About Your New Thermostat Controls And Home Screen Quick Reference; Display Screen - Honeywell RTH8500 Owner's Manual

Thermostat controls
Press day(s) to set program schedule (see page 14).
Press FAN to select:
Auto: Fan runs only
when heating or cooling
system is on.
On: Fan runs
continuously.
Press DONE to exit
and save settings.
Press SYSTEM to select:
Heat: Heating system control.
Cool: Cooling system control.
Auto: Thermostat automatically selects
heating or cooling depending on the
indoor temperature.
Off: All systems off.
Em Heat: Emergency & Auxiliary Heat
control. Compressor is locked out.
(Select models only.)
Press DONE to exit and save settings.

Display screen

Current inside temperature.
Current time.
Other display messages:
Cool On: Cooling system is on.
Heat On: Heating system is on.
Aux Heat On: Auxiliary heating system is activated (heat pump systems only)
MON TUE WED THU
OK TO PICK MULTIPLE DAYS
FAN 70
Inside
Set To
AUTO
SYSTEM
HEAT
6:01
AM
SCHED HOLD CLOCK SCREEN
Hold
Press to override
program schedule.
Sched
Press to set program schedule.
Current day of week.
WED
FAN 70
Inside
Set To
AUTO
SYSTEM
HEAT
6:01
AM
SCHED HOLD CLOCK SCREEN
13
Arrow keys
Press to adjust
FRI SAT SUN
temperature or to make
70
selections from screen
menus.
Following
Schedule
Clock
Press to set clock.
Screen
MORE Press to lock keypad
for 30 seconds to clean
M28373
screen.
More
Press for more options
(select models only).
Temperature setting.
70
Program schedule on
Following
Schedule
(does not display when off)
Recovery
MORE
Smart Response
Technology in effect.
M28374
®