Honeywell RTH4300B User Manual [en, es, fr]

RTH4300B

69-1771EFS

Programmable Thermostat

Operating
Manual

Quick Reference Card

Grasp and pull to see basic operating instructions at a glance.

This manual covers the following model:

RTH4300B: For 1 Heat/1 Cool systems

CAUTION: EQUIPMENT DAMAGE HAZARD.

To prevent possible compressor damage, do not operate cooling system when outdoor
temperature is below 50°F (10°C).

Need Help?

For assistance with this product please visit http://yourhome.honeywell.com

or call Honeywell Customer Care toll-free at 1-800-468-1502

Read and save these instructions.

® U.S. Registered Trademark. Patents pending.

Copyright © 2006 Honeywell International Inc. All rights reserved.

Table of contents

RTH4300B Programmable Thermostat

About your new thermostat

Thermostat features ...................................2

Quick reference to controls .......................3

Quick reference to display ........................ 4

Programming & Operation

Set time and day ........................................ 5

Select system setting ................................6

Select fan setting .......................................7

Using program schedules .........................8

Program schedule overrides ...................11

Compressor protection ............................13

Appendices

Battery replacement ................................14

In case of difficulty...................................15

Customer assistance ...............................17

Accessories ............................................. .17

1-year limited warranty ............................18

This thermostat is ready to go!

Your new thermostat is pre-programmed

and ready to go.

See page 9 to check settings.

1

Operating Manual

About your new thermostat

Your new Honeywell thermostat has been designed to give you many years of reliable
service and easy-to-use, push-button climate control.

Features

• Separately programmable weekday/weekend schedules.

• One-touch temp control overrides program schedule at any time.

• Energy Star® compliant to greatly reduce your heating/cooling expenses.

• Large, clear display is easy to read.

• Displays both room temperature and temperature setting.

• Built-in compressor protection.

2

About your new thermostatQuick reference to controls

Temperature adjustment (see page 10-12)

Fan Switch (see page 7)
On: Fan runs continuously.
Auto: Fan runs only when heating

or cooling system is on.

RTH4300B Programmable Thermostat

• Set: Press to set time/day/
schedule.

• Hold: Press to override
programmed temperature control.

• Run: Press to resume program
schedule.

System switch (see page 6)

• Cool: Cooling system control.

• Off: All systems off.

• Heat: Heating system control.

3

Operating Manual

Wake

Wed

Heat On

Set To

Inside

AM

75

75

6:30

Replace Batt

About your new thermostatQuick reference to display screen

Low battery warning

(see page 14)

Current inside
temperature

Current program period

Wake/Leave/Return/Sleep
(see pages 8-9)

Temperature setting
(see pages 10-12)

System status
Cool on: Cooling

system is on.
Heat on: Heating
system is on.

Current day/time (see page 5)

4

About your new thermostatSet the time and day

Set
Clock

AM

6:30

Wed

Set Day

RTH4300B Programmable Thermostat

Press SET, then adjust time.

Press SET, then select current day.

1. Press the SET button, then press s or t
to set the clock time.

2. Press the SET button, then press s or t
to select the day of the week.

3. Press RUN to save & exit.

Note: If the display flashes Set Clock, the
thermostat will follow your settings for the
weekday “Wake” time period until you reset
the time and day.

5

Operating Manual

About your new thermostatSelect the sytstem setting

The SYSTEM switch can be set to control
your heating or cooling system, depend­ing on the season.

• Cool: Cooling system control.

• Off: All systems are off.

• Heat: Heating system control.

Set SYSTEM switch to control the
heating or cooling system.

CAUTION: EQUIPMENT DAMAGE
HAZARD. To prevent possible

compressor damage, do not operate
cooling system when outdoor
temperature is below 50°F (10°C).

6

About your new thermostatSelect the fan setting

Set FAN switch to choose whether the fan
runs continuously or only as needed.

RTH4300B Programmable Thermostat

Set the FAN switch to Auto or On.
In “Auto” mode (the most commonly used

setting), the fan runs only when the heat­ing or cooling system is on.

If set to “On,” the fan runs continuously.
Use this setting for improved air circula­tion, or for more efficient air cleaning.

7

Operating Manual

About your new thermostatSave money by setting program schedules

It’s easy to program your system for maximum energy savings. You can program four
time periods each day, with different settings for weekdays and weekends.

WAKE

6:00 am

70

LEAVE

8:00 am

62

RETURN

6:00 pm

70

SLEEP

10:00 pm

62

Set to the time you awaken and the temperature you want
during the morning, until you leave for the day.

°

Set to the time you leave home and the temperature you
want while you are away (usually an energy-saving level).

°

Set to the time you return home and the temperature you
want during the evening, until bedtime.

°

Set to the time you go to bed and the temperature you want
overnight (usually an energy-saving level).

°

8

RTH4300B Programmable Thermostat

About your new thermostatEnergyStar® settings for maximum cost savings

This thermostat is pre-set to use EnergyStar® program settings. We recommend these
settings, since they can reduce your heating/cooling expenses by as much as 33%.
(See next page to adjust times and temperatures of each time period.)

Cool (Mon-Fri)Heat (Mon-Fri) Heat (Sat-Sun) Cool (Sat-Sun)

Wake

(6:00 am)

Leave

(8:00 am)

Return

(6:00 pm)

Sleep

(10:00 pm)

70
62
70
62

°

°

°

°

75
83
75
78

9

°

°

[Or cancel period]

°

[Or cancel period]

°

70
62

70

62

°

°

°

°

°

75

°

83

[Or cancel period]

°

75

[Or cancel period]

°

78

Operating Manual

Wake

Set Schedule

MonTueWedThuFri

Heat

Set To

AM

75

6:30

Wake

Set Schedule

MonTueWedThuFri

Heat

Set To

AM

75

6:30

About your new thermostatTo adjust program schedules

Press SET 3 times, then adjust time.

Press SET, then set desired temperature.

1. Press SET until Set Schedule is displayed.

2. Press s or t to set your weekday Wake

time (Mon-Fri), then press SET.

3. Press s or t to set the temperature for this

time period, then press SET.

4. Set time and temperature for the next time
period (Leave). Repeat steps 2 and 3 for each
weekday time period.

5. Press SET to set weekend time periods (Sat­Sun), then press RUN to save & exit.

Note: Make sure the thermostat is set to the system
you want to program (Heat or Cool).

Note: To cancel an unwanted time period (except
Wake), press and hold s + HOLD for 4 seconds
while in the Set Schedule mode.

10

RTH4300B Programmable Thermostat

Set To

AM

70

6:30

Temporary

Set To

AM

75

6:30

About your new thermostatProgram schedule override (temporary)

Press to temporarily adjust temperature.

Press to cancel temporary setting and
resume program schedule.

Note: Make sure the thermostat is set to the
system you want to control (heat or cool).

Press s or t to immediately adjust the
temperature. This will temporarily override
the temperature setting for the current
time period.

The new temperature will be maintained
only until the next programmed time
period begins (see page 8). For example,
if you want to turn up the heat early in the
morning, it will automatically be lowered
later, when you leave for the day.

To cancel the temporary setting at any
time, press RUN.

11

Operating Manual

Set To

AM

70

6:30

Hold

Set To

AM

75

6:30

About your new thermostatProgram schedule override (permanent)

Press to permanently adjust temperature.

Press to cancel “Hold” setting and resume
program schedule.

Note: Make sure the thermostat is set to the
system you want to control (heat or cool).

Press HOLD to permanently adjust
the temperature. This will override the
temperature settings for all time periods.

The “Hold” feature turns off the program
schedule and allows you to adjust the
thermostat manually, as needed.

Whatever temperature you set will be
maintained 24 hours a day, until you
manually change it, or press RUN to
cancel “Hold” and resume the program
schedule.

12

About your new thermostatBuilt-in compressor protection

Wake

Wed

Cool

On

Set ToInside

AM

75

75

6:30

Message flashes until safe restart
time has elapsed.

RTH4300B Programmable Thermostat

This feature helps prevent damage to the
compressor in your air conditioning or heat
pump system.

Damage can occur if the compressor is
restarted too soon after shutdown. This fea­ture forces the compressor to wait 5 minutes
before restarting.

During the wait time, the display will flash
the message Cool On (or Heat On if you have
a heat pump). When the safe wait time has
elapsed, the message stops flashing and the
compressor turns on.

13

Operating Manual

About your new thermostatBattery replacement

Pull at bottom to
remove thermostat
from wallplate.

Turn thermostat over,
insert fresh AA alkaline
batteries, then reinstall
thermostat.

Install fresh batteries when the
REPLACE BATT warning begins flash­ing. The warning flashes about two
months before the batteries are
depleted.

Replace batteries once a year, or
before leaving home for more than a
month. If batteries are inserted within
one minute, the time and day will not
have to be reset. All other settings are
permanently stored in memory, and
do not require battery power.

14

RTH4300B Programmable Thermostat

In case of difficulty

If you have difficulty with your thermostat, please try the following suggestions.
Most problems can be corrected quickly and easily.

Display is blank • Check circuit breaker and reset if necessary.

• Make sure power switch at heating & cooling system is on.

• Make sure furnace door is closed securely.

• Make sure fresh AA alkaline batteries are correctly installed (see
page 14).

Heating or
cooling system
does not respond

• Set system switch to Heat (see page 6). Make sure the temperature is
set higher than the Inside temperature.

• Set system switch to Cool (see page 6). Make sure the temperature is
set lower than the Inside temperature.

• Wait 5 minutes for the system to respond.

15

Operating Manual

In case of difficulty

Temperature
settings do not
change

“Cool On” or
“Heat On” is
flashing

“Heat On” is not
displayed

“Cool On” is not
displayed

To restore
Energy Star®
default settings

Make sure heating and cooling temperatures are set to acceptable ranges:

• Heat: 40° to 90°F (4.5° to 32°C).

• Cool: 50° to 99°F (10° to 37°C).

• Compressor protection feature is engaged. Wait 5 minutes for the system
to restart safely, without damage to the compressor (see page 13).

• Set the System switch to Heat, and set the temperature level above the
current room temperature (see page 6).

• Set the System switch to Cool, and set the temperature level below the
current room temperature (see page 6).

Follow these steps to restore Energy Star default settings (see page 9):

1. Press SET 3 times to display “Set Schedule.”

2. Press and hold SET and RUN at the same time for 4 seconds.

3. Press RUN.

16

About your new thermostat

Customer assistance

RTH4300B Programmable Thermostat

Pull at bottom to
remove thermostat
from wallplate.

Turn thermostat over
to find model number
and date code.

For assistance with this product, please visit

http://yourhome.honeywell.com.

Or call Honeywell Customer Care toll-free at

1-800-468-1502.

To save time, please note your model number
and date code before calling.

Accessories

To order, please call Honeywell Customer
Care toll-free at 1-800-468-1502.

Cover plate assembly* ...Part No. 50002883-001

*Use to cover marks left by old thermostats.

17

Operating Manual

1-year limited 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 determined to
be defective or malfunctions, Honeywell shall repair or replace it (at Honeywell’s option).

If the product is defective,
(i) return it, with a bill of sale or other dated proof of purchase, to the place from which you pur-

chased it; or
(ii) call Honeywell Customer Care at 1-800-468-1502. Customer Care will make the determina-

tion whether the product should be returned to the following address: Honeywell Return Goods,
Dock 4 MN10-3860, 1885 Douglas Dr. N., Golden Valley, MN 55422, or whether a replacement
product can be sent to you.

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

18