically
control the temperature in your home, keeping you
comfortable while saving energy.
If you have any questions about using this thermostat,
visit our home expert Web site at
www.honeywell.com/yourhome
Customer Relations at 1-800-468-1502.
to the world of comfort and energy savings
or call Honeywell
Installation and Programming Instructions
Weekday/Weekend (5-day/2-day)
Programmable Heat and/or Cool
Low Voltage (20 to 30 Vac)
Thermostat and Mounting Plate
Model CT3300
Table of Contents
Installation 2
Programming 11
Operation 17
Change the clock for Daylight/
Standard Time
Set the Fan and System switches 17
Replace the batteries 18
Override the program settings 19
Frequently asked questions 22
Limited 1-Year Warranty 24
17
®U.S. Registered Trademark
Copyright © 2001 Honeywell • All Rights Reserved
69- 0654- 5
Fig. 1
MERCURY
SWITCH
Recycling thermostat
If you are removing an old thermostat that contains mercury in a
sealed tube (Fig. 1),
place the old thermostat in the trash.
do not
Contact your local waste management authority for instructions
regarding recycling and the proper disposal of the old thermostat.
M3701
Installation
Verify that you have the right thermostat
Make sure that the CT3300 is the right thermostat for your heating/cooling system. Read the compatibility chart below to
determine which system you have. If your system is not compatible with the CT3300, the table recommends an alternate
Honeywell model. If you are unsure what type of thermostat is right for your system, visit us on the Web at
www.honeywell.com/yourhome
or call Honeywell Customer Relations at 1-800-468-1502.
Heating/cooling system
Conventional
Compatible
with CT3300?
Yes
Alternate
model
Single stage systems that include warm air furnaces and hot water.
Electric Baseboard
Electric powered heating strips located just above the floor, usually 120 to 240 volts.
Steam
No CT1950 for
240 volts
No CT3600
A steam boiler with radiator heat.
Heat Pump
No CT3600
Heating and cooling are produced from the same outdoor unit (compressor) with no
auxiliary or backup heat.
Multistage Heat Pump
No CT3611
Heating and cooling are produced from the same outdoor unit (compressor) with
auxiliary or backup heat.
Multistage Conventional
A heating or cooling system with more than one stage.
2
INSTALLATION 69-0654-5
No See your
contractor
Step 1. Prepare for installation
a. Carefully unpack your new thermostat. Save your receipt and make sure you have the following parts:
• Thermostat and mounting plate
• Labels
b. Gather the needed tools and supplies listed below.
Required tools and supplies Optional tools
• Two AA alkaline batteries. Honeywell recommends
Energizer® batteries.
• Screwdriver
• Hand or power drill with 3/16-inch or 7/32-inch drill bit
•Pencil
c. Make sure that your heating and cooling systems are working properly. If there is a problem with either system, call a
heating/air conditioning contractor—the problem may persist after you install the new thermostat.
• Screws and anchors
• Installation and Programming Instructions
• Wire cutter/stripper or sharp knife
•Level
• Electrical tape
IMPORTANT:
temperature outdoors is below 50°F (10°C).
69-0654-5 INSTALLATION
To avoid damaging the compressor in the air conditioner, do not operate the cooling system when the
3
Step 2. Remove the old thermostat
y
Fig. 2
Fig. 3
Fig. 4
WIRES THROUGH
WALL OPENING
M20140
M19086
a.
Turn off power
to the heating/cooling system, either at the
furnace or at the fuse/circuit breaker panel.
b. Remove the cover of your old thermostat (Fig. 2).
c. Unscrew and remove the old thermostat’s mounting plate from
the wall, but
do not disconnect the wires
d. Inspect the old thermostat wiring.
If the wiring meets any of
.
the following conditions, see the special wiring
instructions on page 9.
• The old thermostat is a clock thermostat with wires attached
to the C or C1 terminals.
• The old thermostat has 6 or more wires, excluding wires
attached to C or C1 terminals.
• The old thermostat has 3 wires.
• There are 5 wires
connected
• There are extra wires that are
to the old thermostat.
connected to the old
not
thermostat.
e. Using the enclosed labels, mark the wires with the letter of the
terminal that it is attached to on the
old thermostat
(Fig. 3). Do
not label the wires by color.
If the labels do not match the letters on the old thermostat
terminals, see the wiring cross reference table on page 10.
f. Disconnect the wires from the old thermostat and wrap the
wires around a pencil to keep them from
falling back into the
wall.
: Remember, if your old thermostat contains mercury, you
Note
must recycle it. See page 2 for more recycling information.
✓
Check
M20133
4
INSTALLATION 69-0654-5
Your wall should now look like Fig. 4.
our progress
Step 3. Install the mounting plate
Fig. 5
M20139
Fig. 6
M20129
Fig. 7
a. Separate the mounting plate from the thermostat using a coin,
as shown in Fig 5.
b. Position the mounting plate on the wall. Be sure the mounting
plate sits flush against the wall and none of the wires are
trapped behind it.
c. Level the mounting plate and use a pencil to mark the center of
the mounting plate’s screw holes.
d. Remove the mounting plate and drill holes at the locations you
marked.
• For drywall, drill two 3/16 inch holes.
• For plaster or wood, drill two 7/32 inch holes.
e. If installing in drywall, gently tap the anchors that were provided
into the drilled holes until they are flush with the wall.
f. Reposition the mounting plate over the holes, pull the wires
through the wiring opening, and loosely insert the mounting
screws into each of the drilled holes or anchors (Fig. 6).
g. Make sure the mounting plate is level and tighten the mounting
screws.
✓
Check your progress
The mounting plate is now mounted on the wall and should look like Fig. 7.
R
Y
c
69-0654-5 INSTALLATION
W
R
G
M20128
5
Step 4. Set the thermostat for your type of heating system
)
)
Fig. 8
FOR HIGH EFFICIENCY FURNACE (90%+ AFUE)
ADJUST: SCREW A–OUT ONE TURN
SCREW B–IN
FUEL SWITCH – F POSITION
FUEL SWITCH
HEATING
SYSTEM TYPE
DISPLAY F
DISPLAY C
FUEL SWITCH
F
THERMOSTAT BACK
A C
C–IN
C–OUT
1 TURN
B D
IMPORTANT:
SELECTING ºF OR ºC
heating system allows it to maintain accurate temperature control,
minimize swings in the temperature of the room, and efficiently run
the fan.
ADJUST SCREWS THROUGH HOLES
TO SELECT OPERATION DESIRED
HEATING SYSTEM
WARM AIR
FURNACE
HOT WATER
BOILER
ELECTRIC
FURNACE
W Y G
A–IN
A–OUT
1 TURN
A–IN
B–IN
B–IN
B–OUT
1 TURN
FUEL SWITCH
POSITION
F
F
E
a. Use the FUEL SWITCH on the back of the thermostat to set
your new thermostat for the type of fuel that your heating
system uses: F–gas or oil, or E–electricity.
Note:
b. Use the A and B screws on the back of the thermostat to set
E
R
Rc
your new thermostat for your type of heating system. See the
heating system table on the next page to find the correct
settings.
M20145
Note
heating system.
c. The thermostat is set to display the temperature in degrees
Fahrenheit (
degrees Celsius (
d. You can install the batteries and program your thermostat now,
or you can wait until the thermostat is mounted on the wall. To
install the batteries, see the instructions on page 8. To program
the thermostat, see the instructions that begin on page 12.
Setting your thermostat correctly for your type of
This setting enables proper fan operation.
: These screws are factory-set for a warm air, gas, or oil
. If you want to display the temperature in
°F
, adjust screw C out one turn.
°C
6
INSTALLATION 69-0654-5
Heating system table
: Setting the screw “out one turn” means turning the screw 360° counter-clockwise, or one complete turn.
Note
Type of system Screws A and B Fuel switch
Warm air, gas, or oil heating system with an efficiency rating under 90%.
(The furnace efficiency rating should be on the furnace.)
Use factory setting
A–leave in
F
B–leave in
High-efficiency furnace such as a 90% or greater AFUE (Average Fuel
Utilization Efficiency) unit
Hot water boiler A–out one turn
A–out one turn
B–leave in
F
F
B–leave in
Electric furnace A–leave in
E
B–out one turn
Step 5. Wire the thermostat terminals
Fig. 9
Fig. 10
5/16 in.
(8 mm)
STRIP
R
INSERT
STRAIGHT
UNDER
SCREW HEAD
G
Y
W
M20125
a. Hold the thermostat as shown in Fig. 9.
b. Using the labels on the wires, match the letter of your old
thermostat wire with the corresponding terminal on the back of
your new thermostat.
If the letters on the old thermostat terminals do not match
Note:
the letters on the new thermostat terminals, you might not need
to connect all of the old wires to the new thermostat. See the
wiring cross reference table on page 10 for details.
c. Loosen the terminal screws and slip each wire beneath its
matching terminal (Fig 10).
d. Securely tighten the terminals.
END OF WIRE
VISIBLE HERE
69-0654-5 INSTALLATION
M20126
7
Step 6. Mount the thermostat
M20130
y
Fig. 11 Fig. 12
Step 7. Install the batteries
M20131
a. Align the tabs at the
of the mounting plate (Fig. 11).
top
of the thermostat with the tabs at the
top
b. Press the lower edge of the case to latch the bottom of the
thermostat (Fig. 12).
Fig. 13
IMPORTANT:
operation of the thermostat and heating/cooling system.
Batteries must be installed for programming and
Honeywell recommends using Energizer® batteries.
a. Make sure that the System switch is set in the OFF position.
b. Using a coin, open the battery door as shown in Fig. 13.
c. Install the batteries.
Make sure that the positive and negative terminals are oriented
correctly as marked inside the battery case.
M1719C
REMOVING
BATTERY
DOOR
d. Replace the battery door.
e. Remove the clear plastic label from the digital display.
Fig. 14
✓
Check
our progress
When the batteries are installed correctly, the digital display flashes
all entries once, then begins to flash a default time and the current
temperature (Fig. 14). The flashing continues until you begin to
program the thermostat.
You are now ready to program the thermostat. Go to page 12.
8
INSTALLATION 69-0654-5
Special wiring instructions
A clock thermostat with C or C1 terminals
A clock thermostat has one or two extra wires attached to the C or C1 terminals that allow the clock to operate. These
wires are not used during the installation of your new 3300 thermostat and must be insulated from each other to avoid
damaging your electrical circuit.
a. Make sure that power to the heating/cooling system is
b. Locate the wires that are connected to the clock terminals marked C or C1.
c. As you disconnect the wires, do not allow these wires to touch.
turned off
.
d. Wrap the wires
e. Place the wires where they will not interfere with the operation of the new thermostat.
You will not connect these wires to your 3300 thermostat.
f. Continue with the installation as instructed on page 4 at step 2e.
separately
, using electrical tape to insulate the wires.
Six or more wires
If your old thermostat has six or more wires (excluding clock wires attached to the C or C1 terminals), your heating/cooling
system is most likely a variation of a heat pump or multistage system. Your 3300 thermostat will
systems and should be returned to the place of purchase. See the compatibility table on page 2 for information about which
programmable thermostat
work with your system.
WILL
work with such
NOT
Three thermostat wires
If you have three wires for heating only and can operate the fan using the old thermostat’s fan switch, the 3300 thermostat
will work with your system. Continue the installation procedure on page 4, step 2e.
If you have a three-wire heating-only system and cannot operate the fan using the old thermostat’s fan switch, the 3300
thermostat will probably
work with your system. Contact your heating contractor for installation assistance.
NOT
Wires that are not connected to the old thermostat
If there are extra wires that do not connect to your old thermostat, do not label them. You will not connect these wires to
your new thermostat. Tape off the wires with electrical tape and place them where they will not interfere with the operation
of the new thermostat. Continue the installation procedure on page 4, step 2e.
69-0654-5 INSTALLATION
9
M20127
JUMPER (FACTORYINSTALLED). REMOVE
IF 5-WIRE SYSTEM
R
R
c
WY G
Five wires connected to the old thermostat
Your new thermostat has a factory-installed metal jumper between the R and Rc terminals (Fig. 15). Remove the jumper
before wiring the R and Rc terminals.
Fig. 15
Old thermostat terminals that do not match new thermostat terminals
Use the table below to wire the new thermostat.
Old thermostat
terminal
Connect to new
thermostat terminal Description
R, RH, 4, V R* Power
Rc, R Rc* Power for cooling
, H W Heat
W, W
1
Y, Y
, M Y Cooling
1
G, F G Fan
O Do not continue
B
installation
Changeover in cool (O terminal) or changeover in heat (B terminal).
You have a single stage heat pump or zoning system. See page 2 for an
alternate thermostat model.
C, X, B Do not connect Transformer common.
, H
W
2
2
Y
2
*Remove factory-installed jumper between R and Rc terminals in 5-wire systems.
10
INSTALLATION 69-0654-5
Do not continue
installation.
Second stage heat (W2, H2) or second stage cooling (Y2).
You have a multistage heating/cooling system. See page 2 for an alternate
thermostat model.
Programming
1
Faceplate illustration and descriptions
Fig. 16
8
7
6
5 14
4
3
2
1
Set
Clock/Day
Weekday
Schedule
Weekend
Schedule
Fan
Auto On
Descriptions
1 Fan switch–Selects automatic or continuous fan
operation (page 17).
2 Weekend Schedule–Initiates programming of the
weekend heating or cooling schedule (page 15).
3 Weekday Schedule–Initiates programming of the
weekday heating or cooling schedule (page 14).
4 Set Clock/Day–Sets the clock and day (page 12).
9 10
AM
MO TU WE TH FR SA SU
WAKE LEAVE RETURN SLEEP
PM
TempTime
AheadAhead
WarmerWarmer
BackBack
Clear Usage
CoolerCooler
System
Cool Off Heat
HEAT
COOL
SET
TEMPORARY
Run
Program
Hold
Temp
Present
Setting
CT3300 WITH
DOOR CLOSED
Descriptions, continued
5 Clear–Cancels the currently displayed program (page
11
12
13
15
16
17
18
19
M2016
20) and clears the usage counter (page 21).
6 Time Ahead and Back–Sets the time ahead and back
(page 12).
7 Program periods–Current program period or period
being programmed (page 13).
8 Day–Current day or day being programmed.
9 Time–Current time or program time.
10 Temperature–Room or programmed temperature.
11 HEAT/COOL–Indicates if the heating schedule or the
cooling schedule is running or being programmed.
12 TEMPORARY–Displays when a temporary override is
made to the program (page 19).
13 Temp Warmer and Cooler–Raises or lowers the
temperature (page 14).
14 Usage–Displays how long the heating/cooling system
has been running (page 21).
15 Run Program–Returns thermostat to operating mode.
16 Hold Temp–Holds a selected temperature (page 19).
17 Present Setting–Displays the temperature setting for
the current program period (page 20).
18 System switch–Selects Cool, Off, Heat (page 18).
19 Arrow buttons–Allow you to temporarily change the
temperature without opening the faceplate door (page
19).
69-0654-5 PROGRAMMING
11
Step 1. Set the current time and day
Fig. 17
a. Press once.
The time is displayed (Fig. 17).
b. Press and hold or until the current time is
displayed.
Fig. 18
c. Press again.
The day is displayed (Fig. 18).
d. Press and hold or until the current day is
displayed.
Fig. 19
e. Press once.
The current time and day and the current temperature are
displayed (Fig. 19).
Step 2. Learn about the programming features
Your CT3300 thermostat allows you to program schedules for both a heating season and a cooling season.
• During the heating season, you will want to set the normal room temperature higher and the energy-saving
temperature lower.
• The reverse is true during the cooling season—the normal room temperature will be lower and the energy-saving
temperature higher.
For each season, you can set up to four program periods for the weekdays (Monday–Friday), and up to two program
periods for the weekends (Saturday and Sunday). The program periods are defined on the next page.
12
PROGRAMMING 69-0654-5
Program period Description When available
WAKE
The time when you get up and get ready to leave your home.
Weekdays and weekend
You can set the system at a comfortable temperature for this
period.
LEAVE
The time when you are regularly away from home. You can set
Weekdays only
an energy-saving temperature for this period.
RETURN
The time between returning home and going to bed. You can
Weekdays only
set the system at a comfortable temperature for this period.
SLEEP
The time when you are sleeping. You can set an energy-saving
Weekdays and weekend
temperature for this period.
Programming tips
• You do not need to program times and temperatures for all program periods.
If you decide not to program your thermostat, it will automatically control heating at 68°F (20°C) and cooling at 78°F
(26°C), 24 hours a day.
If you decide not to program weekend schedules, the temperature that is programmed for the weekday SLEEP
schedule will remain in effect until the next program period, which begins on Monday morning.
• The temperatures cannot be set any higher than 88°F (31°C) or any lower than 45°F (7°C).
• When pressing the buttons, use the ball of your finger or a soft pencil eraser. Use of sharp fingernails or pencil points
can damage the keypad.
• If you make an error at any time during programming, press . Then press or until you reach
the program period where you left off.
69-0654-5 PROGRAMMING
13
Step 3. Program the heating schedule
a. Write in the times and temperatures that you want to program for your heating schedule.
Heating
Schedule
Suggested
Settings
Weekday
(Mon–Fri)
Weekend
(Sat–Sun)
Program
period
Time
Te m p
Time
Te m p
Time
Te m p
WAKE LEAVE RETURN SLEEP
6:00
AM
70°F (21°C)
8:00
62°F (16.5°C) 70°F (21°C) 62°F (16.5°C)
b. Set the System switch to HEAT.
c. Press once.
A blank schedule is displayed (Fig. 20).
d. Set the Monday–Friday WAKE time by pressing or
until the desired time is displayed (Fig. 21).
e. Set the Monday–Friday WAKE temperature by pressing
or until the desired temperature is displayed.
f. Press to display a blank schedule for the next program
period (Fig. 22) and repeat steps d. through f. for each weekday
program period.
AM
6:00
PM
10:00
PM
Fig. 20
Fig. 21
Fig. 22
14
PROGRAMMING 69-0654-5
g. Press until the weekend schedule is displayed (Fig.
23).
h. Set the Saturday and Sunday WAKE time by pressing
Fig. 23
or until the desired time is displayed.
i. Set the Saturday and Sunday WAKE temperature by pressing
or until the desired temperature is displayed
(Fig. 24).
j. Press again to display a blank schedule for the SLEEP
program period and repeat steps h. through j. to set the
program.
Step 4. Program the cooling schedule
a. Write in the times and temperatures that you want to program for your cooling schedule.
Cooling
Schedule
Suggested
Settings
Weekday
(Mon–Fri)
Weekend
(Sat–Sun)
Program
period
Time
Te m p
Time
Te m p
Time
Te m p
WAKE LEAVE RETURN SLEEP
6:00
AM
78°F (25.5°C)
8:00
AM
85°F (29.5°C) 78°F (25.5°C) 82°F (28°C)
6:00
PM
10:00
Fig. 24
PM
69-0654-5 PROGRAMMING
15
b. Set the System switch to COOL.
)
p
g
p
g
p
c. Repeat steps 3c. through 3k. to program the weekday and weekend cooling schedule.
Step 5. Check out the system
Verify that your heating system works
a. Set the System switch to HEAT and the Fan switch to AUTO.
b. Press until the setting is 10°F (6
tem
erature (Fig. 25).
Your heating system should start and the fan should run after a
short delay.
c.
Press until the settin
tem
erature.
Your heating system should shut off.
is 10°
above room
°C
F (6
°C) below room
Verify that your cooling system works
IMPORTANT
conditioner, do not operate the cooling system when the
temperature outdoors is below 50°F (10°C).
d. Set the System switch to COOL and the Fan switch to AUTO.
e.
Press until the settin
tem
Your cooling system and fan should start.
Note
delay up to 5 minutes before turning on the air conditioner. This
delay protects the compressor.
: To avoid damaging the compressor in the air
F (6
is 10°
erature (Fig. 26).
: When the cooling setting is changed, the thermostat may
°C) below room
Fig. 25
Fig. 26
16
PROGRAMMING 69-0654-5
f. Press until the setting is 10°F (6
p
erature.
tem
Your cooling system and fan should stop.
g. Set the System switch to OFF and the Fan switch to AUTO.
The cooling system and fan should be off.
°C) above room
Operation
Change the clock for Daylight/Standard Time
a. Press once.
The time is displayed.
b. Press and hold or until the correct time is displayed.
c. Press once.
The current time and day and the current temperature are displayed.
Set the Fan and System switches
The switches on the bottom of the thermostat faceplate (Fig. 16 page 11) control the operation of your fan and the heating
and cooling system. Set the Fan switch first and then set the System switch.
Switch Setting Result
Fan Auto A single-speed fan turns on automatically with the air conditioner or furnace.
A two-speed fan usually runs on high with the air conditioner and on low with the furnace.
Auto is the normal setting for most homes.
On The fan runs continuously. Use this setting for improved air circulation during special occasions
or for more efficient air cleaning.
: In a heat-only system, the fan runs continuously only if the fan wire has been connected to
Note
the G terminal on the back of the thermostat.
69-0654-5 OPERATION
17
Switch Setting Result
System Cool The thermostat controls your air conditioning system.
Off Both the heating and air conditioning systems are off.
Heat The thermostat controls your heating system.
Replace the batteries
As the batteries run low, your thermostat shows the following in the digital display:
If you see: Batteries are: You should:
Flashing “bAt Lo” Low Replace the batteries as soon as possible, within the month.
Steady “bAt Lo” Almost dead Replace the batteries immediately. Your heating/cooling system is not operating.
Blank display Dead Replace the batteries immediately. Your heating/cooling system is not operating.
a. Make sure that the System switch is set in the OFF position.
b. Open the battery door.
c. Press on the left side of the batteries to remove them.
d. Install the new batteries.
Make sure that the positive and negative terminals are oriented correctly as marked inside the battery case.
: If you insert the new batteries within 20–30 seconds of removing the old ones, you will not have to reprogram
Note
the thermostat. However, if the display is blank, the batteries are dead or incorrectly installed and you will have to
reprogram. See page 12 to begin reprogramming.
e. Close the battery door and set the System switch to HEAT or COOL.
If “bAt Lo” continues to display after replacing the batteries, set the System switch to OFF, insert the batteries
Note:
backwards, wait for five to ten seconds, and return the batteries to their correct orientation. Then see page 12 to begin
reprogramming.
IMPORTANT
battery power in the thermostat. If you are leaving home for longer than a month, change the batteries before leaving to
prevent the system from shutting down due to lack of power.
18
OPERATION 69-0654-5
: Replace the batteries once a year to prevent the heating/cooling system from shutting down due to lack of
Override the program settings
Make sure the System switch is set to either HEAT or COOL
Note:
before making any changes to the schedule.
Change the temperature temporarily
Press or until the desired temperature is displayed.
The TEMPORARY indicator is displayed indicating that the change
is temporary (Fig. 27).
: A temporary change to the temperature lasts for the current
Note
program period only. The heating/cooling schedule that you
programmed resumes when the next scheduled program period is
reached. To cancel the temporary change before the next
scheduled program period, press .
Hold a temperature indefinitely
Use the Hold Temp feature when you want to maintain a constant
temperature indefinitely, such as when you go on vacation.
a. Press .
“HLd” is displayed (Fig. 28).
b. Press or until the desired temperature is
displayed.
The display shows the SET temperature for a few seconds and
then resumes reading the current room temperature.
: To cancel the hold, press .
Note
Fig. 27
Fig. 28
69-0654-5 OPERATION
19
Check the current programmed temperature
Press to display the temperature that is programmed for the
current program period. The SET indicator displays briefly along with
the programmed temperature (Fig. 29). The display then returns to
the room temperature.
Check programs
Press repeatedly to display the times and temperatures that
you programmed for the weekdays (Monday–Friday).
Press repeatedly to display the programmed times and
temperatures for the weekend (Saturday and Sunday).
Press to resume the program.
Cancel a program
a. Press or until the desired program is displayed
(Fig 30).
b. Press .
A blank program schedule is displayed and the program is
canceled (Fig. 31).
Fig. 29
Fig. 30
Fig. 31
20
OPERATION 69-0654-5
Check how long heat/air conditioning has been running
To display the length of time that the heat or air conditioning has been running:
• Since 12:00 AM today, press once (Fig. 32).
• Since 12:00 AM yesterday, press twice (Fig. 33).
• Since installation or since the last time you reset the
cumulative usage counter (see below), press three
times.
Reset the cumulative usage counter to zero
To clear the cumulative usage counter and start over at zero hours:
Fig. 32
Fig. 33
a. Press three times to display the cumulative reading.
b. Press to set the counter to zero (Fig. 34).
c. Press .
Fig. 34
Change a program permanently
Follow the steps for programming the heating schedule or
programming the cooling schedule on pages 14 and 15.
69-0654-5 OPERATION
21
Frequently asked questions
prog
y
prog
If... Then...
Display will not come on • Make sure the batteries are fresh and installed correctly.
• Set the System switch to OFF. Remove the batteries and then insert them
backwards for five to ten seconds to reset the thermostat. Replace the
batteries correctly. The display should come on.
Temperature display will not go
lower than 45°F (7°C) or higher
than 88°F (31°C) during
programming
Display shows flashing or steady
“bAt Lo”
Temperature change occurs at the
wrong times
Heating will not come on • Check that the System switch is set to HEAT.
• You have reached the temperature limit. The setting range is 45°F–88°F
(7°C–31°C).
• The batteries are low; replace them as soon as possible. See page 18 for
instructions.
• If “bAt Lo” continues to display after replacing the batteries, set the System
switch to OFF and insert the batteries backwards for five to ten seconds.
Then replace the batteries correctly. The display should come on.
•
Check the
indications are correct. Make sure the current da
ram if necessary.
Re
• Check the system fuse or circuit breaker and replace or reset if necessary.
• Check for correct wiring and good connections.
• If display is blank or displays “bAt Lo,” install fresh batteries.
• Allow time for the furnace to heat up and the fan to come on before checking
for heat at the register.
• If the temperature setting is higher than the current room temperature and
the SYSTEM ON arrow is displayed, the thermostat is operating correctly.
Contact a heating contractor for assistance.
ram times for the period in question. Be sure that AM and PM
and time are correct.
22
FREQUENTLY ASKED QUESTIONS 69-0654-5
p
If... Then...
Cooling will not come on • Check that the System switch is set to COOL.
• Check the system fuse or circuit breaker and replace or reset if necessary.
• Check for correct wiring and good connections.
• If display is blank or says “bAt Lo,” install fresh batteries.
• The thermostat has a built-in time delay on cooling. Allow 5 to 10 minutes
after changing the setting before the air conditioner starts.
• If the temperature setting is lower than the current room temperature and the
SYSTEM ON arrow is displayed, the thermostat is operating correctly.
Contact an air conditioning contractor for assistance.
The house is too warm or too cool
• Press to check the current temperature setting.
• If desired, change the temperature setting. See page 19 for instructions.
The furnace cycles too frequently or
• Adjust the screws on the back of the thermostat as instructed on page 7.
the system cycle length is too short
or too long
The thermostat’s current setting
does not match the displayed room
temperature to within
lus or minus
1°
• Plug the wiring hole in the wall behind the mounting plate with insulation to
prevent drafts that might adversely affect thermostat operation.
• Be aware that it is normal for the current setting and the displayed room
temperature to differ on occasion.
• During recovery from setback or setup, setting and displayed room
temperatures may differ for up to 30 minutes after recovery period.
Customer assistance
For all questions concerning this thermostat, please read and follow the instructions. If you need additional assistance, call
Honeywell Customer Relations at 1-800-468-1502, Monday–Friday, 7:00
www.honeywell.com/yourhome
. Before you call, please have the following information available:
• Thermostat model number and serial code (located under the battery cover)
• Type of heating/cooling system (hot water, warm air, oil, gas, etc.)
• Number of wires connected to the thermostat
NOTICE:
69-0654-5 FREQUENTLY ASKED QUESTIONS
This equipment is a Class B digital apparatus, which complies with Canadian Radio Interference Regulations, CRC c.1374.
–5:30 PM Central Time, or visit us at
AM
23
Limited 1-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 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 Inc. USA Honeywell Canada:
Dock 4 — MN10-3860 Honeywell Limited/Honeywell Limitée
1885 Douglas Drive North 35 Dynamic Drive
Golden Valley, MN 55422-3992 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 our Customer Relations Center, Honeywell Inc., 1885 Douglas Dr. N.,
Golden Valley, MN 55422-3992, or call 1-800-468-1502, Monday–Friday, 7:00 a.m. to 5:30 p.m., Central Time. In Canada, write Retail
Products ON30 Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9.
Home and Building Control
Honeywell
1985 Douglas Drive North
Golden Valley, MN 55422Z
69-0654-5 Rev. 9-01
Printed in U.S.A.
Home and Building Control
Honeywell Limited–Honeywell Limitée
35 Dynamic Drive
Scarborough, Ontario
M1V 4Z9
www.honeywell.com/yourhome
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