Honeywell RTH8500 - Manuel (Page 10)

Operating Manual
69-2220EF—03 8
SCHED HOLD CLOCK SCREEN MORE
WED
AM
Following
Schedule
Inside Set To
70
6:01
70 FAN
AUTO
SYSTEM
HEAT
M28378
Press the SYSTEM button to select, then press DONE.
• Heat: Thermostat controls only the
heating system.
• Cool: Thermostat controls only the
cooling system.
• Auto: Thermostat automatically selects
heating or cooling depending on the
indoor temperature.
• Off: Heating and cooling systems are off.
• Em Heat (only for heat pumps with
auxiliary heat): Thermostat controls
Emergency and Auxiliary Heat.
Compressor is locked out.
System setting
Note: The Auto and Em Heat
system settings may not
appear, depending on how
your thermostat was installed.