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How to Reset a Sensi Thermostat: Steps for Each Model

Sensi thermostat reset steps vary by model. Find yours first, use its factory-reset controls, then reconnect Wi-Fi—or power-cycle the thermostat if you only need a restart.
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To reset a Sensi thermostat, first identify its model: Sensi Smart and Sensi Lite use button combinations, while Sensi Touch and Touch 2 use a Factory Reset option in their menus. Sensi recommends a reset when support instructions advise one. If you only need to restart an unresponsive thermostat, try a power cycle instead; it is a different action and does not use the factory-reset controls.

Find your Sensi thermostat model

The reset steps depend on the model. Pull the thermostat cover straight toward you and turn it over to find the model-number sticker on the back. Sensi says the sticker is present on all its models. The label also includes a MAC ID and Sensi Security Code, which may be useful during Wi-Fi setup or an account transfer. See Sensi’s instructions for finding the model number.

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Factory-reset the thermostat

Use the instructions for the model shown on the label. Avoid substituting battery removal for a factory reset: the documented factory-reset controls differ between non-touchscreen and touchscreen models.

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Sensi Smart

  1. At the thermostat, press and hold Up, Down, and Fan at the same time.
  2. Release the buttons when the display flashes and reboots.

Sensi Lite

  1. Press and hold Up, Down, and the three-dot Menu button together for at least one second.
  2. Release when the display resets.

Sensi Touch

  1. Tap Menu.
  2. Tap About Thermostat.
  3. Tap Factory Reset.

Sensi Touch 2

  1. Tap the menu icon.
  2. Tap About Thermostat.
  3. Tap Factory Reset.

These are the model-specific steps in Sensi’s reset instructions. The available Touch manual documents that its reset restores settings to defaults except HVAC Equipment settings and clears HomeKit pairing; do not assume the same reset scope for other models. Consult the relevant Sensi thermostat manual for model-specific details.

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Sensi Room Sensor

The Room Sensor is a separate device, not a thermostat. Remove its plastic back piece, then press and hold its Reset button for five seconds, following Sensi’s reset instructions.

Reconnect Wi-Fi and allow recalibration

After resetting a thermostat, reconnect it to Wi-Fi using the instructions for that model. Sensi says room-temperature recalibration can take 30–60 minutes after a reset. If Wi-Fi will not reconnect, follow the model-specific steps in the Sensi reset guide.

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Sensi Lite Smart Thermostat, WiFi, Alexa, DIY, Energy Star Certified, ST25
  • EASY DIY INSTALLATION: Do it yourself fast with a built-in level and simple step-by-step instructions. Works with the HVAC equipment found in most homes
  • COMMON WIRE REQUIREMENTS: Common wire(C-Wire) required for heat pump and heat/cool only systems. C-wire not required on most systems
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  • CONTROL FROM ANYWHERE: The top-rated mobile app for Android and iOS devices makes it easy to control your comfort from a smartphone or tablet

Try a power cycle if you only need a restart

A power cycle disconnects and restores power; it is not the factory reset described above. Sensi documents these restart steps for an unresponsive thermostat:

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Sensi Smart and Sensi Lite

  1. Remove the thermostat faceplate from the wall.
  2. Take out the batteries and wait until the display goes blank.
  3. Reinsert the batteries and reinstall the faceplate.

Sensi Touch and Touch 2

  1. Remove the thermostat from its sub-base to disconnect power.
  2. Reinstall it.

If buttons or the touchscreen do not respond, check whether keypad lockout is enabled. See Sensi’s instructions for a display or button problem.

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If the reset does not solve the problem

Wi-Fi still will not connect

On Sensi Smart, low battery can interfere with Wi-Fi. Sensi specifies two fresh AA alkaline batteries for that model. For Sensi Lite, it specifies two fresh AAA alkaline batteries. These recommendations apply to those battery-powered models, not every Sensi thermostat. See Sensi’s no-Wi-Fi-icon troubleshooting steps.

Heating or cooling still does not run

A reset cannot correct a power, wiring, HVAC, or low-battery fault. Check that HVAC power is on, and verify the wiring and system configuration. If the equipment itself may need service, contact an HVAC professional; Sensi recommends professional help when troubleshooting indicates an equipment issue. See Sensi’s heating troubleshooting guide.

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Sensi Lite Smart Thermostat, WiFi, DIY, Alexa, Energy Star Certified, ST25W
  • EASY DIY INSTALLATION: Do it yourself fast with a built-in level and simple step-by-step instructions. Works with the HVAC equipment found in most homes
  • COMMON WIRE REQUIREMENTS: Common wire(C-Wire) required for heat pump and heat/cool only systems. C-wire not required on most systems
  • SAVE ABOUT 23% ON HVAC ENERGY*: ENERGY STAR-certified and packed with features that help you save money, including flexible scheduling, geofencing, remote access and usage reports
  • PRIVACY PROTECTION*: Sensi won’t sell your personal information to third parties or leverage your thermostat activity data for targeting or advertising purposes
  • CONTROL FROM ANYWHERE: The top-rated mobile app for Android and iOS devices makes it easy to control your comfort from a smartphone or tablet
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Sensi Touch Smart Thermostat by Emerson with Touchscreen Color Display, Programmable, Wi-Fi, Mobile App, Easy DIY, Data Privacy, Works with Alexa, Energy Star Certified, ST75 - Black, C-Wire Required
  • PRIVACY PROTECTION: Sensi won’t sell your personal information to third parties
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.

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