Honeywell 3355 Thermostat User Manual

Welcome to the world of comfort and energy

savings with your new Honeywell MagicStat®

Programmable Thermostat.

RECYCLING THERMOSTAT

If this thermostat is replacing a thermo-

stat that contains mercury in a sealed

tube, see Fig. 1, do not place your old

thermostat in the trash. Contact your

local waste management authority for

instructions regarding recycling and the

proper disposal of your old thermostat.

Your new thermostat will automatically control

the temperature in your home, keeping you

comfortable while saving energy when pro-

grammed according to the instructions in

this manual.

Direct any questions concerning the application

of this thermostat to Honeywell Customer

Assistance at 1-800-468-1502, Monday-Friday

If you have questions, call Honeywell Inc.

at 1-800-468-1502.

7:00 a.m.-5:30 p.m., Central time.

MERCURY�

SWITCH

Fig. 1. Typical

location of a

mercury switch in a

thermostat.

M3701

69-1012

Table of Contents

Step 1: Prepare For Installation ..................................................................................................... 4

Step 2: Remove Old Thermostat ................................................................................................... 6

Step 3: Install Batteries .................................................................................................................. 8

Step 4: Program Thermostat........................................................................................................ 10

Personal Programming Chart ...................................................................................................... 12

Step 5: Adjust Fan Operation Switch, as Required ................................................................... 18

Step 6: Adjust System On-Time, °F/C°, as Required ................................................................. 18

Step 7: Mount Thermostat Mounting Plate ................................................................................. 21

Step 8: Wire Thermostat Terminals ............................................................................................. 23

Step 9: Mount Thermostat............................................................................................................ 27

Step 10: Check Thermostat Operation After Programming and Installing .............................. 28

Step 11: Set Fan and System Switches ..................................................................................... 30

Troubleshooting Guide................................................................................................................. 32

Limited One-Year Warranty ................................................................................. Inside Back Cover

69-1012

Step 1: Prepare for Installation

■

Check Table 1 to make sure this thermostat is compatible with your system. If not, return to the

retailer. For more information, call Honeywell Customer Assistance, toll-free 1-800-468-1502.

Table 1. Compatibility Chart.

System Type

Compatible With CT3355

Gas—Standing Pilot

Gas—Electronic Ignition

Gas-Fired Boilers

Yes

a, b

Gas—Millivolt

Oil-Fired Boilers

Yes

a, b

Oil-Fired Furnace

Electric Furnace

Electric Air Conditioning

Baseboard Electric (120/240 Line Volt)

Heat Pumps/Multistage Equipment

Yes

Not compatible with any 120/240 volt circuit.

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.

69-1012

■

Acquire tools and items below as needed. Also purchase two AA alkaline batteries; we recom-

mend 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 �

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�

THERMOSTAT FOR APPEARANCE

M878B

69-1012

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 damage, do not operate the

cooling system when outdoor temperature is

below 50°F (10°C).

■ Disconnect wires from the 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 need to be labeled. If there is an extra

wire that is not connected to your old

thermostat, you will also not be connecting it

to your new thermostat. Wrap wires as shown

to keep them from falling back into the wall.

■

TURN OFF POWER to system at the

furnace, or at the fuse/circuit breaker panel.

Carefully unpack your new thermostat and

mounting plate; save package of screws,

instructions and receipt.

WIRES THROUGH�

WALL OPENING

■

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

subbase, wallplate or wall, and lift away.

M5136

69-1012

Replacing a Clock Thermostat

that has C or C1 Clock Terminals?

If you are replacing a Honeywell Chronotherm®

Thermostat, you can 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 may 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.

such systems so return the product to the

place of purchase. If you would like information

about which programmable thermostats work

with your system, call Honeywell Customer

Assistance at 1-800-468-1502.

Three thermostat wires?

If you have three wires for heating only and

can operate the fan using the fan ON switch,

this thermostat works with your system.

However, some hot water (zoned) heating

systems have three thermostat wires. The

thermostat does 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 probably have

a variation of a heat pump or multistage

system. The thermostat is not compatible with

69-1012

Step 3: Install Batteries

IMPORTANT

Batteries must be installed for

programming and operation of the

thermostat and heating/cooling

system.

■

Purchase two AA alkaline batteries; non-

alkaline batteries do not last as long, and

can leak, causing damage to the thermostat

or the wall surface. We recommend

Energizer® batteries.

Make sure the thermostat is set to the OFF

position.

REMOVING �

BATTERY�

DOOR

M1719C

As the batteries are running low, a bAt Lo

indicator flashes for one or two months before

batteries run out completely. Replace the

batteries as soon as possible after the indicator

starts flashing. If you do not replace the

■

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.

batteries sometime while bAt Lo is flashing, the

69-1012

indicator eventually stops flashing. bAt Lo

stays on without flashing, indicating the

thermostat and heating/cooling system

have stopped working when the batteries

are almost completely dead.

Press down on the left ends of the batteries to

remove. If you insert the new batteries within

20 to 30 seconds of removing the old ones,

you do not have to reprogram the thermostat.

However, if the display is blank, the batteries

are dead or incorrectly installed and you must

reprogram. See pages 14 and 15 to reprogram.

After the batteries are completely dead, the

bAt Lo indicator disappears, leaving a com-

pletely blank display.

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.

INSTALL TWO AA ALKALINE �

BATTERIES AS SHOWN

As a precaution, when leaving home for longer

than a month, change batteries before you

leave to prevent the system from shutting down

due to lack of battery power.

M1713

69-1012

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.)

Step 4: Program Thermostat

After the batteries are installed, the thermostat

can be easily programmed in your hand, before

it is installed on the wall.

If you prefer to program the thermostat after it

is installed on the wall, skip to page 18, and

return later to this programming section.

LEAVE is the time period you can set for an

energy-saving temperature while you are away

at work or school. (This will be a lower tem-

perature during heating season, or a higher

temperature during cooling season.)

The following Personal Programming Chart

(

pages 12 and 13) can be helpful for planning

your program schedule of time and tempera-

ture settings for various times of the day.

Four time periods are available during week-

days — WAKE, LEAVE, RETURN, and SLEEP.

These periods can be seen individually on the

display as you press the SET SCHEDULE key.

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,

WAKE is the time period you want the house at

a comfortable temperature when you get up and

69-1012

to give the furnace a head start to heat the

house before you arrive home. (Again, this is

higher heating or lower for cooling.)

need to enter a time and temperature program

for all periods if your schedule does not require

it. For example, a house that is occupied

during weekdays would only require programs

for WAKE and SLEEP.

SLEEP is the time period you can set for an

energy-saving temperature while you are

sleeping. (Again, this is lower for heating or

higher for cooling. For more comfortable

sleeping, some people choose not to raise the

cool temperature during the night.)

If no program is entered for the weekends, the

thermostat will operate on the weekday SLEEP

program all weekend.

Before programming, remove the clear plastic

overlay covering the display.

You will set one schedule for weekdays and

another for weekends, because your require-

ments will probably be different for each. Also,

during weekends, only the WAKE and SLEEP

time periods are available.

When pressing the keys, use the ball of your

finger or a soft pencil eraser. Using sharp

fingernails or pencil points can damage the

keypad.

Fill in the times and temperatures you desire

for weekdays and weekends. If you decide not

to program the thermostat, it will automatically

control heating at 68°F (20°C), and cooling at

If you make an error at any time during

programming, just press the RUN PROGRAM

key, and continue again at the step where you

left off.

78°F (26°C), 24 hours a day. Also, you do not

69-1012

Personal Programming Chart

Heating Program

Weekdays

Start Time

Heating Temperature

WAKE

LEAVE

RETURN

SLEEP

Weekends

WAKE

SLEEP

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).

69-1012

Cooling Program

Weekdays

Start Time

Heating Temperature

WAKE

LEAVE

RETURN

SLEEP

Weekends

WAKE

SLEEP

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.

(

69-1012

This guide can be used for programming your new thermostat.

NOTE: Batteries are required for operation and programming. When inserting batteries, set

system switch to OFF. Remove the battery door (on the thermostat left side) using a coin

at the bottom. Follow instructions on pages 8 and 9.

Time

Set Current Time/Day

Ahead

Back

Set�

To set the time, press and release Clock/Day once, then press

until current time shows; to set

the day,

Time

Ahead

Set�

Clock/Day

Run�

press and release

again, then press

until current day shows; then press

Program

Back

Heating Program

Weekday

With system switch at HEAT, press and release Schedule once. WAKE, Mon-Fri and SET appear on

the display.

69-1012

Time

Temp

Ahead

Warmer

Press

to program WAKE time and press

to program WAKE temperature for

Time

Back

Cooler

Mon-Fri. Repeat sequence for LEAVE, RETURN, and SLEEP.

Ahead

Weekend

Schedule

Press

until SAT SUN, WAKE and SET appear on the display. Press

Temp

to program

Back

Warmer

WAKE time and

for SLEEP.

to program WAKE temperature for Sat-Sun. Repeat sequence

Cooler

Cooling Program

With system switch at COOL, follow the same instructions as for the Heating Program.

Run�

Program

After programming, adjust the fan and system switches, as desired. Press and release

start the program.

69-1012

A quick guide for operating or making changes follows:

NOTE: System switch must be set to Heat or Cool to perform the following.

Temp

Warmer

Temporarily Change temperature for current period only— press

;

TEMPORARY indicator

Cooler

Run�

shows on display; canceling itself at the next scheduled change, or to cancel sooner press Program

Temp

Warmer

Hold�

;

Hold a temperature indefinitely (such as when on vacation)— press

, then press

Temp

Run�

Cooler

HOLD appears on the display; to cancel, press Program

Present

Setting

Check Current Temperature Setting— press

. (When using TEMPORARILY CHANGE or

HOLD, pressing this cancels your change.)

69-1012

Weekday

Weekend

Check Programs— press Schedule

Schedule repeatedly to view each time and temperature; then

Run�

press Program

Weekday

Weekend

Schedule until program to cancel shows; then press

Clear

Cancel a program— press Schedule

Usage

Check Usage — Press

for length of time heat or air conditioning has been running today

since midnight; press again for yesterday’s usage, press again for cumulative;

Run�

Clear

press

to clear cumulative reading, if desired; then press Program .

Permanently Change a program—Repeat steps in Heating Program section or Cooling Program

section (pages 14 through 16), as applicable.

Run�

Return to normal program or start program — press Program

Questions?

Call Honeywell

Customer Assistance

1-800-468-1502.

69-1012

Step 5: Adjust Fan Operation Switch, as Required

■

The thermostat fan operation switch,

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.

labeled FUEL SWITCH (see illustration on

page 20) is factory-set in the F position. This

is the correct setting for most systems. If

Step 6: Adjust System On-Time,

°F/C

°, as Required

■

The system 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 setting screws A

and B on the back of the thermostat. Use the

heating system table shown in the illustration

minimize room temperature swings. Setting

the screw out one turn means turning the

screw approximately 360° counterclockwise,

or about one complete turn.

In the unlikely event that you want a longer

system on-time, readjust screws A and/or B

as follows:

(

page 20) as a guide. Optimize the system

on-time according to the type of system to

69-1012

First, turn in both screws completely, then

adjust for system type:

IMPORTANT

When using a high efficiency furnace

•

Warm Air Furnace—Set at the Hot Water

setting (A—out one turn, B—leave in).

Electric Furnace—Leave at the Warm Air

Furnace setting (A—leave in, B—leave in).

such as a 90% or greater AFUE

(Average Fuel Utilization Efficiency)

unit, adjust screw A out one turn and

leave screw B in.

•

NOTE: This thermostat does not have a

setting for steam/gravity air. Cycles

would not be long enough for accu-

rate temperature control.

■ The thermostat is set to read the tempera-

ture in degrees Fahrenheit. If readings are

desired in degrees Celsius, adjust screw C

out one turn, as shown in illustration.

69-1012

THERMOSTAT BACK

DISPLAY

F� C–IN�

C–OUT�

TURN

ADJUST SCREWS THROUGH HOLES�

TO SELECT OPERATION DESIRED

FUEL SWITCH�

POSITION�

HEATING SYSTEM

WARM AIR� A–IN�

FURNACE�

B–IN�

�

F�

�

HOT WATER� A–OUT� B–IN�

F�

�

BOILER�

1 TURN�

�

ELECTRIC � A–IN

FURNACE

B–OUT�

1 TURN�

E�

�

FOR HIGH EFFICIENCY FURNACE (90%+ AFUE)�

ADJUST: SCREW A–OUT ONE TURN�

SCREW B–IN�

FUEL SWITCH – F POSITION

FUEL SWITCH

M8796

69-1012

Step 7: Mount Thermostat Mounting Plate

■

Position the mounting plate on the wall. Use

a level to make sure the mounting plate is

level. Use a pencil to mark the two

mounting holes.

Remove the mounting plate from the wall,

and drill 3/16-inch holes in the 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.

Reposition mounting plate over the holes,

pulling wires through the wiring opening.

Loosely insert two mounting screws into

the holes.

WALL ANCHORS (2)

WIRES THROUGH�

WALL OPENING

■

WALL

■

MOUNTING�

PLATE

MOUNTING�

SCREWS (2)

M1718

69-1012

■

Level for appearance only; thermostat

functions properly even when not level.

Tighten the mounting screws.

LEVEL

M1714A

69-1012

Step 8: 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.

■ In 5-wire installations only, be sure to

remove the factory-installed jumper

connecting terminals R and Rc.

WIRE NUT SIZE FOR �

METHOD TO INCREASE WIRE LENGTH

TWO 18-GAUGE WIRES

Refer to masking tape labels you placed on the

wires when you removed your old thermostat.

■

Match the letter of your old thermostat wire

with the terminal of the corresponding letter

on the back of your new thermostat. Refer

to illustrations on pages 25 and 26. Hold the

thermostat as shown to minimize need for

wire extenders. If wires are still too short,

use wire connectors (purchased locally) to

extend wires. See illustration for guidelines

on using wire extenders.

WIRE �

FROM�

WALL

6 IN. (152 MM) �

OF 18-GAUGE �

THERMOSTAT �

WIRE. MATCH�

INSULATION �

COLORS �

OR MARK �

WIRE ENDS.

M1715A

69-1012

■

Loosen the terminal screws and slip each

wire beneath its matching terminal. See

illustration (lower right) for wire insertion

technique. Securely tighten the terminals.

Plug the hole in the wall with insulation to

help prevent drafts from adversely affecting

the thermostat operation.

JUMPER (FACTORY-�

INSERT�

STRAIGHT �

UNDER �

INSTALLED) REMOVE �

IF 5-WIRE SYSTEM

/16 in. �

(8 mm)�

SCREW HEAD

c R

STRIP

END OF WIRE �

VISIBLE HERE

M3002A

M1712A

69-1012

2-WIRE HEAT-ONLY (JUMPER INTACT)

4-WIRE HEAT/COOL (JUMPER INTACT)

JUMPER

HEATING�

RELAY OR�

VALVE COIL

HEATING�

RELAY OR�

VALVE COIL

COOLING�

CONTACTOR�

COIL

L1�

(

HOT)

FAN�

RELAY

L1�

HOT)

(

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND�

OVERLOAD PROTECTION AS REQUIRED.

M8793

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND�

OVERLOAD PROTECTION AS REQUIRED.

M8794

69-1012

5-WIRE HEAT/COOL (JUMPER REMOVED)

3-WIRE COOL-ONLY (JUMPER INTACT)

JUMPER

HEATING�

RELAY OR�

VALVE COIL

COOLING�

CONTACTOR�

COIL

FAN�

RELAY

COOLING�

CONTACTOR�

COIL

FAN�

RELAY

L1�

(HOT)

L1�

(HOT)

(

HOT)

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND�

OVERLOAD PROTECTION AS REQUIRED.

M8792

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND�

OVERLOAD PROTECTION AS REQUIRED.

M8795

69-1012

Step 9: Mount Thermostat

NOTE: To remove the thermostat from the

wall, first pull out at the bottom of the

thermostat, then remove the top.

A. ENGAGE TABS AT TOP OF �

B. PRESS LOWER EDGE �

C. SWING OPEN COVER �

TO CHECK �

OPERATION.

THERMOSTAT AND MOUNTING PLATE.

OF CASE TO LATCH.

M1734A

69-1012

Step 10: Check Thermostat Operation after Programming and Installing

Heating

Cool

Off

Heat

Do not check heating system

Move the system switch to HEAT

and the fan switch to AUTO.

operation by jumpering thermostat

terminals at the primary control

such as the gas valve, zone valve,

or oil burner control. This damages

the thermostat, instead, jumper R

and W wires at the thermostat.

Auto

Press key until the setting is about

Warmer

10°F (6°C) above room tempera-

ture. Heating should start and the

fan should run after a short delay

(

immediately if fan operation switch

is set in E position).

Press key until setting is about 10°F

Cooler

(6°C) below room temperature. The

heating equipment should shut off.

69-1012

Cooling

Cool

Off

Heat

To avoid possible compressor

damage, do not operate the cooling

system when outside temperature

is below 50°F (10°C). See compres-

sor manufacturer instructions for

further information.

Move the system switch to COOL

and the fan switch to AUTO.

Auto

Press key until setting is about

Warmer

Cooler

0°F (6°C) below room tempera-

NOTE: When cooling setting is

changed, thermostat may

delay up to five minutes

before turning on the air

conditioner. This delay

ture. The cooling equipment and

fan should start.

Press key until the setting is about

10°F (6°C) above room tempera-

ture. The cooling equipment and

fan should stop.

protects the compressor.

Cool

Off

Heat

Move the system switch to OFF,

with the fan switch at AUTO. The

system and fan should be off.

Auto

69-1012

Step 11: Set Fan and System Switches

First set the fan switch.

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 the fan operation switch on the

back of the thermostat is set to the

E position (see page 20), the fan

operates only with the furnace.

Auto

FAN ON: The fan runs continuously. Use for

improved air circulation during special occa-

sions or for more efficient electronic air

cleaning. (In a heat-only system, fan runs

continuously only if the fan relay is connected

to the thermostat.)

69-1012

Then set the system switch.

Cool

Off

Heat

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.

69-1012

I^Tf…^r^o^u^b^l^e^s^h^o^o^tⁱⁿ^g^G^uⁱ^d^e

Display will not come on.

Then…

■ Set the system switch to OFF. Remove batteries. Insert

backward 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.

Temperature display will not go

lower than 45°F (7°C) or higher than

■ You have reached the temperature setting limit. The

setting range is 45°F to 88°F (7°C to 31°C).

8°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 switch on the thermostat is set to HEAT.

■

Check the system fuse or circuit breaker and replace or

reset if necessary.

Check for correct wiring and good connections.

■

69-1012

Heating will not come on.

Continued)

■ Jumper wires R and W. If heat does not come on, contact

(

your heating dealer.

■

If display is blank or shows bAt Lo, install fresh batteries.

If temperature setting is higher than current temperature,

and the display shows HEAT, contact Honeywell

Customer Assistance at 1-800-468-1502.

Cooling will not come on.

■ 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.

Jumper wires Rc and Y. If cooling does not come on,

contact your cooling dealer.

■

If display is blank or shows bAt Lo, install fresh batteries.

The thermostat has a built-in time delay on cooling. Allow

five to ten minutes after changing the setting before the

air conditioner starts.

■

Make sure the outdoor disconnect is energized (on).

69-1012

Cooling will not come on.

Continued)

■ If temperature setting is lower than the current

temperature, and the display shows COOL, move the

system switch from COOL to OFF for ten minutes. After

ten minutes, return the switch to the COOL position. If the

air conditioner comes on, compressor may have reached

its high limit temperature protection and shut down. If the

air conditioner does not come on after the ten minutes and

the display shows COOL, contact Honeywell Customer

Assistance at 1-800-468-1502.

(

■

If 2- or 4-wire installation, verify R-Rc jumper is installed.

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 16.

■

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

page 18 and 19.)

69-1012

The furnace cycles too frequently or ■ Readjust system on-time according to instructions on

the system cycle length is too short

or too long.

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

was plugged with insulation to prevent drafts that might

adversely affect the thermostat operation.

■

Be aware that it is normal for the current setting and

display temperature to differ on occasion.

During recovery from setback or setup, setting and

display temperatures may differ for up to 30 minutes after

recovery period.

■

Incorrect room temperature showing ■ Make sure the hole behind the thermostat is plugged with

on thermostat display.

insulation to help prevent drafts from adversely affecting

the thermostat operation.

■

The thermostat is factory-calibrated, and cannot be

adjusted.

bAt Lo remains on display after

fresh batteries are installed.

■ Remove the batteries. Wait one hour. Install fresh alkaline

batteries.

69-1012

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�

�

30%

28%

26%

24%

22%

^%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�

Columbus

Seattle

St. John's

*Based on 10°F (5°C) decrease—(5°F [3°C] decrease�

gives approximately 55 percent of these savings).

M2416A

69-1012

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 ON30

050 Berkshire Lane

155 Gordon Baker Road

North York, Ontario M2H 2C9

Plymouth, MN 55441-4437

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, North York, Ontario M2H 2C9

69-1012