46
OCH754A
Phone Calls From Customers
How to Respond
Note
1
Check the set temperature of remote controller.
The outdoor unit cannot be operated if the set
temperature is not appropriate.
The outdoor unit operates in the following modes.
COOL: When the set temperature is lower
than the room temperature.
HEAT: When the set temperature is higher
than the room temperature.
2
Check if filters are not dirty and clogged. If filters
are clogged, the airflow amount will be reduced
and the unit capacity will be lowered. See the
instruction manual that came with the product for
how to clean the filters.
3
Check there is enough space around the air
conditioner.
If there are any obstacles in the air intake or air outlet
of indoor/outdoor units, they block the airflow
direction so that the unit capacity will be lowered.
1
An gas escaping sound is heard
sometimes.
1
This is not a malfunction.
This is the sound when the flow of refrigerant in
the air conditioner is switched.
2
A cracking sound is heard
sometimes.
2
This is not a malfunction.
This is the sound when internal parts of units
expand or contract when the temperature
changes.
3
A buzzing sound is heard
sometimes.
3
This is not a malfunction.
This is the sound when the outdoor unit starts
operating.
4
A ticking sound is heard from
the outdoor unit sometimes.
4
This is not a malfunction.
This is the sound when the blower of the outdoor
unit is controlling the airflow amount in order to
keep the optimum operating condition.
5
A sound, similar to water
flowing, is heard from the unit.
5
This is not a malfunction.
This is the sound when the refrigerant is flowing
inside the indoor unit.
2
The fan speed does not match
the setting of the remote
controller in HEAT operation.
The up/down vane will be
automatically set to
horizontal blow in these
cases listed up on the left
(
1
–
3
). After a while, the
up/down vane will be
automatically moved
according to the setting of
the remote controller.
2
This is not a malfunction.
1) When the HEAT operation starts, to prevent the
unit from blowing cold air, the fan speed is
gradually increased from zero to the set speed,
in proportion to the temperature rise of the
discharged air.
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 defrost the outdoor
unit. During the DEFROST operation, the
blower is stopped to prevent cold air coming
out of the indoor unit.
Sound
comes out
from the air
conditioner.
1
The fan speed does not match
the setting of the remote
controller during DRY
operation.(No air comes out
sometimes during DRY
operation.)
1
This is not a malfunction. During the DRY
operation, the blower’s ON/OFF is controlled by
the microprocessor to prevent overcooling and to
ensure efficient dehumidification. The fan speed
cannot be set by the remote controller during DRY
operation.
Something
is wrong
with the
blower…..
The room cannot be cooled or heated sufficiently.
