Honeywell RTH2310 User manual

Honeywell
Operating
Manual
RTH2310
Programmable Thermostat
69-2229ES-2

CAUTION: EQUIPMENT DAMAGE HAZARD
To prevent possible compressor damage, do not use Cooling mode when the outdoor
temperature is below 50 °F (10 X).
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.
® U.S. Registered Trademark. Patents pending.
© 2008 Honeywell International Inc. All rights reserved.

Table of contents
RTH2310 Programmable Thermostat
About your new thermostat
Thermostat features 2
Early Start 3
Compressor protection 3
Quick reference to controls 4
Quick reference to display 5
Quick start 6
Programming & Operation
Set the clock 7
Select system setting (Heat/Cool) 8
Select fan setting (Auto/On) 9
Using the schedule 10-13
Temporary schedule override 14
Permanent schedule override 15
Appendices
Filter replacement 16
Battery replacement 17
In case of difficulty 18
Customer assistance 19
Limited warranty 20
Your new thermostat is pre-programmed
and ready to got
Soo page 6 for quick start.

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
Backllt display Is easy to read
Displays ambient (measured) temperature at all times
One-touch access to setpoint temperature
• Energy Star® compliant to greatly reduce your heating/cooling expenses
Separate programmable weekday/weekend schedules (5+2 day programming)
Temporary and permanent override of schedule
Early Start ensures right temperature at the right time
Built-in compressor protection

RTH2310 Programmable Thermostat
Early Start
Early Start allows the thermostat to "learn" how long your furnace or air conditioner takes to reach the set
temperature. Simply program the desired times and desired temperatures into the schedule. The thermostat
will determine when to activate heating or cooling so that the desired temperature is attained at the desired
time.
Example: If you set the Wake time to 6 a.m. and the temperature to 70 °F (21 °C). the heat will come on
before the set time, so the temperature is 70 °F (21 °C) by the time you wake at 6 a.m.
Built-in compressor protection
Your thermostat has a feature that helps prevent damage to the compressor of your air conditioning. Because
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, >$• flashes on the screen. When the safe wait time
has elapsed, the icon stops flashing and the compressor turns on.

Operating Manual
Quick reference to controls
Battery compartment (for 2 AA batteries)
Screen
Lit for 12 seconds when
you press the backlight
button or any other button
System switch Fan Switch Programming buttons
(see page 8) (see page 9) (see pages 12 & 13)
Tomperature buttons
Backlight button

Quick reference to display screen
RTH2310 Programmable Thermostat
Day
Time
Current period numbor
Appears when Ihe thermostat
is following the schedule (see
temporary override on page
14 and permanent override on
page 15)
Sotpoint indicator
Appears when the setpoint
temperature is displayed.
8nn
uu
MO
Replace batterlos
(see page 14)
I FILTER
Temperature
The ambient (measured)
temperature is normally
displayed. To view the
setpoint temperature, press
-';' or ■ once. The sotpoint
temperature will appear for
5 seconds.
Heating Is on
Cooling Is on *
Replace filter
(see page 14)
' •§■ flashes when the compressor protection is engaged (see page 3).

Operating Manual
This thermostat is ready to go
Simply perform the three steps below and the thermostat is in operation:
© Set the clock See page 7
© Select whether to heat or cool See page 8
© Select whether to keep the fan on continuously or only when needed See page 9
Your thermostat is pre-programmed with Energy Star® settings (see page 11). If you do not wish to use
these settings, you can:
► Modify the schedule and temperature setpoints See page 12
► Temporarily override the temperature setpoint See page 14
► Permanently override the temperature setpoint See page 15

RTH2310 Programmablo Thormostat
Set the clock
O Press Clk. The hour will flash.
© Press : or Q to set the hour.
© Press Clk. The minutes will flash.
© Press or ;. to set the minutes.
© Press Clk. The day will flash.
© Press or to set the day.
© Press Exit.
Time and day display
Press to start time and day setting
Press lo set the lime or the day
( ) Press to end lime and day selling
NOTE: The time display flashes when the clock has lost its settings

Operating Manual
Select the system setting
Heat Off Cool
QD
Use the System switch to place the system in one of the
following modes:
• Heat: System is in Heating mode.
• Off: System is off.
• Cool: System is in Cooling mode.
NOTE: When you place the thermostat in Cooling mode, you might need to wait up to
five minutes before cooling can start. This is a safety feature for the compressor. * will
flash on the screen until cooling starts.
A
CAUTION: EQUIPMENT DAMAGE HAZARD
Do not use Cooling mode when the outdoor temperature is below 50 °F (10 °C).