Emergency Operation - Daikin R410As Service Manual

Si39-302
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.
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.
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 (RXYQ8 to 16M)
•
∗
• To inhibit INV compressor from operating → Set
setting mode 2 from No. 0 to No. 2.
• To inhibit STD1 and STD2 compressors from
operating → Set setting mode 2 from No. 19 to No.
2. (RXYQ8M to RXYQ16M)
• To inhibit STD2 compressor from operating → Set
setting mode 2 from No. 19 to No.3.(RXYQ14M)
Function
Emergency operation with settings in service mode
"Inhibition of operation" is set with each compressor.
(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.
(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.
(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) twice.
(5) Press the RETURN button (BS3) twice.
(6) Press the MODE button (BS1) once.
Other Control
LED display (7:ON 7:OFF 9:Blink)
H1P---H7P
7777777
(Factory set)
7777779
7777797
7777777
7777777 77
LED display (7:ON 7:OFF 9:Blink)
H1P---H7P
7777777
77 7 777 7777
(Factory set)
7777779
7777797
7777777
7777777 77
LED display (7:ON 7:OFF 9:Blink)
H1P---H7P
7777777
77 7 777 7777
(Factory set)
7777779
7777799
7777777
7777777 77
89