Daikin REYQ-AATJA, Service Manual, Page: 248 / 495

Field Setting from Outdoor Unit SiUS372201EA
241 Part 5 Field Settings and Test Operation
Note(s)
This setting may result in a longer reaction time to large load variations.
[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/Sub setting Multi
When 2 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 Sub unit 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 “Sub” (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.
[2-62]: Cooling and heating capacity learning control
Default value: 0.
Value
[2-62]
Description
0 (default) OFF
1 Cooling adjustment
2 Heating adjustment
3 Cooling and heating adjustment
Adjust cooling and heating system operation to achieve stable capacity.
[2-64]: Eco mode invalid setting
Used to make setting of Eco mode invalid. When this configuration is set, it is not
possible to turn Eco mode ON/OFF using external control adaptor or other setting.
Default value: 0.
Value
[2-64]
Eco mode invalid setting
0 (default) Eco mode active
1 Te fix control
2 Tc fix control
3 Te & Tc fix control
[2-71]: Branch selector switching time
Default value: 0.
Used for changing branch selector switching time.

All piping length between branch selector unit and indoor units should be less than
9.7 m (32 ft).