White Rodgers SuperStat Pro Programmable Thermostat - Manual (Page 7)

SuperStat Pro User Guide 5
SYSTEM
Selects the mode in which you want the system to
operate: cooling, heating, auto-changeover,
emergency heat (applies to heat pumps only), or OFF.
PRGM
Allows you to program
your thermostat
FAN
Controls your system’s indoor
fan. For energy efficiency, this
is normally set to AUTO but
can be set to ON.
DEVICE/MODE
Toggles between COOL and
HEAT for programming.
TIME/SET
Toggles between the period
start time and temperature
setpoint you want to program.