16
11. Trouble Shooting
Having trouble? Here is the solution. (Unit is operating normally.)
Airfl ow direction changes during operation or airfl ow direction cannot be
set.
■ During cooling mode, the vanes automatically move to the horizontal
(down) position after 1 hour when the down (horizontal) airfl ow direc-
tion is selected. This is to prevent water from forming and dripping
from the vanes.
■ During heating mode, the vanes automatically move to the horizontal
airfl ow direction when the airfl ow temperature is low or during defrost-
ing mode.
When the airfl ow direction is changed, the vanes always move up and
down past the set position before fi nally stopping at the position.
■ When the airfl ow direction is changed, the vanes move to the set po-
sition after detecting the base position.
A fl owing water sound or occasional hissing sound is heard. ■ These sounds can be heard when refrigerant is fl owing in the air con-
ditioner or when the refrigerant fl ow is changing.
A cracking or creaking sound is heard. ■ These sounds can be heard when parts rub against each due to ex-
pansion and contraction from temperature changes.
The room has an unpleasant odor. ■ The indoor unit draws in air that contains gases produced from the
walls, carpeting, and furniture as well as odors trapped in clothing,
and then blows this air back into the room.
A white mist or vapor is emitted from the indoor unit. ■ If the indoor temperature and the humidity are high, this condition
may occur when operation starts.
■ During defrosting mode, cool airfl ow may blow down and appear like
a mist.
Water or vapor is emitted from the outdoor unit. ■ During cooling mode, water may form and drip from the cool pipes
and joints.
■ During heating mode, water may form and drip from the heat ex-
changer.
■ During defrosting mode, water on the heat exchanger evaporates and
water vapor may be emitted.
The operation indicator does not appear in the remote controller display. ■
Turn on the power switch. “ ” will appear in the remote controller display.
“ ” appears in the remote controller display. ■ During central control, “ ” appears in the remote controller display
and air conditioner operation cannot be started or stopped using the
remote controller.
When restarting the air conditioner soon after stopping it, it does not op-
erate even though the ON/OFF button is pressed.
■ Wait approximately three minutes.
(Operation has stopped to protect the air conditioner.)
Air conditioner operates without the ON/OFF button being pressed. ■ Is the on timer set?
Press the ON/OFF button to stop operation.
■ Is the air conditioner connected to a central remote controller?
Consult the concerned people who control the air conditioner.
■ Does “ ” appear in the remote controller display?
Consult the concerned people who control the air conditioner.
■ Has the auto recovery feature from power failures been set?
Press the ON/OFF button to stop operation.
Air conditioner stops without the ON/OFF button being pressed. ■ Is the off timer set?
Press the ON/OFF button to restart operation.
■ Is the air conditioner connected to a central remote controller?
Consult the concerned people who control the air conditioner.
■ Does “ ” appear in the remote controller display?
Consult the concerned people who control the air conditioner.
Remote controller timer operation cannot be set. ■ Are timer settings invalid?
If the timer can be set, , , or appears in
the remote controller display.
“PLEASE WAIT” appears in the remote controller display. ■ The initial settings are being performed. Wait approximately 3 min-
utes.
An error code appears in the remote controller display. ■ The protection devices have operated to protect the air conditioner.
■ Do not attempt to repair this equipment by yourself.
Turn off the power switch immediately and consult your dealer. Be
sure to provide the dealer with the model name and information that
appeared in the remote controller display.
Draining water or motor rotation sound is heard. ■ When cooling operation stops, the drain pump operates and then
stops. Wait approximately 3 minutes.
Noise is louder than specifi cations. ■ The indoor operation sound level is affected by the acoustics of the
particular room as shown in the following table and will be higher than
the noise specifi cation, which was measured in an echo-free room.
High sound-
absorbing rooms
Normal rooms Low sound-ab-
sorbing rooms
Location
examples
Broadcasting
studio, music
room, etc.
Reception
room, hotel
lobby, etc.
Offi ce, hotel
room
Noise levels 3 to 7 dB 6 to 10 dB 9 to 13 dB
Nothing appears in the wireless remote controller display, the display
is faint, or signals are not received by the indoor unit unless the remote
controller is close.
■ The batteries are low.
Replace the batteries and press the Reset button.
■ If nothing appears even after the batteries are replaced, make sure
that the batteries are installed in the correct directions (+, –).
The operation lamp near the receiver for the wireless remote controller
on the indoor unit is blinking.
■
The self diagnosis function has operated to protect the air conditioner.
■ Do not attempt to repair this equipment by yourself.
Turn off the power switch immediately and consult your dealer. Be
sure to provide the dealer with the model name.