Honeywell Wi-Fi® Thermostat Owner's Manual

Troubleshooting

If the no-Wi-Fi indicator displays in place of the 
Wi-Fi strength indicator in the upper right hand 
corner of the home screen:

•  Check another device to be sure Wi-Fi is 

working in your home; if not, call your Internet 
Service Provider.

•  Move the router.

•  Restart the thermostat: remove it from the 

wallplate, wait 10 seconds, and snap it 
back onto the wallplate. Return to Step 1 of 
Connecting to your Wi-Fi network.

M33997

M33997

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During Wi-Fi Setup, the router 
lost power.

•  Ensure your router has power.
•  If trying to connect to a hidden or manually added network, 

confirm the router has power and is working.

'

Invalid Wi-Fi password. This 
code displays for 30 seconds, 
then the thermostat will re-enter 
Wi-Fi Setup mode.

•  Re-enter password for your home Wi-Fi network.
•  Repeat setup process and confirm your password for your home 

Wi-Fi network.

For certain problems, the thermostat screen will display 
a code that identifies the trouble. Initially, error codes are 
displayed alone in the time area of the screen; after a 
few minutes, the home screen is displayed and the code 
alternates with the time.

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Router is not issuing 
an IP address to the 
thermostat.

•  Wait for 30 minutes, connection can 

take several minutes.

•  If still no connection, remove 

thermostat from wallplate for 10 
seconds, then reconnect it (see page 
10).

•  Verify your router is correctly setup to 

automatically give IP addresses.

'

No internet connection. 
Thermostat cannot 
communicate to Total 
Connect Comfort.

•  Make sure the Internet cable is 

plugged in.

•  Reboot the router.

'

General error

Remove thermostat from wallplate for 
10 seconds, then reconnect it (see page 
10).