User Guide
27
The T6 Pro Smart thermostat comes with a set of Smart Alerts that help keep your
heating and cooling system running correctly and efficiently. You’ll get reminders
when it’s time to change the filter, for example, and notifications in the event of
extreme indoor temperatures.
Non-critical alerts and maintenance reminders can be snoozed for up to 7 days and/
or dismissed. Some critical alerts cannot be snoozed or dismissed as your heating or
cooling system may require service.
To turn off/on alerts and notifications in the Honeywell Home app:
1 Log into the app and select your thermostat.
2 Tap the settings button
at the top-right, then tap Manage Alerts to set your
preferences and manage alerts.
Note: To turn off/on alerts and notifications on the thermostat, contact your heating
or cooling professional.
When there’s an active alert or maintenance reminder, you’ll see the alert symbol
on the thermostat home screen. To see alert information, follow the steps below.
1 Touch Menu on the thermostat home screen, then you’ll see the ALERTS sub-menu.
(The ALERTS sub-menu will only be available when there’s an active alert.)
2 Touch Select to view the alert. A 3-digit alert code will appear by the thermostat’s
clock and a description of the alert will scroll on the screen.
3 If the alert is non-critical, you’ll have the option to Snooze or Dismiss it. If you have
multiple alerts, touch the
or arrows to page through the list of active alerts
and follow steps 1 and 2 above.
To see what each 3-digit alert code means and the action you should take, refer to the
chart below.
Alerts and maintenance reminders
Number Alert/Reminder Recommended action
164 Heat Pump Needs
Service
Contact your heating or cooling professional to diagnose
and service the heat pump.
168 WiFi Radio Error The wireless module isn’t operating, and wireless
features aren’t available. Contact your heating or cooling
professional for assistance.
170 Internal Memory Error The thermostat’s memory has encountered an error.
Contact your heating or cooling professional for
assistance.
171 Set the Date and Time Please set the time and date on the thermostat to ensure
features like scheduling can operate. See page 23 for
instructions.
173 Thermostat
Temperature Sensor
Error
The temperature sensor on the thermostat has
encountered an error. Contact your heating or cooling
professional for assistance.
175 AC Power Resumed AC power to the thermostat has been restored after
power loss. You don’t need to take any action.
177 Indoor Temperature
Sensor Error
The wired indoor temperature sensor is not connected or
there is a wiring short. Contact your heating or cooling
professional for assistance.