Cleaning And Care; Troubleshooting - Fujitsu AirStage AUUA7TLAV2 Operating Manual

● 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.
● Be sure the intake grille is installed securely.
● 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 104°F
(40°C), harsh abrasive cleansers, or volatile agents like benzene or
thinner.
● Do not remove any part from the unit except for the fi lter.
● If dirt is allowed to accumulate on the air fi lter, airfl ow will be reduced,
lowering operating effi ciency and increasing noise.
● During periods of normal use, the air fi lters should be cleaned every 2
months.
Cleaning the Air Filter
When the fi lter lamp fl ashes, remove and clean the
fi lter.
1. Push the intake grille's hooks inward towards the
center of the unit to open the intake grille.
2. Pull out the fi lter from the intake grille.
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Grille Hook
3. Clean the air fi lters.
Remove the dust from the air fi lters by vacuuming or washing them. After
washing, allow the air fi lters to dry thoroughly in an area protected from
sunlight.
4. Re-attach the air fi lters to the intake grille.
(1) Replace the air fi lter into its holder.
(2) Make sure that the air fi lter makes contact with the fi lter stopper when
it is replaced into its holder.
En-3
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Air Filter
5. Close the intake grille and push the intake grille's
hooks outward.
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Air Filter
Filter
Hook
Intake Grille
● Dust can be cleaned from the air fi lter either with a vacuum cleaner,
or by washing the fi lter in a solution of mild detergent and warm water.
If you wash the fi lter, be sure to allow it to dry thoroughly in a shady
place before reinstalling.
● If dirt is allowed to accumulate on the air fi lter, airfl ow will be reduced,
lowering operating effi ciency and increasing noise.
● After turning the power on, press the fi lter button on the remote control-
ler to turn off the fi lter lamp. (Refer to the operation manual packed with
remote controller for details.)
Cleaning the body
Wash the body with warm water, and then dry with a clean and soft cloth.
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.

TROUBLESHOOTING

The following conditions are not breakdowns or op-
eration failures.
Does not operate immediately:
● If the unit is stopped and then immediately started again, the com-
pressor will not operate for about 3 minutes, in order to prevent fuse
blowouts.
● Whenever the electrical breaker is turned off then on again, the protec-
tion circuit will operate for about 3 minutes, preventing unit operation
during that period.
Airfl ow is weak or stops:
● When Heating operation is started, indoor unit's fan may temporarily
stop, to allow internal parts to warm up.
● During Heating operation, if the room temperature rises above the
thermostat setting, the outdoor unit will stop, and the indoor unit's fan
will stop. If you wish to warm the room further, set the thermostat for a
higher setting.
● During oil recovery operation, the airfl ow may stop for approximately
10 minutes. (See page 2.)
● During Heating operation, the unit will temporarily stop operation (be-
tween 4 and 15 minutes) as the Automatic Defrosting mode operates.
(See page 2.)
● The fan may operate at low speed during Dry operation or when the
unit is monitoring the room's temperature.
● In the monitor AUTO operation, the fan will operate at low speed.
Flashing lamps:
● The OPERATION indicator lamp (green) fl ashes:
An oil recovery operation is being performed. (See page 2.)
● The OPERATION indicator lamp (green) fl ashes:
An automatic defrosting operation is being per formed. (See page 2.)
● The OPERATION indicator lamp (green) and TIMER indicator lamp
(orange) are fl ashing alternately:
It has recovered from a power outage.
● The OPERATION indicator lamp (green) and TIMER indicator lamp
(orange) are fl ashing simultaneously:
It is operating in trial operation mode. Ask a manager as there may be
maintenance being conducted.
● The OPERATION indicator lamp (green) lights up and the TIMER
indicator lamp (orange) fl ashes:
This is the standby state. (See page 2.)
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Grille Hook