Daikin VRV - WII Service Manual page 135

Field Setting
Set Cool / Heat for More Than One Outside Unit System Simultaneously in Accordance with Unified Master
Outside Unit by Indoor Unit Remote Controller
122
Install the outside unit external control adapter on either the outside unit-outside unit, indoor-
outside, or transmission line.
Set outside unit PC board DS1-1 to "Indoor" (factory set).
In setting mode 1, set the outside unit you want to give cool/heat selection permission to as the
group master, and set the other outside units as group slave units.
Set the outside unit external control adapter SS1 to Unified (factory set) or Cool, and SS2 to No
(factory set).
Multi outside units connection
SiUS30-604
Test Operation