Honeywell TH6320WF2003 Lyric T6 Pro Wi-Fi Programmable Thermostat User Guide
Troubleshooting
If the thermostat screen is blank:
• Check the circuit breaker or fuse that’s connected to your heating or cooling
system and turn it on if it’s switched off.
• Make sure the power switch at the heating or cooling system is on.
• Make sure the furnace door is closed securely.
If the screen is difficult to read:
• Increase screen brightness (see page 22 for instructions).
If the heating or cooling system isn’t responding:
• Touch Mode on the thermostat home screen and set the system to Heat. Make
sure the temperature set point (the smaller of the two numbers) is higher than the
indoor temperature (the large number in the center of the screen).
• Touch Mode on the thermostat home screen and set the system to Cool. Make sure
the temperature set point (the smaller of the two numbers) is lower than the indoor
temperature (the large number in the center of the screen).
• Check the circuit breaker or fuse that’s connected to your heating or cooling
system and turn it on if it’s switched off.
• Make sure the power switch at the heating or cooling system is on.
• Make sure the furnace door is closed securely.
• After making these changes, wait 5 minutes for the system to respond.
If the temperature setting doesn’t change:
• Make sure the heating and cooling set points are within the operating range.
–
–
Heat: 40 ºF to 90 ºF (4.5 ºC to 32.0 ºC)
Cool: 50 ºF to 99 ºF (10.0 ºC to 37.0 ºC)
If Cool On or Heat On is flashing:
• The compressor protection feature is engaged. Wait a few minutes for the system
to safely restart to avoid damaging the compressor. See page 9 for more
information.
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Frequently asked questions (FAQs)
WiFi connection questions
Q: Will the thermostat still work if the WiFi connection is lost?
A: Yes, you can still manually adjust the temperature at the thermostat. However, some features
such as location-based temperature control (geofence technology) can only be managed
through the Resideo App and will not function without a WiFi connection. The thermostat will
automatically reconnect to WiFi once the network is restored.
Q: Why is the thermostat not finding my WiFi network?
A: The T6 Pro Smart thermostat operates in the 2.4GHz range. Smartphones operate in both
the 2.4 and 5.0 GHz ranges, so your smartphone may “see” your WiFi network when your
thermostat does not. Most WiFi routers will broadcast two networks: 2.4 GHz and 5.0 GHz. If
you have an option, make sure your smartphone is connected to the 2.4 GHz network.
Q: Is there a way to extend the strength of my WiFi signal?
A: The range (distance) of your WiFi signal is determined by your router. Try moving your router
closer to the location of the thermostat, or use a router with a stronger signal range.
Q: There’s an alert that says “WiFi Signal Lost” – what should I do?
A: Wait 5 minutes for the thermostat to reconnect or select an alternate network (if you have
one) in the Resideo App configuration menu. If the thermostat isn’t able to reconnect, you’ll
need to troubleshoot the router to determine the cause.
Q: Why is there an offline symbol (WiFi icon with a strikethrough) in the upper-right corner
of the thermostat screen?
A: The thermostat has lost its connection to the WiFi network. First, make sure your WiFi router
is plugged in and broadcasting a signal. If it is, try resetting the router (consult the router’s
manual for instructions). When the WiFi network has been restored, the thermostat will
automatically reconnect.
Home account and app questions
Q: Why haven’t I received an account activation email?
A: If you haven’t received an activation email after 5 minutes, check your Spam folder and look
for an email from Connected-Home@alarmnet.com. If you don’t see it, tap Resend to have the
activation email resent. If you still don’t receive it, please contact the Technical Support team
at 1-800-633-3991.
Q: Can I set up my thermostat with multiple users?
A: Yes. To add users, log into the Resideo App and tap the menu icon in the upper-left corner.
Select Add Users, tap add user and type in the email addresses of the people you’d like
to invite. If they already have a Home account set up, the thermostat and its location will
automatically be added to their account. If they don’t have an account, they’ll receive an
email prompting them to download the Resideo App and create a new account.
Q: Can I set up location-based temperature control with multiple users?
A: Yes. Location-based temperature control (geofence technology) will activate based on the
last person who leaves and the first person to return. Each user will need to create their own
Home account with a login ID and password. Two users should not share the same account.
Each user will then need to enable location-based temperature control. See page 13 for
instructions.
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Q: Why doesn’t a change I made in the app show up on the thermostat?
A: There may be a short delay when you make temperature and settings changes in the Resideo
App. Wait a few minutes, and if you still don’t see your changes on the thermostat, make sure
the thermostat is still connected to WiFi and restart your Resideo App.
Alerts and maintenance notification questions
Q: What should I do when the alert symbol
appears on the thermostat home screen?
A: When you see the alert symbol on the thermostat screen, touch Menu and the ALERTS sub-
menu will appear. Touch Select to view alert information. Or, you can view alert information in
the Resideo App. See page 27 for a list of all alert codes, what they mean and the action
you should take.
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 Resideo. 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 WiFi router, they can tamper with a wide range of
online activities, including the settings on your connected devices. Make sure you change the
default password on your WiFi router, and when you select a new password, make sure it uses
multiple upper- and lower-case letters and special characters.
Thermostat removal questions
Q: How can I safely remove my thermostat?
A: Thermostat removal should ideally be handled by a trained professional as improper removal
can cause electrical shock and equipment damage. If you wish to remove the thermostat
yourself, be sure to turn off the circuit breaker that controls your heating or cooling
equipment before you disconnect any wires. If you don’t know which breaker controls your
equipment, you can shut off the main breaker.
Q: How can I uninstall my T6 Pro Smart thermostat?
A: If you want to replace your T6 Pro Smart 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
schedule, WiFi and HomeKit settings (if previously connected). See page 25 for more
information on reset options.
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| General | Details |
|---|---|
| Name | Honeywell TH6320WF2003 Lyric T6 Pro Wi-Fi Programmable Thermostat User Guide |
| Make | Honeywell |
| Language | English |
| Filetype | PDF (Download) |
| File size | 4.85 MB |
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