Honeywell Electronic Programmable Thermostat Thermostat User Manual

Electronic

Programmable Thermostat

Owner’s Manual

J.S. • Rev. 5-96

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Table of Contents

Programming Your Thermostat .................................................................................................. 3

Program Schedule...................................................................................................................... 5

Set Current Time/Day ................................................................................................................ 6

Heating Program ........................................................................................................................ 6

Cooling Program ........................................................................................................................ 7

Operating Your Thermostat ......................................................................................................... 7

Using Programming Features .................................................................................................... 7

Setting Fan Switch ..................................................................................................................... 9

Setting System Switch ............................................................................................................... 9

Maintaining Your Thermostat .................................................................................................... 10

Installing Batteries .................................................................................................................... 10

Troubleshooting Guide .............................................................................................................. 12

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

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Programming Your Thermostat

When batteries are installed, your thermostat

can be programmed in your hand before it is

installed or after it is mounted on the wall. For

instructions on installing or replacing the

batteries, refer to the Maintaining Your Thermo-

stat section.

Refer to the personal Program Schedule on

page 3 to program your time and temperature

settings for various times of the day.

Four time periods are available during

weekdays — WAKE, LEAVE, RETURN, and

SLEEP. During weekends, only the WAKE and

SLEEP time periods are available. View these

periods individually on the display when you

press the Set Schedule key.

WAKE is the time the thermostat turns on

the heating/cooling equipment after an

energy saving period. 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, and

a lower temperature during cooling

season.)

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 temperature during heating

season, and a higher temperature

during cooling season.)

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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

RETURN is the time the thermostat turns

on the heating/cooling equipment after

an energy saving period. When deciding

what time to set for your RETURN

period, include extra lead time, depend-

ing on the outside temperature and your

furnace response time, to give the

furnace a head start to heat the house

before you arrive home.

SLEEP is the time period you can set for

an energy-saving temperature while you

are sleeping. (For more comfortable

sleeping, some people choose not to

raise the cool temperature during the

night.)

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

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.

When pressing the keys, use the ball of your

finger or a soft pencil eraser.

NOTE: Use of sharp fingernails or pencil

points can damage the keypad.

You will set one schedule for weekdays and

another for weekends because your require-

ments will probably be different for each.

If you make an error at any time during

programming, just press the Run Program key,

and continue again at the last step.

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Program Schedule

HEATING PROGRAM SCHEDULE

Heating Temperature

Weekdays

Start Time

Cooling 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 higher than 88°F (31°C) or lower than 45°F (7°C).

NOTE: If you decide not to program the thermostat, it will automatically control heating at 68°F

20°C), and cooling at 78°F (26°C), 24 hours a day. This guide can be used for program-

ming your new thermostat.

(

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IMPORTANT

Batteries are required for operation and

Use Time keys to program WAKE time and

Temp keys to program WAKE temperature for

Mon-Fri. Repeat sequence for LEAVE, RE-

TURN, and SLEEP.

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. See

Maintaining Your Thermostat section.

USE TO SET

WARMER TEMPERATURE

LCD DISPLAY

USE TO SET

TIME EARLIER

RUN

PROGRAM

KEY

SET CURRENT TIME/DAY

To set the time, press and release the Set

Clock/Day key once. Press the Time keys until

the current time shows.

LEAVE

To set the day, press and release the Set

Clock/Day key again. Press the Time keys until

the current day shows. Press the Run Program

key.

HOLD

TEMP

KEY

Fan Auto On

System Cool Off Heat

USE TO

SET CURRENT

DAY AND TIME

USE TO

SET COOLER

TEMPERATURE

USE TO SET

TIME LATER

HEATING PROGRAM

USE TO SET

PROGRAM PERIOD

With the system switch at HEAT, press and

release the Set Schedule key once. WAKE,

Mon-Fri, and SET appear on the display.

M8473

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Press Set Schedule key until WAKE, SA SU

and SET appear on the display. Use Time keys

to program WAKE time and Temp keys to

program WAKE temperature for Sat-Sun.

Repeat the sequence for SLEEP.

COOLING PROGRAM

With system switch at COOL, follow the

same instructions as for the Heating Program.

After programming, adjust the fan and

system switches, as desired. Press and release

Run Program key to start the program.

Operating Your Thermostat

USING PROGRAMMING FEATURES

Temporarily Change temperature for

current period only—

Hold a temperature indefinitely—

Press Hold Temp key once. Press Temp

keys until display shows desired temperature.

Press Temp keys to set desired temperature. Press Run Program key once to return to the

The change cancels itself at the next scheduled

program change; to cancel sooner, press the

Run Program key.

program.

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Check CurrentTemperature Setting—Press

Cancel a program—Press Set Schedule

Run Program key once. If using TEMPORARY key until the program to cancel shows. Pressing

CHANGE or HOLD features, pressing this key the two Time keys together cancels the

cancels your change.

program.

Check Programs—Press Set Schedule key

repeatedly to see each time and temperature.

Press Run Program key once to return to the

program.

Permanently Change a program—Repeat

the steps in the Heating Program or Cooling

Program sections, as applicable.

Return to the normal program or the starting

program—Press Run Program key once.

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SETTING FAN SWITCH

HEAT: The thermostat controls the heating

system.

Fan switching positions are:

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 runs

on low with the furnace.

LEAVE

FAN ON: The fan runs continuously. Use

for improved air circulation during

special occasions or for more efficient

electronic air cleaning.

Fan Auto On

System Cool Off Heat

SETTING SYSTEM SWITCH

System switching positions control thermo-

stat operation as follows:

FAN SWITCH

SYSTEM

SWITCH

COOL: The thermostat controls the air

conditioning system.

M5783

OFF: Both the heating and air conditioning

systems are off.

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As the batteries are running low, the bAt Lo

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.

Maintaining Your Thermostat

INSTALLING BATTERIES

IMPORTANT

Batteries must be installed for programming

and operation of the thermostat and heat-

ing/cooling system.

1. Purchase two AA alkaline batteries;

nonalkaline batteries do not last as long, and

can leak, causing damage to the thermostat or

wall surface. We recommend Energizer®

batteries.

Make sure the thermostat is set in the

OFF position.

M5781

. Use a coin to remove the battery door.

. Install the fresh batteries, making sure the

positive and negative terminals are oriented

correctly.

5. Replace the battery door.

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If the batteries are not replaced sometime

during the flashing bAt Lo, the indicator

eventually stops flashing. bAt Lo stays on

without flashing, indicating the thermostat and

heating/cooling system stopped working and

the batteries are almost completely dead.

After the batteries are completely dead, the

bAt Lo indicator disappears, leaving a com-

pletely blank display.

INSTALL TWO AA ALKALINE

BATTERIES AS SHOWN

LEAVE

To remove, press down on left ends of

batteries. If the new batteries are installed

within 20 to 30 seconds of removing the old

ones, the thermostat does not have to be

reprogrammed. If the display is blank, the

batteries are dead or incorrectly installed, the

thermostat has to be reprogrammed. See

Programming Your Thermostat section for

instructions.

Fan Auto On

System Cool Off Heat

FAN SWITCH

SYSTEM

SWITCH

M5782

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Troubleshooting Guide

IF…

THEN…

Display will not come on.

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

backward for at least five seconds to reset thermostat.

Correctly replace batteries. 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 88°F (31°C) during

programming.

■ The temperature setting limit is reached. The setting

range is 45°F to 88°F (7°C to 31°C).

Temperature change occurs at

the wrong times.

■ Check 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 neces-

sary.

Heating will not come on.

■ Check that switch on thermostat is set to HEAT. Allow a

minimum of five minutes for time-guard protection to

expire.

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Heating will not come on.

Continued)

■ Check the system fuse or circuit breaker and replace or

(

reset, if necessary.

■

If display is blank or displays bAt Lo, install fresh

batteries.

If temperature setting is higher than current temperature,

and SYSTEM ON indicator is lit, contact your local

dealer.

Cooling will not come on.

■ Check that switch on thermostat is set to COOL. Allow a

minimum of five minutes for time-guard protection to

expire.

■

Check the system fuse or circuit breaker and replace or

reset, if necessary.

If display is blank or displays bAt Lo, install fresh

batteries.

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

at least five minutes after changing the setting before the

air conditioner starts.

■

Make sure outdoor disconnect is engaged (on).

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Cooling will not come on.

Continued)

■ If temperature setting is lower than current temperature,

and SYSTEM ON indicator is lit, move system switch

from COOL to OFF for ten minutes. After ten minutes,

return switch to the COOL position. If the air conditioner

comes on, the compressor could have reached its high-

limit temperature protection and shut down. If air

(

conditioner does not come on after ten minutes and the

SYSTEM ON indicator is lit, contact your local dealer.

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

installed.

■

Too warm or too cool.

■ Press Run Program key to check the current tempera-

ture setting.

■

If desired, change the temperature setting. See Program-

ming Your Thermostat section.

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.

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Thermostat current

■ Check that the wiring hole in the wall behind the

wallplate was 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 on occasion.

temperature setting does not

match the display temperature

to within ± 1°.

■

During recovery from setback or setup, setting and

display temperatures can differ for up to 30 minutes after

the recovery period.

Incorrect temperature

showing on thermostat display.

■ 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.

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NOTICE

This equipment is a Class B digital apparatus, which complies with Canadian Radio Interference

Regulations, CRC c.1374.

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Limited One-Year Warranty

Honeywell warrants this product 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 detective or malfunctions, Honeywell shall

repair or replace it (at Honeywell’s option) within a reasonable period of time.

If the product is detective,

(I) return it, with a bill of sale or other dated proof-of-purchase, to the dealer or contractor 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

1050 Berkshire Lane

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 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.

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Printed on recycled paper containing at

least 10% post-consumer paper fibers.

Printed in U.S.A.

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