Daikin VRV III RXYQ5-54PY1 Service Manual page 200

Si34-601A
Set Cool / Heat for More Than One Outdoor Unit System Simultaneously in Accordance with Unified
Master Outdoor Unit by Cool / Heat Selector
Test Operation
Install the external control adapter for outdoor unit on either the outdoor-outdoor, indoor-
outdoor transmission line.
Mount the COOL/HEAT selector to the master outdoor unit for the unified control.
Set the DS1-1 on the PC board of master outdoor unit to OUT.
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 outdoor unit external control adapter SS1 to BOTH (factory set) or C/H, and SS2 to
OFF (factory set).
Multi outdoor units connection
Field Setting
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