En-2
Control unit (optional)
Wireless Remote
Controller
Wired Remote Con-
troller
Simple Remote Con-
troller
Be sure to use after
connecting receiver
unit.
For operation method, please refer to the Operating Manual of each
device.
MANUAL AUTO OPERATION
Use the MANUAL AUTO operation in the event the remote control unit is
lost or otherwise unavailable.
*Limited to only when receiver unit is connected.
CAUTION!
Do not press the MANUAL AUTO button with wet hands or pointed ob-
jects, otherwise an electric shock or malfunction may occur.
Starting Operation
Press the MANUAL AUTO button on the operating
control panel.
The operation can be set in the following setting.
Operating mode
AUTO:
When Auto mode cannot be selected, it will
operate in the same mode as the other indoor
unit in the same system. (When other indoor
unit in the same system doesn’t operate, the air
conditioner will operate in cooling.)
Fan speed
AUTO
Setting temperature
74 °F (23 °C)
Stopping Operation
Press the MANUAL AUTO button on the operating
control panel.
OPERATING TIPS
Operation and Performance
About priority state and standby state
Multiple indoor units can be connected within the same system. De-
●
pending on the system, choice of operating mode are limited.
Cooling priority
state
When the other indoor units within the same system
operate in cooling or dry mode, heating can not be
selected at the same time.
Heating priority
state
When the other indoor units within the same system
operate in heating mode, cooling and dry mode can
not be selected at the same time.
Standby state
The standby state activates when 2 or more indoor
units start up at the same time in different mode.
Any indoor unit other than priority mode will wait in
standby state until priority mode changes (operation
starts as soon as priority is switched).
At this time, the OPERATION indicator lamp (green)
lights up and the TIMER indicator lamp (orange)
fl
ashes (limited to only when receiver unit is con-
nected).
Low ambient cooling
When the outdoor temperature drops, the outdoor unit’s fans may
●
switch to Low Speed, or one of the fans may stop intermittently.
Heating performance
Heating mode operates on the heat-pump principle, absorbing heat
●
from outdoor air and transferring that heat indoors. As a result, the
operating performance is reduced as outdoor air temperature drops.
If you feel that insuf
fi
cient heating performance is being produced, we
recommend you use this air conditioner in conjunction with another
type of heating appliance.
Heating mode heat your entire room by recirculating air throughout the
●
room, with the result that some time may be required after
fi
rst starting
the air conditioner until the room is heated.
Microcomputer-controlled automatic defrosting
When using the Heating mode under conditions of low outdoor air
●
temperature high humidity, frost may form on the outdoor unit, result-
ing in reduced operating performance. In order to prevent this kind of
reduced performance, this unit is equipped with a Microcomputer-con-
trolled automatic defrosting function. If frost forms, the air conditioner
will temporarily stop, and the defrosting circuit will operate brie
fl
y (for
about 4 to 15 minutes).
During Automatic Defrosting operation, the OPERATION indicator
lamp (green) will
fl
ash (limited to only when receiver unit is connected).
Oil recovery operation
Periodically, the oil recovery operation is performed in order to return
●
compressor oil to the outdoor unit.
During oil recovery operation, the OPERATION indicator lamp (green)
will
fl
ash (for about 10 minutes) (limited to only when receiver unit is
connected).
Temperature and humidity range
The temperature and humidity required for operating this product is as
●
shown in the following table.
Cooling/Dry Mode
Heating Mode
Outdoor
temperature
Please refer to the speci
fi
cation of outdoor units.
Indoor
temperature
About 64 to 90 °F DB
(18 to 32 °C DB)
About 50 to 86 °F DB
(10 to 30 °C DB)
Indoor humidity
About 80% or less
If the air conditioner is operated under higher temperature conditions
●
than those listed, the built-in protection circuit may operate to prevent
internal circuit damage. Also, during Cooling and Dry modes, if the unit
is used under conditions of lower temperature than those listed above,
the heat-exchanger may freeze, leading to water leakage and other
damage.
If the unit is used for long periods under high-humidity conditions,
●
condensation may form on the surface of the indoor unit, and drip onto
the
fl
oor or other objects underneath.
Do not use this unit for any purposes other than the Cooling, Heating,
●
Dehumidifying, and air-circulation of rooms in ordinary dwellings.
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Summary of Contents for ARUL12RLAV
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