Honeywell RTH9580 Thermostat User Manual


 
69-2809ES—03 36
Setting system mode
1 Touch SYSTEM to display system settings.
2 Touch desired option:
Heat: Thermostat controls only the
heating system.
Cool: Thermostat controls only the
cooling system.
Off: Heating/cooling systems are off.
Automatic: Thermostat selects heating
or cooling as needed depending on the
indoor temperature.
Emergency Heat (heat pumps
with aux. heat): Controls auxiliary/
emergency heat. Compressor is locked
out.
3 Touch Done to save and exit.
Note: The Automatic and Emergency Heat
system settings may not appear, depending
on how your thermostat was installed.
SYSTEM
Done