Daikin VRV RXYQ72-384XAYCA Service Manual page 188

Field Settings for Outdoor Unit
2.5.3 Details of Setting Mode 2
Mode 2 is used to change the field settings of the system. Consulting the current field setting value
and changing the current field setting value is possible.
In general, normal operation can be resumed without special intervention after changing field
settings.
Some field settings are used for special operation (e.g. 1 time operation, recovery/vacuuming
setting, adding refrigerant setting, etc.). In such a case, it is required to abort the special operation
before normal operation can restart. It will be indicated in below explanations.
[2-0]:
[2-1]:
DS2, DS1
External
Outdoor
control adaptor
unit group
for outdoor unit
master No.0
No.0
DS2, DS1
External
Outdoor
control adaptor
unit group
for outdoor unit
master No.2
No.2
181
Cool/Heat selection setting
Cool/Heat selection setting is used in case the optional Cool/Heat selector
(KRC19-26A) is used. Depending on the outdoor unit setup (single outdoor unit setup or
multi outdoor unit setup), the correct setting should be chosen. More details on how to
use the Cool/Heat selector option can be found in the manual of the Cool/Heat selector.
Default value: 0.
 0: Each individual outdoor unit can select Cool/Heat operation (by Cool/Heat selector
if installed).
 1: Master unit decides Cool/Heat operation when outdoor units are connected in
multiple system combination
 2: Slave unit for Cool/Heat operation when outdoor units are connected in multiple
system combination
Change [2-0] to 0, 1 or 2 in function of required functionality.
Cool/Heat unified address
Address for cool/heat unified operation.
 When multiple heat pump systems need to change over together between cooling
and heating (example multiple systems serve indoor units in landscape area). Per zone
the optional PCB DTA104A61/62 needs to be installed. Recommended location is in
one of the VRV indoor units belonging to the system that will be set as "Master cool/heat
unit" (field setting 2-0-1).
 The address set to the multiple systems need to operate as a zone, should be same
as the address set by the DIP switches on the related optional PCB DTA104A61/62.
C/H group address
Outdoor Outdoor
unit group unit group
slave No.0 slave No.0
C/H group address
Outdoor
Outdoor
unit group unit group
slave No.2
slave No.2
DS2, DS1
C/H group address
External
Outdoor
control adaptor
unit group
for outdoor unit
master No.1
No.1
DS2, DS1
C/H group address
External
Outdoor
control adaptor
unit group
for outdoor unit
master No.3
No.3
Part 5 Field Settings and Test Operation
SiUS342004EB
Outdoor
unit group
slave No.1
Outdoor
unit group
slave No.3