Daikin RXYQ72, Serivce Manual

Page: 66 / 273

SiUS39-601 Other Control
Function 55
5.2 Emergency Operation
If the compressor cannot operate, this control inhibits any applicable compressor or outdoor unit
from operating to perform emergency operation only with the operative compressor or outdoor unit.
5.2.1 Restrictions for Emergency Operation
• In the case of system with 1 outdoor unit installed, only when thermostats of indoor units having a
capacity of 50% or more of the outdoor unit capacity turn ON, the emergency operation is
functional. (If the total capacity of indoor units with thermostat ON is small, the outdoor unit cannot
operate.)
• If the emergency operation is set while the outdoor unit is in operation, the outdoor unit stops once
after pump-down residual operation (a maximum of 5 minutes elapsed).
5.2.2 In the Case of 1-Outdoor-Unit System
• Emergency operation with settings in service mode
∗
“Inhibition of operation” is set with each compressor.
• To inhibit INV compressor from operating
→
Set setting
mode 2 from No. 0 to No. 2.
(Procedure)
(1) Press and hold the MODE button (BS1) for 5 sec. or
more.
(2) Press the RETURN button (BS3) once.
(3) Press the SET button (BS2) one.
(4) Press the RETURN button (BS3) twice.
(5) Press the MODE button (BS1) once.
• To inhibit STD1 compressors from operating
→
Set
setting mode 2 from No. 19 to No. 2.
(Procedure)
(1) Press and hold the MODE button (BS1) for 5 sec. or
more.
(2) Press the SET button (BS2) 19 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.
Caution
"For making a compressor unable to operate due to malfunction, etc., be sure to conduct
the work with emergency operation setting.
Never execute work such as disconnection of the power cable from magnet contactor.
(Otherwise, other normal compressors may malfunction.)
*
Because the units will be operated in the combination with which oil pressure
equalization between compressors cannot be performed.
LED display (
7
:ON
7 7
:OFF
9 9
:Blink)
H1P---H7P
(Factory set)
7 777777 777777
777777 777779 9
77777 77779 97 7
7777777 777777
77 7777777 7777
LED display (
7
:ON
7 7
:OFF
9 9
:Blink)
H1P---H7P
(Factory set)
7 777777 777777
77 7777 7777
777777 777779 9
77777 77779 97 7
7777777 777777
77 7777777 7777