47
[for wired remote controller]
Check the following table to see whether there is a simple solution to your problem.
Problem
Solution
The room neither gets cool nor
warm very much.
Clean the filter. (Dust and debris
that are collected in the filter will
decrease air-flow.)
Check the temperature setting and
adjust it if necessary.
Increase the space surrounding
the outdoor unit.
Is the air intake or air outlet
blocked?
Is a window or door open?
The unit does not blow air
out right away in the heating
mode.
The unit is preparing to deliver
warm air.
The unit stops operating before
arriving at the set temperature
in the heating mode.
Frost forms when the outdoor
temperature is low and humidity is
high.
Wait for about 10 minutes for the
frost to melt.
The airflow direction suddenly
changes.
After 1 hour of cooling-mode
operation with the airflow in a
downward direction, the unit
will automatically change to the
“Horizontal air-flow” mode. This is
to prevent any moisture that may
have collected from dripping.
When the unit is in the heating
or defrosting mode, it will
automatically change to the
“Horizontal airflow mode”.
The vanes will go through a test
run before they situate into the
specified angle.
Air direction does not move
(change).
(Up/down vane, left/right
louver)
1) Check whether the vane has
been set to a fixed position (check
whether the vane motor connector
has been removed).
2) Check whether the unit has
a function for switching the air
direction. If the unit does not
have this function, "FUNCTION
DOESN'T EXIST" appears when
you press the remote control's UP/
DOWN VANE or LOUVER button.
When changing the airflow
direction, the vanes make
at least a complete rotation
before stopping in place.
The vanes will go through a test
run before they situate into the
specified angle.
There is a “swishing” noise
that occurs from the unit when
water flows.
This sound is made when
refrigerant inside of the unit is
flowing or refilling.
Unit occasionally makes a
gurgling sound.
Not an error. This sound is caused
by the flow of the refrigerant in the
air conditioner being switched.
Unit occasionally thuds.
Not an error. This sound is emitted
when the air conditioner (outdoor
unit) starts operating.
Outdoor unit occasionally
rattles.
Not an error. This sound is caused
by the blower air volume control
that the outdoor unit performs to
maintain the optimum operation
status.
Problem
Solution
A ticking noise is heard from
inside of the unit.
This sound is made when internal
parts of the unit expand or contract
when the temperature changes.
An odour is detected in the
room.
This is caused when the unit
expels odours that have been
absorbed from the walls, carpets,
furniture or clothing.
A white mist is expelled from
the indoor unit.
This may occur just after the unit
is turned on when a high level of
humidity is present in the room.
Water or moisture is expelled
from the outdoor unit.
This occurs to expel water or
moisture that may have collected
in the pipes or around piping
fixtures.
This occurs to dispel water from
the heat exchanger.
The indicators of the remote
controller do not light up when
operated.
Turn on the power switch “
“ will
be displayed.
CENTRALLY CONTROLLED
indicator is displayed in the
remote controller.
The start and stop function of
the remote controller are not
available when the CENTRALLY
CONTROLLED indicator is
displayed.
The start and stop functions
are not available just after
restarting the unit.
Wait about three minutes
(operation has stopped to prevent
damage to the air conditioner).
Fan speed does not match
set fan speed during DRY
operation. (Sometimes no
air comes out during DRY
operation.)
Not an error.
During the DRY operation,
blower ON/OFF is controlled
by a microprocessor to prevent
overcooling and to ensure
efficient dehumidification. The fan
speed can't be set by the remote
controller during DRY operation.
Fan speed does not match
set fan speed during HEAT
operation. (Sometimes no
air comes out during HEAT
operation.)
Not an error.
1) When the HEAT operation
starts, to prevent the unit from
emitting cold air, the fan speed
is gradually increased from zero
to the set speed, in proportion
to the temperature rise of the air
emitted.
2) When the room temperature
reaches the set temperature and
the outdoor unit stops, the unit
starts the LOW AIR operation.
3) During the HEAT operation,
the DEFROST operation is
performed to melt the frost
adhering to the outdoor unit.
During the DEFROST operation,
the blower is stopped to prevent
cold air coming from the indoor
unit.
Air sometimes comes out
when operation is stopped
after HEAT operation.
Not an error.
The blower operates to eliminate
the residual heat in the heated
air conditioner. It stops after
about 1 minute. This operation
is performed when operation is
stopped with the electric heater
ON.
OC379F
