11
The above operation is performed not only
at the time of installation, but every time the
p
ower circuit breaker is turned off/on.
For comfortable use, do not turn off the
p
ower circuit breaker during seasonal use of
the HEATING OPERATION.
•
The
outdoor
unit
stops.
This is because the indoor temperature has
reached the set temperature.
The indoor unit is in the FAN OPERATION.
COOLING OPERATION
(AUTOMATIC COOLING OPERATION):
Lower the set temperature.
HEATING OPERATION
(AUTOMATIC HEATING OPERATION):
Raise the set temperature.
The operation starts after a while when the
air conditioner is in normal condition.
•
The
remote
controller
displays
“
”
,
This is because the air conditioner
automatically switches to the DEFROST
OPERATION to prevent a decrease in
heating capacity when frost on the outdoor
unit increases.
After maximum 10 minutes, the air
conditioner returns to its original operation.
THE
OPERATION
SOMETIMES
STOPS
•
The
remote
controller
displays
“U4”
and
“U5”,
and
the
operation
stops.
However
,
it
will
restart
in
a
few
minutes.
This is because communication between the
indoor and outdoor units or indoor units and
remote controllers is shut off and stops the
operation due to noise caused by devices
other than the air conditioner.
When the electrical noise decreases, the air
conditioner automatically restarts.
THE
FAN
SPEED
IS
DIFFERENT
FROM
TH
E
SETTING
•
Pressing
the
fan
speed
control
butt
on
does
not
change
the
fan
speed.
During the COOLING OPERATION, the low
fan speed or a gentle wind is used to prevent
the discharge of melt water.
During the DEFROST OPERATION
(HEATING OPERATION), the wind from the
air conditioner stops to prevent air discharge
directly toward your body.
After a while, the fan speed can be changed.
(The fan speed cannot be set for the
PROGRAM DRY OPERATION.)
When the room temperature reaches the
set temperature during the HEATING
OPERATION, the outdoor unit stops and the
indoor unit goes into gentle wind.
It takes some time until the fan speed
changes. Raise the set temperature. After a
while, the fan speed changes.
WHITE
MIST
COMES
OUT
OF
THE
AI
R
CONDITIONER
•
When
humidity
is
high
during
the
COOL-
ING
OPERATION
(In
oily
or
dusty
places)
If the inside of an indoor unit is extremely
contaminated, the temperature distribution
inside a room becomes uneven. It is neces-
sary to clean the inside of the indoor unit.
Ask your local dealer for details on cleaning
the indoor unit.
This cleaning requires a qualified service
person.
Check the usage environment.
•
When
the
air
conditioner
is
changed
ove
r
to
the
HEATING
OPERATION
after
th
e
DEFROST
OPERATION
and
in
the
DE-
FROST
OPERATION.
Moisture generated by defrost becomes
steam and will float around.
When the remote controller display shows
“
”, DEFROST OPERATION is being
used.
NOISE
OF
AIR
CONDITIONERS
•
which
is
heard
when
the
air
conditione
r
is
in
the
COOLING
or
DEFROST
OPERA-
TION
or
a
trickling
sound
which
is
hear
d
when
the
air
conditioner
is
in
the
DE-
FROST
OPERATION.
This is the sound of refrigerant gas flowing
through both indoor and outdoor units.
•
A
“Shuh”
sound
which
is
heard
at
th
e
start
or
immediately
after
the
stop
o
f
operation
or
which
is
heard
at
the
star
t
or
immediately
after
the
stop
of
the
DE-
FROST
OPERATION.
This is the noise of refrigerant caused by flow
stop and flow change.
During the HEATING OPERATION, the
air conditioner switches to the DEFROST
OPERATION automatically.
The remote controller shows “
”.
After maximum 10 minutes, the
air
conditioner returns to its original
operation.
•
A
“Pishi-pishi”
squeaking
sound
is
hear
d
when
the
air
conditioner
is
in
operati
on
or
after
the
stop
of
operation.
Expansion and contraction of resin parts
caused by temperature change makes this
noise.
and airflow stops.
A low continuous flow “Shuh” sound
2.
3.
4.
5.
