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1. Touch the System-Changeover button on the [System management] screen.
2.
Touch the ① Change mode button to select between [None], [Auto], and [Representative Group].
3. Save the ③ Save button on the [System-Changeover] screen.
The initial setting for the Representative Group is the group in a specific block with the smallest group number.
System-changeover
mode
Setting
None (default) Select this option so as not to use the System-Changeover function.
Auto
The operation modes (cooling/heating) will be changed-over based on the following:
Temperature differences between the preset temperature and the room temperature of
all indoor unit groups that are connected to a specific outdoor unit, AND the capacity of
each indoor unit in each group.
* The operation mode of the groups of units that are not operating, or the ones that are operating in the
Fan or Auto mode, will remain the same.
Representative
Group
The operation modes (Cooling/Heating) will be changed-over based on the temperature
difference between the preset temperature of the representative group and the room
temperature.
* When the air conditioning units in the Representative Group are not operating, or they are operating in
the Fan or Auto mode, the system-changeover function will work in the same way as when the
system-changeover mode is set to Auto.
When [Representative Group] is selected, the group that is
currently designated as the Representative Group will be
displayed.
* To designate a different group as the Representative Group, select
a new group on the screen that appears (shown right) when the
② Representative Group button is pressed, and then touch the OK
button.
Block No.
Displays the block number. All units
in each group are operated in the
same operation mode. The TC-24A
automatically creates blocks based
on the refrigerant pipe connection
information and the group setting
information on each unit.
Group list
Displays the number assigned to the indoor unit groups that are connected to
the outdoor units in a specific block. Select a representative group from this list
when the [Representative Group] is selected for the System-Changeover mode.
Operation mode
Displays the current
operation mode
Cooling:
Heating:
Display Block Information button
Displays the addresses of
the outdoor units and the
names of the groups in a
specific block.