Set System Setting - Honeywell RTH8500D Owner's Manual

Set System Setting

Press the System button to select Heat, Off or Cool:
Heat—Thermostat controls the heating system.
Off—Both the heating and cooling systems are off.
Cool—Thermostat controls the cooling system.
Em. Heat (Heat Pump Systems with Auxiliary Heat)—
Thermostat controls emergency heat and auxiliary heat, if
needed. Heat Pump compressor is not operational.
CAUTION
Equipment Damage Hazard.
Air conditioning compressor damage possible.
Do not operate cooling system when outdoor temperature is
below 50 °F (10 °C).
69-1725-1
Set System Setting
FAN
Inside
AUTO
SYSTEM
HEAT
SCHED HOLD
THU
Set To
AM
CLOCK SCREEN
40
Following
Schedule
M19962