Note for Multi System
COOL / HEAT mode lock
The COOL / HEAT mode lock requires initial programming during installation. Please consult your authorized dealer for
assistance. The COOL / HEAT mode lock sets the unit forcibly to either COOL or HEAT mode. This function is convenient
when you wish to set all indoor units connected to the multi system to the same operation mode.
Priority room setting
The priority room setting requires initial programming during installation. Please consult your authorized dealer for assistance.
The room designated as the priority room takes priority in the following situations.
Operation mode priority
As the operation mode of the priority room takes precedence, the user can select a different operation mode from other •
rooms.
[Example]
Room A is the priority room in the examples.•
When COOL mode is selected in room A while operating the following modes in room B, C and D :
Operation mode in room B, C and D Status of room B, C and D when the unit in room A is in COOL mode
COOL or DRY or FAN
Current operation mode maintained
HEAT
The unit enters standby mode. Operation resumes when the room A unit stops operating.
AUTO
If the unit is set to COOL mode, operation continues. If the unit is set to HEAT mode, it enters
standby mode. Operation resumes when the room A unit stops operating.
Priority when POWERFUL operation is used
[Example]
Room A is the priority room in the examples.•
The indoor units in rooms A, B, C and D are all operating. If the unit in room A enters POWERFUL operation, operation
capacity will be concentrated in room A. In such a case, the COOL (HEAT) effi ciency of the units in room B, C and D may
be slightly reduced.
Priority when using OUTDOOR UNIT QUIET operation
[Example]
Room A is the priority room in the examples.•
Just by setting the unit in room A to QUIET operation, the air conditioner starts OUTDOOR UNIT QUIET operation.
You don’t have to set all the operated indoor units to QUIET operation.
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