Daikin VRV RXYQ72-384XAYCA, Service Manual

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Field Settings for Outdoor Unit SiUS342004EB
189 Part 5 Field Settings and Test Operation
[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 3: master module is disabled permanently.
[2-39]: Emergency operation “Slave 1”
To disable permanent compressor operation of “Slave 1” unit of a multi outdoor
system: Default value: 0. Compressor operation enabled.
Field setting:

Set 3: Slave 1 module is disabled permanently.
[2-40]: Emergency operation “Slave 2”
To disable permanent compressor operation of “Slave 2” unit of a multi outdoor
system: Default value: 0. Compressor operation enabled.
Field setting:

Set 3: Slave 2 module is disabled permanently.
Combination table setting 2-38, 2-39 and 2-40:
Disable
Master/
individual
Slave 1 Slave 2
Module 2-38-3 2-39-3 2-40-3
[2-42]: Outdoor fan noise countermeasure
Change fans rotational speed and reduce noise by the interference of air blow noise
between outdoor units.
Default value: 0
Field setting:

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).

3: forced “Slave 2” (only Q1Q2 terminals should be wired to “Master” module).
[2-60]: Gas furnace setting
Default value: 0.
When a gas furnace is connected, the setting [2-60] has to be changed to 1.