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 Heating mode
Outdoor
temperature
Please refer to the specifi cations of outdoor units.
Indoor
temperature
About 64 to 90 °F DB
(18 to 32 °C DB)
About 50 to 86 °F DB
(10 to 30 °C DB)
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, con-
densation 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.
● 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, airfl ow will be reduced,
lowering operating effi ciency and increasing noise.
During periods of normal use, the air fi lters should be cleaned regularly.
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 setting
of the remote controller, the outdoor unit will stop, and the indoor unit’s
fan will stop. If you wish to warm the room further, set a higher setting.
● During Oil recovery operation, the airfl ow may stop for approximately 10
minutes. (Refer to “OPERATING TIPS”)
● During Heating operation, the unit will temporarily stop operation (be-
tween 4 and 15 minutes) as the Automatic defrosting mode operates.
(Refer to “OPERATING TIPS”)
● The fan may operate at low speed during Dry operation or when the unit
is monitoring the room’s temperature.
● In the monitoring in the Auto mode, the fan will operate at low speed.
Indicator lamps are blinking:
(*Limited to only when the optional IR receiver unit is connected.)
● The Operation indicator lamp (green) fl ashes:
An oil recovery operation is being performed. (Refer to “OPERATING
TIPS”)
The Automatic defrosting operation is being performed. (Refer to “OPER-
ATING TIPS”)
● The Operation indicator lamp (green) and Timer indicator lamp (orange)
are blinking alternately:
It has recovered from a power outage.
● The Operation indicator lamp (green) and Timer indicator lamp (orange)
are blinking simultaneously:
It is operating in the test run mode. Ask a manager as there may be
maintenance being conducted.
● The Operation indicator lamp (green) is on and the TIMER indicator lamp
(orange) is blinking:
This is the standby state. (Refer to “OPERATING TIPS”)
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 refrig-
erant fl ow sound.
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. (Refer to
“OPERATING TIPS”)
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.
9380242000-01_OM_3L.indb 39380242000-01_OM_3L.indb 3 2021/4/22 13:39:012021/4/22 13:39:01
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