RTHL3550
7 69-2583ES—01
About your new thermostat
Select the system setting
Press the
SYSTEM
button to select Heat, Cool or Off.
•
Heat
: Thermostat controls only the heating system.
•
Cool
: Thermostat controls only the cooling system.
•
Off
: Heating and cooling systems are off.
•
Auto
: Thermostat automatically selects heating or
cooling depending on the indoor temperature.
•
Em Heat
(only for heat pumps with auxiliary heat):
Thermostat controls Emergency and Auxiliary Heat.
Compressor is locked out.
CAUTION: EQUIPMENT DAMAGE
HAZARD.
To prevent possible
compressor damage, do not operate
cooling system when outdoor
temperature is below 50 °F (10 °C).
Note:
The Auto and Em Heat set-
tings may not appear, depending on
how your themostat was installed.
MCR32592
System
Fan
On
Cool
System
Fan
Auto
Heat
/