Daikin VRV II-Q RQYQ8-48PY1B Service Manual page 99

SiBE341027
(2) In the Case of Multi-Outdoor-Unit System
[Automatic backup operation]
With multi-outdoor-unit system, if a certain outdoor unit system errors (i.e., the system stops and indoor unit
remote controller displays the error), 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 backup
operation automatically.
However, in the event any of the following errors occurs, automatic backup operation can be performed.
Errors under which automatic backup operation can be performed:
• E3, E4, E5, E7
• F3
• H7, H9
• J2, J3, J5, J6, J7, J9, JA, JC
• L1, L4, L5, L8, L9, LC
• U2, UJ
Note : In order to forcedly clear the automatic backup operation, reset the power
supply with the outdoor unit in the stopped state.
[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.
Master:
Slave :
• In order to set the master unit to operation prohibition mode, set
No. 38 of Setting mode 2 to "MASTER OPERATION
PROHIBITION".
(Procedure)
(1) Press and hold the MODE button (BS1) for a period of 5 seconds 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.
• In order to set the slave unit to operation prohibition mode, set
No. 39 of Setting mode 2 to "SLAVE OPERATION
PROHIBITION".
(Procedure)
(1) Press and hold the MODE button (BS1) for a period of 5 seconds 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.
∗
• In the case of multi-outdoor-unit system, "Inhibition of operation" is not set with each compressor
individually.
• In the case of multi-outdoor-unit system, when the above "Inhibition of operation" is set, outdoor unit rotation
is not functional.
Test Operation
h h : OFF l: Blink)
LED display (h: ON
H1P----H7P H8P
hhhhhhh hh hhhh h
l
hhhhhhh hhhhhhh
(Factory setting)
Field Setting from Outdoor Unit
h h : OFF l: Blink)
LED display (h: ON
H1P----H7P
hhhhhhh hhhhhh
hhhh hhhhh h
l
hhhhhh hhhhh
(Factory setting)
l
hhhhh hhhh h h
hhhhhhh hhhhhh
hhhhhhh hh hhhh
h h : OFF l: Blink)
LED display (h: ON
H1P----H7P
hhhhhhh hhhhhh
hhhh hhhhh
l
hhhhhh hhhhh
(Factory setting)
l
hhhhh hhhh h h
hhhhhhh hhhhhh
hhhhhhh hh hhhh
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