Table of Contents
3. Clean the air fi lter.
Remove the dust from the air fi lter by vacuuming or washing them. After
washing, allow the air fi lter to dry thoroughly in an area protected from
sunlight.
• 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, air fl ow will be reduced,
lowering operating effi ciency and increasing noise.
4. Re-attach the air fi lter 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.
5. Close the intake grille and push the intake grille's
hooks outward.
● 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
to turn off the fi lter lamp. (Refer to the operation manual packed with
remote control unit 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.
Doesn't 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)
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 tem-
perature 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 Defrost-
ing 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 3)
● Is it in standby state? (See page 3)
● Is the Auto off operation of the Human sensor setting active? (See
page 2)
The operation mode cannot be changed:
● Are you trying to change to an operation different from the priority
conditions? (See page 3)
Poor Cooling (or Heating) performance:
● Did you adjust the room temperature settings (thermostat) correctly?
● Is the air fi lter dirty? (See page 3)
● Are the air conditioner's inlet port or outlet port blocked?
● Is there a window or door open?
● In the case of Cooling operation, is a window allowing bright sunlight to
enter? (Close the curtains.)
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