1. Product Overview
The Honeywell Home Lyric Round Wi-Fi Thermostat (Model: RCH9310WF) is designed to provide intelligent control over your home's heating and cooling system. It adapts to your lifestyle, offering remote control and automatic comfort management.

Figure 1: Front view of the Honeywell Lyric Round Wi-Fi Thermostat, displaying temperature settings.
Key features include:
- Smart Home Integration: Compatible with Apple HomeKit, Amazon Alexa, Samsung SmartThings, and IFTTT for voice control and integrated home automation.
- "Feels Like" Temperature: Accounts for both humidity and temperature to maintain optimal comfort levels.
- Adaptive Recovery: Learns the time required to reach desired temperatures, automatically switching between heating and cooling as needed.
- Smart Alerts: Provides push notifications for important events such as filter changes and extreme temperature conditions.
- Auto-Away Mode: Utilizes geofencing to adjust temperatures for energy savings when you are away from home.
- Energy Star Certified: Designed for energy efficiency.
2. Setup and Installation
Proper installation is crucial for the optimal performance of your Honeywell Lyric Round Wi-Fi Thermostat. This section guides you through identifying your system, removing your old thermostat, and installing the new device.
2.1 Identify Your Heating and Cooling System
Before installation, it is important to identify your home's heating and cooling system type to ensure compatibility. Thermostats are designed to work with specific system configurations.
Video 1: This video provides guidance on identifying your heating and cooling system type to ensure compatibility with the Lyric thermostat. It covers conventional forced air, heat pumps, radiant heating, electric baseboard, and various furnace types.
Common system types include:
- Conventional Forced Air: Systems with vents that blow out hot or cool air.
- Heat Pump: Provides both heating and cooling, may work with or without a backup heat source.
- Radiant Heating: Circulates water or steam through pipes or radiators from a boiler.
- Electric Baseboard: Features long metal units installed along the baseboard, typically running on 120V or 240V. The Lyric thermostat is generally not compatible with line voltage (110V or higher) systems.
- Fireplace, Floor, and Wall Furnaces: Typically gas heating sources.
2.2 Tools and Components
Ensure you have the following components and tools before beginning installation:
- Honeywell Lyric Round Wi-Fi Thermostat
- Wall plate
- Mounting screws
- Optional back plate (for covering marks from old thermostat)
- Phillips screwdriver
- Small pocket screwdriver or ballpoint pen (for releasing wires)
- Pencil (for marking)
2.3 Removing Your Old Thermostat
- Turn Off Power: For safety, switch off the power to your heating and cooling system at the circuit breaker box or system switch. Verify power is off by attempting to adjust the temperature on your old thermostat; if it responds, power is still on.
- Remove Front Panel: Carefully remove the front panel of your old thermostat. Some panels pop off, while others may be secured with screws. Keep the wall plate with wires attached.
- Check Voltage: Inspect the wires. If you have thick black wires connected with wire nuts, or if your thermostat runs on 110V or 240V (line voltage), the Lyric thermostat is not compatible.
- Record Wiring: Use the Lyric app to take a picture of your current wiring configuration. The app will guide you to select the terminals and confirm wire colors.
- Disconnect Wires: Gently press a ballpoint pen or small screwdriver into the terminal tab to release each wire.
- Remove Old Wall Plate: Once all wires are disconnected, remove the old wall plate from the wall. To prevent wires from falling back into the wall, wrap them around a pencil.
2.4 Installing Your New Lyric Thermostat
- Prepare Wall: If there are any paint gaps or wallpaper tears from the old thermostat, repair them now. Alternatively, use the optional back plate provided to cover the damage. Thread the wires through the back plate if using it.
- Bundle Wires: For easier installation, bundle the wires together before threading them through the new wall plate.
- Mount Wall Plate: Mount the new wall plate to the wall. Ensure it is level by checking the self-contained level bubble. Mark the screw holes with a pencil, then secure the wall plate using the provided self-anchoring screws.
- Connect Wires: Follow the directions in the Lyric app based on your unique wiring. The app will show you the terminals and wires you recorded. Push down gently on the terminal tabs with a ballpoint pen to insert or remove wires. Release the tab to lock each wire into place (wires should go in about a quarter of an inch).
- Adjust Slider Tabs: The app will instruct you on whether to push the slider tab on the left and right of the wall plate up or down, depending on your R wire configuration (one R wire or two R & RC wires).
- Attach Thermostat: After connecting your wiring, gently press the thermostat face onto the wall plate until it clicks into place.
- Restore Power: Turn the power back on to your heating and cooling system at the circuit breaker box or system switch. The thermostat will glow and pulse as it starts up (this may take up to 3 minutes).

Figure 2: A user gently pressing the Lyric thermostat onto its wall plate during installation.
2.5 Initial Configuration and Connection
Once powered on, the thermostat will display a unique network name (e.g., "Lyric Stat 03").
- Connect to Thermostat Network: On your smartphone or tablet, go to your Wi-Fi settings and connect to the unique Lyric network name displayed on the thermostat. If the network name is not visible, touch and hold the weather icon on the thermostat for 5 seconds to reset.
- Configure Equipment: Open the Lyric app. The app will ask a series of questions to determine your equipment configuration. Confirm or correct the selections as you proceed.
- Set Home/Away Temperatures: Select your preferred temperatures for when you are at home and when you are away. You can choose "Automatic" for Honeywell to optimize settings based on outside conditions, or "Manual" to set your own away temperatures.
- Connect to Home Wi-Fi: Within the Lyric app, select your home Wi-Fi network and enter the password if required. The thermostat will connect and sync with Honeywell (this may take several minutes).
- Personalize and Register: The final step is to personalize your thermostat by giving it a location name (e.g., "Home," "Cabin") and a specific name (e.g., "Upstairs," "Living Room"). Complete your profile by providing your address and time zone to register your thermostat with Honeywell.

Figure 3: Geofencing setup on the Lyric app, allowing the thermostat to adjust settings based on your location.
3. Operating Your Thermostat
The Honeywell Lyric Round Wi-Fi Thermostat offers intuitive control and smart features to manage your home's climate.
3.1 Daily Use and Modes
- Adjusting Temperature: Rotate the outer ring of the thermostat to adjust the desired temperature. The display will show the current and set temperatures.
- "Feels Like" Temperature: The thermostat considers both ambient temperature and humidity to provide a "Feels Like" temperature, ensuring your comfort is maintained more accurately.
- Adaptive Recovery: The thermostat learns how long it takes your system to reach your desired temperature settings. It will automatically start heating or cooling in advance to ensure the temperature is met at the scheduled time.
- Auto Changeover: The thermostat can automatically switch between heating and cooling modes to maintain your set temperature range.

Figure 4: The Lyric thermostat displays various information such as current mode, weather, and temperature settings.
3.2 Smart Features via Lyric App
- Geofencing (Auto-Away Mode): The Lyric app uses your smartphone's location to determine if you are home or away. It automatically adjusts the thermostat to save energy when you leave and returns to your preferred comfort settings when you approach home.
- Remote Control: Control your thermostat from anywhere using the Lyric app on your smartphone or tablet.
- Voice Control: Integrate with Amazon Alexa or Apple HomeKit (Siri) for convenient voice commands.
- Smart Alerts: Receive push notifications on your device for important events like filter change reminders or if your home's temperature reaches extreme levels.
4. Maintenance
Regular maintenance helps ensure the longevity and efficiency of your thermostat and HVAC system.
- Cleaning: Gently wipe the thermostat's screen and exterior with a soft, damp cloth. Avoid abrasive cleaners or solvents.
- Filter Change Reminders: Utilize the Smart Alerts feature in the Lyric app to receive notifications when it's time to change your HVAC system's air filter. Regularly changing filters improves air quality and system efficiency.
- Battery Check: Although primarily AC-powered, some models may use batteries for backup. Check the Lyric app or thermostat display for low battery indicators if applicable.
5. Troubleshooting
If you encounter issues with your Lyric thermostat, try the following troubleshooting steps:
- No Power/Display Off:
- Check your circuit breaker and ensure the power to your HVAC system is on.
- Verify the thermostat is securely attached to its wall plate.
- Wi-Fi Connectivity Issues:
- Ensure your home Wi-Fi network is active and broadcasting.
- Restart your Wi-Fi router.
- On the thermostat, touch and hold the weather icon for 5 seconds to reset its network connection, then attempt to reconnect via the Lyric app.
- Confirm your Wi-Fi router meets the minimum requirements (802.11 b/g/n).
- Incorrect Temperature Readings:
- Ensure the thermostat is not exposed to direct sunlight, drafts, or heat sources that could affect its sensor.
- System Not Responding (Heating/Cooling):
- Check the Lyric app for any error messages or system alerts.
- Verify that the thermostat is set to the correct mode (Heat, Cool, Auto).
- Ensure the power to your HVAC system is on at the circuit breaker.
- App Issues:
- Close and reopen the Lyric app.
- Ensure your smartphone or tablet operating system is up to date (Android 4.2+ or iOS 8.4+).
6. Specifications
| Feature | Detail |
|---|---|
| Brand | Honeywell |
| Model Name | RCH9310WF |
| Product Dimensions | 0.79"D x 3.78"W x 3.78"H |
| Controller Type | Amazon Alexa, Apple HomeKit, IFTTT, SmartThings |
| Special Feature | Auto-Away Mode |
| Connectivity Technology | Wi-Fi (802.11 b/g/n) |
| Power Source | AC/DC |
| Display Type | LED with Backlight |
| Mounting Type | Wall Mount |
| Certifications | FCC, UL, Energy Star Certified |
7. Warranty and Support
Warranty: This product comes with a 1-year limited warranty from the date of purchase.
For further assistance, technical support, or to view additional instructions and FAQs, please visit the official Honeywell support website or refer to the contact information provided with your product packaging.





