Carrier ZC Series Owner's Manual page 9

In order to circulate air (without cooling or heating),
press the Fan button.
NOTE
The Fan Function only circulates the air in
the room.
When this function is activated, the letter is displayed
on the panel.
To set the fan speed, press the fan speed button.
The speed can be selected among one of the three
existing levels.
The selected speed (air flow) will be indicated on the
control panel as follows:
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To automatically adjust the unit according to the room
temperature variations, alternating between cool and
heat and high, medium or low speed, activate the Auto
mode.
When this function is activated, the letter is displayed
on the panel.
To eliminate the air humidity in the room, press the
De-humidification button. This function gradually
removes the room humidity, with little changes to the
temperature, providing more comfort.
When this function is activated, the letter is displayed
on the panel. The unit will always operate in low cooling.
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