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4. CENTRAL
CONTROL METHOD
Refrigerant system 1
Refrigerant system 2
Notes Group Information Store
The following show the restrictions on group information store.
• A maximum of 64 groups can be formed in one system.
• A maximum of 64 remote control groups can be stored per group.
• Since the remote control group is the smallest control unit and can not be broken up, the group
must be made up with complete remote control groups.
The following show examples of group formation. There are some restrictions on operating mode, on
display for the following occasions.
• Group formed with the indoor units in two refrigerant systems.
When part of indoor units exist in cooling & heat pump type refrigerant system, certain operating
mode of the group can not be carried out even if the operating mode is shown on the LCD. In
addition, the operating mode is limited owing to cooling / heating priority setting.
• Overlapping groups.
The operating condition of the indoor units overlapped in the group is determined by the control
signal last sent to indoor units.
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