Setting The Fan; Selecting System Mode - Honeywell RTH8500 Guide De L'utilisateur

Setting the fan

FAN
1 Press to select fan operation.
FAN again to select ON or AUTO (toggle
2 Press
to re-select). The selected option blinks.
DONE
3 Press to save setting. Your selection
appears under FAN.
ON: Fan is always on.
AUTO: Fan runs only when the heating or
cooling system is on.

Selecting system mode

SYSTEM
1 Press
SYSTEM
2 Press
You may need to press two or three times to
make a selection—the selected option blinks.
DONE
3 Press to save setting.
Possible system modes:
HEAT: Controls only the heating system.
COOL: Controls only the cooling system.
OFF: Heating/cooling systems are off.
AUTO: Selects heating or cooling
depending on the indoor temperature.
EM HEAT (heat pumps with aux. heat):
Controls auxiliary/emergency heat.
Compressor is locked out.
to display options.
again to select an option.
Note:
system settings may not
appear, depending on how
your thermostat was installed.
15
Inside
Inside
The AUTO and EM HEAT
33-00133EF—01
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