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SENSITM TOUCH SMART THERMOSTATInstallation guideModels: 1F95U-42WF series, ST75 series, NH-AWIFI, OH-AWIFIVersion: January 2020 2020 Emerson Electric Co. All rights reservedR-5021.

Table of ContentsDownloading the app and creating an account3Installing the Sensi thermostat4Connecting the Sensi thermostat7Troubleshooting8Notes10Sensi Touch Smart Thermostat INSTALLATION GUIDE2

DOWNLOADING THE APP AND CREATING AN ACCOUNTYou Will NeedGather this information before you begininstallation for a smoother walk through. Wi-Fi Network Name/SSID- Make sure this is a 2.4GHz network. Wi-Fi Network Password Screwdriver Hardware in Sensi Touch Smart Thermostat packagingDownload the Sensi appThe Sensi Touch Smart Thermostat is a Wi-Fi enabled device. Toinstall and configure your thermostat correctly, you must use theSensi app. To start the installation process, download the Sensi appto your smart phone or tablet. It is a free download. The Sensi apprequires the following Operating System (OS) software to download:Android (Google Play) version 5.0 or lateriOS (Apple) version 10.0 or later*Note that in the iOS store, the Sensi App will ONLY appear on an “iPhoneonly” search. On an iPad, change the search criteria in the App Store.Create an accountWhen you download the Sensi app, you will be prompted tocreate an account. This is required to access your thermostatremotely and use all the features Sensi offers. Use a valid emailaddress and a password of your choosing to create an account.Remember this email address and password. Your Sensi thermostatwill be linked to this email address once it is registered.9:41EmailPasswordForget Password?Create AccountSign InInstall Sensi Thermostat with HomeKit*Note that the “Install a device” option is only for installing to HomeKitonly. You will lose available features without creating an account.Sensi Touch Smart Thermostat INSTALLATION GUIDE3

INSTALLING THE SENSI THERMOSTATInstallation9:41Once you have downloaded the Sensi app, and have created an account, youare ready to install the thermostat to your wall and connect it to Wi-Fi. If nothermostats are registered yet, tap the plus ( ) sign to add a thermostat.First, choose which thermostat you purchased. The Sensi TouchSmart Thermostat option is for the following model numbers:Add ThermostatCancelSelect your thermostat74Touch Wi-Fi Thermostat 1F95U-42WF series ST75 series NH-AWIFI, OH-AWIFIWi-Fi ThermostatNote: You can check your model number on theback of the thermostat faceplate.9:41Install PathAdd ThermostatCancelIs you thermostat on the wall?After creating an account, signing in and choosing your model, the appwill ask you whether or not the thermostat is already on the wall. You willeither choose “No, it needs to be installed,” or “Yes, it is on the wall.”The first option will walk through the entire installation process. If you didnot have this thermostat professionally installed, choose this option.Use HomeKitNo, it needsto be installedYes, it is on the wallThe second option is for connecting your thermostat to Wi-Fi only. If you havehad a professional install your thermostat, and you just need to connectthe Sensi thermostat to your home Wi-Fi network, choose this option.PreviousNo, it needs to be installed.This option will walk you through the entire installation process, includingidentifying and connecting your wiring, as well as connecting to Wi-Fi. TheSensi app will walk through a step-by-step process for installation.Gather Toolsand Package ContentsGather all the necessary tools for installation.Sensi Touch Smart Thermostat INSTALLATION GUIDE9:41InstallCancelGather Tools and Package ContentsBefore we begin, you’ll need to gather therolling tools: Phillips and/or FlatheadScrewdriver, Drill with 3/16 (4 mm) bit, WireCutter. You may also need needle-nosepliers.Video: Installation overviewPreviousNext4

INSTALLING THE SENSI THERMOSTATTurn Off PowerTurn off the power to your heating and air conditioningsystem before handling your thermostat wires.9:419:41InstallCancelInstallCancelTurn Off PowerDo not remove your wires yet!DismissRemove Old Thermostat CoverRemove the cover using a screwdriver or by pushingthe pressure latch. Some covers pull off while othersneed to be released using a screwdriver.Turn off the power to your heating and airconditioning system by using your fuse boxor the switch next to your furnace.CAUTIONConfirm power is OFF. Try to turn on heating or coolingby changing the temperature on your old thermostat.Photograph Your WiringTHIS IS IMPORTANT. The Sensi app will prompt you to take a pictureof your existing thermostat and old wiring in case you need it later.Video: How to turn off powerPreviousVideo: How do I remove my old thermostat cover?NextPrevious9:41Next9:41InstallCancelThis can be helpful for troubleshooting with our technicalsupport team if necessary. The picture you take willbe saved to your camera roll or photo gallery.Remove the thermostat cover by using ascrewdriver or by pushing the pressure latch.Some covers will pull off easily, others mayneed to be released using a screwdriver.InstallCancelTake a photo of your wiringThrow away any jumper wiresThrow Away Any Jumper WiresSensi has a jumper wire built into it, and you willnot need any jumper wires from your old unit.Optional: take a photo of your existingthermostat wiring in case you need it forreference later. The photo will be saved toyour camera roll.PreviousChoose Wire TerminalsChoose the terminal labels that have wires attachedto them on your old thermostat here. The app willtell you if you have a valid configuration.If you are getting an invalid configuration message you can learnmore about compatibility at Touch requires a c-wire.System TypeIf you see a jumper wire, remove it. Your newthermostat has the jumper wire built in.Leave all other wires connected to thethermostat.Video: What to do if you have a jumper ncelPick terminals with wires attachedSelect furnace typeGasRWYGRHW1Y1OElectricBoiler / RadiantRCW/EY2BCW2LO/BXEAUXOtherSelect what type of system you have.Video: How do I Pick my wires?PreviousSensi Touch Smart Thermostat INSTALLATION GUIDENextVideo: What is my furnace type?PreviousNext5

INSTALLING THE SENSI THERMOSTATLabel Your WiresUsing the provided wire label stickers, label yourwires by removing one wire at a time.9:419:41InstallCancelLabel your wiresLabel WiresAfter all of your wires are labeled, remove theold thermostat base from the wall.Disconnect wires and remove baseOld ThermostatO/BDisconnect Wiresand Remove BaseOW/EWRHRYYCCUsing the provided wire label stickers,carefully label your wires by removing onewire at a time from the terminal and applyinga label sticker.Your labels may not match - that’s ok! For example, youmay have a W wire, you can apply the W/E sticker.Secure by wrapping the wires around apencil to keep them from falling into the wall.Video: what if my labels don’t match?Install Sensi BaseUse the provided mounting screws andsecure the Sensi base to the wall.InstallCancelPreviousVideo: How to remove old thermostat ncelInstall new thermostat baseConnect the wiresConnect the WiresO/BW/EYCRHOnce the Sensi base is mounted and secured on the wall, insertthe wires into the terminals. Simply push the wires into theterminal slots. Use a screwdriver to secure each wire in placeMount the thermostat using the suppliedscrews, drilling holes and inserting wallanchors, if necessary.Attach CoverPush the front display onto the thermostat base. If youused the “Backlight” feature, please make sure the switchis turned “Off” so you can control it from the display.Press the paddle underneath the terminalcorresponding to the wire label sticker andinsert the wire into the opening.Video: How to install new thermostat basePreviousVideo: How to connect the ancelTurn off light and attach coverTurn on powerTurn off the terminal light on the thermostatbase and securely attach to the thermostatcover.Turn the power to the heating or airconditioning system back onTurn On PowerTurn the power to your system back on.PreviousSensi Touch Smart Thermostat INSTALLATION GUIDENextPreviousNext6

INSTALLING THE SENSI THERMOSTATConnecting to Wi-FiThis portion of the installation guide covers how to connect yourthermostat to Wi-Fi. If you chose the first option, “No, it needs tobe installed,” the app will provide instructions for installing andwiring your thermostat before you connect to Wi-Fi. If you hadyour Sensi thermostat installed by a professional or if you havealready installed and wired your Sensi thermostat yourself, buthave not yet connected to WiFi, choose “Yes, it is on the wall.” Theapp will jump right into connecting your thermostat to Wi-Fi.BROADCAST SENSI NETWORKOn the thermostat, press Menu, and then Wi-Fi. Depending the Sensiversion you may see “Set up new network” or you may see two icons.If you see two icons, you’ll have the option to bypass HomeKit setup.CONNECT YOUR SENSI THERMOSTAT TO YOURWI-FI NETWORK WITH THE SENSI APPFollow the step-by-step instructions in the Sensi app. TheWi-Fi connection process will be slightly different basedon your device’s operating system (iOS/Android), Sensi appversion, and the version of Sensi thermostat that you have.9:419:41ConnectCancelWi-Fi SetupIdentify Sensi ModelSet up new networkDisplay only shows “Set up new network”Display shows two setup optionsOn the thermostat, tap the Menu Button inthe top-left corner. On the Menu Optionsscreen, Press elRegisterCancelName your thermostatRegister ThermostatPick from the suggested names below or adda custom namer your Sensi Thermostat.We can fill in some of the registration fieldsfor you - tap “Locate Me” below and we’lltake it from there!SELECT A NAMECustomLocate MeNo thanks, I’ll fill them in manuallyNextSensi Touch Smart Thermostat INSTALLATION GUIDEConnectCancelPreviousNext7

INSTALLING THE SENSI THERMOSTATName ThermostatYou can select a name or choose a custom namefor your thermostat. Press “Next” to continue.6:10RegisterContractor InformationTelephone NumberIf you have a contractor, please enter thephone number. This step is optional.Register thermostatAfter successfully connecting Sensi, the app will prompt youto register the thermostat. You can either choose the “LocateMe” option or fill in your street address, city, state, zip code,country and time zone manually. Press “Next” to continue.Contractor InformationIf a contractor professionally installed your thermostat,and registered as a Sensi partner, they have the option toinput their phone number here. If there is not a registerednumber available, simply hit “Next” to continue.PreviousNext9:41CancelRegisterSetup CompleteStart Using SensiCongratulations on successfully installing Sensi. Press “StartUsing Sensi” to open the main screen of the app.You’ve successfully set up and registeredyour Sensi Thermostat!Start Using Sensi ThermostatSensi Touch Smart Thermostat INSTALLATION GUIDE8

TROUBLESHOOTINGConnecting toWi-Fi TroubleshootingIf you’re having trouble connecting to Wi-Fi, here are some tips to try: Make sure the Sensi app is up-to-date and running thelatest version available in your app store. Reboot your smart phone. Reboot your router by unplugging it from the wall for afew minutes and then plugging it back in. If you’re on an iPhone, make sure Keychain is On, andHome Data is allowed for the Sensi app. If you’re on an Android, go into your phone’s Advanced Wi-Fi Settings andturn off the “Switch to mobile data” feature. (Depending on your Android, itmay be called “Smart Network Switch” or “Avoid poor connections.”)– It may be easier to just turn “Mobile Data” off completely forsetup. You can find this in your Connection settings. Try another smart phone or tablet. Simply download the Sensi app and sign into theapp using the email address and password you used when you created your account.Reconnecting to Wi-FiIf you replaced your router or changed your Wi-Fi network password,you will need to reconnect your thermostat to Wi-Fi. This isdifferent depending on what smart device you are using. Pleasesee our support article for more information on how to ting-sensi-thermostat-to-wifiSensi Touch Smart Thermostat INSTALLATION GUIDE9

TROUBLESHOOTINGBlank or flashing displayIf you installed a Sensi Touch Smart Thermostat, butthe touchscreen is still blank or only flashes aftercompleting all the steps in the Sensi app, then mostlikely the thermostat is not receiving enough powerfrom your system to turn on or stay on continuously.Sensi Touch requires a “C” wire to power the thermostat.Sensi does have a battery powered light in the sub-base forinstallation, but that light will only last for about an hour,and is not an indicator that there is power to the thermostat.I DON’T HAVE A WIRE IN THE “C” TERMINAL.Sensi requires a “C” wire. If you don’t have a wire inthe “C” terminal, check out our “C” wire videos for DIYinstallation at you are installing Sensi to a heat only system, you maybe able to install an external transformer. Learn moreabout that option by searching “external transformer” onour support site at HAVE A WIRE IN THE “C” TERMINAL.1. Did you DIY this “C” wire connection? If so, make sure that this wireis connected to “C” terminal at the thermostat and at your system.1. Go down to your air handler, reveal your system’s control board,and trace the “C” wire at the thermostat to ensure that it issecurely connected to the “C” terminal at the system controlboard. If you haven’t already, it may help to watch one ofthe “C” wire videos to see how to access the control board.2.Gently tug the “C” wire at the sys