Technical data

4. Service procedures
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12
3
4
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IV - 50
(9) Automatic Address Setting Method
— For group control and central control with
multiple outdoor units —
Carry out automatic address setting with
the remote controller.
(1) All auto. address operation
1 Press the TEST / CHK and
(
)
buttons at the same time for more
than 4 seconds.
2 Press the SET button after confirm-
ing the CODE No. AA (CODE No.
AA: All Auto. address operation).
After addresses are automatically set
in order for the outdoor units from
No. 1 to No. 30, the system returns
to the normal stopped state.
(2) Individual auto. address operation for
each refrigerant circuit
1 To select each refrigerant circuit
individually and set addresses auto-
matically, press the TEST / CHK and
(
) buttons at the same time for
more than 4 seconds, then press the
,
(SET TEMP) button once to
set CODE No. A1.
(CODE No. A1: Auto. address opera-
tion)
2 Select R.C. No. which you want to
execute the auto. address operation
with UNIT button.
3 Press the SET button. The auto.
address operation will start. CODE
No. changes from flashing to ON
state.
4 If the error is happened during the
operation, the alarm message will
display. Check and remove the
cause. If you want to interrupt the
operation, press the CL button then
the unit stands in waiting mode
(Press the SET button).
5 If the auto. address operation fin-
ishes, the display will disappear.
6 Execute the operation of the other
R.C. line in the same way by follow-
ing the above steps 2 to 3.
7 Complete the auto. address op-
eration by pressing the TEST /
CHK button.
Required time for auto. address operation:
In case of group control :
a few minutes
for each R.C.
In case of central control
: max. about 20
min. for each
R.C.
NOTE
(10) Displaying Indoor / Outdoor Unit
Combination Numbers
Display the indoor / outdoor unit address
after automatic address setting.
(1) When installing multiple units, match
the indoor unit address numbers and
the outdoor R.C. address numbers
and display them at an easy-to-check
location (near the nameplate) with an
oil-based magic marker or other indel-
ible marker so that the individual
indoor and outdoor unit combinations
can be checked.
Example:
Outdoor Unit 1 – Indoor Units 1-1, 1-
2, 1-3, ....
Outdoor Unit 2 – Indoor Units 2-1, 2-
2, 2-3, ....
(2) This is necessary for maintenance.
Always label these.
*Check indoor unit address with the
remote controller. Press the TEST /
CHK button for at least 4 seconds and
check the indoor unit address with the
UNIT button. (Each time you press
the UNIT button, the address changes
1-1, 1-2, ... 2-1, 2-2, ...) The fan for
only the selected indoor unit turns on
at high speed, so check which indoor
unit runs and label the indoor unit
address.
(If there is 1 outdoor unit, the ad-
dresses are 1-1, 1-2, ...)
When you press the TEST / CHK
button again, the system returns to
normal remote control mode.