by Designed by the pros for the pros
There are a lot of choices when it comes to buying a thermostat, but only one combines 125 years of experience and the latest connected home technology to empower your customers to take control of their comfort from anywhere. We proudly connect you to a professional-grade thermostat that you can offer your customers with confidence and that will keep you connected with them even after the initial install.
Sensi partner program
Always be the Contractor-On-Call with your customers.
The Sensi app saves your contact information so when your customer needs service; you’re just a tap away. Register at www.sensiregistration.com.
Need help?
Visit sensicomfort.com/support for around-the-clock access to support articles, instructional downloads and comprehensive support videos. Our highly-trained Sensi Support Team is available seven days a week.
Call 1.888.605.7131
support@sensicomfort.com
READ ALSO: SENSI PROFESSIONAL CONTRACTOR INSTALLATION GUIDE
Easy to install and connect
Sensi is designed to install like a standard thermostat. It gives you the flexibility to connect to Wi-Fi at installation or let your customer connect it later using the Sensi app.
MOBILE DEVICE COMPATIBILITY
| Operating system compatibility |
| Ios yes |
| Android yes |
| Amazon fire yes |
SMART HOME PLATFORM COMPATIBILITY
| Operating system compatibility |
| Wink yes |
| Amazon echo yes |
| Apple home kit yes but requires a common wire (c-wire) |
HVAC SYSTEM COMPATIBILITY
| SYSTEM TYPE | COMPATIBILITY | MODIFICATIONS |
| Conventional heating and cooling . Gas furnace . Air conditioner . Electric furnace . Boiler | Yes | None |
| Heat only . Gas furnace . Electric furnace . Boiler | Yes | Requires a common wire (c-wire) |
| Cool only . Air conditioner | Yes | Requires a common wire (c-wire) |
| Heat pump | Yes | Requires a common wire (c-wire) |
| Communicating proprietary systems | No | Needs standard HVAC wiring |
| Line voltage | No | Requires low voltage(20-30VAC) |
| Millivolt systems | No | Requires 20-30VAC |
What’s in the box?
- Sensi Thermostat
- Screws and Anchors
- Wire Labels
- 2 AA Batteries
- Sensi Security Code (found on the back of the Welcome Guide)
Items needed for Wi-Fi connection:
- The homeowners compatible iOS or Android
- Device with the Sensi app installed and registered
- Your customer’s Wi-Fi network name (SSID) and password
QUICK TIP: Ask the homeowner to download the Sensi app and gather their Wi-Fi information while you are installing the thermostat.
Installation
- Install Sensi thermostat, referring to these terminal definitions, cross references and wiring diagrams as needed:
| OLD THERMOSTAT | SENSI THERMOSTAT | CONVENTIONAL SYSTEM | HEAT PUMP SYSTEM |
| RH | RH* | Power for heating, 24V | |
| RC, R | RC* | Power for cooling, 24V | |
| C, X, B** | C | Common wire, 24V | |
| Y,Y1 | Y | 1st stage cool | 1st outdoor stage heat |
| Y2 | Y2 | 2nd stage cool | 2nd outdoor stage heat and cool |
| W, W1, W/E, Aux/E, E stage heat | W/E | 1st indoor stage heat | 1st stage axillary/ emergency heat |
| W2** | W2 | 2nd indoor stage heat | 2nd stage axillary/ emergency heat |
| G | G | Indoor blower [fan ] | |
| O, B,** O/B | O/B | Changeover (reversing valve) connection for heat pump or zone panel systems | |
| L | L | No function | L terminal connection |
* Two transformer systems (separate RC and RH wires), clip internal jumper located on back of Sensi above battery compartment.
** Label “B” as “C” only if the old thermostat also had a wire in “O” If there is no wire on “O”-label the wire “B”
*** On Heat Pump system with separate W2 and E wires, label both wires W/E (2 wires in one terminal)
SINGLE STAGE MULTI-STAGE SYSTEM NO HEAT PUMP WITH TWO TRANSFORMERS
**Common connection required on He%- only, cool-only, or Heat Pump system
2. After installation, configure the thermostat to the appropriate system type. Press “Menu” on the thermostat and refer to these menu options as needed:
CONFIGURATION MENU ITEMS REFERENCE
| No | Menu item | default | Options |
| 1 | Wireless set yup Connect thermostat to WI- fi network | – | Connect |
| 2 | Fahrenheit or Celsius | F | F C |
| 3 | Outdoor equipment configurationCooling or heat pumps | AC2 | AC1- Conventional cooling 1 [single stage] HP1 – heat pump 1[single stage] AC2- conventional cooling 2[two stage] HP 2 –[heat pump 2] two stage ] AC01- no cooling |
| 4 | Indoor equipment configurationFor gas or electric heat | EL2 | GA 1 [single stage] EL1- electric 1[single stage] GA2 [ Two stage] EL2 – electric 2 [two stage] |
| 5 | Reversing valve position selects O or B setting for heat pumps only | O | O B |
| 6 | Wireless radioTurns Wi-Fi radio on/off | ON | On Off |
3. Once the thermostat is installed and properly configured, test the equipment by following these steps:
- Turn on power to the system.
- Fan Operation
- If your system does not have a “G” terminal connection, skip to “Heating System” below.
- Press the “Fan” button on the thermostat and select the “On” position. The blower should begin to operate.
- Press the “Mode” button to turn off the system. Then press the “Fan” button on the thermostat and select the “Auto” position. The blower should stop immediately.
- Heating System
- Press the “Mode” button on the thermostat and select the “Heat” position.
- Press the up arrow on the thermostat and adjust the setting to 1° above the current room temperature. The heating system should begin to operate and the thermostat will indicate “Heating” of “Heating Auxiliary” on the screen.
- For heat pumps with auxiliary, press the up arrow on the thermostat and adjust the setting to 3° above the current room temperature. The auxiliary heat should begin to operate and the thermostat will indicate “Heating Auxiliary” on the screen.
- Press the down arrow on the thermostat and adjust the setting to 1° below the current room temperature. The heating system should stop operating and “Heating” or “Heating Auxiliary” will disappear from the screen.
- Auxiliary System (only for heat pumps with auxiliary)
- Press the “Mode” button on the thermostat and select the “Aux” position. This bypasses the heat pump and runs auxiliary-only heat.
- Press the up arrow on the thermostat and adjust the setting to 1° above the current room temperature. The auxiliary heating system should begin to operate and the thermostat will indicate “Heating Auxiliary” on the screen.
- Press the down arrow on the thermostat and adjust the setting to 1° below the current room temperature. The auxiliary heating system should stop operating and “Heating Auxiliary” will disappear from the screen.
- Cooling System
- Press the “Mode” button on the thermostat and select the “Cool” position.
- Press the down arrow and adjust the setting to 1° below the current room temperature. The blower should come on immediately on high speed, followed by cold air circulation. The thermostat will indicate “Cooling” on the screen. Note that there can be up to a5 minute delay for this process. This is indicated by a flashing set point temperature.
- Press the up arrow and adjust the setting to 1° above the current room temperature. The cooling system should stop operating and “Cooling” will disappear from the screen.
- If you encounter any issues while testing the equipment, refer to the troubleshooting actions on page 13.
Troubleshooting
| SYMPTOM | POSSIBLE CAUSE | CORRECTIVE ACTION |
| No Heat/ No Cool/ No Fan (common problem) | 1. Blown fuse or tripped circuit breaker 2. Furnace power switch to OFF 3. Furnace blower compartment door panel loose 4. Loose connection to thermostat or system | 1. Replace fuse or reset breaker 2. Turn switch to ON 3. Replace door panel in proper position to engage safety interlock or door switch 4. Tighten connections |
| No Heat | 1. Thermostat not set to Heat 2. Loose connection to thermostat or system 3. Heating system requires service or thermostat requires replacement | 1. Set thermostat to Heat. 2. Verify thermostat and system wires are securely attached. 3. Diagnostic: Set Mode to Heat and raise the setpoint above room temperature. Within five minutes the thermostat should make a soft click sound and “Heating” should appear on display. This sound indicates the thermostat is operating properly. If the thermostat does not click, try resetting the thermostat. If the thermostat does not click after being reset, contact your heating and cooling service person or place of purchase for a replacement. If the thermostat clicks, verify the heating system is operating correctly. |
| No cool | 1.Thermostat not set to cool 2. Loose connection to thermostat or system 3. Cooling system requires service or thermostat requires replacement | 1. Set thermostat to Heat. 2. Verify thermostat and system wires are securely attached. 3. Diagnostic: set mode to col and lower set point below the room temperature. same procedures as diagnostic for no heat condition except set the thermostat to cool And lower the set point below the room temperature. there may be up to a five minutes delay before the thermostat clicks in cooling if the AC protection feature is on. |
| Heat cool or fans runs constantly | Possible short in wiring , thermostat, heat, cool or fan system | Check each wire to verify they are not shorted or touching other wires. Try resetting the thermostat |
| Thermostat display and thermometer disagree | Thermostat display requires adjustment | Display can be adjusted +/_ 5 degrees using the temperature offset in the sensi app |
| Furnace [air conditioner] cycles too fast or slow | The location of the thermostat and the size of the heating system may be influencing the cycle rate | Digital thermostats provide precise control and cycle faster than older mechanical models. The system turns on and off more frequently, but runs for a shorter time. If you would liketo increase cycle time, choose Slow for the Cycle Rate in the Sensi app |
| Call for service appears on the screen | 1. Heating or cooling system is not able to heat col the space to within 5 degrees of the set point within 2 hours 3. If –“ is displayed for the room temperature a replacement of the thermostat is needed 4. None of the buttons operate on the thermostat | 1. See corrective action for “No Heat” 2. See corrective action for “No Cool” 3. Replace thermostat 4. Make sure keypad lockout is not turned on. If it’s OFF, try resetting the thermostat. Reset: Turn the power to your system off, wait 5 seconds and turn it back on |
Connecting Sensi to WI-FI
1. Ask the homeowner to download the free Sensi app onto their iOS or Android device.
Download on the App Store
GET IT ON Google Play
2. Ask the homeowner to follow the prompts to create an account.
3. Once the homeowner has logged in, ask to use their device to connect the thermostat to the Wi-Fi.
QUICK TIP: You must have your customer’s Wi-Fi Network (SSID) and Password, along with the Sensi Security Code card to complete the wireless setup.
4. Select “Connect Thermostat to Wi- Fi” and follow the in-app prompts to complete the connection steps.
5. Once the thermostat is connected to Wi-Fi, enter your registered phone number by selecting “Contractor” from the drop down menu.
READ ALSO: Bosch Connected Control (BCC50 Wi-Fi Thermostat) Installation Guide and User Manual
Warnings
INSTALLER INFORMATION
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL INJURY ANB/OR PROPERTY DAMAGE.
WARNING: OUT OF PHASE TRANSFORMERS
On two transformer systems, the transformers MUST be in phase. Measure the voltage across RC and RH. If more than 12 Volts AC is present between RC and RH, then the transformers are NOT in phase.
To correct this condition, reverse the secondary low voltage connections at either the Heating or cooling transformer.
CAUTION
To prevent electrical shock and/ or equipment damage, disconnect electric power to system at main circuit breaker box until installation is complete.
WARNING
FOR CALIFORNIA RESIDENTS:
WARNING:
This product contains a chemical known to the state of California to cause cancer and birth defects and other reproductive harm.
Warning
VOLTAGE REQUIREMENTS
Do not use on circuits exceeding specified voltage. Higher voltage will damage control and could cause shock or fire hazard.
Thermostat installation and all components of the control system shall conform to Class II circuits per the NEC code.
CAUTION
CAUTION: E5 Alert
If “Call For Service” is displayed on your Sensi thermostat, and E4 or E5 appears where the room temperature should be displayed or the backlight is flashing, please call our support team immediately at 888.605.7131
ATTENTION: MERCURY NOTICE
This product does not contain mercury.
However, this product may replace a product that contains mercury.
Mercury and products containing mercury must not be discarded in household trash. Refer to thermostat- recycle.org for location to send product containing mercury.
For Your Customer
MAKE SURE TO LEAVE THE SENSI WELCOME GUIDE FOR YOUR CUSTOMER.
It provides helpful instructions and information on the following:
- Includes their Sensi Security Code for connecting to Wi-Fi
- How to connect their Sensi thermostat to Wi-Fi (if this has not already been completed) or connect additional devices
- Key features of the thermostat and the app and how they work
- Customer Support
You can download the PdF version of Sensi WI -Fi Thermostat Pro Installation Guide here.