T1--NAC
T1--NHP
LEGACY LINE--RNC
NON--PROGRAMMABLE THERMOSTAT
Homeowner’s GuideDesigned and Assembled
in the USA.
A07110
Le g a c y Li n e --- R N C N o n --- P r o g r a m m a b l e Th e r m o s t a t
1. To Select theMode:
Use the H/C button to move between the choices. OFF,
HEAT,COOL, or EMHT will ap pear on the display. EMHT
willonly appear on heat pump models.
2. To Select the Fan Operation:
Use the FAN buttonto move between continuous fan (in-
dicatedby the FAN ON icon)and auto fan operation.
3. To Read the Room Temperature:
The large displayreads room temperatureuntil a button is
pressed.
4. To Adjust the Setpoint:
In normal operation,the large displayshows room temper-
ature. At the firstpress of the UP or DOWN button, the
largedisplay shows the currentsetpoint and the SET TEMP
icon is turnedon. Further presses of the UPor DOWN but-
ton adjust the setpointupward or downward. Five seconds
after the last button press, th e display returns to the room
temperatureand the SET TEMP icon turns off.
TROUBLESHOOTING
What if thereis a green light on in the upper
corner of the display area?
This thermostat uses a green LED to indicate auxiliary heat an d
emergency heatoperation on the Heat Pump model. This green
lightmeans one of two things.
1. Auxiliary Heat is on:
This light turns on automatically when the sy stemd eterm-
inesthat it’s too coldoutside for your heat pump to heatthe
house without help. So, it’s getting help from the electric
heaters.
NOTE: This indicator does not reflect a problem withyour
system.
2. Emergency Heat ison:
If theheat pump is not working properly,you can manually
select the emergency heat for extra h elp in heating. You’ll
know there’sa problem if the house can’tseem to get warm
when it’scold outside.
You wantto avoid using emergency heat, though,because
it’sthe most expensive option. And, of course, if you sus-
pect a problem with your heatpump, call your heating and
cooling dealer immediately.