Operating Tips; Cleaning And Care - Fujitsu AIRSTAGE ARXB07GALH Operating Manual

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 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 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 insuffi 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 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
connected).
En-3
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 18 to 32 °C DB
temperature
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.

CLEANING AND CARE

CAUTION
● Before cleaning the unit, be sure to stop the unit and disconnect the
power supply.
● Do not stand on an unstable platform when cleaning.
● When removing and replacing the air fi lters, be sure not to touch the
heat exchanger, as personal injury may result.
● Do not clean the inside of the unit by yourself. To clean the inside,
always consult authorized service personnel.
● When cleaning the unit's body, do not use water hotter than 40 °C,
harsh abrasive cleansers, or volatile agents like benzene or thinner.
● If dirt is allowed to accumulate on the air fi lter, air fl ow will be reduced,
lowering operating effi ciency and increasing noise.
During periods of normal use, the air fi lter should be cleaned every 2
weeks.
Cleaning the air fi lter
Cleaning
Cleaning the air fi lter
Remove dust with a vacuum cleaner or by washing. After washing, be
sure to allow it to dry thoroughly in a shady place before reinstalling.
When not using for an extended period
Leave the breaker on for at least 12 hours before starting operation
when it is to be used again.
Heating Mode
About 10 to 30 °C DB