13
The following symptoms do not indicate air
conditioner malfunction
•
HEATING OPERATION within 6 hours after the
power is supplied to the air conditioner.
Some models perform the following operation to
protect the devices.
If the HEATING OPERATION is performed within 6
hours after the power is supplied to the air
The above operation is performed not only at the
time of installation, but every time the power
circuit breaker is turned off/on.
For comfort heating, it is recommended not to turn
off the power circuit breaker during the HEATING
OPERATION.
1. THE AIR CONDITIONER DOES NOT OPERATE
• The air conditioner does not restart
immediately after the ON/OFF button is
pressed.
• The air conditioner does not restart
immediately when TEMPERATURE
SETTING button is returned to the former
position after pushing the button.
If the OPERATION lamp lights, the air
conditioner is in normal condition.
It does not restart immediately because a
safety device operates to prevent overload of
the air conditioner.
After approx. 3 minutes, the air conditioner
will turn on again automatically.
• The air conditioner does not start when
the display shows “
” and it
flashes for few seconds after pressing an
operation button.
This is because the air conditioner is under
centralized control.
Flashes on the display indicates that the air
conditioner cannot be controlled by the
remote controller.
• HEATING OPERATION within 6 hours
after the power is supplied to the air
conditioner.
Some models perform the following
operation to protect the devices.
If the HEATING OPERATION is performed
within 6 hours after the power is supplied to
the air conditioner, the indoor fan stops for
about 10 minutes during the outdoor unit
operation to protect the devices.
The above operation is performed not only at
the time of installation, but every time the
power circuit breaker is turned off/on.
9. NOT MALFUNCTION OF THE
AIR CONDITIONER
For comfortable use, do not turn off the
power circuit breaker during seasonal use of
the HEATING OPERATION.
• The outdoor unit stops.
This is because the indoor temperature has
reached the set temperature.
The indoor unit is in the FAN OPERATION.
COOLING OPERATION
(AUTOMATIC COOLING OPERATION):
Lower the set temperature.
HEATING OPERATION
(AUTOMATIC HEATING OPERATION):
Raise the set temperature.
The operation starts after a while when the
air conditioner is in normal condition.
• The remote controller displays “
”,
and airflow stops.
This is because the air conditioner
automatically switches to the DEFROST
OPERATION to prevent a decrease in
heating capacity when frost on the outdoor
unit increases.
After maximum 10 minutes, the air conditioner
returns to its original operation.
2. THE OPERATION SOMETIMES STOPS
• The remote controller displays “U4” and
“U5”, and the operation stops. However, it
will restart in a few minutes.
This is because communication between the
indoor and outdoor units or indoor units and
remote controllers is shut off and stops the
operation due to noise caused by devices
other than the air conditioner.
When the electrical noise decreases, the air
conditioner automatically restarts.
3. THE FAN SPEED IS DIFFERENT FROM THE
SETTING
• Pressing the fan speed control button
does not change the fan speed.
During the COOLING OPERATION, the low
fan speed or a gentle wind is used to prevent
the discharge of melt water.
During the DEFROST OPERATION
(HEATING OPERATION), the wind from the
air conditioner stops to prevent air discharge
directly toward your body.
After a while, the fan speed can be changed.
(The fan speed cannot be set for the
PROGRAM DRY OPERATION.)
When the room temperature reaches the set
temperature during the HEATING
OPERATION, the outdoor unit stops and the
indoor unit goes into gentle wind.
It takes some time until the fan speed
changes. Raise the set temperature. After a
while, the fan speed changes.
conditioner, the indoor fan stops for about 10 minutes
during the outdoor unit operation to protect the devices.
