Auto Changeover/Mode Operation - Fujitsu UTY-LNHUM Operating Manual

OPERATION
To Stop Operation
Press the "START/STOP" button.
The OPERATION Indicator Lamp (green) will go out.
About AUTO CHANGEOVER Operation
● When AUTO CHANGEOVER operation fi rst selected, the fan will operate
AUTO:
at very low speed for about 1 minute, during which time the unit detects the
room conditions and selects the proper operating mode.
If the difference between temperature setting and actual room temperature
is more than +4 °F
→ Cooling or dry operation
(Monitor operation may be selected if the outdoor temperature is low.)
If the difference between temperature setting and actual room temperature
is within ±4 °F
→ Monitor operation
If the difference between temperature setting and actual room temperature
is more than –4 °F
→ Heating operation
(Monitor operation may be selected if the outdoor temperature is high.)
● When the air conditioner has adjusted your room's temperature to near the
temperature setting, it will begin monitor operation. In the monitor operation
mode, the fan will operate at low speed. If the room temperature subse-
quently changes, the air conditioner will once again select the appropriate
operation (Heating, Cooling) to adjust the temperature to the value set in
the temperature.
(The monitor operation range is ±4 °F relative to the temperature setting.)
● If the mode automatically selected by the unit is not what you wish, select
one of the mode operation (HEAT, COOL, DRY, FAN).
About Mode Operation
Heating: ● Use to warm your room.
● When Heating mode is selected, the air conditioner will operate at very low
fan speed for about 3 to 5 minutes, after which it will switch to the selected
fan setting. This period of time is provided to allow the indoor unit to warm
up before beginning full operation.
● When the room temperature is very low, frost may form on the outside unit,
and its performance may be reduced. In order to remove such frost, the unit
will automatically enter the defrost cycle from time to time. During Automatic
Defrosting operation, the OPERATION Indicator Lamp will fl ash, and the
heat operation will be interrupted.
● After the start of heating operation, it takes some time before the room gets
warmer.
Cooling: ● Use to cool your room.
Dry: ● Use for gently cooling while dehumidifying your room.
● You cannot heat the room during Dry mode.
● During Dry mode, the unit will operate at low speed; in order to adjust room
humidity, the indoor unit's fan may stop from time to time. Also, the fan may
operate at very low speed when adjusting room humidity.
● The fan speed cannot be changed manually when Dry mode has been
selected.
Fan: ● Use to circulate the air throughout your room.
During Heating mode:
Set the temperature to a temperature setting
that is higher than the current room tempera-
ture. The Heating mode will not operate if
the temperature is set lower than the actual
room temperature.
During Cooling/Dry mode:
Set the temperature to a temperature setting
that is lower than the current room tempera-
ture. The Cooling and Dry modes will not
operate if the temperature is set higher than
the actual room temperature, the fan alone
will operate.
During Fan mode:
You can not use the unit to heat and cool
your room.
En-6