Buttons, Backlight, Timers & Settings - Lennox ComfortSense 3000 Series Operation Manual

At this point, the thermostat will be fully functional; its default
temperature set point (not shown) is 70°F. At this point, if the
equipment has been fully powered and if a heat demand
were present, the system would begin operating. UC
indicates unoccupied and OC indicates occupied.
NOTE - Temperature scale default is Fahrenheit units but
may be reset to show Celsius, if desired. See page 14.
Buttons, Backlight, Timers & Settings
Buttons are located behind the small door on the right-hand
side of the thermostat (see figure 2).
10:36
MO
AM
FAN
PM
HOLD
AUTO
SYSTEM
ROOM
72
COOL
°
UC
Figure 2. Thermostat Buttons
Heat Cool
Prog Day/Time
Fan Hold
(DOOR
OPEN)
Settings Enter
IMPORTANT
Do NOT begin pressing buttons until after you read the fol­
lowing section describing each button.
A pale blue display backlight illuminates for 30 seconds
each time any button is pressed.
When PROG or DAY/TIME is pressed, a field begins
flashing, expecting another input. Start making changes
within 15 seconds or the HOME screen will return.
When an Arrow, HOLD, HEAT, or COOL button is pressed,
setpoint and temperature setting appears for 15 seconds. If
desired, start making changes within 15 seconds or the
HOME screen will return. The backlight will turn off 15
seconds after the HOME screen reappears.
This product contains a chemical known to the State of
California to cause cancer, birth defects, or other
reproductive harm.
Page 3
WARNING
5/2 DAY PROGRAMMABLE COMMERICAL THERMOSTAT