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7-3-3. System-changeover
The System-changeover function switches the operation modes of the indoor units connected to the same outdoor
unit between cooling and heating based on the room temperature and the set temperature. Click [Functions 2] in the
menu bar, and then click [System-changeover] to access the System-changeover settings screen.
The System-changeover function is available only on the Y series of outdoor units, whose operation modes do not
include the Auto mode. Use this function to operate the air conditioning units in the heating mode in the morning
and in the cooling mode in the afternoon. The operation mode of all indoor units will automatically be switched,
eliminating the need to switch the operation mode manually from the remote controllers.
Note: Because the operation mode is selected based on the demands of the representative group or of the majority of the groups,
not all areas may be air conditioned to the optimum temperature.
Note: The System-changeover settings may not be accessible if logged in as a building manager.
Note: If the outdoor unit is an R2 series, whose operation modes include the Auto mode, use the Auto mode instead of the System-
changeover function to switch the operation mode automatically.
(1) Select the Change Mode [None], [Averaging], or [Representative Group], referring to the table below.
If [Representative Group] is selected, also select a representative group from among the groups on the
right.
Table: Change Mode
Change Mode Content
None System-changeover function will not be used.
Averaging
The operation mode (cooling or heating) will be determined and switched every 15
minutes based on the demands of the majority of all groups connected to the outdoor
unit, taking into consideration the capacity of each indoor unit and the temperature
differences between the set temperatures and room temperatures.
Representative Group
The operation mode (cooling or heating) will be switched based on the temperature
difference between the set temperature and the room temperature of the
representative group.
(2) Click [Save Settings] to save the settings.
Target outdoor unit
The M-NET address of the
outdoor unit appears.
Change Mode
Refresh
Click to import the settings
from AE-200/AE-50/EW-50.
Groups
The names of the groups
that are connected to the
outdoor unit appear.
When the [Representative
Group] mode is selected,
select the representative
group from among these
groups.
Save Settings
Click to save the changes
made.
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