– 20 –
Troubleshooting
Please carry out the following checks before making a service call.
Poor cooling
Poor cooling or heating
If the air-conditioner does not operate properly after you have checked the above points, or if any doubt still exists after you have
consulted page 20, or if things happen as shown on page 21, switch off the power and contact your dealer.
An alternative refrigerant (R410A) is used in this air-conditioner. When asking your
dealer for service or inspection and maintenance, explain the dealer about it.
Air
ow is not blown out for 5 to 15 min. or blown out not
warm wind for a moment at HEATING operation.
RUN light blinks slowly
(1.5 sec ON, 0.5 sec OFF)
Notice
The unit does not restart immediately after you have stopped it.
(RUN light is on)
Air
ow is not blown out when starting the HEATING operation.
RUN light blinks slowly
(1.5 sec ON, 0.5 sec OFF)
Air
ow has stopped to prevent blowing out of cold air until the
indoor heat exchanger has warmed up. (2 to 5 min.) (HOT KEEP
program)
When outdoor temperature is low and humidity is high, the unit
sometimes performs defrosting automatically. Please wait. Dur-
ing defrosting, water or steam may escape from the outdoor unit.
Air
ow is not blown out when starting the DRY operation.
(RUN light is on)
The indoor fan may stop to prevent re-evaporation of dehumidi
ed
moisture and to save energy.
Some steam escapes during COOL operation.
This may occur if the room’s temperature and humidity are very high. It
disappears as soon as the temperature and humidity decrease.
Restart is blocked for 3 minutes after you have stopped the op-
eration to protect the unit.
The three-minute protection timer in the microcomputer automati-
cally starts it up again.
Is there a power failure or a blown fuse?
Did you leave any doors or windows
open?
Are there too many people in the room?
Is there a heat source in the room?
Is the air
lter clean? (Not clogged?)
Has the power switch been turned off?
Have you set the thermostat at a suitable
temperature?
Is there any direct sunlight entering the
room?
You hear a slight gurgling sound.
This is caused by refrigerating liquid moving within the unit.
You hear a slight cracking sound.
This is caused by heat expansion or contraction.
There is a slight smell.
Air blown out during operation may smell. This is caused by
tobacco or cosmetics adhering to the unit.
You hear a hissing or clicking sound.
This is caused by the operation of the refrigerant control valves
or electric components.
The air-conditioner does not work at all.
Has the timer been set in the “ON”
position?
If the unit is operated for a long time in high humidity, moisture
may form on the air outlet grills and start dripping.
Remote control signals may not be received if the signal receiver on
the air-conditioner is exposed to direct sunlight or other bright light.
If so, cut out the sunlight or reduce the other light.
After a power cut, the unit does not restart even if power has
been restored.
If the auto restart function is not set, the unit will not restart au-
tomatically. Use the remote control to start the operation again.
Remote control signals are not received.
Moisture may form on the air outlet grills.
The noise means that the revolution speed of the compressor is
increasing or decreasing.
Whistling noise is heard from the outdoor unit.
Indoor fan : Fan will not stop after 2 hours if set to CLEAN operation.
Outdoor fan : Fan will not stop about a 1 minute period in order to
protect the unit.
Fan will not stop immediately after unit operation was
stopped.
The RUN light illuminates during CLEAN operation.
Run light turns off when CLEAN operation ends.
RUN light stays on even though operation was stopped.
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– 14 –
ON-TIMER operation
1
2
How to cancel
Press the CANCEL button to turn off the timer
display.
Example: In the case the preferred room temperature is required at 8:00.
Press the ON-TIMER button.
ON TIMER display is blinking.
3
■
Operation starts 5 to 60 minutes before the set time so that the room temperature reaches the optimum temperature at the set time.
Page 15
ON-TIMER operation can be set regardless of whether the air-conditioner is running or not.
SLEEP TIMER + ON-TIMER operation
■
Combined timer operation of SLEEP TIMER and ON TIMER.
Example: When it is required to stop after 3 hours and then start operation at 8:00,
near the set temperature.
■
SLEEP TIMER setting
Set by the procedures on page 13.
Set to
■
ON TIMER operation setting
Set by the above procedure mentioned in ON TIMER.
Set to
The setting of the lighting of the timer light (yellow) of this unit is complete.
Ø
•
After the SLEEP TIMER set time has elapsed, the operation stops, and it
starts from 5 to 60 minutes before the ON TIMER’s set time.
•
The timer light is turned off when ON TIMER set time comes.
Changing of set time
Set a new time by using the SLEEP or ON TIMER button.
How to cancel
Press the CANCEL button to turn off the timer display.
Press the or button.
Every time the button is pressed, the display is switched in the order of:
0:00
0:10
0:20
...
(Units of ten minutes)
1:00
1:10
Every time the button is pressed, the display is switched in the order of:
0:00 23:50 23:40
...
(Units of ten minutes)
23:00 22:50
Set at 8:00.
Press the ON TIMER button.
The display changes from blinking to steady lighting and the setting is com-
plete.
The timer light (yellow) is on.
The operation stops if it is set during operation.
Changing of set time
Set a new time by using the ON-TIMER button.
•
Operation starts 5 to 60 minutes before the set time.
•
The timer light (yellow) goes out at the set time.
•
Make sure to press the button within 60 seconds from the last operation in step 2,
otherwise the setting is not completed.
•
The current time is not displayed during ON-TIMER operation.
NOTE
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