LEGACY
Homeowner’s Guide
A07110
Legacy
1.To Select the Mode:
Use the H/C button to move between the choices. OFF, HEAT, COOL, or EMHT will appear on the display. EMHT will only appear on heat pump models.
2.To Select the Fan Operation:
Use the FAN button to move between continuous fan (indicated by the FAN ON icon) and auto fan operation.
3.To Read the Room Temperature:
The large display reads room temperature until a button is pressed.
4.To Adjust the Setpoint:
In normal operation, the large display shows room temperature. At the first press of the UP or DOWN button, the large display shows the current setpoint and the SET TEMP icon is turned on. Further presses of the UP or DOWN button adjust the setpoint upward or downward. Five seconds after the last button press, the display returns to the room temperature and the SET TEMP icon turns off.
TROUBLESHOOTING
What if there is a green light on in the upper corner of the display area?
This thermostat uses a green LED to indicate auxiliary heat and emergency heat operation on the Heat Pump model. This green light means one of two things.
1.Auxiliary Heat is on:
This light turns on automatically when the system determines that it’s too cold outside for your heat pump to heat the house without help. So, it’s getting help from the electric heaters.
NOTE: This indicator does not reflect a problem with your system.
2.Emergency Heat is on:
If the heat pump is not working properly, you can manually select the emergency heat for extra help in heating. You’ll know there’s a problem if the house can’t seem to get warm when it’s cold outside.
You want to avoid using emergency heat, though, because it’s the most expensive option. And, of course, if you suspect a problem with your heat pump, call your heating and cooling dealer immediately.