Daikin RXYQ72 Serivce Manual page 102

SiUS39-601
Set Cool / Heat for More Than One Outdoor Unit System Simultaneously in Accordance with Unified
Master Outdoor Unit by Indoor Unit Remote Controller
Test Operation
Install the external control adapter for outdoor unit on either the outdoor-outdoor, indoor-
outdoor, or transmission line.
Set outdoor unit PC board DS1-1 to "Indoor" (factory set).
In setting mode 1, set the outdoor unit you want to give cool/heat selection permission to as the
group master, and set the other outdoor units as group slave units.
Set the external control adapter for outdoor unit SS1 to BOTH (factory set) or C/H, and SS2 to
OFF (factory set).
Multi outdoor units connection
Field Setting
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