Daikin VRV II RXYQ8MY1K Service Manual page 129

Field Setting
3.2.2 Cool / Heat Mode Switching
There are the following 4 cool/heat switching modes.
Set Cool / Heat Separately for Each Outdoor Unit System by Indoor Unit Remote Controller
118
Set cool/heat separately for each outdoor unit system by indoor unit remote controller.
Set cool/heat separately for each outdoor unit system by cool/heat switching remote
controller.
Set cool/heat for more than one outdoor unit system simultaneously in accordance with
unified master outdoor unit by indoor unit remote controller.
Set cool/heat for more than one outdoor unit system simultaneously in accordance with
unified master outdoor unit by cool/heat switching remote controller.
It does not matter whether or not there is outdoor - outdoor unit wiring.
Set outdoor unit PC board DS1-1 to IN (factory set).
Set cool/heat switching to IND (individual) for "Setting mode 1" (factory set).
Si39-502A
Test Operation