14
10. MAINTENANCE
(FOR SERVICE PERSONNEL)
Refer to the operation manual attached to the
indoor unit.
11. NOT MALFUNCTION OF THE
AIR CONDITIONER
Refer to the operation manual attached to the
indoor unit.
And the following symptoms do not
indicate air conditioner malfunction
I
. THE AIR CONDITIONER DOES NOT
OPERATE
•
The receiving tone of the indoor unit
makes a triple beeping sound (normally,
“beep-beep”).
This is because the air conditioner is under
centralized control.
•
After the HEATING OPERATION is started,
the DEFROST OPERATION LAMP located
on the indoor unit lights up.
The indoor fan runs to discharge a gentle
wind automatically until the temperature
inside the air conditioner reaches a certain
level. At this time, the DEFROST
OPERATION LAMP on the light receiving
unit indicator lights. Leave it as it stands and
wait for a while.
•
The system does not restart immediately
after the ON/OFF button is pressed.
If the OPERATION lamp lights, the system is
in normal condition. It does not restart
immediately because a safety device
operates to prevent overload of the system.
After 3 minutes, the system will turn on again
automatically.
•
The system does not restart immediately
when TEMPERATURE SETTING button
is returned to the former position after
pushing the button.
It does not restart immediately because a
safety device operates to prevent overload of
the system.
After 3 minutes, the system will turn on again
automatically.
•
If the defrost lamp on the indoor unit’s
display is lit when heating is started.
This indication is to warn against cold air
being blown from the unit.
There is nothing wrong with the equipment.
•
The outdoor unit stops.
Because the room temperature reaches to
the set temperature. The indoor unit goes
into fan operation.
II
. COOLING AND HEATING OPERATIONS
CAN NOT BE SWITCHED
•
The receiving tone of the indoor unit
makes a long beeping sound.
An unavailable mode was set for the indoor
unit under operation changeover control.
III
. THERE IS NO DISPLAY OR ALL PARTS
ARE DISPLAYED
•
When a button on the remote controller
is pressed.
The batteries have run out.
IV
. THE UNIT STOPS ONCE IN A WHILE
•
The remote controller indicates “ ”
and “ ”, the unit stops. Within several
minutes the unit restarts.
Due to electrical noise other than that from
the air conditioner, the communication
between the units is cut off and the unit stops.
When the noise is gone, the unit automatically
restarts.
V
. AIRFLOW RATE CANNOT BE OBTAINED
AS SET
•
Even if the airflow rate adjusting button is
pressed, the airflow rate does not change.
When the room temperature reaches the
indoor unit set temperature, the outdoor unit
stops and the airflow rate of indoor unit
drops to the minimum.
This is to avoid the cold air from getting in
contact with the people in the room.
VI
. AIR DISCHARGE DIRECTION IS NOT
AS SET
•
The remote controller indication and the
air discharge direction is not the same.
Air discharge direction swing is impossible.
Because it is controlled by microcomputer.
Refer to “
AIRFLOW DIRECTION ADJUST
”
on page 9, 10.
VII
. ONLY A PART OF INDICATION SHOWS
•
Even if the unit is operated, only the
operation indication shows, or even if the
indication shows, soon after, the indication
other than that for operation disappears.
The corresponding indoor unit is that for
multi-system and the remote controller is
set to the multi-system.
