Honeywell T8131A Thermostat User Manual

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T8131A,B Programmable Thermostat  
OWNER’S GUIDE  
Weekday/Weekend (5-day/ 2-day)  
Programmable Heat and/or Cool  
Low Voltage (20 to 30 Vac)  
Thermostat and Mounting Plate  
6 9- 0 8 8 7 -1
Welcome to the world of comfort and energy  
savings with your new Honeywell program-  
mable thermostat.  
Direct any questions concerning the application  
of this thermostat to Honeywell Customer  
Assistance at 1-800-468-1502, Monday-Friday  
7:00 a.m.-5:30 p.m., Central time.  
By following the programing instructions in this  
manual, your new thermostat will automatically  
control the temperature in your home, keeping  
you comfortable while saving energy.  
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Table of Contents  
Page  
Prepare for Installation ....................................................................................................................  
Remove Old Thermostat .................................................................................................................  
Replacing a Clock Thermostat that has C or C1 Clock Terminals ..................................................  
Install Batteries................................................................................................................................  
5
7
8
9
Program the Thermostat ................................................................................................................. 11  
Adjust Fan Operation Switch........................................................................................................... 20  
Adjust System On-Time, °F/°C........................................................................................................ 20  
Mount Thermostat Mounting Plate .................................................................................................. 22  
Wire Thermostat Terminals ............................................................................................................. 24  
Mount Thermostat ........................................................................................................................... 28  
Check Thermostat Operation After Programming and Installing..................................................... 29  
Set Fan and System Switches ........................................................................................................ 31  
Troubleshooting Guide .................................................................................................................... 32  
Limited One-Year Warranty.................................................................................... Inside Back Cover  
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RECYCLING  
MERCURY  
SWITCH  
If this thermostat is replacing a thermo-  
stat that contains mercury in a sealed  
tube, do not place your old thermostat  
in the trash. See Fig. 1. Contact your  
local waste management authority for  
instructions regarding recycling and the  
proper disposal of your old thermostat.  
M3701  
Fig. 1. Typical location of a mercury switch  
in a thermostat.  
If you have questions, call Honeywell  
Inc. at 1-800-468-1502.  
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Prepare for Installation  
³
Check Table 1 to make sure this thermostat is compatible with your system. For more  
information, call Honeywell Customer Assistance, toll-free 1-800-468-1502.  
Table 1. Compatibility Chart.  
System Type  
Compatible With T8131  
Gas—Standing Pilot  
Gas—Electronic Ignition  
Gas-Fired Boilers  
Yes  
Yes  
Yes  
a,b  
Gas—Millivolt  
Oil-Fired Boilers  
No  
Yes  
a,b  
Oil-Fired Furnace  
Electric Furnace  
Electric Air Conditioning  
Baseboard Electric (120/240 Line Volt)  
Heat Pumps/Multistage Equipment  
Yes  
Yes  
Yes  
No  
No  
NOTE: Not compatible with any 120/240 volt circuit.  
a
Compatible with 2-wire Honeywell zone valves. Isolating relay required for 3-wire thermostats for zone valves.  
Not compatible with 2-wire White-Rodgers no. 1361 Valves.  
Compatible with hot water baseboard systems. Will not work efficiently on steam or gravity systems.  
b
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 Acquire tools and items (below) as needed. Also purchase two AA alkaline batteries; we  
recommend Energizer® batteries.  
CROSS-RECESSED  
SCREWDRIVER  
HAND OR POWER  
DRILL WITH 3/16 INCH  
DRILL BIT, IF NEEDED TO  
DRILL HOLES IN WALL  
MASKING TAPE, IF  
NEEDED TO LABEL WIRES  
AS DISCONNECTED FROM  
OLD THERMOSTAT  
WIRE CUTTER/STRIPPER OR SHARP  
KNIFE, IF NEEDED TO STRIP WIRES  
LEVEL, IF NEEDED TO LEVEL  
THERMOSTAT FOR APPEARANCE  
M878B  
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 Loosen screws holding thermostat to  
subbase, wallplate or wall, and lift away.  
 Disconnect wires from old thermostat or  
subbase. As you disconnect each wire,  
use masking tape to label it with the old  
terminal designation. If there are only two  
wires, they do not require labeling. If  
there is an extra wire that is not con-  
nected to your old thermostat, you also  
will not be connecting it to your new  
thermostat. Keep the wires from falling  
back into the wall by wrapping them  
around a pencil as shown.  
Remove Old Thermostat  
³
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 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 at the fuse/circuit breaker  
panel.  
 Carefully unpack your new thermostat  
and mounting plate; save the package of  
screws, the instructions and the receipt.  
 Remove the cover from the old thermo-  
stat. If it does not snap off when pulled  
firmly from the bottom, check for a screw  
used to lock on the cover.  
WIRES THROUGH  
WALL OPENING  
M5136  
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have a variation of a heat pump or multistage  
system. This thermostat is not compatible with  
such systems. If you would like information  
about which programmable thermostats will  
work with your system, call Honeywell Customer  
Assistance at 1-800-468-1502.  
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  
not allow them to touch, or you can damage  
your transformer. Disconnect the wires and wrap  
them separately, using electrical tape. Do not  
wrap them together. Place the wires where they  
do not interfere with the operation of the new  
thermostat. Record the colors and terminal  
designation 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 work without installing an  
isolating relay on these 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  
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Install Batteries  
IMPORTANT  
Batteries must be installed for pro-  
gramming and operating the thermo-  
stat and heating/cooling system.  
REMOVING  
BATTERY  
DOOR  
³
Use two AA alkaline batteries; non-  
alkaline batteries will not last as long,  
and can leak, causing damage to the  
thermostat or the wall surface. We  
recommend Energizer® batteries.  
M1719C  
 Make sure the thermostat is set to the  
OFF position.  
As the batteries are running low, a bAt Lo  
 Use a coin to remove the battery door.  
 Install the fresh batteries as shown,  
making sure positive and negative  
terminals are oriented correctly.  
 Replace the battery door.  
indicator flashes for one to two months before  
the batteries run out completely. Replace the  
batteries as soon as possible after the indicator  
starts flashing. If you do not replace the bat-  
teries sometime during the flashing bAt Lo, the  
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indicator eventually stops flashing. bAt Lo stays  
on without flashing to indicate the thermostat and  
heating/cooling system have stopped working  
and the batteries are almost completely dead.  
IMPORTANT  
Although the thermostat has a low  
battery indicator, replace the batteries  
once a year to prevent the thermostat  
and heating/cooling system from  
shutting down due to lack of battery  
power.  
After the batteries are completely dead, the bAt  
Lo indicator disappears, leaving a completely  
blank display.  
As a precaution, when  
leaving home for longer  
than a month, change the  
batteries before you leave  
to prevent the system  
Press down on the left ends of  
batteries to remove them. If you  
insert the new batteries within  
INSTALL TWO AA ALKALINE  
BATTERIES AS SHOWN  
2
0 to 30 seconds of removing  
the old ones, you do not need  
to reprogram the thermostat.  
However, if the display is blank,  
the batteries are dead or  
from shutting down due to  
lack of battery power.  
incorrectly installed and you  
need to reprogram. See  
pages 16 to 19 to reprogram.  
M1713  
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time periods are available. These periods can  
be seen individually on the display as you  
press the Set Schedule key.  
Program the Thermostat  
When batteries are installed, your thermostat  
can be programmed in your hand, before it is  
mounted on the wall.  
WAKE is the time period you want the house at  
a comfortable temperature when you get up  
and while you get ready for work or school.  
When deciding what time to set for your WAKE  
period, include extra lead time, depending on  
the outside temperature and your furnace  
response time, to give the furnace a head start  
to heat the house before you get up. (This will  
be a higher temperature during heating  
season, or a lower temperature during cooling  
season.)  
If you would prefer to program the thermostat  
after it is mounted on the wall, go to page 22,  
and return later to this programming section.  
Refer to the personal Program Schedule  
(
pages 14 and 15) to program your time and  
temperature settings for various times of the  
day.  
Four time periods are available during week-  
days—WAKE, LEAVE, RETURN, and SLEEP.  
During weekends, only the WAKE and SLEEP  
LEAVE is the time period you can set for an  
energy-saving temperature while you are away  
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at work or school. (This will be a lower tem-  
perature during heating season, or a higher  
temperature during cooling season.)  
sleeping. (Again, lower for heating or higher for  
cooling. For more comfortable sleeping, some  
homeowners choose not to raise the cool  
temperature during the night.)  
RETURN is the time period you want the  
house at a comfortable temperature for  
activities before bedtime. When deciding what  
time to set for your RETURN period, include  
extra lead time, depending on the outside  
temperature and your furnace response time,  
to give the furnace a head start to heat the  
house before you arrive home. (Again, higher  
for heating or lower for cooling.)  
You will set one schedule for weekdays and  
another for weekends, because your require-  
ments are probably different for each.  
Fill in the times and temperatures you desire  
for weekdays and weekends. If you decide not  
to program the thermostat, it automatically  
controls heating at 68°F (20°C), and cooling at  
78°F (26°C), 24 hours a day. Also, you do not  
SLEEP is the time period you can set for an  
energy-saving temperature while you are  
need to enter a time and temperature program  
for all periods if your schedule does not require  
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it. For example, a house that is occupied  
during weekdays would only require programs  
for WAKE and SLEEP.  
NOTE: Using sharp fingernails or pencil  
points can damage the keypad.  
If you make an error at any time during  
programming, press the Run Program key and  
continue again at the last step.  
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.  
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Program Schedule  
Weekdays  
HEATING PROGRAM SCHEDULE  
Start Time HeatingTemperature  
2
WAKE  
1
LEAVE  
RETURN  
SLEEP  
1
Weekends  
WAKE  
1
SLEEP  
1
2
WAKE and RETURN start times should include extra lead time, based on outside temperature  
and furnace response time, to give your furnace a head start to heat the house.  
The temperatures cannot be set any higher than 88°F (31°C) or any lower than 45°F (7°C).  
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COOLING PROGRAM SCHEDULE  
Start Time Cooling Temperature  
Weekdays  
2
WAKE  
1
LEAVE  
RETURN  
SLEEP  
1
Weekends  
WAKE  
1
SLEEP  
1
2
WAKE and RETURN start times should include extra lead time, based on outside temperature  
and furnace response time, to give your furnace a head start to heat the house.  
The temperatures cannot be set any higher than 88°F (31°C) or any lower than 45°F (7°C).  
NOTE: If you decide not to program the thermostat, it automatically controls heating at 68°F  
20°C), and cooling at 78°F (26°C), 24 hours a day.  
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This guide can be used for programming your new thermostat.  
NOTE: Batteries are required for operation and programming. When inserting batteries, set the  
system switch to OFF. Remove the battery door (on the thermostat left side) using a coin  
at the bottom. Follow the instructions on pages 9 and 10.  
Time  
Set Current Time/Day  
To set the time, press and release  
Ahead  
Set  
Clock/Day  
once,  
until current time shows; to set day, press  
Back  
Time  
Ahead  
Set  
Run  
and release  
again,  
until current day shows; then press  
.
Program  
Clock/Day  
Back  
Heating Program  
With system switch at HEAT, press and release  
the display.  
Set  
Schedule  
once. WAKE, MON-FRI and SET appear on  
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Time  
Temp  
Ahead  
Warmer  
Use  
to program WAKE time and  
to program WAKE temperature for Mon-Fri.  
Back  
Cooler  
Repeat sequence for LEAVE, RETURN, and SLEEP.  
Time  
Ahead  
Set  
Press Schedule until SAT, SUN, WAKE and SET appear on the display. Use  
to program  
Back  
Temp  
Warmer  
WAKE time and  
to program WAKE temperature for SAT-SUN. Repeat sequence for SLEEP.  
Cooler  
Cooling Program  
With system switch at COOL, follow the same instructions as for the Heating Program.  
Run  
Program  
After programming, adjust fan and system switches, as desired. Press and release  
the program.  
to start  
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A quick guide for operating or making changes follows:  
NOTE: Set system switch to Heat or Cool to perform the following:  
Temp  
Warmer  
Temporarily Change temperature for current period only—press  
; TEMPORARY  
Cooler  
indicator shows on display; this is cancelled at next scheduled change, or to cancel sooner,  
Run  
Program  
press  
.
Temp  
Warmer  
Hold  
Hold a temperature indefinitely (such as when you are on vacation)—press Temp  
,
;
Cooler  
Run  
HOLD appears on display; to cancel, press Program  
.
Run  
Check Current Temperature Setting—press Program . (When using TEMPORARILY CHANGE or  
HOLD, pressing this cancels your change.)  
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Set  
Run  
Check Programs—press  
Cancel a program—press  
repeatedly to see each time and temperature; then press  
.
Program  
Schedule  
Time  
Ahead  
Set  
Schedule  
until program to cancel shows; then press  
together.  
Back  
Permanently Change a program—Repeat steps in Heating Program or Cooling Program (page 16  
and 17), as applicable.  
Run  
Program  
Return to normal program or start program—press  
.
Questions?  
Call Honeywell  
Customer Assistance  
1
-800-468-1502.  
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setting screws A and B on the back of  
the thermostat. Use the heating system  
table shown in the illustration (page 21)  
as a guide.  
Adjust Fan Operation Switch  
³
The thermostat fan operation switch,  
labeled FUEL SWITCH (see illustration on  
page 21), is factory-set in the F position.  
This is the correct setting for most  
Optimize the system on-time according to the  
type of system to minimize room temperature  
swings. Setting the screw out one turn means  
turning the screw approximately 360° counter-  
clockwise, or about one complete turn.  
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 or cooling in a system where  
the G terminal is connected.  
In the unlikely event that you want a longer  
furnace on-time, readjust screws A and/or B as  
follows:  
Adjust System On-Time, °F/°C  
³
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, adjust the on-time accordingly by  
First, turn in both screws completely, then  
adjust for system type:  
Warm Air Furnace—set at the Hot Water  
setting (A—out one turn, B—leave in).  
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THERMOSTAT BACK  
Electric Furnace—leave at the  
Warm Air Furnace setting (A—  
leave in, B—out one turn).  
A
B
ADJUST SCREWS THROUGH HOLES  
TO SELECT OPERATION DESIRED  
FUEL SWITCH  
POSITION  
HEATING SYSTEM  
NOTE: This thermostat does not  
have a setting for steam/  
gravity air. Cycles would  
not be long enough for  
accurate temperature  
control.  
WARM AIR  
FURNACE  
HOT WATER A–OUT B–IN  
BOILER  
ELECTRIC  
FURNACE  
A–IN  
B–IN  
F
F
E
1 TURN  
A–IN  
B–OUT  
1 TURN  
W
Y
G
FOR HIGH EFFICIENCY FURNACE (90%+ AFUE)  
ADJUST: SCREW A–OUT ONE TURN  
SCREW B–IN  
FUEL SWITCH – F POSITION  
FUEL SWITCH  
IMPORTANT  
F
E
When using a high  
efficiency furnace such as  
a 90% or greater AFUE  
R
C
(Average Fuel Utilization  
M9199  
Efficiency) unit, adjust  
screw A out one turn and  
leave screw B in.  
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WALL ANCHORS (2)  
WIRES THROUGH  
Mount Thermostat Mounting Plate  
WALL OPENING  
³
Position mounting plate on the wall. Use  
a level to make sure mounting plate is  
level. Use a pencil to mark the two  
mounting holes.  
WALL  
 Remove mounting plate from the wall,  
and drill 3/16 in. holes in the wall (if  
drywall) as marked. For firmer material  
such as plaster or wood, drill 7/32 in.  
holes. Gently tap the anchors (provided)  
into the drilled holes until flush with the  
wall.  
MOUNTING  
PLATE  
MOUNTING  
SCREWS (2)  
M1718  
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LEVEL  
 Reposition the mounting plate over the  
holes, pulling the wires through the  
wiring opening. Loosely insert the two  
mounting screws into the holes.  
 Level for appearance only; thermostat  
functions properly even when not level.  
Tighten the mounting screws.  
M1714A  
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If the wires are still too short, use the wire  
connectors (purchased locally) to extend the  
wires. See figure for guidelines on using wire  
extenders.  
Wire Thermostat Terminals  
NOTE: All wiring must comply with local  
codes and ordinances. If unsure  
about household wiring procedures,  
call your local heating/air conditioning  
contractor.  
WIRE NUT SIZE FOR  
METHOD TO INCREASE WIRE LENGTH  
TWO 18-GAUGE WIRES  
Refer to the masking tape labels you placed on  
the wires when you removed your old thermostat.  
WIRE  
FROM  
WALL  
6 IN. (152 MM)  
OF 18-GAUGE  
THERMOSTAT  
WIRE. MATCH  
INSULATION  
COLORS  
³
Match the letter of your old thermostat  
wire with the terminal of the correspond-  
ing letter on the back of your new  
thermostat. Refer to the illustrations on  
pages 26 through 27. Hold the thermo-  
stat as shown to minimize the need for  
wire extenders.  
OR MARK  
WIRE ENDS.  
M1715A  
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 Loosen the terminal screws and slip  
each wire beneath its matching terminal.  
See illustration (below) for proper wiring  
technique. Securely tighten the terminals.  
 Plug the hole in the wall with insulation to  
help prevent drafts from adversely  
affecting thermostat operation.  
PROPER WIRING TECHNIQUE  
INSERT  
STRAIGHT  
UNDER  
SCREW HEAD  
5
(
/16 IN.  
8 MM)  
STRIP  
M3002A  
END OF WIRE  
VISIBLE HERE  
M3825  
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3-WIRE HEAT-ONLY  
4-WIRE COOL-ONLY  
A
A
B
B
W
Y
G
W
Y
G
C
R
C
R
COOLING  
CONTACTOR  
COIL  
1
HEATING  
RELAY OR  
VALVE COIL  
L1  
HOT)  
(
1
L2  
FAN  
RELAY  
L1  
(HOT)  
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS  
AND OVERLOAD PROTECTION AS REQUIRED.  
L2  
M9213  
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND  
OVERLOAD PROTECTION AS REQUIRED.  
M9212  
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5-WIRE HEAT/COOL  
A
B
W
Y
G
C
R
HEATING  
RELAY OR  
VALVE COIL  
FAN  
RELAY  
COOLING  
CONTACTOR  
COIL  
1
L1  
HOT)  
(
L2  
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND  
OVERLOAD PROTECTION AS REQUIRED.  
M9214  
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Mount Thermostat  
A. ENGAGE TABS AT TOP OF  
B. PRESS LOWER EDGE  
NOTE: To remove the  
thermostat  
from the  
THERMOSTAT AND MOUNTING PLATE.  
OF CASE TO LATCH.  
wall, first pull  
out at the  
bottom of  
thermostat,  
then remove  
the top.  
C. SWING COVER OPEN TO  
M879  
CHECK OPERATION.  
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Press key until the setting is about  
0°F (6°C) above room tempera-  
ture. Heating should start and the  
fan should run after a short delay  
Check Thermostat Operation After  
Programming and Installing  
Warmer  
Cooler  
1
(
immediately if fan operation switch  
Heating  
is set in E position).  
Do not check heating system operation such  
as the gas valve, zone valve or oil burner  
control by jumpering thermostat terminals at  
the primary control. This damages the thermo-  
stat. Instead, jumper R and W wires at the  
thermostat.  
Press key until setting is about 10°F  
(
6°C) below room temperature. The  
heating equipment should shut off.  
Cooling  
Cool  
Off  
Heat  
To avoid possible compressor damage, do not  
operate the cooling system when the outside  
temperature is below 50°F (10°C). See  
compressor manufacturer instructions for  
further information.  
Move the system switch to  
HEAT and the fan switch to  
AUTO.  
Auto  
On  
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NOTE: When cooling setting is changed,  
thermostat can delay up to five  
minutes before turning on the air  
conditioner. This delay protects the  
compressor.  
Press the key until the setting is  
about 10°F (6°C) below room  
temperature. The cooling equipment  
and fan should start.  
Cooler  
Press the key until the setting is  
about 10°F (6°C) above room  
temperature. The cooling equipment  
and fan should stop.  
Warmer  
Cool  
Off  
Heat  
On  
Move the system switch to  
COOL and the fan switch to  
AUTO.  
Auto  
Cool  
Off  
Heat  
On  
Move the system switch to  
OFF, keeping the fan switch at  
AUTO. The system and fan  
should be off.  
Auto  
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more efficient electronic air cleaning. (In a  
heat-only system, the fan runs continuously  
only when the fan relay is connected to the  
thermostat.)  
Set Fan and System Switches  
First set the fan switch.  
Auto  
On  
AUTO: Normal setting for most  
homes. A single-speed fan turns  
on automatically with the air  
Then set the system switch.  
COOL: The thermostat  
controls your air condition-  
ing system.  
Cool  
Cool  
Cool  
Off  
Off  
Off  
Heat  
Heat  
Heat  
conditioner or furnace. A two-speed fan  
usually runs on high with the air conditioner  
and on low with the furnace.  
OFF: Both the heating and air  
conditioning systems are  
off.  
Exception: If Fan Operation Switch on the back  
of the thermostat is set to the E position (see  
page 21), the fan operates with furnace only.  
HEAT:The thermostat controls  
your heating system.  
ON: The fan runs continuously. Use  
for improved air circulation  
Auto  
On  
during special occasions or for  
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Troubleshooting Guide  
IF…  
THEN…  
Display will not come on.  
 Check that the green light emitting diode (LED)  
located to the left of the LCD is lit, indicating the  
thermostat is powered properly.  
Temperature display will not go lower  
 You have reached the temperature setting limit.  
The setting range is 45°F to 88°F (7°C to 31°C).  
than 45°F (7°C) or higher than 88°F  
(31°C) during programming.  
Temperature change occurs at the  
wrong times.  
 Check the program times for the period in  
question. Be sure that AM and PM indications are  
correct. Make sure the current day and time are  
correct. Reprogram if necessary.  
Heating will not come on.  
 Check that the green LED is lit.  
Check that the switch on the thermostat is set to  
HEAT.  
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Heating will not come on (Cont).  
Cooling will not come on.  
 Check the system fuse or circuit breaker and  
replace or reset, if necessary.  
Check for correct wiring and good connections.  
If temperature setting is higher than current  
temperature and displays HEAT, contact Honeywell  
Customer Assistance at 1-800-468-1502.  
 Check that the green LED is lit.  
Check that the switch on the thermostat is set to  
COOL.  
Check the system fuse or circuit breaker and  
replace or reset, if necessary.  
Check for correct wiring and good connections.  
The thermostat has a built-in time delay on cooling.  
Allow five to ten minutes after changing the setting  
before the air conditioner starts.  
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69-0887—1  
Cooling will not come on (Cont).  
 If temperature setting is lower than current  
temperature, and displays COOL, move system  
switch from COOL to OFF for ten minutes. After  
ten minutes, return switch to COOL position. If the  
air conditioner comes on, compressor could have  
reached its high limit temperature protection and  
shut down. If the air conditioner does not come on  
after ten minutes and displays COOL, contact  
Honeywell Customer Assistance at 1-800-468-1502.  
The house is too warm or too cool.  
 Press Present Setting key to check the current  
temperature setting.  
If desired, change the temperature setting. See  
page 18.  
SYSTEM ON indicator is lit, 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.  
(Check to make sure system on-time is set  
correctly according to pages 20 and 21.)  
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The furnace or air conditioner  
on-time is too short or too long.  
 Contact your heating or air conditioner contractor.  
If further assistance is needed, call Honeywell  
Customer Assistance at 1-800-468-1502.  
The thermostat’s current setting  
does not match the display  
temperature.  
 Check that the wiring hole in the wall behind the  
wallplate was plugged with insulation to prevent  
drafts that could adversely affect thermostat  
operation.  
Be aware that it is normal for the current setting  
and display temperature to differ occasionally.  
bAt Lo remains on display after  
fresh batteries are installed.  
 Remove batteries. Wait one hour. Install fresh  
alkaline batteries.  
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Toll-free Customer Assistance  
For all questions concerning this thermostat, please read and follow the instructions. If additional  
assistance is needed, call Honeywell Customer 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 information available—thermostat model number and  
date code, type of heating/cooling system (for example, hot water, warm air, oil, or gas), and  
number of wires connected to the thermostat.  
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href="
TYPICAL ENERGY SAVINGS FOR REPRESENTATIVE CITIES IN THE U.S. AND CANADA  
Savings for Once-A-Day  
0°F (5°C) decrease  
Savings for Twice-A-Day  
10°F (5°C) decrease*  
Savings for 5°F (3°)  
summer increase  
1
30%  
28%  
26%  
24%  
22%  
2
0%  
8%  
1
1
6%  
4%  
1
1
2%  
0%  
1
8
%
%
%
6
4
2
% Minneapolis  
St. Paul  
Montreal  
Ottawa  
Toronto  
Edmonton  
Regina  
Winnipeg  
Calgary  
Halifax  
Vancouver  
Buffalo  
Cleveland  
Milwaukee  
Denver  
Des Moines Chicago  
Omaha  
Salt Lake  
City  
Boston  
Cincinnati  
Kansas City Philadelphia Portland  
Wash., D C  
New York  
Louisville  
San  
Francisco  
Dallas  
Atlanta  
Los Angeles  
San Diego  
Moncton  
North Bay  
Quebec  
Detroit  
Pittsburgh  
Indianapolis  
St. Louis  
Seattle  
Columbus  
St. John's  
*Based on 10°F (5°C) decrease—(5°F (3°C) decrease  
gives approximately 55 percent of these savings).  
M2416A  
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69-0887—1  
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.  
Return Goods Department  
in Canada: Honeywell Limited/Honeywell Limitée  
Product Services ON15-FFE  
1050 Berkshire Lane  
155 Gordon Baker Road  
Plymouth, MN 55441-4437  
NorthYork Ontario M2H 2C9  
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 Center, Honeywell Inc., P.O. Box 524, Minneapolis, MN  
55440-0524 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, 155 Gordon Baker Road, NorthYork, Ontario M2H 2C9.  
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href="
NOTICE: This equipment is a Class B digital apparatus, which complies with Canadian Radio  
Interference Regulations, CRC c.1374.  
Home and Building Control  
Home and Building Control  
Honeywell Limited-Honeywell Limitée  
155 Gordon Baker Road  
North York, Ontario  
Helping You Control Your World  
Honeywell Inc.  
1
985 Douglas Drive North  
Golden Valley, MN 55422  
M2H 2C9  
69-0887—1 Rev. 5-96 J.S. Printed in Mexico  
Copyright © 1996 Honeywell Inc. All Rights Reserved  

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