Daikin VRV RXYQ72-384XAYCA, Service Manual

Page: 162 / 419

Field Settings for Indoor Unit SiUS342004EB
155 Part 5 Field Settings and Test Operation
1.3.18 Airflow Setting when Heating Thermostat is OFF
This setting is used to set airflow when heating thermostat is OFF.
If the airflow setting when thermostat is OFF is set to 03: OFF, the air in the indoor unit will be
stagnant and suction air thermistor may not detect room temperature correctly, resulting in
problems that thermostat will not be ON easily.
Use optional remote sensor in such conditions, or set the field setting 10 (20)-2 to 03 (only remote
controller thermistor).
 When thermostat OFF airflow volume up mode is used, careful consideration is required before
deciding installation location.

: Factory setting
1.3.19 Automatic Mode Differential
This setting makes it possible to change differential values for mode selection while in automatic
operation mode, only when the wireless remote controller or any central remote controller is
connected.

: Factory setting
The automatic operation mode setting is made by the use of the operation mode selector button.
1.3.20 Auto Restart after Power Failure

: Factory setting
When the Auto Restart after Power Failure setting is turned OFF, all the units will remain OFF after
power failure, or after the main power supply is restored. When this setting is turned ON (factory
setting), the units that were operating before the power failure will automatically restart operation
after power failure, or after the main power supply is restored.
Due to the aforementioned, when the Auto Restart after Power Failure setting is ON, be careful for
the following situations that may occur.
Mode No. First Code No. Second Code No. Contents
12 (22) 3
01

LL tap

02 Set fan speed
03 OFF
Mode No.
First Code
No.
Second Code No.
01

02 03 04 05 06 07 08
12 (22) 4
0°C
(0°F)

1°C
(1.8°F)
2°C
(3.6°F)
3°C
(5.4°F)
4°C
(7.2°F)
5°C
(9.0°F)
6°C
(10.8°F)
7°C
(12.6°F)
Mode
No.
First
Code No.
Second
Code No.
Contents
12 (22) 5
01 OFF
02

ON

1. The air conditioner will start operation suddenly after power failure,
or when the main power supply is restored. The user might be surprised
and wonder why the air conditioner turned ON suddenly.
2. During maintenance, if the main power supply is turned OFF while the
units are in operation, the units will automatically start operation
(the fan will rotate) after the power supply is restored due to completion
of the maintenance work.
Caution