18
TROUBLE SHOOTING
The phenomena mentioned below is not malfunction.
TROUBLE SHOOTING
Check the follo
THE UNIT DOES NO
Is the power supply s
turned off?
Is there a black
fuse blown?
Is the leakage breaker
activated?
Dangerous.
off the power supply s
and contact your dealer
Is sunlight or other strong
illumination striking the
receive unit? (wireless unit)
Is the air filter clogged?
Is the swing louver
horizontal (during
heating)?
If the swing
louver is
horizontal, the
airflow may not
reach down to
the floor
Are there any obstacles
blocking the air inlet
and outlet grill?
• Is the direct daylight
coming into the room?
• Are there any
unexpected heat
sources in the
room?
•
people in the room?
Is the unit in the
heating preparation
mode?
See page 18
POOR COOLING OR HEA POOR COOLING
If,
• If the fuse and breaker blow frequently • If water drips at cooling/dehumidifying operation. • If the operation or operation noise is abnor
• If the check indicator light flashes.
The phenomena mentioned below is not malfunction.
NO AIRFLO
The air conditioning system
sounds as if water is
draining from it.
Sounds of rustling or gurgling may be heard when the operation is started, when the compressor is activated/
deactivated during operation, or when the operation is stopped.
flowing through the system.
Sounds of rustling or
gurgling may be heard from
a stopped indoor unit.
These sounds can be heard when the air conditioning system is performing automatic control.
MAINTENANCE OF
A
(after a long period of use)
A
(after a long unused period)
• Clean the unit by wiping with a piece of soft and dry cloth.
If the unit is very dir
neutral detergent dissolved in luk
off with clean water
• Clean the air filter and mount it.
• Clean the indoor/outdoor units.
• Inspect the air filter
•
6
hours bef
starting the operation.
How to c
1 Wash
cleaner
If it is v
water (appro
the detergent awa
2 After the air filter is dried, mount it to the main body and press
RESET button.
A
• Do not dry by e
using fire.
• Do
Otherwise it may lead to troub
HOW TO MAINT
The supply air from the
indoor unit smells bad.
The supply air from the indoor unit may smell bad if the smell of cigarettes, cosmetics and/or furniture has
saturated the air conditioning system.
White vapor is generated
from the indoor unit during
operation.
White vapor ma
frequently used, such as in restaurants.
The operation switched to
fan operation during cooling
operation.
The operation may s
the heat exchanger
The operation switched to
fan operation during cooling
operation.(in case of FDFW
type)
In case the relative humidity is 73% or higher
operation ev
prev
The indoor fan does
not stop ev
operation is stopped in
heating mode.
The indoor unit fan ma
unit.
REQUESTS
Do not turn off the power supply until the fan stops.
The air conditioning system
cannot start operating again
immediately after stopping.
During the first 3 minutes after stopping operation, it is not possible to perf
heating operation ev
protecting the compressor is activated (the f
No air comes out during
dehumidifying operation.
The airflow volume cannot
be changed.
During dehumidifying operation, the fan speed is automatically controlled in low speed/stop cycle in order to
avoid both dr
The swing louv
without any operation.
The swing louv
The louver also mov
display
The outdoor unit discharges
water or steam during
heating operation.
Water or steam is discharge during defrosting operation which remo
heat exchanger in the outdoor unit in heating mode.
The operation mode cannot
be selected (in case of the
heat recovery system KXR).
When operation mode is set to the main and sub indoor unit during the heat recovery system KXR, operation
mode of the sub unit cannot be selected.(In this case, the system conforms to operation mode of the main
unit.)
The outdoor unit fan is not
running even when the
system is in operation.
The fan speed is automatically controlled according to the ambient temperature
ambient temperature in case of heating, and in low ambient temperature in case of coding.
stopped during defrosting operation.
REQUESTS
The fan will suddenl
Slapping These sounds are generated when plastic components are e
each other
Hissing sounds
when the
stopped or
operation.
These sounds are generated when the refrigerant valv
The air
operation automatically
soon as the power supply is
turned on.
In case the automatic restart function is enabled, and when the power supply recovers
the operation automatically as same condition as before po
See below
The setting
cannot be
setting temperature displa
flashes).
If changing the set temperature is prohibited on the remote control, it is not possible to change the
temperature setting evT or S is pressed.
See right
The airflow
if the
changed during
(in case of the heat recovery
system KXR).
When you s
becomes weak for 3 min
In case
control, the
operate with the
display
unit flashing
any
control is pressed.
In case the system is controlled by the other centralized remote control and it f
from the remote control, it is not possible to operate b
