Honeywell RTH1100 series User manual

Operating
Manual
RTH1100 Series
Non-programmable Thermostat
69-2447ES-03

Table of contents
Read and save these instructions.
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
® U.S. Registered Trademark. Patents pending.
Copyright © 2010 Honeywell International Inc. All rights reserved.
This manual covers the RTH1100 model.
CAUTION: EQUIPMENT DAMAGE HAZARD. To prevent possible compressor damage,
do not operate cooling system when outdoor temperature is below 50°F (10°C).

RTH1100
1 69-2447ES—03
Table of contents
About your new thermostat
Thermostat features................................... 2
Quick reference to controls....................... 3
Quick reference to display screen ............ 4
Fan setting.................................................. 5
System setting ........................................... 6
Built-in compressor protection ................. 7
Temperature adjustment............................ 8
Appendices
Battery replacement .................................. 9
Customer assistance ............................... 10
In case of difficulty...................................11
Warranty ................................................... 12
This thermostat is ready to go!
Your new thermostat is pre-programmed
and ready to go.
See page 4 to check settings.

Operating Manual
69-2447ES—03 2
Table of contents
Congratulations! Your new thermostat has been designed to give you many years of
reliable service and easy-to-use climate control.
Features
• Backlitdisplayiseasytoread.
• Displaysroomtemperatureatalltimes.
• One-touchaccesstosetpointtemperature.
• Built-incompressorprotection.
2
Doyouneedassistance?
We are here to help.
Call 1-800-468-1502.
About your new thermostat

RTH1100
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Table of contents
M29995
sand tbuttons
Press either button once to display the setpoint
temperature for 5 seconds. Press repeatedly to
change the temperature.
System switch
(see page 5)
Fan Switch
(see page 6)
Screen
Lit for 12 seconds when you press the
backlight button, s button or t button
Battery compartment
(for 2 AA batteries)
Backlight
button
Quick reference to controls

Operating Manual
69-2447ES—03 4
Table of contentsQuick reference to display screen
Temperature
The room temperature is normally
displayed. To display the set
temperature, press the sor
tbutton once. The setpoint
temperature will appear for 5
seconds.
Setpointindicator
Appears
when the set
temperature
is displayed
Replace batteries
(see page 7) Other display messages:
Cooling system is activated
Heating system is activated
M32066

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Table of contents
Use the Fan switch to select the fan operation:
• On: Fan is always on.
• Auto: Fan runs only when the heating or
cooling system is on.
M32068
Fan setting

Operating Manual
69-2447ES—03 6
Table of contentsSystem setting
Use the System switch to select the system operation:
• Heat: Thermostat controls only the heating system.
• Off: All systems are off.
• Cool: Thermostat controls only the 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).
M32067

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7 69-2447ES—03
Table of contents
Flashes when the compressor
protection is engaged.
This feature helps prevent damage to the compressor 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 5 minutes efore restarting.
Duringthewaittime,willflashonthescreen.Whenthesafewaittimehaselapsed,
stops flashing and the compressor turns on.
M32070
Built-in compressor protection

Operating Manual
69-2447ES—03 8
Table of contentsTemperature adjustment
Press the sor t button to adjust
the temperature. The setpoint
temperature is displayed while
you are setting the temperature
and for the next 5 seconds. The
display will then return to the
room temperature.
NOTE: Make sure the thermostat is set to the system you want to control (heat or cool).
Appears when the set
temperature is displayed.
M32069