Operating Manual
Quick reference to display screen
System setting
Current time (set at thermostat)
Outside temperature
(appears only if outdoor
sensor is installed)
Outside humidity
(Press to display
for 5 seconds)
Inside temperature
If "No Signal" appears here,
check to make sure there are
fresh batteries in the thermo-
stat, and HVAC power is on.
Note: First press of screen only
turns on backlight.
69-2054EFS—05
HEAT
COOL
8:03
OUTDOOR
SCREEN
58
UNLOCKED
78
REPLACE
BATTERY
READ TEMP FROM...
THERMOSTAT
TOGGLE ZONE
LIVINGROOM
4
OFF
AM
SET TO
78
THIS DEVICE
M28883
Screen
lock/unlock
Temperature
setting
Replace battery
warning
Temperature
sensor source
(appears if you
have only one
thermostat)
Zone control
(appears only if
you have more
than one ther-
mostat)