Honeywell RTH6300B User manual

Operating
Manual
RTH6300B
Programmable Thermostat
69-1925EF-03

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For assistance with this product please visit http://yourhome.honeywell.com
or call Honeywell Customer Care toll-free at 1-800-468-1502
® U.S. Registered Trademark. Patents pending.
Copyright © 2013 Honeywell International Inc. All rights reserved.
Quick Reference Card
Grasp and pull to see basic
operating instructions at a
glance.
Battery Holder
Press down and pull to
remove batteries.
Batteries should be
replaced once a year (see
page 15).

RTH6300B Programmable Thermostat
1 69-1925EF—03
About your new thermostat
Thermostat features....................................2
Programming at a glance............................3
Quick reference to controls .........................4
Quick reference to display...........................5
Programming & Operation
Set time and day.........................................6
Select fan setting (auto/on) ........................7
Select system setting (heat/cool)................8
Using program schedules ...........................9
Program schedule overrides .....................12
Built-in compressor protection ..................14
Appendices
Battery installation.....................................15
In case of difficulty .................................... 16
Customer assistance ................................18
Accessories/replacement parts.................18
1-year limited warranty..............................19
This thermostat is ready to go!
Your new thermostat is pre-programmed
and ready to go.
See page 3 to check settings.
Table of contents

About your new thermostat
Congratulations on the purchase of your new Honeywell thermostat. It 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-savingsettingsformaximumcostsavings.
• Large,clear,backlitdisplayiseasytoread—eveninthedark.
• Displaysbothroomtemperatureandtemperaturesetting.
• Removablebatteryholderforfast,easyreplacement.
• Built-incompressorprotection.
Operating Manual
2

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3 69-1925EF—03
This thermostat is ready to go!
Your new thermostat is pre-programmed and ready to go. All you have to do is set the
time and day. Then check the settings below and change if needed:
1. Set time and day (required for proper operation)..............................See page 6
2. Select fan setting (Auto/On): Preset to Auto......................To change, see page 7
3. Select system setting (Heat/Cool): Preset to Heat............To change, see page 8
4. Program schedules: Preset to energy-saving levels
while you’re at work or asleep (assumes you wake at
6 am, leave at 8 am, return at 6 pm and go to bed
at 10 pm)........................................................................To change, see pages 9-11
ONE-TOUCH TEMP CONTROL: You can override the program schedule at any time, and
manually adjust the temperature (see pages 12-13).

Operating Manual
69-1925EF—03 4
Quick reference to controls
Digital display (see page 5). Battery holder (see page 15).
Temperature buttons
Press to adjust temperature
settings (see pages 11-13).
Hold button
Press to override programmed
temperature control (see page 13).
Function buttons
Press to select the function displayed just above each button.
(Functions change depending on the task.)

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5 69-1925EF—03
Quick reference to display screen
Set Clock/Day/
Schedule
Auto
Wake Wed
Fan System
Heat On
Heat
Heat
Setting
Inside
AM
75
75
6:30
Replace Battery
Current inside temperature
Current program period
Wake/Leave/Return/Sleep
(see pages 9-11)
Set clock/day/schedule
Press to set time, day or
program schedules
(see pages 6 & 11)
Function buttons
Press the button beneath each function to view or
change settings (functions change depending on the task)
Low battery warning
(see page 15) Current time/day
(see page 6)
Temperature setting
(see pages 11-13)
System status
Onwhen“calling”for
heating or cooling;
flashes when waiting for
compressor restart (see
page 14)
System setting
Heat/Cool/Off
(see page 8)
Fan setting
Auto/On(seepage7)

Operating Manual
69-1925EF—03 6
Set the time and day
1. Press the SET CLOCK/DAY/SCHEDULE
button, then press s or t to set
the clock time.
2. Press the SET DAY button, then
press s or t to select the day of
the week.
3. Press DONEtosave&exit.
Note: If the SET CLOCK/DAY/SCHEDULE
option is not displayed, press DONE or
RUN SCHEDULE.
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.
PM
4:30
Set Clock/Day/
Schedule
Auto
Fan System
Heat
Wed
Set Day Set Schedule
Done
Press SET CLOCK/DAY/SCHEDULE, then adjust time
Press SET DAY, then select current day

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Set Clock/Day/
Schedule
Auto
Fan System
Heat
Set Clock/Day/
Schedule
On
Fan System
Heat
Select the fan setting
Press the FAN button to select 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.

Operating Manual
69-1925EF—03 8
Select the system setting
Press the SYSTEM button to select Heat, Cool
or Off.
• Heat: Thermostat controls only the heating
system.
• Cool: Thermostat controls only the cooling
system.
• Off: Heating and cooling systems are off.
Set Clock/Day/
Schedule
Auto
Fan System
Heat
Set Clock/Day/
Schedule
Auto
Fan System
Cool
CAUTION: EQUIPMENT DAMAGE
HAZARD. To prevent possible
compressor damage, do not operate
cooling system when outdoor
temperature is below 50°F (10°C).

RTH6300B Programmable Thermostat
9 69-1925EF—03
Save 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.
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).
WAKE
6:00 am
70 °
LEAVE
8:00 am
62 °
RETURN
6:00 pm
70 °
SLEEP
10:00 pm
62 °

Operating Manual
69-1925EF—03 10
Energy-saving settings for maximum cost savings
This thermostat is pre-set with energy-saving program settings. We recommend these
settings,sincetheycanreduceyourheating/coolingexpenses.(Seenextpagetoadjust
times and temperatures of each time period.)
Wake
(6:00 am)
Leave
(8:00 am)
Return
(6:00 pm)
Sleep
(10:00 pm)
Cool (Mon-Fri)Heat (Mon-Fri) Heat (Sat-Sun) Cool (Sat-Sun)
70 °75 °70 °75 °
62 °83 °62 °
[Orcancelperiod]
83 °
[Orcancelperiod]
70 °75 °70 °
[Orcancelperiod]
75 °
[Orcancelperiod]
62 °78 °62 °78 °

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11 69-1925EF—03
To adjust program schedules
1. Press SET CLOCK/DAY/SCHEDULE, then SET
SCHEDULE.
2. Press s or t to set your weekday Wake time
(Mon–Fri), then press NEXT.
3. Press s or t to set the temperature for this
time period, then press NEXT.
4. Settimeandtemperatureforthenexttime
period(Leave).Repeatsteps2and3foreach
weekday time period.
5. Press NEXT to set weekend time periods
(Sat-Sun), then press DONEtosave&exit.
Note: Make sure the thermostat is set to the system you
want to program (Heat or Cool).
Note: You can press CANCEL PERIOD to eliminate unwanted
timeperiods(exceptWake).
PM
4:30
Set Clock/Day/
Schedule
Auto
Fan System
Heat
Set Day Set Schedule
Done
Mon Tue Wed Thu FriLeave
Set Schedule
Heat
Setting
AM
62
8:00
Done CancelPeriod Next

Operating Manual
69-1925EF—03 12
Program schedule override (temporary)
Press s or tto 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10).Forexample,
if you want to turn up the heat early in the
morning, it will automatically be lowered
when you leave for the day.
To cancel the temporary setting at any
time, press RUN SCHEDULE.
Heat
Setting
Inside
AM
69
75
6:30
Temporary
Run Schedule
Auto
Fan System
Heat
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 to temporarily adjust temperature.

RTH6300B Programmable Thermostat
13 69-1925EF—03
Program schedule override (permanent)
Press HOLD to permanently adjust
the temperature. This will override
the temperature settings for all time
periods.
The“Hold”featureturnsoffthepro-
gram 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 SCHEDULEtocancel“Hold”and
resume the programmed schedule.
Heat
Setting
Inside
AM
69
75
6:30
Run Schedule
Auto
Fan System
Heat
Hold
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 to permanently adjust temperature.

Operating Manual
69-1925EF—03 14
Built-in compressor protection
This feature helps prevent damage to the com-
pressor in your air conditioning or heat pump
system.
Damagecanoccurifthecompressoris
re-started too soon after shutdown. This feature
forces the compressor to wait a few 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.
Cool On
Cool
Setting
Inside
AM
75
75
6:30
Set Clock/Day/
Schedule
Auto
Fan System
Cool
Message flashes until safe restart
time has elapsed.

RTH6300B Programmable Thermostat
15 69-1925EF—03
Battery replacement
Install fresh batteries immediately when the
REPLACE BATTERY warning begins flashing. The
warning flashes about two months before the bat-
teries are depleted.
Evenifthewarningdoesnotappear,youshould
replace batteries once a year, or before leaving
home for more than a month.
If batteries are inserted within two minutes, the
time and day will not have to be reset. All other
settings are permanently stored in memory and
do not require battery power.
Press down and pull to remove.
Insert fresh AA alkaline
batteries, then reinstall
battery holder.
Replace Battery

Operating Manual
69-1925EF—03 16
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 • MakesurefreshAAalkalinebatteriesarecorrectlyinstalled
(see page 15).
Temperature
settings do not
change
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).
To restore default
settings
Follow these steps to restore default settings (see page 10):
1. Press SET CLOCK/DAY/SCHEDULE.
2. Press SET SCHEDULE.
3. Press DONE and NEXT at the same time for 4 seconds.

RTH6300B Programmable Thermostat
17 69-1925EF—03
In case of difficulty
Heating or cooling
system does not
respond
• PressSYSTEM button to set system to Heat. Make sure the temperature is
set higher than the Inside temperature.
• PressSYSTEM button to set system to Cool. Make sure the temperature is
set lower than the Inside temperature.
• Checkcircuitbreakerandresetifnecessary.
• Makesurepowerswitchatheating&coolingsystemison.
• Makesurefurnacedoorisclosedsecurely.
• Wait5minutesforthesystemtorespond.
“Cool On” or
“Heat On” is
flashing
•Compressor protection feature is engaged. Wait 5 minutes for
the system to restart safely, without damage to the compressor
(see page 14).
Other problems • Iftheabovemeasuresdonotresolvetheproblem,checktheInCaseof
Difficultysectioninyourthermostat Installation Guide .

Operating Manual
69-1925EF—03 18
Customer assistance
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 remove the battery holder and
note your model number and date code before call-
ing.
Accessories/replacement parts
To order, please call Honeywell Customer Care toll-
free at 1-800-468-1502.
Battery holder......................Part No. 50007072-001
Cover plate assembly*......... Part No. 50002883-001
*Use to cover marks left by old thermostats.
Model number Datecode
xxxxxxx xxxxxxx