Daikin RXYQ5-48MAY1 Service Manual page 112

Si39-407
• For RXYQ14MA and 16MA, if the INV compressor is set to operation prohibition mode, only a
single STD compressor will operate for the convenience of oil equalization.
• For RXYQ14MA and 16MA, only the STD1 compressor cannot be put into operation
prohibition mode for the convenience of oil equalization.
• For the system with a single outdoor unit (RXYQ8MA to 16MA), automatic backup operation is
not functional.
5.2.3 In The Case of Multi-Outdoor-Unit System (RXYQ18MA to 48MA)
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.)
• In order to set the MASTER to operation prohibition
mode, set No. 38 of Setting mode 2 to "MASTER
OPERATION PROHIBITION".
• In order to set the SLAVE 1 to operation prohibition
mode, set No. 39 of Setting mode 2 to "SLAVE 1
OPERATION PROHIBITION".
Function
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.
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
In order to forcedly clear the automatic backup operation, reset the power supply with the
outdoor unit in the stopped state.
∗ Discriminate the operating status of the master unit/slave units through the following LED
display.
LED display (7:ON
H1P---H7P H8P
Master:
77 7777777 7777 7
Slave 1: 7777777 7777777 9 9
Slave 2:
7777777 7 7777777 7
(Factory set)
(Procedure)
(1) Press and hold the PAGE button (BS1) for a period
of 5 seconds or more.
(2) Press the OPERATION button (BS2) 38 times.
(3) Press the CHECK button (BS3) once.
(4) Press the OPERATION button (BS2) once.
(5) Press the CHECK button (BS3) twice.
(6) Press the PAGE button (BS1) once.
(Procedure)
(1) Press and hold the PAGE button (BS1) for a period
of 5 seconds or more.
(2) Press the OPERATION button (BS2) 39 times.
(3) Press the CHECK button (BS3) once.
(4) Press the OPERATION button (BS2) once.
(5) Press the CHECK button (BS3) twice.
(6) Press the PAGE button (BS1) once.
:OFF :Blink)
7 7 9 9
LED display (7:ON
H1P---H7P
7777777 777777
7777 77777 7
777777 777779 9
77777 77779 9 7 7
7777777 777777
7777777 77
LED display (7:ON
H1P---H7P
7777777 777777
7777 77777
777777 777779 9
77777 77779 9 7 7
7777777 777777
77 7777777
Other Control
:OFF :Blink)
7 7 9 9
(Factory set)
7777
:OFF :Blink)
7 7 9 9
(Factory set)
7777
101