Daikin REYQ8-48PY1B, Service Manual

Page: 242 / 477

Field Setting SiBE37-701_B
231 Test Operation
3.2.9 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 :
with remote controller reset and
by setting outdoor unit PCB.
Emergency operation with remote controller reset
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.
[Emergency operation method]
• Reset the remote controller (i.e., press the RUN/STOP button on the remote controller for 4
seconds or more) when the outdoor unit stops because of malfunction state.
[Details of operation]
• 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.
*1: When malfunction codes E7 and H7 are shown, the
possibility of emergency operation is decided as
follows.
While in heating or cooling-heating concurrent
operation
• One out of three connected outdoor units
malfunctions.
→
Emergency operation is
possible.
• Two out of three connected outdoor units
malfunction.
→
Emergency operation is not
possible.
• One out of two connected outdoor units
malfunctions.
→
Emergency operation is not
possible.
Emergency operation by setting outdoor unit PCB
In malfunction stop state of the outdoor unit due to defective compressor, by setting the
relevant compressor or relevant outdoor unit to "Disabling operation setting", the emergency
operation is conducted with operational compressors or outdoor units.
<REYQ8 to 16PY1>
k
Disabling the compressor 1 (on the right side) from operating:
Set No. 38 of setting mode 2 to "Disable-compressor-1 operation".
Operating method
Applicable model
Emergency operation with
remote controller reset
(Auto backup operation) Emergency operation with
outdoor unit PCB setting
(Manual backup operation)
REYQ8 to 16PY1 –
Backup operation by the
compressor
REYQ18 to 48PY1
Backup operation by the
outdoor unit
Backup operation by the
outdoor unit
LED display (
k
: ON,
h
: OFF,
l
: Blink)
(Step) H1P-----------H7P
(1) Press and hold the PAGE button (BS1)
for 5 sec. or more.
k h h h h h h
(2) Press the OPERATE button (BS2) 38
times.
k k h h k k h
(3) Press the CHECK button (BS3) once.
k h h h h h l
(Factory setting)
(4) Press the OPERATE button (BS2) once.
k h h h h l h
(5) Press the CHECK button (BS3) twice.
k h h h h h h
(6) Press the PAGE button (BS1) once.
h h k h h h h
E3, E4, E5, E7 (*1)
F3
H7 (*1), H9
J2, J3, J5, J6, J7, J9, JA, JC
L1, L4, L5, L8, L9, LC
U2, UJ