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3) Cooling/Heating operation
The operations are performed in the following parts by
controls according to cooling/heating conditions.
1) Receiving the operation ON signal
of the remote controller, the cooling
or heating operation signal starts
being transferred form the indoor
controller to the outdoor unit.
2) At the indoor unit side, the indoor
fan is operated according to the
contents of “2. Indoor fan motor
control” and the louver according to
the contents of “9. Louver control”,
respectively.
3) The outdoor unit controls the
outdoor fan motor, compressor,
pulse motor valve and 4-way valve
according to the operation signal
sent from the indoor unit.
*1. The power coupler of
4-way valve is usually turned on,
and it is turned off during defrost
operation. (Only in heating)
Item
1. Basic
operation
Operation flow and applicable data, etc.
2) Operating mode selection when performing 2-room
operation
Description
1) The outdoor unit operating mode
conforms to the instructions of the
indoor unit that was pressed first.
2) When combined operation consist-
ing of cooling (dry) and heating, fan
(air purification) and heating, or
cleaning operation and heating is
performed, operation conforms to
the instructions of the indoor unit
that was pressed first as shown in
the left table.
3) The indoor fan stops for the indoor
unit that was pressed last and which
instructions are ignored.
Operation ON
Setup of remote controller
Indoor fan motor control
Louver control
Compressor revolution control
Outdoor fan motor control
4-way valve control
In cooling operation: OFF
In heating operation: ON
Pulse motor valve control
Indoor unit
control
Sending of
operation
command signal
Outdoor unit
control
[ ]
No.
Indoor unit Set operating mode
Actual indoor unit
operation
Actual outdoor
unit operation
1
Indoor unit pressed Cooling (dry) Cooling (dry)
Cooling
Indoor unit pressed last Cooling (dry) Cooling (dry)
2
Indoor unit pressed Heating Heating
Heating
Indoor unit pressed last Heating Heating
3
Indoor unit pressed
Fan (solo air
purification)
Fan (solo air
purification)
Stopped
Indoor unit pressed last
Fan (solo air
purification)
Fan (solo air
purification)
4
Indoor unit pressed
Fan (solo air
purification)
Fan (solo air
purification)
Cooling
Indoor unit pressed last Cooling (dry) Cooling (dry)
5
Indoor unit pressed Cooling (dry) Cooling (dry)
Cooling
Indoor unit pressed last
Fan (solo air
purification)
Fan (solo air
purification)
6
Indoor unit pressed Cooling (dry) Cooling (dry)
Cooling
Indoor unit pressed last Heating Fan stopped
7
Indoor unit pressed Heating Heating
Heating
Indoor unit pressed last Cooling (dry) Fan stopped
8
Indoor unit pressed
Fan (solo air
purification)
Fan (solo air
purification)
Stopped
Indoor unit pressed last Heating Fan stopped
9
Indoor unit pressed Heating Heating
Heating
Indoor unit pressed last
Fan (solo air
purification)
Fan stopped
10
Indoor unit pressed Cleaning operation Cleaning operation
Stopped
Indoor unit pressed last Cleaning operation Cleaning operation
11
Indoor unit pressed Cleaning operation Cleaning operation
Cooling
Indoor unit pressed last Cooling (dry) Cooling (dry)
12
Indoor unit pressed Cooling (dry) Cooling (dry)
Cooling
Indoor unit pressed last Cleaning operation Cleaning operation
13
Indoor unit pressed Cleaning operation Cleaning operation
Stopped
Indoor unit pressed last
Fan (solo air
purification)
Fan (solo air
purification)
14
Indoor unit pressed
Fan (solo air
purification)
Fan (solo air
purification)
Stopped
Indoor unit pressed last Cleaning operation
15
Indoor unit pressed Cleaning operation Cleaning operation
Cleaning operation
Stopped
Indoor unit pressed last Heating Fan stopped
16
Indoor unit pressed Heating Heating
Heating
Indoor unit pressed last Cleaning operation Fan stopped