Alerts and Reminders
|
Alert # |
Alert Meaning |
|
405 |
Low batteries (see Battery Replacement) |
|
407 |
Critically low batteries (see Battery Replacement) |
|
170 |
Thermostat Memory Failure |
|
173 |
Internal Sensor Error. Issue with the built-in temperature sensor. |
|
181 |
Replace filter (Reset this timer after replacing furnace filter by pressing and holding the upper left and lower right buttons for 5 seconds.) |
When an alert is active, an 
icon will appear in the lower part of the display. Pressing the lower left button, then the upper right button will show the alert # over the temperature reading.
When the filter Reminder is active the 
icon appears as well as Replace Filter.