Cassette Operation Manual

En-4
Heating and Cooling model (Reverse cycle):
• When AUTO (auto changeover) is selected, the air condi-
tioner selects the appropriate operation mode (Cooling or
Heating) according to your room’s present temperature.
• When Auto mode is fi rst selected, the fan will operate at
low speed for about a few minutes, during which time the
indoor unit detects the room conditions and selects the
proper operation mode.
Room temperature is higher than the defi ned tempera-
ture in temperature setting → Cooling mode
Room temperature is close to the defi ned temperature in
temperature setting → Determined by outdoor tempera-
ture
Room temperature is lower than the defi ned temperature
in temperature setting → Heating mode
Defi ned temper-
ature in tempera-
ture setting
Determined by
outdoor temperature
Cooling mode
Heating mode
• When the air conditioner has adjusted your room’s
temperature to near the thermostat setting, it will begin
monitor operation. In the monitor operation mode, the
fan will operate at low speed. If the room temperature
subsequently changes, the air conditioner will once again
select the appropriate operation (Heating, Cooling) to ad-
just the temperature to the value set in the thermostat.
If the mode automatically selected by the unit is not what
you wish, select one of the mode operation (Heating,
Cooling, Dry, Fan).
Heat*
• 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 outdoor unit, and its performance may be re-
duced. In order to remove such frost, the unit will auto-
matically enter the defrost cycle from time to time. During
Automatic defrosting operation, the Heating operation
will be interrupted.
• After the start of Heating operation, it takes sometime
before the room gets warmer.
Cool
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.
NOTES
*During Heating mode:
Set the thermostat to a temperature setting that is higher
than the current room temperature. The Heating mode will
not operate if the thermostat is set lower than the actual
room temperature.
During Cooling/Dry mode:
Set the thermostat to a temperature setting that is lower than
the current room temperature. The Cooling and Dry modes will
not operate if the thermostat is set higher than the actual room
temperature (in Cooling mode, the fan alone will operate).
During Fan mode:
You cannot use the unit to heat or cool your room.
Fan speed
Controls the fan speed.
AUTO HIGH QUIETMED LOW
When AUTO is selected, the fan speed is automatically ad-
justed according to the operation mode.
Heating*: The fan will operate at very low speed when the
temperature of the air issued from the indoor unit
is low.
Cooling: As the room temperature approaches that of the
set temperature, the fan speed becomes slower.
Fan: The fan runs at medium fan speed.
Auto restart
In Event of Power Interruption
• Should the power supply to the air conditioner be inter-
rupted by a power failure, the air conditioner will restart
automatically in the previously selected mode once the
power is restored.
• Use of other electrical appliances (electric shaver, etc.) or
nearby use of a wireless radio transmitter may cause the
air conditioner to malfunction. In this event, temporarily
disconnect the power supply, reconnect it, and then use
the remote controller to resume operation.
If only the following remote controller is connected, auto
restart is not performed.
UTY-R*RY
Multiple remote controller (optional)
An additional remote controller can be added up to the
maximum of two remote controllers. Either remote controller
can control the air conditioner. However, the timer functions
cannot be used at the secondary unit.
Group control
One remote controller can control up to 16 air conditioners.
All of the air conditioners will be operated with the same settings.
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