Daikin VRV II RXYQ8MY1K Service Manual page 131

Field Setting
Set Cool / Heat for More Than One Outdoor Unit System Simultaneously in Accordance with Unified
Master Outdoor Unit by Indoor Unit Remote Controller
120
Install the external control adapter for outdoor unit on either the outdoor-outdoor, indoor-
outdoor transmission line.
Set outdoor unit PC board DS1-1 to IN (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 outdoor unit external control adapter SS1 to BOTH (factory set) or C/H, and SS2 to
OFF (factory set).
Multi outdoor units connection
Si39-502A
Test Operation