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Installation is complete but the screen has circles lighting up around it. What
should be done?
When power is first restored to the thermostat, it takes up to three minutes to start up.
The display will light up in circles as it advances through its initial power up. Then, it will
display a unique network name, such as
Stat 03
. When the name is displayed, touch “OK”
to begin thermostat configuration.
Why does the screen on the thermostat go blank?
When someone is not near the thermostat, the display goes to sleep to conserve energy.
The thermostat can still be controlled through the Honeywell Home app. A motion
detector on the thermostat senses when someone approaches and wakes it up.
A change was made on the Honeywell Home app but it has not shown up on the
thermostat.
There may be a short delay after making temperature and setting changes in
the app.
There is a message that says Thermostat Power Lost. What does that mean?
This is an indication that power to the thermostat has been interrupted. Confirm that the
heating and cooling system is still powered.
If everything is powered as expected but the thermostat is still offline, please contact the
Technical Support team for assistance at 1-800-633-3991.
There is a message that says Internet Connection Lost. What does that mean?
The thermostat is connected to the router, but the router is not connected to
the Internet.
Troubleshooting
