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11. Trouble Shooting
Having trouble?
Here is the solution. (Unit is operating normally.)
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 exchanger.
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 dis-
play.
Turn on the power switch. “ ” will appear in the remote controller
display.
The air conditioner does not operate even though the ON/OFF button
is pressed. The operation mode display on the remote controller dis-
appears.
Is the power switch of the indoor unit turned off? Turn on the power
switch.
“
” 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
operate 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,
WEEK LY
,
SIMPLE
or
AU TO OFF
appears in the
remote controller display.
“PLEASE WAIT” appears in the remote controller display.
The initial settings are being performed. Wait approximately 3 minutes.
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 par-
ticular 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-ab-
sorbing 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 re-
mote 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 control-
ler 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.
Warm air blows from the indoor unit intermittently when heating mode
is off or during fan mode.
When another indoor unit is operating in heating mode, the control valve
opens and closes occasionally to maintain stability in the air conditioning
system. This operation will stop after a while.
* If this will cause an undesirable rise in the room temperature in small
rooms, etc., stop the operation of the indoor unit temporarily.