Honeywell RTH111 series User manual

Operating
Manual
RTH111 S e r i e s
Non-Programmable Thermostat
69-2603EF-01

About your new thermostat
Thermostat features.................................... 1
Quick reference to controls ......................... 3
Quick reference to display........................... 4
Operation
Select system setting.................................. 5
Select fan setting ........................................ 6
Adjust the temperature................................ 7
Compressor protection................................ 8
Appendices
Battery replacement.................................... 9
Customer assistance ................................ 10
In case of difficulty .................................... 11
Limited warranty........................................ 13
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
Table of contents
® U.S. Registered Trademark. Patents pending.
Copyright © 2012 Honeywell International Inc. All rights reserved.
CAUTION: EQUIPMENT
DAMAGE HAZARD.
To prevent possible compressor
damage, do not operate cooling
system when outdoor temperature
is below 50°F (10°C).

RTH111
1 69-2603EF—01
About your new thermostatAbout 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
• Displaysambient(measured)temperatureatalltimes
• One-touchaccesstosetpointtemperature
• Built-incompressorprotection
Operating Manual

Operating Manual
69-2603EF—01 2
About your new thermostatThis thermostat is ready to go!
Simply perform the three steps below and the thermostat is in operation:
1. Select system setting: Preset to Off....................................To change, see page 5
2. Select fan setting: Preset to Auto .......................................To change, see page 6
3. Set the temperature using the
Up or Down buttons............................................................To change, see page 7

RTH111
3 69-2603EF—01
About your new thermostat
M32761
Heat Off Cool Auto On
Fan
Quick reference to controls
Up/Down buttons
Press to adjust temperature.
Fan Switch (see page 6)
On: Fan runs continuously.
Auto: Fan runs only when heating
or cooling system is on.
System switch (see page 5)
• Cool: Cooling system control.
• Off: All systems off.
• Heat: Heating system control.

Operating Manual
69-2603EF—01 4
About your new thermostat
Lo
Batt
Set
Cool
77
M32763
On
Quick reference to display screen
Low battery warning
(see page 9)
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 system is on.
Heat on: Heating system is on.
WhenCoolOnisflashing,compressor
protection is engaged (see page 8).
Setpoint indicator
Appears when the setpoint
temperature is displayed

RTH111
5 69-2603EF—01
M32761
Heat Off Cool Auto On
Fan
Select the system 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).

Operating Manual
69-2603EF—01 6
M32761
Heat Off Cool Auto On
Fan
Select the fan setting
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.
Set FAN switch to choose whether the fan
runs continuously or only as needed.

RTH111
7 69-2603EF—01
About your new thermostat
M32764
Heat Off Cool Auto On
Fan
Set
Cool
77
On
Adjust the temperature
Press sor tto adjust the temperature.
Note: Make sure the thermostat is set to the
system you want to control (heat or cool).

Operating Manual
69-2603EF—01 8
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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. When the safe wait time has
elapsed, the message stops flashing and the
compressor turns on.
Message flashes until safe restart
time has elapsed.
Set
Cool
77
M32769
On