
En-5
SYSTEM OPERATION
There are different ways the unit can be controlled. (Consult the remote controller operating instructions for details on setting
the operating functions.)
<Spare Remote Controller>
Two remote controllers can be connected to one air condi-
tioner unit. The air conditioner operation contents are the
remote controller setting contents set later.
(Both remote controllers show the same display.)
<Control Several Units with just one Remote Controller>
One remote controller can control up to 16 air conditioners.
All the air conditioners can be operated with the same set-
ting.
Unit No.1 Unit No.2 Unit No.16
OPERATING TIPS
*Heating Performance
●This air conditioner operates on the heat-pump principle,
absorbing heat from outdoor air and transferring that heat
indoors. As a result, the operating performance is reduced
as outdoor air temperature drops. If you feel that insuffi-
cient heating performance is being produced, we recom-
mend you use this air conditioner in conjunction with
another kind of heating appliance.
●Heat-pump air conditioners heat your entire room by
recirculating air throughout the room, with the result that
some time may be required after first starting the air con-
ditioner until the room is heated.
*Microcomputer-controlled Automatic Defrosting
When using the Heating mode under conditions of low out-
door temperature and high humidity, frost may form on the
outdoor unit, resulting in reduced operating performance.
In order to prevent this kind of reduced performance, this
unit is equipped with a Microcomputer-controlled Automatic
Defrosting function. If frost forms, the air conditioner will
temporarily stop, and the defrosting circuit will operate
briefly (for about 4 to 15 minutes).
During Automatic Defrosting operation, will be
displayed on the remote controller.
Instructions relating to heating (*) are applicable only to “HEAT & COOL MODEL”(Reverse Cycle).
Operation and Performance
Cooling/Heating Priority (HEAT PUMP MODEL only)
●If another indoor unit in the same system is already oper-
ating in the cooling mode or dry mode, heating mode
settings cannot be performed.
●If another indoor unit in the same system is already oper-
ating in the heating mode, cooling mode or dry mode
settings cannot be performed.
Oil Recovery Operation
Periodically, the oil recovery operation is performed in or-
der to return compressor oil to the outdoor unit. Operation
is stopped during this oil recovery operation. During oil re-
covery operation, will be displayed on the remote
controller.
Setting Restriction
When is displayed there are functions for which
settings cannot be made.
When a button is pushed to change a restricted setting,
will flash.
●Should the power supply to the air conditioner be inter-
rupted by a power failure, the air conditioner will restart
automatically in the previously selected mode once the
power is restored.
●There are functions that are enabled/disabled by DIP
switch settings on the indoor unit.
AUTO Restart
In Event of Power Interruption
●Use of other electrical appliances (electric shaver, etc.) or
nearby use of a wireless radio transmitter may cause the
air conditioner to malfunction. In this event, temporarily
turn off the circuit breaker, and turn on it again, then use
the remote controller to resume operation.
9371069012-02_OM_en.p65 9/10/09, 1:41 PM5