Daikin REYQ72 Serveice Manual page 77

Other Control
5.2.3 In The Case of Multi-Outdoor-Unit System (REYQ144, 168, 192MTJU)
Automatic backup operation
With multi-outdoor-unit system, if a certain outdoor unit system malfunctions (i.e., the system
stops and indoor unit remote controller displays the malfunction), by resetting the system with
the indoor unit remote controller, the applicable outdoor unit is inhibited from operating for 8
hours, thus making it possible to perform emergency operation automatically.
However, in the event any of the following malfunctions occurs, automatic backup operation can
be performed.
• Emergency operation with settings in service mode
∗
"Inhibition of operation" is set with each outdoor unit.
Make the following settings with the master unit. (Setting with the slave unit becomes disabled.)
∗
Discriminate the operating status of the master unit/slave units through the following LED
display.
• To inhibit the master unit from operating → Set
setting mode 2 from No. 38 to No. 2.
• To inhibit the slave unit from operating → Set
setting mode 2 from No. 39 to No. 2.
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Malfunctions under which automatic backup operation can be performed:
• E3, E4, E5, E7
• F3
• H7, H9
• J2, J3, J5, J6, J7, J9, JA, JC
• L3, L4, L5, L8, L9, LC
• U2, UJ
LED display (7:ON 7:OFF 9:Blink)
H1P---H7P H8P
Master:
77 7777777 7777 7
Slave:
7777777 9
(Factory set)
(Procedure)
(1) Press and hold the MODE button (BS1) for 5 sec. or
more.
(2) Press the SET button (BS2) 38 times.
(3) Press the RETURN button (BS3) once.
(4) Press the SET button (BS2) once.
(5) Press the RETURN button (BS3) twice.
(6) Press the MODE button (BS1) once.
(Procedure)
(1) Press and hold the MODE button (BS1) for 5 sec. or
more.
(2) Press the SET button (BS2) 39 times.
(3) Press the RETURN button (BS3) once.
(4) Press the SET button (BS2) once.
(5) Press the RETURN button (BS3) twice.
(6) Press the MODE button (BS1) once.
LED display (7:ON 7:OFF 9:Blink)
H1P---H7P
7777777
7777 77777
(Factory set)
7777779
7777797
7777777
7777777 77
LED display (7:ON 7:OFF 9:Blink)
H1P---H7P
7777777
7777 77777
(Factory set)
7777779
7777797
7777777
7777777 77
SiUS39-602
Function