Cleaning And Care; Troubleshooting - Fujitsu AIRSTAGE ARUV12TLAV Operating Manual

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.
● When used for extended periods, the indoor unit may accumulate dust
inside, reducing its performance. We recommend that the indoor unit be
inspected regularly, in addition to your own cleaning and care. For more
information, consult authorized service personnel.
● 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.
● 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 lters should be cleaned regularly.
Air fi lter replacement
Remove the fi lter panel to replace old fi lter with a new fi lter.
Filter panel
Screws
Model ARUV12/18/24
in 16 x 22.25 x 1
Filter size
(W x D x H)
mm 406 x 565 x 25
● If dirt is allowed to accumulate on the air fi lter, airfl ow will be reduced,
lowering operating effi ciency and increasing noise.
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 opera-
tion failures.
Doesn't operate immediately:
● If the unit is stopped and then immediately started again, the compressor
will not operate for about 3 minutes, in order to prevent fuse blowouts.
● Whenever the electrical breaker is turned off then on again, the protection
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.)
En-3
Air fi lter
ARUV30/36 ARUV48/60
20 x 22.25 x 1 22 x 22 x 1
508 x 565 x 25 558 x 558 x 25
● 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:
(Limited to only when receiver unit is connected)
● 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 performed. (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 indica-
tor lamp (orange) fl ashes:
This is the standby state. (See page 2.)
Noise is heard:
● In the following conditions there are sounds of water fl owing from the
indoor unit and the operation sound becomes loud. These are the sounds
of the fl owing of refrigerant.
When operation starts
When oil recovery operation fi nishes
When automatic defrosting operation fi nishes
● During operation, a slight squeaking sound may be heard. This is the
result of minute expansion and contraction of the panel due to tempera-
ture changes.
● During Heating operation, a sizzling sound may be heard occasionally.
This sound is produced by the Automatic Defrosting operation. (See page
2.)
Smells:
● Some smell may be emitted from the indoor unit. This smell is the result
of room smells (furniture, tobacco, etc.) which have been taken into the
air conditioner.
Fog comes out of the indoor unit:
● During Cooling operation, a thin mist may be seen emitted from the
indoor unit. This results from the sudden Cooling of room air by the air
emitted from the air conditioner, resulting in condensation and misting.
Steam comes out of the indoor unit:
● During Heating operation, the outdoor unit's fan may stop, and steam
may be seen rising from the unit. This is due to the Automatic Defrosting
operation. (See page 2.)
Water is produced from the outdoor unit:
● During Heating operation, water may be produced from the outdoor unit
due to the Automatic Defrosting operation.
The following conditions may not be breakdowns so
check again.
Doesn't operate at all:
● Has there been a power failure?
● Has a fuse blown out, or a circuit breaker been tripped?
● Is the main power switch set to the OFF position?
● Are you trying to engage in an operation different from the priority state?
(See page 2.)
● Is it in standby state? (See page 2.)
The operation mode cannot be changed:
● Are you trying to change to an operation different from the priority condi-
tions? (See page 2.)