Emerson Sensi Smart Thermostat Manual – Sen|Si 1F87U-42WF, ST55

Emerson Sensi Smart Thermostat Manual – Sen|Si 1F87U-42WF, ST55

BUTTONS AND ICONS

The Sensi Smart Thermostat can be operated through Wi-Fi using the Sensi app or it can be operated at the actual wallunit. Advanced features such as thermostat settings, scheduling and email alerts are only available through the Sensi app.

WI-FI STATUS ICON

1. Indicates Wi-Fi connection status.When you turn Wireless Off onthe thermostat, this is blank.
2. BACKLIGHT BUTTONIlluminates the thermostat for 10 seconds
3. TIME Displays current time.
4. KEYPAD LOCKOUT ICONThis icon indicates the thermostatis locked out. No changes can bemade at the thermostat. (Can onlybe enabled from the Sensi app).
5. BATTERY ICONWhen the bars get low, remember tochange the 2 AA Alkaline batteries inthe back of the thermostat face plate.
6. UP ARROW BUTTONAdjusts the temperature set pointor thermostat configuration.
7. CURRENT SET TEMPERATURECurrent set temperature thethermostat will maintain.
8. MENU BUTTONAccess thermostat configurations.(See page 6 for more details).
9. DOWN ARROW BUTTONAdjusts the temperature set pointor thermostat configuration.
10. CURRENT ROOM TEMPERATUREThe room temperature at the thermostat.
11. SCHEDULE BUTTONToggles the schedule On or Off.(The thermostat runs a programbased on time and temperature setpoints when Schedule is On).
12. FAN BUTTONSwitches fan mode from Autoor On. Leave the fan mode onAuto to allow the thermostat tocontrol the fan as necessary.
13. MODE BUTTONSwitches system mode between Heat,Cool, Off or Aux. (Auto Mode is onlyavailable using the Sensi app).

BASIC FUNCTIONALITY

Switching System ModePress 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 ModeIf 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 TemperatureIf 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 HoldWhen 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.

Circulating FanIf 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 OffIf 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”.

MANUAL SETTINGS

Setting the Time ManuallyWhen 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 ScheduleWhen 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 screena. 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.

Example ScheduleIf you need to keep track of your time and temperature set points, use this table.

SAMPLE SCHEDULE

COMPLETE YOUR SCHEDULE

MENU CONFIGURATIONS

Pressing “Menu” at the thermostat allows you to change a series of settings to customize the thermostatfor your specific system. Refer to the chart below for a complete listing of thermostat configurationsand what they stand for. If you are installing the thermostat on the wall for the first time, we highlyrecommend 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, youcan manually configure your thermostat as well. Learn more about how to properly configure yourthermostat by searching “configure” on our support site at sensi.emerson.com/en-us/support.

CONFIGURATION MENU ITEMS REFERENCE

WIRING TERMINALS

See below for definitions of the wiring terminals on the sub-base of the thermostat.

Terminal outputs and wiring diagrams

* 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 ThermostatTerminals?Wire color does not always correspond to the thermostat letters. A white wire may be attached to the “W” terminalon the old thermostat, or it may be attached to a different terminal with a different letter. Be sure to take a photoof the old thermostat that shows the wire colors and terminal letters before labeling and removing any wires.

BACK OF THE FACE PLATE

Below is a picture of the back of the Sensi thermostat face plate. The back plate shows the jumperwires, battery compartment, and some useful information about your thermostat.

1. SENSI SECURITY CODENecessary for connecting to Wi-Fi. Also foundon the Welcome Guide in the packaging.
2. MODEL NUMBERIllustrates whether you purchased theprofessional or the DIY model.
3. APPLE HOMEKIT CODEThe 8 digit code used to add Sensi Thermostat to Apple HomeKit..
4. RC/RH INTERNAL JUMPER WIREOnly clip this if you have separate RC and RHtransformers coming out of the wall.
5. BATTERY COMPARTMENTTwo AA Alkaline batteries are used for back-up purposes. Whenyou see the battery indicator bar on the thermostat display reach3 bars, replace these batteries to maintain Wi-Fi connectivity.
6. DATE CODEWhen your thermostat was manufactured.
7. MAC IDUnique number that identifies the thermostat.

Sensi Smart Thermostat | MANUAL OPERATION GUIDE

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