THERMOSTAT QUICK REFERENCE
Battery information
2
On the back of the thermostat insert
2 AA Alkaline batteries (included).
Pull the thermostat directly away
from the wall to access the batteries.
A firm tug will be required to remove
the thermostat from the subbase
mounted on the wall.
Program Menu Options:
Shows different options
during programming.
System Information:
Shows which zone or
zones are controlling
your system. Shown
only when one or more
indoor sensors
R251W
are connected.
Getting to know your thermostat
LCD
1
2
Fan Button
3
System Button
4
5
Temperature
Setpoint Buttons
6
Menu Button
Temperature:
Indicates the current
system temperature.
Days of the week and time.
Flashes outside temperature
when used with R250W.
OUTDOOR will show.
Glow in the Dark
Light Button
6
1
2
3
4
5
Low Battery Indicator:
Replace batteries when
this indicator is shown.
Programmable Time
Period Icons:
This thermostat has
4 programmable
time periods per day.
Important:
The low battery indicator is displayed
when the AA battery power is low. If the
user fails to replace the battery within
21 days, the thermostat display will only
show the low battery indicator as a final
warning before the thermostat
becomes inoperable. The batteries are
located on the back of the thermostat.
Clean Display:
Pressing
CLEAN DISPLAY
will allow 30 seconds to
clean the display. The keys
will be inoperable during this
time.
CLEAN will appear if
your contractor has
programmed a filter change
reminder. Press
CLEAN
when filter has been replaced
to reset the filter change
reminder timer.
NOTE ABOUT THE LIGHT BUTTON:
This button is used to light up the
display, but it is also used to set up
communication with the base module.
DO NOT hold the light button down for
more then 10 seconds, unless you are
performing the initial communication
setup steps.
REMOTE indicates a
remote has control of the
system.
HOLD is displayed when
thermostat program is
permanently overridden.
Indicates
Energy Star
®
approved program is
being used.
Displays the user selectable
setpoint temperature.
System operation indicators:
The
COOL, HEAT or FAN icon
will display when the
COOL,
HEAT or FAN is on.
NOTE: The compressor delay
feature is active if these icons
are flashing. The compressor
will not turn on until the 5
minute delay has elapsed.
COOL HEAT FAN
Wireless Icon
