Daikin Aurora Series, Service Manual, Page: 145 / 333

SiUS341802E Field Setting from Outdoor Unit
Field Settings and Test Operation 132
[2-38]: Emergency operation “Master”
To disable permanent compressor operation: in case of single module or “Master” unit of a multi outdoor
system, this setting allows:
„
Default value: 0. Compressor operation enabled.
„
Field setting:
„
Set 1 or 3: compressor in this “Master” module is disabled permanent.
[2-39]: Emergency operation “Slave 1”
To disable permanent compressor operation of “Slave 1” unit of a multi outdoor system (RXYQ-TA):
„
Default value: 0. Compressor operation enabled.
„
Field setting:
„
Set 1 or 3: compressor in this “Slave 1” module is disabled permanent.
[2-40]: Emergency operation “Slave 2”
To disable permanent compressor operation of “Slave 2” unit of a multi outdoor system (RXYQ-TA):
„
Default value: 0. Compressor operation enabled.
„
Field setting:
„
Set 1 or 3: compressor in this “Slave 2” module is disabled permanent.
Combination table setting 2-38, 2-39 and 2-40:
[2-42]: Outdoor fan noise countermeasure
Change fans rotational speed and reduce noise by the interference of air blow noise between outdoor
units.
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Default value: 0
„
Field setting:
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Mode A: 1
„
Mode B: 2
[2-49]: Height difference setting
Default value: 0.
In case the outdoor unit is installed in the highest position (indoor units are installed on a lower position
than outdoor units) and the height difference between the lowest indoor unit and the outdoor unit
exceeds 50 m(164 ft), the setting [2-49] has to be changed to 1.
[2-51]: Master/Slave setting Multi
When 2 or 3 modules are installed as a multi-outdoor (by common refrigerant piping and wiring by
terminals Q1Q2) configuration is automatically detected. In certain cases, the sequence of the slave
units need to be set manually (in case of AIRNET monitoring).
„
Default value: 0. Automatic detection.
„
Field setting: ensure that the modules in a multi are set different status. Even some modules in a multi
are set manually to same status, U7 error will appear.
„
1: forced “Master” (F1F2/Ind terminals should be connected to indoor units).
„
2: forced “Slave 1” (only Q1Q2 terminals should be wired to “Master” module).
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3: forced “Slave 2” (only Q1Q2 terminals should be wired to “Master” module).
Disable Master/individual Slave 1 Slave 2
Module 2-38-1 or 2-38-3 2-39-1 or 2-39-3 2-40-1 or 2-40-3