FAQ's
WiFi connection questions
See WiFi Setup and Troubleshooting.
Software and security questions
Q: How can I be sure my thermostat is running the most up-to-date firmware?
A: When your thermostat is connected to WiFi, it will automatically receive over-the-air firmware updates from the First Alert App. These firmware updates contain things such as new features as well as security upgrades. Keep your thermostat connected to WiFi to ensure it receives these updates.
Q: How can I prevent a cybercriminal from making unauthorized changes to my thermostat?
A: If a cybercriminal gains access to your First Alert app, they can tamper with the settings of the products on that app, or remove those products from your account and add them to a different account. Make sure you select a password that meets the recommendations for complexity and save it in a secure location that others cannot access.
Other questions
Q: How can I remove the ElitePRO™ Series Thermostat from my WiFi network and App?
A: If you want to replace your ElitePRO™ Series Thermostat, or if you’re moving out of your home and leaving the thermostat behind, you’ll first want to clear out the personal settings that are stored on the thermostat. (Even when disconnected from power, the thermostat will keep your settings and home router information in memory.) We recommend resetting the thermostat’s WiFi and Matter® settings (if previously connected).
Q: Is there a motion sensor in the thermostat?
A: The ElitePRO S1000, S1100, & S12000 Series Thermostats have an on-board motion sensor in the thermostat. Additionally up to 20
Q: What happens if “Active rooms” is used and no motion is detected in any of the rooms with sensors?
A: If the thermostat is set to control by active rooms, and no motion is detected, the sensor in the thermostat is used and the remote sensors are excluded. Most people schedule the sleep period to use “Selected sensors” rather than “active sensors” and choose the bedrooms for the sleep schedule.
The ElitePRO™ Series Thermostats have a setting for "Fallback sensor" which would be used rather than the thermostat if selected.
Q: When using active rooms, how long are those rooms considered "Active" after motion has last been detected?
A: The sensor ahas an occupancy algorithm based on how many motion events it sees within a certain timeframe. This was set up so that if someone briefly walks through a room, the sensor will tell the thermostat that the room is “occupied” for 10 minutes. If someone is in a room longer, then the timeout will be increased automatically.
Sensors communicate directly with the thermostat via Honeywell Home Redlink 3.0 technology. After sensing motion, the communication should take less than 3 seconds to assign the room priority, depending on battery and signal strength.
Q: How do the wireless indoor sensors detects motion.
A: The sensors use a Passive Infrared Sensor (PIR) detector.
Q: How does motion-based priority work with multiple people in the house?
A: If the thermostat’s priority is set to ‘Active Rooms’, then any room that detects motion will become prioritized. The average of those rooms’ temperatures will be monitored so that the thermostat can adjust to your preferred temperature setpoint. If one of the sensors no longer detects people in that room, that sensor will adjust after a period of time, using the algorithm based on motion events that it sees within a certain time frame.
Q: What’s the range of detection on the motion sensor?
A: There are many factors that can affect this (height, body size, layers of clothing, temperature of clothing, angle, etc.). The typical range of our sensor is up to 20 feet.
Q: Is the ElitePRO™ Series Thermostat UL and ULC listed or CSA listed?
A: UL, ULC, & CSA ratings are not required for low-voltage rated controls such as the ElitePRO™ Series Thermostats or EIM. UL rating is required for devices supplied by 50 volts or higher.
Q: Which Redlink Products do ElitePRO™ Series Thermostats work with? (Redlink compability)
A: ElitePRO S1000, S1100, and S1200 Redlink thermostats work with Redlink 3.0 accessories.
See Redlink™ accessories for more details.
Q: What does "Warming Sen" mean on the thermostat display?
A: This message indicates that the thermostat is warming up its Indoor Air Quality (IAQ) sensor. It usually appears briefly after the thermostat is powered on.
Q: What should I do if my thermostat indicates poor indoor air quality?
A: See Indoor Air Quality Monitoring (S1100 and S1200 only) for solutions.
Q: What does it mean when my thermostat shows “Calculating” in the Indoor Air Quality screen?
A: The thermostat will display “calculating” after initial installation or after a power-up to ensure the sensors are getting an accurate sampling of the air before showing the VOCs or estimated Carbon Dioxide. This may take several minutes.
Q: How can I keep the display from lighting up?
A: There are several options that control the display brightness and when the screen lights up. In some cases, you may not want the display to light up when motion is detected (for example, if thermostat is installed in an infant’s bedroom). Menu > Preferences > Display has options including:
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Idle screen behavior: Determines whether the display transitions to the active screen when motion is detected or when the screen is tapped.
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Screen brightness: Allows customer to adjust the brightness setting for both active and idle screens.
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App change behavior: Lets you choose whether the display transitions to the active screen when a change is made through the app, or remains on the idle screen.
Q: What do the A2L regulations require of furnaces and air handlers?
A: For information about A2L regulations under the American Innovation and Manufacturing Act of 2020, including refrigerant leak detection requirements and how they relate to Honeywell Home thermostats and zone panels. See the document available at: https://digitalassets.resideo.com/damroot/Original/10017/33-00723.pdf.