8
NOTICE
• Do not turn off the power immediately
after the unit stops, but wait for at least 5
minutes.
• The system need at least 5 minutes for
residual operation of drain pump device.
Turning off the power immediately will
cause water leak or trouble.
6.1.2
Explanation of heating operation
It may take longer to reach the set temperature for
general heating operation than for cooling operation.
The following operation is performed in order to
prevent the heating capacity from dropping or cold
air from blowing.
Defrost operation
• In heating operation, freezing of the outdoor
unit’s air cooled coil increases over time,
restricting the energy transfer to the outdoor
unit’s coil. Heating capability decreases and the
system needs to go into defrost operation to be
able to deliver enough heat to the indoor units.
• When a outdoor unit is installed, the indoor unit
will stop fan operation, the refrigerant cycle will
reverse and energy from inside the building will
be used to defrost the outdoor unit coil.
• The indoor unit will indicate defrost operation on
the displays “
”.
Hot start
• In order to prevent cold air from blowing out of
an indoor unit at the start of heating operation,
the indoor fan is automatically stopped.
The display of the remote controller shows
“
”. It may take some time before the fan
starts. This is not a malfunction.
INFORMATION
• The heating capacity drops when the
outside temperature falls. If this happens,
use another heating device together with
the unit. (When using together with
appliances that produce open fire,
ventilate the room constantly).
Do not place appliances that produce
open fire in places exposed to the airflow
from the unit or under the unit.
• It takes some time to heat up the room
from the time the unit is started since the
unit uses a hot-air circulating system to
heat the entire room.
• If the hot air rises to the ceiling, leaving
the area above the floor cold, we
recommend that you use the circulator
(the indoor fan for circulating air).
Contact your dealer for details.
6.2
Program dry operation
• The function of this program is to decrease the
humidity in your room with minimal temperature
decrease (minimal room cooling).
• The microcomputer automatically determines
temperature and fan speed
(cannot be set by the remote controller).
• The system does not go into operation if the
room temperature is low (<20°C).
6.2.1
For Systems without COOL/HEAT
changeover remote control switch
STARTING THE SYSTEM
2-3
1
1
Press the operation mode selector button
several times and select “ ” (program dry
operation).
2
Press the ON/OFF button of the remote
controller. The operation lamp lights up and
the system starts operating.
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