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Item
1. Basic
operation
Operation flow and applicable data, etc.
2. Operating mode selection when performing 2-room operation
Description
1) The outdoor unit operation mode conforms to the instructions of the indoor unit that was pressed first.
2) When combined operation consisting of cooling (dry) and heating, fan 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 following table.
3) The indoor fan stops for the indoor unit that was pressed last and which instructions are ignored.
4) When three or four indoor units are operated concurrently, the priority is also given to operating
mode of the indoor unit which was pressed first as same as the case when two indoor units are
operated concurrently.
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 from 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 contr l
" 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 off, and it is turned on during defrost
operation. (Only in heating)
No.
Indoor unit
Set operating mode
Actual indoor unit operation
Actual outdoor unit operation
Pressed first
Cooling (dry)
Cooling (dry)
Pressed last
Cooling (dry)
Cooling (dry)
Pressed first
Heating
Heating
Pressed last
Heating
Heating
Pressed first
Fan only
Fan only
Pressed last
Fan only
Fan only
Pressed first
Fan only
Fan only
Pressed last
Cooling (dry)
Cooling (dry)
Pressed first
Cooling (dry)
Cooling (dry)
Pressed last
Fan only
Fan only
Pressed first
Cooling (dry)
Cooling (dry)
Pressed last
Heating
Fan stopped
Pressed first
Heating
Heating
Pressed last
Cooling (dry)
Fan stopped
Pressed first
Cleaning operation
Cleaning operation
Pressed last
Cleaning operation
Cleaning operation
Pressed first
Cleaning operation
Cleaning operation
Pressed last
Cooling (dry)
Cooling (dry)
Pressed first
Cooling (dry)
Cooling (dry)
Pressed last
Cleaning operation
Cleaning operation
Pressed first
Cleaning operation
Cleaning operation
Pressed last
Fan only
Fan only
Pressed first
Fan only
Fan only
Pressed last
Cleaning operation
Cleaning operation
Pressed first
Cleaning operation
Cleaning operation
Pressed last
Heating
Fan stopped
Pressed first
Heating
Heating
Pressed last
Cleaning operation
Fan stopped
Stopped
Heating
Cooling
Cooling
Stopped
Stopped
13
14
Cooling
Heating
Stopped
Cooling
Cooling
Cooling
Heating
Stopped
9
10
11
12
5
6
7
8
1
2
3
4
Operation On
Indoor unit control
Outdoor unit control
[In cooling operation: OFF, In heating operation: ON]
Pulse motor valve control
Setup of remote controller
Indoor fan motor control / Louver control
Sending of operation command signal
Compressor revolution control / Outdoor fan motor control / 4-way valve contro
l