Sanyo Big PACi 18 Series Technical Data & Service Manual page 253

Item code
03
Central control address
04
Operating mode priority change Note (1)
NOTE
(1) Explanation of operation mode priority change
Enabled only in 2WAY MULTI heat-pump models.
<Function>
With indoor units that are installed in combination with an outdoor unit model where either heating or cooling
operation can be selected, the operating mode of the indoor unit that starts first takes priority. The first indoor
unit to operate can select any operating mode. When any mode other than fan mode is selected, then the
operating modes that cannot be selected are not displayed on all remote controllers that are subsequently
operated. "Operation change control in progress" is displayed, indicating that there are restrictions on the
operating modes that can be selected.
• Controlling the operating mode from a specific remote controller
− When there are multiple remote controllers in the same refrigerant system, it is possible to set one remote
controller as the priority remote controller (the remote controller which is given priority for selecting the
operating mode). (If 2 or more remote controllers are set as priority remote controllers, an alarm will occur at
the remote controllers, and operation will not be possible.)
− - When the priority remote controller is set to the operating mode for control, then all other remote controllers
can select only the permitted operating mode, regardless of whether the priority remote controller is operating
or stopped.
− - When a controlled remote controller is operated, "Operation change control in progress" is displayed.
Set mode at priority remote controller Modes that can be selected at other remote controllers
Cooling or dry
Heating
Fan
NOTE
There are other methods to avoid control in which the mode selected first takes priority.
Methods of remotely controlling the operating mode
(1) Use the central functions of a central control device.
7
(2) Use a remote control relay PCB at the outdoor unit.
Item
Set when using a central control device.
Used when setting the central control address manually from the
remote controller.
Cooling, dry, fan
Heating, fan
Whichever mode (heating/cooling) is selected first
Description
7-10