LG ARUM072BTE5 Installation Manual page 137

Indoor Unit Auto Addressing Procedure, continued.
13. After recording the system addresses assigned to each device, open the outdoor
unit disconnect. Remove the outdoor unit to indoor unit communications cable from
terminals IDU(A) and IDU(B). Protect conductors by placing electrical tape over the
bare ends.
14. Close the disconnect to reapply power to the outdoor unit and energize the com-
pressor crankcase heater. Once again, verify that the outdoor unit to indoor unit(s)
communications cable is not connected to terminals IDU(A) and IDU(B) of the
outdoor unit.
15. Replace the control panel door.
WARNING
Upon successful completion of the auto addressing function, an unintentional compressor
start can occur unless the communications cable to the indoor units is removed from the
outdoor unit terminals IDU(A) and IDU(B).
to start outdoor unit compressors or until directed by the LG trained commissioner. Major
damage to the unit piping and compressors will occur, and there is a risk of explosion,
suffocation, physical injury, and / or death.
Auto Addressing Flowchart.
Turn Power On
Wait Three (3) Minutes While
Outdoor Unit Sequences
Through Self-Diagnostics Check.
Proceed when LED is Blank.
Press and Hold RED SW01C
Button for Five (5) Seconds.
LED Displays = 88
Release RED SW01C Button.
Wait Three (3) to Seven (7) Minutes.
NO
LED Displays
= 88
YES
Auto Addressing Procedure Ends.
Do NOT open the service valves or attempt
Auto Addressing Procedure Starts.
Auto addressing procedure is complete. The number of indoor units
that have successfully completed the auto addressing procedure
will display on the LED for thirty (30) seconds.
The address number of each indoor unit is shown on the wired controller display
or on the indoor unit display (this is not an error message). The address number
will disappear after pressing the ON / OFF button on the wired remote controller.
If 01, 02, ... 15 is displayed, then it means that 15 indoor units are recognized as
connected and have been successfully auto addressed.
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG" is a registered trademark of LG Corp.
PRE-COMMISSIONING
Indoor Unit Auto Addressing
Auto Addressing Button Location on Outdoor
Unit PCB.
Check the communication
cable connections.
SSD
DIP-SW01
SW02C SW04D
SW01D
(◄ Backward (x Cancel
(Reset Button)
Button) Button)
SW03C
(► Forward
SW01C
Button)
(Confirm / Automatic
Address Setting Button)
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