Daikin RXYQ96PYDN Service Manual page 279

Field Setting
12.1.9 Emergency Operation
If any of the compressors goes wrong, disable the relevant compressor or the relevant outdoor unit
from operating, and then conduct emergency operation only with operational compressors or
outdoor units.
There are two ways of conducting the Emergency operation : N with remote controller reset and O
by setting outdoor unit PC board.
Applicable model
REYQ72 to 120PYDN
REYQ72 to 144PTJU
REYQ144 to 240PYDN
REYQ168 to 240PTJU
N Emergency operation with remote controller reset
[Emergency operation method]
•
[Details of operation]
•
•
O Outdoor Unit Setting Procedure to Enable Emergency Operation
264
Operating method
On the multi outdoor unit system, if any of the outdoor unit line causes a malfunction (in this
case, the system will stop and the relevant malfunction code will be displayed on the indoor
remote controller), disable only the relevant outdoor unit from operating for a 8 hours using the
indoor remote controller, and then conduct emergency operation with operational outdoor units.
Reset the remote controller (press the RUN/STOP button on the remote controller for 4
seconds or more) when the outdoor unit stops because of malfunction state.
Automatically disable the defective outdoor unit from operating, and then operate other outdoor
units.
The following section shows malfunction codes on which this emergency operation is possible.
E3, E4, E5
F3
H9
J2, J3, J5, J6, J7, J9, JA, JC
L3, L4, L5, L8, L9, LC
U2, UJ
When a defective compressor forces an outdoor unit to enter a malfunction stop state,
emergency operation mode can partially restore operation of the systems by disabling the
affected compressor or outdoor unit module.
N Emergency operation with
remote controller reset
(Auto backup operation)
–
Backup operation by the
indoor unit
SiUS34-801A_b
O Emergency operation with
outdoor unit PC board setting
(Manual backup operation)
Backup operation by the
compressor
Backup operation by the
outdoor unit
VRVIII R-410A Heat Recovery 60Hz