(Twin operation setting)
- The master units and slave units are set automatically when the power is turned on. At this time,
the indoor unit which is connected to the remote control unit becomes the master unit. / (If
automatic setting is not possible, carry out the settings manually.)
- Install the remote control unit to the master unit. (It cannot be connected to slave units.)
- The remote control thermostat can also be set.
- Optional circuit boards can only be installed to the master unit.
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