Honeywell Thermostat CT3400 User Manual

6 9 - 0 7 3 3 - 3  
I N S T  
P R O  
H
M o d e l C T 3 4 0 0 / C T 3 4 5 5  
P r o g r a m m a b l e H e a t a n d / o r C o o l  
T A  
T H  
L o w V o l t a g e ( 2 0 t o 3 0 V a c ) T h e O r m o G s t P a R t R a A  
W e e k d a y / S a t u r d a y / S u n d a y  
TYPICAL ENERGY SAVINGS FOR REPRESENTATIVE CITIES IN THE U.S. AND CANADA  
Savings for Once-A-Day  
10°F (5°C) decrease  
Savings for Twice-A-Day  
10°F (5°C) decrease*  
Savings for 5°F (3°)  
summer increase  
30%  
28%  
26%  
24%  
22%  
20%  
18%  
16%  
14%  
12%  
10%  
8%  
6%  
4%  
2%  
Louisville  
Portland  
Wash., D C  
Los Angeles  
Minneapolis Edmonton  
Calgary  
Halifax  
Vancouver  
Buffalo  
Cleveland  
Milwaukee  
Denver  
Des Moines Chicago  
Omaha  
Salt Lake  
City  
Boston  
Cincinnati  
Kansas City Philadelphia  
St. Louis  
New York  
San  
Francisco  
Dallas  
Atlanta  
San Diego  
St. Paul  
Montreal  
Ottawa  
Regina  
Winnipeg  
Moncton  
North Bay  
Quebec  
Detroit  
Pittsburgh  
Indianapolis  
Seattle  
Columbus  
Toronto  
St. John's  
*Based on 10°F (5°C) decrease—(5°F [3°C] decrease  
gives approximately 55 percent of these savings).  
M2416A  
J.S. Rev. 4-97 ©Honeywell Inc. 1997 Printed in U.S.A. Form Number 69-0733—3  
 
Table Of Contents  
STEP 1 Prepare For Installation.................................................................................................... 2  
STEP 2 Remove Old Thermostat .................................................................................................. 4  
STEP 3 Before You Program ......................................................................................................... 6  
Install the Batteries.................................................................................................................... 6  
Adaptive Intelligent Recovery™ Selection ............................................................................. 7  
STEP 4 Program The Thermostat ................................................................................................. 9  
STEP 5 Mount Thermostat Wallplate.......................................................................................... 16  
STEP 6 Adjust System On-Time, Clock Display, as Required ................................................ 18  
STEP 7 Adjust Fan Operation Switch, as Required.................................................................. 20  
STEP 8 Wire Wallplate Terminals ............................................................................................... 21  
STEP 9 Mount The Thermostat ................................................................................................... 24  
STEP 10 Check Thermostat Operation After Programming and Installing ........................... 25  
STEP 11 Set the Fan and System Switches .............................................................................. 28  
Troubleshooting Guide ................................................................................................................ 30  
Index............................................................................................................................................... 34  
Limited One-Year Warranty ......................................................................................................... 36  
1
69-0733—3  
STEP 1 Prepare For Installation  
Check Table 1 to make sure this thermostat is compatible with your system. If not, return to retailer.  
For more information, call Honeywell Customer Assistance, toll-free 1-800-468-1502.  
Table 1. Compatibility Chart.  
System Type  
Compatible with CT3400/3455  
Gas—Standing Pilot  
Gas—Electronic Ignition  
Gas-Fired Boilers  
Gas—Millivolt  
Oil-Fired Boilers  
Oil-Fired Furnace  
Electric Furnace  
Electric Air Conditioning  
Baseboard Electric (120/240 line volt)  
Heat Pumps/Multistage Equipment  
Yes  
Yes  
Yes  
1
No  
1
Yes  
Yes  
Yes  
Yes  
No  
No  
Not compatible with any 120/240 volt circuit.  
1
Compatible with 2-wire Honeywell and Taco zone valves. Not compatible with 3-wire zone valves  
or 2-wire White Rodgers no. 1361 valves.  
Download from Www.Somanuals.com2. All Manuals Search And Download.  
69-0733—3  
Acquire tools and items as needed (below).  
CROSS-RECESSED  
SCREWDRIVER  
HAND OR POWER  
DRILL WITH 3/16 INCH  
DRILL BIT, IF NEEDED, TO  
DRILL HOLES IN WALL  
MASKING TAPE, IF  
WIRE CUTTER/STRIPPER OR SHARP  
KNIFE, IF NEEDED, TO STRIP WIRES  
NEEDED, TO LABEL WIRES  
AS DISCONNECTED FROM  
OLD THERMOSTAT  
LEVEL, IF NEEDED, TO LEVEL  
M878B  
THERMOSTAT FOR APPEARANCE  
3
69-0733—3  
STEP 2 Remove Old Thermostat  
Test to make certain that your heating and  
cooling systems are working properly. If either  
does not work, contact your local heating/air  
conditioning dealer. To avoid compressor dam-  
age, do not operate the cooling system when  
outdoor temperature is below 50°F (10°C).  
Turn off power to system at the furnace, or  
at the fuse/circuit breaker panel.  
Disconnect wires from old thermostat or  
subbase. As you disconnect each wire, use  
masking tape to label it with the old terminal  
designation.Ifthereare  
WIRES THROUGH  
WALL OPENING  
only two wires, they do  
not need to be labeled.  
Wrap wires around  
pencil to keep them  
from falling back into  
the wall, as shown.  
Carefully unpack your new thermostat and  
wallplate; save package of screws, instructions  
and receipt.  
M5136  
Remove the cover from the old thermostat. If  
it does not snap off when pulled firmly from the  
bottom, check for a screw used to lock on the  
cover.  
Loosen screws holding thermostat to sub-  
base, wallplate or wall, and lift away.  
Replacing a clock thermostat that has C or  
C1 clock terminals?  
If you are replacing a Honeywell Chronotherm®  
Thermostat, you may find one or two wires that  
go to the C or C1 clock terminals on the  
Chronotherm® Thermostat wiring wallplate. Do  
4
69-0733—3  
 
which programmable thermostats will work with  
your system, call Honeywell Customer Assis-  
tance at 1-800-468-1502.  
notallowthemtotouch, oryoucandamageyour  
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 des-  
ignation labels of the remaining wires.  
Three thermostat wires?  
If you have three wires for heating only and can  
operate the fan using the fan ON switch, this  
thermostat will work with your system. However,  
some hot water (zoned) heating systems have  
three thermostat wires. The thermostat will not  
workwithoutinstallinganisolatingrelayonthese  
systems. For details, call Honeywell Customer  
Assistance at 1-800-468-1502.  
Six or more wires?  
If there are six or more wires (excluding clock  
wires attached to terminals), you most likely  
have a variation of a heat pump or multistage  
system. The thermostat is not compatible with  
such systems so return the product to the place  
of purchase. If you would like information about  
5
69-0733—3  
STEP 3 BeforeYou Program  
If you insert new batteries within 20 to 30 sec-  
onds of removing the old ones, you will not have  
to reprogram the thermostat. However, if the  
display is blank, the batteries are dead or  
incorrectly installed. In this case, you will  
have to reprogram. See pages 13 through 15  
to reprogram. If you do not reprogram, the  
Install the Batteries  
IMPORTANT: Three AA alkaline batteries are  
included with the thermostat. Batteries must  
be installed for programming and operation of  
the thermostat and heating/cooling system.  
factory-prepro-  
BACK OF THERMOSTAT  
Install the batteries in back of the thermostat  
as shown, making sure positive (+) terminals all  
face toward the right.  
grammed  
settings will be  
in effect, as  
shown in  
chart on  
pages 11  
and 12.  
As the batteries are running low, a REPL BAT  
indicator will flash for 1 to 2 months before bat-  
teries run out completely. Replace the batteries  
as soon as possible after the indicator starts  
flashing.  
INSTALL 3 AA ALKALINE BATTERIES AS SHOWN,  
POSITIVE (+) TERMINALS TOWARD RIGHT.  
M2589  
6
69-0733—3  
 
IMPORTANT: Although the thermostat has a  
low battery indicator, replace the batteries  
onceayeartopreventleakageandtoprevent  
the thermostat and heating/cooling system  
from shutting down due to lack of battery  
power.  
Adaptive Intelligent Recovery™  
Selection  
Before you program your thermostat, you must  
decide if you want to leave the thermostat at  
the factory-set Adaptive Intelligent Recovery™  
setting, or adjust it to conventional recovery. If  
youchooseconventionalrecovery, adjustscrew  
3A (on the back of the thermostat) by turning out  
one turn.  
As a precaution when leaving home for longer  
thanamonth, changebatteriesbeforeyouleave  
topreventsystemfromshuttingdownduetolack  
of battery power.  
WithAdaptiveIntelligentRecovery™,yourhome  
gradually reaches the comfort temperature you  
set at the exact time programmed into the ther-  
mostattoachievemaximumenergysavingsand  
comfort.  
Use fresh alkaline batteries; nonalkaline bat-  
teries do not last as long, and may leak, causing  
damage to the thermostat or the wall surface.  
We recommend Energizer® batteries.  
7
69-0733—3  
More about Adaptive Intelligent Recovery™…  
for the thermostat to adjust to the weather, your  
lifestyle, home construction and heating/cooling  
system.  
This thermostat is actually a small but powerful  
computer. Whencalculatingtheexacttimetoturn  
onyourfurnaceorairconditioner, itconsiders:(1)  
air temperature, (2) the temperature of  
the wall and (3) when you want the comfort  
temperature established.  
Withconventionalrecovery,theprogrammedtime  
marks the start of the time your furnace or air  
conditionercomesontostartrecovery;therefore,  
you should program the start time to be earlier  
than the desired comfort time. The best starting  
time varies as the seasons change, but 30  
minutes is a good head start time to use.  
During recovery, the thermostat increases the  
controltemperaturegraduallyandturnstheequip-  
ment on and off several times before reaching  
your comfort time to save energy by avoiding  
overshooting the comfort temperature. You can  
see the current control temperature anytime dur-  
ing recovery by pressing the CURRENT SET-  
TING key.  
NOTE:Ifyouadjustscrew  
SET  
PT  
PM  
TUE  
DAYTIME  
3Aforconventionalre-  
covery, a indicator  
appears in the lower  
INDICATES  
THERMOSTAT IS SET FOR  
rightcornerofthether-  
mostatdisplayasare-  
CONVENTIONAL RECOVERY  
This smart control learns from experience. Each  
day it checks how closely it hit the target and  
adjusts the recovery start time accordingly. It  
normally takes four to eight days after installation  
M2483  
minder that you are no longer using the Adap-  
tive Intelligent Recovery™ feature.  
8
69-0733—3  
 
STEP 4 Program The Thermostat  
After the batteries are installed, the thermostat  
can be easily programmed in your hand before  
it is installed on the wall.  
work or school. (This will be a higher tem-  
perature during heating season, or a lower  
temperature during cooling season.)  
DAYTIME is the time period you can set for an  
energy-saving temperature while you are  
awayatworkorschool.(Thiswillbealower  
temperature during heating season, or a  
highertemperatureduringcoolingseason.)  
EVENING is the time period you want the  
house at a comfortable temperature for  
activities before bedtime. (Again, higher  
heat or lower cool.)  
If you would prefer to program the thermostat  
after it is installed on the wall, skip to page 16,  
and return later to this programming section.  
The following personal programming chart  
(pages 11 and 12) may be helpful when plan-  
ning your program schedule of time and tem-  
perature settings for various times of the day.  
NIGHT is the time period you can set for an  
energy-saving temperature while you are  
sleeping. (Again, lower heat or higher cool.  
Although for more comfortable sleeping,  
some people choose not to raise the cool  
temperature during the night.)  
Four time periods are available—MORNING,  
DAYTIME, EVENING and NIGHT. Each  
period has its own setting key.  
MORNING is the time period you want the  
houseatacomfortabletemperature when  
you get up and while you get ready for  
9
69-0733—3  
You will set one schedule for weekdays, one for  
Saturday, and another for Sunday, because  
your requirements will probably be different for  
each.  
Before programming, remove the clear plastic  
overlay covering the display.  
When pressing the keys, use the ball of your  
finger or a soft pencil eraser. Use of sharp finger-  
nails or pencil points can damage the keypad.  
Fill in the times and temperatures you desire for  
weekdays, Saturday, Sunday. The factory-pre-  
programmed time and temperature settings are  
shown in parentheses. If you decide not to  
program the thermostat, it automatically con-  
trolsto thesesettings. Thethermostatrequiresa  
time and temperature program for the MORN-  
ING period. You can program DAYTIME and  
EVENING, or leave them blank. You can also  
changeNIGHTorcancelit(seepage15),asyou  
please.  
If at any time during programming you make an  
error, just press the RUN PROGRAM key, and  
continue again at the step where you left off.  
10  
 
69-0733—3  
PROGRAMMING  
Personal Programming Chart  
Weekday Program  
1
1
START  
TIME  
HEATING  
COOLING  
PERIOD  
MORNING  
DAYTIME  
EVENING  
NIGHT  
TEMPERATURE  
_____________________  
TEMPERATURE  
(6:00 AM)  
(70°F [21°C])  
(78°F [26°C])  
_____________________  
______________  
______________  
______________  
______________  
_____________  
_____________  
(10:00 PM)  
(60°F [16°C])  
(78°F [26°C])  
_____________________  
_____________________  
_____________________  
Saturday Program  
HEATING  
1
1
START  
TIME  
COOLING  
PERIOD  
MORNING  
DAYTIME  
EVENING  
NIGHT  
TEMPERATURE  
_____________________  
TEMPERATURE  
_____________________  
(6:00 AM)  
(70°F [21°C])  
(78°F [26°C])  
_____________________  
______________  
______________  
______________  
______________  
_____________  
_____________  
(78°F [26°C])  
_____________________  
(10:00 PM)  
(60°F [16°C])  
_____________________  
_____________________  
11  
69-0733—3  
Sunday Program  
1
1
START  
TIME  
HEATING  
COOLING  
PERIOD  
MORNING  
DAYTIME  
EVENING  
NIGHT  
TEMPERATURE  
_____________________  
TEMPERATURE  
_____________________  
(6:00 AM)  
(70°F [21°C])  
(78°F [26°C])  
_____________________  
______________  
______________  
______________  
______________  
_____________  
_____________  
(78°F [26°C])  
_____________________  
(10:00 PM)  
(60°F [16°C])  
_____________________  
_____________________  
1
The temperatures cannot be set any higher than 88°F (31°C) or any lower than 45°F (7°C).  
NOTE: The factory-preprogrammed time and temperature settings are shown in parentheses.  
12  
 
69-0733—3  
PROGRAMMING  
When programming your new thermostat, use this guide. Batteries are required for programming  
and operation.  
SET PRESENT DAY  
Set  
Press and release  
then  
then  
until present day shows.  
Present  
Day  
Day/Time  
SET PRESENT TIME  
Press and release  
a
Set  
Time  
until present time shows.  
Present  
Day/Time  
HEATING PROGRAM  
With system switch at HEAT, press and release  
a
a
Morning  
Time  
Temp  
. Use  
and  
to  
program Mon-Fri MORNING time and temperature. Repeat using DAYTIME, EVENING, NIGHT  
keys.  
a
Day  
Time  
Morning  
For Saturday, press  
a
to SAT. Press and release  
; use  
and  
Temp  
to program Saturday morning time and temperature. Repeat using DAYTIME, EVENING,  
NIGHT keys.  
Day  
For Sunday, press  
to SUN. Repeat steps as you did for SAT.  
13  
69-0733—3  
COOLING PROGRAM  
Thetimesyousetforheatingremainthesameforcooling;youonlyneedtoprogramthetemperatures.  
a
Morning  
Temp  
With system switch at COOL, press and release  
. Use  
toprogramMon-Fri  
MORNING temperature. Repeat using DAYTIME, EVENING, NIGHT keys.  
a
Morning  
Temp  
Day  
For Saturday, press  
program  
to SAT. Press and release  
; use  
to  
Saturday morning temperature. Repeat using DAYTIME, EVENING, NIGHT keys.  
Day  
For Sunday, press  
to SUN. Repeat steps as you did for SAT.  
After programming, adjust fan and system switches as desired.  
Run  
Program  
Press and release  
a Press on  
to start the program.  
to move number back; press on  
to move number ahead.  
14  
 
69-0733—3  
PROGRAMMING  
For operating or making changes, use this guide.  
a
Temp  
Temporarily Change temperature for current period only—  
; TEMPORARY indicator  
shows on display, and cancels itself at next scheduled change. To cancel sooner, you may  
Run  
Program  
press  
.
a
Hold  
Temp  
Temp  
Hold a temperature indefinitely (such as on vacation)—  
,
Hold appears  
Run  
Program  
on display; to cancel, press  
.
Current  
Setting  
Check current temperature setting—  
.
Daytime  
Evening  
Night  
Cancel a program—Press and hold  
,
or  
three seconds to cancel.  
Morning cannot be cancelled (only changed).  
Permanently Change a program—Repeat steps under Heating Program (page 13) or Cooling  
Program (page 14), as applicable.  
Run  
Program  
Return to normal program or start program—  
a Press on  
.
to move number back; press on  
to move number ahead.  
15  
69-0733—3  
STEP 5 Mount Thermostat Wallplate  
Position wallplate on wall. Level the wall-  
plate for appearance only. Use a pencil to  
mark the two mounting holes that best fit the  
application.  
WALL  
WIRES THROUGH  
WALL OPENING  
WALL  
ANCHORS  
(2)  
MOUNTING  
1
HOLES (3)  
MOUNTING  
SCREWS (2)  
WALLPLATE  
1
USE THE TWO MOUNTING HOLES THAT BEST FIT APPLICATION.  
M5932A  
16  
 
69-0733—3  
INSTALLATION  
Remove wallplate from wall, and drill  
3/16 inch holes in wall (if drywall) as marked.  
For firmer material such as plaster or wood,  
drill 7/32 inch holes. Gently tap anchors  
(provided) into drilled holes until flush with  
the wall.  
LEVEL  
Reposition wallplate over holes, pulling  
wires through wiring opening. Loosely insert  
two mounting screws into holes.  
M611B  
Level for appearance only; thermostat  
functions properly even when not level.  
Tighten mounting screws.  
17  
69-0733—3  
STEP 6 Adjust System On-Time, Clock Display,  
As Required  
The thermostat on-time is factory-set for a  
warm air, gas or oil heating system. If you are  
installing it on another type of system, the on-  
time must be adjusted accordingly by setting  
screws 1A and 1B on the back of the thermo-  
stat, using the heating system table in the  
illustration as a guide. The system on-time  
should be optimized with the type of system to  
minimize room temperature swings. Setting the  
screw out one turn means turning the screw  
approximately 360° counterclockwise, orabout  
one complete turn.  
First, turn both screws in completely, then ad-  
just for system type:  
• Hot Water or High Efficiency—Set at the  
GravityAir/Watersetting(1A—outoneturn,  
1B—out one turn).  
• Gas/Oil Warm Air—Set at the Hot Water or  
High Efficiency setting (1A—leave in, 1B—  
out one turn).  
• Electric Warm Air—Leave at the Gas/  
Oil Warm Air setting (1A—leave in, 1B—  
leave in).  
In the unlikely event that you want longer fur-  
nace on-time, readjust screws 1A and/or 1B as  
follows:  
18  
 
69-0733—3  
INSTALLATION  
RECOVERY  
SELECTION  
3A  
IMPORTANT: When using a high efficiency  
furnace such as a 90% or greater AFUE  
(Average Fuel Utilization Efficiency) unit,  
leave screw 1A in and screw 1B out one turn.  
IN  
ADAPTIVE  
INTELLIGENTTM  
(FACTORY SETTING)  
OUT  
1 TURN  
CONVENTIONAL  
BACK OF THERMOSTAT  
The thermostat is set to display the time as  
a 12-hour clock and the temperature in degrees  
Fahrenheit. If a 24-hour clock (e.g., military  
time) or degrees Celsius readings are desired,  
adjust screws 2A and 2B as necessary using  
the illustration as a guide.  
3A 1A 1B  
2A 2B  
For an explanation of the Recovery Selec-  
tion screws (3A), see pages 7 and 8.  
1A  
1B  
2A  
2B  
SYSTEM  
DISPLAY  
12 hr./ °F  
OUT  
OUT  
GRAVITY  
AIR/WATER  
OUT  
1 TURN  
OUT  
1 TURN  
(FACTORY SETTING)  
HOT  
24 hr./ °F  
24 hr./ °C  
IN  
IN  
OUT  
IN  
WATER  
OUT  
OR HIGH  
EFFICIENCY  
(90%+AFUE)  
IN  
IN  
1 TURN  
IN  
GAS/OIL  
WARM AIR  
12 hr./ °C  
OUT  
IN  
(FACTORY SETTING)  
OUT  
1 TURN  
ELECTRIC  
WARM AIR  
IN  
M 618A  
19  
69-0733—3  
STEP 7 Adjust Fan Operation Switch, As Required  
BACK OF THERMOSTAT  
The thermostat fan operation switch is fac-  
tory-set in the left (NON ELEC) position. This is  
the correct setting for most systems. If your  
system is an electric furnace, set the switch to  
the right (ELEC) position. The ELEC position  
allows the fan to turn on immediately with the  
heating or cooling system if the G terminal is  
connected to a fan relay.  
NOTE: Either the switch must be set before the  
batteries are installed, or the left battery  
4A  
must be removed to access the switch.  
FAN OPERATION SWITCH  
(SHOWN IN NON ELEC POSITION)  
M619C  
20  
69-0733—3  
 
INSTALLATION  
STEP 8 Wire Wallplate Terminals  
NOTE: All wiring must comply with local codes  
and ordinances. If unsure about household  
wiring procedures, call your local heating/air  
conditioning contractor.  
Loosen the terminal screws and slip each  
wire beneath its matching terminal. Either  
straight or wraparound wiring connections are  
acceptable (see illustration). Tighten terminals.  
Refer to masking tape labels you placed on  
wires when you removed your old thermostat.  
Plug the hole in the wall with insulation to  
help prevent drafts from adversely affecting  
thermostat operation.  
Match the letter of your old thermostat wire  
with the terminal of the corresponding letter on  
your new thermostat. Refer to illustrations on  
pages 22 and 23.  
FOR WRAPAROUND–  
STRIP 7/16 IN. (11MM)  
FOR STRAIGHT INSERTION–  
STRIP 5/16 IN. (8MM)  
In 5-wire installations only, be sure to re-  
move the factory-installed jumper connect-  
ing terminals R and Rc.  
M2486  
21  
69-0733—3  
4-WIRE HEAT/COOL (JUMPER INTACT)  
2-WIRE HEAT-ONLY (JUMPER INTACT)  
THERMOSTAT  
THERMOSTAT  
R
R
W G  
R
C
Y
W G  
R
C
Y
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.  
M614A  
M612A  
22  
69-0733—3  
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3-WIRE HEAT ONLY (JUMPER INTACT)  
5-WIRE HEAT/COOL (JUMPER REMOVED)  
THERMOSTAT  
THERMOSTAT  
R
W G  
R
C
Y
R
W G  
R
C
Y
HEATING  
RELAY OR  
VALVE COIL  
COOLING  
CONTACTOR  
COIL  
HEATING  
RELAY OR  
VALVE COIL  
FAN  
RELAY  
FAN  
RELAY  
1
1
1
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS  
AND OVERLOAD PROTECTION AS REQUIRED.  
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS  
AND OVERLOAD PROTECTION AS REQUIRED.  
M 615A  
M613A  
23  
69-0733—3  
STEP 9 Mount TheThermostat  
AM  
MON  
DAYTIME  
HEAT ON  
A.  
ENGAGE TABS BETWEEN  
TOP OF THERMOSTAT  
AND WALLPLATE  
B.  
PRESS  
LOWER EDGE  
OF CASE TO  
LATCH  
C.  
SWING COVER OPEN FOR  
CHECKOUT AND PROGRAMMING  
AM  
MON  
DAYTIME  
HEAT ON  
Set  
Current  
Setting  
Present  
Day Time  
Day  
Hold  
Temp  
Morning  
Daytime  
Temp  
Time  
Run  
Program  
Night  
Evening  
Heat On Cool  
On Auto  
Fan  
M5143  
24  
 
69-0733—3  
INSTALLATION  
STEP 10 CheckThermostat Operation After Programming  
And Installing  
HEAT OFF COOL  
HEATING  
Move the system switch to HEAT and  
the fan switch to AUTO.  
Do not check heating system operation  
by jumpering thermostat terminals at  
the primary control, such as the gas  
valve, zone valve, oil burner control.  
This will damage the thermostat. In-  
stead, you could jumper R and W wires  
at the thermostat.  
ON  
AUTO  
FAN  
Press up arrow of key until the setting is  
about 10°F (6°C) above room tempera-  
ture. Heating should start and the fan  
should run after a short delay (immedi-  
ately if fan operation switch is set in  
ELEC position).  
Temp  
M2472  
25  
69-0733—3  
Press down arrow of key until setting is  
about 10°F (6°C ) below room tempera-  
ture.Theheatingequipmentshouldshut  
off.  
Temp  
M2472  
HEAT OFF COOL  
COOLING  
Move the system switch to COOL and  
the fan switch to AUTO.  
To avoid possible compressor damage,  
do not operate the cooling system when  
outside temperature is below 50°F  
(10°C). See compressor manufacturer  
instructions for further information.  
ON  
AUTO  
FAN  
NOTE:Whencoolingsettingischanged,  
thermostat may delay up to five min-  
utes before turning on the air condi-  
tioner. This delay protects the com-  
pressor.  
Press down arrow of key until setting is  
about 10°F (6°C) below room tempera-  
ture. The cooling equipment and fan  
should start.  
Temp  
Press up arrow of key until the setting is  
about 10°F (6°C) above room tempera-  
ture. The cooling equipment and fan  
should stop.  
Temp  
26  
 
69-0733-3  
HEAT OFF COOL  
Move the system switch to OFF and the  
fan switch to ON. The fan should run  
continuously. When the fan switch is in  
the AUTO position, fan cycles with the  
heating or cooling system.  
ON  
AUTO  
FAN  
27  
69-0733—3  
STEP 11 SetThe Fan And System Switches  
ON  
AUTO  
First set the fan switch.  
FAN ON: The fan runs continuously. Use for  
improved air circulation during special occa-  
sions or for more efficient electronic air clean-  
ing. (In a heat-only system, fan runs continu-  
ously only if fan relay is connected to the  
thermostat.)  
FAN  
ON  
AUTO  
FAN AUTO: Normal setting for most homes.  
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.  
Exception: If fan operation switch on back of  
thermostat is set to the ELEC (right) position  
(see page 20), fan operates with furnace  
only.  
FAN  
28  
 
69-0733—3  
HEAT OFF COOL  
HEAT OFF COOL  
Then set the system switch.  
HEAT: The thermostat controls your heating  
system.  
OFF: Both the heating and air conditioning  
systems are off.  
HEAT OFF COOL  
COOL: The thermostat controls your air con-  
ditioning system.  
29  
69-0733—3  
Troubleshooting Guide  
IF…  
THEN…  
Display does not come on.  
Set the system switch to OFF. Remove batteries. Insert back-  
ward for at least five seconds to reset thermostat. Replace  
batteries correctly. Display should come on.  
Make sure batteries are fresh and installed correctly.  
Gently clean battery contacts using a soft pencil eraser. Do not  
use anything abrasive on the clips.  
Display flashes during  
programming.  
You have reached the temperature setting limit. The setting  
range is 45°F to 88°F (7°C to 31°C).  
Temperature change occurs Check the program times for the period in question. Be sure  
at the wrong times.  
that AM and PM indications are correct. Make sure the current  
day and time are correct. Reprogram if necessary.  
If you left the thermostat set for Adaptive Intelligent Recovery™,  
the start times will occur before your programmed comfort  
periods.  
30  
 
69-0733—3  
Heating does not come on.  
Check that switch on thermostat is set to HEAT.  
Check the system fuse or circuit breaker and replace or reset if  
necessary. If display is blank or displays REPL BAT, install  
fresh batteries.  
Check for correct wiring and good connections.  
Jumper wires R and W. If heat does not come on, contact your  
heating dealer.  
If temperature setting is higher than current temperature, and  
HEAT ON is displayed, contact Honeywell Customer Assis-  
tance at 1-800-468-1502.  
Cooling does not come on.  
Check that switch on thermostat is set to COOL.  
Check the system fuse or circuit breaker and replace or reset if  
necessary. If display is blank or displays REPL BAT, install  
fresh batteries.  
Check for correct wiring and good connections.  
31  
69-0733—3  
Jumper wires Rc and Y. If cooling does not come on, contact  
your cooling dealer.  
The thermostat has a built-in time delay on cooling. Allow up to  
ten minutes after changing the setting before the air conditioner  
starts.  
Make sure outdoor disconnect is energized (on).  
If temperature setting is lower than current temperature, and  
COOL is displayed, move system switch from COOL to OFF for  
ten minutes. After ten minutes, return the switch to the COOL  
position. If your air conditioner comes on, this indicates your  
compressor may have reached its high limit temperature  
protection and shut down. If your air conditioner does not  
come on after ten minutes and COOL is displayed, contact  
Honeywell Customer Assistance at 1-800-468-1502.  
If 2- or 4-wire installation, verify that R-Rc jumper is installed.  
The house is too warm or  
too cool.  
Press CURRENT SETTING to check the current temperature  
setting.  
If desired, change the temperature setting. See page 15.  
32  
 
69-0733—3  
HEAT ON is displayed, but  
no heat is coming from  
the registers.  
Allow time for the furnace to heat up and the fan to come on  
before checking for heat at the register. Note that on most gas  
and oil systems, the fan is not controlled by the thermostat, but  
by another control, which may account for the delay.  
The system cycle length  
is too short or too long.  
Readjust according to instructions on pages 18 and 19.  
The thermostat's current  
setting does not match the  
display temperature to  
within ± 1°.  
Check that the wiring hole in the wall behind the wallplate has  
been plugged with insulation to prevent drafts that might  
adversely affect thermostat operation.  
Be aware that it is normal for the current setting and display  
temperature to differ occasionally.  
Incorrect room temperature Make sure the hole behind the thermostat is plugged with  
showing on thermostat  
display.  
insulation to help prevent drafts from adversely affecting the  
thermostat operation.  
The thermosat is factory-calibrated and cannot be adjusted.  
33  
69-0733—3  
Index  
Adaptive Intelligent  
Set fan switch ....................... 28  
Set cooling temperatures ..... 14  
Set heating temperatures ..... 13  
Setting limits .................... 11,12  
Sunday  
program ......... 10,11,12,13,14  
System switch....................... 29  
Switch,fan ............................. 28  
Switch, system...................... 29  
Table of Contents ................... 1  
Temporary program  
Fan switch............................. 29  
Flashing display ...................... 6  
Heating  
temperatures ........ 9,11,12,13  
Hold temperature .................. 15  
MORNING ....................... 13,14  
NIGHT ......................... 13,14,15  
Operation .............................. 15  
Period keys ............................. 9  
Personal programming  
chart .............................. 11,12  
Preprogrammed  
schedule ............... 9,10,11,12  
Programming steps ......... 13,14  
Replacing batteries.............. 6,7  
Saturday  
Recovery™ ....................... 7,8  
Batteries, installation .............. 6  
Batteries, replacement ........ 6,7  
Blinking display ....................... 6  
Canceling programs ............. 15  
Change temperature............. 15  
Checking current setting....... 15  
Clock display ........................ 19  
Conventional Recovery ....... 7,8  
Cooling  
temperatures ........ 9,11,12,14  
Current setting ...................... 15  
Customer Assistance............ 35  
Day........................................ 13  
DAYTIME .................... 13,14,15  
Energy-saving  
changes ........................... 15  
Time ...................................... 13  
Time period .............. 9,10,11,12  
Troubleshooting ..... 30,31,32,33  
Warranty ............................... 36  
Weekday  
program ......... 10,11,12,13,14  
Set cooling temperatures ..... 14  
Set present day .................... 13  
Set present time ................... 13  
temperature ......................... 9  
EVENING.................... 13,14,15  
Fan operation switch ............ 20  
program ........... 9,10,11,13,14  
34  
 
69-0733—3  
Toll-free Customer Assistance  
NOTICE: This equipment is a Class B digital  
apparatus, which complies with Canadian  
RadioInterferenceRegulations,CRCc.1374.  
For all questions concerning this thermostat,  
please read and follow the instructions. If addi-  
tionalassistanceisneeded, callHoneywellCus-  
tomer Assistance toll-free at 1-800-468-1502,  
Monday-Friday, 7:00 a.m. - 5:30 p.m., Central  
time.  
Before you call, please have the following in-  
formation available—thermostat model num-  
ber and date code, type of heating/cooling sys-  
tem (e.g., hot water, warm air, oil, gas, etc.), and  
number of wires connected to the thermostat.  
35  
69-0733—3  
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 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.  
in Canada: Honeywell Limited/Honeywell Limitee  
Product Services ON30  
Return Goods Department  
1050 Berkshire Lane  
Plymouth, MN 55441-4437  
155 Gordon Baker Road  
North York, Ontario M2H 3N7  
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 Assistance Department, 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 Limitee,155 Gordon Baker Road, North York, Ontario M2H 3N7.  
36  
 
69-0733—3  

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