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OPERATING TIPS

Multi-type Air conditioner

This indoor unit can be connected to a multi-type outdoor unit depending on model. The multi-type air conditioner allows multiple in-
door units to be operated in multiple locations. The indoor units may be operated simultaneously, in accordance with their respective
output.

●

Operation can be done in the following different operating

modes.

    Cooling mode and dry mode
    Cooling mode and fan mode
    Dry mode and fan mode

●

The operating mode (heating mode or cooling (dry) mode)

of the outdoor unit will be determined by the operating
mode of the indoor unit that was operated

rst. If the in-

door unit was started in fan mode, the operating mode of
the outdoor unit will not be determined.

For example, if indoor unit (A) was started in fan mode

and then indoor unit (B) was then operated in heating
mode, indoor unit (A) would temporarily start operation
in fan mode but when indoor unit (B) started operating in
heating mode, the OPERATION indicator lamp (green) for
indoor unit (A) would begin to

ash (1 second on, 1 sec-

ond off) and it would go into standby mode. Indoor unit (B)
would continue to operate in heating mode.

●

During use of the heating mode, the top of the indoor unit

may become warm, but this is due to the fact that cool-
ant is circulated through the indoor unit even when it is
stopped; it is not a malfunction.

Notice

Simultaneous Use of Multiple Units

●

When using a multi-type air conditioner, the multiple indoor

units can be operated simultaneously, but when two or
more indoor units of the same group are operated simul-
taneously, the heating and cooling ef

ciency will be less

than when a single indoor unit is used alone. Accordingly,
when you wish to use more than 1 indoor unit for cooling
at the same time, the use should be concentrated at night
and other times when less output is required. In the same
way, when multiple units are used simultaneously for heat-
ing, it is recommended that they be used in conjunction
with other auxiliary space heaters, as required.

●

Seasonal and outdoor temperature conditions, the struc-

ture of the rooms and the number of persons present may
also result in differences of operating ef

ciency. We rec-

ommend that you try various operating patterns in order to
con

rm the level of heating and cooling output provided by

your units, and use the units in the way that best matches
your family’s lifestyle.

●

If you discover that one or more units delivers a low level

of cooling or heating during simultaneous operation, we
recommend that you stop simultaneous operation of the
multiple units.

●

Operation cannot be done in the following different operat-

ing modes.

If the indoor unit is instructed to do an operating mode that

it cannot perform, the OPERATION indicator lamp (green)
on the indoor unit will

ash (1 second on, 1 second off)

and the unit will go into the standby mode.

Heating mode and cooling mode (or dry mode)
Heating mode and fan mode

●

During use of the heating mode, the outdoor unit will occa-

sionally commence the defrost operation for brief periods.
During the defrosting operation, if the user sets the indoor
unit for heating again, the defrosting mode will continue,
and the heating operation will begin after completion of
defrosting, with the result that some time may be required
before warm air is emitted.

AUTO Restart

In Event of Power Interruption

●

The power supply to the air conditioner is stopped by a

power interruption. The air conditioner will then restart auto-

matically in its previous mode when the power is restored.

●

If a power interruption occurs during TIMER operation, the tim-

er will be reset and the indoor unit will begin (or stop) operation

at the new time setting. In the event that this kind of timer fault

occurs, the TIMER Indicator Lamp will

ash (see Page. 3).