System-Changeover Of Y Series - Mitsubishi Electric AG-150A Instruction Book

6-3 System-Changeover of Y series

Click on [Function2]-[Auto-changeover] in the menu to open the auto-changeover screen and make necessary
settings to switch the operation mode between cooling and heating automatically of the indoor units connected
to the same outdoor unit. Set the change over mode and the target units.
Please use this function when performing heating operation in the morning and cooling operation in the
afternoon on air conditioners that either of cooling or heating operation is possible (Y series). The operation
mode changes automatically without the need of operating all remote controllers.
Note: If PAC-YG50ECA Expansion Controllers are connected, Expansion Controller system selection buttons will appear. Select
the desired Expansion Controller (EC1, EC2, or EC3), and make the settings for each system. Make the settings with the
Expansion Controllers properly connected.
Note: The operation mode (cooling or heating) is set by the majority decision in consideration of performance value of each unit,
or on the basis of the operation mode of the representative group. Therefore, some rooms may be hotter or colder than
others.
Note: If the user logs in as a building manager, the operations may be prohibited.
Note: Set the indoor unit operation mode to [Auto] on the Auto-Changeover models (R2 series). (It is not necessary to change the
mode on this screen.)
Note: When connecting AG-150A controllers by connecting an Expansion Controller to the system, auto-changeover settings
should be made only on one of the AG-150A controllers.
Target outdoor units
The M-NET address of the
outdoor unit is displayed here.
Changeover mode
The changeover mode is
displayed here.
Refresh
Read setting data from AG-150A.
(1) Select the change mode of the target outdoor unit. When selecting the representative group mode, select
one representative group among the member groups.
Change mode
None
Averaging
Representative Group
(2) Click [Save Settings] to send setting data to the AG-150A.
Table 6-1 Change Mode List
Select this when the function is not used.
The operation mode (cooling or heating) is set and changed by the majority
decision in consideration of the set temperature, the room temperature
difference of all groups connected to the target outdoor unit, and capacity
value of each indoor unit.
Changes the set temperature of the representative group, and the operation
mode of the member group in accordance with the temperature difference.
37
Member group
Save settings
Content
Expansion Controller
system selection buttons
Click to select the system to be set.
The group name that is
connected to the outdoor unit
is displayed here.
When the representative
group mode is selected, select
the representative group
among these member groups.
Send setting data to AG-150A.