The Sensi Smart Thermostat can be operated through Wi-Fi using the Sensi app or it can be operated at the actual wall
unit. Advanced features such as thermostat settings, scheduling and email alerts are only available through the Sensi app.
WIFI STATUS ICON
Indicates Wi-Fi connection status.
When you turn Wireless Off on
the thermostat, this is blank.
BACKLIGHT BUTTON
Illuminates the thermostat for 10 seconds
UP ARROW BUTTON
Adjusts the temperature set point
or thermostat configuration.
CURRENT SET TEMPERATURE
Current set temperature the
thermostat will maintain.
SCHEDULE BUTTON
Toggles the schedule On or Off.
(The thermostat runs a program
based on time and temperature set
points when Schedule is On).
FAN BUTTON
Switches fan mode from Auto
TIME
Displays current time.
KEYPAD LOCKOUT ICON
This icon indicates the thermostat
is locked out. No changes can be
made at the thermostat. (Can only
be enabled from the Sensi app).
BATTERY ICON
MENU BUTTON
Access thermostat configurations.
(See page 6 for more details).
DOWN ARROW BUTTON
Adjusts the temperature set point
or thermostat configuration.
CURRENT ROOM TEMPERATURE
The room temperature at the thermostat.
or On. Leave the fan mode on
Auto to allow the thermostat to
control the fan as necessary.
MODE BUTTON
Switches system mode between Heat,
Cool, Off or Aux. (Auto Mode is only available using the Sensi app).
When the bars get low, remember to
change the 2 AA Alkaline batteries in
the back of the thermostat face plate.
Sensi Smart Thermostat | MANUAL OPERATION GUIDE 3
BASIC FUNCTIONALITY
Switching System Mode
Press the “Mode” button to switch between all available system mode settings. Whenthe Mode is “Off” the thermostat will not bring on your heating or cooling systems.
Fan Mode
If you want to circulate the indoor blower, you can switch Fan to “On.” Turn theFan back to “Auto” when you want the thermostat to control your indoor bloweras necessary. Leaving the Fan in “On” will run your blower continuously.
Holding One Temperature
If you want to hold one temperature, turn Schedule “Off.” Then, adjust theset point using the up and down arrow buttons. The thermostat will holdthis temperature, in the set Mode, until you turn Schedule back “On” or untilyou adjust the set point again using the up and down arrow buttons.
Temporary Hold
When your schedule is set to “On,” your Sensi thermostat controls your home based onthe time and temperature settings in the current schedule. To temporarily change yourtemperature use the up and down arrows in the app or on the thermostat. Your Sensithermostat will display “Temporarily Set To” on the thermostat and will hold your newtemperature until the next scheduled set point with a minimum hold time of two hours.
Sensi Smart Thermostat | MANUAL OPERATION GUIDE 4
BASIC FUNCTIONALITY
Circulating Fan
If you want to circulate the air in your home using your indoor blower fan, you can setthis feature in the app or at the thermostat. A percentage is selected to indicate howoften the fan should run each hour, You can set 5% increments from 10% – 100%.
EXAMPLE:
If you set the Circulating Fan to 50%, the fan will run 30 minutes every hour.
If any heat/cool cycles occur during the hour, their runtimeis subtracted from the overall fan run time.
Setting the feature from thethermostat:
1. Press “Menu”
2. Press “Next” until you come to “Fn Setup”.
3. Use the up arrow button to toggle the percentage you’d like the fan to run each hour.
4. Press “Exit”
Turn Wi-Fi Off
If connecting to Wi-Fi is not an option, you can turn off Wi-Fi on the thermostatand manually set a time and a schedule from the wall unit. To turn off Wi-Fi:
1. Press “Menu”.
2. Press “Next” until you see “Wireless (Setup)” at the top of the screen.“On” should be flashing at the top.
3. Use the up or down arrow button to change it to “Off”.
4. Press “Exit”.
Sensi Smart Thermostat | MANUAL OPERATION GUIDE 5
MANUAL SETTINGS
Setting the Time Manually
When connecting the thermostat to Wi-Fi, the time will sync automatically. If notconnecting to Wi-Fi, follow these steps to set the time at the thermostat.
1. Turn Wi-Fi Off. (Refer to section “Turn Wi-Fi Off” on page 4).
2. Press and hold the “Schedule” button.
3. The screen will go blank and the time will start flashing at the top. Use the up and downarrow buttons to rotate through the times until you get to the appropriate time of day.
4. Press “Exit”.
Setting a Schedule
When connecting the thermostat to Wi-Fi, the schedule isprogrammed based on time and temperature set points from theSensi app. If you are not connecting to Wi-Fi, follow these stepsto set a basic 7 day schedule with 4 mandatory set points.
(More robust scheduling options are only available through the Sensi app.)
1. Turn Wi-Fi Off. (Refer to section “Turn Wi-Fi Off” on page 4).
2. Use the “Mode” button to set which type of schedule it will be: Heat or Cool.
3. Press and hold the “Schedule” button, until you see the time flash at the top of the screen
a. Adjust the time on the thermostat if needed, using the up and down arrow buttons.
4. Press “Next”
5. You will see a large number in the middle of the screen. This refers to your set point.
a. The time will be flashing at the top of the screen. Adjust the time ofthe first set point using the up and down arrow buttons.
b. Press “Next”. The set point will be flashing. Adjust the setpoint using the up and down arrow buttons.
c. Press “Next”.
d. Repeat steps a-c for the second, third and fourth set points.
6. Press “Exit”.
7. Make sure “Schedule” is set to “On” on the thermostat.
Sensi Smart Thermostat | MANUAL OPERATION GUIDE 6
MANUAL SETTINGS
Example Schedule
If you need to keep track of your time and temperature set points, use this table.
SAMPLE SCHEDULE
PERIODDAILY START TIMEDAILY TEMP
1st6:00 am70° F
2nd8:00 am62° F
Heat
3rd5:00 pm70° F
4th10:00 pm62° F
1st6:00 am78° F
2nd8:00 am85° F
Cool
3rd5:00 pm78° F
4th10:00 pm82° F
COMPLETE YOUR SCHEDULE
PERIODDAILY START TIMEDAILY TEMP
1st6:00 am
2nd8:00 am
Heat
3rd5:00 pm
4th10:00 pm
1st6:00 am
2nd8:00 am
Cool
3rd5:00 pm
4th10:00 pm
Sensi Smart Thermostat | MANUAL OPERATION GUIDE 7
MENU CONFIGURATIONS
Pressing “Menu” at the thermostat allows you to change a series of settings to customize the thermostat
for your specific system. Refer to the chart below for a complete listing of thermostat configurations
and what they stand for. If you are installing the thermostat on the wall for the first time, we highly
recommend that you download the Sensi app and follow the installation instructions.
However, if you are experiencing an issue or you want to check your system configurations, you
can manually configure your thermostat as well. Learn more about how to properly configure your
thermostat by searching “configure” on our support site at sensi.emerson.com/en-us/support.
CONFIGURATION MENU ITEMS REFERENCE
Display Code Menu itemDefaultOptions
Wireless Setup
Connects Thermostat to Wi-Fi network
Fahrenheit or CelsiusF
Outdoor Equipment
Configuration
Cooling or heat pumps
Indoor Equipment
Configuration
For Gas or Electric Heat
Reversing Valve Position Selects “O” or
“B” Setting For Heat Pumps Only
FnCirculating FanOFFOff/10% – 100% (5% increments)
H AA
H SP
dH AA
dH SP
Humidification
Add Accessory
Humidification
Set Point
EL1– Electric 1 (Single Stage)
EL2– Electric 2 (Two-Stage)
FAn
GA1 Gas 1 (Single Stage)
GA2 Gas 2 (Two-Stage)
O
B
2
Od/Oc
Od – Optimal dehumidification
(Overcool to dehumidify)
Oc – Optimal comfort
(Wired dehumidification)
(Single Stage)
(Two-Stage)
Sensi Smart Thermostat | MANUAL OPERATION GUIDE 8
WIRING TERMINALS
See below for definitions of the wiring terminals on the sub-base of the thermostat.
Terminal outputs and wiring diagrams
TERMINAL LABELDEFINITION
RH*Power for heating, 24V
RC*Power for cooling, 24V
C**Common wire, 24V
GIndoor blower (fan)
YFirst outdoor stage cooling on conventional systems or first heat and cool on heat pump systems
Y2/*
W/EFirst indoor stage heat on conventional systems or first stage auxiliary/emergency heat on heat pump systems
W2/*
O/BChangeover (reverse valve) connection for heat pump or zone panel systems
Second outdoor stage cooling on conventional systems or second heat and
cool on two stage heat pump systems or humidifier
Second indoor stage heat on conventional systems or second stage auxiliary/
emergency heat on heat pump systems or dehumidifier
LHeat Pump system, “L” wire connection
* If the old thermostat has separate RC and RH wires coming out of the wall, clip the RC/
RH jumper on the back of the thermostat above the battery compartment.
**The common wire could be labeled “C” on your old thermostat, or it could be labeled “B”
or “X.” Please refer to the owner’s manual of your old thermostat for clarification.
Does Wire Color Correspond to the Thermostat
Terminals?
Wire color does not always correspond to the thermostat letters. A white wire may be attached to the “W” terminal
on the old thermostat, or it may be attached to a different terminal with a different letter. Be sure to take a photo
of the old thermostat that shows the wire colors and terminal letters before labeling and removing any wires.
Sensi Smart Thermostat | MANUAL OPERATION GUIDE 9
BACK OF THE FACE PLATE
Below is a picture of the back of the Sensi thermostat face plate. The back plate shows the jumper
wires, battery compartment, and some useful information about your thermostat.
SENSI SECURITY CODE
Necessary for connecting to Wi-Fi. Also found
on the Welcome Guide in the packaging.
BATTERY COMPARTMENT
Two AA Alkaline batteries are used for back-up purposes. When
you see the battery indicator bar on the thermostat display reach
3 bars, replace these batteries to maintain Wi-Fi connectivity.
MODEL NUMBER
Illustrates whether you purchased the
professional or the DIY model.
APPLE HOMEKIT CODE
The 8 digit code used to add Sensi Thermostat to Apple HomeKit..
RC/RH INTERNAL JUMPER WIRE
DATE CODE
When your thermostat was manufactured.
MAC ID
Unique number that identifies the thermostat.
Only clip this if you have separate RC and RH
transformers coming out of the wall.