Hitachi PSC-A32MN Installation And Operation Manual page 26

Operation
5.1.7.3 Sub Unit Registration
2 blocks with 16 groups each).
Indoor units without a remote control switch cannot be registered as sub units.
and then proceed to the new register.
5.1.7.4 Registration of a group (Main unit)
1 Select "Group Register" on the "Service Menu" screen.
(1)
N O T E
2 Select "Main Unit Register" on the "Group Register".
(2)
18 PMML0332A rev.0 - 05/2015