Manual Auto Operation; Operating Tips - Fujitsu AIRSTAGE ARUV12TLAV Operating Manual

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 objects,
otherwise an electric shock or malfunction may occur.
Starting Operation
Press the MANUAL AUTO button on the operating con-
trol panel.
The operation can be set in the following setting.
Operating mode AUTO:
When Auto mode cannot be selected, it will oper-
ate 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 con-
trol panel.

OPERATING TIPS

Operation and Performance
About priority state and standby state
● Multiple indoor units can be connected within the same system. Depend-
ing on the system, choice of operating mode are limited.
Cooling priority When the other indoor units within the same system
state operate in cooling or dry mode, heating can not be
selected at the same time.
Heating priority When the other indoor units within the same system
state 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 ash-
es. (limited to only when receiver unit is connected)
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
insuffi cient heating performance is being produced, we recommend you
use this air conditioner in conjunction with another type of heating appli-
ance.
● 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 tem-
perature high humidity, frost may form on the outdoor unit, resulting in
reduced operating performance. In order to prevent this kind of reduced
performance, this unit is equipped with a Microcomputer-controlled auto-
matic defrosting function. If frost forms, the air conditioner will temporar-
ily stop, and the defrosting circuit will operate briefl 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 con-
nected).
Temperature and humidity range
● The temperature and humidity required for operating this product is as
shown in the following table.
Cooling/Dry Mode
Outdoor
Please refer to the specifi cation of outdoor units.
temperature
Indoor About 64 to 90 °F DB
temperature (18 to 32 °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, con-
densation 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.
Heating Mode
About 50 to 86 °F DB
(10 to 30 °C DB)
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