Honeywell MAGIC STAT CT3100 - Manual (Page 4)

SYSTEM SWITCH—Lets you select heating or cooling operation. In OFF, furnace and air
conditioner are both turned off, while the thermostat remembers your program so it can resume
control when set back to HEAT or COOL.
FAN SWITCH—Lets you select ON for continuous fan operation, or AUTO for fan operation as
needed during heating and cooling.
MODE SELECTION BUTTON—Use to change modes—manual mode, setting the day and the
clock modes, temperature display mode, or time display mode.
TIME PROGRAMMING BUTTON—Use to set the correct day, hour, and minute, and to set the
desired times when programming temperature changes.
PROGRAM REVIEW BUTTON—Use when starting, reviewing, canceling, or changing the program.
HEAT BUTTON—Use to setthe desired temperatures in your heating program; to raise the setting,
hold the button; to lower the setting, tap it.
COOL BUTTON—Use to set the desired temperatures in yourcooling program;to lowerthe setting,
hold the button; to raise the setting, tap it.
RESET BUTTON—Small white button beneath battery cover which erases everything to start over.
BATTERY—9 V alkaline battery allows armchair programm ing before installation and 3-year backup
in case of power outage.
PROGRAMMING INSTRUCTIONS (NOT SHOWN)—Inside thermostat cover.
SYSTEM SWITCH
’ MODE SELECTION
BUTTON
. TIME
PROGRAMMING
BUTTON
PROGRAM REVIEW
BUTTON
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