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11. GENERAL INFORMATION
■ Heating performance
This air conditioner operates on the heat-pump principle, absorbing
heat from air outdoors and transferring that heat to the indoor unit. As a
result, the operating performance is reduced as outdoor air temperature
drops.
If you feel that the heating performance is insufficient, we recommend
you to use this air conditioner in conjunction with other kinds of heating
appliance.
■ Automatic defrosting operation
When outdoor temperature is very low with high humidity, frost may
form on the outdoor unit during the heating operation, and it could
reduce the operating performance of the product.
For frost protection, a microcomputer-controlled automatic defrost
function is equipped in this air conditioner.
If frost forms, the air conditioner will temporarily stop, and defrost circuit
will operate briefly (maximum of 15 minutes.)
[ ] indicator on the indoor unit blinks during this operation.
If frost forms on the outdoor unit after the Heating operation, the outdoor
unit will stop automatically after it operates for a few minutes. Then the
Automatic defrosting operation starts.
■ Auto-restart function
In event of power interruption such as a blackout, the air conditioner
stops once. But it restarts automatically and performs previous operation
when the power supply is resumed.
If any power interruption occurs after the timer is set, counting down of
the timer will be reset.
After the power supply is resumed, [
blinks to notify you that there has been a timer fault. In such a case,
reset the clock and timer settings.
■ Malfunctions caused by other electrical
devices
Use of other electrical appliances such as an electric shaver or nearby
use of a wireless radio transmitter may cause the malfunction of the air
conditioner.
If you encounter such a malfunction, turn off the circuit breaker once.
Then turn it on again, and resume operation by using the remote
controller.
■ Indoor unit temperature and humidity range
Permissible ranges of temperature and humidity are as follows:
Indoor temperature
Cooling/Dry
Heating
Indoor humidity
*1) If the air conditioner is used continuously for many hours, water may
condense on the surface and drip.
• If the unit is operated under the conditions except the permissible
temperature range, the air conditioner operation may stop because
of the automatic protection circuit working.
• Depending on the operating conditions, the heat exchanger may
freeze, causing water leakage or other malfunction (in the Cooling
or Dry mode).
■ Other information
• Do not use the air conditioner for any purpose other than room
cooling/dry, room heating or fan.
• For the permissible ranges of temperature and humidity for the
outdoor unit, refer to the outdoor unit installation manual.
En-9
] indicator on the indoor unit
[°C]
18 to 32
[°C]
16 to 30
1)
[%]
80 or less *
12. OPTIONAL PARTS
12.1. Wired remote controller
The optional wired remote controller can be used.
You can use wired and wireless remote controller together.
However, some functions of the wireless remote controller are restricted.
If you set the restricted functions, beeping sound will be heard, [ ], [
and [
] indicator on the indoor unit will blink.
<Restricted functions for wireless remote controller>
When using together with wired remote controller (2-wired type)
• Powerful operation
• Outdoor Unit Low Noise operation
• 10 °C Heat operation
You can use wired remote controller and wireless LAN control
(optional).
However, some operations from the mobile app are restricted.
Multiple remote controller
You can connect two wired remote controllers to one air conditioner.
Either remote controller can control the air conditioner.
However, the timer functions cannot be used by the secondary unit.
Group control
One remote controller can control up to 16 air conditioners. All of the air
conditioners will be operated with the same settings.
You cannot use group control and wireless LAN control together.
12.2. Wireless LAN control
The optional wireless LAN control can be used.
12.3. Multi-type air conditioner
This indoor unit can be connected to a multi-type outdoor unit.
The multi-type air conditioner allows multiple indoor units to be
operated in multiple locations. The indoor units may be operated
simultaneously, in accordance with their respective output.
Simultaneous Use of Multiple Units
● When using a multi-type air conditioner, the multiple indoor units can
be operated simultaneously, but when 2 or more indoor units of the
same group are operated simultaneously, the heating and cooling
efficiency 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 heating, it is recommended that they
be used in conjunction with other auxiliary space heaters, as required.
● Seasonal and outdoor temperature conditions, the structure of
the rooms and the number of persons present may also result in
differences of operating efficiency. We recommend that you try various
operating patterns in order to confirm 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 1 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 operating modes.
If the indoor unit is instructed to do an operating mode that it cannot
perform, [ ] indicator on the indoor unit will flash (1 second on, 1 sec-
ond off) and the unit will go into the standby mode.
Heating mode and Cooling mode (or Dry mode)
Heating mode and Fan mode
],
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