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Operating Tips; Cleaning And Care - Fujitsu AIRSTAGE ABYA12GATH Operating Manual

Indoor unit
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Horizontal direction
AB A 12/14/18/24
AB A 30/36/45/54
1 2
Cooling & Dry : 1, 2, 3, 4, 5
Heating
: 1, 2, 3, 4, 5

OPERATING TIPS

Operation and Performance
About priority state and standby state
Multiple indoor units can be connected within the same system.
Depending 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.
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.
En-3
3
4 5
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, resulting
in reduced operating performance. In order to prevent this kind of
reduced performance, this unit is equipped with a Microcomputer-
controlled 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.
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).
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.
Be sure the intake grille is installed securely.
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.
AB
A 12/14/18/24
During periods of normal use, the air fi lters should be cleaned every
two weeks.
AB
A 30/36/45/54
During periods of normal use, the air fi lters should be cleaned every
four weeks.
Heating Mode
About 10 to 30 °C DB

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