Honeywell RTH2300 User Manual
RTH2300
5+2 Programmable Thermostat
Operating
Manual
69-2326ES-04
CAUTION: EQUIPMENT DAMAGE HAZARD
To prevent possible compressor damage, do not use Cooling mode when the
outdoor temperature is below 50°F (10°C).
Need Help?
For assistance with this product please visit http://DIYthermostats.honeywell.com
or call Honeywell Customer Care toll-free at 1-800-468-1502.
Read and save these instructions.
Table of contents
Overview
Thermostat features ..............................2
Quick start .............................................3
Quick reference to controls ...................4
Quick reference to display.....................5
Programming & Operation
Setting the clock....................................6
System switch (Heat/Cool)....................7
Fan switch (Auto/On).............................8
Using the schedule...........................9-11
Temporary schedule override..............12
Permanent schedule override .............13
Compressor protection........................14
Programmable Thermostat RTH2300
Appendices
Battery replacement ........................... 15
In case of difficulty .............................. 16
Customer assistance .......................... 17
One-year limited warranty ..................18
Your new thermostat is pre-programmed
and ready to go!
See page 3 for quick start.
Operating Manual
About your new thermostat
Your new thermostat has been designed to give you many years of reliable service and
easy-to-use, push-button climate control.
Features
• Backlit display is easy to read
• Displays ambient (measured) temperature at all times
• One-touch access to setpoint temperature
• Energy-saving settings for maximum cost savings
• Separate programmable weekday/weekend schedules (5+2 day programming)
• Temporary and permanent override of schedule
• Built-in compressor protection
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Programmable Thermostat RTH2300
This thermostat is ready to go
Simply perform the three steps below and the thermostat is in operation:
Set the clock ................................................................................................ See page 6
Select whether to heat or cool...................................................................... See page 7
Select whether to run the fan continuously or only when needed................ See page 8
This thermostat is pre-set with energy-saving program settings. If you do not wish to use
these settings, you can:
Modify the schedule ....................................................................................See page 11
Temporarily override the schedule ............................................................. See page 12
Permanently override the schedule............................................................ See page 13
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Operating Manual
System switch (see page 7)
• Cool: System is in Cooling mode.
• Off: System is off.
• Heat: System is in Heating mode.
Fan switch (see page 8)
• On: Fan runs continuously.
• Auto: Fan runs only when
heating or cooling is activated.
Up/Down buttons
Press to adjust temperature.
Screen
Lit for 12 seconds when
you press any button.
Press to set clock, day or
schedule (see pages 6 & 11).
Press to override schedule and
hold temperature (see page 13).
Press to run (follow) schedule
(see page 9).
Quick reference to controls
4
Quick reference to display
* When Heat On or Cool On is flashing, compressor protection is engaged (see page 14).
Temperature
The ambient (measured) temperature is
normally displayed. To view the setpoint
temperature, press the Up or Down
button once. The setpoint temperature
will appear for five seconds.
System status
• Cool On: Cooling is activated. *
• Heat On: Heating is activated. *
Low-battery warning
(see page 15)
Setpoint indicator
Appears when the setpoint
temperature is displayed.
Clock
Schedule period
Permanent schedule override
(see page 13)
Temporary schedule override
(see page 12)
Programmable Thermostat RTH2300
5
Operating Manual
Set the clock
Press the Set button. Set Time will appear on the screen and the
time display will flash.
Press the Up or Down button to set the time.
Press the Set button again. Set Day will flash on the screen.
Press the Up or Down button to select the day of the week.
Press the Run button to save the changes & exit. (The changes
are also saved if you do not press any button for 60 seconds.)
NOTE: The clock has lost its settings when the time display flashes. If the thermostat is
following the schedule, it will use the temperature settings programmed for the Wake
period of the weekdays until you readjust the clock.
6
System switch (Heat/Cool)
Use the System switch to place the system in
one of the following modes:
• Cool: System is in Cooling mode.
• Off: System is off.
• Heat: System is in Heating mode.
CAUTION: EQUIPMENT DAMAGE HAZARD.
Do not use Cooling mode when the outdoor temperature is below 50°F (10°C).
Programmable Thermostat RTH2300
7
Operating Manual
Use the Fan switch to select the fan operation.
• Auto: The fan runs only when heating or
cooling is activated (commonly used setting).
• On: The fan runs continuously.
Fan switch (Auto/On)
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Programmable Thermostat RTH2300
Using the schedule
Press the Run button to follow the programmed schedule. For maximum energy savings
while maintaining comfort, you can program the schedule such that the temperature is at
an economical level when you sleep or leave for work and at a comfortable level when you
are awake and at home. You can program up to four periods per day:
Wake Starts when you wake up
Leave Starts when you leave for work
Return Starts when you return home
Sleep Starts when you go to sleep
To program a period, you need to set its start time and its two temperature settings (one
when the thermostat is in cooling mode and another one when it is in heating mode). The
same settings are used every day from Monday to Friday and another set of settings are
used for Saturday and Sunday. For example, you could program all four periods for the
weekdays but only two periods (Wake and Sleep) for the weekends.
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Operating Manual
Energy saving default schedule
This thermostat is pre-set with energy-saving program settings. See the next page if you
wish to modify the settings.
Period
Weekdays Weekend
Start time Heat Cool Start time Heat Cool
Wake 6:00 AM 70°F (21°C) 78°F (25.5°C) 6:00 AM 70°F (21°C) 78°F (25.5°C)
Leave 8:00 AM 62°F (16.5°C) 85°F (29.5°C) 8:00 AM 62°F (16.5°C) 85°F (29.5°C)
Return 6:00 PM 70°F (21°C) 78°F (25.5°C) 6:00 PM 70°F (21°C) 78°F (25.5°C)
Sleep 10:00 PM 62°F (16.5°C) 82°F (27.5°C) 10:00 PM 62°F (16.5°C) 82°F (27.5°C)
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Programmable Thermostat RTH2300
Wake for the
weekdays is set to
6 a.m. and 70°F
To skip a period
(except Wake),
press the Hold
button for 4 seconds
while that period is
displayed.
Modifying the schedule
Press the Set button 3 times until Set Schedule appears. The Wake period is
displayed.
NOTE: To set another period, press the Set button as many times as needed until the
desired period and the desired days are displayed and its time or temperature is flashing.
When the time flashes, press the Up or Down button to set the time.
Press the Set button.
To set the temperature for cooling mode, first place the System switch in Cool. To
set the temperature for heating mode, first place the System switch in Heat.
When the temperature flashes, press the Up or Down button to set the temperature.
Press the Set button.
Repeat steps 2 through 6 to set each of the remaining periods.
Once all changes are made, press the Run button to save them and return to
normal display. (The changes will automatically be saved if you do not press any
button for 60 seconds.)
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Operating Manual
Temporary override of schedule
To temporarily ignore the schedule, press the Up or
Down button until the desired temperature is displayed.
The word Tempo rary will appear on the screen and the
period display will flash to indicate that the current period
has been overridden. The new temperature will be used
until the next period begins.
NOTE: Pressing the Up or Down button once will display the setpoint temperature. To
change the setpoint temperature, press either button more than once.
Press the Run button if you wish to cancel the temporary setting before the beginning of
the next period.
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